Способ получения C3-хлорированных алкановых или алкеновых соединений

Изобретение относится к способу получения реакционной смеси, содержащей совокупность изомеров С3-хлорированного алкана. Описан способ получения реакционной смеси, содержащей совокупность изомеров C3-хлорированного алкана, включающий хлорирование исходного материала C3-хлорированного алкана в зоне хлорирования молекулярным хлором для получения совокупности изомеров C3-хлорированного алкана, при этом в совокупности изомеров С3-хлорированного алкана каждый имеет по меньшей мере еще один атом хлора в сравнении с исходным материалом C3-хлорированного алкана, где концентрацию исходного материала C3-хлорированного алкана контролируют таким образом, что превращение исходного материала C3-хлорированного алкана в совокупность изомеров C3-хлорированного алкана представлено молярным соотношением исходного материала C3-хлорированного алкана к изомерам C3-хлорированного алкана в реакционной смеси, присутствующей в зоне хлорирования, не превышающим приблизительно 40:60, где исходный материал C3-хлорированного ...

СПОСОБ ПОЛУЧЕНИЯ 2,3,3,3-ТЕТРАФТОРПРОПЕНА

Изобретение относится к вариантам способа получения 2,3,3,3-тетрафторпропена. Один из вариантов включает в себя следующие стадии: (а) каталитическую реакцию 1,1,1,2,3-пентахлорпропана и/или 1,1,2,2,3-пентахлорпропана с HF с образованием продукта 2-хлор-3,3,3-трифторпропена; (b) каталитическую реакцию полученного таким образом 2-хлор-3,3,3-трифторпропена до 2,3,3,3-тетрафторпропена; где стадию (a) проводят в жидкой фазе; и где температура процесса на стадии (b) выше, чем температура процесса на стадии (a), по меньшей мере, на 30°C. Использование настоящего способа позволяет получать желаемый продукт со значительной селективностью. 2 н. и 13 з.п. ф-лы, 15 пр., 1 табл., 4 ил.

АЗЕОТРОПНЫЕ КОМПОЗИЦИИ, СОДЕРЖАЩИЕ 3,3,3-ТРИФТОРПРОПЕН И ФТОРОВОДОРОД, И СПОСОБ ИХ РАЗДЕЛЕНИЯ

Изобретение относится к способам разделения 3,3,3-трифторпропена и фтороводорода с помощью азеотропной дистилляции как с, так и без добавленного соединения азеотропообразователя. Также раскрываются способы отделения 1,1,1,2-тетрафторпропана и/или 1,1,1,3-тетрафторпропана, и 3,3,3-трифторпропена от фтороводорода с помощью азеотропной дистилляции как с, так и без добавленного азеотропообразователя. Один из вариантов способа разделения смеси, содержащей HF и ГФУ-1243zf, где указанный способ включает этапы, на которых: а) подают композицию, содержащую HF и ГФУ-1243zf, в первую дистилляционную колонну; b) удаляют азеотропную композицию, содержащую HF и ГФУ-1243zf в качестве первого дистиллята, и либо i) HF, либо ii) ГФУ-1243zf в качестве композиции кубовых остатков первой колонны; с) конденсируют первый дистиллят для образования 2 жидких фаз, являющихся i) фазой, обогащенной HF, и ii) фазой, обогащенной ГФУ-1243zf; и d) возвращают первую жидкую фазу, обогащенную тем же соединением, которое удаляют ...

СПОСОБЫ ОТДЕЛЕНИЯ 2,3,3,3-ТЕТРАФТОРПРОПЕНА ОТ ФТОРИСТОГО ВОДОРОДА СПОСОБОМ АЗЕОТРОПНОЙ ДИСТИЛЛЯЦИИ

Изобретение относится к ряду вариантов разделения смеси, содержащей HF и ГФУ-1234yf. Один из вариантов включает: а. подачу композиции, содержащей HF и ГФУ-1234yf, в первую дистилляционную колонну; b. удаление азеотропной композиции, содержащей HF и ГФУ-1234yf, в виде первого дистиллята и либо i) HF, либо ii) ГФУ-1234yf в виде композиции первых кубовых остатков; с. конденсацию первого дистиллята с образованием двух жидких фаз, представляющих собой i) фазу, обогащенную HF, и ii) фазу, обогащенную ГФУ-1234yf; и d. рециркуляцию первой жидкой фазы, обогащенной тем же соединением, которое удаляют в виде кубовых остатков первой колонны, при этом указанная жидкая фаза представляет собой либо i) фазу, обогащенную HF, либо ii) фазу, обогащенную ГФУ-1234yf, обратно в первую дистилляционную колонну. Предлагаемое изобретение предоставляет новый способ разделения HF и ГФУ-1234yf. 7 н. и 7 з.п. ф-лы, 9 пр., 9 табл., 8 ил.

СПОСОБЫ ОЧИСТКИ ВЫСОКОМОЛЕКУЛЯРНЫХ АЛМАЗОИДОВ И СОСТАВЫ, СОДЕРЖАЩИЕ ТАКИЕ АЛМАЗОИДЫ

... 1. Способ извлечения состава, обогащенного компонентами, представляющими собой тетрамантан, и компонентами, представляющими собой другие высокомолекулярные алмазоиды, включающий следующие операции: а) выбор исходного реагента, содержащего компоненты, представляющие собой тетрамантан, и компоненты, представляющие собой другие высокомолекулярные алмазоиды, в количестве, поддающемся извлечению; б) удаление из исходного реагента достаточного количества компонентов, имеющих температуру кипения меньше, чем наиболее низкая температура кипения компонента, представляющего собой тетрамантан, в условиях, при которых компоненты, представляющие собой тетрамантан, и компоненты, представляющие собой другие высокомолекулярные алмазоиды, остаются в обработанном исходном реагенте в количестве, поддающемся извлечению; и в) термическую обработку исходного реагента, извлеченного на операции (б), для пиролиза, по меньшей мере, достаточного количества содержащихся в нем компонентов, не являющихся алмазоидами, ...

СПОСОБЫ ПОЛУЧЕНИЯ И ОЧИСТКИ ФТОРГИДРООЛЕФИНОВ

... 1. Способ получения фторгидроолефина, включающий дегидрофторирование фторсодержащего углеводорода, который имеет у соседних атомов углерода, по крайней мере, один атом водорода и, по крайней мере, один атом фтора, с образованием смеси продуктов, содержащей указанный фторгидроолефин, не прореагировавший фторсодержащий углеводород и фторид водорода, где, по крайней мере, один из указанного фторгидроолефина и указанного фторсодержащего углеводорода присутствует в указанной смеси продуктов в виде азеотропной композиции с фторидом водорода. ! 2. Способ по п.1, который включает также стадию дистилляции указанной смеси продуктов с образованием композиции дистиллята, представляющей собой азеотропную композицию, которая содержит указанный фторгидроолефин и фторид водорода. ! 3. Способ по п.2, который включает также стадию получения композиции кубовых остатков, представляющих собой указанный фторсодержащий углеводород, который практически не содержит фторид водорода. ! 4. Способ отделения фторгидроолефина ...

АЗЕОТРОПНЫЕ КОМПОЗИЦИИ, СОДЕРЖАЩИЕ 2,3,3,3-ТЕТРАФТОРПРОПЕН И ФТОРИСТЫЙ ВОДОРОД, И ИХ ИСПОЛЬЗОВАНИЕ

... 1. Азеотропная или близкая к азеотропной композиция, содержащая примерно от 64,6 мол.% примерно до 92,4 мол.% HFC-1234yf и фтористого водорода. ! 2. Азеотропная или близкая к азеотропной композиция по п.1, содержащая примерно от 64,6 мол.% примерно до 92,4 мол.% HFC-1234yf и примерно от 35,4 мол.% примерно до 7,6 мол.% фтористого водорода. ! 3. Азеотропная или близкая к азеотропной композиция по п.1, содержащая примерно от 64,6 мол.% примерно до 92,4 мол.% HFC-1234yf и примерно от 35,4 мол.% примерно до 7,6 мол.% фтористого водорода, где давление паров составляет примерно от 23,2 фунт/кв.дюйм (160 кПа) примерно до 453 фунт/кв.дюйм (3123 кПа) при температуре примерно от -20°C примерно до 80°C. ! 4. Азеотропная или близкая к азеотропной композиция по п.1, где указанная композиция состоит по существу из примерно от 64,6 мол.% примерно до 92,4 мол.% HFC-1234yf и примерно от 35,4 мол.% примерно до 7,6 мол.% фтористого водорода, где давление паров составляет примерно от 23,2 фунт/кв.дюйм (160 ...

АЗЕОТРОПНЫЕ КОМПОЗИЦИИ, СОДЕРЖАЩИЕ Е-1,3,3,3-ТЕТРАФТОРПРОПЕН И ФТОРОВОДОРОД, И ИХ ПРИМЕНЕНИЕ

... 1. Азеотропная или близкая к азеотропной композиция, содержащая Е-HFC-1234ze и фтороводород. ! 2. Азеотропная или близкая к азеотропной композиция по п. 1, содержащая Е-HFC-1234ze и эффективное количество фтороводорода. ! 3. Азеотропная или близкая к азеотропной композиция по п. 1, содержащая от примерно 62,4 молярных процента до примерно 89,4 молярных процента Е-HFC-1234ze и фтороводород. ! 4. Азеотропная или близкая к азеотропной композиция по п. 1, содержащая от примерно 62,4 молярных процента до примерно 89,4 молярных процента Е-HFC-1234ze и от примерно 37,6 молярных процента до примерно 10,6 молярных процента фтороводорода. ! 5. Азеотропная или близкая к азеотропной композиция по п. 1, содержащая от примерно 62,4 молярных процента до примерно 89,4 молярных процента Е-HFC-1234ze и от примерно 37,6 молярных процента до примерно 10,6 молярных процента фтороводорода, в которой давление пара равно от примерно 2,8 фунт/кв. дюйм (19 кПа) до примерно 518 фунт/кв. дюйм (3571 кПа) при температуре ...

ПРОЦЕСС ПОЛУЧЕНИЯ 2-ХЛОР-3, 3, 3-ТРИФТОРПРОПЕНА (HCFO 1233XF) ФТОРИРОВАНИЕМ ПЕНТАХЛОРПРОПАНА В ЖИДКОЙ ФАЗЕ

... 1. Способ каталитического фторирования в жидкой фазе продукта 1,1,1,2,3-пентахлорпропана и/или 1,1,2,2,3-пентахлорпропана в продукт 2-хлор-3,3,3-трифторпропен в присутствии катализатора.2. Способ по п.1, который осуществляют в органической среде.3. Способ по любому из пп.1 и 2, который осуществляют в присутствии растворителя.4. Способ по п.3, в котором растворитель присутствует в количестве, необходимом для обеспечения степени разбавления, по меньшей мере, 20%, предпочтительно от 20% до 80%, преимущественно от 40% до 60%.5. Способ по п.3, в котором растворитель выбирают из 1,2-дихлорэтана, 1,2,3-трихлорпропана, 1-хлор-1-фторэтана, 1,1-дифторэтана, 1,1-дихлорэтана и 1,3-дихлор-1-фторбутана, изомеров тетрахлорфторпропана, изомеров трихлордифторпропана и изомеров дихлортрифторпропана, 1,1,1,3,3-пентафторбутана и 1,1,2-трихлор-2,2-дифторэтана, нитрованных растворителей, включая нитрометан и нитробензол, сульфонов, включая тетраметиленсульфон и диметилсульфон, 1,1,2-трихлор-2-фторэтан или перхлорэтилен ...

СПОСОБЫ ОТДЕЛЕНИЯ 2,3,3,3-ТЕТРАФТОРПРОПЕНА ОТ ФТОРИСТОГО ВОДОРОДА СПОСОБОМ АЗЕОТРОПНОЙ ДИСТИЛЛЯЦИИ

... 1. Способ разделения смеси, содержащей HF и ГФУ-1234yf, включающий: ! a. подачу композиции, содержащей HF и ГФУ-1234yf, в первую дистилляционную колонну; ! b. удаление азеотропной композиции, содержащей HF и ГФУ-1234yf, в виде первого дистиллята и либо i) HF, либо ii) ГФУ-1234yf в виде композиции первых кубовых остатков; ! c. конденсацию первого дистиллята с образованием двух жидких фаз, представляющих собой i) фазу, обогащенную HF, и ii) фазу, обогащенную ГФУ-1234yf; и ! d. рециркуляцию первой жидкой фазы, обогащенной тем же соединением, которое удаляют в виде кубовых остатков первой колонны, при этом указанная жидкая фаза представляет собой либо i) фазу, обогащенную HF, либо ii) фазу, обогащенную ГФУ-1234yf, обратно в первую дистилляционную колонну. ! 2. Способ по п.1, дополнительно включающий подачу во вторую колонну дистилляции второй жидкой фазы без рециркуляции на ступени (d), причем указанная вторая жидкая фаза представляет собой либо i) фазу, обогащенную HF, либо ii) фазу, обогащенную ...

СПОСОБ ПОЛУЧЕНИЯ 2-ХЛОР-1,1,1,2-ТЕТРАФТОРПРОПАНА ФТОРИРОВАНИЕМ 2-ХЛОР-3,3,3-ТРИФТОРПРОПЕНА В ЖИДКОЙ ФАЗЕ

... 1. Способ каталитического фторирования в жидкой фазе 2-хлор-3,3,3-трифторпропена в 2-хлор-1,1,1,2-тетрафторпропан, с ионной жидкостью в качестве катализатора.2. Способ по п.1, в котором катализатор получают взаимодействием по меньшей мере одной галогенированной или оксигалогенированной кислоты Льюиса на основе алюминия, титана, ниобия, тантала, олова, сурьмы, никеля, цинка или железа с солью общей формулы Y+A-, где А- означает галогенид-анион или гексафторантимонат анион, а Y+ означает катион четвертичного аммония, катион четвертичного фосфония или катион третичного сульфония.3. Способ по любому из пп.1-2, в котором катализатор представляет собой катализатор на основе фторированного комплекса emimSbF .4. Способ по любому из пп.1-2, который проводят в обогащенной катализатором фазе, предпочтительно при молярном отношении катализатор/органические вещества выше, чем 50 мол.%.5. Способ по одному из пп.1-2, в котором в процессе реакции добавляют хлор, предпочтительно в молярном соотношении от ...

СПОСОБ И АППАРАТ ДЛЯ УТИЛИЗАЦИИ ТЕПЛА В УСТАНОВКАХ ДЛЯ ПОЛУЧЕНИЯ МОНОМЕРА ВИНИЛХЛОРИДА ИЛИ В ИНТЕГРИРОВАННЫХ УСТАНОВКАХ ДЛЯ ПОЛУЧЕНИЯ МОНОМЕРА ВИНИЛХЛОРИДА/ПОЛИВИНИЛХЛОРИДА

... 1. Способ получения винилхлорида термическим расщеплением 1,2-дихлорэтана в комплексе для получения винилхлорида посредством дистилляционной очистки 1,2-дихлорэтана с применением по меньшей мере одной колонны высококипящих соединений, в которой удаляют вещества с более высокой температурой кипения, чем у 1,2-дихлорэтана, а также посредством необязательно присоединенной установки для получения поливинилхлорида, при этом указанный способ включает операцииa) эксплуатации колонны высококипящих соединений при температурах наверху колонны 120-150°С иb) применения по меньшей мере части верхнего потока из колонны высококипящих соединений с получением тепловой энергии, применяемой в теплоотводах компонента установки, предназначенного для получения 1,2-дихлорэтана, и/или в теплоотводах компонента установки ниже по потоку, предназначенного для получения винилхлорида, и/или в теплоотводах компонента установки ниже по потоку, предназначенного для получения поливинилхлорида, сc) применением верхнего ...

Способ получения 1,2-дихлорэтана и его вариант

Изобретение касается галоидугле- водородов, в частности 1,2-дихлорэта- на (ДЭ) , который широко используют в промышленности основного органического синтеза,Для сокращения расхода катализатора хлорирования этилена С1 используют определенную добавку,а после отделения растворителя катализатор (КГ) возвращают в процесс. Хлорирование этилена С ведут при 30-70 С и давлении 1-1,5 ат в среде ДЭ, взятого как растворитель, в присутствии КГ безводного FeCl и МН при массовом соотношении 1:1 и концентрации FeClg в ДЭ 0,002-0,3 мас.%: с использованием кислорода или воздуха как ингибитора образования побочных продуктов. Затем из реакхуюнной массы отгоняют ДЭ (до 90-98%), отфильтровывают КТ и возвращают в начало процесса. Вариантом способа является пропускание по-, лученной реакционной массы через адсорбент - активированный уголь или силикагель, из фильтрата отгоняют ДЭ, а из сорбента обработкой ДЭ или НС1 вымьюают КТ и направляют его в начало процесса. Использование приема возврата КТ сокращает его расход ...

Способ получения 1,1,2,3-тетрахлорпропена

DESTILLATIONSVERFAHREN UND VORRICHTUNG.

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Verfahren zum Herstellen von 1-Chlor-3,3,3-Trifluor-1-Propen und 1,3,3,3-Tetrafluorpropen

Bereitgestellt wird ein Verfahren, wobei auch ohne Verwendung eines Feststoffkatalysators ein gewünschtes Isomer von 1-Chlor-3,3,3-trifluor-1-propen und 1,3,3,3-Tetrafluorpropen bei hoher Umsetzungsrate erlangt werden kann. Da kein Feststoffkatalysator verwendet wird, kann auf stabile Weise das gewünschte Isomer von 1-Chlor-3,3,3-trifluor-1-propen und 1,3,3,3-Tetrafluorpropen erlangt werden, ohne dass die Sorge einer Degradation des Feststoffkatalysators wie etwa eines Verkokens des Feststoffkatalysators im Laufe der Zeit besteht.

Verbessertes Verfahren zur Herstellung von Chloroalkylen und Alkynylaminen

VERFAHREN ZUR GEWINNUNG VON REINEN 2-(PERFLUORALKYL)-AETHANOLEN AUS IHREN GEMISCHEN MIT 2-(PERFLUORALKYL)-AETHYLENEN UND GEGEBENENFALLS 2-(PERFLUORALKYL)- AETHYLESTERN

Fluessiges Dielektrikum

VERFAHREN ZUR HERSTELLUNG UND AUFREINIGUNG VON N-PROPYLBROMID

Substituted benzene derivative having at least one benzene ring substituted by 3,3,3-trifluoropropyl

A novel trifluoropropyl derivative of mono-substituted benzene represented by the general formula: wherein R is halogen atom, trifluoromethyl, n-octyl, n-dodecyl, or phenoxy group not substituted or mono-substituted by 3,3,3-trifluoropropyl group, and n is an integer of 1, 2 or 3, with the proviso that the total number of 3,3,3-trifluoropropyl group of the derivative of mono-substituted benzene is at most 3, and a process for producing the derivative of mono-substituted benzene.

Composition

An azeotropic or near-azeotropic composition comprising HF and CH2ClCHClCHF3 (243db). The composition preferably consists essentially of HF and 243db, or more preferably consists of HF and 243db. The use of the azeotropic or near-azeotropic composition in the manufacture of one or more hydrofluoroolefins, particularly CHFCHF3 (1234zeE) or CH2CHFCF3, is also claimed. A process for the separation of the claimed azeotrpic or near-azeotropic composition is provided. The separation process preferably performed using pressure swing distillation, particularly wherein the pressure swing apparatus comprises two columns operated sequentially at different pressures and/or at different temperatures. The first column is preferably operated at a pressure 0.5 to 15 bara and at a temperature of 1°C to 115°C. The second column is preferably operated a pressure between 1 to 20 bara and at a temperature of 18°C to 203°C. The separation process is preferably continuous.

Process

PURIFICATION OF VINYL CHLORIDE

... 1457093 Vinyl chloride recovery LUMMUS CO 20 Jan 1975 [21 Jan 1974] 2411/75 Heading C2C Monomer grade vinyl chloride (at least 99À95 mol. per cent) is recovered by (a) introducing a mixture comprising vinyl chloride and, as impurities, methyl chloride and at least one C 4 aliphatic hydrocarbon into a first fractional distillation zone to recover vinyl chloride and lighter components as overhead; (b) introducing the overhead into a second frational distillation zone to recover vinyl chloride of monomer grade as bottoms. The mixture introduced into (a) preferably contains 95-99 mol per cent vinyl chloride and the first distillation zone is run at an overhead temperature of 35-293‹ F., a bottoms temperature of 65‹ to 300‹ F. and a column pressure of 1À7-44 atmospheres. The second distillation zone is preferably run at an overhead temperature of 12-248‹ F., a bottoms temperature of 52-300‹ F. and a column pressure of 1À7-45À5 atmospheres. The overhead from (a) preferably has less than 500 ppm ...

CONTINUOUS PROCEDURE FOR THE PRODUCTION OF HALOGENIERTEN CONNECTIONS

PROCEDURE FOR THE PRODUCTION AND AUFREINIGUNG OF NPROPYLBROMID

PROCEDURE FOR THE PRODUCTION OF CLEANED ONE HEPTAFLUORPROPAN

PROCEDURE FOR the ENTERPRISE of a DISTILLATION COLUMN FOR the CLEANING OF 1, 2-DICHLORETHAN AND FOR COUPLED CAUSTIC SODA SOLUTION EVAPORATION

PROCEDURE FOR THE PRODUCTION OF HALOGENIERTEN ETHANEN

LITTLE COLORED TRANS-1,3-DICHLORPROPEN AND PROCEDURE FOR ITS PRODUCTION

PROCEDURE FOR THE DISTANCE OF ACETONE FROM AN ACETONE, METHYL ACETATE AND METHYL IODIDE A CONTAINING MIXTURE

PROCEDURE FOR the PRODUCTION OF 1,1,2,3TETRACHLOROPROPEN.

PROCEDURE FOR THE PRODUCTION OF HALOGENIERTEN HYDROCARBONS

AZEOTROPES MIXTURE CONSISTING OF HF AND 1.1.1 - TRIFLUORO-3-CHLORO-2-PROPEN

Procedure for the production of vinyl chloride from polluted 1,2-Dichloräthan

Process for the manufacture of 1,1,1,2-tetrafluoroethane

SEPARATING 1,1,1,2 TETRAFLUOETHANE FROM MIXTURES WITH HF AND/OR 1 CHLORO 2,2 DIFLUOROETHYLENE

Processes and systems for demethanization of brominated hydrocarbons

Process and systems for converting lower molecular weight alkanes to higher molecular weight hydrocarbons that include demethanization of brominated hydrocarbons, wherein the brominated hydrocarbons are formed by reaction of the lower molecular weight alkanes with bromine.

SEPARATING 1,1,1,2 TETRAFLUOETHANE FROM MIXTURES WITH HF AND/OR 1 CHLORO 2,2 DIFLUOROETHYLENE

Process for preparing pentafluoroethane

HFO-1234ze, HFO-1225zc and HFO-1234yf compositions and processes for producing and using the compositions

... (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property (1) Organization11111111111111111111111I1111111111111ii111liiili International Bureau (10) International Publication Number (43) International Publication Date W O 2021/080645 Al 29 April 2021 (29.04.2021) W IPO I PCT (51) International Patent Classification: C07C 17/25 (2006.01) C09K 5/04 (2006.0 1) C07C17/358(2006.01) C07C17/383(2006.01) C07C 21/18 (2006.0 1) (21) International Application Number: PCT/US2020/029690 (22) International Filing Date: 24 April 2020 (24.04.2020) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: PCT/US2019/057999 25 October 2019 (25.10.2019) US (71) Applicant: THE CHEMOURS COMPANY FC, LLC [US/US]; 1007 Market Street, Wilmington, Delaware 19801 (US). (72) Inventors: PENG, Sheng; 549 Cabot Drive, Hockessin, Delaware 19707 (US). NAPPA, Mario Joseph; 27548 Stoney Brook Drive, Leesburg, Florida 34748 (US). (74) Agent ...

Method for the preparation of 3-bromo-1,1,1-trifluoropropane

HALOCARBON PRODUCTION PROCESSES, HALOCARBON SEPARATION PROCESSES, AND HALOCARBON PRODUCTION SYSTEMS

POLYMERIZABLE HIGHER DIAMONDOID DERIVATIVES

Higher diamondoid derivatives capable of taking part in polymerization reactions are disclosed as are intermediates to these derivatives, polymers formed from these derivatives and methods for preparing the polymers.

PROCESSES FOR PRODUCING TRIFLUOROIODOMETHANE AND TRIFLUOROACETYL IODIDE

The present disclosure provides a process for producing trifluoroiodomethane, the process comprising providing a reactant stream comprising hydrogen iodide and at least one trifluoroacetyl halide selected from the group consisting of trifluoroacetyl chloride, trifluoroacetyl fluoride, trifluoroacetyl bromide, and combinations thereof, reacting the reactant stream in the presence of a first catalyst at a first reaction temperature from about 25 °C to about 400 °C to produce an intermediate product stream comprising trifluoroacetyl iodide, and reacting the intermediate product stream in the presence of a second catalyst at a second reaction temperature from about 200 °C to about 600 °C to produce a final product stream comprising the trifluoroiodomethane.

HFO-1234ZE, HFO-1225ZC AND HFO-1234YF COMPOSITIONS AND PROCESSES FOR PRODUCING AND USING THE COMPOSITIONS

PROCESS FOR THE PRODUCTION OF HFO TRANS-1234ZE FROM HFC-245FA

This invention relates a process for the manufacture of the HFO trans-1,3,3,3--tetrafluoropropene (HFO trans-1234ze). More particularly, the invention pertains to a process for the manufacture of the HFO trans-1234ze by first dehydrofluorinating 1,1,1,3,3-pentafluoropropane to thereby produce a mixture of cis-1,3,3,3-tetrafluoropropene, trans-1,3,3,3-tetrafluoropropene and hydrogen fluoride. Then optionally recovering hydrogen fluoride and then recovering trans-1,3,3,3-tetrafluoropropene.

METHOD FOR MAKING 1,1,3,3-TETRACHLOROPROPENE

A process for the manufacture of 1,1,3,3-tetrachloropropene, the process comprising dehydrochlorinating 1,1,1,3,3-pentachloropropane.

PROCESSES FOR SEPARATION OF 1,3,3,3-TETRAFLUOROPROPENE FROM HYDROGEN FLUORIDE BY AZEOTROPIC DISTILLATION

Disclosed herein is a process for the separation of HFC-1234ze and HF by azeotropic distillation. Additionally disclosed is a process for the separation of HFC1234ze, HFC-245eb and/or 245fa, and HF by azeotropic distillation.

INTEGRATED PROCESS FOR THE PRODUCTION OF 1-CHLORO-3,3,3-TRIFLUOROPROPENE

The present invention is directed to processes for the production of 1233zd from 240fa and HF, with or without a catalyst, at a commercial scale. The 240fa and HF are fed to a reactor operating at high pressure. The resulting product stream comprising 1233zd, HCl, HF, and other byproducts is treated to one or more purification techniques including phase separation and one or more distillations to provide purified 1233zd, which meets commercial product specifications, i.e., having a GC purity of 99.5% or greater.

PROCESS FOR PURIFYING 1,1-DICHLORO-1-FLUOROETHANE

Procédé pour l'épuration de 1,1-dichloro-1-fluoroéthane Procédé pour l'épuration de 1,1-dichloro-1-fluoroéthane brut par traitement avec du chlore en présence d'un initiateur organique de radicaux libres puis distillation. Pas de figure.

Procédé de séparation de HF, HCl et CCl2F2 à partir de mélanges réactionnels comprenant ces composés.

Procédé de distillation de courants d'hydrocarbures chlorés

Procédé d'obtention de perchloréthylène pur, à partir d'un mélange contenant du perchloréthylène, du trichloréthylène, et du tétrachloréthane symétrique

Verfahren zur Herstellung von Vinylchlorid aus verunreinigtem 1,2-Dichloräthan

METHOD FOR PRODUCTION OF VINYL CHLORIDE MONOMER (VKhM) AND POLYVINYL CHLORIDE (PVC)

METHOD OF PRODUCING AT LEAST ONE COMPOUND DERIVATIVE OF ETHYLENE

METHOD OF PRODUCING AT LEAST ONE DERIVATIVE OF ETHYLENE

СПОСОБ ПОЛУЧЕНИЯ 1,1,1,2-ТЕТРАФТОРЭТАНА

АЗЕОТРОПНАЯ ИЛИ БЛИЗКАЯ К АЗЕОТРОПНОЙ КОМПОЗИЦИЯ, СОДЕРЖАЩАЯ 2,3,3,3-ТЕТРАФТОРПРОПЕН И ФТОРИД ВОДОРОДА, И СПОСОБЫ ОТДЕЛЕНИЯ, ПОЛУЧЕНИЯ И ОЧИЩЕНИЯ 2,3,3,3-НЕТРАФТОРПРОПЕНА

В данной заявке раскрыта азеотропная и близкая к азеотропной композиции, содержащие 2,3,3,3-тетрафторпропен (HFC-1234yf) и фторид водорода (HF). Эти композиции используют в способах получения и очищения HFC-1234yf.

Process for the manufacture or 1,1,1,2-tetrafluoroethan

СПОСОБ РАБОТЫ ДИСТИЛЛЯЦИОННОЙ КОЛОННЫ ДЛЯ ИЗВЛЕЧЕНИЯ ВОДЫ И КОМПОНЕНТОВ, КИПЯЩИХ ПРИ БОЛЕЕ НИЗКОЙ ТЕМПЕРАТУРЕ, ЧЕМ 1,2-ДИХЛОРЭТАН, ИЗ 1,2-ДИХЛОРЭТАНА

Способ работы дистилляционной колонны для извлечения воды и компонентов, кипящих при более низкой температуре, чем 1,2-дихлорэтан, из 1,2-дихлорэтана, в котором, по крайней мере, часть теплоты конденсации вторичных паров дистилляционной колонны, которые содержат воду, используют для выпаривания раствора едкого натра. Кроме того, по крайней мере, часть образованного из хлора и этилена в прямом хлорировании 1,2-дихлорэтана используют для нагревания дистилляционной колонны, а потом применяют также как носитель тепла для выпаривания раствора едкого натра.

АЗЕОТРОПНАЯ КОМПОЗИЦИЯ, СПОСОБ ПОЛУЧЕНИЯ Е-1,3,3,3-ТЕТРАФТОРПРОПЕНА, СПОСОБ ЕГО ОТДЕЛЕНИЯ И ОЧИЩЕНИЯ

В данной заявке раскрыты азеотропные и почти азеотропные композиции, которые содержат Е-1,3,3,3-тетрафторпропен и фторид водорода. Эти азеотропные и почти азеотропные композиции используют в способах получения Е-1,3,3,3-тетрафторпропена и в способах очищения Е-1,3,3,3-тетрафторпропена от смесей Е-1,3,3,3-тетрафторпропена с 1,1,1,3,3-пентафторпропаном и/или с фторидом водорода.

АЗЕОТРОПНАЯ ИЛИ БЛИЗКАЯ К АЗЕОТРОПНОЙ КОМПОЗИЦИИ, КОТОРЫЕ СОДЕРЖАТ 1,1,1,2,3-ПЕНТАФТОРОПРОПЕН И ФТОРОВОДОРОД, СПОСОБЫ ОТДЕЛЕНИЯ И ПОЛУЧЕНИЯ 1,1,1,2,3-ПЕНТАФТОРОПРОПЕНА

Раскрыты азеотропные композиции, которые содержат 1,2,3,3,3-пентафторопропен и фтороводород. Данные азеотропные композиции полезны в процессах производства и процессах выделения 1,2,3,3,3-пентафторопропена.

Method and device for purifying 2,3,3,3-tetrafluoropropene and process for producing same

Provided are a method and a device for efficiently obtaining 2,3,3,3-tetrafluorpropene reduced in both organic-impurity content and water content. The method for purifying 2,3,3,3-tetrafluoropropene is a method for continuously purifying crude 2,3,3,3-tetrafluoropropene which contains water and organic impurities, the method comprising: using a device equipped with a distillation column having X stages (3<=X. The nearest stage from the column top is referred to as first stage.) and with a means for taking a distillate out of the top of the distillation column and for cooling and condensing the distillate; feeding the crude 2,3,3,3-tetrafluoropropene to the m-th stage of the distillation column (m is n+1<=m<=X, where n is 2<=n<=X-1.); returning at least some of the distillate cooled and condensed in the cooling/condensation means to the h-th stage of the distillation column (h is 1<=h<=n-1.); and withdrawing a liquid phase part present in the n-th stage of the distillation column to thereby ...

Process for manufacture of 1,1,1,2-tetrafluoroethane

For the purification of (hydrogen) fluoro-olefin process

氟化氢和1,1,1-三氟-3-氯-2-丙烯的共沸物

... 本发明提供了一种含有HF和1233zd的共沸物，从富含HF或富含1233zd的HF与1233zd的混合物中分离出该共沸物的方法，以及利用该共沸物和分离方法来改进制备1 233zd的方法。1233zd是用以制备245fa的中间体，而245fa是已知的发泡剂和制冷剂。 ...

Pentafluoropropane, a jacket of a propylene and hydrogen fluoride an azeotrope-like composition

Process of separation of isomers of hexachlorocyclohexane

Improvements with the turbomotors with combustion

A method for obtaining pure trichloroethylene

DERIVED SUBSTITUTE BENZENE HAVING AT LEAST a BENZENE CYCLE SUBSTITUTES BY the 3,3,3-TRIFLUOROPROPYLE GROUP, AND THEIR PREPARATION

MANUFACTORING PROCESS OF THE HYDROFLUOROCARBURES

La présente invention concerne un procédé de fabrication des hydrofluorocarbures. Ce procédé comprend une étape de réaction d'au moins un hydro(fluoro)chlorocarbure ou chlorocarbure avec de l'acide fluorhydrique en phase gazeuse en présence d'un catalyseur et une étape de séparation du mélange de produits issus de la réaction de fluoration caractérisé en ce que le flux gazeux issu de la réaction est comprimé à l'aide d'un compresseur avant d'être soumis à l'étape de séparation. La présente invention a également pour objet un dispositif permettant la mise en oeuvre dudit procédé.

Process of separation of isomers of hexachlorocyclohexane

AZEOTROPIC COMPOSITIONS BASED HYDROGEN FLUORIDE AND Z-3,3.3 CHLOROPROPENE -TRIFLUORO-1-

A method for separating tétrafluoréthylène and hexafluoropropene from a gas, such as that formed by the thermal decomposition of the chlorodifluorométhane

PROCESS OF PRODUCTION OF 2,3,3,3-TETRAFLUOROPROPENE

L'invention concerne un procédé de production de 2,3,3,3-tétrafluoropropène comprenant : - une réaction de fluoration d'un halopropane et / ou halopropène en 2,3,3,3-tétrafluoropropène au moyen de fluorure d'hydrogène ; - la récupération d'un flux gazeux issu de la réaction ; - le refroidissement et la condensation partielle du flux gazeux issu de la réaction, en un flux partiellement condensé ; - la séparation du flux partiellement condensé en une fraction gazeuse et une fraction liquide ; - la compression de la fraction gazeuse en une fraction gazeuse comprimée ; - la compression de la fraction liquide en une fraction liquide comprimée ; - la distillation de la fraction gazeuse comprimée et de la fraction liquide comprimée pour fournir un flux de 2,3,3,3-tétrafluoropropène, un flux d'acide chlorhydrique, et un flux de fluorure d'hydrogène non réagi. L'invention concerne également une installation apte à la mise en œuvre de ce procédé.

PROCESS FOR PRODUCING 2, 3, 3, 3 A-TETRAFLUOROPROPENE.

La présente invention concerne un procédé de production du 2,3,3,3-tetrafluoropropène comprenant les étapes de : a) mise en contact, en phase gazeuse, d'un composé de formule (I) CH(n+2)(X)m-CHp(X)(n+1)-CX(3+p-m) où X représente indépendamment F ou Cl ; n, m, p sont indépendamment les uns des autres 0 ou 1 avec (n+m) = 0 ou 1, (n+p) = 0 ou 1 et (m-p) = 0 ou 1, au moins un X étant Cl, avec de l'acide fluorhydrique pour obtenir un flux de produits comprenant 2,3,3,3-tetrafluoropropène, HCI et HF, b) refroidissement du flux de produits issus du réacteur de l'étape a) à une température de 0°C à 70°C, de préférence à une température de 20°C à 50°C, c) distillation du flux refroidi à l'étape b) pour former un premier courant comprenant 2,3,3,3-tetrafluoropropène et HCI, et un second courant comprenant HF, d) compression du premier courant obtenu à l'étape c) pour former un premier courant comprimé, e) distillation dudit premier courant comprimé obtenu à l'étape d) pour un troisième courant comprenant ...

RECOVERY OF HIGH PURITY VINYL CHLORIDE BY DISTILLATION

PROCESS FOR THE PREPARATION OF 2, 3, 3, 3 A-SULFONATED-A 1 A-PROPEN AND RECYCLING OF 2-CHLORO 3, 3, 3 A-ENHANCED CONDUCTIVITY FREE OF IMPURITIES.

L'invention concerne un procédé de purification du 2-chloro-3,3,3-trifluoropropène (1233xf) à partir d'une première composition comprenant du 2-chloro-3,3,3-trifluoropropène et au moins un des composés choisi parmi le groupe consistant en E-1-chloro-3,3,3-trifluoro-1-propene (1233zdE), 1,1,1,3,3-pentafluoropropane (245fa) et 1,1,1,3,3,3-hexafluoropropane (236fa), ledit procédé comprenant les étapes de mise en contact de ladite première composition avec au moins un agent d'extraction organique pour former une seconde composition ; distillation extractive de ladite seconde composition pour former une troisième composition comprenant au moins un des composés choisi parmi le groupe consistant en E-1-chloro-3,3,3-trifluoro-1-propene (1233zdE), 1,1,1,3,3-pentafluoropropane (245fa) et 1,1,1,3,3,3-hexafluoropropane (236fa), et ledit agent d'extraction organique ; et un courant comprenant le 2-chloro-3,3,3-trifluoropropène .

METHOD OF PRODUCTION AND PURIFICATION OF THE 2, 3, 3, 3 A-TETRAFLUOROPROPENE.

L'invention se réfère à un procédé de production du 2,3,3,3-tétrafluoropropène mis en œuvre à partir d'une composition de départ comprenant les étapes de mise en contact, en présence d'un catalyseur, de la composition de départ avec HF pour produire une composition A comprenant 2,3,3,3-tétrafluoropropène (1234yf), des produits intermédiaires B consistant en 2-chloro-3,3,3-trifluoropropène (1233xf), 1,1,1,2,2-pentafluoropropane (245cb), et des produits secondaires C consistant en E-1-chloro-3,3,3-trifluoro-1-propene (1233zdE), trans-1,3,3,3-tetrafluoro-1-propene (1234zeE) et 1,1,1,3,3-pentafluoropropane (245fa); récupération de ladite composition A et purification de celle-ci pour former et récupérer un premier courant comprenant 2,3,3,3-tétrafluoropropène (1234yf) et un ou plusieurs flux comprenant 2-chloro-3,3,3-trifluoropropène (1233xf) et/ou 1,1,1,2,2-pentafluoropropane (245cb) ; recyclage à l'étape a) desdits un ou plusieurs flux comprenant 2-chloro-3,3,3-trifluoropropène (1233xf) et ...

2-플루오로부탄의 정제 방법

... 본 발명은 부텐류를 5 ∼ 50 중량％ 함유하는 미정제 2-플루오로부탄을, 비프로톤성 극성 용매 중, 물 또는 탄소수 4 이하의 알코올 존재하, 브로모늄 이온을 형성할 수 있는 브롬화제와 부텐류를 접촉시켜, 부텐류를 2-플루오로부탄보다 고비점 화합물로 변환 후, 반응액으로부터 2-플루오로부탄을 회수하고, 추가로 회수된 2-플루오로부탄을 증류 정제하는 공정으로 이루어지는 프로세스를 거침으로써, 고도로 정제된 2-플루오로부탄을 얻는 2-플루오로부탄의 정제 방법이다.

Process for purifying (hydro)fluoroalkenes

MANUFACTURING METHOD OF 2,3,3,3-TETRAFLUOROPROPENE

Disclosed is a manufacturing method of high purity 1234yf from 245eb. Favorably, the manufacturing method of high purity 1234yf comprises the steps of: removing impurities existing in a tempered 245eb material; conducting dehydrofluorination of 245eb; and removing impurities existing in a final tempered product. The disclosed manufacturing method manufactures a 1224ye product favorably having approximately 500 ppm, and less than 50 ppm of 1225ye and/or trifluoropropene. COPYRIGHT KIPO 2016 ...

1,1,3,3-테트라플루오로프로펜의 이성질체화

... 본 발명은 1234zc를 이성질체화하는 방법을 포함한다. 또한, 245fa로 부터 트랜스-1,3,3,3-테트라플루오로프로펜의 합성공정에서 부산물로 생성된 1,1,3,3-테트라플루오로프로펜의 관리방법이 또한 제공되며, 여기서 1234zc는 이성질체화 반응기에서 HF의 부재하에 촉매의 도움으로 트랜스/시스-1234ze로 전환되거나 혹은 별도의 반응기 혹은 바람직하게는 245fa 디하이드로플루오르화의 동일한 반응기에서 HF의 존재하에 촉매의 도움으로 1234zc 및/또는 245fa로 전환된다.

2,3,3,3-테트라플루오로프로펜의 제조 방법

... 본 발명은 초고순도의 1,1,1,2,3-펜타클로로프로판 (HCC-240db) 을 생성물인 2,3,3,3-테트라플루오로프로펜 (HFO-1234yf) 으로 플루오르화시킴으로써 2,3,3,3-테트라플루오로프로펜을 제조하는 방법으로서, - 하기의 단계를 포함하는, 1,1,1,2,3-펜타클로로프로판을 제조하기 위한 1,1,3-트리클로로프로펜의 염소화의 단계 3: 3-a) 1,1,3-트리클로로프로펜 공급 원료와 염소를 반응 구역에서 접촉시켜, 1,1,1,2,3-펜타클로로프로판 및 1,1,3-트리클로로프로펜을 함유하는 반응 혼합물을 제조하는 단계 (상기 반응 구역은 탈염화수소화 구역과 상이함), 및 3-b) 단계 3-a) 에서 수득되는 반응 혼합물을 처리하여, 1,1,1,2,3-펜타클로로프로판 (HCC-240db) 공급 원료를 수득하는 단계; - 하기의 단계를 포함하는, 2,3,3,3-테트라플루오로프로펜 (HFO-1234yf) 을 제조하는 단계 4: 4-a) 1,1,1,2,3-펜타클로로프로판 (HCC-240db) 공급 원료와 HF 를 촉매의 존재 또는 부재하에서 반응시켜, HCl, HF, 1,1,1,2,2-펜타플루오로프로판 (HFC-245cb), 2-클로로-3,3,3-트리플루오로프로펜 (HCFO-1233xf) 및 2,3,3,3-테트라플루오로프로펜 (HFO-1234yf) 에서 선택되는 하나 이상의 화합물을 포함하는 반응 혼합물을 제조하는 단계 를 포함하는 방법을 제공한다.

Process for producing C3 chlorinated alkane and alkene compounds

A process for producing a reaction mixture comprising a plurality of C3 chlorinated alkane isomers comprising chlorinating a C3 chlorinated alkane starting material in a chlorination zone to produce the plurality of C3 chlorinated alkane isomers, the plurality of C3 chlorinated alkane isomers each having at least one more chlorine atom than the C3 chlorinated alkane starting material, wherein the concentration of the C3 chlorinated alkane starting material is controlled such that conversion of the C3 chlorinated alkane starting material to the plurality of C3 chlorinated alkane isomers, represented by the molar ratio of the C3 chlorinated alkane starting material: C3 chlorinated alkane isomers in the reaction mixture present in the chlorination zone, does not exceed about 40:60.

METHODS OF MAKING CHLORINATED HYDROCARBONS

Methods for the manufacture of 1,1,1,2,3-pentachloropropane from 1,1,1,3-tetrachloropropane and chlorine are disclosed. Improved methods are provided for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,2,3-pentachloropropane. Methods are also disclosed for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,3-tetrachloropropane and chlorine and for the manufacture of 1,1,2,3-tetrachloropropene from carbon tetrachloride, ethylene, and chlorine.

METHOD FOR PRODUCING 1,2,3,4-TETRACHLOROHEXAFLUOROBUTANE AND METHOD FOR PURIFYING 1,2,3,4-TETRACHLOROHEXAFLUOROBUTANE

Disclosed is a method for producing 1,2,3,4-tetrachlorohexafluorobutane, which is characterized in that 1,2,3,4-tetrachlorobutane is reacted with fluorine in the presence of a solvent containing hydrogen fluoride. The 1,2,3,4-tetrachlorobutane may be obtained by chlorination of 3,4-dichlorobutene-1. Also disclosed is a method for purifying the thus-obtained 1,2,3,4-tetrachlorohexafluorobutane. This method enables to commercially efficiently produce 1,2,3,4-tetrachlorohexafluorobutane, which is useful as a synthesis material for hexafluoro-1,3-butadiene that is used, for example, as an etching gas for semiconductors, by using 1,2,3,4-tetrachlorobutane which has been conventionally discarded as a by-product of chloroprene.

DIAMONDOID-CONTAINING MATERIALS IN MICROELECTRONICS

Novel uses of diamondoid-containing materials in the field of microelectronics are disclosed. Embodiments include, but are not limited to, thermally conductive films in integrated circuit packaging, low-k dielectric layers in integrated circuit multilevel interconnects, thermally conductive adhesive films, thermally conductive films in thermoelectric cooling devices, passivation films for integrated circuit devices (ICs), and field emission cathodes. The diamondoids employed in the present invention may be selected from lower diamondoids, as well as the newly provided higher diamondoids, including substituted and unsubstituted diamondoids. The higher diamondoids include tetramantane, pentamantane, hexamantane, heptamantane, octamantane, nonamantane, decamantane, and undecamantane. The diamondoid-containing material may be fabricated as a diamondoid-containing polymer, a diamondoid-containing sintered ceramic, a diamondoid ceramic composite, a CVD diamondoid film, a self-assembled diamondoid ...

METHOD OF PREPARING IODINATED AROMATIC COMPOUNDS

The present invention relates to a method of preparing iodinated aromatic compounds, and more preferably a method of preparing iodinated aromatic compounds comprising a step of iodinating a react ant including an aromatic compound, a di-iodo aromatic compound or water, and iodine (I2) in the presence of a zeolite catalyst and oxygen. The method of the present invention has an advantage that by iodination of a reactant including the aromatic compound, and the di~ iodo aromatic compound or water in the presence of the zeolite catalyst and oxygen, the temperature of the iodinating reactor can be controlled reliably and constantly, thereby resulting in improved productivity per unit weight of catalyst and inhibition of a side reaction in accordance with suppression of producing impurities. In addition, the productivity of the iodinated aromatic compound, preferably the di-iodo aromatic compound, more preferably a p-di-iodo aromatic compound can be improved, and thus can be widely used in the ...

PROCESS FOR PRODUCING FLUORINATED ACRYLIC ESTER

A mixture of fluoroalkylalcohols of the formula C2F5(CF2CF2)nCH2CH2OH (n is an integer of ≥0) wherein the sum of such fluoroalkylalcohols of n=3 and n=4 contained is ≥ 85 mol% is provided. This mixture is reacted with an acrylic acid compound, and any C2F5(CF2CF2)nCH2CH2OH unreacted is removed. Thus, there can be obtained a mixture of fluorinated acrylic esters wherein the content of impurities (namely, olefins of the formula C2F5(CF2CF2)nCH=CH2 and alcohols of the formula C2F5(CF2CF2)nCH2CH2OH) is low.

PROCESSES FOR SEPARATION OF FLUOROOLEFINS FROM HYDROGEN FLUORIDE BY AZEOTROPIC DISTILLATION

The present disclosure relates to a process for separating a fluoroolefin from a mixture comprising hydrogen fluoride and fluoroolefin, comprising azeotropic distillation both with and without an entrainer. In particular are disclosed processes for separating any of HFC-1225ye, HFC-1234ze, HFC-1234yf or HFC-1243zf from HF.

Process for making 1,2-dichloroethane

The disclosure relates to a process for making 1,2-dichloroethane by reacting ethylene and chlorine in a reaction zone having a liquid medium containing chlorinated C2 -hydrocarbons circulated therein. To this end, the disclosure provides: (a) for approximately equimolar proportions of ethylene and chlorine to be introduced into the circulated liquid medium; for the whole to be reacted in a reaction zone at a temperature of about 75° up to 200° C. under a pressure of about 1 up to 15 bars, the mean sojourn time of the reaction mixture in the mixing zone and reaction zone being equal to about 1 to 15 hours; (b) for a portion of liquid reaction mixture to be removed from the reaction zone and subdivided into two streams, for one of these streams to be passed through a heat exchanger for the abstraction of calorific energy and reduction of its initial temperature, and for it to be recycled to the mixing and reaction zone; for the second stream to be introduced into an expansion vessel and ...

Antifoulant composition comprising an acrylate ester containing C4 -C22 alcohol esters and amino alcohol esters and phenylene diamine

A method for preventing fouling of ethylene dichloride distillation units which comprises treating the feed to such units with a fouling preventing amount of a composition comprising: ...

Process for producing 2,3,3,3-tetrafluoropropene

The instant invention relates to a process and method for manufacturing 2,3,3,3-tetrafluoropropene by dehydrohalogenating a reactant stream of 2-chloro-1,1,1,2-tetrafluoropropane that is substantially free from impurities, particularly halogenated propanes, propenes, and propynes.

Process for separating hydrogen fluoride from organic feedstocks

Provided is a process for purifying an organic feedstock comprising (a) distilling a raw organic feedstock comprising hydrogen fluoride, 2-chloro-1,1,1,2-tetrafluoropropane, and 2-chloro-3,3,3-trifluoropropene to produce a first distillate stream comprising an azeotrope-like composition of 2-chloro-1,1,1,2-tetrafluoropropane, 2-chloro-3,3,3-trifluoropropene, and hydrogen fluoride, and a first bottoms stream rich in hydrogen fluoride; (b) cooling said first distillate stream to produce an intermediate composition comprising an organic layer rich in 2-chloro-1,1,1,2-tetrafluoropropane and 2-chloro-3,3,3-trifluoropropene, and an acid layer rich in hydrogen fluoride; and, optionally but preferably, (c) distilling said organic layer to produce a second distillate stream comprising an azeotrope-like composition of 2-chloro-1,1,1,2-tetrafluoropropane, 2-chloro-3,3,3-trifluoropropene, and hydrogen fluoride, and a second bottoms stream comprising a purified organic feedstock substantially free of hydrogen fluoride.

Process for producing trans-1233zd

Trans-1233zd, the trans-isomer of 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd) can be used as blowing agents, solvents, cleaning agents, as well as monomers of macromolecule compounds, and can be prepared through the dehydrochlorination of 1,1,1-trifluoro-3,3-dichloropropane (HCFC-243fa) with the help of a catalyst. The present invention is directed to an integrated process is proposed to produce trans-1233zd from 243fa, which is consisted of the following four major unit operations: (1) Catalytic dehydrochlorination of 243fa into trans/cis-1233zd, (2) HCl recovery, (3) Catalytic isomerization of cis-1233zd into trans-1233zzd, and (4) Isolation of trans-1233zd.

Azeotrope-Like Composition of Hexafluoropropane, Hexafluoropropene and Hydrogen Fluoride

The present invention relates to an azeotropic or azeotrope-like mixture consisting essentially of 1,1,1,2,3,3-hexafluoropropane, hexafluoropropene and hydrogen fluoride. 112-. (canceled)13. A method for removing 1 ,1 ,1 ,2 ,3 ,3-hexafluoropropane from a mixture containing 1 ,1 ,1 ,2 ,3 ,3-hexafluoropropane and at least one impurity , comprising adding hydrogen fluoride and , optionally , hexafluoropropene to the mixture in an effective amount to form an azeotropic or azeotrope-like composition of 1 ,1 ,1 ,2 ,3 ,3-hexafluoropropane , hexafluoropropene , and hydrogen fluoride , and separating the azeotropic composition from the impurity.14. The method of wherein the impurity does not form an azeotropic mixture with 1 claim 13 ,1 claim 13 ,1 claim 13 ,2 claim 13 ,3 claim 13 ,3-hexafluoropropane claim 13 , hexafluoropropene claim 13 , hydrogen fluoride or a mixture thereof.15. The method of wherein the impurity does form an azeotropic mixture with 1 claim 13 ,1 claim 13 ,1 claim 13 ,2 claim 13 ,3 claim 13 ,3-hexafluoropropane claim 13 , hexafluoropropene claim 13 , hydrogen fluoride or a mixture thereof.16. The method of wherein the impurity comprises a halocarbon.17. The method of wherein the impurity is miscible with 1 claim 13 ,1 claim 13 ,1 claim 13 ,2 claim 13 ,3 claim 13 ,3-hexafluoropropane.18. The method of wherein the impurity is selected from the group consisting of 1 claim 13 ,1 claim 13 ,1 claim 13 ,2 claim 13 ,3-pentafluoropropane claim 13 , 1 claim 13 ,1 claim 13 ,1 claim 13 ,3 claim 13 ,3-pentafluoropropane claim 13 , 1 claim 13 ,1 claim 13 ,1 claim 13 ,2-tetrafluoropropane claim 13 , 1 claim 13 ,1 claim 13 ,1 claim 13 ,3-tetrafluoropropane claim 13 , (E)1 claim 13 ,2 claim 13 ,3 claim 13 ,3 claim 13 ,3-pentafluoropropene claim 13 , (Z)1 claim 13 ,2 claim 13 ,3 claim 13 ,3 claim 13 ,3-pentafluoropropene claim 13 , 3 claim 13 ,3 claim 13 ,3-trifluoropropene claim 13 , 1 claim 13 ,1 claim 13 ,1-trifluoropropane claim 13 , 3 claim 13 ,3 claim 13 ,3- ...

Integrated process to coproduce trans-1-chloro-3,3,3-trifluoropropene, trans-1,3,3,3-tetrafluoropropene, and 1,1,1,3,3-pentafluoropropane

Disclosed is an integrated manufacturing process to co-produce (E) 1-chloro-3,3,3-trifluoropropene, (E) 1,3,3,3-tetrafluoropropene, and 1,1,1,3,3-pentafluoro-propane starting from a single starting feed material or a mixture of unsaturated hydrochloro-carbon feed materials comprising 1,1,1,3-tetrachloropropene and/or 1,1,3,3-tetrachloro-propene. The process includes a combined liquid or vapor phase reaction/purification operation which directly produces (E) 1-chloro-3,3,3-trifluoro-propene (1233zd (E)) from these feed materials, which may also include 240fa. In the second liquid phase fluorination reactor 1233zd (E) is contacted with HF in the presence of catalyst to produce 1,1,1,3,3-pentafluoropropane (245fa) with high conversion and selectivity. A third reactor is used for dehydrofluorination of 245fa to produce (E) 1,3,3,3-tetrafluoro-propene (1234ze (E)) by contacting in the liquid phase with a caustic solution or in the vapor phase using a dehydrofluorination catalyst. This operation may be followed by one or more purification processes to recover the 1234ze (E) product.

COMPOSITIONS CONTAINING A COMBINATION OF Z AND E STEREOISOMERS OF HYDROFLUOROOLEFINS

Disclosed are the combinations containing Z and E stereoisomers of hydrofluoroolefins where the more toxic isomer is less than about 30% weight of the combination (vs the sum of Z+E), to minimize the toxicity impact in the applications they will. be used for such as cooling and heat fluids, foams blowing agents or solvents. Also disclosed are means to obtain combinations containing Z and E stereoisomers of hydrofluoroolefins. 1. A method of preparing a combination of Z and E isomers of a hydrofluoroolefin comprising from a trace up to about 30% by weight of the E isomer from a combination having more than about 30% by weight of the E isomer comprising distillation of a combination of Z and E isomers of a hydrofluoroolefin having more than about 30% by weight of the E isomer.2. A method of preparing a combination of Z and E isomers of a hydrofluoroolefin comprising from a trace up to about 30% by weight of the E isomer from a combination having more than about 30% by weight of the E isomer comprising reactive distillation of a combination of Z and E isomers of a hydrofluoroolefin having more than about 30% by weight of the E isomer followed by distillation.3. A method of preparing a combination of Z and E isomers of a hydrofluoroolefin comprising from a trace up to about 30% by weight of the E isomer from a combination having more than about 30% by weight of the E isomer comprising isomerization in the presence of a catalyst of a combination of Z and E isomers of a hydrofluoroolefin having more than about 30% by weight of the E isomer.4. The methods of wherein said catalyst is selected from fluorinated alumina or activated carbon.5. The methods of wherein said isomerization takes place in the presence of a Lewis acid.6. A method of preparing a combination of Z and E isomers of a hydrofluoroolefin comprising from a trace up to about 30% by weight of the E isomer from a combination having more than about 30% by weight of the E isomer comprising extractive distillation ...

PROCESS FOR SEPARATING HYDROGEN FLUORIDE FROM ORGANIC FEEDSTOCKS

Provided is a process for purifying an organic feedstock comprising (a) distilling a raw organic feedstock comprising hydrogen fluoride, 2-chloro-1,1,1,2-tetrafluoropropane, and 2-chloro-3,3,3-trifluoropropene to produce a first distillate stream comprising an azeotrope-like composition of 2-chloro-1,1,1,2-tetrafluoropropane, 2-chloro-3,3,3-trifluoropropene, and hydrogen fluoride, and a first bottoms stream rich in hydrogen fluoride; (b) cooling said first distillate stream to produce an intermediate composition comprising an organic layer rich in 2-chloro-1,1,1,2-tetrafluoropropane and 2-chloro-3,3,3-trifluoropropene, and an acid layer rich in hydrogen fluoride; and, optionally but preferably, (c) distilling said organic layer to produce a second distillate stream comprising an azeotrope-like composition of 2-chloro-1,1,1,2-tetrafluoropropane, 2-chloro-3,3,3-trifluoropropene, and hydrogen fluoride, and a second bottoms stream comprising a purified organic feedstock substantially free of hydrogen fluoride. 117-. (canceled)18. A process for producing 2 ,3 ,3 ,3-tetrafluoropropene comprising:a. reacting 2-chloro-3,3,3-trifluoropropene with hydrogen fluoride to produce a crude product stream comprising 2-chloro-1,1,1,2-tetrafluoropropane, hydrogen fluoride, and 2-chloro-3,3,3-trifluoropropene;b. distilling said crude product stream to produce a first distillate stream comprising an azeotrope-like composition of 2-chloro-1,1,1,2-tetrafluoropropane, 2-chloro-3,3,3-trifluoropropene, and hydrogen fluoride, and a first bottoms stream rich in hydrogen fluoride;c. cooling said distillate stream to produce a first intermediate composition comprising an organic layer rich in 2-chloro-1,1,1,2-tetrafluoropropane and 2-chloro-3,3,3-trifluoropropene, and an acid layer rich in hydrogen fluoride;d. distilling said organic layer to produce a second distillate stream comprising an azeotrope-like composition of 2-chloro-1,1,1,2-tetrafluoropropane, 2-chloro-3,3,3-trifluoropropene, and ...

AZEOTROPE-LIKE COMPOSITION OF 2-CHLORO-3,3,3-TRIFLUOROPROPENE (HCFC-1233XF) AND HYDROGEN FLUORIDE (HF)

Provided are azeotropic and azeotrope-like compositions of 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) and hydrogen fluoride (HF). Such azeotropic and azeotrope-like compositions are useful as intermediates in the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf). 112-. (canceled)13. A method of forming an azeotropic or azeotrope-like composition which comprises forming a blend consisting essentially of from about 6.2 mole percent to about 90.7 mole percent hydrogen fluoride and from about 9.3 mole percent to about 93.8 mole percent 2-chloro-3 ,3 ,3-trifluoropropene to thereby form an azeotropic or azeotrope-like composition having a boiling point of from about 0° C. to about 61° C. at a pressure of from about 15 psia to about 107 psia.14. The method of wherein the composition consists of hydrogen fluoride and 2-chloro-3 claim 13 ,3 claim 13 ,3-trifluoropropene.15. The method of wherein the hydrogen fluoride in present in an amount of from about 15 to about 50 weight percent.16. The method of wherein the 2-chloro-3 claim 13 ,3 claim 13 ,3-trifluoropropene is present in the amount from about 50 to about 85 weight percent.17. The method of wherein the composition has a boiling point of about 0° C. at a pressure of about 15 psia; or a boiling point of from about 25° C. at a pressure of about 38 psia; or a boiling point of about 61° C. at a pressure of about 107 psia.18. The method of further comprising the step of separating 2-chloro-3 claim 13 ,3 claim 13 ,3-trifluoropropene from an azeotropic or azeotrope-like composition of 2-chloro-3 claim 13 ,3 claim 13 ,3-trifluoropropene and hydrogen fluoride using pressure swing distillation.19. The method of further comprising the step of feeding the azeotropic or azeotrope-like composition of 2-chloro-3 claim 13 ,3 claim 13 ,3-trifluoropropene and hydrogen fluoride to a fluorination reactor as a source of hydrogen fluoride.20. A method for removing 2-chloro-3 claim 13 ,3 claim 13 ,3-trifluoropropene from a mixture ...

Catalytical synthesis of hydrohalocarbons

A process is disclosed for producing addition compound CF 3 CCl 2 CH 2 CClXR, wherein X=H, F, Cl or Br, and R=H or a perhalogenated alkyl group, provided that X and R are not both H. The process involves a liquid phase reaction of 1,1,1-trichlorotrifluoroethane with CH 2 ═CXR in the presence of an addition catalyst.

MANUFACTURING METHOD OF PURIFIED 1-CHLORO-2,3,3,3-TETRAFLUOROPROPENE AND PURIFIED 1-CHLORO-2,3,3,3-TETRAFLUOROPROPENE (Z)

There is provided a method of efficiently manufacturing purified 1224containing 1224at a high concentration from a mixture containing 1224and a compound that forms an azeotropic composition or an azeotropic-like composition with 1224A manufacturing method of purified 1224includes making a first mixture of 1224and a compound (X1) forming an azeotropic composition or an azeotropic-like composition with 1224to be brought into contact with a first extraction solvent to obtain purified 1224not substantially containing the compound (X1). 1. A manufacturing method of purified 1-chloro-2 ,3 ,3 ,3-tetrafluoropropene , comprising making a first mixture of 1-chloro-2 ,3 ,3 ,3-tetrafluoropropene and a compound (X1) forming an azeotropic composition or an azeotropic-like composition with 1-chloro-2 ,3 ,3 ,3-tetrafluoropropene to be brought into contact with a first extraction solvent to obtain purified 1-chloro-2 ,3 ,3 ,3-tetrafluoropropene not substantially containing the compound (X1).2. A manufacturing method of purified 1-chloro-2 ,3 ,3 ,3-tetrafluoropropene (Z) , comprising making a second mixture of 1-chloro-2 ,3 ,3 ,3-tetrafluoropropene (Z) and a compound (X2) forming an azeotropic composition or an azeotropic-like composition with 1-chloro-2 ,3 ,3 ,3-tetrafluoropropene (Z) to be brought into contact with a second extraction solvent to obtain purified 1-chloro-2 ,3 ,3 ,3-tetrafluoropropene (Z) not substantially containing the compound (X2).3. The manufacturing method according to claim 1 , whereinthe compound (X1) is a compound which exhibits a relative volatility between 1-chloro-2,3,3,3-tetrafluoropropene and the compound (X1) in the first mixture of 0.9 to 1.1.4. The manufacturing method according to claim 2 , whereinthe compound (X2) is a compound which exhibits a relative volatility between 1-chloro-2,3,3,3-tetrafluoropropene (Z) and the compound (X2) in the second mixture of 0.9 to 1.1.5. The manufacturing method according to claim 1 , whereinthe first extraction ...

Method for recycling catalyst in the production of chlorinated alkanes

The present invention provides highly efficient processes for the preparation of chlorinated alkanes. The processes comprise contacting an alkene, halogenated alkene, or combinations thereof, a halogenated methane comprising at least one chlorine atom, at least one solid metallic catalyst, and a ligand forming a reaction mixture in a reactor. The product mixture does not contain a phase transfer catalyst. After a product mixture is formed, various fractions, distillation streams, and effluent streams are separated and/or treated with an aqueous alkaline substance. This treatment removes at least a portion of the metal and through recycling of the heavy fraction, treated product mixture, or combinations thereof, allows for the kinetics of the process to be maintained or increased.

Processes and systems for recovering r1233zd in purified form

Aspects of the invention relate to systems and processes for recovering R1233zd in purified form from compositions additionally comprising hydrogen fluoride. In accordance with one aspect, the invention provides a process that includes separating a feed stream comprised of hydrogen fluoride and R1233zd using azeotropic distillation in a first distillation column to produce a first distillate stream comprised of hydrogen fluoride and R1233zd and a first bottoms stream consisting essentially of hydrogen fluoride. The first distillation column is operated at a first pressure. The process further includes separating the first distillate stream using azeotropic distillation in a second distillation column to produce a second distillate stream comprised of hydrogen fluoride and R1233zd and a second bottoms stream consisting essentially of R1233zd. The second distillation column is operated at a second pressure that may be different than the first pressure of the first distillation column.

METHOD OF OBTAINING A COMBINATION OF Z AND E STEREOISOMERS OF HYDROFLUOROOLEFINS

Disclosed are the combinations containing Z and E stereoisomers of hydrofluoroolefins where the more toxic isomer is less than about % weight of the combination (vs the sum of Z+E), to minimize the toxicity impact in the applications they will be used for such as cooling and heat fluids, foams blowing agents or solvents. Also disclosed are means to obtain combinations containing Z and E stereoisomers of hydrofluoroolefins.

TERNARY AZEOTROPIC OR QUASI-AZEOTROPIC COMPOSITION COMPRISING HF, 2,3,3,3-TETRAFLUOROPROPENE AND 1,1,1,2,2-PENTAFLUOROPROPANE

The present invention relates to an azeotropic or quasi-azeotropic composition comprising hydrogen fluoride, 2,3,3,3-tetrafluoropropene and 1,1,1,2,2-pentafluoropropane, characterized in that said composition has a boiling point above 40° C. 1. An azeotropic or quasi-azeotropic composition comprising hydrogen fluoride , 2 ,3 ,3 ,3-tetrafluoropropene and 1 ,1 ,1 ,2 ,2-pentafluoropropane , wherein said composition has a boiling point above 45° C.2. The composition as claimed in claim 1 , wherein the composition is obtained for a pressure greater than 11 bara.3. The composition as claimed in claim 1 , it wherein the composition has a boiling point of between 40° C. and 100° C. at a pressure of between 11 and 30 bara.4. The composition as claimed in claim 1 , wherein the hydrogen fluoride content is from 10 to 70 mol % claim 1 , on the basis of the molar composition of said composition.5. The composition as claimed in claim 1 , wherein the 2 claim 1 ,3 claim 1 ,3 claim 1 ,3-tetrafluoropropene content is from 10 to 90 mol % claim 1 , on the basis of the molar composition of said composition.6. The composition as claimed in claim 1 , wherein the 1 claim 1 ,1 claim 1 ,1 claim 1 ,2 claim 1 ,2-pentafluoropropane content is from 1 to 50 mol % claim 1 , on the basis of the molar composition of said composition.7. The composition as claimed in claim 1 , wherein the boiling point of said azeotropic or quasi-azeotropic composition is between 45° C. and 65° C. at a pressure of between 13 and 20 bara.8. The composition as claimed in claim 1 , wherein the composition comprises 31 mol % hydrogen fluoride claim 1 , 66 mol % 2 claim 1 ,3 claim 1 ,3 claim 1 ,3-tetrafluoropropene and 3 mol % 1 claim 1 ,1 claim 1 ,1 claim 1 ,2 claim 1 ,2-pentafluoropropane claim 1 , and has a boiling point of 60° C. at a pressure of 18 bara.9. The composition as claimed in claim 1 , wherein the composition consists of hydrogen fluoride claim 1 , 2 claim 1 ,3 claim 1 ,3 claim 1 ,3-tetrafluoropropene and 1 ...

IMPROVED PROCESSES FOR PREPARING HALOGENATED ALKANES

The present invention provides improved processes for preparing halogenated alkanes. In particular, the processes comprise reacting an alkene, a halogenated alkene, or combinations thereof and a halogenated methane with at least one chlorine atom. 1. A process for producing halogenated alkanes , the process comprising:a. forming a reaction mixture in a reactor by contacting: a liquid phase comprising a halogenated methane comprising at least one chlorine atom, at least one phosphorus containing compound comprising a trialkylphosphate, a trialkylphosphite, or combinations thereof; and at least one catalyst comprising a metal, metal salt, or combinations thereof; an alkene, halogenated alkene, or combinations thereof, thereby forming a reaction mixture; wherein the alkene, halogenated alkene, or combinations thereof and is at least partially absorbed into the liquid phase;b. stirring the reaction mixture;c. heating the reaction mixture; andd. producing halogenated alkanes and heavy by-products;wherein there is a gas phase above the reaction mixture and when the order of steps b. and c. may be switched or conducted at the same time; (I) stirring the reaction mixture comprises jet mixing; and', '(II) the process further comprises step e., wherein step e. comprises:', 'i. transferring at least part of the reactor contents into a first separator where two product streams (a) and (b) are formed: wherein product stream (a) comprises the halogenated alkane, halogenated methane comprising at least one chlorine atom, and an alkene or halogenated alkene; wherein product stream (b) comprises the heavy by-products, the at least one phosphorous containing compound, and at least one catalyst;', 'ii. contacting at least a portion of product stream (b) with an ion exchange resin to form product stream (c) wherein product stream (c) contains less of at least one metal ion when compared to product stream (b); and', 'iii. returning at least a portion of product stream (c) to the reactor ...

PROCESS FOR PRODUCING HIGHLY PURE CHLORINATED ALKANE

Disclosed is a process for producing highly pure chlorinated alkane in which a chlorinated alkene is contacted with chlorine in a reaction zone to produce a reaction mixture containing the chlorinated alkane and the chlorinated alkene, and extracting a portion of the reaction mixture from the reaction zone, wherein the molar ratio of chlorinated alkane:chlorinated alkene in the reaction mixture extracted from the reaction zone does not exceed 95:5. 1. A highly pure chlorinated alkane composition , as a feedstock for use in the synthesis of a chlorinated alkene , or a fluorinated alkane or fluorinated alkene or chlorofluorinated alkene or mixtures thereof , wherein the composition has been obtained by feeding a chlorinated alkene into a reaction zone and contacting it with chlorine in said reaction zone to produce a reaction mixture containing the chlorinated alkane and the chlorinated alkene , and extracting a portion of the reaction mixture from the reaction zone , wherein the molar ratio of chlorinated alkane:chlorinated alkene in the reaction mixture extracted from the reaction zone does not exceed 95:5 , and wherein the composition obtained from the reaction mixture comprises:the chlorinated alkane product in amounts of at least about 99.7%, at least about 99.8%, at least about 99.9%, or at least about 99.95%, and one or more of the following:oxygenated organic compounds in amounts of less than about 500 ppm, about 250 ppm or less, about 100 ppm or less, about 50 ppm or less, or about 10 ppm or less,isomers of the chlorinated alkane of interest amounts less than about 500 ppm or less, about 250 ppm or less, or about 100 ppm or less,non-isomeric alkane impurities in amounts of less than about 500 ppm, about 250 ppm or less, or about 100 ppm or less,chlorinated alkenes in amounts of less than about 500 ppm, about 250 ppm or less, about 100 ppm or less, or about 50 ppm or less,water in amounts of less than about 500 ppm, about 250 ppm or less, about 100 ppm or less ...

Process for the separation of 2-chloro-1,1-difluoroethane and trans-dichloroethylene

The invention relates to the separation of a mixture comprising 2-chloro-1,1-difluoroethane (R142) and trans-dichloroethylene (TDCE) by extractive distillation and more particularly to a separation process wherein the TDCE is removed selectively by extractive distillation, thus leading to purified 2-chloro-1,1-difluoroethane.

METHOD FOR PRODUCING (Z)-1-CHLORO-2,3,3-TRIFLUORO-1-PROPENE

Provided is a method for producing (Z)-1-chloro-2,3,3-trifluoro-1-propene where (E)-1-chloro-2,3,3-trifluoro-1-propene and water can be efficiently removed and (Z)-1-chloro-2,3,3-trifluoro-1-propene with higher purity can be obtained at a higher recovery ratio. The method for producing (Z)-1-chloro-2,3,3-trifluoro-1-propene includes: distilling a distillation composition which contains (Z)-1-chloro-2,3,3-trifluoro-1-propene, (E)-1-chloro-2,3,3-trifluoro-1-propene and water to remove (E)-1-chloro-2,3,3-trifluoro-1-propene and water as an azeotropic composition or an azeotropic-like composition. 16-. (canceled)7: A composition , comprising:(Z)-1-chloro-2,3,3-trifluoro-1-propene;(E)-1-chloro-2,3,3-trifluoro-1-propene; andwater,wherein a proportion of (Z)-1-chloro-2,3,3-trifluoro-1-propene with respect to a sum total of contents of the (Z)-1-chloro-2,3,3-trifluoro-1-propene, (E)-1-chloro-2,3,3-trifluoro-1-propene and water is 90 mass % or more.8: The composition according to claim 7 , wherein a content of water in the composition is 0.01% or less.9: The composition according to claim 7 , wherein the proportion of (Z)-1-chloro-2 claim 7 ,3 claim 7 ,3-trifluoro-1-propene with respect to a sum total of contents of the (Z)-1-chloro-2 claim 7 ,3 claim 7 ,3-trifluoro-1-propene claim 7 , (E)-1-chloro-2 claim 7 ,3 claim 7 ,3-trifluoro-1-propene and water is 93 mass % or more.10: The composition according to claim 7 , wherein the proportion of (Z)-1-chloro-2 claim 7 ,3 claim 7 ,3-trifluoro-1-propene with respect to a sum total of contents of the (Z)-1-chloro-2 claim 7 ,3 claim 7 ,3-trifluoro-1-propene claim 7 , (E)-1-chloro-2 claim 7 ,3 claim 7 ,3-trifluoro-1-propene and water is 95 mass % or more.11: The composition according to claim 7 , wherein the proportion of (Z)-1-chloro-2 claim 7 ,3 claim 7 ,3-trifluoro-1-propene with respect to a sum total of contents of the (Z)-1-chloro-2 claim 7 ,3 claim 7 ,3-trifluoro-1-propene claim 7 , (E)-1-chloro-2 claim 7 ,3 claim 7 ,3-trifluoro ...

Process for Producing 2-Chloro-1,3,3,3-Tetrafluoropropene

Disclosed is a process for producing 2-chloro-1,3,3,3-tetrafluoropropene (1224), including a first step of separating 2,3-dichloro-1,1,1,3-tetrafluoropropane 234da) into erythro form and threo form, and a second step of bringing the separated erythro form or threo form in contact with a base to obtain 2-chloro-1,3,3,3-tetrafluoropropene (1224). The first step is a step of separating 234da by distillation to achieve a separation into a fraction containing mainly erythro form and a fraction containing mainly threo form. In the second step, 1224 cis form is obtained from the erythro form, and 1224 trans form is obtained from the threo form. By this process, it is possible to selectively and efficiently produce cis form or trans form of 2-chloro-1,3,3,3-tetrafluoropropene (1224). 1. A process for producing 2-chloro-1 ,3 ,3 ,3-tetrafluoropropene (1224) , comprising:a first step (separation step) that is a separation step for separating 2,3-dichloro-1,1,1,3-tetrafluoropropane (234da) and is a step (1a) for taking out a component (A) having a molar ratio of threo form to erythro form of 100:0 to 80:20 or a step (1b) for taking out a component (B) having a molar ratio of threo form to erythro form of 0:100 to 20:80; anda second step of bringing the component (A) or the component (B) into contact with a base.2. The production process of claim 1 , wherein the first step is a step (1a) of taking out a fraction (A) having a molar ratio of threo form to erythro form of 100:0 to 80:20 or a step (1b) of taking out a fraction (B) having a molar ratio of threo form to erythro form of 0:100 to 20:80.3. The production process of claim 1 , wherein the second step is a second step A of bringing component (A) having a molar ratio of threo form to erythro form of 100:0 to 80:20 into contact with the base claim 1 , thereby obtaining 2-chloro-1 claim 1 ,3 claim 1 ,3 claim 1 ,3-tetrafluoropropene (1224) having a molar ratio of trans form to cis form of 100:0 to 80:20.4. The production ...

METHOD FOR PURIFYING 1,1,1,2,3-PENTAFLUOROPROPANE AND USE THEREOF FOR OBTAINING HIGH-PURITY 2,3,3,3-TETRAFLUOROPROPENE

The present invention relates to a process for purifying 1,1,1,2,3-pentafluoropropane, comprising the steps of: i) providing a composition A1 comprising 1,1,1,2,3-pentafluoropropane and 1,1,1,3-tetrafluoropropane; ii) purifying, preferably distilling, said composition A1 under conditions that are sufficient to form at least two streams including a first stream comprising 1,1,1,2,3-pentafluoropropane and a second stream comprising 1,1,1,3-tetrafluoropropane. The present invention also relates to a process for producing 2,3,3,3-tetrafluoropropene and a composition comprising 2,3,3,3-tetrafluoropropene. 1. A composition comprising:at least 99.5% by weight of 1,1,1,2,3-pentafluoropropane,less than 500 ppm of 1,1,1,3-tetrafluoropropane;less than 1000 ppm of 1,1,1,2,3,3-hexafluoropropane;less than 50 ppm of 1,1,2-trifluoroethane and/or 1,1,1-trifluoroethane;less than 100 ppm of 1,1,1,2-tetrafluoropropane;on the basis of the total weight of the composition.2. A composition comprising:at least 99.5% by weight of 2,3,3,3-tetrafluoropropene,less than 100 ppm of 3,3,3-trifluoropropene,less than 100 ppm of 1,2,3,3,3-pentafluoropropene,less than 200 ppm of 1,1,2-trifluoroethane and/or 1,1,1-trifluoroethane, andless than 20 ppm of 1,1,1,2,3-pentafluoropropane,on the basis of the total weight of the composition.3. The composition of comprising from 0 ppm to 100 ppm of 1 claim 1 ,1 claim 1 ,1 claim 1 ,2 claim 1 ,3 claim 1 ,3-hexafluoropropane on the basis of the total weight of the composition.4. The composition of comprising from 0 ppm to 25 ppm of 1 claim 3 ,1 claim 3 ,1 claim 3 ,2 claim 3 ,3 claim 3 ,3-hexafluoropropane on the basis of the total weight of the composition.5. The composition of comprising from 0 ppm to 10 ppm 1 claim 1 ,1 claim 1 ,1 claim 1 ,3-tetrafluoropropane on the basis of the total weight of the composition. This application is a Divisional application of U.S. application Ser. No. 16/959,197, filed on Jun. 30, 2020, which was a U.S. National Stage ...

PROCESS FOR PURIFYING (HYDRO)FLUOROPROPENES CONTAMINATED WITH HALOGENATED ETHANE

A process for treating a composition comprising one or more desired (hydro)fluoroolefins and one or more undesired halogenated ethanes, halogenated methanes or mixtures thereof so as to reduce the concentration of at least one undesired halogenated ethane or halogenated methane, the process comprising contacting the composition with an adsorbent comprising pores having openings which have a size across their largest dimension of about 6 Å or less. 1. A process for treating a composition comprising one or more desired (hydro)fluoropropenes and one or more undesired halogenated ethanes , so as to reduce the concentration of at least one undesired halogenated ethane the process comprising contacting the composition with an adsorbent comprising pores having openings which have a size across their largest dimension of about 6 Å or less.2. A process according to wherein the desired (hydro)fluoropropene comprises at least 10 wt % claim 1 , for example at least 20 wt % claim 1 , at least 30 wt % claim 1 , at least 40 wt % claim 1 , at least 50 wt % claim 1 , at least 60 wt % claim 1 , at least 70 wt % claim 1 , at least 80 wt % or at least 90 wt % of the composition to be treated.3. A process according to or wherein the adsorbent comprises having openings which have a size across their largest dimension of from about 4 Å to about 6 Å.4. A process according to any of to wherein the adsorbent comprises pores having openings which have a size across their largest dimension of about 5 Å.5. A process according to any of the preceding claims wherein the adsorbent is a molecular sieve.6. A process according to any of the preceding claims wherein the adsorbent comprises a zeolite.7. A process according to wherein the tetrafluoropropene is 2 claim 1 ,3 claim 1 ,3 claim 1 ,3-tetrafluoropropene (1234yf).8. A process according to any of the preceding claims wherein the at least one undesired halogenated ethane is a fluorinated ethane.9. A process according to wherein the fluorinated ...

Process for the preparation of fluoroolefin compounds

The subject of the invention is a process for the preparation of fluoroolefin compounds. It relates more particularly to a process for manufacturing a (hydro)fluoroolefin compound comprising (i) bringing at least one compound comprising from three to six carbon atoms, at least two fluorine atoms and at least one hydrogen atom, provided that at least one hydrogen atom and one fluorine atom are located on adjacent carbon atoms, into contact with potassium hydroxide in a stirred reactor, containing an aqueous reaction medium, equipped with at least one inlet for the reactants and with at least one outlet, in order to give the (hydro)fluoroolefin compound, which is separated from the reaction medium in gaseous form, and potassium fluoride, (ii) bringing the potassium fluoride formed in (i) into contact, in an aqueous medium, with calcium hydroxide in order to give potassium hydroxide and to precipitate calcium fluoride, (iii) separation of the calcium fluoride precipitated in step (ii) from the reaction medium and (iv) optionally, the reaction medium is recycled after optional adjustment of the potassium hydroxide concentration to step (i).

PROCESS FOR PURIFYING (HYDRO)HALOCARBON COMPOSITIONS

A process for treating a composition comprising one or more desired (hydro)halocarbons and one or more undesired halogenated hydrocarbon containing impurities so as to reduce the concentration of at least one undesired halogenated hydrocarbon containing impurity, the process comprising contacting the composition with an adsorbent comprising a carbon molecular sieve. 1. A composition that is substantially free of undesired halogenated hydrocarbon impurities , said composition obtained by a process of contacting a composition including the undesired halogenated hydrocarbon impurities with an adsorbent comprising a carbon molecular sieve ,wherein the undesired halogenated hydrocarbon containing impurities comprises one or more of a mono-, di- or tri-halomethane, (i) 1,1,1,2-tetrafluorethane, 1,1,1-trifluoroethane, 1,1-difluoroethane, perfluoroethane or other mono-, di-, tri- or tetra-fluoroethanes;', '(ii) 1,2-dichloro-1,1,2,2-tetrafluoroethane, 1,1,1-trichloro-2,2,2-trifluoroethane, 1,1-dichloro-1-fluoroethane, 1-chloro-1,1-difluoroethane, 1,1,1-trifluoro-2-chloroethane, 2,2-dichloro-1,1,1-trifluoroethane (R-123), 2-chloro-1,1,1,2-tetrafluoroethane and/or other (hydro)chlorofluoroethanes; and/or', '(iii) (hydro)chloroethanes, (hydro)bromoethanes and/or (hydro)iodomethanes., 'the desired (hydro)haloethanes are selected from'}2. The composition according to comprising 1 claim 1 ,1-difluoroethane (R-152a) claim 1 , 1 claim 1 ,1 claim 1 ,1 claim 1 ,2-tetrafluoroethane (R-134a) claim 1 , or mixtures thereof that is substantially free of undesired mono- claim 1 , di- or tri-halomethane impurities.3. The composition according to wherein the composition is substantially free of chloromethane.4. A composition comprising 1 claim 2 ,1-difluoroethane as a major component that substantially free of chloromethane.5. The composition according to as a propellant claim 1 , especially as a medical and/or pharmaceutical propellant.6. The composition according to as a medical and/or ...

METHOD FOR CO-PRODUCTION OF 1-CHLORO-3,3,3-TRIFLUOROPROPENE, 2,3,3,3-TETRAFLUOROPROPENE AND 1,3,3,3-TETRAFLUOROPROPENE

This invention discloses a method for co-production of 1-chloro-3,3,3-trifluoropropene, 2,3,3,3-tetrafluoropropene and 1,3,3,3-tetrafluoropropene. This method includes inputting the mixed gases of hydrogen fluoride and 1,1,1,3,3-pentachloropropane together with 1,1,2,3-tetrachloropropene into a first reactor for a reaction to obtain a reaction product; directly inputting the reaction product into a second reactor to perform a reaction in the presence of a catalyst; separating hydrogen chloride from the obtained product; obtaining 1-chloro-3,3,3-trifluoropropene, 2,3,3,3-tetrafluoropropene and 1,3,3,3-tetrafluoropropene respectively after water washing, alkaline washing, drying and rectifying. This invention has the advantages of flexible production, simple process, small investment, low energy consumption and high conversion rate. 17-. (canceled)8. A method for co-production of 1-chloro-3 ,3 ,3-trifluoropropene , 2 ,3 ,3 ,3-tetrafluoropropene and 1 ,3 ,3 ,3-tetrafluoropropene , the method comprising:{'sup': '−1', '(a) preheating and then directing hydrogen fluoride and 1,1,1,3,3-pentachloropropane into a first reactor in a molar ratio of 9:1-15:1, wherein the first reactor comprises an upper section filled with an aluminum oxide supported chromium metal catalyst and a lower section filled with a chromic oxide supported indium metal catalyst, wherein the hydrogen fluoride and the 1,1,1,3,3-pentachloropropane are reacted in the upper section of the first reactor at a temperature of 200-400° C. and at an air flow rate of 300-1,000 h, and a product from the upper section enters the lower section of the first reactor to continuously react with the 1,1,2,3-tetrachloropropane to obtain a first reaction product of the first reactor, wherein a molar ratio of the 1,1,2,3-tetrachloropropane to the hydrogen fluoride in the lower section of the first reactor is 3:9-5:9;'}{'sup': '−1', '(b) directly directing the first reaction product of the first reactor into a second reactor ...

PROCESS FOR PURIFYING (HYDRO)HALOCARBON COMPOSITIONS

A process for treating a composition comprising one or more desired (hydro)halocarbons and one or more undesired halogenated hydrocarbon containing impurities so as to reduce the concentration of at least one undesired halogenated hydrocarbon containing impurity, the process comprising contacting the composition with an adsorbent comprising a carbon molecular sieve. 1. A process for treating a composition comprising one or more desired (hydro)halocarbons and one or more undesired halogenated hydrocarbon containing impurities so as to reduce the concentration of at least one undesired halogenated hydrocarbon containing impurity ,wherein the undesired halogenated hydrocarbon containing impurities comprises one or more of a mono-, di- or tri-halomethane,the desired (hydro)halocarbons are selected from(i) 1,1,1,2-tetrafluorethane, 1,1,1-trifluoroethane, 1,1-difluoroethane, perfluoroethane or other mono-, di-, tri- or tetra-fluoroethanes;(ii) 1,2-dichloro-1,1,2,2-tetrafluoroethane, 1,1,1-trichloro-2,2,2-trifluoroethane, 1,1-dichloro-1-fluoroethane, 1-chloro-1,1-difluoroethane, 1,1,1-trifluoro-2-chloroethane, 2,2-dichloro-1,1,1-trifluoroethane (R-123), 2-chloro-1,1,1,2-tetrafluoroethane and/or other (hydro)chlorofluoroethanes; and/or(iii) (hydro)chloroethanes, (hydro)bromoethanes and/or (hydro)iodomethanes;and where the process comprises contacting the composition with an adsorbent comprising a carbon molecular sieve.2. The process according to claim 1 , wherein the contacting step is performed claim 1 , at least in part claim 1 , at a temperature of less than about 200° C. claim 1 , such as from about 5° C. to about 200° C.3. The process according to claim 1 , wherein the contacting step is performed claim 1 , at least in part claim 1 , at a temperature of about 20° C. to about 100° C. In still further preferred embodiments claim 1 , the process is performed claim 1 , at least in part claim 1 , at a temperature of about 20° C. to about 60° C. claim 1 , e.g. around 40° C. ...

DICHLOROMETHANE PURIFICATION METHOD AND PROCESS FOR PRODUCING DIFLUOROMETHANE USING THE SAME

To provide a dichloromethane purification method which can reduce the amount of stabilizers present in dichloromethane and is feasible in industry by a simple operation, a dichloromethane purification method includes bringing dichloromethane containing at least one stabilizer selected from the group consisting of 2-methyl-2-butene, hydroquinone and resorcinol into contact in a liquid phase state with a zeolite having an average pore size of 3 to 11 Å and thereby reducing the amount of the stabilizer. 1. A dichloromethane purification method comprising bringing dichloromethane containing at least one stabilizer selected from the group consisting of 2-methyl-2-butene , hydroquinone and resorcinol into contact in a liquid phase state with a zeolite having an average pore size of 3 to 11 Å and thereby reducing the amount of the stabilizer.2. The dichloromethane purification method according to claim 1 , wherein the zeolite is at least one selected from the group consisting of molecular sieve 3A claim 1 , molecular sieve 4A claim 1 , molecular sieve 5A claim 1 , molecular sieve 10X and molecular sieve 13X.3. The dichloromethane purification method according to claim 1 , wherein the contact between the dichloromethane and the zeolite in a liquid phase state is performed at a temperature of −15 to 65° C.4. A difluoromethane production process comprising:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, '(1) a step of purifying dichloromethane by the method described in ; and'}(2) a step of reacting the dichloromethane resulting from the step (1) with hydrogen fluoride in a reactor in a gas phase in the presence of a fluorination catalyst to form a gas including difluoromethane.5. The difluoromethane production process according to claim 4 , wherein the fluorination catalyst is a supported or bulk catalyst including a catalyst component containing chromium (III) oxide.6. The difluoromethane production process according to claim 4 , wherein the fluorination catalyst is a ...

PROCESS FOR THE PREPARATION OF FLUOROOLEFIN COMPOUNDS

The subject of the invention is a process for the preparation of fluoroolefin compounds. It relates more particularly to a process for manufacturing a (hydro)fluoroolefin compound comprising (i) bringing at least one compound comprising from three to six carbon atoms, at least two fluorine atoms and at least one hydrogen atom, provided that at least one hydrogen atom and one fluorine atom are located on adjacent carbon atoms, into contact with potassium hydroxide in a stirred reactor, containing an aqueous reaction medium, equipped with at least one inlet for the reactants and with at least one outlet, in order to give the (hydro)fluoroolefin compound, which is separated from the reaction medium in gaseous form, and potassium fluoride, (ii) bringing the potassium fluoride formed in (i) into contact, in an aqueous medium, with calcium hydroxide in order to give potassium hydroxide and to precipitate calcium fluoride, (iii) separation of the calcium fluoride precipitated in step (ii) from the reaction medium and (iv) optionally, the reaction medium is recycled after optional adjustment of the potassium hydroxide concentration to step (i). 111-. (canceled)12. A process for the manufacture of a fluoroolefin comprising:(a) dehydrofluorinating a fluoroalkane in the presence of KOH to produce a fluoroalkene;(b) withdrawing a reaction stream comprising spent KOH; and(c) recovering spent KOH.13. The process of wherein the fluoroalkane is comprised of a compound of formula CFCYRCR′XH claim 12 , in which Y represents a hydrogen atom or a halogen atom chosen from fluorine claim 12 , chlorine claim 12 , bromine or iodine and X represents a halogen atom chosen from fluorine claim 12 , chlorine claim 12 , bromine or iodine; n and p are integers and may independently take the value zero claim 12 , 1 or 2 provided that (n+p)=2 claim 12 , and R represents a fluorine atom when R′ represents a hydrogen atom or R represents a hydrogen atom when R′ represents a fluorine atom.14. The ...

AZEOTROPIC OR AZEOTROPE-LIKE COMPOSITIONS OF 3,3,3-TRIFLUOROPROPYNE AND WATER

Azeotropic or azeotrope-like compositions of 3,3,3-trifluoropropyne and water, such as from about 1 to about 50 wt. % water and from about 50 to about 99 wt. % 3,3,3-trifluoropropyne, based on the combined weight of the water and 3,3,3-trifluoropropyne, and methods of producing essentially water free 3,3,3-trifluoropropyne. 1. An azeotropic or azeotrope-like composition consisting essentially of 3 ,3 ,3-trifluoropropyne and water.2. The composition of claim 1 , wherein the composition consists of water and 3 claim 1 ,3 claim 1 ,3-trifluoropropyne.3. The composition of claim 1 , wherein the composition comprises from about 1 to about 50 wt. % water and from about 50 to about 99 wt. % 3 claim 1 ,3 claim 1 ,3-trifluoropropyne claim 1 , based on the combined weight of the water and 3 claim 1 ,3 claim 1 ,3-trifluoropropyne.4. The composition of claim 3 , wherein the composition comprises from about 0.1 to about 50 wt. % water and from about 50 to about 99.9 wt. % 3 claim 3 ,3 claim 3 ,3-trifluoropropyne claim 3 , based on the combined weight of the water and 3 claim 3 ,3 claim 3 ,3-trifluoropropyne.5. The composition of claim 1 , wherein the composition has a boiling point of about −47° C.±0.5° C. at a pressure of about 14.4 psia±2 psia.6. The composition of claim 5 , wherein the composition has a boiling point of about −46.8° C. at a pressure of about 14.4 psia.7. An azeotropic or azeotrope-like composition consisting essentially of from about 1 to about 50 wt. % water and from about 50 to about 99 wt. % 3 claim 5 ,3 claim 5 ,3-trifluoropropyne claim 5 , based on the combined weight of the water and 3 claim 5 ,3 claim 5 ,3-trifluoropropyne claim 5 , which composition has a boiling point of about −47° C.±0.5° C. at a pressure of about 14.4 psia±2 psia.8. The composition of claim 7 , wherein the composition consists of water and 3 claim 7 ,3 claim 7 ,3-trifluoropropyne.9. A method of forming an azeotropic or azeotrope-like composition comprising forming a blend consisting ...

PRODUCTION METHOD FOR COMPOSITION CONTAINING 1,2-DICHLORO-3,3,3-TRIFLUOROPROPENE (HCFO-1223xd) AND/OR 1,1,2-TRICHLORO-3,3,3-TRIFLUOROPROPENE (CFO-1213xa)

The present invention provides a method that produces a composition containing 1223xd and/or 1213xa by a gas-phase reaction, and that achieves production efficiency higher than known methods. The present invention provides a method for producing a composition containing at least one fluorine-containing olefin selected from 1,2-dichloro-3,3,3-trifluoropropene (HCFO-1223xd) and 1,1,2-trichloro-3,3,3-trifluoropropene (CFO-1213xa), the method comprising subjecting at least one starting compound selected from a chlorine-containing alkane represented by Formula (1-1): CF 3 CHXCHX 2 , wherein each X is independently H or Cl, with the proviso that at least one X represents Cl, and a chlorine-containing alkene represented by Formula (1-2): CF 3 CX═CX 2 , wherein each X is independently H or Cl, with the proviso that at least one X represents Cl, to a gas-phase oxychlorination reaction in a temperature range of 380° C. or lower in the presence of oxidative gas and hydrogen chloride gas.

Dry Etching Gas and Dry Etching Method

What is disclosed is a dry etching gas containing 1,3,3,3-tetrafluoropropene, wherein 1,3,3,3-tetrafluoropropene has purity of 99.5 mass % or more, and a total of concentration of each mixed metal component of Fe, Ni, Cr, Al, and Mo is 500 mass ppb or less. Furthermore, regarding to the dry etching gas, it is preferable that a content of nitrogen is 0.5 volume % or less, and that a content of water is 0.05 mass % or less. In a dry etching with a plasma gas obtained by making a dry etching gas into plasma, the dry etching gas of the present invention can improve etching selectivity of silicon-based material with respect to a mask. 1. A dry etching gas containing 1 ,3 ,3 ,3-tetrafluoropropene , wherein 1 ,3 ,3 ,3-tetrafluoropropene has purity of 99.5 mass % or more , and a total of concentrations of each metal component of Fe , Ni , Cr , Al , and Mo in 1 ,3 ,3 ,3-tetrafluoropropene is 500 mass ppb or less.2. The dry etching gas as claimed in claim 1 , wherein a content of nitrogen is 0.5 volume % or less.3. The dry etching gas as claimed in claim 1 , a content of water is 0.05 mass % or less.4. The dry etching gas as claimed in claim 1 , wherein the total of concentrations of each metal component is 300 mass ppb or less.5. The dry etching gas as claimed in claim 1 , wherein each metal component is derived from a metal catalyst used in a synthesis reaction of 1 claim 1 ,3 claim 1 ,3 claim 1 ,3-tetrafluoropropene or metal facilities used in manufacturing.6. The dry etching gas as claimed in claim 1 , wherein the dry etching gas further contains an additive gas and an inert gas.7. The dry etching gas as claimed in claim 6 , wherein the additive gas is an oxidized gas.8. The dry etching gas as claimed in claim 1 , wherein the dry etching gas selectively etches at least one silicon-based material selected from a group consisting of silicon oxide claim 1 , silicon nitride claim 1 , and silicon oxynitride with respect to a mask.9. A vessel with a valve charged with the dry ...

PROCESS FOR PRODUCING C3 CHLORINATED ALKANE AND ALKENE COMPOUNDS

A process for producing a reaction mixture comprising a plurality of Cchlorinated alkane isomers comprising chlorinating a Cchlorinated alkane starting material in a chlorination zone to produce the plurality of Cchlorinated alkane isomers, the plurality of Cchlorinated alkane isomers each having at least one more chlorine atom than the Cchlorinated alkane starting material, wherein the concentration of the Cchlorinated alkane starting material is controlled such that conversion of the Cchlorinated alkane starting material to the plurality of Cchlorinated alkane isomers, represented by the molar ratio of the Cchlorinated alkane starting material:Cchlorinated alkane isomers in the reaction mixture present in the chlorination zone, does not exceed about 40:60. 1. A process for producing a Cchlorinated alkene comprising providing a mixture comprising a plurality of Cchlorinated alkane isomers , the boiling point of at least two of the plurality of Cchlorinated alkane isomers differing by ≤15° C. , comprising subjecting the mixture to a selective dehydrochlorination step in a dehydrochlorination zone in which one of the at least two Cchlorinated alkane isomers , a first Cchlorinated alkane isomer , is selectively converted to a respective first Cchlorinated alkene without the substantial dehydrochlorination of any of the other of the plurality of Cchlorinated alkane isomers{'sub': '3', 'wherein some or all surfaces of the dehydrochlorination zone in which the process is carried out, which a stream rich in or consisting of the Cchlorinated alkene will contact during dehydrochlorination, have an iron content of about 20% or less and/or are formed from non-metallic materials and/or plastic materials.'}230.-. (canceled)31. The process of claim 1 , wherein said non-metallic materials are selected from enamel claim 1 , glass claim 1 , impregnated graphite claim 1 , and silicon carbide.32. The process of claim 31 , wherein said impregnated graphite is graphite impregnated with ...

DIVIDING WALL DISTILLATION COLUMN AND METHOD FOR REFINING VINYLIDENE DICHLORIDE BY USING SAME

The present disclosure relates to a dividing wall distillation column and a method for refining vinylidene dichloride by using the same and, more specifically, to a dividing wall distillation column capable of refining, in a high purity, vinylidene dichloride from a crude product; and a method for refining vinylidene dichloride by using the same. According to the dividing wall distillation column of the present disclosure and the method for refining vinylidene dichloride by using the same, vinylidene dichloride can be refined, in a high purity, from a crude product having a small amount of vinylidene dichloride and a large quantity of high boiling components, and energy consumption can be reduced more than that in conventional cases. 1. A method for refining vinylidene dichloride comprising the step of fractionally distilling a crude product containing vinylidene dichloride using the dividing wall distillation column for the fractional distillation of a crude product containing vinylidene dichloride (1 ,1-dichloroethylene) ,wherein the dividing wall distillation column comprising: a main column having a dividing wall, a condenser, and a reboiler,wherein the main column includes, based on a vertical cross section, a feed zone and an outflow zone partitioned on one side and the other side, with the dividing wall being interposed therebetween, a column top zone adjacent to an upper end of the dividing wall and a column bottom zone adjacent to a lower end,wherein the dividing wall divides a liquid stream into a first stream falling through the feed zone and a second stream falling through the outflow zone, when a liquid stream condensed in the column top zone falls to the column bottom zone, and {'br': None, 'i': N', 'N', 'N', 'X, '1/(1+2)=\u2003\u2003(1)'}, 'wherein at least a part of the dividing wall is positioned to be deflected in the direction of the feed zone so that a quantitative ratio of the first stream to the second stream satisfies the following Equation ...

Method for producing difluoroethylene

Provided is a method for efficiently obtaining HFC-1132(E) and/or HFO-1132(Z). The method includes supplying a composition containing HFO-1132(E) and/or HFO-1132(Z) to a reactor to perform isomerization between HFO-1132(E) and HFO-1132(Z) by irradiating the composition with light.

Method for manufacturing 1-halo-2-fluoroethylene

A method for efficiently obtaining trans-1-halo-2-fluoroethylene (E-isomer) and/or cis-1-halo-2-fluoroethylene (Z-isomer) is provided. The method for producing trans-1-halo-2-fluoroethylene (E-isomer) and/or cis-1-halo-2-fluoroethylene (Z-isomer) includes supplying a composition containing trans-1-halo-2-fluoroethylene (E-isomer) and/or cis-1-halo-2-fluoroethylene (Z-isomer) to a reactor to perform isomerization between the trans-1-halo-2-fluoroethylene (E-isomer) and the cis-1-halo-2-fluoroethylene (Z-isomer) in a liquid phase by performing light irradiation in the presence of a photosensitizer.

INTEGRATED PROCESS FOR THE PRODUCTION OF 1-CHLORO-3,3,3-TRIFLUOROPROPENE

The present invention is directed to processes for the production of 1233zd from 240fa and HF, with or without a catalyst, at a commercial scale. The 240fa and HF are fed to a reactor operating at high pressure. The resulting product stream comprising 1233zd, HCl, HF, and other byproducts is treated to one or more purification techniques including phase separation and one or more distillations to provide purified 1233zd, which meets commercial product specifications, i.e., having a GC purity of 99.5% or greater. 14-. (canceled)5. A process for making highly purified HCFC-1233zd by the reaction of 240fa and HF at a reactor pressure of from 150 psig to 600 psig wherein the purification of the HCFC-1233zd comprises the steps of:(a) distilling the resulting product stream comprising HCFC-1233zd, HCl, HF, and other byproducts;(b) distilling the overhead product from the step (a) distillation in a second distillation column to remove the HCl;(c) phase separating the bottom stream from the second distillation in step (b) to isolate the HF; and(d) purifying the phase separation bottom layer components from step (c) to yield purified HCFC-1233zd having a purity of 99.5% or greater, as measured using gas chromatography. This application is a continuation filing from commonly owned, copending U.S. application Ser. No. 14/609,462, filed Jan. 30, 2015, now U.S. Pat. No. ______. The '462 Application is a continuation of application Ser. No. 13/471,565, filed May 15, 2012, now U.S. Pat. No. 9,000,240. The '565 Application claims domestic priority to commonly owned U.S. Provisional Patent Application Ser. No. 61/487,735, filed May 19, 2011. These applications are hereby incorporated herein by reference in their entirety.This invention related to the production of 1-chloro-3,3,3-trifluoropropene (1233zd) on a commercial scale from the reaction of 1,1,1,3,3-pentachloropropane (240fa) and HF. The compound 1233zd is a low global warming compound that has applications as a replacement ...

METHOD FOR MAKING 1,1,3,3-TETRACHLOROPROPENE

A process for the manufacture of 1,1,3,3-tetrachloropropene, the process comprising dehydrochlorinating 1,1,1,3,3-pentachloropropane. 1. A process for the manufacture of 1 ,1 ,3 ,3-tetrachloropropene , the process comprising:dehydrochlorinating 1,1,1,3,3-pentachloropropane.2. The process of claim 1 , where said step of dehydrochlorinating 1 claim 1 ,1 claim 1 ,1 claim 1 ,3 claim 1 ,3-pentachloropropane takes place in the presence of a Lewis acid.3. The process of claim 1 , where the Lewis acid is ferric chloride.4. The process of claim 1 , where said step of dehydrochlorinating 1 claim 1 ,1 claim 1 ,1 claim 1 ,3 claim 1 ,3-pentachloropropane takes place in the presence of an oxidizing agent.5. The process of claim 1 , where the oxidizing agent is chlorine.6. The process of claim 1 , where said step of dehydrochlorinating takes place in the presence of from about 30 to about 10 claim 1 ,000 ppm ferric chloride.7. The process of claim 1 , where said step of dehydrochlorinating takes place in the presence of from about 100 ppm to about 3 wt % chlorine.8. The process of claim 1 , where said step of dehydrochlorinating includes reactive distillation.9. The process of claim 1 , where said step of dehydrochlorinating takes place at a pressure of from about 0.05 atmospheres to about 0.5 atmospheres.10. The process of claim 1 , where said step of dehydrochlorinating takes place at a temperature of from about 60° C. to about 160° C.11. The process of claim 1 , where said step of dehydrochlorinating includes reactively distilling a crude 1 claim 1 ,1 claim 1 ,1 claim 1 ,3 claim 1 ,3-pentachloropropane stream.12. The process of claim 7 , where the 1 claim 7 ,1 claim 7 ,1 claim 7 ,3 claim 7 ,3-pentachloropropane stream includes 1 claim 7 ,1 claim 7 ,1 claim 7 ,3 claim 7 ,3-pentachloropropane claim 7 , carbon tetrachloride claim 7 , vinyl chloride claim 7 , iron claim 7 , and at least one of amines claim 7 , nitriles claim 7 , amides claim 7 , and phosphates.13. The process of ...

PROCESS FOR DRYING HCFO-1233ZD

The present disclosure provides separation processes that use azeotropic or azeotropic-like compositions of 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd) that allow for improved recovery rates of 1-chloro-3,3,3-trifluoropropene during or after manufacturing processes. Such recovery or separation processes can utilize the unique properties of azeotropic or azeotropic-like composition with various combinations of separation techniques (e.g., distillation and decanting) that yield highly pure compositions of 1-chloro-3,3,3-trifluoropropene and simultaneously offer high yields of 1-chloro-3,3,3-trifluoropropene. Such highly pure compositions of 1-chloro-3,3,3-trifluoropropene may find useful applications in polymer technology as monomers or comonomers. 1. A method for recovering 1-chloro-3 ,3 ,3-trifluoropropene comprising ,forming an azeotropic or azeotrope-like composition comprising 1-chloro-3,3,3-trifluoropropene and water;conveying the formed azeotropic or azeotrope-like composition into a separator; andrecovering an organic layer comprising 1-chloro-3,3,3-trifluoropropene.2. The method of claim 1 , wherein the composition comprises from about 0.05 wt. % to about 30 wt. % water and from about 70 wt. % to about 99.95 wt. % 1-chloro-3 claim 1 ,3 claim 1 ,3-trifluoropropene claim 1 , based on the combined weight of water and 1-chloro-3 claim 1 ,3 claim 1 ,3-trifluoropropene.3. The method of claim 1 , wherein the composition has a boiling point of about 17.4° C.±1° C. at a pressure of about 14.7 psia.4. The method of claim 1 , further comprising decanting off a water layer.5. The method of claim 1 , further comprising returning the organic layer to a distillation column.6. The method of claim 5 , further comprising separating water in the organic layer from 1-chloro-3 claim 5 ,3 claim 5 ,3-trifluoropropene with distillation.7. The method of claim 1 , wherein the azeotropic or azeotrope-like composition consists essentially of 1-chloro-3 claim 1 ,3 claim 1 ,3- ...

HIGH-PURITY 1,1,1,2,3,3-HEXAFLUOROPROPANE, METHOD FOR PRODUCING SAME AND USE THEREOF

The present invention relates to a method for producing high-purity 1,1,1,2,3,3-hexafluoropropane and a composition containing mainly 1,1,1,2,3,3-hexafluoropropane, suitable for use as a cleaning agent in the semiconductor industry. 1. A composition comprising at least 99.4% by weight of 1 ,1 ,1 ,2 ,3 ,3-Hexafluoropropane (HFC-236ea) , and one or more compounds selected from the group consisting of 2 ,3 ,3 ,3-tetrafluoropropene (HFO-1234yf) , cis/trans-1 ,3 ,3 ,3-tetrafluoropropene (HFO-1234ze(Z/E)) , 3 ,3 ,3-trifluoropropene (HFO-1243zf) , 1 ,1 ,1 ,2 ,3 ,3 ,3-peptafluoropropane (HFC-227ea) , 1 ,1 ,1 ,3 ,3 ,3-hexafluoropropane (HFC-236fa) , 1 ,1 ,1 ,3 ,3-pentafluoropropane (HFC-245fa) , 1 ,1 ,1 ,2 ,3-pentafluoropropane (HFC-245eb) , 1 ,1 ,1 ,2-tetrafluoropropane (HFC-254eb) , 1 ,1 ,1 ,3-tetrafluoropropane (HFC-254fb) , 1 ,1 ,1-trifluoropropane (HFC-263fb) , 1 ,1 ,2-trifluoroethane (HFC-143) , hexafluorocyclopropane (cyclo-CF) , octafluorocyclobutane (cyclo-C4F8) , cis/trans-1 ,1 ,1 ,4 ,4 ,4-hexafluoro-2-butene (HFO-356mff(Z/E)) , hydrogen , nitrogen , oxygen , CO2 , and CO , wherein the one or more compounds is present in the composition in an amount of at most 0.6% by weight.2. The composition of claim 1 , comprising at least 99.7% by weight of 1 claim 1 ,1 claim 1 ,1 claim 1 ,2 claim 1 ,3 claim 1 ,3-Hexafluoropropane (HFC-236ea) and wherein the one or more compounds are selected from the group consisting of 1 claim 1 ,1 claim 1 ,1 claim 1 ,2 claim 1 ,3 claim 1 ,3 claim 1 ,3-peptafluoropropane (HFC-227ea) claim 1 , 1 claim 1 ,1 claim 1 ,1 claim 1 ,3 claim 1 ,3 claim 1 ,3-hexafluoropropane (HFC-236fa) claim 1 , 1 claim 1 ,1 claim 1 ,1 claim 1 ,3 claim 1 ,3-pentafluoropropane (HFC-245fa) claim 1 , 1 claim 1 ,1 claim 1 ,1 claim 1 ,2 claim 1 ,3-pentafluoropropane (HFC-245eb) claim 1 , 1 claim 1 ,1 claim 1 ,1 claim 1 ,2-tetrafluoropropane (HFC-254eb) claim 1 , 1 claim 1 ,1 claim 1 ,1-trifluoropropane (HFC-263fb) claim 1 , and cis/trans-1 claim 1 ,1 claim 1 ,1 claim 1 ,4 ...

METHOD FOR PREPARING 2,3,3,3-TETRAFLUOROPROPENE

A method for preparing 2,3,3,3-tetrafluoropropene, including: a) introducing hexafluoropropylene and hydrogen to a first reactor for reaction in the presence of a catalyst to obtain a first mixture; b) washing and drying the first mixture, and introducing the treated first mixture to a first distillation column to obtain 1,1,1,2,3,3-hexafluoropropane, 1,1,1,2,3-pentafluoropropene, and hexafluoropropylene; recycling the 1,1,1,2,3,3-hexafluoropropane to the first reactor, and introducing the 1,1,1,2,3-pentafluoropropene and the hexafluoropropylene to a second distillation column to yield hexafluoropropylene and 1,1,1,2,3-pentafluoropropene; and recycling the hexafluoropropylene to the first reactor; c) introducing the 1,1,1,2,3-pentafluoropropene and hydrogen to a second reactor in the presence of a catalyst to obtain a second mixture; and d) washing and drying the second mixture, and introducing the second mixture to a third distillation column to yield 1,1,1,2,3-pentafluoropropane; and recycling the 1,1,1,2,3-pentafluoropropane to the second reactor to yield 2,3,3,3-tetrafluoropropene. 1. A method for preparing 2 ,3 ,3 ,3-tetrafluoropropene , comprising:{'sup': '−1', 'a) introducing hexafluoropropylene and hydrogen to a first reactor to allow hexafluoropropylene to react with hydrogen in the presence of a catalyst to obtain a first mixture comprising 1,1,1,2,3-pentafluoropropene, 1,1,1,2,3,3-hexafluoropropane, hydrogen fluoride, and hexafluoropropylene, in which a molar ratio of hexafluoropropylene to hydrogen is between 1:0.95 and 1:0.99, a space velocity is between 200 and 1000 h, and a reaction temperature is between 50 and 400° C.;'}b) washing and drying the first mixture obtained from a), and introducing the treated first mixture to a first distillation column to obtain 1,1,1,2,3,3-hexafluoropropane in a bottom of the first distillation column and 1,1,1,2,3-pentafluoropropene and hexafluoropropylene at a top of the first distillation column; recycling the 1,1,1 ...

Method for synthesising trifluoroethylene from chlorotrifluoroethylene

The present invention relates to the preparation of trifluoroethylene (VF 3 or TrFE) by hydrogenolysis of chlorotrifluoroethylene (CTFE) in the gaseous phase over a group VIII metal catalyst deposited on a support. This method can be used to obtain VF 3 in an economical manner in conditions which minimize the risk of explosion of this molecule. Using a catalyst containing a group VIII metal and, more specifically, containing Pd deposited on a support and a specific series of steps of separation and purification makes it possible to obtain excellent CTFE conversion rates and high selectivity in VF 3 at atmospheric pressure and at low temperatures.

METHOD FOR PREPARING 2,3,3,3-TETRAFLUOROPROPENE

A method for preparing 2,3,3,3-tetrafluoropropene, including: a) heating and vaporizing hydrogen fluoride and 1,1,2,3-tetrachloropropene (TCP), and introducing hydrogen fluoride and TCP to a first reactor for reaction in the presence of an A-type catalyst to yield a first product mixture including 2,3-dichloro-3,3-difluoropropene (“HCFO-1232xf”), where the mole ratio between hydrogen fluoride and TCP is between 5:1 and 60:1, the reaction temperature is between 200 and 500° C., and the space velocity is between 200 and 2000 h; b) preheating the first product mixture including HCFO-1232xf, introducing the first product mixture including HCFO-1232xf to a second reactor for reaction in the presence of a B-type catalyst to yield a second product mixture including HFO-1234yf, where the temperature of the preheated first product mixture including HCFO-1232xf is higher than the reaction temperature of the first reactor and lower than the reaction temperature of the second reactor. 1. A method for preparing 2 ,3 ,3 ,3-tetrafluoropropene , comprising:{'sup': '−1', 'a) heating and vaporizing hydrogen fluoride and 1,1,2,3-tetrachloropropene, and introducing hydrogen fluoride and TCP to a first reactor for reaction in the presence of an A-type catalyst, whereby yielding a first product mixture comprising 2,3-dichloro-3,3-difluoropropene, wherein a mole ratio between hydrogen fluoride and 1,1,2,3-tetrachloropropene is between 5:1 and 60:1, a reaction temperature is between 200 and 500° C., and a space velocity is between 200 and 2000 h;'}b) preheating the first product mixture comprising 2,3-dichloro-3,3-difluoropropene, introducing the first product mixture comprising 2,3-dichloro-3,3-difluoropropene to a second reactor for reaction in the presence of a B-type catalyst, whereby yielding a second product mixture comprising 2,3,3,3-tetrafluoropropene, wherein the reaction temperature of the second reactor is higher than the reaction temperature of the first reactor by between 30 ...

E-1-CHLORO-3,3,3-TRIFLUOROPROPENE PRODUCTION PROCESS FROM 1,1,3,3-TETRACHLOROPROPENE

A production process for the production of E-1-chloro-3,3,3-trifluoropropene, the process including at least one stage during which 1,3,3,3-tetrachloropropene reacts with anhydrous hydrofluoric acid in the liquid phase, in the absence of a catalyst, with an HF/1,1,3,3- tetrachloropropene molar ratio between 3 and 20 inclusive, at a temperature between 50° C. and 150° C. inclusive and an absolute pressure of between 1 and 20 bar inclusive. 1. A production process for the production of E-1-chloro-3 ,3 ,3-trifluoropropene , the process comprising at least one stage during which 1 ,3 ,3 ,3- tetrachloropropene reacts with anhydrous hydrofluoric acid in the liquid phase , in the absence of a catalyst , with an HF/1 ,1 ,3 ,3- tetrachloropropene molar ratio between 3 and 20 inclusive , at a temperature between 50° C. and 150° C. inclusive and an absolute pressure of between 1 and 20 bar inclusive.2. A production process for the production of E-1-chloro-3 ,3 ,3-trifluoropropene , the process comprising:(i) at least one stage during which 1,1,3,3-tetrachloropropene reacts with anhydrous hydrofluoric acid in the liquid phase in a reactor equipped with a drain and an effluent outlet;(ii) at least one stage for treating the effluent from the reactor in order to provide a flow A that comprises E-1-chloro-3,3,3-trifluoropropene, HCl, HF and Z-1-chloro-3,3,3-trifluoropropene and a flow B that comprises at least 50% HF in weight;(iii) at least one stage for recovering the hydrochloric acid from flow A, the hydrochloric acid being in flow C and flow D that includes E-1-chloro-3,3,3-trifluoropropene, HCl, HF and Z-1-chloro-3,3,3-trifluoropropene;(iv) at least one stage for purifying flow D from stage (iii) in order to purify the E-1233zd to a level higher than or equal to 98% in weight.3. The production process of claim 2 , the process comprises a drainage stage claim 2 , wherein drainage collected in the reactor drain is claim 2 , after treatment claim 2 , recycled back to the ...

PROCESS FOR PURIFYING (HYDRO) FLUOROPROPENES CONTAMINATED WITH HALOGENATED ETHANE

A process for treating a composition comprising one or more desired (hydro)fluoroolefins and one or more undesired halogenated ethanes, halogenated methanes or mixtures thereof so as to reduce the concentration of at least one undesired halogenated ethane or halogenated methane, the process comprising contacting the composition with an adsorbent comprising pores having openings which have a size across their largest dimension of about 6 A or less. 1. A process for treating a composition comprising one or more desired (hydro)fluoropropenes and one or more undesired halogenated ethanes , so as to reduce the concentration of at least one undesired halogenated ethane the process comprising contacting the composition with an adsorbent comprising pores having openings which have a size across their largest dimension of about 6 Å or less.2. A process according to wherein the desired (hydro)fluoropropene comprises at least 10 wt % claim 1 , for example at least 20 wt % claim 1 , at least 30 wt % claim 1 , at least 40 wt % claim 1 , at least 50 wt % claim 1 , at least 60 wt % claim 1 , at least 70 wt % claim 1 , at least 80 wt % or at least 90 wt % of the composition to be treated.3. A process according to or wherein the adsorbent comprises having openings which have a size across their largest dimension of from about 4 Å to about 6 Å.4. A process according to any of to wherein the adsorbent comprises pores having openings which have a size across their largest dimension of about 5 Å.5. A process according to any of the preceding claims wherein the adsorbent is a molecular sieve.6. A process according to any of the preceding claims wherein the adsorbent comprises a zeolite.7. A process according to wherein the tetrafluoropropene is 2 claim 1 ,3 claim 1 ,3 claim 1 ,3-tetrafluoropropene (1234yf).8. A process according to any of the preceding claims wherein the at least one undesired halogenated ethane is a fluorinated ethane.9. A process according to wherein the fluorinated ...

Method for producing and purifying 2,3,3,3-tetrafluoro-1-propene

The invention relates to a method for producing and purifying 2,3,3,3-tetrafluoro-1-propene using a first composition comprising 2,3,3,3-tetrafluoro-1-propene, 3,3,3-trifluoropropene (1243zf), and trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E), said method comprising the steps of: (a) bringing said first composition into contact with at least one organic extraction agent in order to form a second composition; (b) extractive distilaation of said second composition in order to form (i) a third composition comprising said organic extraction agent, 3,3,3-trifluoropropene (1243zf), and trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E), and (ii) a stream comprising the 2,3,3,3-tetrafluoro-1-propene; and (c) recovery and separation of said third composition in order to form a stream comprising said organic extraction agent and a stream comprising 3,3,3-trifluoropropene (1243zf) and trans-1,3,3,3-tetrafluoro-1-propene (1234ze-E). 1. A composition comprising 2 ,3 ,3 ,3-tetrafluoropropene , 3 ,3 ,3-trifluoropropene (1243zf) , trans-1 ,3 ,3 ,3-tetrafluoro-1-propene (1234ze-E) and an organic extracting agent having:{'sub': 1,2', '1,2', '1,s', '2,s', '1,s', '2s, 'a separation factor Sof greater than or equal to 1.40, said separation factor being calculated by the formula S=(γ*P1)/(γ*P2) wherein γrepresents the activity coefficient of 2,3,3,3-tetrafluoropropene in said organic extracting agent at infinite dilution, P1 represents the saturating vapor pressure of 2,3,3,3-tetrafluoropropene, γrepresents the activity coefficient of 3,3,3-trifluoropropene (1243zf) in said organic extracting agent at infinite dilution, P2 represents the saturating vapor pressure of 3,3,3-trifluoropropene (1243zf) and'}{'sub': 1,2', '1,s', '2,s', '1,s', '2,s, 'a separation factor S1,2 of greater than or equal to 1.40, said separation factor being calculated by the formula S=(γ*P1)/(γ*P2) in which γrepresents the activity coefficient of 2,3,3,3-tetrafluoropropene in said organic extracting agent at infinite ...

PROCESSES FOR PRODUCING VERY HIGH PURITY 1,1,1,2,3-PENTACHLOROPROPANE

Disclosed is a process for preparing a highly pure 1,1,1,2,3-pentachloropropane product, comprising 1. A process for preparing a highly pure 1 ,1 ,1 ,2 ,3-pentachloropropane product comprising:1-a) providing a reaction mixture comprising ethylene, carbon tetrachloride and a catalyst in a principal alkylation zone to produce 1,1,1,3-tetrachloropropane in the reaction mixture, and1-b) treating the reaction mixture obtained in step 1-a) to obtain a 1,1,1,3-tetrachloropropane feedstock;2-a) contacting the 1,1,1,3-tetrachloropropane feedstock with a catalyst in a dehydrochlorination zone to produce a reaction mixture comprising 1,1,1,3-tetrachloropropane and 1,1,3-trichloropropene, and2-b) treating the reaction mixture obtained in step 2-a) to obtain a 1,1,3-trichloropropene feedstock;3-a) contacting the 1,1,3-trichloropropene feedstock with chlorine in a reaction zone to produce a reaction mixture containing 1,1,1,2,3-pentachloropropane and 1,1,3-trichloropropene, the reaction zone being different from the dehydrochlorination zone, and3-b) treating the reaction mixture obtained in step 3-a) to obtain the highly pure 1,1,1,2,3-pentachloropropane product.2. The process of claim 1 , wherein treatment steps 1-b) claim 1 , 2-b) and/or 3-b) comprise a distillation step.3. The process of claim 1 , wherein treatment steps 1-b) claim 1 , 2-b) and/or 3-b) comprise contacting compositions comprising 1 claim 1 ,1 claim 1 ,1 claim 1 ,3-tetrachloropropane (in the case of step 1-b) claim 1 , 1 claim 1 ,1 claim 1 ,3-trichloropropene (in the case of step 2-b) claim 1 , and/or 1 claim 1 ,1 claim 1 ,1 claim 1 ,2 claim 1 ,3-pentachloropropane (in the case of step 3-b) with an aqueous medium.4. The process of claim 1 , wherein the feedstock produced in step 1-b) and used in step 2-a) comprises:about 99.0% or more, about 99.5% or more, about 99.7% or more, about 99.8% or more or about 99.9% or more of 1,1,1,3-tetrachloropropane,less than about 2000 ppm, less than about 1000 ppm, less than ...

Process for producing highly pure chlorinated alkane

Disclosed is a process for producing highly pure chlorinated alkane in which a chlorinated alkene is contacted with chlorine in a reaction zone to produce a reaction mixture containing the chlorinated alkane and the chlorinated alkene, and extracting a portion of the reaction mixture from the reaction zone, wherein the molar ratio of chlorinated alkane:chlorinated alkene in the reaction mixture extracted from the reaction zone does not exceed 95:5.

PROCESS FOR PREPARING A CHLORINATED ALKENE

Disclosed is a process for preparing a chlorinated alkene, comprising contacting a chlorinated alkane with a catalyst in a dehydrochlorination zone to produce a liquid reaction mixture comprising the chlorinated alkane and the chlorinated alkene, and extracting chlorinated alkene from the reaction mixture, wherein the concentration of the chlorinated alkene in the reaction mixture present in the dehydrochlorination zone is controlled such that the molar ratio of chlorinated alkene:chlorinated alkane is from 1:99 to 50:50. 1. A process for preparing a chlorinated alkene comprising contacting a chlorinated alkane with a catalyst in a dehydrochlorination zone to produce a liquid reaction mixture comprising the chlorinated alkane and the chlorinated alkene , and extracting chlorinated alkene from the reaction mixture , wherein the concentration of the chlorinated alkene in the reaction mixture present in the dehydrochlorination zone is controlled such that the molar ratio of chlorinated alkene:chlorinated alkane is from 1:99 to 50:50.2. The process of claim 1 , wherein the molar ratio of chlorinated alkene:chlorinated alkane in the reaction mixture is from 5:95 to 50:50.3. The process of claim 1 , wherein the molar ratio of chlorinated alkene:chlorinated alkane in the reaction mixture is from 5:95 to 30:70.4. The process of claim 1 , wherein the chlorinated alkane contacted with the catalyst in the dehydrochlorination zone has a purity of about 98.5% or higher.5. The process of claim 1 , wherein the chlorinated alkene is extracted from the reaction mixture on a continuous basis.6. The process of claim 1 , wherein extraction of the chlorinated alkene from the reaction mixture is achieved by distillation.7. The process of claim 1 , wherein the chlorinated alkene is condensed from a gaseous mixture comprising the chlorinated alkene generated in the dehydrochlorination zone.8. The process of claim 7 , wherein the distillation is performed in distillation apparatus in fluid ...

Process for Purifying (Hydro)Fluoroalkenes

The invention relates to a process for removing one or more undesired (hydro)halocarbon compounds from a (hydro)fluoroalkene, the process comprising contacting a composition comprising the (hydro)fluoroalkene and one or more undesired (hydro)halocarbon compounds with an aluminium-containing absorbent, activated carbon, or a mixture thereof.

METHOD FOR PURIFYING CHLORINATED HYDROCARBON

The present invention provides a method for purifying chlorinated hydrocarbon(s), comprising cooling a mixture containing hydrogen fluoride and at least one chlorinated hydrocarbon selected from the group consisting of 2-chloro-3,3,3-trifluoropropene, 2,3-dichloro-3,3-difluoropropene, 1,2,3-trichloro-1,1-difluoropropane, and 1,1,1,2,3-pentachloropropane to cause liquid-liquid separation of the mixture into an upper liquid phase having a high hydrogen fluoride concentration and a lower liquid phase having a high chlorinated hydrocarbon concentration, and a method for purifying a chlorinated hydrocarbon, comprising subjecting the lower liquid phase obtained by the liquid-liquid separation to a distillation operation. According to the present invention, a chlorinated hydrocarbon can be purified by separating and removing hydrogen fluoride from a chlorinated hydrocarbon-hydrogen fluoride mixture under simple and economically advantageous conditions. 1. A method for purifying one or more chlorinated hydrocarbons , comprising cooling a mixture containing hydrogen fluoride and at least one chlorinated hydrocarbon selected from the group consisting of 2-chloro-3 ,3 ,3-trifluoropropene , 2 ,3-dichloro-3 ,3-difluoropropene , 1 ,2 ,3-trichloro-1 ,1-difluoropropane , and 1 ,1 ,1 ,2 ,3-pentachloropropane to cause liquid-liquid separation of the mixture into an upper liquid phase having a high hydrogen fluoride concentration and a lower liquid phase having a high chlorinated hydrocarbon concentration.2. The method according to claim 1 , wherein the mixture containing the at least one chlorinated hydrocarbon and hydrogen fluoride is a product obtained when 2-chloro-3 claim 1 ,3 claim 1 ,3-trifluoropropene is produced by fluorinating 1 claim 1 ,1 claim 1 ,1 claim 1 ,2 claim 1 ,3-pentachloropropane with hydrogen fluoride.3. The method according to claim 1 , wherein the chlorinated hydrocarbon to be treated is 2-chloro-3 claim 1 ,3 claim 1 ,3-trifluoropropene.4. The method according ...

AZEOTROPE OR AZEOTROPIC COMPOSITION CONTAINING PENTAFLUOROPROPANE AND WATER, AND METHOD FOR PRODUCING PENTAFLUOROPROPANE

An object of the present invention is to provide a method that can efficiently remove water contained in pentafluoropropane. Provided as a solution is a method comprising distilling a composition comprising pentafluoropropane and water to thereby extract pentafluoropropane with a water content higher than that of the composition as a first stream, and pentafluoropropane with a water content lower than that of the composition as a second stream. 1. (canceled)2. An azeotropic or azeotrope-like composition comprising 1 ,1 ,1 ,2 ,3-pentafluoropropane (HFC-245eb) and water.3. (canceled)4. The azeotropic or azeotrope-like composition according to claim 2 , wherein HFC-245eb and water are contained in an amount of 90 to 100 mass % relative to the entire composition.5. A method for producing a composition comprising pentafluoropropane with a water content lower than that of a starting composition comprising pentafluoropropane and water claim 2 , the method comprising:(1) distilling the starting composition to thereby extract a pentafluoropropane-containing composition with a water content higher than that of the starting composition as a first stream, and a pentafluoropropane-containing composition with a water content lower than that of the starting composition as a second stream.6. The method according to claim 5 , wherein the distillation is performed within a pressure range of atmospheric pressure to 2 MPa.7. The production method according to claim 5 , further comprising:(2) cooling the composition of the first stream obtained in step (1) to induce liquid-liquid separation to form a phase A containing a larger amount of water and a phase B containing a larger amount of pentafluoropropane.8. The method according to claim 7 , further comprising:(3) subjecting the phase B separated in step (2) to step (1) as a composition comprising pentafluoropropane and water.9. The method according to claim 5 , wherein the pentafluoropropane is at least one pentafluoropropane selected ...

METHODS OF MAKING CHLORINATED HYDROCARBONS

Methods for the manufacture of 1,1,1,2,3-pentachloropropane from 1,1,1,3-tetrachloropropane and chlorine are disclosed. Improved methods are provided for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,2,3-pentachloropropane. Methods are also disclosed for the manufacture of 1,1,2,3-tetrachloropropene from 1,1,1,3-tetrachloropropane and chlorine and for the manufacture of 1,1,2,3-tetrachloropropene from carbon tetrachloride, ethylene, and chlorine. 1. A process for producing 1 ,1 ,1 ,2 ,3-pentachloropropane , the process comprising:i. combining 1,1,1,3-tetrachloropropane with ferric chloride to thereby dehydrochlorinate the 1,1,1,3 tetrachloropropane to one or more trichloropropenes; andii. reacting the one or more trichloropropenes with chlorine in the presence of ferric chloride to thereby produce 1,1,1,2,3-pentachloropropane.2. The process of claim 1 , where said step of combining 1 claim 1 ,1 claim 1 ,1 claim 1 ,3-tetrachloropropane and ferric chloride further includes combining carbon tetrachloride.3. The process of claim 2 , where said step of reacting the trichloropropenes with chlorine takes place in the presence of carbon tetrachloride.4. A process for producing 1 claim 2 ,1 claim 2 ,2 claim 2 ,3-tetrachloropropene claim 2 , the process comprising:i. combining 1,1,1,3-tetrachloropropane with ferric chloride to thereby dehydrochlorinate the 1,1,1,3 tetrachloropropane to one or more trichloropropenes; andii. reacting the one or more trichloropropenes with chlorine in the presence of ferric chloride to thereby produce 1,1,1,2,3-pentachloropropane;iii. optionally combining the 1,1,1,2,3-pentachloropropane with ferric chloride to form a mixture of 1,1,1,2,3-pentachloropropane and ferric chloride; andiv. heating the mixture of 1,1,1,2,3-pentachloropropane and ferric chloride to produce 1,1,2,3-tetrachloropropene.5. The process of claim 4 , wherein said step of heating takes place at about 120° C. to about 180° C.6. The process of claim 4 , wherein the ...

PROCESSES FOR PRODUCING VERY HIGH PURITY 1,1,1,2,3- PENTACHLOROPROPANE

Disclosed is a process for preparing a highly pure 1,1,1,2,3-pentachloropropane product, comprising 1. A highly pure 1 ,1 ,1 ,2 ,3-pentachloropropane composition obtained by the process comprising:{'b': '1', 'i': 'a', '-) providing a reaction mixture comprising ethylene, carbon tetrachloride and a catalyst in a principal alkylation zone to produce 1,1,1,3-tetrachloropropane in the reaction mixture, and,'}{'b': 1', '1, 'i': b', 'a, '-) treating the reaction mixture obtained in step -) to obtain a 1,1,1,3-tetrachloropropane feedstock;'}{'b': '2', 'i': 'a', '-) contacting the 1,1,1,3-tetrachloropropane feedstock with a metallic catalyst in a dehydrochlorination zone to produce a reaction mixture comprising 1,1,1,3-tetrachloropropane and 1,1,3-trichloropropene, and'}{'b': 2', '2, 'i': b', 'a, '-) treating the reaction mixture obtained in step -) to obtain a 1,1,3-trichloropropene feedstock;'}{'b': '3', 'i': 'a', '-) contacting the 1,1,3-trichloropropene feedstock with chlorine in a reaction zone to produce a reaction mixture containing 1,1,1,2,3-pentachloropropane and 1,1,3-trichloropropene, the reaction zone being different from the dehydrochlorination zone, and'}{'b': 3', '3, 'i': b', 'a, '-) treating the reaction mixture obtained in step -) to obtain the highly pure 1,1,1,2,3-pentachloropropane product'}{'b': '1', 'claim-text': 95:5 where the principal alkylation zone is in continuous operation, or', '99:1 where the principal alkylation zone is in batchwise operation,, 'wherein, in step , the concentration of the 1,1,1,3-tetrachloropropane in the reaction mixture in the principal alkylation zone is maintained at a level such that the molar ratio of 1,1,1,3-tetrachloropropane:carbon tetrachloride in the reaction mixture does not exceedwherein said composition comprises:1,1,1,2,3-pentachloropropane in amounts of at least 99.5%, and one or more of the following:oxygenated organic compounds in amounts of less than 500 ppm,isomers of 1,1,1,2,3-pentachloropropane in ...

METHOD FOR RECOVERING AND SEPARATING UNSATURATED FLUORINATED HYDROCARBONS

A process for recovering and upgrading unsaturated fluorinated hydrocarbons, comprises: a) providing a foam M1 consisting of pores containing a composition C1 comprising at least one unsaturated fluorinated hydrocarbon; b1) optionally grinding or compressing said foam M1 to form a ground foam or a compressed foam; b2) optionally recovering at least a portion of said composition C1; c) depolymerizing or dissolving said foam M1 provided in step a) or said ground or compressed foam obtained in step b1); d) recovering at least a portion of said composition C1 and optionally mixing the latter with said at least a portion of the composition recovered in step b2) to form a stream A comprising at least one unsaturated fluorinated hydrocarbon; e) recovering and separating said stream A into a plurality of streams of which at least one stream B1 comprises said at least one unsaturated fluorinated hydrocarbon. 119-. (canceled)20. A process for recovering and upgrading unsaturated fluorinated hydrocarbons , comprising the steps of:a) providing a foam M1 consisting of pores containing a composition C1 comprising at least one unsaturated fluorinated hydrocarbon;b1) optionally grinding or compressing said foam M1 provided in step a) to form a ground foam or a compressed foam;b2) optionally recovering at least a portion of said composition C1 comprising at least one unsaturated fluorinated hydrocarbon and released during step b1);c) depolymerizing or dissolving said foam M1 provided in step a) or said ground or compressed foam obtained in step b1);d) recovering at least a portion of said composition C1 comprising at least one unsaturated fluorinated hydrocarbon and released during step c) and optionally mixing the latter with said at least a portion of the composition recovered in step b2) to form a stream A comprising at least one unsaturated fluorinated hydrocarbon; ande) recovering and separating said stream A formed in step d) into a plurality of streams of which at least one ...

Continuous low-temperature process to produce trans-1-chloro-3,3,3-trifluoropropene

Disclosed is process for the production of (E) 1-chloro-3,3,3-trifluoropropene (HCFO-1233zd(E)) by conducting a continuous reaction without the use of a catalyst. Also disclosed is an integrated system including one or more reactors for producing hydrofluoro olefins, particularly 1233zd(E). The manufacturing process includes six major unit operations: (1) a fluorination reaction of HCC-240fa (in continuous or semi-batch mode) using HF with simultaneous removal of by-product HCl and the product 1233zd(E); (2) recycle of unreacted HCC-240fa and HF together with under-fluorinated by-products back to (1); (3) separation and purification of by-product HCl; (4) separation of excess HF back to (1); (5) purification of final product, 1233zd(E); and (6) isomerization of by-product 1233zd(Z) to 1233zd(E) to maximize the process yield.

PRODUCTION METHOD FOR HEXAFLUORO-1,3-BUTADIENE

Provided is a method that is for producing hexafluoro-1,3-butadiene, discharges small amounts of industrial wastes, and is industrially applicable. The method for producing hexafluoro-1,3-butadiene includes a reaction step of reacting a halogenated butane represented by chemical formula, CFX-CFX-CFX-CFX(X, X, X, and Xare each independently a halogen atom other than a fluorine atom) in an organic solvent in the presence of zinc to eliminate the halogen atoms, X, X, X, and X, other than the fluorine atoms to generate hexafluoro-1,3-butadiene, giving a reaction product containing the hexafluoro-1,3-butadiene, and an aftertreatment step of separating the hexafluoro-1,3-butadiene from the reaction product produced in the reaction step, then adding water to a reaction product residue after the separating, and removing the organic solvent, giving an aqueous solution of zinc halide. 1. A method for producing hexafluoro-1 ,3-butadiene , the method comprising:{'sub': 2', '2, 'sup': 1', '2', '3', '4', '1', '2', '3', '4', '1', '2', '3', '4, 'b': 1', '3, 'a reaction step of reacting a halogenated butane represented by chemical formula, CFX-CFX-CFX-CFX(X, X, X, and Xare each independently a halogen atom other than a fluorine atom) in an organic solvent in the presence of zinc to eliminate the halogen atoms, X, X, X, and X, other than the fluorine atoms to generate hexafluoro-,-butadiene, giving a reaction product containing the hexafluoro-1,3-butadiene; and'}an aftertreatment step of separating the hexafluoro-1,3-butadiene from the reaction product produced in the reaction step, then adding water to a reaction product residue after the separating, and removing the organic solvent, giving an aqueous solution of zinc halide.2. The method for producing hexafluoro-1 claim 1 ,3-butadiene according to claim 1 , wherein the organic solvent is an alcohol.3. The method for producing hexafluoro-1 claim 2 ,3-butadiene according to claim 2 , wherein the alcohol is at least one of methanol ...

METHOD FOR DEHYDROCHLORINATION OF HCFC-244BB TO MANUFACTURE HFO-l234YF

A process for making 2,3,3,3-tetrafluoropropene (HFO-1234yf) includes providing a composition including 2-chloro-1,1,1,2-tetrafluoropropane (HCFC-244bb) to a reactor including a heater surface at a surface temperature greater than about 850° F. (454° C.), and then bringing the composition into contact with the heater surface for a contact time of less than 10 seconds to dehydrochlorinate a portion of the HCFC-244bb to make HFO-1234yf.

Process for producing 2,3,3,3-tetrafluoropropene

The present invention discloses a manufacturing process to produce high purity 1234yf from 245eb, which preferably includes the removal of impurities present in 245eb raw material, the dehydrofluorination of 245eb, and the removal of impurities present in final crude product. The disclosed manufacturing process allows the production of a 1234yf product with lower the levels of 1225ye and/or trifluoropropene, preferably in amounts of less than about 500, and 50 ppm, respectively.

SELECTIVE ADSORPTION OF HALOCARBON IMPURITIES CONTAINING CL, BR AND I IN FLUOROCARBONS OR HYDROFLUOROCARBONS USING ADSORBENT SUPPORTED METAL OXIDE

Methods for purification of a fluorocarbon or hydrofluorocarbon containing at least one undesired halocarbon impurities comprise flowing the fluorocarbon or hydrofluorocarbon through at least one adsorbent beds to selectively adsorb the at least one undesired halocarbon impurities through physical adsorption and/or chemical adsorption, wherein the at least one adsorbent beds contain a metal oxide supported on an adsorbent in an inert atmosphere. 1. A process for purification of a fluorocarbon or hydrofluorocarbon containing at least one undesired halocarbon impurities , comprising:flowing the fluorocarbon or hydrofluorocarbon through at least one adsorbent beds to selectively adsorb the at least one undesired halocarbon impurities through physical adsorption and/or chemical adsorption, wherein the at least one adsorbent beds contain a metal oxide supported on an adsorbent in an inert atmosphere.2. The process of claim 1 , further comprising:distilling an outlet stream of the at least one adsorption beds to obtain a purified fluorocarbon or hydrofluorocarbon.3. The process of claim 1 , wherein the at least one undesired halocarbon impurities are Cl-containing claim 1 , Br-containing claim 1 , I-containing claim 1 , or combinations thereof halocarbons.4. The process of claim 3 , wherein the at least one undesired halocarbon impurities are chlorofluorocarbons (CFC) and/or hydrochlorofluorocarbons (HCFC).5. The process of claim 1 , wherein the adsorbent is silica claim 1 , alumina or molecular sieves.6. The process of claim 1 , wherein the metal oxide is CuO or MgO.7. The process of claim 1 , wherein the metal oxide is CuO supported by alumina.8. The process of claim 1 , wherein a flow rate of the fluorocarbon or hydrofluorocarbon into the adsorption bed in vapor phase ranges from 0.5 slm to 500 l/min.9. The process of claim 1 , wherein a temperature of the adsorption bed ranges from −50° C. to 150° C.10. The process of claim 1 , wherein a concentration of impurities in ...

Synthesis of 1,1,2,3-tetrachloropropene

The present invention provides an improved process for producing 1,1,2,3-tetrachloropropene. By using a first reactive distillation column for HCC-250fb dehydrochlorination, and a second reactive distillation column for HCC-240db dehydrochlorination/HCC-1230xf isomerization, the 1,1,2,3-tetrachloropropene manufacturing process can be greatly simplified, resulting in reduced equipment use, energy use, as well as increased productivity.

Process for preparing a chlorinated alkene

Disclosed is a process for preparing a chlorinated alkene, comprising contacting a chlorinated alkane with a catalyst in a dehydrochlorination zone to produce a liquid reaction mixture comprising the chlorinated alkane and the chlorinated alkene, and extracting chlorinated alkene from the reaction mixture, wherein the concentration of the chlorinated alkene in the reaction mixture present in the dehydrochlorination zone is controlled such that the molar ratio of chlorinated alkene:chlorinated alkane is from 1:99 to 50:50.

PROCESS FOR THE MANUFACTURE OF 2,3,3,3-TETRAFLUOROPROPENE BY GAS PHASE FLUORINATION OF PENTACHLOROPROPANE

The present invention provides a process of catalytic fluorination in gas phase of product 1,1,1,2,3-pentachloropropane or/and 1,1,2,2,3-pentachloropropane into product 2,3,3,3-tetrafluoropropene in presence of a catalyst. 1. Process of catalytic fluorination in gas phase of product 1 ,1 ,1 ,2 ,3-pentachloropropane and/or 1 ,1 ,2 ,2 ,3-pentachloropropane into product 2 ,3 ,3 ,3-tetrafluoropropene.2. Process according to claim 1 , carried out in a single stage claim 1 , preferably in one reactor claim 1 , more preferably in one catalytic bed.3. Process according to or claim 1 , wherein the product 2 claim 1 ,3 claim 1 ,3 claim 1 ,3-tetrafluoropropene is present at a concentration of at least 1% claim 1 , preferably more than 2% claim 1 , more preferably more than 3%.4. Process according to any one of to claim 1 , wherein said catalyst is a chromium catalyst claim 1 , supported or unsupported claim 1 , preferably unsupported.5. Process according to any one of to claim 1 , wherein said catalyst further comprises a co-catalyst selected from Ni claim 1 , Co claim 1 , Zn claim 1 , Mn claim 1 , Mg or mixtures thereof claim 1 , preferably nickel or magnesium claim 1 , and wherein said co-catalyst is preferably present in an amount from about 1-10 wt % of said fluorination catalyst.6. Process according to any one of to claim 1 , carried claim 1 , out in the presence of a catalyst comprising Ni—Cr claim 1 , preferably supported.7. Process according to any one of to claim 1 , wherein said catalyst is supported on a support selected from fluorinated alumina claim 1 , fluorinated chromia claim 1 , fluorinated activated carbon or graphite carbon.8. Process according to any one of to claim 1 , wherein said fluorination catalyst is activated with a fluorine-containing compound claim 1 , preferably hydrogen fluoride.9. Process according to one of the to claim 1 , in which the 1 claim 1 ,1 claim 1 ,1 claim 1 ,2 claim 1 ,3-pentachloropropane contains up to 40 mol % of isomer 1 claim 1 ...

METHOD FOR PURIFYING 2-FLUOROBUTANE

The present invention is a method for 2-fluorobutane to obtain highly purified 2-fluorobutane through a process comprising a step for: bringing crude 2-fluorobutane that includes 5 to 50 wt % of butene into contact with a brominating agent that can form a bromonium ion in an aprotic polar solvent in the presence of water or an alcohol having up to 4 carbon atoms; converting the butene into compounds having a boiling point higher than that of 2-fluorobutane, then recovering 2-fluorbutane from the reaction solution; and purifying the recovered 2-fluorabutane by distillation. 1. A conversion method comprising bringing crude 2-fluorobutane that includes 5 to 50 wt % of butene into contact with a brominating agent that can form a bromonium ion in an aprotic polar solvent in the presence of water or an alcohol having up to 4 carbon atoms to convert the butene into compounds having a boiling point higher than that of 2-fluorobutane.2. The conversion method according to claim 1 , wherein the brominating agent is N-bromosuccinimide.3. The conversion method according to claim 1 , wherein the aprotic polar solvent has a boiling point higher than that of 2-fluorobutane by 30° C. or more.4. A method for purifying 2-fluorobutane comprising converting the butene into compounds having a boiling point higher than that of 2-fluorobutane using the conversion method according to claim 1 , collecting 2-fluorobutane from a reaction mixture claim 1 , and purifying the collected 2-fluorobutane by distillation.5. The method for purifying 2-fluorobutane according to claim 4 , wherein the collecting of 2-fluorobutane from the reaction mixture includes collecting 2-fluorobutane under a reduced pressure of 10 to 70 kPa. The present invention relates to 2-fluorobutane that is useful as a plasma reaction gas that is used when producing a semiconductor device, a fluorine-containing medicine intermediate, a hydrofluorocarbon-based solvent, and the like. High-purity 2-fluorobutane is particularly ...

INTEGRATED PROCESS FOR THE PRODUCTION OF 1-CHLORO-3,3,3-TRIFLUOROPROPENE

The present invention is directed to processes for the production of 1233zd from 240fa and HF, with or without a catalyst, at a commercial scale. The 240fa and HF are fed to a reactor operating at high pressure. The resulting product stream comprising 1233zd, HCl, HF, and other byproducts is treated to one or more purification techniques including phase separation and one or more distillations to provide purified 1233zd, which meets commercial product specifications, i.e., having a GC purity of 99.5% or greater. 1. The compound 1233zd , produced by the process steps of:(a) reacting 240fa and HF in a reactor operating at high pressure to produce a product stream comprising 1233zd, HCl, HF, and other byproducts;(b) distilling the product stream from step (a) into a first overhead product and a first bottoms product rich in HF;(c) distilling the first overhead product from step (b) to form a second overhead product containing HCl and a second bottoms product containing organic components and HF;(d) phase separating the second bottoms product from step (c) to separate the HF from the organic components; and(e) caustic scrubbing, drying, and distilling the organic components from step (d) to provide purified 1233zd;wherein 1233zd has a purity of 99.5% or greater, as measured using gas chromatography.2. The compound of claim 1 , containing less than 100 ppm of byproduct compounds selected from the group consisting of 241fa claim 1 , 242fa claim 1 , 243fa claim 1 , and mixtures thereof.3. The compound of claim 1 , containing less than 100 ppm of unsaturated byproduct compounds selected from the group consisting of 1233xf claim 1 , 1224 isomers claim 1 , 1234 isomers and mixtures thereof. This application is a divisional filing from commonly owned, copending U.S. application Ser. No. 13/471,565, filed May 15, 2012, now U.S. Pat. No. x,xxx,xxx. The '565 Application claims domestic priority to commonly owned, copending U.S. Provisional Patent Application Ser. No. 61/487,735, ...

PROCESS FOR PREPARING A CHLORINATED ALKENE

Disclosed is a process for preparing a chlorinated alkene, comprising contacting a chlorinated alkane with a catalyst in a dehydrochlorination zone to produce a liquid reaction mixture comprising the chlorinated alkane and the chlorinated alkene, and extracting chlorinated alkene from the reaction mixture, wherein the concentration of the chlorinated alkene in the reaction mixture present in the dehydrochlorination zone is controlled such that the molar ratio of chlorinated alkene:chlorinated alkane is from 1:99 to 50:50. 1. A process for preparing a chlorinated alkene comprising contacting a chlorinated alkane with a catalyst in a dehydrochlorination zone to produce a liquid reaction mixture comprising the chlorinated alkane and the chlorinated alkene , and extracting chlorinated alkene from the reaction mixture , wherein the concentration of the chlorinated alkene in the reaction mixture present in the dehydrochlorination zone is controlled such that the molar ratio of chlorinated alkene:chlorinated alkane is from 1:99 to 50:50.2. The process of claim 1 , wherein the molar ratio of chlorinated alkene:chlorinated alkane in the reaction mixture is from 5:95 to 50:50.3. The process of or claim 1 , wherein the molar ratio of chlorinated alkene:chlorinated alkane in the reaction mixture is from 5:95 to 30:70.4. The process of any one of to claim 1 , wherein the chlorinated alkane contacted with the catalyst in the dehydrochlorination zone has a purity of about 98.5% or higher.5. The process of any one of to claim 1 , wherein the chlorinated alkene is extracted from the reaction mixture on a continuous basis.6. The process of any one of to claim 1 , wherein extraction of the chlorinated alkene from the reaction mixture is achieved by distillation.7. The process of any one of to claim 1 , wherein the chlorinated alkene is condensed from a gaseous mixture comprising the chlorinated alkene generated in the dehydrochlorination zone.8. The process of claim 7 , wherein the ...

PROCESS FOR PRODUCING A CHLORINATED C3-6 ALKANE

Disclosed is a process for producing a chlorinated C3-6 alkane comprising providing a reaction mixture comprising an alkene and carbon tetrachloride in a principal alkylation zone to produce chlorinated C3-6 alkane in the reaction mixture, and extracting a portion of the reaction mixture from the principal alkylation zone, wherein: 1. A process for producing a chlorinated Calkane comprising providing a reaction mixture comprising an alkene and carbon tetrachloride in an alkylation zone to produce chlorinated Calkane in the reaction mixture , and extracting a portion of the reaction mixture from the alkylation zone , wherein:the reaction mixture present in the alkylation zone and extracted from the alkylation zone additionally comprises a catalyst, and the reaction mixture extracted from the alkylation zone is subjected to an aqueous treatment step in which the reaction mixture is contacted with an aqueous medium in an aqueous treatment zone, a biphasic mixture is formed and an organic phase comprising catalyst is extracted from the biphasic mixture.2. The process of claim 1 , wherein the alkene is ethene claim 1 , propene claim 1 , and/or chlorinated propene.3. The process of claim 1 , wherein the Calkane is 1 claim 1 ,1 claim 1 ,1 claim 1 ,3-Tetrachloropropane.4. The process of claim 1 , wherein the catalyst is a metallic catalyst claim 1 , optionally further comprising an organic ligand.5. The process of claim 4 , wherein the organic ligand is an alkylphosphate claim 4 , for example triethylphosphate and/or tributylphosphate.6. The process of claim 1 , wherein the alkylation zone is operated at a temperature of about 30° C. to about 160° C.7. The process of claim 1 , wherein the alkylation zone is operated at a temperature of about 80° C. to about 120° C.8. The process of claim 1 , wherein the aqueous medium comprises dilute acid claim 1 , optionally dilute hydrochloric acid.9. The process of claim 1 , wherein the majority of the chlorinated Calkane present in the ...

METHOD FOR PREPARING 2,3,3,3-TETRAFLUOROPROPENE AND 1,3,3,3-TETRAFLUOROPROPENE

A method for preparing 2,3,3,3-tetrafluoropropene and 1,3,3,3-tetrafluoropropene, including: providing a first reactor including a first section, a second section, and a third section, with each section being filled with different catalysts, preheating hexafluoropropylene and hydrogen, and introducing the hexafluoropropylene and the hydrogen to the first reactor to yield a first mixture including: 1,1,1,2,3-pentafluoropropane, 1,1,1,2,3,3-hexafluoropropane, and hydrogen fluoride; introducing the first mixture to a first distillation column to yield 1,1,1,2,3,3-hexafluoropropane at a top of the first distillation column and 1,1,1,2,3-pentafluoropropane and hydrogen fluoride at a bottom of the first distillation column, recycling the 1,1,1,2,3,3-hexafluoropropane to a lower part of the first section of the first reactor, and introducing the 1,1,1,2,3-pentafluoropropane and the hydrogen fluoride to a second reactor to yield a second mixture including: 2,3,3,3-tetrafluoropropene, 1,3,3,3-tetrafluoropropene, hydrogen fluoride, and 1,1,1,2,3-pentafluoropropane; and performing water washing, alkaline washing, drying, and distillation on the second mixture to yield 2,3,3,3-tetrafluoropropene and 1,3,3,3-tetrafluoropropene. 1. A method for preparing 2 ,3 ,3 ,3-tetrafluoropropene and 1 ,3 ,3 ,3-tetrafluoropropene , the method comprising:{'sup': '−1', 'a) providing a first reactor comprising a first section, a second section, and a third section, and loading a first catalyst, a second catalyst, and a third catalyst respectively to the first section, the second section, and the third section of the first reactor; preheating hexafluoropropylene and hydrogen, and introducing the hexafluoropropylene and the hydrogen to the first reactor to carry out reactions in the first section, the second section, and the third section respectively so as to yield a first mixture comprising: 1,1,1,2,3-pentafluoropropane, 1,1,1,2,3,3-hexafluoropropane, and hydrogen fluoride, in which a molar ...

SIMPLIFIED RADIOSYNTHESIS OFFLUOROMETHYL BROMIDE

This invention relates to an improved radiosynthesis of [F]fluoromethyl bromide, whereby the distillation step has been improved to remove higher amounts of the dibromomethane radiolabeling precursor. 4. The method according to claim 1 , wherein the Fluorine atom (F) is a F Fluorine isotope and Y is CHor CD.5. The method according to claim 1 , wherein the solid phase extraction (SPE) cartridge(s) containing a stationary phase is selected from the group comprising C18 and tC18.6. The method according to claim 1 , wherein one (1) to five (5) solid phase extraction (SPE) cartridge(s) are used.7. The method according to the claim 1 , wherein compound of Formula (I) is selected from{'sub': 2', '2', '2', '2, 'sup': 18', '18', '18', '18, 'bromofluoromethane (FCHBr), bromo[F]fluoromethane ([F]FCHBr), fluoroiodomethane (FCHI), [F]fluoroiodomethane ([F]FCHI) or their deuterated derivatives{'sup': 18', '18', '18', '18', '18', '18', '18', '18, 'sub': 2', '2', '2', '2, 'deuterated bromo[F]fluoromethane ([F]FCDBr), deuterated bromofluoromethane (FCDBr), monodeuterobromofluoromethane (FCHDBr), monodeutero-bromo[F]fluoromethane ([F]FCHDBr), deuterated fluoroiodomethane (FCDI), deuterated [F]fluoroiodomethane ([F]FCDI), monodeuterofluoroiodomethane (FCHDI), or monodeutero[F]fluoroiodomethane ([F]FCHDI).'}11. The method according to claim 8 , wherein{'sub': 2', '2', '2', '2', '2', '2', '2', '2', '2', '2, 'compound of Formula (II) is selected from deuterated dibromomethane (CDBr), monodeuterodibromomethane (CHDBr), dibromomethane (CHBr), deuterated diiodomethane (CDI), monodeuterodiiodomethane (CHDI), and diiodomethane (CHI) and'}{'sub': 2', '2', '2', '2, 'sup': 18', '18', '18', '18, 'claim-text': {'sup': 18', '18', '18', '18', '18', '18', '18', '18, 'sub': 2', '2', '2', '2, 'deuterated bromo[F]fluoromethane ([F]FCDBr), deuterated bromofluoromethane (FCDBr), monodeuterobromofluoromethane (FCHDBr), monodeutero-bromo[F]fluoromethane ([F]FCHDBr), deuterated fluoroiodomethane (FCDI), ...

METHODS FOR RECOVERING CHLORINATED HYDROCARBONS

Processes for isolating 1,1,1,2,3-pentachloropropane from a crude product stream containing the 1,1,1,2,3-pentachloropropane and ferric chloride. The processes may include deep distillation of the crude, treatment of the crude with a reagent that deactivates the ferric chloride followed by distillation on the deactivated crude stream, aqueous washing of the crude product stream to remove ferric chloride followed by distillation on the deactivated crude stream. Other embodiments simultaneously prepare 1,1,2,3-tetrachloroprene and 1,1,1,2,3-pentachloroprane. 1. A process for isolating 1 ,1 ,1 ,2 ,3-pentachloropropane from a crude product stream containing the 1 ,1 ,1 ,2 ,3-pentachloropropane , the process comprising:(a.) providing a crude product stream containing 1,1,1,2,3-pentachloropropane, where the crude product stream includes ferric chloride;(b.) subjecting the crude product stream to distillation at a pressure of less than 0.040 atmospheres to thereby form a stream including 1,1,1,2,3-pentachloropropane that is substantially free of ferric chloride; and(c.) further processing the stream to isolate 1,1,1,2,3-pentachloropropane.2. The process of claim 1 , where the stream including 1 claim 1 ,1 claim 1 ,1 claim 1 ,2 claim 1 ,3-pentachloropropane includes less than 10 ppm ferric chloride.3. The process of claim 1 , where the crude product stream includes at least 10 ppm ferric chloride.4. The process of claim 1 , where said step of further processing includes distillation at a pressure of greater than 0.050 atmospheres.5. (canceled)6. The process of claim 1 , where the crude product stream is subjected to distillation at a pressure of less than 0.027.7. The process of claim 1 , where said step of subjecting the crude product stream to distillation takes place at a temperature of less than 120° C.8. The process of claim 1 , where the crude product stream includes at least 80 ppm ferric chloride.9. The process of claim 1 , where the crude product stream includes at ...

METHOD FOR PRODUCING 2,3,3,3-TETRAFLUOROPROPENE

This invention provides a method for producing 2,3,3,3-tetrafluoropropene or 2-chloro-1,1,1,2-tetrafluoropropane, which is a precursor of 2,3,3,3-tetrafluoropropene, in two or three reaction steps, using at least one chlorine-containing compound selected from the group consisting of 1,1,1,2,3-pentachloropropane, 2,3-dichloro-1,1,1-trifluoropropane, and 1,1,2,3-tetrachloropropene as a starting material, the reaction products of at least two of the steps being supplied to the same distillation apparatus to subject the products to a separation operation simultaneously. With this method, 2,3,3,3-tetrafluoropropene or 2-chloro-1,1,1,2-tetrafluoropropane, which is a precursor of 2,3,3,3-tetrafluoropropene, can be efficiently produced with reduced energy and equipment costs in an economically advantageous manner. 1. A method for producing 2 ,3 ,3 ,3-tetrafluoropropene , comprising the reaction steps of:(1) obtaining 2-chloro-3,3,3-trifluoropropene by reacting a fluorinating agent with at least one chlorine-containing compound selected from the group consisting of 1,1,1,2,3-pentachloropropane, 2,3-dichloro-1,1,1-trifluoropropane, and 1,1,2,3-tetrachloropropene; and(2) obtaining 2,3,3,3-tetrafluoropropene by reacting the 2-chloro-3,3,3-trifluoropropene with anhydrous hydrogen fluoride in a gas phase in the presence of a fluorination catalyst while heating,the method further comprising the step of supplying the products of reaction step (1) and the products of reaction step (2) to the same distillation apparatus to separate the products into a hydrogen chloride-containing fraction and a fraction substantially free of hydrogen chloride.2. A method for producing 2 ,3 ,3 ,3-tetrafluoropropene , comprising the reaction steps of:(1) obtaining 2-chloro-3,3,3-trifluoropropene by reacting a fluorinating agent with at least one chlorine-containing compound selected from the group consisting of 1,1,1,2,3-pentachloropropane, 2,3-dichloro-1,1,1-trifluoropropane, and 1,1,2,3- ...

SEPARATION OF R-1233 FROM HYDROGEN FLUORIDE

The invention relates to a process for separating monochloro-trifluoropropenes such as HCFC-1233 from azeotrope or azeotrope like combinations with HF. The process employs a cold, liquid phase separations and multiple azeotropic distillation trains. 1. A method for producing monochloro-trifluoropropene from an azeotrope or azeotrope like combination of monochloro-trifluoropropene and HF which comprises (a) distilling a reaction mixture including hydrogen fluoride , monochloro-trifluoropropene , and hydrogen chloride to remove hydrogen chloride as overhead and a bottoms stream , (b) cooling the bottoms stream to form two liquid phases , (c) separating said two liquid phases in a liquid phase separator into a first light phase comprising hydrogen fluoride in excess over an azeotrope or azeotropo like combination of monochloro-trifluoropropene and hydrogen fluoride and a second heavy phase comprising an excess of monochloro-trifluoropropene over an azeotrope or azeotrope like combination of monochloro-trifluoropropene , (d) distilling said first light phase in a distillation column to produce a top stream of an azeotrope of monochloro-trifluoropropene and hydrogen fluoride and a bottoms stream of hydrogen fluoride , (e) contacting said second heavy phase with an absorbent to remove HF followed by distilling said second heavy phase in a distillation train to provide a monochloro-trifluoropropene stream.2. The method of wherein said reaction mixture including hydrogen fluoride claim 1 , monochloro-trifluoropropene claim 1 , and hydrogen chloride is formed by reacting 1 claim 1 ,1 claim 1 ,1 claim 1 ,3 claim 1 ,3-pentachloropropane and/or 1 claim 1 ,1 claim 1 ,3 claim 1 ,3-tetrachloro-2-propene and hydrogen fluoride in a reactor.3. The method of wherein said bottoms stream is cooled to from about 60 to +30 degrees C.4. The method of wherein said top stream of an azeotrope of monochloro-trifluoropropene and hydrogen fluoride is recycled to said liquid phase separator.5. ...

METHOD FOR PURIFYING HYDROFLUOROCARBONS

The present invention relates to a process for purifying a composition comprising a hydrohalocarbon B comprising the steps of: i) providing a composition A1 comprising a hydrohalocarbon B and at least one impurity C different from said hydrohalocarbon B, ii) compressing said composition A1, and optionally cooling it, so as to obtain said hydrohalocarbon B in liquid form in order to form a liquid stream A2 comprising said hydrohalocarbon B, iii) distilling said stream A2 obtained in step ii) in order to form and recover a stream A3 comprising said hydrohalocarbon B, characterized in that step iii) is carried out in a pressurized distillation device comprising one or more rotating packed beds. 111-. (canceled)12. A process for purifying a composition comprising a hydrohalocarbon B comprising the steps of:i. providing a composition A1 comprising a hydrohalocarbon B and at least one impurity C different from said hydrohalocarbon B,ii. compressing said composition A1, and optionally cooling it, so as to obtain said hydrohalocarbon B in liquid form in order to form a liquid stream A2 comprising said hydrohalocarbon B,iii. distilling said stream A2 obtained in step ii) in order to form and recover a stream A3 comprising said hydrohalocarbon B, wherein step iii) is carried out in a pressurized distillation device comprising one or more rotating packed beds.13. The process as claimed in claim 12 , wherein said stream A2 is introduced in liquid form into said one or more rotating packed beds and is distributed therein radially with respect to the rotatable shaft thereof.14. The process as claimed in claim 12 , wherein the speed of said one or more rotating packed beds is from 100 to 3000 revolutions per minute (rpm).15. The process as claimed in claim 12 , wherein step iii) is carried out at a pressure of from 2 to 200 bar absolute.16. The process as claimed in claim 12 , wherein said hydrohalocarbon B comprises three carbon atoms and at least one halogen atom.17. The process ...

METHOD FOR PRODUCING FLUORINE-CONTAINING COMPOUNDS

Provided is an efficient method for producing a fluorine-containing compound without the need for a rectification column involving numerous stages, extractive distillation, etc. The method for producing a fluorine-containing compound includes the step of supplying a composition containing a mixture to a dehydrohalogenation step, the mixture being at least one member selected from the group consisting of mixtures of at least one fluoroolefin and at least one hydrofluorocarbon, the boiling points of which are close to each other, azeotropic mixtures of at least one fluoroolefin and at least one hydrofluorocarbon, and pseudo-azeotropic compounds of at least one fluoroolefin and at least one hydrofluorocarbon. 2. The production method according to wherein the fluoroolefin represented by formula (1) is at least one halogenated fluoroolefin selected from the group consisting of 1 claim 1 ,1 claim 1 ,1 claim 1 ,2 claim 1 ,3-pentafluoropropene (HFO-1225ye) claim 1 , 1 claim 1 ,1 claim 1 ,1 claim 1 ,3-tetrafluoropropene (HFO-1234ze) claim 1 , 1 claim 1 ,1 claim 1 ,1 claim 1 ,3 claim 1 ,3-pentafluoropropene (HFO-1225zc) claim 1 , 1 claim 1 ,1 claim 1 ,1-trifluoropropene (HFO-1243zf) claim 1 , 1 claim 1 ,2-difluoroethylene (HFO-1132) claim 1 , 2 claim 1 ,3 claim 1 ,3 claim 1 ,3-tetrafluoropropene (HFO-1234yf) claim 1 , hexafluoropropene (HFP) claim 1 , trifluoroethylene (HFO-1123) claim 1 , fluoroethylene (HFO-1141) claim 1 , tetrafluoroethylene (HFO-1114) claim 1 , and 1 claim 1 ,1-difluoroethylene (HFO-1132a); andthe hydrofluorocarbon represented by formula (2) is at least one saturated halogenated fluorocarbon selected from the group consisting of 1,1,1,2,2-pentafluoropropane (HFC-245cb), 1,1,1,3,3,3-hexafluoropropane (HFC-236fa), 1,1,1,2,3,3,3-heptafluoropropane (HFC-227ea), 1,1,2,2-hexafluoroethane (HFC-134), 1,1-difluoroethane (HFC-152a), 1,1,1,2-hexafluoroethane (HFC-134a), fluoroethane (HFC-161), 1,1,1-trifluoroethane (HFC-143a), and 1,1,1,2,2-pentafluoroethane (HFC- ...

AZEOTROPIC COMPOSITIONS OF 1,1,1,3,3-PENTACHLOROPROPANE AND HYDROGEN FLUORIDE

Provided are methods for forming azeotropic or azeotrope-like mixtures of 1,1,1,3,3-pentachloro-propane (240fa) and hydrogen fluoride. Such compositions are useful as an intermediate in the production of HFC-245fa and HCFO-1233zd. 1. A method of forming an azeotropic or azeotrope-like composition which consists essentially of blending from about 90 to about 97 weight percent hydrogen fluoride and from about 10 to about 3 weight percent 1 ,1 ,1 ,3 ,3-pentachloropropane (240fa) , which composition has a boiling point of about 24° C. to about 60° C. at pressure of about 17.8 psia to pressure of about 55.4 psia.2. The method of claim 1 , wherein the composition consists of hydrogen fluoride and 1 claim 1 ,1 claim 1 ,1 claim 1 ,3 claim 1 ,3-pentachloropropane (240fa).3. The method of claim 1 , wherein the composition consists essentially of about 92±2 weight percent HF and about 8±2 weight percent 240fa and has a boiling point of about 24° C. at 17.8 psia.4. A method of forming an azeotropic or azeotrope-like composition which comprises blending hydrogen fluoride and 1 claim 1 ,1 claim 1 ,1 claim 1 ,3 claim 1 ,3-pentachloropropane (240fa) claim 1 , which composition has a boiling point of about 24° C. to about 60° C. at pressure of about 17.8 psia to pressure of about 55.4 psia.5. The method of claim 4 , wherein the composition comprises from about 99 to about 1 weight percent HF.6. The method of claim 4 , wherein the composition comprises from about 40 weight percent to about 97 weight percent HF.7. The method of claim 4 , wherein the composition comprises from about from about 90 to about 97 weight percent HF.8. The method of claim 4 , wherein the composition comprises from about 60 to about 3 weight percent 240fa.9. The method of claim 4 , wherein the composition comprises from about 90 weight percent to about 95 weight percent 240fa.10. The method of claim 4 , wherein the composition comprises from about 10 weight percent to about 3 weight percent 240fa.11. The ...

PROCESS FOR PRODUCING A CHLORINATED C3-6 ALKANE

Disclosed is a process for producing a chlorinated C3-6 alkane comprising providing a reaction mixture comprising an alkene and carbon tetrachloride in a principal alkylation zone to produce chlorinated C3-6 alkane in the reaction mixture, and extracting a portion of the reaction mixture from the principal alkylation zone, wherein: 1. A process for producing a chlorinated Calkane comprising providing a reaction mixture comprising an alkene and carbon tetrachloride in a principal alkylation zone to produce chlorinated Calkane in the reaction mixture , and extracting a portion of the reaction mixture from the principal alkylation zone , wherein:{'sub': 3-6', '3-6, 'a) the concentration of the chlorinated Calkane in the reaction mixture in the principal alkylation zone is maintained at a level such that the molar ratio of chlorinated Calkane:carbon tetrachloride in the reaction mixture extracted from the alkylation zone does not exceed 95:5 when the principal alkylation zone is in continuous operation; and/or'}b) the reaction mixture extracted from the principal alkylation zone additionally comprises alkene and the reaction mixture is subjected to a dealkenation step in which at least about 50% or more by weight of the alkene present in the reaction mixture is extracted therefrom and at least about 50% of the extracted alkene is fed back into the reaction mixture provided in the principal alkylation zone; and/orc) the reaction mixture present in the principal alkylation zone and extracted from the principal alkylation zone additionally comprises a catalyst, and the reaction mixture extracted from the principal alkylation zone is subjected to an aqueous treatment step in which the reaction mixture is contacted with an aqueous medium in an aqueous treatment zone, a biphasic mixture is formed and an organic phase comprising catalyst is extracted from the biphasic mixture.2. The process of claim 1 , wherein the alkene is ethene claim 1 , propene claim 1 , and/or ...

PROCESS FOR CATALYTIC CONVERSION OF MIXTURES OF HCFO-1233zd(Z) AND HCFC-244fa INTO HCFO-1233zd(E)

A method for conversion of a composition containing HCFO-1233zd(Z) and HCFC-244fa to form HCFO-1233zd(E) by reacting a mixture including HCFO-1233zd(Z) and HCFC-244fa in a vapor phase in the presence of a catalyst to simultaneously isomerize HCFO-1233zd(Z) to form HCFO-1233zd(E) and dehydrohalogenate HCFC-244fa to form HCFO-1233zd(E). The catalyst may be a chromium-based catalyst such as chromium trifluoride, chromium oxyfluoride, or chromium oxide, for example. 1. A method for simultaneous conversion of a mixture of HCFO-1233zd(Z) and HCFC-244fa to form HCFO-1233zd(E) , comprising the steps of:providing a mixture including HCFO-1233zd(Z) and HCFC-244fa; andreacting the HCFO-1233zd(Z) and HCFC-244fa mixture in a vapor phase in the presence of a catalyst to simultaneously isomerize HCFO-1233zd(Z) to form HCFO-1233zd(E) and dehydrohalogenate HCFC-244fa to form HCFO-1233zd(E).2. The method of claim 1 , wherein the catalyst is a chromium-based catalyst.3. The method of claim 1 , wherein the catalyst comprises a catalyst selected from the group consisting of chromium trifluoride (CrF) claim 1 , chromium oxide (CrO) claim 1 , and chromium oxyfluoride (CrOF claim 1 , where x may be 1 or 2 claim 1 , y may be 1 or 2 claim 1 , and z may be 1 claim 1 , 2 claim 1 , or 4) claim 1 , and combinations thereof.410.-. (canceled)11. The method of claim 1 , wherein said reacting step is conducted at a temperature between 80° C. and 170° C.12. The method of claim 11 , wherein said reacting step is conducted at a temperature between 100° C. and 275° C.13. The method of claim 1 , wherein a contact time between the composition and the catalyst is between 1 second and 150 seconds.14. The method of claim 1 , wherein a pressure in the reactor is between 0 psig and 100 psig.15. The method of claim 1 , wherein during the reacting step claim 1 , the reactor includes less than 50 ppm water.16. The method of claim 1 , wherein in the providing step claim 1 , total impurities are present in an ...

PROCESS FOR PRODUCING 2,3,3,3-TETRAFLUOROPROPENE

The instant invention relates to a process and method for manufacturing 2,3,3,3-tetrafluoropropene by dehydrohalogenating a reactant stream of 2-chloro-1,1,1,2-tetrafluoropropane that is substantially free from impurities, particularly halogenated propanes, propenes, and propynes. 135-. (canceled)36. A composition comprising:2-chloro-1,1,1,2-tetrafluoropropane (244bb) in an amount greater than 95 wt. %; andless than 500 ppm of any halogenated hydrocarbon impurity.37. The composition of claim 36 , comprising 2-chloro-1 claim 36 ,1 claim 36 ,1 claim 36 ,2 tetrafluoropropane (244bb) in an amount greater than 97 wt. %.38. The composition of claim 36 , comprising 2-chloro-1 claim 36 ,1 claim 36 ,1 claim 36 ,2-tetrafluoropropane (244bb) in an amount greater than 99 wt. %.39. The composition of claim 36 , comprising 2-chloro-1 claim 36 ,1 claim 36 ,1 claim 36 ,2-tetrafluoropropane (244bb) in an amount greater than 99.5 wt. %.41. The composition of claim 36 , wherein said impurity is selected from the group consisting of 1 claim 36 ,1 claim 36 ,1 claim 36 ,2 claim 36 ,2-pentafluoropropane (HFC-245cb) claim 36 , 1 claim 36 ,1 claim 36 ,1 claim 36 ,2-tetrafluoropropane (HFC-254eb) claim 36 , 1 claim 36 ,1 claim 36 ,1 claim 36 ,3-tetrafluoropropane (HFC-254fb) claim 36 , 3 claim 36 ,3 claim 36 ,3-trifluoropropene (HFO-1243z1) claim 36 , 2 claim 36 ,3-dichloro-3 claim 36 ,3-difluoropropene (HCFO-1232xf) claim 36 , 2-chloro-3 claim 36 ,3 claim 36 ,3-trifluoropropene (HCFO-1233xf) claim 36 , 1-chloro-3 claim 36 ,3 claim 36 ,3-trifluoropropene (HCFO-1233zd) claim 36 , 1 claim 36 ,2-dichloro-3 claim 36 ,3 claim 36 ,3-trifluoropropene (HCFO-1223xd) claim 36 , chlorotetrafluoropropenes (HCFO-1224 isomers) claim 36 , 1 claim 36 ,2 claim 36 ,3 claim 36 ,3 claim 36 ,3-pentafluoropropene (HFO-1225ye (cis and trans isomers)) claim 36 , 1 claim 36 ,3 claim 36 ,3 claim 36 ,3-tetrafluoropropene (HFO-1234ze (cis and trans isomers)) claim 36 , 3 claim 36 ,3 claim 36 ,3-trifluoropropyne claim ...

Method for the production and purification of 2,3,3,3-tetrafluoropropene

The invention refers to a process for the production of 2,3,3,3-tetrafluoropropene carried out starting from a starting composition comprising the stages of bringing the starting composition into contact, in the presence of a catalyst, with HF in order to produce a composition A comprising 2,3,3,3-tetrafluoropropene (HFO-1234yf), intermediate products B consisting of 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf), 1,1,1,2,2-pentafluoropropane (HFC-245cb), and byproducts C consisting of E-1-chloro-3,3,3-trifluoro-1-propene (HCFO-1233zdE), trans-1,3,3,3-tetrafluoro-1-propene (HFO-1234zeE) and 1,1,1,3,3-pentafluoropropane (HFC-245fa); recovery of said composition A and purification of the latter in order to form and recover a first gas stream G 1 comprising HCl, 2,3,3,3-tetrafluoropropene (HFO-1234yf), a part of the unreacted HF, a part of the intermediate products B and a part of the byproducts C; and a stream, which is preferably liquid, L 1 comprising a part of the unreacted HF, a part of the intermediate products B and a part of the byproducts C.

METHOD FOR PURIFYING 1,1,1,2,2-PENTAFLUOROPROPANE

The present invention relates to a process for purifying a stream including 1,1,1,2,2-pentafluoropropane, comprising the steps of i) providing a stream A comprising 1,1,1,2,2-pentafluoropropane and at least one of the compounds selected from the group consisting of 2-chloro-1,1,1,3,3-pentafluoropropane, 1,2-dichloro-3,3,3-trifluoropropene, 2-chloro-1,3,3,3-tetrafluoropropene; ii) purification, preferably by distillation, of the stream A provided in i) in order to form a first stream A comprising 1,1,1,2,2-pentafluoropropane, preferably recovered at the top of the distillation column, and a second stream A comprising said at least one of the compounds selected from the group consisting of 2-chloro-1,1,1,3,3-pentafluoropropane, 1,2-dichloro-3,3,3-trifluoropropene, 2-chloro-1,3,3,3-tetrafluoropropene, preferably recovered at the bottom of the distillation column. 111-. (canceled)12. A process for purifying a stream including 1 ,1 ,1 ,2 ,2-pentafluoropropane , comprising the steps of:i) providing a stream A comprising 1,1,1,2,2-pentafluoropropane and at least one of the compounds selected from the group consisting of 2-chloro-1,1,1,3,3-pentafluoropropane, 1,2-dichloro-3,3,3-trifluoropropene, and 2-chloro-1,3,3,3-tetrafluoropropene; and{'b': 1', '2, 'ii) purifying stream A provided in i) under conditions effective for forming a first stream A comprising 1,1,1,2,2-pentafluoropropane and a second stream A comprising said at least one of the compounds selected from the group consisting of 2-chloro-1,1,1,3,3-pentafluoropropane, 1,2-dichloro-3,3,3-trifluoropropene, and 2-chloro-1,3,3,3-tetrafluoropropene.'}132. The process as claimed in claim 12 , wherein stream A provided in step i) and second stream A of step ii) comprise at least two of the compounds selected from the group consisting of 2-chloro-1 claim 12 ,1 claim 12 ,1 claim 12 ,3 claim 12 ,3-pentafluoropropane claim 12 , 1 claim 12 ,2-dichloro-3 claim 12 ,3 claim 12 ,3-trifluoropropene claim 12 , and 2-chloro-1 claim ...

HIGH-PURITY 1,1,1,2,3,3-HEXAFLUOROPROPANE, METHOD FOR PRODUCING SAME AND USE THEREOF

The present invention relates to a method for producing high-purity 1,1,1,2,3,3-hexafluoropropane and a composition containing mainly 1,1,1,2,3,3-hexafluoropropane, suitable for use as a cleaning agent in the semiconductor industry. 114-. (canceled)15. A process for producing 1 ,1 ,1 ,2 ,3 ,3-hexafluoropropane , which comprisesi. providing a stream comprising at most 99% by weight of 1,1,1,2,3,3-hexafluoropropane, and{'sub': 3', '6', '4', '8', '2, 'ii. treating said stream to give a composition comprising at least 99.4% by weight of HFC-236ea, and at most 0.6% by weight of at least one compound selected from the group consisting of hexafluoropropene, cis/trans-1,2,3,3,3-pentafluoropropene (HFO-1225ye(Z/E)), 1,1,3,3,3-pentafluoropropene (HFO-1225zc), 1,1,2,3,3-pentafluoropropene (HFO-1225yc), 2,3,3,3-tetrafluoropropene (HFO-1234yf), cis/trans-1,3,3,3-tetrafluoropropene (HFO-1234ze(Z/E)), 3,3,3-trifluoropropene (HFO-1243zf), 1,1,1,2,3,3,3-peptafluoropropane (HFC-227ea), 1,1,1,3,3,3-hexafluoropropane (HFC-236fa), 1,1,1,3,3-pentafluoropropane (HFC-245fa), 1,1,1,2,3-pentafluoropropane (HFC-245eb), 1,1,1,2-tetrafluoropropane (HFC-254eb), 1,1,1,3-tetrafluoropropane (HFC-254fb), 1,1,1-trifluoropropane (HFC-263fb), 1,1,2-trifluoroethane (HFC-143), hexafluorocyclopropane (cyclo-CF), octafluorocyclobutane (cyclo-CF), cis/trans-1,1,1,4,4,4-hexafluoro-2-butene (HFO-356mff(Z/E)), water, hydrogen, nitrogen, oxygen, CO, CO and HF.'}16. The process as claimed in claim 15 , further comprising{'sub': 3', '6', '4', '8', '2, 'at least one step of hydrogenation of hexafluoropropene to give a stream comprising 1,1,1,2,3,3-hexafluoropropane, optionally unreacted hexafluoropropene, unreacted hydrogen, cis/trans-1,2,3,3,3-pentafluoropropene (HFO-1225ye(Z/E)), 1,1,3,3,3-pentafluoropropene (HFO-1225zc), 1,1,2,3,3-pentafluoropropene (HFO-1225yc), 2,3,3,3-tetrafluoropropene (HFO-1234yf), cis/trans-1,3,3,3-tetrafluoropropene (HFO-1234ze(Z/E)), 3,3,3-trifluoropropene (HFO-1243zf), 1,1,1,2,3,3,3- ...

METHOD FOR PREPARING 2,3,3,3-TETRAFLUORO-1-PROPENE AND RECYCLING 2-CHLORO-3,3,3-TRIFLUOROPROPENE FREE OF IMPURITIES

The invention concerns a method for purifying 2-chloro-3,3,3-trifluoropropene (1233xf) from a first composition comprising 2-chloro-3,3,3-trifluoropropene and at least one of the compounds chosen from the group consisting of E-1-chloro-3,3,3-trifluoro-1-propene (1233zd E), 1,1,1,3,3-pentafluoropropane (245fa) and 1,1,1,3,3,3-hexafluoropropane (236fa), said method comprising the steps of bringing said first composition into contact with at least one organic extractant in order to form a second composition; extractive distillation of said second composition in order to form a third composition comprising at least one of the compounds chosen from the group consisting of E-1-chloro-3,3,3-trifluoro-1-propene (1233zd E), 1,1,1,3,3-pentafluoropropane (245fa) and 1,1,1,3,3,3-hexafluoropropane (236fa), and said organic extractant; and a stream comprising 2-chloro-3,3,3-trifluoropropene. 118-. (canceled)19. A process for purifying 2-chloro-3 ,3 ,3-trifluoropropene (1233xf) from a first composition comprising 2-chloro-3 ,3 ,3-trifluoropropene and at least one compound selected from the group consisting of E-1-chloro-3 ,3 ,3-trifluoro-1-propene (1233zdE) , 1 ,1 ,1 ,3 ,3-pentafluoropropane (245fa) and 1 ,1 ,1 ,3 ,3 ,3-hexafluoropropane (236fa) , said process comprising:a) placing said first composition in contact with at least one organic extracting agent to form a second composition; i) a third composition comprising said organic extracting agent and said at least one compound selected from the group consisting of E-1-chloro-3,3,3-trifluoro-1-propene (1233zdE), 1,1,1,3,3-pentafluoropropane (245fa) and 1,1,1,3,3,3-hexafluoropropane (236fa), and', 'ii) a stream comprising 2-chloro-3,3,3-trifluoropropene; and, 'b) distilling said second composition by extractive distillation to formc) recovering and separating out said third composition to form a stream comprising said organic extracting agent and a stream comprising said at least one compound selected from the group consisting of ...

PROCESS FOR THE MANUFACTURE OF 2,3,3,3-TETRAFLUOROPROPENE BY GAS PHASE FLUORINATION OF PENTACHLOROPROPANE

The present invention provides a process of catalytic fluorination in gas phase of product 1,1,1,2,3-pentachloropropane or/and 1,1,2,2,3-pentachloropropane into product 2,3,3,3-tetrafluoropropene in presence of a catalyst. 1. Process of catalytic fluorination in gas phase of product 1 ,1 ,1 ,2 ,3-pentachloropropane and/or 1 ,1 ,2 ,2 ,3-pentachloropropane into product 2 ,3 ,3 ,3-tetrafluoropropene.2. Process according to claim 1 , carried out in a single stage claim 1 , preferably in one reactor claim 1 , more preferably in one catalytic bed.3. Process according to or claim 1 , wherein the product 2 claim 1 ,3 claim 1 ,3 claim 1 ,3-tetrafluoropropene is present at a concentration of at least 1% claim 1 , preferably more than 2% claim 1 , more preferably more than 3%.4. Process according to any one of to claim 1 , wherein said catalyst is a chromium catalyst claim 1 , supported or unsupported claim 1 , preferably unsupported.5. Process according to any one of to claim 1 , wherein said catalyst further comprises a co-catalyst selected from Ni claim 1 , Co claim 1 , Zn claim 1 , Mn claim 1 , Mg or mixtures thereof claim 1 , preferably nickel or magnesium claim 1 , and wherein said co-catalyst is preferably present in an amount from about 1-10 wt % of said fluorination catalyst.6. Process according to any one of to claim 1 , carried out in the presence of a catalyst comprising Ni—Cr claim 1 , preferably supported.7. Process according to any one of to claim 1 , wherein said catalyst is supported on a support selected from fluorinated alumina claim 1 , fluorinated chromia claim 1 , fluorinated activated ca bon or graphite carbon.8. Process according to any one of to claim 1 , wherein said fluorination catalyst is activated with a fluorine-containing compound claim 1 , preferably hydrogen fluoride.9. Process according to one of the to claim 1 , in which the 1 claim 1 ,1 claim 1 ,1 claim 1 ,2 claim 1 ,3-pentachloropropane contains up to 40 mole of isomer 1 claim 1 ,1 claim 1 ...

PROCESS FOR PRODUCING 2,3,3,3-TETRAFLUOROPROPENE

The present invention discloses a manufacturing process to produce high purity 1234yf from 245eb, which preferably includes the removal of impurities present in 245eb raw material, the dehydrofluorination of 245eb, and the removal of impurities present in final crude product. The disclosed manufacturing process allows the production of a 1234yf product with lower the levels of 1225ye and/or trifluoropropene, preferably in amounts of less than about 500, and 50 ppm, respectively. 120-. (canceled)21. A composition comprising 1 ,1 ,1 ,2 ,3-pentafluoropropane (245eb) , and including less than 2% by weight of any one of the compounds 1 ,1 ,1 ,2 ,3 ,3-hexafluoropropane (236ea) and 1 ,2 ,3 ,3 ,3 -pentaflu oropropene (1225ye).22. The coposition of claim 21 , having a concentation of 1 claim 21 ,1 claim 21 ,1 claim 21 ,2 claim 21 ,3-pentafluoropropane (245eb) of at least 99.9%.23. The coposition of claim 21 , including less than 1% by weight of 1 claim 21 ,1 claim 21 ,1 claim 21 ,2 claim 21 ,3 claim 21 ,3-hexafluoropropane (236ea).24. The coposition of claim 21 , including less than 1% by weight of 1 claim 21 ,2 claim 21 ,3 claim 21 ,3 claim 21 ,3-pentafluoropropene (1225ye).25. The coposition of claim 21 , including less than 0.5% by weight of 1 claim 21 ,1 claim 21 ,1 claim 21 ,2 claim 21 ,3 claim 21 ,3-hexafluoropropane (236ea).26. The coposition of claim 21 , including less than 0.5% by weight of 1 claim 21 ,2 claim 21 ,3 claim 21 ,3 claim 21 ,3-pentafluoropropene (1225ye). The present application is a continuation application of U.S. application Ser. No. 14/318,746, filed Jun. 30, 2014, which application is a continuation of U.S. application Ser. No. 12/510,740, filed Jul. 28, 2009, now U.S. Pat. No. 8,766,020, which application claims the priority benefit of and incorporates herein by reference U.S. provisional application No. 61/085,141 filed Jul. 31, 2008. Application Ser. No. 12/510,740 also claims the priority benefit of as a continuation-in-part and incorporates ...

PROCESS FOR THE PREPARATION OF FLUOROOLEFIN COMPOUNDS

The subject of the invention is a process for the preparation of fluoroolefin compounds. It relates more particularly to a process for manufacturing a (hydro)fluoroolefin compound comprising (i) bringing at least one compound comprising from three to six carbon atoms, at least two fluorine atoms and at least one hydrogen atom, provided that at least one hydrogen atom and one fluorine atom are located on adjacent carbon atoms, into contact with potassium hydroxide in a stirred reactor, containing an aqueous reaction medium, equipped with at least one inlet for the reactants and with at least one outlet, in order to give the (hydro)fluoroolefin compound, which is separated from the reaction medium in gaseous form, and potassium fluoride, (ii) bringing the potassium fluoride formed in (i) into contact, in an aqueous medium, with calcium hydroxide in order to give potassium hydroxide and to precipitate calcium fluoride, (iii) separation of the calcium fluoride precipitated in step (ii) from the reaction medium and (iv) optionally, the reaction medium is recycled after optional adjustment of the potassium hydroxide concentration to step (i). 111.-. (canceled)12. A process for the manufacture of a fluoroolefin comprising:(a) dehydrofluorinating a fluoroalkane in the presence of KOH to produce a fluoroalkene;(b) withdrawing a reaction stream comprising spent KOH; and(c) recovering spent KOH.13. The process of wherein the fluoroalkane is comprised of a compound of formula CFCYRCR′XH claim 12 , in which Y represents a hydrogen atom or a halogen atom chosen from fluorine claim 12 , chlorine claim 12 , bromine or iodine and X represents a halogen atom chosen from fluorine claim 12 , chlorine claim 12 , bromine or iodine; n and p are integers and may independently take the value zero claim 12 , 1 or 2 provided that (n+p)=2 claim 12 , and R represents a fluorine atom when R′ represents a hydrogen atom or R represents a hydrogen atom when R′ represents a fluorine atom.14. The ...

Process for Purifying (Hydro)Fluoroalkenes

The invention relates to a process for removing one or more undesired (hydro)halocarbon compounds from a (hydro)fluoroalkene, the process comprising contacting a composition comprising the (hydro)fluoroalkene and one or more undesired (hydro)halocarbon compounds with an aluminium-containing absorbent, activated carbon, or a mixture thereof.

AZEOTROPE-LIKE COMPOSITION OF 2-CHLOR0-3,3,3-TRIFLUOROPROPENE (HCFC-1233xf) AND HYDROGEN FLUORIDE (HF)

Provided are azeotropic and azeotrope-like compositions of 2-chloro-3,3,3-trifluoropropene (HCFO-1233xf) and hydrogen fluoride (HF). Such azeotropic and azeotrope-like compositions are useful as intermediates in the production of 2,3,3,3-tetrafluoropropene (HFO-1234yf). 1. An azeotropic or azeotrope-like composition consisting essentially of hydrogen fluoride and 2-chloro-3 ,3 ,3-trifluoropropene.2. An azeotropic or azeotrope-like composition which consists essentially of from about 6.2 mole percent to about 90.7 mole percent hydrogen fluoride and from about 9.3 mole percent to about 93.8 mole percent 2-chloro-3 ,3 ,3-trifluoropropene , which composition has a boiling point of from about 0° C. to about 61° C. at a pressure of from about 15 psia to about 107 psia.3. The composition of which consists of hydrogen fluoride and 2-chloro-3 claim 2 ,3 claim 2 ,3-trifluoropropene.4. The composition of wherein the hydrogen fluoride is present in the amount from about 53.5 mole percent to about 86.7 mole percent.5. The composition of wherein the hydrogen fluoride is present in the amount from about 79.3 mole percent to about 85.3 mole percent.6. The composition of wherein the hydrogen fluoride is present in the amount from about 60 mole percent to about 71 mole percent.7. The composition of wherein the hydrogen fluoride is present in the amount from about 60.2 mole percent to about 71.7 mole percent.8. The composition of wherein the 2-chloro-3 claim 2 ,3 claim 2 ,3-trifluoropropene is present in the amount from about 13.3 mole percent to about 46.5 mole percent.9. The composition of wherein the 2-chloro-3 claim 2 ,3 claim 2 ,3-trifluoropropene is present in the amount from about 14.7 mole percent to about 20.7 mole percent.10. The composition of wherein the 2-chloro-3 claim 2 ,3 claim 2 ,3-trifluoropropene is present in the amount from about 29 mole percent to about 40 mole percent.11. The composition of wherein the 2-chloro-3 claim 2 ,3 claim 2 ,3-trifluoropropene is present ...

Method for making 1,1,3,3-tetrachloropropene

A process for the manufacture of 1,1,3,3-tetrachloropropene, the process comprising dehydrochlorinating 1,1,1,3,3-pentachloropropane.

Azeotrope-like compositions of tetrafluoropropene and water

Provided are azeotropic and azeotrope-like compositions of trans-1,3,3,3-tetrafluoropropene (HFO-1234ze(E)) and water. Such azeotropic and azeotrope-like compositions are useful in isolating trans-1,3,3,3-tetrafluoropropene from impurities during production. Azeotropes of the instant invention are similarly useful in final compositions or for the manufacture of final compositions, such as blowing agent, propellants, refrigerants, diluents for gaseous sterilization and the like.

PROCESS FOR PREPARING A CHLORINATED ALKENE

Disclosed is a process for preparing a chlorinated alkene, comprising contacting a chlorinated alkane with a catalyst in a dehydrochlorination zone to produce a liquid reaction mixture comprising the chlorinated alkane and the chlorinated alkene, and extracting chlorinated alkene from the reaction mixture, wherein the concentration of the chlorinated alkene in the reaction mixture present in the dehydrochlorination zone is controlled such that the molar ratio of chlorinated alkene:chlorinated alkane is from 1:99 to 50:50. 1. A process for preparing a chlorinated alkene comprising contacting a chlorinated alkane with a catalyst in a dehydrochlorination zone to produce a liquid reaction mixture comprising the chlorinated alkane and the chlorinated alkene , and extracting chlorinated alkene from the reaction mixture , wherein the concentration of the chlorinated alkene in the reaction mixture present in the dehydrochlorination zone is controlled such that the molar ratio of chlorinated alkene:chlorinated alkane is from 1:99 to 50:50.2. The process of claim 1 , wherein the molar ratio of chlorinated alkene:chlorinated alkane in the reaction mixture is from 5:95 to 50:50.3. The process of claim 1 , wherein the molar ratio of chlorinated alkene:chlorinated alkane in the reaction mixture is from 5:95 to 30:70.4. The process of claim 1 , wherein the chlorinated alkane contacted with the catalyst in the dehydrochlorination zone has a purity of about 98.5% or higher.5. The process of claim 1 , wherein the chlorinated alkene is extracted from the reaction mixture on a continuous basis.6. The process of claim 1 , wherein extraction of the chlorinated alkene from the reaction mixture is achieved by distillation.7. The process of claim 1 , wherein the chlorinated alkene is condensed from a gaseous mixture comprising the chlorinated alkene generated in the dehydrochlorination zone.8. The process of claim 7 , wherein the distillation is performed in distillation apparatus in fluid ...

AZEOTROPE OR AZEOTROPIC COMPOSITION CONTAINING PENTAFLUOROPROPANE AND WATER, AND METHOD FOR PRODUCING PENTAFLUOROPROPANE

An object of the present invention is to provide a method that can efficiently remove water contained in pentafluoropropane. Provided as a solution is a method comprising distilling a composition comprising pentafluoropropane and water to thereby extract pentafluoropropane with a water content higher than that of the composition as a first stream, and pentafluoropropane with a water content lower than that of the composition as a second stream. 1. An azeotropic or azeotrope-like composition comprising 1 ,1 ,1 ,2 ,2-pentafluoropropane (HFC-245cb) and water.2. An azeotropic or azeotrope-like composition comprising 1 ,1 ,1 ,2 ,3-pentafluoropropane (HFC-245eb) and water.3. The azeotropic or azeotrope-like composition according to claim 1 , wherein HFC-245cb and water are contained in an amount of 90 to 100 mass % relative to the entire composition.4. The azeotropic or azeotrope-like composition according to claim 2 , wherein HFC-245eb and water are contained in an amount of 90 to 100 mass % relative to the entire composition.5. A method for producing a composition comprising pentafluoropropane with a water content lower than that of a starting composition comprising pentafluoropropane and water claim 2 , the method comprising:(1) distilling the starting composition to thereby extract a pentafluoropropane-containing composition with a water content higher than that of the starting composition as a first stream, and a pentafluoropropane-containing composition with a water content lower than that of the starting composition as a second stream.6. The method according to claim 5 , wherein the distillation is performed within a pressure range of atmospheric pressure to 2 MPa.7. The production method according to claim 5 , further comprising:(2) cooling the composition of the first stream obtained in step (1) to induce liquid-liquid separation to form a phase A containing a larger amount of water and a phase B containing a larger amount of pentafluoropropane.8. The method ...

PURIFYING METHOD, PURIFYING APPARATUS, AND MANUFACTURING METHOD OF 2,3,3,3-TETRAFLUOROPROPENE

There is provided a method and an apparatus for efficiently obtaining 2,3,3,3-tetrafluoropropene with low contents of both organic impurities and water. The method for continuously purifying crude 2,3,3,3-tetrafluoropropene containing water and one or more organic impurities, the method including using an apparatus having a distillation column with X stages (3≦X, the stage closest to a column top is the first stage) and a unit for cooling and condensing a distillate; supplying the crude 2,3,3,3-tetrafluoropropene to an m-th stage (n+1≦m≦X, 2≦n≦X−1) of the distillation column, recirculating at least part of the distillate cooled and condensed in the unit for cooling and condensing to an h-th stage (1≦h≦n−1) of the distillation column; and taking out a liquid phase part of an n-th stage of the distillation column to obtain a purified product of 2,3,3,3-tetrafluoropropene. 1. A method for continuously purifying crude 2 ,3 ,3 ,3-tetrafluoropropene containing water and an organic impurity , the method comprising:using an apparatus having a distillation column with X stages (where “X” is an integer of 3 or larger, and the stage closest to a column top is the first stage) and a unit for cooling and condensing a distillate taken out from a column top of the distillation column;supplying the crude 2,3,3,3-tetrafluoropropene to an m-th stage (where “m” is an integer satisfying n+1≦m≦X and “n” is an integer satisfying 2≦n≦X−1) of the distillation column;recirculating at least part of the distillate cooled and condensed in the unit for cooling and condensing to an h-th stage (where “h” is an integer satisfying 1≦h≦n−1) of the distillation column; andtaking out a liquid phase part of an n-th stage of the distillation column to obtain a purified product of 2,3,3,3-tetrafluoropropene.2. The purifying method of 2 claim 1 ,3 claim 1 ,3 claim 1 ,3-tetrafluoropropene according to claim 1 ,wherein the organic impurity includes an organic compound having boiling point of from −40° C. to ...

Integrated process and methods of producing (e) 1-chloro-3,3,3-trifluoropropene

The present invention relates to methods, process, and integrated systems for economically producing (E)-1-chloro-3,3,3-trifluoropropene via vapor phase and/or liquid processes.

Process for the preparation of 2,3,3,3-tetrafluoropropene

The present invention provides a process for preparing 2,3,3,3-tetrafluoropropene from 1,1,1,2,3-pentachloropropane and/or 1,1,2,2,3-pentachloropropane, comprising the following steps: (a) catalytic reaction of 1,1,1,2,3-pentachloropropane and/or 1,1,2,2,3-pentachloropropane with HF into a reaction mixture comprising HCl, 2-chloro-3,3,3-trifluoropropene, 2,3,3,3-tetrafluoropropene, unreacted HF, and optionally 1,1,1,2,2-pentafluoropropane; (b) separating the reaction mixture into a first stream comprising HCl and 2,3,3,3-tetrafluoropropene and a second stream comprising HF, 2-chloro-3,3,3-trifluoropropene and optionally 1,1,1,2,2-pentafluoropropane; (c) catalytic reaction of the second stream into a reaction mixture comprising 2,3,3,3-tetrafluoropropene, HCl, unreacted 2-chloro-3,3,3-trifluoropropene, unreacted HF and optionally 1,1,1,2,2-pentafluoropropane and (d) feeding the reaction mixture of step (c) directly without separation to step (a).

Method for producing chloropropene and method for producing 2,3,3,3-tetrafluoropropene

This invention provides a method for stably producing 2,3,3,3-tetrafluoropropene for a long period of time wherein unreacted materials are reused after distillation without liquid-liquid separation to suppress catalyst deactivation. The method for producing 2,3,3,3-tetrafluoropropene comprises the step of reacting 1233xf or like chloropropene with hydrogen fluoride in the presence of a catalyst, the step of subjecting the reaction mixture obtained in the above step to distillation to separate the mixture into a first stream comprising 2,3,3,3-tetrafluoropropene as a main component and a second stream comprising unreacted hydrogen fluoride and organic matter containing unreacted chloropropene as main components, and the step of recycling the second stream to the above reaction, the distillation being performed under conditions in which the unreacted hydrogen fluoride and the organic matter containing the unreacted chloropropene do not undergo liquid-liquid separation at a portion of a distillation column from which the second stream is withdrawn.

METHOD FOR PRODUCING DIFLUOROETHYLENE

The present invention aims to provide an efficient method for obtaining a desired isomer of HFO-1132 from a composition comprising trans-1,2-difluoroethylene (HFO-1132(E)) and cis-1,2-difluoroethylene (HFO-1132(Z)). 1. A method for producing trans-1 ,2-difluoroethylene (HFO-1132(E)) and/or cis-1 ,2-difluoroethylene (HFO-1132(Z)) , comprising the step of:(1) supplying a composition comprising HFO-1132(E) and/or HFO-1132(Z) to a reactor filled with a catalyst to perform an isomerization reaction between the HFO-1132(E) and the HFO-1132(Z).2. A method for producing cis-1 ,2-difluoroethylene (HFO-1132(Z)) , comprising the step of:(1A) supplying trans-1,2-difluoroethylene (HFO-1132(E)) or a composition comprising HFO-1132(E) and HFO-1132(Z) to a reactor filled with a catalyst to perform an isomerization reaction between the HFO-1132(E) and the HFO-1132(Z).3. A method for producing HFO-1132(E) , comprising the step of:(1B) supplying HFO-1132(Z) or a composition comprising HFO-1132(E) and HFO-1132(Z) to a reactor filled with a catalyst to perform an isomerization reaction between the HFO-1132(E) and the HFO-1132(Z).4. The production method according to any one of to , the reaction product obtained in step (1), (1A), or (1B) comprises HFO-1132(E) and HFO-1132(Z), and', 'the method further comprises steps (2) and (3):, 'wherein'}(2) separating the reaction product obtained in step (1), (1A), or (1B) into a first stream comprising the HFO-1132(E) as a main component, and a second stream comprising the HFO-1132(Z) as a main component; and(3) recycling the first stream or the second stream obtained in step (2) to the reactor, to subject the first stream or the second stream to the isomerization reaction.5. The production method according to any one of to , further comprising the step of:(i) subjecting a halogenated ethane to a dehydrohalogenation reaction or a dehalogenation reaction to obtain a composition comprising HFO-1132(E) and HFO-1132(Z), 'the composition comprising HFO ...

HFO-1234ZE AND HFO-1234YF COMPOSITIONS AND PROCESSES FOR PRODUCING AND USING THE COMPOSITIONS

A fluoropropene composition comprising Z-1,3,3,3-tetrafluoropropene, E-1,3,3,3-tetrafluoropropene, 2,3,3,3-tetrafluoropropene, and optionally 1,1,1,3,3-pentafluoropropane wherein the 2,3,3,3-tetrafluoropropene being present in an amount of 0.001 to 1.0%. A method of producing the fluoropropene, methods for using the fluoropropene and the composition formed are also disclosed. 1. A fluoropropene composition comprising Z-1 ,3 ,3 ,3-tetrafluoropropene , E-1 ,3 ,3 ,3 ,-tetrafluoropropene , 2 ,3 ,3 ,3-tetrafluoropropene , and optionally 1 ,1 ,1 ,3 ,3-pentafluoropropane wherein the 2 ,3 ,3 ,3-tetrafluoropropene being present in an amount of 0.001 to 1.0 mol %.2. The composition of claim 1 , wherein the 2 claim 1 ,3 claim 1 ,3 claim 1 ,3-tetrafluoropropene is present in an amount of 0.1 to 0.9 mol %.3. The composition of claim 1 , wherein the 2 claim 1 ,3 claim 1 ,3 claim 1 ,3-tetrafluoropropene is present in an amount of 0.2 to 0.4 mol %.4. The composition of claim 1 , wherein the 2 claim 1 ,3 claim 1 ,3 claim 1 ,3-tetrafluoropropene is present in an amount of 0.3 to 0.4 mol %.5. The composition of claim 1 , wherein the fluoropropene composition additionally comprises one or more of R-143a claim 1 , R-152a claim 1 , TFP claim 1 , R-1233xf claim 1 , R-1233zd(E) claim 1 , R-1233zd(Z) 1224yd claim 1 , 1224zc claim 1 , 1326mxz claim 1 , 113 claim 1 , 32 claim 1 , 23 claim 1 , trifluoro propyne claim 1 , 356mff claim 1 , 1326mxz claim 1 , HFC-245fa and HFC-245cb.6. The composition of claim 5 , wherein the sum total of the amounts of R-143a claim 5 , R-152a claim 5 , TFP claim 5 , R-1233xf claim 5 , R-1233zd(E) claim 5 , R-1233zd(Z) claim 5 , 1224yd claim 5 , 1224zc claim 5 , 1326mxz claim 5 , 113 claim 5 , 32 claim 5 , 23 claim 5 , trifluoro propyne claim 5 , 356mff claim 5 , 1326mxz claim 5 , HFC-245fa and HFC-245cbis between 0.001 mole percent and 2 mole percent claim 5 , based on the total fluoropropene composition.7. The composition of claim 1 , wherein the fluoropropene ...

Method for producing haloolefin compound and method for removing stabilizer

The present invention provides a method for producing a fluorine-containing haloolefin compound, the method easily inhibiting catalyst deactivation, and the method being capable of inhibiting a decrease in conversion and selectivity in the reaction, even when the reaction is continued for a long period of time. The present invention is a method for producing a fluorine-containing haloolefin compound via a step of fluorinating a C3 halogenated hydrocarbon. The method comprises a step of removing a stabilizer contained in the C3 halogenated hydrocarbon before the fluorination step.

PROCESS FOR PRODUCING A CHLORINATED C3-6 ALKANE

Disclosed is a process for producing a chlorinated C3-6 alkane comprising providing a reaction mixture comprising an alkene and carbon tetrachloride in a principal alkylation zone to produce chlorinated C3-6 alkane in the reaction mixture, and extracting a portion of the reaction mixture from the principal alkylation zone, wherein: 131-. (canceled)32. A composition comprising chlorinated Calkane comprising:{'sub': '3-6', 'about 99.0% or more of the chlorinated Calkane;'}{'sub': '3-6', 'less than about 2000 ppm chlorinated alkane impurities, said impurities other than the chlorinated Calkane;'}less than about 2000 ppm chlorinated alkene compounds;less than about 2000 ppm oxygenated organic compounds;less than about 2000 ppm brominated compounds;less than about 1000 ppm of water;less than about 500 ppm of a metallic catalyst; andless than about 500 ppm of a catalyst promoter.33. The composition of claim 32 , wherein the Cchloroalkane is 1 claim 32 ,1 claim 32 ,1 claim 32 ,3-tetrachloropropane.34. The composition of claim 33 , comprising less than about 500 ppm of one or more of a compound selected from a group: trichloromethane claim 33 , 1 claim 33 ,2-dichloroethane claim 33 , 1-chlorobutane claim 33 , 1 claim 33 ,1 claim 33 ,1-trichloropropane claim 33 , tetrachloroethene claim 33 , 1 claim 33 ,1 claim 33 ,3-trichloroprop-1-ene claim 33 , 1 claim 33 ,1 claim 33 ,1 claim 33 ,3 claim 33 ,3-pentachloropropane claim 33 , 1 claim 33 ,1 claim 33 ,1 claim 33 ,2 claim 33 ,3-pentachloropropane claim 33 , hexachloroethane claim 33 , 1 claim 33 ,1 claim 33 ,1 claim 33 ,5-tetrachloropentane claim 33 , 1 claim 33 ,3 claim 33 ,3 claim 33 ,5-tetrachloropentane claim 33 , tributylphosphate claim 33 , chlorinated alkanol and chlorinated alkanoyl compounds.35. A method of synthesizing of a halogenated alkene or halogenated alkane claim 32 , comprising providing a feedstock of the composition according to .36. The method of claim 35 , wherein the halogenated alkene or halogenated ...

PROCESS AND APPARATUS FOR HEAT RECOVERY IN VINYL CHLORIDE MONOMER PLANTS OR IN INTEGRATED VINYL CHLORIDE MONOMER OR POLYVINYL CHLORIDE PLANTS

Disclosed is a process and apparatus for heat recovery in vinyl chloride monomer manufacturing plants or in integrated vinyl chloride monomer/polyvinyl chloride manufacturing plants. A process for capture and use of excess heat recovered in the production of vinyl chloride includes distillatively purifying DCE in a high-boilers column, using a heat exchanger to capture thermal energy from a purified DCE vapor stream from the high-boilers column, generating low pressure steam from the captured thermal energy, returning condensed DCE vapors to the high-boilers column, and heating parts of the plant with the generated low pressure steam. 112.-. (canceled)13. A process for the capture and use of excess heat recovered during the production of vinyl chloride by the thermal cleavage of 1 ,2-dichloroethane in a vinyl chloride manufacturing complex that incorporates distillative purification of 1 ,2-dichloroethane using at least one high-boilers column in which substances boiling at temperatures higher than the boiling point of 1 ,2-dichloroethane are removed , the process comprising:distillatively purifying 1,2-dichloroethane by boiling 1,2-dichloroethane at temperatures between 120-150° C. in a high-boilers column of the vinyl chloride manufacturing complex to create a 1,2-dichloroethane vapor stream;capturing thermal energy from at least a portion of a distillatively purified 1,2-dichloroethane vapor stream, by at least one heat exchanger associated with at least one of a plant component dedicated to producing 1,2-dichloroethane, a downstream plant component dedicated to producing vinyl chloride, or a downstream plant component dedicated to producing polyvinyl chloride;generating low-pressure steam from the thermal energy captured by the heat exchanger;returning the 1,2-dichloroethane vapor into the high-boilers column following a condensation thereof; andheating selected parts of the plant with the generated low pressure steam.14. The process of claim 13 , wherein the at ...

METHOD FOR MAKING 1,1,3,3-TETRACHLOROPROPENE

A process for the manufacture of 1,1,3,3-tetrachloropropene, the process comprising dehydrochlorinating 1,1,1,3,3-pentachloropropane. 1. A process for the manufacture of 1 ,1 ,3 ,3-tetrachloropropene , the process comprising:dehydrochlorinating 1,1,1,3,3-pentachloropropane, where said step of dehydrochlorinating 1,1,1,3,3-pentachloropropane takes place in the presence of an oxidizing agent and a Lewis acid.2. The process of claim 1 , where the Lewis acid is ferric chloride.3. The process of claim 2 , where the oxidizing agent is chlorine.4. The process of claim 3 , where said step of dehydrochlorinating takes place in the presence of from about 30 to about 10 claim 3 ,000 ppm ferric chloride.5. The process of claim 4 , where said step of dehydrochlorinating takes place in the presence of from about 100 ppm to about 3 wt % chlorine.6. The process of claim 5 , where said step of dehydrochlorinating includes reactive distillation.7. The process of claim 1 , where said step of dehydrochlorinating takes place at a pressure of from about 0.05 atmospheres to about 0.5 atmospheres.8. The process of claim 1 , where said step of dehydrochlorinating includes reactively distilling a crude 1 claim 1 ,1 claim 1 ,1 claim 1 ,3 claim 1 ,3-pentachloropropane stream.9. The process of claim 8 , where the crude 1 claim 8 ,1 claim 8 ,1 claim 8 ,3 claim 8 ,3-pentachloropropane stream includes 1 claim 8 ,1 claim 8 ,1 claim 8 ,3 claim 8 ,3-pentachloropropane claim 8 , carbon tetrachloride claim 8 , vinyl chloride claim 8 , iron claim 8 , and at least one of amines claim 8 , nitriles claim 8 , amides claim 8 , and phosphates.10. The process of claim 1 , where said step of dehydrochlorinating includes reactively distilling a partially purified 1 claim 1 ,1 claim 1 ,1 claim 1 ,3 claim 1 ,3-pentachloropropane stream.11. The process of claim 10 , where said partially purified 1 claim 10 ,1 claim 10 ,1 claim 10 ,3 claim 10 ,3-pentachloropropane stream includes 1 claim 10 ,1 claim 10 ,1 claim 10 , ...

PROCESS FOR THE PREPARATION OF OLEFIN CONTAINING FLUORINE

The present invention relates to a process for preparation of olefins containing fluorine. 19.-. (canceled)10. A process for preparation of 2 ,3 ,3 ,3-tetrafluoropropene comprising using a mixture of methyl chloride and at least one suitable other starting material and obtaining 2 ,3 ,3 ,3-tetrafluoropropene.11. The process of comprising:a) providing a mixture of methyl chloride to chlorodifluoromethane in a molar ratio of 3.2 to 4.7 in a reactor;b) providing and contacting heat medium with step a) mixture to form second mixture comprising 2,3,3,3-tetrafluoropropene and methyl chloride;c) drying the second mixture of step b) to obtain anhydrous second mixture;d) contacting the anhydrous second mixture of step c) with molecular sieve of size 3 Å to 5 Å to obtain third mixture free of methyl chloride; ande) isolating 2,3,3,3-tetrafluoropropene from third mixture of step d).12. The process of claim 11 , wherein the reactor is heated at a temperature in range of 550° C. to 900° C. or providing a steam medium to the mixture of methyl chloride and chlorodifluoromethane to obtain the temperature range of 550° C. to 900° C. or both to obtain the step b) second mixture.13. The process of claim 11 , wherein the step c) anhydrous second mixture is obtained by passing the second mixture through water quencher claim 11 , caustic scrubber claim 11 , sulphuric scrubber claim 11 , alumina balls or calcium chloride.14. The process of comprising:a) providing a mixture of methyl chloride and chlorodifluoromethane, said mixture is either premixed or added separately;b) providing and contacting heat medium with step a) mixture to form second mixture comprising 2,3,3,3-tetrafluoropropene, methyl chloride and fluorinated compounds having boiling point in the range of −14 to −90° C.;c) drying the second mixture of step b) to obtain anhydrous second mixture;d) subjecting the anhydrous second mixture of step c) to distillation to obtain anhydrous third mixture comprising methane, ...