СПОСОБ ТЕРМИЧЕСКОГО РАСЩЕПЛЕНИЯ УГЛЕВОДОРОДОВ, В ЧАСТНОСТИ, ДЛЯ ПОЛУЧЕНИЯ ОЛЕФИНОВ, И УСТАНОВКА ДЛЯ ОСУЩЕСТВЛЕНИЯ СПОСОБА

Данное изобретение относится к способу термического расщепления углеводородов, в частности, для получения олефинов. Способ термического расщепления углеводородов, в частности, для получения олефинов ведут в печи для расщепления смеси углеводородов и водяного пара при нагреве до 750 - 900oС и образующийся при этом содержащий водород крекинг-газ по времени сразу же после нагревания охлаждают в охладителе для крекинг-газа до температуры приблизительно 650oС, при наличии тяжелых продуктов посредством резкого охлаждения дополнительно охлаждают и после этого посредством отделения освобождают от тяжелого масла и бензина. Из содержащего легкие продукты крекинг-газа посредством резкого охлаждения удаляют водяной пар, уплотняют при помощи компрессора до по меньшей мере 20 бар, освобождают посредством высушивания от остатков воды, охлаждают в установке глубокого охлаждения и направляют для отделения легких продуктов в несколько ректификационных колонн. Если смотреть в направлении потока технологической ...

Способ и установка для получения продуктов сырой нефти

Hydrocarbon separation

USE OF LOW PRESSURE DISTILLATE AS ABSORBER OIL IN ONE FCC RÜCKGEWINNUNGSSEKTION

Separation sequence for hydrocarbons from a gentle thermal cleavage

The invention describes a method for separating hydrocarbons in an installation for generating hydrocarbons from a hydrocarbon-containing charge by cleavage, wherein the product gas of the cleavage, which is produced as the raw gas (1) and which contains gaseous hydrocarbons is compressed (2a) and dried (5a,5b), and supplied as charge material into a separation stage (hereafter referred to as front end C3/C4 separation), in which the raw gas (1) is separated into a hydrocarbon fraction consisting of hydrocarbons having a maximum of 3 carbon atoms (15) and a hydrocarbon fraction consisting of hydrocarbons having at least 4 carbon atoms (17), wherein the front end C3/C4 separation comprises, in terms of process technology, a C4 absorber (6) and a depropanizer (8), wherein a hydrocarbon fraction consisting of hydrocarbons having a maximum of 3 carbon atoms is obtained as a gaseous overhead product (15) of the C4 absorber (6), and wherein a liquid hydrocarbon fraction consisting of hydrocarbons ...

Chemical absorption process for recovering olefins from cracked gases

HYDROCARBON GAS PROCESSING

A process for the recovery of ethane, ethylene, propane, propylene and heavier hydrocarbon components from a hydrocarbon gas stream (31) is disclosed. In recent years, the preferred method of separating a hydrocarbon gas stream (31) generally includes supplying at least portions of the gas stream (31) to a fractionation tower (17) having at least one reboiler, and often one or more side reboilers, to supply heat to the column by withdrawing and heating some of the tower liquids (40, 42) to produce stripping vapors that separate the more volatile components from the desired components. The reboiler and side reboilers (if any) are typically integrated into the feed stream cooling scheme (10) to provide at least a portion of the refrigeration needes to condense the desired components for subsequent fractionation in the distillation column (17). In the process disclosed, the tower reboiling scheme is modified to use one or more tower liquid distillation streams (40) from a point higher in the ...

METHOD FOR FRACTIONATING A CRACKED GAS FLOW IN ORDER TO OBTAIN AN ETHYLENE-RICH CUT AND A FUEL FLOW, AND ASSOCIATED FACILITY

Procédé de fractionnement d'un courant de gaz craqué pour obtenir une coupe riche en éthylène et un courant de combustible, et installation associée. Ce procédé comporte l'introduction d'un courant (140) de gaz craqué aval issu d'un échangeur thermique aval (58) dans un séparateur aval (60) et la récupération, en tête du séparateur aval (60), d'un courant (144) gazeux de combustible à haute pression. Le procédé comporte le passage du courant (144) de combustible à travers l'échangeur aval (58) et un échangeur intermédiaire (50, 54) pour former un courant (146) combustible haute pression réchauffé, la détente du courant (146) de combustible haute pression réchauffé dans au moins un premier appareil (68) de détente dynamique et le passage du courant (148) de combustible partiellement détendu issu de l'échangeur intermédiaire (50, 54) dans un deuxième appareil de détente dynamique (70) pour former un courant (152) de combustible détendu. Le courant (152) de combustible détendu issu du deuxième ...

IMPROVED DISTILLATION SEQUENCE FOR THE PURIFICATION AND RECOVERY OF HYDROCARBONS

This invention is an improved distillation sequence for the separation and purification of ethylene from a cracked gas. A hydrocarbon feed enters a C2 distributor column. The top of the C2 distributor column is thermally coupled to an ethylene distributor column, and the bottoms liquid of a C2 distributor column feeds a deethanizer column. The C2 distributor column utilizes a conventional reboiler. The top of the ethylene distributor is thermally coupled with a demethanizer column, and the bottoms liquid of the ethylene distributor feeds a C2 splitter column. The ethylene distributor column utilizes a conventional reboiler. The deethanizer and C2 splitter columns are also thermally coupled and operated at a substantially lower pressure than the C2 distributor column, the ethylene distributor column, and the demethanizer column. Alternatively, a hydrocarbon feed enters a deethanizer column. The top of the deethanizer is thermally coupled to an ethylene distributor column, and the ethylene distributor column utilizes a conventional reboiler. The top of the ethylene distributor column is thermally coupled with a demethanizer column, and the bottoms liquid of the ethylene distributor column feeds a C2 splitter column. The C2 splitter column operates at a pressure substantially lower than the ethylene distributor column, the demethanizer column, and the deethanizer column.

METHOD OF FRACTIONATION OF FLOW CRACKING GAS FOR PRODUCTION OF FRACTION, RICH ETHYLENE, AND FUEL FLOW AND PLANT FOR ITS REALIZATION

STAGE AND SYSTEM FOR COMPRESSION CRACKING - GAS

PROCESS FOR TREATING A STREAM OF CRACKED GAS COMING FROM A HYDROCARBON PYROLYSIS PLANT, AND ASSOCIATED PLANT

METHOD OF FRACTIONING THE CRACKED GAS FLOW TO OBTAIN FRACTION, ENRICHED WITH ETHYLENE, AND THE FUEL FLOW, AND THE INSTALLATION THEREFOR

METHOD OF TREATMENT OF FLOW CRACKING GAS, OBTAINED ON PLANT PYROLYSIS OF HYDROCARBONS, AND INSTALLATION FOR ITS REALIZATION

METHOD OF SEPARATING HYDROCARBON MIXTURE, SEPARATION SYSTEM, STEAM CRACKING AND METHOD OF UPDATING SYSTEM STEAM CRACKING

PROCEEDED OF TREATMENT Of a GAS CURRENT CRACKS RESULTING From an INSTALLATION FROM HYDROCARBON PYROLYSIS AND ASSOCIATED INSTALLATION.

PROCEEDED OF FRACTIONATION Of a GAS CURRENT CRACKS TO OBTAIN a CUT RICH IN ETHYLENE AND a FUEL CURRENT, AND ASSOCIATED INSTALLATION.

Hydrocarbon gas processing

A process for the recovery of ethane, ethylene, propane, propylene and heavier hydrocarbon components from a hydrocarbon gas stream is disclosed. In recent years, the preferred method of separating a hydrocarbon gas stream generally includes supplying at least portions of the gas stream to a fractionation tower having at least one reboiler, and often one or more side reboilers, to supply heat to the column by withdrawing and heating some of the tower liquids to produce stripping vapors that separate the more volatile components from the desired components. The reboiler and side reboilers (if any) are typically integrated into the feed stream cooling scheme to provide at least a portion of the refrigeration needed to condense the desired components for subsequent fractionation in the distillation column. In the process disclosed, the tower reboiling scheme is modified to use one or more tower liquid distillation streams from a point higher in the column than is used in the conventional reboiling ...

СПОСОБ ОБРАБОТКИ УГЛЕВОДОРОДНОГО СЫРЬЯ, СОДЕРЖАЩЕГО ВОДОРОД И УГЛЕВОДОРОДЫ C1-C4

Изобретение относится к способу обработки углеводородного сырья, содержащего водород и углеводороды, в том числе углеводороды C-C, в котором: a) разделяют углеводородное сырье на газовую фазу (6), содержащую в основном водород, и жидкую фазу (4), содержащую углеводороды; b) осуществляют первый этап повторного контактирования сначала газовой фазы, полученной на этапе a)с рециркулирующим газовым потоком (23), полученным на этапе e), чтобы извлечь газ (10), который контактирует с жидкой фазой (4), полученной на этапе a), при температуре меньше или равной 55°C; c) разделяют поток с повторного контактирования на этапе b) на газовую фазу (15), обогащенную водородом, и жидкую фазу (16); d) осуществляют второй этап повторного контактирования жидкой фазы (16), выходящей с этапа c), с газовой фазой (21), выходящей с этапа g), при температуре меньше или равной 55°C; e) разделяют поток с повторного контактирования на этапе d) на газовую фазу (23), которую возвращают на этап b), и жидкую фазу (24), ...

PROCEDURE FOR THE SEPARATION FROM HYDROCARBONS

PROCESS FOR OXIDIZING ONE OR MORE THIOL COMPOUNDS

A process and apparatus for oxidizing thiol compounds from an alkaline stream. The process includes passing a thiol rich alkaline stream and an oxygen containing gas to a low pressure oxidizing zone to oxidize at least a portion of the thiol compounds to disulfide compounds. A liquid stream comprising the alkali containing the disulfide compounds is passed through a pump to increase the pressure and form a pressurized alkaline stream. The pressurized alkaline stream and a sulfur lean liquid light hydrocarbon stream are introduced to a high pressure disulfide separation vessel to form a sulfur lean alkaline stream and a sulfur rich liquid light hydrocarbon stream.

METHOD AND APPARATUS FOR DEHYDRATION OF A HYDROCARBON GAS

A method of dehydrating a hydrocarbon gas stream comprises stripping water from a liquid desiccant stream using a water-undersaturated portion of the gas stream, drying the gas stream to extract the stripped water, and then further drying the partially-dried gas stream using the stripped desiccant to achieve a low water content level in the gas stream for pipeline transportation. In one embodiment, the liquid desiccant is supplied by a regeneration facility at a remote location and the liquid desiccant is returned to the regeneration facility for regeneration after drying the gas. In another embodiment, the regeneration of the desiccant is performed locally whereby the liquid desiccant is, after drying the gas, stripped again of water and reused locally.

TRANSFER LINE

A transfer line between the outlet of a steam cracker and the inlet for the quench system has metallic or ceramic inserts having a pore size form about 0.001 to 0.5 microns inside the line forming a gas tight barrier with the inner surface of the line and having a vent for the resulting gas tight pocket are used to separate H2, CH4, CO and CO2 from cracked gases reducing the load on the down-stream separation train of the steam cracker.

HYDROCARBON SEPARATION

A process for the separation of propylene from an input stream of C3 hydrocarbons containing propylene, possibly C4 and/or higher hydrocarbons, and MAPD (methyl acetylene and/or propadiene), comprises subjecting said input steam to fractional distillation to separate the propylene as an overhead stream leaving a bottoms stream containing said MAPD and any C4 and/or higher hydrocarbons. In order to avoid the need to slip substantial amounts of valuable propylene into the bottoms stream to maintain the concentration of MAPD in the bottoms stream at a safe level, a propane-containing stream is added to the input stream of C3 hydrocarbons so that the bottoms stream contains a substantial amount of propane. So that the propylene content of the bottoms stream can be maintained at below 10 % by weight, the amount of propane added to the input stream is such that the weight of propane, plus any propylene and C4 and/or higher hydrocarbons, in said bottoms stream is greater than the total weight ...

Method for separating and purifying hydrogen from refinery tail gas

The Flash Point Control System

PROCESS FOR THE RECOVERY OF AN ETHYLENE AND PROPYLENE CONTAINING STREAM FROM A CRACKED GAS RESULTING FROM HYDROCARBON CRACKING

Process for the recovery of an ethylene and propylene containing stream from a cracked gas resulting from cracking a hydrocarbon stream, wherein the cracked gas is treated in an absorptive demethanizer with a C4/C5 solvent at a temperature between -10 °C and - 40 °C to free the cracked gas from methane and hydrogen gas, whereafter the remaining stream is treated by distillation in a distillation unit to obtain a C4 /C5 containing stream and the ethylene and propylene containing stream; whereafter the C4/C5 stream is treated with a hydrogen containing stream in a hydrogenation unit, whereafter a part of the hydrogenated C4/C5 stream is cooled to a temperature between -10 °C and -40°C and recycled to the absorptive demethanizer and a part of the hydrogenated C4 /C5 stream is separated. © KIPO & WIPO 2007 ...

Gas-solid separator

A gas-solid separator has: an inner cylinder 10 having a closed lower end 11 and an opened upper end 1, and extending in a vertical direction; and an outer cylinder 2 that coaxially covers the inner cylinder 10 from the outside and has a gas vent port 6 formed on the upper end side of the inner cylinder and communicating with an exterior, wherein a plurality of axially extending long holes 4 are formed on a side surface on the lower end 11 side of the inner cylinder 10 in a circumferential direction, one of long side edge parts of each of the long holes 4 is provided with a guide blade 5 that protrudes outward and is inclined circumferentially so as to cover the long hole 4, and a part between the long holes 4 of the inner cylinder 10 is concaved in a center direction of the inner cylinder 10.

СПОСОБ ОБРАБОТКИ ПОТОКА ПРОДУКТА

... 1. Способ обработки потока продукта процесса автотермического крекинга, указанный поток продукта включает один или более олефинов, водород, монооксид углерода, диоксид углерода и один или более оксигенатов, и в котором оксигенаты присутствуют в потоке продукта до обработки при общей концентрации, составляющей от 100 до 5000 ч./млн. по массе, указанный способ включает: ! (а) контактирование потока продукта с водным потоком, включающим по крайней мере одно соединение, выбранное из веществ, которые можно представить формулами: ! , ! , ! в которых R1 выбирают из H и содержащих углерод заместителей; ! R2 представляет собой H; ! R3 представляет собой кетильную группу формулы C(O)NR4R5, в которой R4 представляет собой H или алкил, a R5 представляет собой H, алкил или NH2; с целью селективного удаления оксигенатов в присутствии диоксида углерода, и ! (б) последующее пропускание обработанного с целью удаления оксигенатов потока из стадии (а) в системе удаления диоксида углерода на основе амина с ...

УДАЛЕНИЕ ПАРАФИНА ИЗ ПОТОКОВ, ИМЕЮЩИХ В СВОЕМ СОСТАВЕ С4

Предложен способ производства 1-бутена, включающий: подачу потока, имеющего в своем составе С, в технологический процесс удаления парафина для образования потока, обогащенного олефинами, в котором технологический процесс удаления парафина выбирают из: (a) экстракционной перегонки, использующей растворитель, содержащий органический нитрил; (b) пропускания потока, имеющего в своем составе С, через полупроницаемую мембрану; и (c) их сочетаний; и изомеризацию по меньшей мере части 2-бутена, присутствующего в потоке, обогащенном олефинами, в 1-бутен для образования потока продукта изомеризации, содержащего по меньшей мере 80 мас.% 1-бутена; при этом поток, имеющий в своем составе C, содержит изобутилен, 1-бутен, 2-бутен, n-бутан и изобутан; при этом поток, имеющий в своем составе С, содержит от 40 мас.% до 70 мас.% олефинов и от 30 мас.% до 85 мас.% парафинов; при этом технологический процесс удаления парафина выбирают из экстракционной перегонки, где растворитель включает ацетонитрил и характеризуется ...

СПОСОБ И УСТРОЙСТВО ДЛЯ ИЗВЛЕЧЕНИЯ C2-C4 КОМПОНЕНТОВ В МЕТАНСОДЕРЖАЩЕМ ПРОМЫШЛЕННОМ ГАЗЕ

Настоящее изобретение описывает способ для извлечения C2 компонентов в метансодержащем промышленном газе. Способ включает: (1) охлаждение сжатого метансодержащего промышленного газа и осуществление разделения газ-жидкость; (2) абсорбцию C2 компонентов в газовой фазе с использованием абсорбент с получением абсорбционно-обогащенной жидкости; (3) возвращение абсорбционно-обогащенной жидкости для сжатия на стадию (1) или смешивание абсорбционно-обогащенной жидкости с жидкой фазой, полученной на стадии (1), с получением смешанной жидкости и уменьшение давления смешанной жидкости или абсорбционно-обогащенной жидкости; (4) осуществление десорбции метана в потоке с пониженным давлением с получением обогащенного абсорбента или осуществление второго разделения газ-жидкость в потоке с пониженным давлением с последующей десорбцией метана на второй жидкой фазе с получением обогащенного абсорбента; и (5) десорбцию и выделение обогащенного абсорбента с получением обедненного абсорбента и обогащенного ...

МОДУЛЬНЫЙ СПОСОБ ПЕРЕРАБОТКИ СЫРОЙ НЕФТИ

Изобретение относится к способу переработки потока сырой нефти, который включает фракционирование потока сырой нефти в колонне для сырой нефти, чтобы получить верхний дистиллятный поток в линии верхнего погона и отбензиненный неочищенный поток в линии донного продукта при точке отсечки между 288 и 371°C (550° и 700°F); охлаждение верхнего дистиллятного потока и конденсацию верхнего дистиллятного потока, чтобы получить суммарный дистиллятный поток и верхний газообразный поток; и теплообмен отбензиненного неочищенного потока с потоком сырой нефти; где все сырье, поступившее в колонну, при фракционировании выходит по линии верхнего погона или линии донного продукта. Модульная дистилляционная колонна обеспечивает способ и устройство для дистилляции и переработки сырой нефти. Сырую нефть можно нагреть и затем разделить в дистилляционной колонне сырой нефти только на два жидких продукта. Разделение между легкими и тяжелыми продуктами можно регулировать с помощью скорости потока дистиллятного ...

УСОВЕРШЕНСТВОВАННЫЙ СПОСОБ ДИСТИЛЛЯЦИИ ДЛЯ ОЧИСТКИ И ВОССТАНОВЛЕНИЯ УГЛЕВОДОРОДОВ

... 1. Способ разделения и восстановления углеводородных компонентов, включающий ввод питающей углеводородной смеси, содержащей водород, метан, этан, этилен, пропан, пропилен и, в общем случае, более тяжелые компоненты, в первую разделительную колонну для получения первого верхнего потока и первого нижнего потока; ввод первого верхнего потока во вторую разделительную колонну для получения второго верхнего потока и второго нижнего потока; орошение первой разделительной колонны жидкостью, стекающей из второй разделительной колонны; повторное нагревание первой разделительной колонны с помощью ребойлерного теплообменника; ввод первого нижнего потока в третью разделительную колонну для получения третьего верхнего потока и третьего нижнего потока; ввод второго верхнего потока в четвертую разделительную колонну для получения четвертого верхнего потока и четвертого нижнего потока; орошение второй разделительной колонны жидкостью, стекающей из четвертой разделительной колонны; повторное нагревание второй ...

VERWENDUNG VON NIEDERDRUCK-DESTILLAT ALS ABSORBERÖL IN EINER FCC-RÜCKGEWINNUNGSSEKTION

PROCEDURE AND PLANT FOR THERMAL SPLITTING OF HYDROCARBONS, IN PARTICULAR FOR THE PRODUCTION OF OLEFINEN

OLEFINREINIGUNG OF ACETYL NICHES CONNECTIONS AND ADSORBENT RECOVERY

IMPROVED DISTILLATION SEQUENCE FOR THE PURIFICATION AND RECOVERY OF HYDROCARBONS

This invention is an improved distillation sequence for the separation and purification of ethylene from a cracked gas. A hydrocarbon feed enters a C2 distributor column. The top of the C2 distributor column is thermally coupled to an ethylene distributor column, and the bottoms liquid of a C2 distributor column feeds a deethanizer column. The C2 distributor column utilizes a conventional reboiler. The top of the ethylene distributor is thermally coupled with a demethanizer column, and the bottoms liquid of the ethylene distributor feeds a C2 splitter column. The ethylene distributor column utilizes a conventional reboiler. The deethanizer and C2 splitter columns are also thermally coupled and operated at a substantially lower pressure than the C2 distributor column, the ethylene distributor column, and the demethanizer column. Alternatively, a hydrocarbon feed enters a deethanizer column. The top of the deethanizer is thermally coupled to an ethylene distributor column, and the ethylene ...

PROCESS FOR THE TREATMENT OF A PRODUCT STREAM

The present invention relates to a process for the treatment of a product stream, more specifically of a product stream from an autothermal cracking process, said product stream comprising one or more olefins, hydrogen, carbon monoxide, carbon dioxide and one or more oxygenates, said process comprising contacting the product stream with at least one compound selected from those represented by formulas: (1) H2N-OR1, and (2) H2N-NR2R3, where: R1, R2 and R3 may each be independently selected from H and carbon containing substituents.

SEPARATION SEQUENCE FOR HYDROCARBONS FROM A GENTLE THERMAL CLEAVAGE

Process for the treatment of a product stream

Process for treating a product stream typically from an autothermal cracking process, the product stream comprising one or more olefins, hydrogen, carbon monoxide, carbon dioxide and one or more oxygenates, by contacting the product stream with at least one compound selected from (1) H2NOR1, and (2) H2NNR2R3, where R1, R2 and R3 may each be independently selected from H and carbon-containing substituents.

Method and plant for obtaining crude oil products

A method for obtaining crude oil products is proposed in which a gaseous stream (d) is formed from a first crude oil stream (b) and the gaseous stream (d) is at least partially subjected to a steam cracking process (1) in which a cracked gas stream (e) is produced which is at least partially quenched with a liquid hydrocarbon stream (f), thereby forming a quenching effluent (g). It is provided that at least part of the quenching effluent (g) is used to form a separation feed and that the separation feed is separated by distillation (5, 8) together with a second crude oil stream (c), forming distillation effluents (h, i, k, p, r). The separation feed is formed so that it contains hydrocarbons having one, two, three, four or more carbon atoms contained in the quenching effluent (g) and/or hydrocarbons formed from such hydrocarbons. The invention also relates to an apparatus (100) configured to carry out the method.

СПОСОБ ПОЛУЧЕНИЯ УГЛЕВОДОРОДНЫХ ПРОДУКТОВ

Method for the separation of hydrocarbons in a plant for producing hydrocarbon from a hydrocarbon-containing element by splitting, comprises compressing and drying the product gas of splitting containing gaseous hydrocarbon material

The method for the separation of hydrocarbons in a plant for producing hydrocarbon from a hydrocarbon-containing element by splitting (1), comprises compressing and drying the product gas of splitting containing gaseous hydrocarbon material emerging as raw gas (2) and then supplying as feedstock in a separation zone in which the raw gas is separated into a hydrocarbon fraction from hydrocarbon with maximum 3 carbon atoms, and a hydrocarbon fraction from hydrocarbon with 4 carbon atoms. The front end of C 3/C 4-separation consists of C4-absorber (4) and a column. The method for the separation of hydrocarbons in a plant for producing hydrocarbon from a hydrocarbon-containing element by splitting (1), comprises compressing and drying the product gas of splitting containing gaseous hydrocarbon material emerging as raw gas (2) and then supplying as feedstock in a separation zone in which the raw gas is separated into a hydrocarbon fraction from hydrocarbon with maximum 3 carbon atoms, and a ...

PROCESS AND APPARATUS FOR PROCESSING A HYDROCARBON GAS STREAM

A process for separating a mixed or raw gas feed to produce a dry gas product and a hydrocarbon liquid product is provided. The process comprises scrubbing heavier hydrocarbon components from the gas feed to produce a lighter ends gas stream and a heavier ends liquid stream; cooling the lighter ends gas stream and separating the cooled lighter ends gas stream into a cold liquid stream and the dry gas product; and using the cold liquid stream to assist in scrubbing the heavier hydrocarbon components from the gas feed.

CRYOGENIC SEPARATION

A process for separating a hydrocarbon mixture containing an alkene, a corresponding alkane having the same number of carbon atoms as the alkene and at least one heavier hydrocarbon component comprises the steps of: a) feeding the hydrocarbon mixture to a first distillation tower (40) having an upper reflux stage; b) recovering a first overhead vapor stream (40V) rich in alkane and alkene from the first distillation tower (40) and passing said overhead vapor stream (40V) to a middle distillation stage of a second distillation tower (50); c) recovering a second overhead vapor stream (50) rich in alkene from the second distillation tower (50); d) adiabatically compressing the second overhead vapor stream (50V) and passing said compressed vapor to a reboiler stage (50B) of the second distillation tower (50) to cool and condense the compressed vapor and heat a liquid reboiler stream.

Process for the treatment of a product stream

The present invention relates to a process for the treatment of a product stream, more specifically of a product stream from an autothermal cracking process, the product stream comprising one or more olefins, hydrogen, carbon monoxide, carbon dioxide and one or more oxygenates, the process comprising contacting the product stream with at least one compound selected from those represented by formulas: (1) H2N-OR1, and (2) H2N-NR2R3, where: R1, R2 and R3 may each be independently selected from H and carbon containing substituents.

METHOD OF TREATING A HYDROCARBON FEEDSTOCK COMPRISING HYDROGEN AND HYDROCARBONS IN C1 HAS C4.

Olefin recovery from olefin-hydrogen mixtures method

Chemical absorption process for recovering olefins from cracked gases

SEPARATION SEQUENCE FOR HYDROCARBONS FROM A GENTLE THERMAL CLEAVAGE

The invention describes a method for separating hydrocarbons in an installation for generating hydrocarbons from a hydrocarbon-containing charge by cleavage, wherein the product gas of the cleavage, which is produced as the raw gas (1) and which contains gaseous hydrocarbons is compressed (2a) and dried (5a,5b), and supplied as charge material into a separation stage (hereafter referred to as front end C3/C4 separation), in which the raw gas (1) is separated into a hydrocarbon fraction consisting of hydrocarbons having a maximum of 3 carbon atoms (15) and a hydrocarbon fraction consisting of hydrocarbons having at least 4 carbon atoms (17), wherein the front end C3/C4 separation comprises, in terms of process technology, a C4 absorber (6) and a depropanizer (8), wherein a hydrocarbon fraction consisting of hydrocarbons having a maximum of 3 carbon atoms is obtained as a gaseous overhead product (15) of the C4 absorber (6), and wherein a liquid hydrocarbon fraction consisting of hydrocarbons ...

СПОСОБ ПОЛУЧЕНИЯ УГЛЕВОДОРОДНЫХ ПРОДУКТОВ

Изобретение относится к способу получения углеводородных продуктов, включающему: а) приготовление углеводородного потока (С4), который преимущественно содержит разветвленные и неразветвленные углеводороды, каждый содержащий четыре атома углерода. Способ характеризуется тем, что б) извлекают первый и второй парциальные потоки (i-C4, n-С4) из углеводородного потока (С4), причем первый парциальный поток (i-C4) преимущественно содержит разветвленные углеводороды с четырьмя атомами углерода и второй парциальный поток (n-С4) преимущественно содержит неразветвленные углеводороды с четырьмя атомами углерода, и в) проводят паровой крекинг по меньшей мере части первого парциального потока (i-C4) или полученного из него потока при первой, более высокой жесткости крекинга, и по меньшей мере части второго парциального потока (n-С4) или полученного из него потока при второй, более низкой жесткости крекинга, причем первая, более высокая жесткость крекинга приводит к превращению изобутана в первом парциальном ...

СПОСОБ ТЕРМИЧЕСКОГО РАСЩЕПЛЕНИЯ УГЛЕВОДОРОДОВ, В ЧАСТНОСТИ, ДЛЯ ПОЛУЧЕНИЯ ОЛЕФИНОВ, И УСТАНОВКА ДЛЯ ОСУЩЕСТВЛЕНИЯ СПОСОБА

... 1. Способ термического расщепления углеводородов, в частности, для получения олефинов, в котором в печи для расщепления смесь углеводородов и водяного пара нагревают до температуры от 750 до 900°С и образующийся при этом содержащий водород крекинг-газ по времени сразу же после нагревания охлаждают в охладителе для крекинг-газа до температуры приблизительно ниже 650°С, затем при наличии тяжелых продуктов посредством резкого охлаждения дополнительно охлаждают и после этого посредством отделения освобождают от тяжелого масла и бензина, затем из содержащего легкие продукты крекинг-газа посредством резкого охлаждения удаляют водяной пар, уплотняют при помощи компрессора до по меньшей мере 20 бар, освобождают посредством высушивания от остатков влаги, охлаждают в установке глубокого охлаждения и направляют для отделения легких продуктов в несколько ректификационных колонн, отличающийся тем, что если смотреть в направлении потока технологической среды, выше по потоку от установки глубокого охлаждения ...

Hydrocarbon gas processing

Method for separating a hydrocarbon mixture, separating plant and steam cracking plant

The invention relates to a method for separating a hydrocarbon mixture (C) obtained at least partially by means of steam cracking (10), which hydrocarbon mixture contains at least hydrocarbons having one, two, and three carbon atoms, among them ethane and ethylene, wherein first a first fraction (C2+, C2-) is extracted from the hydrocarbon mixture (C), wherein other components are at least partially removed, which first fraction contains the majority of the hydrocarbons having two and more carbon atoms previously contained in the hydrocarbon mixture (C) or the majority of the hydrocarbons having two and less carbon atoms previously contained in the hydrocarbon mixture (C), wherein further fractions (C1, C2, C2H4, C3+, C2H6) are then extracted from the first fraction (C2+, C2-). In parallel with or after the at least partial removal of the other components from the hydrocarbon mixture (C), a fraction (R, S) containing ethane is removed in an amount that reduces the ethane content in the ...

LNG PROCESS FOR VARIABLE PIPELINE GAS COMPOSITION

The invention relates to a system, method and apparatus for processing natural gas in an LNG facility. A natural gas feed is introduced into a heavies removal unit. The heavies removal system includes a heavies removal column and a distillation column. The heavies removal column and the distillation column are connected via a purge/recovery line. One or more components of the natural gas feed is purged from the heavies removal column to the distillation column via the purge/recovery line to obtain a specified concentration or concentration range of heavy components feeding into the distillation column.

METHOD FOR SEPARATING OUT A HYDROCARBON MIXTURE, SEPARATION SYSTEM, STEAM CRACKING SYSTEM AND METHOD FOR RETROFITTING A STEAM CRACKING SYSTEM

The invention relates to a method for separating a hydrocarbon mixture (C) obtained at least partially by means of steam cracking (10), which hydrocarbon mixture contains at least hydrocarbons having one, two, and three carbon atoms, among them ethane and ethylene, wherein first a first fraction (C2+, C2-) is extracted from the hydrocarbon mixture (C), wherein other components are at least partially removed, which first fraction contains the majority of the hydrocarbons having two and more carbon atoms previously contained in the hydrocarbon mixture (C) or the majority of the hydrocarbons having two and less carbon atoms previously contained in the hydrocarbon mixture (C), wherein further fractions (C1, C2, C2H4, C3+, C2H6) are then extracted from the first fraction (C2+, C2-). In parallel with or after the at least partial removal of the other components from the hydrocarbon mixture (C), a fraction (R, S) containing ethane is removed in an amount that reduces the ethane content in the ...

Method for separating a hydrocarbon mixture, separating plant and steam cracking plant

production process of 1-butene and process for the removal of paraffins

METHOD AND INSTALLATION FOR THERMALLY CRACKING HYDROCARBONS, ESPECIALLY FOR PRODUCING OLEFINS

The invention relates to a method for cracking hydrocarbons, especially for producing olefins, whereby a mixture consisting of hydrocarbons and water vapor is heated in a cracking furnace up to a temperature ranging from 750 °C to 900 °C, and the resulting cracking gas which contains hydrogen is immediately cooled after the heating process in a cracking gas cooler to a temperature lower than approximately 650 °C. If heavy products are present, the cracking gas is subsequently subjected to an additional cooling by quenching and is then liberated by separating out heavy oil and gasoline. Afterwards, water vapor is removed by quenching from the cracking gas containing light products. This cracking gas is compressed to at least 20 bar by a compressor, is liberated from residual water by drying, is cooled in a deep cooling installation, and is fed into a plurality of rectifying columns in order to separate out the light products. Selective membrane diffusion is used to extract a portion of the ...

Cryogenic distillation

A cryogenic technique for recovering pure products from a mixture of at least three close-boiling components. A preferred process is provided for separating a hydrocarbon mixture containing an alkene (i.e. ethene or propene), corresponding alkane having the same number of carbon atoms and at least one heavier hydrocarbon component. The improved process comprises: feeding the hydrocarbon mixture to a first distillation tower having an upper reflux stage; recovering a first overhead vapor stream rich in alkene and alkane from the first distillation tower and passing the first overhead vapor stream to a middle distillation stage of a second multi-stage distillation tower; recovering a second overhead vapor stream rich in alkene from the second distillation tower; adiabatically compressing the alkene-rich vapor stream and passing the compressed vapor to a second distillation tower reboiler stage. This provides a heat pump for cooling and condensing the compressed vapor and heating a liquid ...

СПОСОБ ОБРАБОТКИ ПОТОКА ПРОДУКТА

Изобретение относится к способу обработки потока продукта процесса автотермического крекинга, указанный поток продукта включает один или более олефинов, водород, монооксид углерода, диоксид углерода и один или более оксигенатов, и в котором оксигенаты присутствуют в потоке продукта до обработки при общей концентрации, составляющей от 100 до 5000 част./млн. по массе, указанный способ включает: (а) контактирование потока продукта с водным потоком, включающим по крайней мере одно соединение, выбранное из веществ, которые можно представить формулами: , , в которых R1 выбирают из Н и содержащих углерод заместителей; R2 представляет собой Н; R3 представляет собой кетильную группу формулы C(O)NR4R5, в которой R4 представляет собой Н или алкил, a R5 представляет собой Н, алкил или NH2; с целью селективного удаления оксигенатов в присутствии диоксида углерода, и (б) последующее пропускание обработанного с целью удаления оксигенатов потока из стадии (а) в системе удаления диоксида углерода на основе ...

Process

Method and apparatus for dehydration of a hydrocarbon gas

Olefin purification by adsorption of acetylenics and regeneration of adsorbent

Method for separating a hydrocarbon mixture, separating plant and steam cracking plant

The invention relates to a method for separating a hydrocarbon mixture (C) obtained at least partially by means of steam cracking (10), which hydrocarbon mixture contains at least hydrocarbons having one, two, and three carbon atoms, among them ethane and ethylene, wherein first a first fraction (C2+, C2-) is extracted from the hydrocarbon mixture (C), wherein other components are at least partially removed, which first fraction contains the majority of the hydrocarbons having two and more carbon atoms previously contained in the hydrocarbon mixture (C) or the majority of the hydrocarbons having two and less carbon atoms previously contained in the hydrocarbon mixture (C), wherein further fractions (C1, C2, C2H4, C3+, C2H6) are then extracted from the first fraction (C2+, C2-). In parallel with or after the at least partial removal of the other components from the hydrocarbon mixture (C), a fraction (R, S) containing ethane is removed in an amount that reduces the ethane content in the ...

PROCESS AND APPARATUS FOR PROCESSING A HYDROCARBON GAS STREAM

A process for separating a mixed or raw gas feed to produce a dry gas product and a hydrocarbon liquid product is provided. The process comprises scrubbing heavier hydrocarbon components from the gas feed to produce a lighter ends gas stream and a heavier ends liquid stream; cooling the lighter ends gas stream and separating the cooled lighter ends gas stream into a cold liquid stream and the dry gas product; and using the cold liquid stream to assist in scrubbing the heavier hydrocarbon components from the gas feed.

PARAFFIN REMOVAL FROM C4 CONTAINING STREAMS

The present disclosure relates to processes for the removal of paraffins. The processes generally include providing a C4 containing stream including isobutylene, 1 -butene, 2-butene, n- butane and isobutane, introducing the C4 containing stream into a paraffin removal process to form an olefin rich stream, wherein the paraffin removal process is selected from extractive distillation utilizing a solvent including an organonitrile, passing the C4 containing stream over a semi-permeable membrane and combinations thereof; and recovering the olefin rich stream from the paraffin removal process, wherein the olefin rich stream includes less than 5 wt.% paraffins.

PROCESS FOR THE TREATMENT OF A PRODUCT STREAM

PROCEEDED OF TREATMENT Of a GAS CURRENT CRACKS RESULTING From an INSTALLATION FROM HYDROCARBON PYROLYSIS AND ASSOCIATED INSTALLATION.

Ce procédé comporte la séparation d'un courant amont de gaz craqué partiellement condensé dans un séparateur intermédiaire (44B) pour récupérer un liquide intermédiaire (136) et un courant intermédiaire (138) de gaz craqué et l'introduction du liquide intermédiaire (140) dans une colonne intermédiaire (68) de déméthanisation. Le procédé comprend le prélèvement d'une partie du liquide intermédiaire (136) et la détente d'au moins une première fraction (194) obtenue à partir de la partie prélevée (190). Il comprend la mise en relation d'échange thermique de la première fraction détendue avec le courant intermédiaire de tête (146) issu de la colonne (68) pour condenser au moins partiellement le courant intermédiaire de tête (146). Le procédé comporte la séparation du courant intermédiaire de tête partiellement condensé dans un premier séparateur (76) de reflux pour former un courant liquide (148) introduit dans la colonne intermédiaire (68) et un courant gazeux de combustible (150).

Autothermal cracking process for producing olefins

The present invention relates to a process for the production of olefins, and in particular, a process for the production of olefins, which comprises a) contacting a paraffinic hydrocarbon containing feed and an oxygen-containing gas with a catalyst capable of supporting combustion beyond the normal fuel rich limit of flammability at a gas hourly space velocity of at least 100,000 hr-1, a pressure of at least 10 barg and a temperature of at least 750°C to produce a product stream comprising olefins and unreacted oxygen, b) quenching the product stream by contacting with a quenchant, said contacting occurring within a residence time of less than 50 milliseconds from the front face of the catalyst until contact with the quenchant, to produce a quenched product stream comprising olefins and unreacted oxygen, c) passing the quenched product stream from step (b) to one or more heat recovery steps in which it is cooled to a temperature of less than 300°C, and d) subsequently passing the product ...

Cryogenic separation

LNG process for variable pipeline gas composition

The invention relates to a system, method and apparatus for processing natural gas in an LNG facility. A natural gas feed is introduced into a heavies removal unit. The heavies removal system includes a heavies removal column and a distillation column. The heavies removal column and the distillation column are connected via a purge/recovery line. One or more components of the natural gas feed is purged from the heavies removal column to the distillation column via the purge/recovery line to obtain a specified concentration or concentration range of heavy components feeding into the distillation column.

RECOVERY OF A USEFUL POLYMERIZABLE FRACTION

The invention concerns a method of obtaining, from the cracked gases emerging from a steam cracker, a polymerizable fraction of recyclable material consisting of styrene, methylstyrenes, vinyltoluenes, indene, methylindenes and fractions whose boiling points lie between those of styrene and the methylindenes, a secondary stream from the cracked-gas column being divided, by means of a distillation unit, into the fraction of recyclable material and into fractions which are fed back to the cracked gas column.

OLEFIN PURIFICATION BY ADSORPTION OF ACETYLENICS AND REGENERATION OF ADSORBENT

Processes using heterogeneous adsorbents are disclosed for purification of olefins such as are typically produced by thermal cracking of suitable hydrocarbon feedstocks, by passing a steam of olefin having from 2 to about 8 carbon atoms, containing acetylenic impurities having the same or similar carbon content, and optionally saturated hydrocarbon gases, through a particulate bed of adsorbent comprising predominantly a support material having high surface area on which is dispersed at least one metallic element. Adsorption is carried out in an essentially dihydrogen-free atmosphere within the bed, selective and reversible adsorption and/or complexing of the contained acetylenic contaminants with the adsorbent, and thereby obtain purified effluent which contains less than a predetermined level of the acetylenic impurities. Selective and reversible adsorption and/or complexing of the contained acetylenic impurities with the adsorbent is continued until levels of acetylenic impurities in ...

PROCEEDED OF FRACTIONATION Of a GAS CURRENT CRACKS TO OBTAIN a CUT RICH IN ETHYLENE AND a FUEL CURRENT, AND ASSOCIATED INSTALLATION.

Ce procédé comporte l'introduction d'un courant (140) de gaz craqué aval issu d'un échangeur thermique aval (58) dans un séparateur aval (60) et la récupération, en tête du séparateur aval (60), d'un courant (144) gazeux de combustible à haute pression. Le procédé comporte le passage du courant (144) de combustible à travers l'échangeur aval (58) et un échangeur intermédiaire (50, 54) pour former un courant (146) combustible haute pression réchauffé, la détente du courant (146) de combustible haute pression réchauffé dans au moins un premier appareil (68) de détente dynamique et le passage du courant (148) de combustible partiellement détendu issu de l'échangeur intermédiaire (50, 54) dans un deuxième appareil de détente dynamique (70) pour former un courant (152) de combustible détendu. Le courant (152) de combustible détendu issu du deuxième appareil de détente dynamique (70) est réchauffé dans l'échangeur thermique aval (58) et dans l'échangeur thermique intermédiaire (50, 54). This method comprises the introduction of a stream (140) of downstream cracked gas from a downstream heat exchanger (58) in a downstream separator (60) and the recovery, at the top of the downstream separator (60), of a high pressure fuel gas stream (144). The method includes passing fuel stream (144) through the downstream heat exchanger (58) and an intermediate heat exchanger (50, 54) to form a heated high pressure fuel stream (146), releasing current (146) from high-pressure fuel heated in at least a first dynamic expansion apparatus (68) and passage of the partially expanded fuel stream (148) from the intermediate exchanger (50, 54) into a second dynamic expansion apparatus (70) for forming a stream (152) of expanded fuel. The expanded fuel stream (152) from the second dynamic expansion device (70) is reheated in the downstream heat exchanger (58) and the intermediate heat exchanger (50, 54).

METHOD OF TREATING A HYDROCARBON FEEDSTOCK COMPRISING HYDROGEN AND HYDROCARBONS IN C1 HAS C4.

La présente invention concerne un procédé de traitement d'une charge hydrocarbonée contenant de l'hydrogène et des hydrocarbures incluant des hydrocarbures en C1 à C4, mettant en œuvre une première et une seconde étapes de recontactage et dans lequel la l'effluent gazeux issu de la seconde étape de recontactage est recyclé à la première de recontactage. Le procédé s'applique en particulier au traitement d'une charge hydrocarbonée issue du reformage catalytique en vue de récupérer l'hydrogène et des hydrocarbures en C3 et C4.

Method and apparatus for dehydration of a hydrocarbon gas

A method of dehydrating a hydrocarbon gas stream comprises stripping water from a liquid desiccant stream using a water-undersaturated portion of the gas stream, drying the gas stream to extract the stripped water, and then further drying the partially-dried gas stream using the stripped desiccant to achieve a low water content level in the gas stream for pipeline transportation. In one embodiment, the liquid desiccant is supplied by a regeneration facility at a remote location and the liquid desiccant is returned to the regeneration facility for regeneration after drying the gas. In another embodiment, the regeneration of the desiccant is performed locally whereby the liquid desiccant is, after drying the gas, stripped again of water and reused locally.

Method and plant for obtaining crude oil products

A method is disclosed for obtaining crude oil products, wherein a gaseous stream (d) is formed from a first crude oil stream (b) and the gaseous stream (d) undergoes, at least partially, a steam cracking process (1), wherein in the steam cracking process (1) a cracking gas stream (e) is produced, which is quenched at least partially with a fluid hydrocarbon stream (f) while maintaining a quench outflow (g). This involves using at least a part of the quench outflow (g) to form a separation feed and the separation feed is separated out by distillation (5, 8) together with a second crude oil stream (c) while maintaining distillation outflows (h, i, k, p, r). The separation feed is formed in such a way that it contains hydrocarbons contained in the quench outflow (g) with one, two, three, four and more carbon atoms and/or hydrocarbons formed from such hydrocarbons. The invention likewise relates to a plant (100) configured for carrying out the method.

Hydrocarbon gas processing

CHEMICAL ABSORPTION PROCESS FOR RECOVERING OLEFINS FROM CRACKED GASES

The present invention provides a method for recovering high purity olefins from cracked gas effluents or other paraffin/olefin gaseous mixtures by use of a chemical absorption process.

Separation sequence for hydrocarbons from a gentle thermal cleavage

The invention describes a method for separating hydrocarbons in an installation for generating hydrocarbons from a hydrocarbon-containing charge by cleavage, wherein the product gas of the cleavage, which is produced as the raw gas (1) and which contains gaseous hydrocarbons is compressed (2a) and dried (5a,5b), and supplied as charge material into a separation stage (hereafter referred to as front end C3/C4 separation), in which the raw gas (1) is separated into a hydrocarbon fraction consisting of hydrocarbons having a maximum of 3 carbon atoms (15) and a hydrocarbon fraction consisting of hydrocarbons having at least 4 carbon atoms (17), wherein the front end C3/C4 separation comprises, in terms of process technology, a C4 absorber (6) and a depropanizer (8), wherein a hydrocarbon fraction consisting of hydrocarbons having a maximum of 3 carbon atoms is obtained as a gaseous overhead product (15) of the C4 absorber (6), and wherein a liquid hydrocarbon fraction consisting of hydrocarbons ...

원유 제품들을 획득하기 위한 방법 및 플랜트

... 제1 원유 스트림(b)으로부터 가스성 스트림(d)이 형성되고 가스성 스트림(d)은 적어도 부분적으로 증기 분해 공정(1)의 대상이 되며, 증기 분해 공정(1)에서, 액체 탄화수소 스트림(f)으로 적어도 부분적으로 급냉되는 분해 가스 스트림(e)이 생산되고, 이에 의해 급냉 유출액(g)을 형성하는, 원유 제품들을 획득하기 위한 방법이 제공된다. 급냉 유출액(g)의 적어도 일부분은 분리 피드를 형성하도록 사용되고, 분리 피드는 제2 원유 스트림(c)과 함께 증류에 의해 분리되고, 증류 유출물들(h, i, k, p, r)을 형성한다는 사실이 제공된다. 분리 피드는 급냉 유츌물(g) 내에 포함되는 하나, 2개, 3개, 4개 또는 그 이상의 탄소 원자를 갖는 탄화수소들 및/또는 그러한 탄화수소들로부터 형성되는 탄화수소들을 포함하도록 형성된다. 본 발명은 또한 상기 방법을 수행하도록 구성되는 장치(100)에 관한 것이다.

hydrocarbon gas processing

Method for producing hydrocarbon products

The invention relates to a method for producing hydrocarbon products which comprises preparing a hydrocarbon stream (C4) which predominantly comprises branched and unbranched hydrocarbons each having four carbon atoms. A first and a second partial stream (i-C4, n-C4) are obtained from this stream (C4), the first partial stream (i-C4) predominantly comprising branched hydrocarbons with four carbon atoms and the second partial stream (n-C4) predominantly comprising unbranched hydrocarbons with four carbon atoms. The method further comprises the steam cracking of at least part of the first partial stream (i-C4) at a first, higher cracking severity and at least part of the second partial stream (n-C4), at a second, lower, cracking severity.

METHOD AND DEVICE FOR RECOVERING C2-C4 COMPONENTS IN METHANE-CONTAINING INDUSTRIAL GAS

The present invention discloses a method and apparatus for recovering C2 components in a methane-containing industrial gas. The method comprises: (1) cooling a compressed methane-containing industrial gas and performing gas-liquid separation; (2) absorbing C2 components in the gas phase by using an absorbent to obtain an absorption rich liquid; (3) returning the absorption rich liquid to the compression in step (1) or mixing the absorption rich liquid with the liquid phase obtained in step (1) to obtain a mixed liquid, and depressurizing the mixed liquid or the absorption rich liquid; (4) performing methane desorption on the depressurized stream to obtain a rich absorbent, or performing second gas-liquid separation on the depressurized stream, followed by methane desorption on the second liquid phase to obtain a rich absorbent; and (5) desorbing and separating the rich absorbent to obtain a lean absorbent and an enriched gas, and recycling and reusing the lean absorbent. The method has ...

PROCESS FOR THE RECOVERY OF AN ETHYLENE AND PROPYLENE CONTAINING STREAM FROM A CRACKED GAS RESULTING FROM HYDROCARBON CRACKING

Hydrocarbon gas processing

Separation sequence for hydrocarbons from a gentle thermal cleavage

The invention describes a method for separating hydrocarbons in an installation for generating hydrocarbons from a hydrocarbon-containing charge by cleavage, wherein the product gas of the cleavage, which is produced as the raw gas (1) and which contains gaseous hydrocarbons is compressed (2a) and dried (5a,5b), and supplied as charge material into a separation stage (hereafter referred to as front end C3/C4 separation), in which the raw gas (1) is separated into a hydrocarbon fraction consisting of hydrocarbons having a maximum of 3 carbon atoms (15) and a hydrocarbon fraction consisting of hydrocarbons having at least 4 carbon atoms (17), wherein the front end C3/C4 separation comprises, in terms of process technology, a C4 absorber (6) and a depropanizer (8), wherein a hydrocarbon fraction consisting of hydrocarbons having a maximum of 3 carbon atoms is obtained as a gaseous overhead product (15) of the C4 absorber (6), and wherein a liquid hydrocarbon fraction consisting of hydrocarbons ...

HYDROCARBON GAS PROCESSING

A process for the recovery of ethane, ethylene, propane, propylene and heavier hydrocarbon components from a hydrocarbon gas stream (31) is disclosed. In recent years, the preferred method of separating a hydrocarbon gas stream (31) generally includes supplying at least portions of the gas stream (31) to a fractionation tower (17) having at least one reboiler, and often one or more side reboilers, to supply heat to the column by withdrawing and heating some of the tower liquids (40, 42) to produce stripping vapors that separate the more volatile components from the desired components. The reboiler and side reboilers (if any) are typically integrated into the feed stream cooling scheme (10) to provide at least a portion of the refrigeration needes to condense the desired components for subsequent fractionation in the distillation column (17). In the process disclosed, the tower reboiling scheme is modified to use one or more tower liquid distillation streams (40) from a point higher in the ...

PARAFFIN REMOVAL FROM C4 CONTAINING STREAMS

The present disclosure relates to processes for the removal of paraffins. The processes generally include providing a C4 containing stream including isobutylene, 1 -butene, 2-butene, n- butane and isobutane, introducing the C4 containing stream into a paraffin removal process to form an olefin rich stream, wherein the paraffin removal process is selected from extractive distillation utilizing a solvent including an organonitrile, passing the C4 containing stream over a semi-permeable membrane and combinations thereof; and recovering the olefin rich stream from the paraffin removal process, wherein the olefin rich stream includes less than 5 wt.% paraffins.

METHOD FOR FRACTIONATING A CRACKED GAS FLOW IN ORDER TO OBTAIN AN ETHYLENE-RICH CUT AND A FUEL FLOW, AND ASSOCIATED FACILITY

Procédé de fractionnement d'un courant de gaz craqué pour obtenir une coupe riche en éthylène et un courant de combustible, et installation associée. Ce procédé comporte l'introduction d'un courant (140) de gaz craqué aval issu d'un échangeur thermique aval (58) dans un séparateur aval (60) et la récupération, en tête du séparateur aval (60), d'un courant (144) gazeux de combustible à haute pression. Le procédé comporte le passage du courant (144) de combustible à travers l'échangeur aval (58) et un échangeur intermédiaire (50, 54) pour former un courant (146) combustible haute pression réchauffé, la détente du courant (146) de combustible haute pression réchauffé dans au moins un premier appareil (68) de détente dynamique et le passage du courant (148) de combustible partiellement détendu issu de l'échangeur intermédiaire (50, 54) dans un deuxième appareil de détente dynamique (70) pour former un courant (152) de combustible détendu. Le courant (152) de combustible détendu issu du deuxième ...

PROCESS FOR TREATING A STREAM OF CRACKED GAS COMING FROM A HYDROCARBON PYROLYSIS PLANT, AND ASSOCIATED PLANT

Ce procédé comporte la séparation d'un courant amont de gaz craqué partiellement condensé dans un séparateur intermédiaire (44B) pour récupérer un liquide intermédiaire (136) et un courant intermédiaire (138) de gaz craqué et l'introduction du liquide intermédiaire (140) dans une colonne intermédiaire (68) de déméthanisation. Le procédé comprend le prélèvement d'une partie du liquide intermédiaire (136) et la détente d'au moins une première fraction (194) obtenue à partir de la partie prélevée (190). Il comprend la mise en relation d'échange thermique de la première fraction détendue avec le courant intermédiaire de tête (146) issu de la colonne (68) pour condenser au moins partiellement le courant intermédiaire de tête (146). Le procédé comporte la séparation du courant intermédiaire de tête partiellement condensé dans un premier séparateur (76) de reflux pour former un courant liquide (148) introduit dans la colonne intermédiaire (68) et un courant gazeux de combustible (150).

MEMBRANE SEPARATION PROCESS FOR CRACKED GASES

A process for recovering hydrogen from a cracking effluent (11) wherein a cracking effluent (11) is compressed (12, 18, 24, 30, 38, etc.), and then at least a portion of the hydrogen is separated from the cracking effluent prior to cooling (60, etc.) of the cracking effluent to remove lower-boiling components. The separation of hydrogen is preferably accomplished by passing the cracking effluent through at least one semi-permeable membrane (40, 42, etc.).

Process for purifying spent lye containing hydrocarbons from absorption plant for removing acidic gases comprises feeding lye and stripping gas to stripping column and removing stripped lye and stripped waste gas

Process for purifying spent lye containing hydrocarbons from an absorption plant for removing acidic gases comprises feeding the lye and a stripping gas to a stripping column, the lye being introduced to the column in a counter current stream to the stripping gas; and removing stripped lye with a small amount of hydrocarbons and a stripped waste gas with a large amount of hydrocarbons. Process for purifying spent lye containing hydrocarbons from an absorption plant for removing acidic gases comprises feeding the lye and a stripping gas to a stripping column, the lye being introduced to the column in a counter current stream to the stripping gas; and removing stripped lye with a small amount of hydrocarbons and a stripped waste gas with a large amount of hydrocarbons. A sub-pressure is produced with the aid of a gas jet pump and a propellant gas in the pump. The stripping gas is conveyed through the stripping column and the stripped waste gas mixed with the propellant gas is recovered as ...

Method and apparatus for dehydration of a hydrocarbon gas

A method and facility 2 for dehydrating a hydrocarbon gas stream, the facility comprising a first stage having a separator 6 to separate a gas phase from a multiphase stream. A second stage arranged to dry the gas stream to achieve a water unsaturated stream comprising a mixer 14, cooler 16, separator 18 and compressor 24. A third stage where the under-saturated gas stream is used to strip water from a lean desiccant such as glycol using a mixer 30 and separator 32. A fourth stage drying the resultant gas stream to a first water content level using a cooler 38, mixer 40 and separator 44. A fifth stage using the stripped desiccant to further dry the gas stream to a second lower water content level, the stage including a cooler 52, mixer 54 and a separator 58.

Use of low pressure distillate as absorber oil in a fcc recovery section

HYDROCARBON SEPARATION

A process for the separation of propylene from an input stream of C3 hydrocarbons containing propylene, possibly C4 and/or higher hydrocarbons, and MAPD (methyl acetylene and/or propadiene), comprises subjecting said input steam to fractional distillation to separate the propylene as an overhead stream leaving a bottoms stream containing said MAPD and any C4 and/or higher hydrocarbons. In order to avoid the need to slip substantial amounts of valuable propylene into the bottoms stream to maintain the concentration of MAPD in the bottoms stream at a safe level, a propane-containing stream is added to the input stream of C3 hydrocarbons so that the bottoms stream contains a substantial amount of propane. So that the propylene content of t he bottoms stream can be maintained at below 10% by weight, the amount of propane added to the input stream is such that the weight of propane, plus any propylene and C4 and/or higher hydrocarbons, in said bottoms stream is greater than the total weight ...

Process for separating and recovering NGLs from hydrocarbon streams

This process comprises using unconventional processing of hydrocarbons, e.g. natural gas, for recovering C2+ and NGL hydrocarbons that meet pipeline specifications, without the core high capital cost requirement of a demethanizer column, which is central to and required by almost 100% of the world's current NGL recovery technologies. It can operate in Ethane Extraction or Ethane Rejection modes. The process uses only heat exchangers, compression and simple separation vessels to achieve specification ready NGL. The process utilizes cooling the natural gas, expansion cooling, separating the gas and liquid streams, recycling the cooled streams to exchange heat and recycling selective composition bearing streams to achieve selective extraction of hydrocarbons, in this instance being NGLs. The compactness and utility of this process makes it feasible in offshore applications as well as to implementation to retrofit/revamp or unload existing NGL facilities. Many disparate processes and derivatives are anticipated for its use.

Process for recovering catalytic product

A process is disclosed for recovering product from catalytically converted product streams. An integrated debutanizer column provides an LPG stream, a light naphtha stream and a heavy naphtha stream. The integrated debutanizer column may comprise a dividing wall column. The light naphtha stream may be used as an absorbent for a primary absorber column which provides advantageous operation.

Method for fractionating a stream of cracked gas to obtain an ethylene-rich cut and a stream of fuel, and related installation

This method includes introducing a downstream stream ( 140 ) of cracked gas from a downstream heat exchanger ( 58 ) in a downstream separator ( 60 ) and recovering, at the head of the downstream separator ( 60 ), a high-pressure fuel gas stream ( 144 ). The method includes the passage of the stream ( 144 ) of fuel through the downstream exchanger ( 58 ) and an intermediate exchanger ( 50, 54 ) to form a reheated high-pressure fuel stream ( 146 ), the expansion of the reheated high-pressure fuel stream ( 146 ) in at least a first dynamic expander ( 68 ) and the passage of the partially expanded fuel stream ( 148 ) from the intermediate exchanger ( 50, 54 ) in a second dynamic expander ( 70 ) to form an expanded fuel stream ( 152 ). The expanded fuel stream ( 152 ) from the second dynamic expander ( 70 ) is reheated in the downstream heat exchanger ( 58 ) and in the intermediate heat exchanger ( 50, 54 ).

PROCESS FOR THE RECOVERY OF CRUDE

A method for the production of stabilized crude oil, the method comprising the steps of: providing a stream of crude oil; injecting steam into said stream and so stripping C3− from said stream; providing a gas stream; extracting C4+ from the gas stream, and so; producing a stream from the extracted C4+; co-mingling the stripped stream with the C4+ stream, and so; producing a stream of stabilized crude oil. 1. A method for the production of crude oil , the method comprising the steps of:providing a stream of crude oil;injecting steam into said stream and so stripping C3− from said stream;providing a gas stream;extracting C4+ from the gas stream, and so;producing a stream from the extracted C4+;co-mingling the stripped stream with the C4+ stream.2. The method according to wherein the extracting step comprises the step of condensing the C4+ from the gas stream.3. The method of wherein the condensing step comprises applying dew-point control to the gas stream to condenses the C4+ from the gas stream.4. The method according to further including the step of introducing the crude stream to a steam stripping column claim 1 , within which injecting of steam to the crude stream is effected.5. The method according to further including claim 1 , after the co-mingling step claim 1 , the step of separating vapour and liquid from the co-mingled stream to produce a stream of stabilized crude oil.6. The method according to wherein an offgas rate for vapour separated from the stabilized crude oil stream is maintained at a preset value.7. A system for the production of stabilized crude oil comprising:a steam injection station arranged to receive a stream of unstabilised crude oil, said station arranged to subject said stream to an injection of steam;said steam injection station including a first outflow to deliver a stripped stream of crude to a stabilizer section and a second outflow to deliver a flow of gas to a condensation station;said condensation station arranged to condense the ...

Carbon Dioxide Fractionalization Process

A process comprising receiving a hydrocarbon feed stream comprising carbon dioxide, separating the hydrocarbon feed stream into a light hydrocarbon stream and a heavy hydrocarbon stream, separating the light hydrocarbon stream into a carbon dioxide-rich stream and a carbon dioxide-lean stream, and feeding the carbon dioxide-lean stream into a hydrocarbon sweetening process, thereby increasing the processing capacity of the hydrocarbon sweetening process compared to the processing capacity of the hydrocarbon sweetening process when fed the hydrocarbon feed stream. Included is an apparatus comprising a first separation unit that receives a hydrocarbon feed stream containing carbon dioxide and produces a heavy hydrocarbon stream and a light hydrocarbon stream, and a second separation unit that receives the light hydrocarbon stream and produces a carbon dioxide-rich stream and a carbon dioxide-lean stream, wherein the apparatus is configured to feed the carbon dioxide-lean stream to a physical solvent, membrane, or carbon dioxide recovery process.

Enhanced Distillate Oil Recovery From Thermal Processing and Catalytic Cracking of Biomass Slurry

A method for thermal processing and catalytic cracking of a biomass to effect distillate oil recovery can include, particle size reduction. slurrying the biomass with a carrier fluid to create a reaction mixture, slurrying a catalyst with a carrier fluid to create a catalyst slurry, heating the reaction mixture and/or the catalyst slurry, and depolymerizing the reaction mixture with the catalyst. The reaction mixture can undergo distillation and fractionation to produce distillate fractions that include naphtha, kerosene, and diesel. In some embodiments, thermal processing and catalytic cracking includes vaporization of the biomass followed by distillation and fractionation. In some embodiments, a resulting distillate can be used as a carrier fluid. In some embodiments, the method can include desulfurization, dehydration, and/or decontamination. 1. A method of thermal processing and catalytic cracking of a biomass , the method comprising the steps of:(a) slurrying said biomass within a first carrier fluid to create a reaction mixture; dehydrating said reaction mixture to remove and recover the water;(b) slurrying a catalyst within a second carrier fluid to create a catalyst slurry, heating separately said reaction mixture and said catalyst slurry to different temperatures that once added together within a reactor, said catalyst slurry and said reaction mixture form a catalytic active biomass slurry, wherein said catalytic active biomass is at a temperature above a catalyst activation temperature of said catalyst to immediately initiate catalyst cracking;(c) directing a residual reaction mixture to a vaporizer for thermal processing, whereby an additional catalyst is optionally added and a system operated to cause both distillation and catalyst cracking, whereby a vapor is optionally further exposed to a different catalyst type using a different method of catalyst addition to enhance a quality and a composition of a distillate;(d) distilling via thermal processing a ...

Cyclonic Cooling System

Fractionation, the process used by refineries to break down carbon chains of petroleum compounds so that the desired carbon compound can be achieved. This process typically involves high heat, distillation, re-boiling, and energy intensive cooling processes. This application discloses an invention that will condense vapor produced by a pyrolysis reactor. This system uses one standard cyclone; three cascading cyclones with internal cyclonic rotation fins that force incoming vapor to maintain a fixed amount of rotation regardless of the vapor's velocity, heat sinks that increase condensation, reversing fins that force gases to reverse direction inside the cyclone decreasing vapor velocity to increase heat loss; a main collection tank that allows for the controlling of the fuel flash point; a compact low temperature coil cooler that uses 100 percent of the cooling surface that allows for the production of higher quality fuel; and, bubblers/scrubbers that produce back pressure into the pyrolysis reactor.

STAGE AND SYSTEM FOR COMPRESSING CRACKED GAS

A compression stage for the compression of cracked gas, the compression stage comprising a liquid separating means for separating liquid components from gaseous components of a cracked gas, a compressor connected to the liquid separating means, a gas cooling means connected to the compressor for cooling the compressed gas from the compressor, wherein the gas cooling means are cooled by a first cooling fluid from the cooling fluid source. The stage further comprises gas precooling means connected to the liquid separating means cracked gas, having an inlet for receiving the cracked gas. 1. A compression stage for the compression of cracked gas , the compression stage comprising:a liquid separating means for separating liquid components from gaseous components of a cracked gas;a compressor connected to the liquid separating means;a gas cooling means connected to the compressor for cooling the compressed gas from the compressor, wherein the gas cooling means are cooled by a first cooling fluid from the cooling fluid source;the stage further comprisinggas precooling means connected to the liquid separating means, having an inlet for receiving the cracked gas.2. The stage according to claim 1 , whereinthe gas precooling means comprises a heat exchanging means and an absorption cooling means, whereinthe heat exchanging means is cooled by a second cooling fluid from the absorption cooling means, whereinthe absorption cooling means is arranged for generating the second cooling fluid using first cooling fluid from the cooling fluid source and hot water from a heating fluid source.3. The stage according to claim 1 , whereinthe first cooling fluid for the absorption cooling means is supplied from a primary gas cooler of the gas cooling means of the stage, and whereinthe first cooling fluid from the absorption cooling means is supplied to the secondary gas cooler.4. The stage according to claim 1 , whereinthe first cooling fluid for the absorption cooling means of the stage is ...

Carbon Dioxide Fractionalization Process

A method comprises separating a hydrocarbon feed stream having carbon dioxide into a heavy hydrocarbon stream and a light hydrocarbon stream. The light hydrocarbon stream is separated into a carbon dioxide-rich stream and a carbon dioxide-lean stream. At least a portion of the carbon dioxide-lean stream is fed to a hydrocarbon sweetening process. Another method comprises receiving a hydrocarbon feed stream that comprises 30 molar percent to 80 molar percent carbon dioxide. A heavy hydrocarbon stream is separated from the hydrocarbon feed stream, wherein the heavy hydrocarbon stream comprises at least 90 molar percent C hydrocarbons. A carbon dioxide-rich stream is separated from the hydrocarbon feed stream, wherein the carbon dioxide-rich stream comprises at least 95 molar percent carbon dioxide. 1. A process comprising:receiving a hydrocarbon feed stream comprising carbon dioxide;separating the hydrocarbon feed stream into a light hydrocarbon stream and a heavy hydrocarbon stream;separating the light hydrocarbon stream into a carbon dioxide-rich stream and a carbon dioxide-lean stream; andfeeding the carbon dioxide-lean stream into a hydrocarbon sweetening process, thereby increasing the processing capacity of the hydrocarbon sweetening process compared to the processing capacity of the hydrocarbon sweetening process when fed the hydrocarbon feed stream.2. The process of wherein the hydrocarbon sweetening process comprises:absorbing at least some of the carbon dioxide from the carbon dioxide-lean stream with a solvent;separating the solvent from the carbon dioxide-lean stream; andreleasing at least some of the carbon dioxide from the solvent by lowering the pressure of the solvent.3. The process of wherein the hydrocarbon sweetening process comprises: separating at least some of the carbon dioxide from the carbon dioxide-lean stream using a membrane.5. The process of wherein the hydrocarbon feed stream contains from about 30 percent to about 80 percent carbon ...

SYSTEMS AND METHODS OF OPTIMIZING Y-GRADE NGL ENHANCED OIL RECOVERY FLUIDS

Systems and methods of optimizing enhanced oil recovery fluids in the form of a hydrocarbon foam, an emulsion based foam, an emulsion, and a gelled enhanced oil recovery fluid, each comprising Y-Grade NGL, which is an unfractionated hydrocarbon mixture that comprises ethane, propane, butane, isobutane, and pentane plus, wherein the unfractionated hydrocarbon mixture is a byproduct of a condensed and demethanized hydrocarbon stream. 1. A method of optimizing a Y-Grade NGL enhanced oil recovery fluid , comprising:gathering geostatic data and reservoir fluid data of a hydrocarbon bearing reservoir;assessing availability of a supply of Y-Grade NGL and a gas;using the reservoir fluid data and data regarding the composition of the Y-Grade NGL and the gas to determine an equation of state;generating a hydrocarbon foam through a foam generation module, wherein the foam generation module includes customizing a surfactant to be mixed with the Y-Grade NGL and the gas to form the hydrocarbon foam, adjusting foam stability of the hydrocarbon foam, customizing the hydrocarbon foam, and determining a foam rheology of the hydrocarbon foam;formulating computational algorithms for the equation of state and the foam rheology;formulating a 3-D compositional reservoir simulation model as represented by the geostatic data, previously matched historical production and pressure data, and the computational algorithms to simulate an enhanced and/or improved oil recovery process of the reservoir using the hydrocarbon foam; andrunning multiple simulations for different hydrocarbon foams generated by the foam generation module to determine which hydrocarbon foam will obtain an optimum fluid recovery.2. The method of claim 1 , further comprising customizing the surfactant by selecting at least one of a siloxane surfactant claim 1 , a fluorosurfactant claim 1 , a fatty acid ester claim 1 , a glyceride claim 1 , a silicon emulsifier claim 1 , and a hydrophobic silica powder as the surfactant.3. ...

PROCESS AND APPARATUS FOR PRODUCING A MIXED FEED STREAM FOR A STEAM REFORMING PLANT

This invention relates to a process and an apparatus for producing a mixed feed stream for a steam reforming plant from a first feed stream containing methane and a second feed stream comprising higher hydrocarbons, olefins and diolefins. According to the invention, the required hydrogenation of the mono- and diolefins and the hydrodesulfurization of the organic sulfur compounds contained in the feed stream are carried out step by step under process conditions optimized in each case. Furthermore, the inlet temperature into the respective reaction zone is controlled such that overheating of the feedstocks is avoided, which otherwise leads to undesired coke deposits, cloggings and the accelerated deactivation of the catalysts used. 118-. (canceled)19. A process for producing a mixed feed stream for a steam reforming plant containing at least one reforming stage , the mixed feed stream comprising a first feed stream containing methane and a second feed stream comprising higher hydrocarbons , olefins and diolefins , wherein the first and/or the second feed stream also contains sulfur compounds , and wherein the process comprises the following steps:a) providing the first feed stream and the second feed stream;b) heating the first feed stream in a first heating device;c) combining and mixing at least a part of the first feed stream with the second feed stream, introducing this mixture into a first hydrogenation zone, at least partly converting the diolefins in the first hydrogenation zone under diolefin hydrogenation conditions, discharging a diolefin hydrogenation product stream from the first hydrogenation zone;d) introducing the diolefin hydrogenation product stream into a second hydrogenation zone, at least partly converting the olefins in the second hydrogenation zone under olefin hydrogenation conditions, discharging an olefin hydrogenation product stream from the second hydrogenation zone;e) introducing the olefin hydrogenation product stream into a third ...

Process for simultaneous removal of arsenic and sulphur from hydrocarbon streams

The present invention describes a process for the simultaneous removal of arsenic and sulphur compounds from hydrocarbon streams of fossil origin, wherein hydrocarbon streams of fossil origin resulting from the retorting process of schist are purified by direct contact with hydrated iron oxide, such as goethite (α-FeOOH) in its raw natural form (limonite ore particles).

Process and plant for separation of a hydrocarbon mixture

The invention relates to a process for separating a component mixture (K) comprising hydrogen, methane, hydrocarbons having two carbon atoms and hydrocarbons having three or more carbon atoms, wherein in a deethanization at least a portion of the component mixture (K) is subjected to a first partial condensation by cooling from a first temperature level to a second temperature level at a first pressure level to obtain a first gas fraction (G) and a first liquid fraction (C), at least a portion of the first gas fraction (G) is subjected to a second partial condensation by cooling from the second temperature level to a third temperature level at the first pressure level to obtain a second gas fraction (G) and a second liquid fraction (C), and at least a portion of the first liquid fraction (C) and at least a portion of the second liquid fraction (C) are subjected to a rectification to obtain a third gas fraction (G) and a third liquid fraction (C). The first liquid fraction (C) or its part subjected to the rectification and the second liquid fraction (C) or its part subjected to the rectification are expanded to a second pressure level and the rectification is carried out at the second pressure level, the first pressure level being 25 to 35 bar and the second pressure level being 14 to 17 bar. An overhead gas formed during the rectification is cooled to −25 to −35° C. and partially condensed, wherein a condensed portion of the overhead gas is used partially or completely as a reflux in the rectification and an uncondensed portion of the overhead gas is provided partially or completely as the third gas fraction (G). The present invention likewise provides a corresponding plant (). 1. Process for separating a component mixture (K) comprising hydrogen , methane , hydrocarbons having two carbon atoms and hydrocarbons having three or more carbon atoms , comprising a deethanization and a demethanization subsequent to the deethanization , wherein{'b': 1', '1, 'in the ...

GAS CONDITIONING PROCESS AND SYSTEM FOR EXTRACTING A CONDENSABLE VAPOUR FROM A SUPPLIED GAS

A process for extracting a condensable vapour from a supplied gas, comprising the steps of: i) condensing the condensable vapour by cooling the supplied gas at a condensing surface, such that the supplied gas is divided into at least one condensed fraction and a product gas; while ii) removing the at least one condensed fraction from the condensing surface by mechanical scraping means. 2. The process as claimed in claim 1 , wherein the supplied gas is a product of coal gasification or pyrolysis of a carbonaceous feed ; and wherein the condensable vapor comprises hydrocarbon which has a non-gaseous phase at a standard ambient temperature of 25° C. and pressure of 1 atm.3. The process as claimed in claim 2 , wherein the supplied gas comprises methane; and wherein the condensable vapor comprises tars.4. The process as claimed in claim 1 , further comprising a step of controlling supplied gas temperature with a supplied gas heat exchanger prior to the step of cooling the supplied gas; wherein the supplied gas prior to the cooling step is substantially free from the at least one condensed fraction.5. The process as claimed in claim 1 , further comprising a step of filtering supplied gas with a filter prior to the step of cooling said supplied gas.61. The process as claimed in claim 1 , further comprising a step of scrubbing the product gas with a scrubber; wherein the scrubbed product gas is subsequently dried using a gas dryer.7. The process as claimed in claim 1 , wherein step ii) is repeated at further condensing surfaces using the product gas of the previous step as an input gas claim 1 , and steps c)-d) are repeated at further locations using a condensed fraction a further condensing surfaces and/or the heated condensed fraction of the previous step as input material claim 1 ,8. A gas conditioning system for carrying out the process as claimed in claim 1 , comprising at least one condensing unit claim 1 , wherein a thermally controlled conveying means is provided ...

Method of Fractionating Mixtures of Low Molecular Weight Hydrocarbons

The invention relates to the field of membrane gas separation and can be used for the energy-efficient fractionation of hydrocarbon mixtures, including separation and drying of natural and associated petroleum gases. Proposed is a method of fractionating mixtures of low molecular weight hydrocarbons which is based on the capillary condensation of the components of a mixture in the pores of microporous membranes with uniform porosity and a pore diameter in a range of 5 to 250 nm, wherein, for capillary condensation, the temperature of the membrane and the pressure on the permeate side are kept below the temperature and the pressure of the feed mixture such that the equilibrium pressure of the saturated vapors of the separated components on the permeate side is lower than the partial pressure of the components in the feed stream. This method makes it possible to significantly increase membrane permeability with respect to condensable components (over 500 m/(m·atm·h) for n-butane), and also component separation factors (the n-CH/CHseparation factor is greater than 60 for a mixture having an associated petroleum gas composition), while also making it possible to dispense with deep cooling of the gas stream fed to a membrane module, and to carry out gas separation under insignificant cooling of the membrane on the permeate side (down to −50° C.) For more effective gas separation, permeate is collected in a liquid state. A technical effect of the invention resides in providing a method that makes it possible to efficiently remove high-boiling hydrocarbons (C-C) from natural gas and associated petroleum gases, as well as to obtain gas mixtures with a constant composition. 1. A method of fractionating mixtures of low molecular weight hydrocarbons characterized in that the separation of the feed mixture into permeate and retentate is carried out using a microporous membrane having uniform porosity and a pore diameter ranging from 5 to 250 nm , wherein the temperature of the ...

Carbon Dioxide Fractionalization

A method comprises separating a hydrocarbon feed stream having carbon dioxide into a heavy hydrocarbon stream and a light hydrocarbon stream. The light hydrocarbon stream is separated into a carbon dioxide-rich stream and a carbon dioxide-lean stream. At least a portion of the carbon dioxide-lean stream is fed to a hydrocarbon sweetening process. Another method comprises receiving a hydrocarbon feed stream that comprises 30 molar percent to 80 molar percent carbon dioxide. A heavy hydrocarbon stream is separated from the hydrocarbon feed stream, wherein the heavy hydrocarbon stream comprises at least 90 molar percent C 3+ hydrocarbons. A carbon dioxide-rich stream is separated from the hydrocarbon feed stream, wherein the carbon dioxide-rich stream comprises at least 95 molar percent carbon dioxide.

Process for separating a component mixture and separation apparatus

A process for separating a component mixture comprising essentially hydrocarbons having two or two or more carbon atoms, methane and hydrogen using a distillation apparatus () is proposed. Fluid (a, c, e, g, i) from the component mixture is cooled stepwise to a first pressure level, with separation of first condensates (b, d, f, h, j) out of the fluid (a, c, e, g, i) in each case. Fluid (k) from the component mixture that remains in gaseous form thereafter is expanded to a second pressure level in an expander, giving a second condensate (I). Fluid from the first condensates (b, d, f, h, j) is expanded from the first pressure level to the second pressure level and fed together with the fluid from the second condensates into the distillation apparatus (10) which is being operated at the second pressure level. The present invention likewise provides a corresponding separation apparatus. 21013. Process according to claim 1 , wherein the distillation apparatus () has a condenser () which is operated at the temperature level above the second temperature level.31110. Process according to claim 2 , wherein the fluid from the condensates (b claim 2 , d claim 2 , f claim 2 , h claim 2 , j) is fed at least partly into the first and second distillation units () of the distillation apparatus ().412101312. Process according to claim 2 , wherein a gaseous stream of matter (m) is drawn off from the second distillation unit () of the distillation apparatus () claim 2 , cooled down in the condenser () and used to provide a liquid return stream to the second distillation unit ().5. Process according to claim 1 , wherein the liquid stream of matter (o) is expanded from the second pressure level to a pressure level below the second pressure level.6. Process according to claim 1 , wherein the fluid (a claim 1 , c claim 1 , e claim 1 , g claim 1 , i) from the component mixture (C2minus) is cooled down using an ethane and/or ethylene coolant at different pressure levels from the first ...

HYDROCARBON GAS RECOVERY METHODS

A method of recovery of rich gas where the rich gas is a hydrocarbon gas comprising less than 50 mole % methane is disclosed. The method comprises the steps of gathering the low pressure gas, compressing the gathered gas, cooling the compressed gas in a condenser so that a portion of the compressed gas condenses to form a liquefied gas and liquefied gas vapour in the condenser, and discharging the liquefied gas and liquefied gas vapour from the condenser, in which the cooling of the compressed gas is performed using at least one heat exchanger (). 124-. (canceled)25. A method of recovery of rich gas , the method comprising:gathering the rich gas, wherein the rich gas is a hydrocarbon gas comprising less than 50 mole % methane;compressing the gathered gas;cooling the compressed gas in a condenser so that a portion of the compressed gas condenses to form a liquefied gas and liquefied gas vapour in the condenser, wherein the cooling of the compressed gas is performed using at least one heat exchanger; anddischarging the liquefied gas and liquefied gas vapour from the condenser26. The method of claim 25 , wherein the rich gas has a gauge pressure of less than or equal to 1379.0 kPa (200 psi).27. The method of claim 25 , wherein the liquefied gas and liquefied gas vapour is discharged into one or more storage means.28. The method of claim 27 , wherein the at least one storage means is a storage tank.29. The method of claim 25 , wherein the at least one heat exchanger is a fan-cooled condenser.30. The method of claim 25 , wherein the rich gas is gathered from a source comprising a two-phase separator claim 25 , a treater unit claim 25 , a vapour recovery tower claim 25 , an oil storage tank claim 25 , or a combination thereof.31. The method of claim 25 , wherein the step of compressing the gas is performed using at least one compression pump.32. The method of claim 31 , wherein:each compression pump is controlled by a control unit,the control unit comprises a central ...

PROCESS AND APPARATUS FOR RECOVERING HYDROCRACKED EFFLUENT WITH VACUUM SEPARATION

A vacuum separator is used to separate a pitch stream from a slurry hydrocracking reactor upstream of the product fractionation column. The process and apparatus removes pitch from the product streams to enable easier separation of light VGO from heavy VGO in a fractionation column. 1. A process for slurry hydrocracking comprising:slurry hydrocracking a hydrocarbon feed in a slurry hydrocracking reactor to provide a hydrocracked effluent stream;separating a hot hydrocracked stream, taken from said hydrocracked effluent stream, under vacuum pressure to provide a vapor vacuum stream and a pitch stream;recycling said pitch stream to slurry hydrocracking; andfractionating said vapor vacuum stream.2. The process of further comprising separating said hydrocracked effluent stream under high pressure to provide a hot vapor stream and hot liquid stream and said hot hydrocracked stream is taken from said hot liquid stream.3. The process of further comprising separating said hot liquid stream under low pressure to provide a low pressure vapor stream and said hot hydrocracked stream and separating said low pressure vapor stream into a cold vapor stream and a cold liquid stream and fractionating a cold hydrocracked stream taken from said cold liquid stream.4. The process of further comprising operating said slurry hydrocracking reactor to achieve at least 95% pitch conversion and at least 70 wt % pitch in the pitch stream.5. The process of further comprising recycling a mass ratio of pitch to feed of about 0.2 to about 1.6. The process of further comprising cooling said vapor vacuum stream and separating said vapor vacuum stream into a vapor vacuum stream and a condensed vacuum stream and fractionating said condensed vacuum stream under vacuum pressure.7. The process of wherein said vapor vacuum stream is a primary vapor vacuum stream and said condensed vacuum stream is a primary condensed vacuum stream and further comprising cooling said primary vapor vacuum stream and ...

Enhanced Distillate Oil Recovery from Thermal Processing and Catalytic Cracking of Biomass Slurry

A method for thermal processing and catalytic cracking of a biomass to effect distillate oil recovery can include, particle size reduction. slurrying the biomass with a carrier fluid to create a reaction mixture, slurrying a catalyst with a carrier fluid to create a catalyst slurry, heating the reaction mixture and/or the catalyst slurry, and depolymerizing the reaction mixture with the catalyst. The reaction mixture can undergo distillation and fractionation to produce distillate fractions that include naphtha, kerosene, and diesel. In some embodiments, thermal processing and catalytic cracking includes vaporization of the biomass followed by distillation and fractionation. In some embodiments, a resulting distillate can be used as a carrier fluid. In some embodiments, the method can include desulfurization, dehydration, and/or decontamination. 1. A method of thermal processing and catalytic cracking of a biomass , the method comprising the steps of:(a) slurrying said biomass within a first carrier fluid to create a reaction mixture;(b) slurrying a first catalyst within a second carrier fluid to create a catalyst slurry; and(c) mixing said catalyst slurry and said reaction mixture to form a catalytic active biomass slurry, wherein said catalytic active biomass is at a temperature above a catalyst activation temperature of said first catalyst to initiate catalytic cracking.2. The method of further comprising:(d) distilling a carrier fluid portion containing a plurality of residuals to enable said carrier fluid portion to be recycled.3. The method of further comprising:(d) directing a residual reaction mixture, wherein said residual reaction mixture is made up of a portion of said catalytic active biomass slurry, to a vaporizer for thermal processing.4. The method of further comprising:(d) dehydrating said reaction mixture to remove an amount of water.5. The method of further comprising:(d) dehydrating said reaction mixture to recover an amount of water.6. The method ...

CHAR SEPARATOR

The present invention relates to an apparatus that is part of a reusable fuel processing unit that allows the absorption of char contained within vapor that is leaving the reactor including a gear box, gearbox housing, support flange and seal, exhaust housing, exhaust port, connecting flange, screw top split housing, vertical steal housing, three augers with drive shafts on each auger contained within the steel housing, discharge flange, support ring, expansion cart, and cam followers. 1. (canceled)2. A method of producing fuel comprising:vaporizing a carbon-based material into hydrocarbon chain vapors;capturing the hydrocarbon chain vapors and condensing the same into high carbon chain fuel;reheating the high carbon chain fuel until it vaporizes to break high carbon chains into lower carbon chains to produce low carbon vapor; andcollecting the low carbon vapor.3. The method of claim 2 , wherein the carbon-based material is plastic.4. The method of claim 2 , wherein the carbon-based material is heated at a prescribed temperature until the carbon-based material is vaporized.5. The method of claim 4 , wherein the heat is controlled to manipulate the hydrocarbon chain vapors.6. The method of claim 2 , wherein the carbon-based material is pressurized at a prescribed pressure until the carbon based material is vaporized. This application priority to U.S. Provisional Patent Application No. 62/318,178, entitled “CHAR SEPARATOR,” filed Apr. 4, 2016. The entire contents and disclosures of this patent application is incorporated herein by reference in its entirety.This application discloses material that is related to material disclosed in a nonprovisional application filed on Dec. 9, 2015, titled “Heated Airlock Feeder Unit”, incorporated herein in its entirety by reference as well as the non-provisional application filed on Dec. 9, 2015 titled “Cyclonic Cooling System” incorporated herein in its entirety by reference.This application relates to an apparatus that is part of ...

METHOD FOR RECOVERING A STREAM OF C2+ HYDROCARBONS IN A RESIDUAL REFINERY GAS AND ASSOCIATED INSTALLATION

This method comprises passing a residual stream into a flash drum to form a gaseous overhead flow and liquid bottom flow, and feeding the bottom flow into a distillation column, 1. Method for recovering a C2+ hydrocarbons stream in a residual refinery gas , comprising:forming a residual stream from the residual refinery gas;feeding the residual stream into a flash drum to form a gaseous overhead flow and liquid bottom flow;feeding the bottom flow into a distillation column;cooling the overhead flow in a heat exchanger to form a cooled overhead flow;separating the cooled overhead flow into a liquid lower stream and into a gaseous top stream;feeding the lower stream into the distillation column above the bottom flow;recovering the C2+ hydrocarbons stream at a bottom of the distillation column;extracting a gaseous overhead stream at a head of the distillation column;forming at least one effluent stream from the overhead stream and/or from the top stream;heating the at least one effluent stream in a heat exchanger via heat exchange with the overhead flow;wherein separating the cooled overhead flow comprises feeding the cooled overhead flow into an absorber, and injecting a methane-rich stream into the absorber to place the cooled overhead flow in contact with the methane-rich stream.2. The method according to claim 1 , wherein the methane-rich stream is a liquid stream.3. The method according to claim 1 , wherein the molar content of methane in the methane-rich stream is higher than 90 mole %.4. The method according to claim 1 , wherein the methane-rich stream is formed from a thermal steam cracker claim 1 , without passing through the distillation column or through the flash drum.5. The method according to claim 1 , wherein the temperature of the residual stream before entering the flash drum is lower than −80° C.6. The method according to claim 1 , wherein the overhead flow circulates from the flash drum through the heat exchanger as far as the absorber without static ...

Method for purifying a gas rich in hydrocarbons

A process for the purification of a gas rich in hydrocarbons and comprising at least 10 ppm by volume of hydrocarbons having at least six carbon atoms nitrogen.

PROCESS FOR HEAT STABLE SALTS REMOVAL FROM SOLVENTS

An apparatus and a method for removing salts from a liquid are described. A first liquid containing at least one salt is mixed with magnetic composite particles. A subsequent separation of the particles from the liquid is achieved using an electromagnetic source. 2. The apparatus according to wherein the first liquid is an aqueous amine solvent.3. The apparatus according to wherein the amine solvent comprises at least one of methyldiethanolamine and alkanolamine.4. The apparatus according to wherein the at least one salt is formed by one or more protonated amine cations and one or more anions selected from SCN″ claim 1 , HCOO″ claim 1 , CH3COO″ claim 1 , and CH3CH2COO—.5. The apparatus according to wherein the magnetic composite particles comprise iron oxide magnetic particles.6. The apparatus according to wherein the magnetic composite particles comprise alginate.734. The apparatus according to further comprising a second liquid for cleaning the magnetic composite particles from adsorbed salt and a tank () in fluid communication with the mixing tank () for storing the second liquid claim 1 , wherein the second liquid is preferably water.8754. The apparatus according to claim further comprising a treated liquid tank () in fluid communication with the electromagnetic separator () for collecting first liquid which has been treated in the mixing tank ().9853. The apparatus according to further comprising a collecting tank () in fluid communication with the electromagnetic separator () and in fluid communication with the tank () for collecting the second liquid containing magnetic composite particles having at least a portion of the at least one salt adsorbed thereon.10. The apparatus according to whereinthe first liquid is an aqueous amine solvent, preferably comprising at least one of methyldiethanolamine and alkanolamine,the at least one salt is formed by one or more protonated amine cations and one or more anions selected from SCN˜, HCOO″, CH3COO″, and CH3CH2COO″, ...

Raffinate-2 Refining Method

Provided is a method of separating and refining 1-butene with a high purity and a high yield from a raffinate-2 stream, and recovering the refined 1-butene while maximizing an energy saving rate by using a high efficiency distillation column installed with a separation wall.

PROCESS FOR HEAT STABLE SALTS REMOVAL FROM SOLVENTS

An apparatus and a method for removing salts from a liquid are described. A first liquid containing at least one salt is mixed with magnetic composite particles. A subsequent separation of the particles from the liquid is achieved using an electromagnetic source. 2. The apparatus according to wherein the first liquid is an aqueous amine solvent.3. The apparatus according to wherein the amine solvent comprises at least one of methyldiethanolamine and alkanolamine.4. The apparatus according to wherein the at least one salt is formed by one or more protonated amine cations and one or more anions selected from SCN″ claim 1 , HCOO″ claim 1 , CH3COO″ claim 1 , and CH3CH2COO—.5. The apparatus according to wherein the magnetic composite particles comprise iron oxide magnetic particles.6. The apparatus according to wherein the magnetic composite particles comprise alginate.734. The apparatus according to further comprising a second liquid for cleaning the magnetic composite particles from adsorbed salt and a tank () in fluid communication with the mixing tank () for storing the second liquid claim 1 , wherein the second liquid is preferably water.8754. The apparatus according to further comprising a treated liquid tank () in fluid communication with the electromagnetic separator () for collecting first liquid which has been treated in the mixing tank ().9853. The apparatus according to further comprising a collecting tank () in fluid communication with the electromagnetic separator () and in fluid communication with the tank () for collecting the second liquid containing magnetic composite particles having at least a portion of the at least one salt adsorbed thereon.10. The apparatus according to whereinthe first liquid is an aqueous amine solvent, preferably comprising at least one of methyldiethanolamine and alkanolamine,the at least one salt is formed by one or more protonated amine cations and one or more anions selected from SCN˜, HCOO″, CH3COO″, and CH3CH2COO″,the ...

METHOD FOR FRACTIONATING A STREAM OF CRACKED GAS, USING AN INTERMEDIATE RECIRCULATION CURRENT, AND RELATED PLANT

This method comprises: 1. A method for fractionating a stream of cracked gas from a hydrocarbon pyrolysis plant to obtain an ethylene-rich cut and a C hydrocarbon-lean fuel stream , the method comprising:compressing the stream of raw cracked gas in at least one compressor a cooling and compression stage to form a compressed cracked gas stream;upstream cooling and partial condensing, in at least one upstream heat exchanger, of an upstream stream of cracked gas, obtained from the compressed cracked gas stream, and separation of an upstream liquid in at least one upstream balloon to form an intermediate stream of cracked gas pre-cooled at first temperature;intermediate cooling and partial condensing of the intermediate stream of cracked gas in an intermediate heat exchanger and separation of an intermediate liquid in an intermediate separating balloon to form a downstream stream of cracked gas cooled to a second temperature lower than the first temperature;downstream cooling and partial condensing of the downstream stream of cracked gas in at least one downstream heat exchanger to a third temperature lower than the second temperature;introducing of the downstream stream of partially condensed cracked gas from the downstream heat exchanger in a downstream separator;{'sub': 2', '2, 'sup': +', '+, 'recovering, at the head of the downstream separator a gas stream of high-pressure fuel, lean in C hydrocarbons, and recovering, at the bottom of the downstream separator, a downstream liquid, rich in C hydrocarbons;'}passing of the stream of high-pressure fuel through the downstream exchanger and the intermediate exchanger to form a heated high-pressure fuel stream;expanding of the heated high-pressure fuel stream in at least one first dynamic expansion device to obtain a stream of partially expanded fuel;heating of the stream of partially expanded fuel through the downstream exchanger and the intermediate exchanger;treating of at least one liquid stream obtained during the ...

NOx Removal Method

The invention relates to mixtures comprising molecular hydrogen, hydrocarbons, and nitrogen oxides; to processes for removing at least a portion of the nitrogen oxides therefrom; to equipment useful in such processes; and to the use of such hydrocarbons for, e.g., chemical manufacturing.

PROCESS AND SYSTEM FOR CRACKING A HYDROCARBON FEED

A process for hydrocracking a hydrocarbon feed is provided. The process comprises hydrocracking the hydrocarbon feed to produce a first hydrocracking product stream, separating the first hydrocracking product stream to form a gas stream and a liquid stream, hydrocracking the liquid stream to produce a second hydrocracking product stream, separating the second hydrocracking product stream to form a first light stream and a first heavy stream comprising benzene, toluene, xylene, C hydrocarbon, or a combination comprising at least one of the foregoing, purifying the gas stream to form a purified gas stream, and separating the purified gas stream to form at least two of a hydrogen stream, Cstream, Cstream, Cstream, Cstream, C stream, or a combination comprising at least one of the foregoing. 1. A process for hydrocracking a hydrocarbon feed , comprising:hydrocracking the hydrocarbon feed to produce a first hydrocracking product stream;separating the first hydrocracking product stream to form a gas stream and a liquid stream;hydrocracking the liquid stream to produce a second hydrocracking product stream;{'sub': '9+', 'separating the second hydrocracking product stream to form a first light stream and a first heavy stream comprising benzene, toluene, xylene, C hydrocarbon, or a combination comprising at least one of the foregoing;'}purifying the gas stream to form a purified gas stream; and{'sub': 1', '2', '3', '4', '5+, 'separating the purified gas stream to form at least two of a hydrogen stream, Cstream, Cstream, Cstream, Cstream, C stream, or a combination comprising at least one of the foregoing.'}2. The process of claim 1 , wherein the gas stream comprises hydrogen and C-Chydrocarbons and the liquid stream comprises C hydrocarbons.3. The process of claim 1 , wherein the second hydrocracking product stream comprises a C hydrocarbon claim 1 , benzene claim 1 , toluene claim 1 , xylene claim 1 , C hydrocarbon claim 1 , or a combination comprising at least one of the ...

Method for quenching pyrolysis product

A method for quenching a pyrolysis product, including: supplying a discharge stream from a liquid decomposition furnace to a first quench tower; supplying an upper discharge stream from the first quench tower to a second quench tower; supplying a discharge stream from a first gas decomposition furnace to the second quench tower; and supplying a discharge stream from a second gas decomposition furnace to the second quench tower.

PROCESS FOR IMPROVING PROPYLENE RECOVERY FROM FCC RECOVERY UNIT

The present subject matter relates generally to processes for propylene recovery. More specifically, the present subject matter relates to processes for enhanced recovery of propylene and liquid petroleum gas (LPG) from the fuel gas produced in fluid catalytic cracking (FCC) units by minimizing the light ends and propylene in the unstabilized gasoline which is used as lean oil for the primary absorber of the FCC gas concentration unit. 1. A process for the recovery of propylene comprising:(i) contacting a hydrocarbon feed with a catalyst in a fluid catalytic cracking process to produce a product stream;(ii) distilling the product stream in a fractionator to obtain heavier liquid products as side/bottom draws and a gaseous top product;(iii) cooling and condensing the gaseous top product and thereafter, separating the obtained gas-liquid mixture in a receiver to obtain a liquid fraction and a lighter gaseous fraction;(iv) sequentially sending the gaseous fraction obtained from step (iii) to a wet gas compressor train;(v) feeding a first portion of the liquid fraction obtained in step (iii) back to the fractionator;(vi) feeding a second portion of the liquid fraction obtained in step (iii) to at least one heat exchanger to produce a heated stream; and(vii) feeding the heated stream to a flash drum to produce a flashed light ends stream to be sent back to the wet gas compressor in step (iv) and a bottoms liquid stream wherein the bottoms stream is sent to one or more heat exchangers in step (vi) before routing the liquid stream to FCC gas concentration absorber.2. The process of wherein the one or more heat exchangers heats the liquid fraction from about 38° C. to about 80° C.3. The process of wherein the flashed light ends stream contains nearly 70% of the propylene in the flash drum feed.4. The process of wherein one or more of the heat exchanges uses a waste heat process stream.5. The process of wherein two heat exchangers are used to heat the liquid fraction.6. A ...

PROCESS AND APPARATUS FOR RECOVERING LIGHT HYDROCARBONS BY SPONGE ABSORPTION

A gas stream comprising LPG and naphtha hydrocarbons is absorbed with a sponge absorbent to recover LPG and naphtha hydrocarbons. The gas stream may comprise stripper off gas and/or PSA tail gas. An absorbent stream may be a stripped stream. The stripper off gas stream and the stripped stream may be obtained from a stripper that is downstream of a hydroprocessing unit. 1. A process for recovering hydrogen and hydrocarbons comprising:adsorbing impurities from hydrogen in a gaseous stream to provide a hydrogen stream and a tail gas stream comprising hydrocarbons;absorbing LPG hydrocarbons from said tail gas stream to produce an absorbent stream and an absorption stream comprising LPG and hydrogen; andabsorbing LPG hydrocarbons from said absorption stream to provide an absorption off-gas stream and a hydrocarbon-rich absorption stream.2. The process of further comprising hydroprocessing a hydrocarbon feed stream in a hydroprocessing reactor to provide a hydroprocessing effluent stream; and separating said hydroprocessing effluent stream to provide said gaseous stream and a liquid stream.3. The process of further comprising stripping said liquid stream to provide a stripped hydroprocessed stream and absorbing LPG hydrocarbons from said absorption stream by contact with said stripped hydroprocessed stream.4. The process of wherein stripping said liquid stream further provides a stripper off-gas stream and absorbing hydrocarbons from said stripper off-gas stream and said tail gas stream.5. The process of further comprising absorbing acid gases from said stripper off-gas stream before absorbing hydrocarbons from said stripper off-gas stream.6. The process of further comprising fractionating said absorbent stream to provide a hydrocarbon stream and absorbing LPG hydrocarbons from said tail gas stream by contact with said hydrocarbon stream.7. The process of further comprising compressing said absorption off-gas stream and adsorbing impurities from hydrogen in said ...

CYROGENIC SEPARATION OF LIGHT OLEFINS AND METHANE FROM SYNGAS

In accordance with the present invention, disclosed herein is a method comprising the steps for separating syngas and methane from C2-C4 hydrocarbons. Also disclosed herein, are systems utilized to separate syngas and methane from C2-C4 hydrocarbons. 1. A method comprising the steps of:a) providing a first product stream comprising syngas, methane, and C2-C4 hydrocarbons, wherein the first product stream has a first temperature;b) lowering the first temperature of the first product stream to a second temperature in a first heat exchange unit;c) separating at least a portion of the syngas from the first product stream in a cryogenic separation unit, thereby producing a second product stream comprising methane and C2-C4 hydrocarbons;d) separating at least a portion of the methane in the second product stream in a demethanizer, thereby producing a third product stream comprising C2-C4 hydrocarbons;e) recycling the at least a portion of the separated syngas to a Fischer-Tropsch reactor; andf) recycling the at least a portion of the separated methane to a syngas generation unit.2. The method of , further comprises the step of separating at least a portion of Hfrom the at least a portion of the separated syngas in a methane wash unit , thereby producing a methane wash product comprising methane and carbon monoxide , wherein at least a portion of separated methane in the method of is used to wash the at least a portion of the separated syngas in the methane wash unit.3. The method of claim 1 , wherein the separated syngas has a third temperature claim 1 ,wherein the method further comprises the steps of:{'sub': '2', 'lowering the third temperature of at least a portion of the separated syngas to a fourth temperature via a Nrefrigeration loop and a second heat exchange unit; and'}recycling energy from the portion of the separated syngas with the fourth temperature to the first product stream comprising syngas, methane, and C2-C4 hydrocarbons via the first heat exchange unit ...

METHOD FOR SEPARATING A HYDROCARBON MIXTURE, SEPARATING PLANT AND STEAM CRACKING PLANT

The invention relates to a method for separating a hydrocarbon mixture (C), which is obtained at least in part by steam cracking () and which contains at least hydrocarbons having one, two and three carbon atoms, including ethane and ethylene, a first fraction (C2+, C2−) initially being obtained from the hydrocarbon mixture (C) by separating off other components at least in part, said fraction containing the predominant part of the hydrocarbons having two or more carbon atoms previously contained in the hydrocarbon mixture (C) or the predominant part of the hydrocarbons having two or fewer carbon atoms previously contained in the hydrocarbon mixture (C), further fractions (C1, C2, C2H4, C3+, C2H6) subsequently being obtained from the first fraction (C2+, C2−). A fraction (R, S) containing ethane is separated off, in parallel with or downstream from the at least partial separation of the other components from the hydrocarbon mixture (C), in an amount which reduces the ethane content in the first fraction (C2+, C2−) to less than 25%, the fraction (R, S) containing ethane being low in or free from other hydrocarbons having two carbon atoms. The present invention further relates to a separation system (), to a corresponding steam cracking system and to a method for retrofitting a steam cracking system. 110. Method for separating a hydrocarbon mixture (C) , which is obtained at least in part by steam cracking () and which contains at least hydrocarbons having one , two and three carbon atoms , including ethane and ethylene , a first fraction (C2+ , C2−) initially being obtained from the hydrocarbon mixture (C) by separating off other components at least in part , said fraction containing the predominant part of the hydrocarbons having two or more carbon atoms contained in the hydrocarbon mixture (C) or the predominant part of the hydrocarbons having two or fewer carbon atoms previously contained in the hydrocarbon mixture (C) , further fractions (C1 , C2 , C2H4 , C3+ , ...

Enhanced Distillate Oil Recovery From Thermal Processing and Catalytic Cracking of Biomass Slurry

A method for thermal processing and catalytic cracking of a biomass to effect distillate oil recovery can include, particle size reduction. slurrying the biomass with a carrier fluid to create a reaction mixture, slurrying a catalyst with a carrier fluid to create a catalyst slurry, heating the reaction mixture and/or the catalyst slurry, and depolymerizing the reaction mixture with the catalyst. The reaction mixture can undergo distillation and fractionation to produce distillate fractions that include naphtha, kerosene, and diesel. In some embodiments, thermal processing and catalytic cracking includes vaporization of the biomass followed by distillation and fractionation. In some embodiments, a resulting distillate can be used as a carrier fluid. In some embodiments, the method can include desulfurization, dehydration, and/or decontamination.

Method for processing fischer-tropsch off-gas

This invention concerns a method for recovering carbon monoxide and carbon dioxide from Fischer-Tropsch off-gas by feeding Fischer-Tropsch off-gas through a column comprising an adsorbent bed, and discharging effluent, optionally rinsing the column and the adsorbent bed by feeding carbon dioxide and discharging effluent until at least 60% of the carbon monoxide that was present in the bed is discharged, pressurizing the column and adsorbent bed with carbon dioxide, rinsing the column and the adsorbent bed by feeding carbon dioxide, until at least 60% of the methane and optionally an amount equal to at least 50% of the carbon dioxide present at the commencement of this rinsing step is discharged, rinsing the column and adsorbent bed by feeding a mixture of hydrogen and nitrogen, pressurizing the column and adsorbent bed by feeding a mixture of hydrogen and nitrogen. With this method a feed comprising at least 50 vol % carbon monoxide can be produced. Furthermore, methane and carbon dioxide at a high pressure can be recovered from the Fischer-Tropsch gas. This can be fed to a gasifier or a reformer. In a preferred embodiment a gas comprising at least 80 vol % hydrogen is produced as well.

Process and System for Recovering Natural Gas Liquids (NGL) from Flare Gas Using Joule-Thomson (J-T) Cooling and Membrane Separation

A process and system for recovering natural gas liquids (NGL) using a combination of J-T cooling and membrane separation. The process involves compressing, separating, and cooling a flare gas stream comprising at least methane and Chydrocarbons prior to being introduced to a J-T valve. The cooled stream exiting the J-T valve is further separated, producing a NGL product stream and an uncondensed gas stream. The uncondensed gas stream is directed to a membrane separation step, which results in a C hydrocarbon enriched stream and a Chydrocarbon depleted stream. The Chydrocarbon enriched stream may be recycled back to the process to recover more NGL. 1. A system for recovering natural gas liquids from flare gas , comprising:(a) a compressor including a gas mixture stream inlet and a compressed gas outlet;(b) a first separation unit including a compressed gas inlet, a first hydrocarbon liquid stream outlet, and a first gas stream outlet, wherein the compressed gas inlet is in gas communication with the compressed gas outlet;(c) a heat-exchanger including a first gas stream inlet, a cooled gas stream outlet, a second gas stream inlet, and a heated gas stream outlet, wherein the first gas stream inlet is in gas communication with the first gas stream outlet of the separation unit;(d) a Joule-Thomson (J-T) valve including a J-T inlet and a J-T outlet, wherein the J-T inlet is in gas communication with the cooled gas stream outlet of the heat-exchanger;(e) a second separation unit including an expanded gas inlet, a second hydrocarbon liquid stream outlet, and a second gas stream outlet, wherein the expanded gas stream inlet is in gas communication with the J-T outlet of the J-T valve, wherein the second gas stream outlet is in gas communication with the second gas stream inlet of the heat-exchanger;(f) a third separation unit including a second hydrocarbon liquid stream inlet, a third gas stream outlet, and a third hydrocarbon liquid stream outlet, wherein the second ...

Carbon Dioxide and Hydrogen Sulfide Recovery System using a Combination of Membranes and Low Temperature Cryogenic Separation Processes

An acid gas purification system is described herein that includes a primary membrane system with a CO- and HS-enriched permeate stream effluent and a hydrocarbon stream effluent; a first compression stage arranged to receive the CO- and HS-enriched permeate stream and produce a compressed stream; and a cryogenic separation system to receive the compressed stream, the cryogenic separation system including a cooler followed by a fractionator, wherein the fractionator produces a CO- and HS liquid stream and a hydrocarbon gas stream. 1. An acid gas purification system , comprising:{'sub': 2', '2, 'a primary membrane system with a CO- and HS-enriched permeate stream effluent and a hydrocarbon stream effluent;'}{'sub': 2', '2, 'a first compression stage arranged to receive the CO- and HS-enriched permeate stream and produce a compressed stream; and'}{'sub': 2', '2, 'a cryogenic separation system to receive the compressed stream, the cryogenic separation system including a conditioner followed by a fractionator, wherein the fractionator produces a CO- and HS liquid stream and a hydrocarbon gas stream.'}2. The acid gas purification system of claim 1 , wherein the fractionator is a frozen COfractionator.3. The acid gas purification system of claim 1 , wherein the fractionator produces a bottoms stream claim 1 , and a portion of the bottoms stream is recycled to the first compression stage.4. The acid gas purification system of claim 1 , wherein the fractionator produces an overhead stream claim 1 , and the overhead stream is compressed in a second compression stage and blended with the hydrocarbon stream effluent of the primary membrane system.5. The acid gas purification system of claim 1 , wherein the fractionator produces a reflux stream claim 1 , and a portion of the reflux stream is heat-integrated with the compressed stream.6. The acid gas purification system of claim 5 , wherein the fractionator produces an overhead stream claim 5 , and the overhead stream and the ...

APPARATUS AND PROCESS FOR SEPARATING GASES FROM CATALYST AND REVAMP

In an FCC apparatus and process structured packing should be located at the very top of the stripping section in an upper region. The lower region below the structural packing may be equipped with fluidization equipment such as stripping media distributors and one or more gratings. This arrangement enables stripping of entrained hydrocarbons off the incoming catalyst immediately upon entry into the stripping section allowing the entrained hydrocarbon to exit the stripping section with minimized residence time to minimize post-riser cracking. Revamp of stripping sections with tall stripping sections should conducted in this way to improve performance and reduce down-time for equipment installation.

Enhanced olefin recovery method

An enhanced method is disclosed for recovering olefins from a cracking furnace effluent stream in an olefins plant. In accordance with this method, a liquid hydrocarbon stream, preferably obtained from the compressor area drier liquids and/or from the deethanizer or depropanizer, is injected into the reaction effluent stream to condition the reaction effluent stream for enhanced condensation against propylene refrigeration. Also disclosed is an olefins plant utilizing liquid hydrocarbon injection and an improvement to existing olefins recovery process technology using liquid hydrocarbon injection for vapor stream conditioning.

Ethylene plant refrigeration system

A refrigeration system for an ethylene plant uses a low pressure demethanizer and a binary refrigerant comprising a mixture of methane and ethylene or methane and ethane. The refrigeration composition may be constant throughout the system or separators may be used to divide the refrigerant into a methane-rich binary refrigerant and an ethylene- or ethane-rich binary refrigerant.

Cat cracker gas plant process for increased olefins recovery

The invention relates to a new process for more efficient separation and recovery of light olefins such as ethylene and propylene from a fluid catalytic cracking unit. The new process invention for recovering olefins from a mixture of cracked hydrocarbons from a fluid catalytic cracker comprises the steps of: (a) providing a mixture of cracked hydrocarbons including methane, ethylene, ethane, propylene, propane, butylene, butane and heavier hydrocarbons such as naphtha produced in a fluid catalytic cracker; (b) separating said mixture into (i) a first stream comprising substantially all of said ethane, ethylene, and methane and a major portion of said propane and propylene and (ii) a second stream comprising a portion of said butylene and butane, and a major portion of said heavier hydrocarbons; and (c) processing said first stream to recover the ethylene and propylene therefrom, and the details of such process described herein.

Cat cracker gas plant process for increased olefins recovery

The invention relates to a new process for more efficient separation and recovery of light olefins such as ethylene and propylene from a fluid catalytic cracking unit. The new process invention for recovering olefins from a mixture of cracked hydrocarbons from a fluid catalytic cracker comprises the steps of: (a) providing a mixture of cracked hydrocarbons including methane, ethylene, ethane, propylene, propane, butylene, butane and heavier hydrocarbons such as naphtha produced in a fluid catalytic cracker; (b) separating said mixture into (i) a first stream comprising substantially all of said ethane, ethylene, and methane and a major portion of said propane and propylene and (ii) a second stream comprising a portion of said butylene and butane, and a major portion of said heavier hydrocarbons; and (c) processing said first stream to recover the ethylene and propylene therefrom, and the details of such process described herein.

Process for the recovery of an ethylene and propylene containing stream from a cracked gas resulting from hydrocarbon cracking

Process for the recovery of an ethylene and propylene containing stream from a cracked gas resulting from cracking a hydrocarbon stream, wherein the cracked gas is treated in an absorptive demethanizer with a C4/C5 solvent at a temperature between -10 and - 40 °C to free the cracked gas from methane and hydrogen gas, whereafter the remaining stream is treated by distillation in a distillation unit to obtain a C4/C5 containing stream and the ethylene and propylene containing stream; whereafter the C4/C5 stream is treated with a hydrogen containing stream in a hydrogenation unit, whereafter a part of the hydrogenated C4/C5 stream is cooled to a temperature between -10 and -40°C and recycled to the absorptive demethanizer and a part of the hydrogenated C4/C5 stream is separated.

Catalytic cracking process

Method for reducing foam in a primary fractionator

The present invention includes methods for improving the operational parameters in primary fractionators which are experiencing diminished operation efficiencies due to deposits of polymerized hydrocarbon species. The invention comprises the step of adding a foam reducing amount of a foam reducing composition at the primary fractionator. A reduction in foaming is achieved whereby the operational efficiency of the process is improved based upon operation parameters including, but not limited to, liquid-gas contact ratio, product top temperature, pressure differentials, gasoline end point or combinations thereof.

Process for recovering ethylene from an olefin stream produced by a methanol to olefin reaction

A polymerizable grade of ethylene is recovered from an olefin-containing composition, prepared by the conversion of a methoxy compound to olefins, by a process which significantly reduces the requirements of the demethanizer distillation column through which hydrogen and methane are eliminated as impurities from the ethylene product without suffering economically unacceptable losses of ethylene to the hydrogen-methane fraction that is separated. The invention also provides for a C-2 splitter column of simplified requirements.

Olefin recovery method

A method is described for recovering olefins by condensation from the reaction effluent stream from a cracking furnace containing olefins and hydrogen wherein a membrane separator is employed to reject the hydrogen from the reaction effluent stream. In such a manner, the dew point temperature of the stream can be increased and the energy required to provide refrigeration for olefin condensation can be reduced. The method comprises primary condensation, vapor-liquid separation and membrane hydrogen rejection steps followed by a series of cascaded chilling and vapor-liquid separation steps. Condensate recovered is processed in a demethanizer to separate light end components. Also disclosed is an olefins plant employing a membrane separator for rejecting hydrogen to enhance the energy efficiency and/or facilitate the expansion of plant capacity.

Process for obtaining an ethylene-rich fraction

Poor C1/C2 separation occurs in the rectification column (T1) and C2-depleted fraction (8) is recycled before the adsorptive or permeative separation stage (A1). Process for recovering an ethylene-rich fraction comprises a combined adsorption and rectification from an olefin-containing mixed fraction withdrawn from a cracking furnace (S). A fraction containing H2, CH4 and CO is removed from the olefin-containing mixed fraction and the fraction containing the residual components is recycled to the rectification column. Poor C1/C2 separation occurs in the rectification column (T1) and C2-stripped fraction (8) is recycled before the adsorptive or permeative separation stage (A1).

Process, including PSA and membrane separation, for separating hydrogen from hydrocarbons

An improved process for separating hydrogen from hydrocarbons. The process includes a pressure swing adsorption step, a compression/cooling step and a membrane separation step. The membrane step relies on achieving a methane/hydrogen selectivity of at least about 2.5 under the conditions of the process.

一种全温程变压吸附气体分离提纯与净化的方法

本发明公开一种全温程变压吸附气体分离提纯与净化的方法，利用不同原料气体温度与压力、原料气体中各组分在‑80~200℃温度范围，以及0.03~4.0MPa压力范围内的吸附分离系数及物理化学性质的差异性，通过耦合各种分离方法调节变压吸附循环过程的吸附或解吸再生操作，拓展了变压或变温吸附分离过程仅限于通过压力或温度变化进行吸附与解吸再生循环操作的吸附理论，从而实现气体分离提纯与净化过程中的能量梯级利用、中浅冷与中高温变压吸附分离过程中吸附与解吸再生易于匹配和平衡的循环操作来分离提纯及净化各种原料气体，改变了传统吸附方法仅限于精制提纯的辅助作用并成为与精馏、吸收、萃取分离同等重要的基础性分离单元操作。

Hydrocarbon catalytic cracking process

Char separator and method

The present invention relates to an apparatus and method for processing reusable fuel wherein the apparatus comprises a support body and a plurality of augers disposed within the support body. The augers may be configured to rotate against a vapor flow to clean carbon char from vapors comprising condensable and non-condensable hydrocarbons. A drive system may be connected to drive and control the plurality of augers. An exhaust system is connected to the support body. A gearbox housing is connected to the exhaust system, wherein the drive system is accommodated in the gearbox housing. A ventilation system is disposed within the gearbox housing. Additionally, a thermal expansion system may be connected to the support body.

Cyclonic cooling system

Fractionation, the process used by refineries to break down carbon chains of petroleum compounds so that the desired carbon compound can be achieved. This process typically involves high heat, distillation, re-boiling, and energy intensive cooling processes. This application discloses an invention that will condense vapor produced by a pyrolysis reactor. This system uses one standard cyclone; three cascading cyclones with internal cyclonic rotation fins that force incoming vapor to maintain a fixed amount of rotation regardless of the vapor's velocity, heat sinks that increase condensation, reversing fins that force gases to reverse direction inside the cyclone decreasing vapor velocity to increase heat loss; a main collection tank that allows for the controlling of the fuel flash point; a compact low temperature coil cooler that uses 100 percent of the cooling surface that allows for the production of higher quality fuel; and, bubblers/scrubbers that produce back pressure into the pyrolysis reactor.

Char separator

The present invention relates to an apparatus that is part of a reusable fuel processing unit that allows the absorption of char contained within vapor that is leaving the reactor including a gear box, gearbox housing, support flange and seal, exhaust housing, exhaust port, connecting flange, screw top split housing, vertical steal housing, three augers with drive shafts on each auger contained within the steel housing, discharge flange, support ring, expansion cart, and cam followers.

Char separator and method

The present invention relates to an apparatus and method for processing reusable fuel wherein the apparatus comprises a support body and a plurality of augers disposed within the support body. The augers may be configured to rotate against a vapor flow to clean carbon char from vapors comprising condensable and non-condensable hydrocarbons. A drive system may be connected to drive and control the plurality of augers. An exhaust system is connected to the support body. A gearbox housing is connected to the exhaust system, wherein the drive system is accommodated in the gearbox housing. A ventilation system is disposed within the gearbox housing. Additionally, a thermal expansion system may be connected to the support body.

Fremgangsmåte for gjenvinning av alken

Precooling for ethylene recovery in dual demethanizer fractionation systems

Ethylene-containing feed gas to a cryogenic ethylene recovery system is cooled and condensed, prior to fractionation, by an improved method which utilizes a combination of one or more partial condensers followed by one or more dephlegmators. The improved method simplifies heat exchange equipment and reduces capital cost, and is particularly suited for processing a pressurized precooled feed gas from ethane cracking which contains less than about 1 mole % of propane plus propylene.

Olefin recovery from olefin-hydrogen mixtures

Olefins are recovered from thermally cracked gas or fluid catalytic cracking off gas by cooling the gas to condense a portion of the hydrocarbons, removing hydrogen from the noncondensed gas, and condensing the remaining hydrocarbons in a cold condensing zone using a dephlegmator which operates above about -166° F. This mode of operation minimizes the amount of methane in the condensate which is further processed in demethanizer column(s) and permits the condensation of ethylene at warmer temperatures than possible using a partial condenser in the cold condensing zone. The use of a dephlegmator at temperatures above about -166° F. minimizes or eliminates the formation and accumulation of unstable nitrogen compounds in the ethylene recovery system. Hydrogen is removed from the noncondensed gas in a process selected from polymeric membrane permeation, adsorptive membrane permeation, or pressure swing adsorption.

Verfahren zur Kälteversorgung der Tieftemperaturtrennungsstufe einer Olefinanlage

Es wird ein Verfahren zur Kältemittelversorgung einer Tieftemperaturtrennungsstufe in einer Anlage zur Herstellung von Olefinen aus kohlenwasserstoffhaltigem Einsatz (Olefinanlage) beschrieben. Während der, mit einem front end Deethanizer (3) nach Rohgasverdichtung (1), Vorkühlung und Trocknung (2) beginnenden, Trennsequenz wird zuerst in eine Olefinfraktion mit höchstens zwei Kohlenstoffatomen und eine Olefinfraktion mit mindestens drei Kohlenstoffatomen getrennt. Die Fraktion mit mindestens drei Kohlenstoffatomen wird zur weiteren Trennsequenz für längerkettige Olefine geführt (4). Die Fraktion mit höchstens zwei Kohlenstoffatomen wird über eine zwischengeschaltete katalytische Hydrierungsstufe (5) zur Tieftemperaturtrennungsstufe (6) geführt, die drei Kondensationsstufen im Temperaturbereich von -50°C bis -100°C umfasst. Aus der Tieftemperaturtrennungsstufe werden gasförmiger Wasserstoff (9) und Methan (10) abgeleitet, während die Olefine mit höchstens zwei Kohlenstoffatomen zu einer weiteren Fraktionierungsstufe geführt werden (7). Die Kälteleistung für die Tieftemperaturtrennungsstufe wird durch die Verdampfung eines Teils der im front end Deethanizer entstehenden flüssigen Ethylenfraktion (8) über Wärmetauschern zur Verfügung gestellt. Die verdampfte Ethylenfraktion wird zur Rohgasverdichtung zurückgeführt (11).

Precooling for ethylene recovery in dual demethanizer fractionation systems

Method for providing refrigeration to the cryogenic separation stage of an olefin plant

Es wird ein Verfahren zur Kältemittelversorgung einer Tieftemperaturtrennungsstufe in einer Anlage zur Herstellung von Olefinen aus kohlenwasserstoffhaltigem Einsatz (Olefinanlage) beschrieben. Während der, mit einem front end Deethanizer (3) nach Rohgasverdichtung (1), Vorkühlung und Trocknung (2) beginnenden, Trennsequenz wird zuerst in eine Olefinfraktion mit höchstens zwei Kohlenstoffatomen und eine Olefinfraktion mit mindestens drei Kohlenstoffatomen getrennt. Die Fraktion mit mindestens drei Kohlenstoffatomen wird zur weiteren Trennsequenz für längerkettige Olefine geführt (4). Die Fraktion mit höchstens zwei Kohlenstoffatomen wird über eine zwischengeschaltete katalytische Hydrierungsstufe (5) zur Tieftemperaturtrennungsstufe (6) geführt, die drei Kondensationsstufen im Temperaturbereich von -50°C bis -100°C umfasst. Aus der Tieftemperaturtrennungsstufe werden gasförmiger Wasserstoff (9) und Methan (10) abgeleitet, während die Olefine mit höchstens zwei Kohlenstoffatomen zu einer weiteren Fraktionierungsstufe geführt werden (7). Die Kälteleistung für die Tieftemperaturtrennungsstufe wird durch die Verdampfung eines Teils der im front end Deethanizer entstehenden flüssigen Ethylenfraktion (8) über Wärmetauschern zur Verfügung gestellt. Die verdampfte Ethylenfraktion wird zur Rohgasverdichtung zurückgeführt (11). The invention relates to a process for the supply of a cryogenic separation stage in a plant for the production of olefins from hydrocarbon-containing feedstock (olefin plant). During the separation sequence beginning with a front end deethanizer (3) after crude gas compression (1), pre-cooling and drying (2), first an olefin fraction having at most two carbon atoms and an olefin fraction having at least three carbon atoms are separated. The fraction with at least three carbon atoms is led to the further separation sequence for longer-chain olefins (4). The fraction of at most two carbon atoms is passed through an intermediate catalytic hydrogenation ...

Precooling for ethylene recovery in dual demethanizer fractionation systems

Ethylene-containing feed gas to a cryogenic ethylene recovery system is cooled and condensed, prior to fractionation, by an improved method which utilizes a combination of one or more partial condensers followed by one or more dephlegmators. The improved method simplifies heat exchange equipment and reduces capital cost, and is particularly suited for processing a pressurized precooled feed gas from ethane cracking which contains less than about 1 mole% of propane plus propylene.

Cryogenic separation

A process for separating a hydrocarbon mixture containing an alkene, a corresponding alkane having the same number of carbon atoms as the alkene and at least one heavier hydrocarbon component comprises the steps of: a) feeding the hydrocarbon mixture to a first distillation tower (40) having an upper reflux stage; b) recovering a first overhead vapor stream (40V) rich in alkane and alkene from the first distillation tower (40) and passing said overhead vapor stream (40V) to a middle distillation stage of a second distillation tower (50); c) recovering a second overhead vapor stream (50V) rich in alkene from the second distillation tower (50); d) adiabatically compressing the second overhead vapor stream (50V) and passing said compressed vapor to a reboiler stage (50B) of the second distillation tower (50) to cool and condense the compressed vapor and heat a liquid reboiler stream.

Recovery of propylene and ethylene from offgases

A system and process for the recovery of ethylene and propylene from a gas stream, such as a refinery offgas stream. The process comprises withdrawing, cooling, and recovering an overhead vapor stream from a single distillation column (20). The process includes withdrawing a liquid C3+, C4+, C5+ or C6+ bottoms product stream (4) and recycling (5) a portion of the bottoms stream (4) to maintain an overhead column condenser (28) at temperature refrigeration levels of above -140 °F and withdrawing a vapor side stream rich in propylene or ethylene-propylene.

Ethylene plant refrigeration system

A refrigeration system for an ethylene plant uses a low pressure demethanizer (12) and a binary refrigerant (20) comprising a mixture of methane and ethylene or methane and ethane. The refrigeration composition may be constant throughout the system or separators (88, 108, 120, 128) may be used to divide the refrigerant into a methane-rich binary refrigerant (140) and an ethylene- or ethane-rich binary refrigerant (142).

Enhanced olefin recovery process

An enhanced method is disclosed for recovering olefins from a cracking furnace effluent stream in an olefins plant. In accordance with this method, a liquid hydrocarbon stream, preferably obtained from the compressor area drier liquids and/or from the deethanizer or depropanizer, is injected into the reaction effluent stream to condition the reaction effluent stream for enhanced condensation against propylene refrigeration. Also disclosed is an olefins plant utilizing liquid hydrocarbon injection and an improvement to existing olefins recovery process technology using liquid hydrocarbon injection for vapor stream conditioning.

Olefin recovery method

Olefin recovery from hydrocarbon streams.

Improved recovery of olefins

올레핀 플랜트에서 분해노 유출물 스트림으로 부터 올레핀을 회수하기 위한 개선된 방법이 개시되어 있다. 본 방법에 따라, 바람직하게는 압축기 부위의 건조기 액체 및/또는 탈 에탄기 또는 탈 프로판 기로 부터 수득한 액체 탄화수소 스트림을 반응 유출물 스트림에 주입하여 프로필렌 냉각에 의한 개선된 응축을 위해 반응 유출물 스트림을 조절한다. An improved process for recovering olefins from cracking furnace effluent streams in an olefin plant is disclosed. According to the method, the reaction effluent stream is preferably injected into the reaction effluent stream by pouring a liquid hydrocarbon stream from the dryer liquid and / or the deethane or depropane groups at the compressor site to the reaction effluent stream. Adjust 또한 액체 탄화수소 주입을 사용하는 올레핀 프랜트 및 증기 스트림 조절을 위해 액체 탄화수소 주입을 사용하는 현존의 올레핀 회수 공정 기술의 기선 등이 기재되어 있다. Also described are olefin plants using liquid hydrocarbon injection and baselines of existing olefin recovery process techniques using liquid hydrocarbon injection for vapor stream control.

Olefin recovery from olefin-hydrogen mixtures

Olefins are recovered from thermally cracked gas or fluid catalytic cracking off gas by cooling the gas to condense a portion of the hydrocarbons, removing hydrogen from the noncondensed gas, and condensing the remaining hydrocarbons in a cold condensing zone using a dephlegmator which operates above about -166°F. This mode of operation minimizes the amount of methane in the condensate which is further processed in demethanizer column(s) and permits the condensation of ethylene at warmer temperatures than possible using a partial condenser in the cold condensing zone. The use of a dephlegmator at temperatures above about -166°F minimizes or eliminates the formation and accumulation of unstable nitrogen compounds in the ethylene recovery system. Hydrogen is removed from the noncondensed gas in a process selected from polymeric membrane permeation, adsorptive membrane permeation, or pressure swing adsorption.

Olefin recovery from olefin-hydrogen mixtures

Method for fractionating a stream of cracked gas to obtain an ethylene-rich cut and a stream of fuel, and related installation

This method includes introducing a downstream stream ( 140 ) of cracked gas from a downstream heat exchanger ( 58 ) in a downstream separator ( 60 ) and recovering, at the head of the downstream separator ( 60 ), a high-pressure fuel gas stream ( 144 ). The method includes the passage of the stream ( 144 ) of fuel through the downstream exchanger ( 58 ) and an intermediate exchanger ( 50, 54 ) to form a reheated high-pressure fuel stream ( 146 ), the expansion of the reheated high-pressure fuel stream ( 146 ) in at least a first dynamic expander ( 68 ) and the passage of the partially expanded fuel stream ( 148 ) from the intermediate exchanger ( 50, 54 ) in a second dynamic expander ( 70 ) to form an expanded fuel stream ( 152 ). The expanded fuel stream ( 152 ) from the second dynamic expander ( 70 ) is reheated in the downstream heat exchanger ( 58 ) and in the intermediate heat exchanger ( 50, 54 ).

用于分馏裂化气流以获取富乙烯馏分和燃料流的分馏方法以及相关的设备

用于分馏裂化气流以获取富乙烯馏分和燃料流的分馏方法以及相关的设备。所述分馏方法包括：将来自下游热交换器（58）的下游裂化气流（140）引入下游分离器（60）中和在下游分离器（60）的顶部回收高压燃料气流（144）。所述分馏方法包括：使燃料流（144）经过下游交换器（58）和中间交换器（50，54），以形成加热的高压燃料流（146）；使加热的高压燃料流（146）在至少一第一动态膨胀装置（68）中膨胀；和使来自中间交换器（50，54）的部分膨胀的燃料流（148）在第二动态膨胀装置（70）中经过，以形成膨胀的燃料流（152）。在下游热交换器（58）中和中间热交换器（50，54）中对来自第二动态膨胀装置（70）的膨胀的燃料流（152）进行加热。

Method for fractionating a cracked gas flow in order to obtain an ethylene-rich cut and a fuel flow, and associated facility

The invention relates to a method for fractionating a cracked gas flow in order to obtain an ethylene-rich cut and a fuel flow, and associated facility. Said method comprises injecting a downstream cracked gas flow (140) from a downstream heat exchanger (58) into a downstream separator (60) and recovering a high-pressure gaseous fuel flow (144) at the head of the downstream separator (60). The method comprises passing the flow (144) of fuel through the downstream exchanger (58) and an intermediate exchanger (50, 54) to form a reheated high-pressure fuel flow (146), expanding the reheated high-pressure fuel flow (146) in at least one first dynamic expansion device (68) and passing the flow (148) of partially expanded fuel from the intermediate exchanger (50, 54) into a second dynamic expansion device (70) in order to form an expanded fuel flow (152). The expanded fuel flow (152) from the second dynamic expansion device (70) is reheated in the downstream heat exchanger (58) and in the intermediate heat exchanger (50, 54).

Method for fractionating a cracked gas flow in order to obtain an ethylene-rich cut and a fuel flow, and associated facility

The invention provides a method comprising injecting a downstream cracked gas flow (140) from a downstream heat exchanger (58) into a downstream separator (60) and recovering a high-pressure gaseous fuel flow (144) at the head of the downstream separator (60). The method comprises passing the flow (144) of fuel through the downstream exchanger (58) and an intermediate exchanger (50, 54) to form a reheated high-pressure fuel flow (146), expanding the reheated high-pressure fuel flow (146) in at least one first dynamic expansion device (68) and passing the flow (148) of partially expanded fuel from the intermediate exchanger (50, 54) into a second dynamic expansion device (70) in order to form an expanded fuel flow (152). The expanded fuel flow (152) from the second dynamic expansion device (70) is reheated in the downstream heat exchanger (58) and in the intermediate heat exchanger (50, 54).

Method for fractionating a stream of cracked gas, using an intermediate recirculation current, and related plant

The upstream, intermediate and downstream cooling steps is carried out without a heat exchanger respectively of an upstream stream of cracked gas (102), an intermediate stream of cracked gas (114) and a downstream stream of cracked gas (140) with an external refrigeration cycle.

Olefin recovery method

An enhanced method is disclosed for recovering olefins from a cracking furnace effluent stream in an olefins plant. In accordance with this method, a liquid hydrocarbon stream, preferably obtained from the compressor area drier liquids and/or from the deethanizer or depropanizer, is injected into the reaction effluent stream to condition the reaction effluent stream for enhanced condensation against propylene refrigeration. Also disclosed is an olefins plant utilizing liquid hydrocarbon injection and an improvement to existing olefins recovery process technology using liquid hydrocarbon injection for vapor stream conditioning.

개선된 올레핀의 회수방법

올레핀 플랜트에서 분해노 유출물 스트림으로부터 올레핀을 회수하기 위한 개선된 방법이 개시되어 있다. 본 방법에 따라, 바람직하게는 압축기 부위의 건조기 액체 및/또는 탈 에탄기 또는 탈 프로판기로부터 수득한 액체 탄하수소 스트림을 반응 유출물 스트림에 주입하여 프로필렌 냉각에 의한 개선된 응축을 위해 반응 유출물 스트림을 조절한다. 또한 액체 탄화수소 주입을 사용하는 올레핀 플랜트 및 증기 스트림 조절을 위해 액체 탄화수소 주입을 사용하는 현존의 올레핀 회수 공정 기술의 개선 등이 기재되어 있다.

Olefin recovery process

A method is described for recovering olefins by condensation from the reaction effluent stream from a cracking furnace containing olefins and hydrogen wherein a membrane separator is employed to reject the hydrogen from the reaction effluent stream. In such a manner, the dew point temperature of the stream can be increased and the energy required to provide refrigeration for olefin condensation can be reduced. The method comprises primary condensation, vapor-liquid separation and membrane hydrogen rejection steps followed by a series of cascaded chilling and vapor-liquid separation steps. Condensate recovered is processed in a demethanizer to separate light end components. Also disclosed is an olefins plant employing a membrane separator for rejecting hydrogen to enhance the energy efficiency and/or facilitate the expansion of plant capacity.

Distillation sequence for the purification and recovery of hydrocarbons

This invention is an improved distillation sequence for the separation and purification of ethylene from a cracked gas. A hydrocarbon feed enters a C2 distributor column. The top of the C2 distributor column is thermally coupled to an ethylene distributor column, and the bottoms liquid of a C2 distributor column feeds a deethanizer column. The C2 distributor column utilizes a conventional reboiler. The top of the ethylene distributor is thermally coupled with a demethanizer column, and the bottoms liquid of the ethylene distributor feeds a C2 splitter column. The ethylene distributor column utilizes a conventional reboiler. The deethanizer and C2 splitter columns are also thermally coupled and operated at a substantially lower pressure than the C2 distributor column, the ethylene distributor column, and the demethanizer column. Alternatively, a hydrocarbon feed enters a deethanizer column. The top of the deethanizer is thermally coupled to an ethylene distributor column, and the ethylene distributor column utilizes a conventional reboiler. The top of the ethylene distributor column is thermally coupled with a demethanizer column, and the bottoms liquid of the ethylene distributor column feeds a C2 splitter column. The C2 splitter column operates at a pressure substantially lower than the ethylene distributor column, the demethanizer column, and the deethanizer column.

Ethylene recovery method

Process for recovering ethylene comprising a precooling step

Membrane separation process for cracked gases

A process for recovering hydrogen from a cracking effluent wherein a cracking effluent is compressed, and then at least a portion of the hydrogen is separated from the cracking effluent prior to cooling of the cracking effluent to remove lower-boiling components. The separation of hydrogen is preferably accomplished by passing the cracking effluent through at least one semi-permeable membrane.

Ethylene plant refrigeration system

A refrigeration system for an ethylene plant uses a low pressure demethanizer (12) and a binary refrigerant (20) comprising a mixture of methane and ethylene or methane and ethane. The refrigeration composition may be constant throughout the system or separators (88, 108, 120, 128) may be used to divide the refrigerant into a methane-rich binary refrigerant (140) and an ethylene- or ethane-rich binary refrigerant (142).

Ethylene plant refrigeration system

A refrigeration system for an ethylene plant uses a low pressure demethanizer and a binary refrigerant comprising a mixture of methane and ethylene or methane and ethane. The refrigeration composition may be constant throughout the system or separators may be used to divide the refrigerant into a methane-rich binary refrigerant and an ethylene- or ethane-rich binary refrigerant.

REFRIGERATION SYSTEM FOR THE SEPARATION OF ETHYLENE.

Dentro de un proceso para la producción de etileno a partir de un gas de carga, que contiene el hidrógeno, el metano, el etileno y otros C2 así como unos hidrocarburos más pesados y comprendiendo este proceso un desmetanizador de baja presión, que trabaja a una presión por debajo de 2, 41 Mpa (350 libras por pulgada cuadrada) y dentro del cual el referido gas de carga es refrigerado por un sistema de refrigeración, un procedimiento para el enfriamiento del mencionado gas de carga mediante el empleo de un refrigerante binario dentro del referido sistema de refrigeración comprende las fases de: Comprimir una mezcla de metano y de etileno ó de metano y de etano para producir un refrigerante binario; de expansionar y de enfriar progresivamente el mencionado refrigerante binario a través de una serie de intercambiadores térmicos; de poner progresivamente el referido refrigerante binario progresivamente enfriado y el mencionado gas de carga dentro de los referidos intercambiadores térmicos en uncontacto de intercambio térmico entre si para enfriarlos y de este modo separar el mencionado hidrógeno y una parte del referido metano y producir unas corrientes líquidas de alimentación para el desmetanizador, las cuales están concentradas en el mencionado etileno y en otros C2 así como en unos hidrocarburos más pesados; de conducir las referidas corrientes líquidas de alimentación para el desmetanizador hacia el mencionado desmetanizador de baja presión; de producir una corriente bruta de la parte superior del desmetanizador, la cual consiste esencialmente en el metano; de poner la referida corriente bruta de la parte superior del desmetanizador en contacto con el mencionado refrigerante binario progresivamente enfriado; de separar entre si una corriente de reflujo del desmetanizador y una corriente neta de la parte superior del desmetanizador; como asimismo consiste este procedimiento en la fase de hacer retornar la referida corriente de reflujo del desmetanizador al mencionado ...

Method of cooling gas in the course of production of ethylene from starting gas

FIELD: production of ethylene from starting gas. SUBSTANCE: starting gas containing hydrogen, methane, ethylene and other C 2 --hydrocarbons and heavier hydrocarbons is cooled by means of cooling system employing binary mixture of cooling agents. Mixture of methane and ethylene or methane and ethane is compressed in compressor, thus obtaining binary mixture cooling agents. This binary mixture of cooling agents is gradually expanded, cooled and passed through row of heat exchangers where heat exchange between binary mixture being gradually cooled and starting gas takes place. Heat exchange is accompanied by cooling and separation of hydrogen and part of methane and obtaining flows of liquid in demethanizer at high concentration of ethylene and other C 2 -hydrocarbons and heavier hydrocarbons. These flows of liquid are fed to low-pressure demethanizer obtaining flow taken from upper part of demethanizer which mainly consists of methane which mainly consists of methane which is treated by gradually cooled binary mixture of cooling agents. flow of phlegm used for sprinkling the demethanizer and flow of end products taken from upper part of demethanizer are separated from said flow. Flow of phlegm thus obtained is returned to demethanizer. EFFECT: enhanced efficiency of cooling. 9 cl, 3 dwg, 1 tbl бэгобгс пы сэ (19) РОССИЙСКОЕ АГЕНТСТВО ПО ПАТЕНТАМ И ТОВАРНЫМ ЗНАКАМ ВИ ”2 190 169‘ 5 МК’ | 25 4 3/00 13) С2 12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ РОССИЙСКОЙ ФЕДЕРАЦИИ (21), (22) Заявка: 2000120539/06, 29.12.1998 (24) Дата начала действия патента: 29.12.1998 (30) Приоритет: 06.01.1998 Ш$ 09003,432 (46) Дата публикации: 21.09.2002 (56) Ссылки: СВ 1216446 А, 23.12.1970. ЗИ 410223 А, 05.01.1974. ЗЧ 423990 А, 11.09.1974. Ц$ 3625016 А, 07.12.1971. 4$ 3581511 А, 01.06.1971. (85) Дата перевода заявки РСТ на национальную фазу: 07.08.2000 (86) Заявка РСТ: 1$ 98/27700 (29.12.1998) (87) Публикация РСТ: М/О 99/35110 (15.07.1999) (98) Адрес для переписки: 101000, Москва, Малый Златоустинский ...

에틸렌 플랜트 냉동 시스템

에틸렌 플랜트용 냉동 시스템이 메탄 및 에틸렌 또는 메탄 및 에탄의 혼합물을 포함하는 2성분 냉매(20)와 저압 디메타나이저(12)를 사용한다. 냉각 조성물은 냉매를 메탄-리치 2성분 냉매(140)와 에틸렌- 또는 에탄-리치 2성분 냉매(142)로 나누어 사용할 수 있는 시스템 또는 분리기들(88, 108, 120, 128) 전체를 통해 일정하다.

COOLING SYSTEM FOR ETHYL SEPARATION

乙烯装置的冷冻系统

一种乙烯装置冷冻系统，采用低压脱甲烷塔(12)和含甲烷-乙烯或甲烷-乙烷混合物的二元冷冻剂(20)。该冷冻组成可沿整个系统保持恒定，或者可采用分离器(88、108、120、128)将冷冻剂分为富甲烷二元冷冻剂(140)和富乙烯或富乙烷二元冷冻剂(142)。

Ethylene plant refrigeration system

Ethylene plant refrigeration system

A refrigeration system for an ethylene plant uses a low pressure demethanizer (12) and a binary refrigerant (20) comprising a mixture of methane and ethylene or methane and ethane. The refrigeration composition may be constant throughout the system or separators (88, 108, 120, 128) may be used to divide the refrigerant into a methane-rich binary refrigerant (140) and an ethylene- or ethane-rich binary refrigerant (142).

Ethylene plant refrigeration system

A refrigeration system for an ethylene plant uses a low pressure demethanizer (12) and a binary refrigerant (20) comprising a mixture of methane and ethylene or methane and ethane. The refrigeration composition may be constant throughout the system or separators (88, 108, 120, 128) may be used to divide the refrigerant into a methane-rich binary refrigerant (140) and an ethylene- or ethane-rich binary refrigerant (142).

COOLING SYSTEM FOR ETHYL SEPARATION

Ethylene plant refrigeration system

A refrigeration system for an ethylene plant uses a low pressure demethanizer (12) and a binary refrigerant (20) comprising a mixture of methane and ethylene or methane and ethane. The refrigeration composition may be constant throughout the system or separators (88, 108, 120, 128) may be used to divide the refrigerant into a methane-rich binary refrigerant (140) and an ethylene- or ethane-rich binary refrigerant (142).

エチレンプラント冷凍システム

(57)【要約】 エチレンプラント用の冷凍システムは、低圧脱メタン装置（12）及びメタン及びエチレン又はメタン及びエタンの混合物でなる二元冷媒（20）を使用する。冷媒組成はシステムを通して一定であり、また、冷媒をメタン−リッチ二元冷媒（140）及びエチレン−又はエタン−リッチ二元冷媒（142）に分割するためにセパレーター（88，108，120，128）が使用される。

乙烯装置的冷冻系统

一种乙烯装置冷冻系统,采用低压脱甲烷塔(12)和含甲烷－乙烯或甲烷－乙烷混合物的二元冷冻剂(20)。该冷冻组成可沿整个系统保持恒定,或者可采用分离器(88、108、120、128)将冷冻剂分为富甲烷二元冷冻剂(140)和富乙烯或富乙烷二元冷冻剂(142)。