УСТРОЙСТВО ДЛЯ УДАЛЕНИЯ ПОВЕРХНОСТНЫХ ВЕЩЕСТВ КАТАЛИЗАТОРА

Изобретение относится к устройству для удаления поверхностного вещества катализатора, присутствующего на поверхности катализатора, с катализатора путем приведения газового потока в контакт с катализатором, расположенным внутри основного корпуса устройства. Данное устройство включает: основной корпус; собирающее устройство для сбора катализатора, находящегося в верхней части основного корпуса; и возвратное устройство для возврата катализатора, соединенное с собирающим устройством. При этом возвратное устройство расположено так, что его нижний конец находится в контакте с данным газовым потоком, и часть катализатора, находящегося в контакте с газовым потоком внутри основного корпуса, собирается собирающим устройством и возвращается внутрь основного корпуса возвратным устройством, длина газового потока в направлении потока газа составляет 55 мм или больше, и средняя скорость потока газа составляет 80 м/с или больше и 500 м/с или меньше в расчете на линейную скорость при 15°C и 1 атм. Предлагаемое ...

УСТАНОВКА И СПОСОБ ДЛЯ ИЗОМЕРИЗАЦИИ ПОТОКА УГЛЕВОДОРОДОВ

Изобретение относится к установке для изомеризации потока углеводородов, богатого углеводородом С4 и/или по меньшей мере одним из углеводородов С5 и С6. Установка содержит: A) емкость, в которой находится текучая среда, содержащая газ, богатый водородом; B) устройство для перемещения текучей среды, принимающее из указанной емкости указанную текучую среду, содержащую газ, богатый водородом; C) по меньшей мере один осушитель, принимающий текучую среду, содержащую газ, богатый водородом, из указанного устройства для перемещения текучей среды, при этом указанный по меньшей мере один осушитель функционирует в первом режиме для осушки текучей среды, содержащей газ, богатый водородом, и во втором режиме в условиях регенерации, проводимой с помощью регенерирующего агента; D) реактор, сообщающийся, по меньшей мере, с одним осушителем для приема текучей среды, содержащей газ, богатый водородом, при этом по меньшей мере один осушитель сообщается с указанной емкостью, по меньшей мере, посредством подачи ...

РЕГЕНЕРАЦИЯ СОДЕРЖАЩИХ МЕТАЛЛ КАТАЛИЗАТОРОВ

Изобретение относится к способу регенерации закоксованного содержащего металл катализатора. Способ включает взаимодействие закоксованного содержащего металл катализатора в зоне регенерации с атмосферой, которая содержит диоксид углерода и монооксид углерода, где отношение парциального давления монооксида углерода к парциальному давлению диоксида углерода в зоне регенерации составляет от 2,3:1 до 100:1, и которая содержит менее 100 част./млн молекулярного кислорода, при температуре, равной от 600°С до 900°С, в течение времени, равного от примерно 0,1 до примерно 60 мин, причем способ дополнительно включает взаимодействие закоксованного содержащего металл катализатора в зоне регенерации с атмосферой, которая содержит водород, при температуре, равной не ниже 400°С, одновременно с указанным взаимодействием с указанной атмосферой, содержащей диоксид углерода и монооксид углерода, или после него. Технический результат заключается в разработке способа регенерации, который является эффективным ...

СИСТЕМА ДЛЯ ОБЕССЕРИВАНИЯ С МЕХАНИЗМОМ ПЕРЕНОСА СОРБЕНТА

Изобретение относится к способу и установке для удаления серы из содержащих углеводороды потоков текучей среды. Способ обессеривания включает стадии: а) контактирование углеводородсодержащего потока текучей среды с твердыми частицами сорбента в реакторе, (b) повышение давления в шлюзовом бункере реактора до давления наполнения, (с) транспортировку наполненных серой частиц сорбента из реактора в находящийся под давлением шлюзовой бункер реактора, (d) сброс давления в наполненном шлюзовом бункере под высоким давлением до давления выпуска, (е) транспортировку наполненных серой частиц сорбента из находящегося при низком давлении наполненного шлюзового бункера реактора в регенератор и (f) контактирование частиц сорбента с содержащим кислород регенерирующим потоком. Установка обессеривания содержит реактор с псевдоожиженным слоем сорбента, приемник реактора для приема наполненных серой частиц сорбента, шлюзовой бункер реактора, регенератор с псевдоожиженным слоем для приема наполненных серой ...

УСТАНОВКА И СПОСОБ ДЛЯ ИЗОМЕРИЗАЦИИ ПОТОКА УГЛЕВОДОРОДОВ

Изобретение относится к установке для вытеснения регенерирующего агента из осушителя. Установка содержит первый осушитель и второй осушитель, приспособленные для приема газообразной текучей среды, содержащей, по меньшей мере, один реагент. При этом первый осушитель выполнен с возможностью функционирования в первом режиме осушки текучей среды, содержащей, по меньшей мере, один реагент, а второй осушитель выполнен с возможностью функционирования во втором режиме, в условиях проведения регенерации с помощью регенерирующего агента. Также содержит реакционную зону, сообщающуюся посредством первого трубопровода с первым осушителем для приема газообразной текучей среды, содержащей, по меньшей мере, один реагент; и систему вытеснения регенерирующего агента в направлении сверху вниз, приспособленную для подачи и регулирования расхода или уменьшения давления части указанной газообразной текучей среды во второй осушитель, удаления вытесненного регенерирующего агента из второго осушителя и технологических ...

ЭКСТРАКЦИОННЫЙ СПОСОБ УДАЛЕНИЯ ПРИМЕСЕЙ ИЗ МАТОЧНОГО РАСТВОРА В СИНТЕЗЕ КАРБОНОВОЙ КИСЛОТЫ

... 1. Способ извлечения металлического катализатора из маточного раствора, который включает следующие стадии: (а) выпаривание указанного маточного раствора, содержащего карбоновую кислоту, указанный металлический катализатор, примеси, воду и растворитель, в зоне первого испарителя с получением потока водяного пара и потока концентрированного маточного раствора; (b) выпаривание указанного потока концентрированного маточного раствора в зоне второго испарителя с образованием обогащенного растворителем потока и потока суперконцентрированного маточного раствора; (с) смешение в зоне смешения раствора вода-растворитель с указанным потоком суперконцентрированного маточного раствора с образованием водной смеси; (d) необязательное выделение органических примесей из указанной водной смеси в зоне разделения фаз твердое вещество/жидкость с образованием очищенной водной смеси; (е) добавление экстракционного растворителя к указанной водной смеси или указанной очищенной водной смеси в зоне экстракции с образованием ...

КАТАЛИЗАТОР ДЛЯ ОКИСЛИТЕЛЬНОЙ ОЧИСТКИ НЕФТИ И НЕФТЯНЫХ ДИСТИЛЛЯТОВ ОТ МЕРКАПТАНОВ, СПОСОБ ЕГО ПОЛУЧЕНИЯ И СПОСОБ ВОССТАНОВЛЕНИЯ АКТИВНОСТИ КАТАЛИЗАТОРА

Изобретение относится к катализатору для окислительной очистки нефти и нефтяных дистиллятов от меркаптанов. Данный катализатор содержит комплекс соли меди с азотсодержащим лигандом, иммобилизованный на носителе. При этом в качестве соли меди он содержит соли разновалентных ионов меди при массовом соотношении разновалентных ионов Cu/Cu, равном 0.2-2.6/1, в качестве азотсодержащего лиганда - моноэтаноламин при массовом соотношении общий металл:моноэтаноламин 0.7-2.9:1, при этом комплекс разновалентных солей меди с моноэтаноламином является твердофазным и имеет следующую формулу (CuA)[(CuA)O]L, где A - анион соляной или уксусной кислоты, L - моноэтаноламин, x=0,041-0,57, y=0,23-0,49, z=0,17-0,45, а массовое соотношение общий металл: носитель составляет 1.0-10.0:100. Предлагаемый катализатор позволяет достичь высокой степени демеркаптанизации углеводородного сырья, благодаря его высокой активности и селективности. Изобретение также относится к способу получения такого катализатора, а также ...

Verfahren zur Regenerierung eines Fluorierungskatalysators

AKTIVIERUNG UND REGENERIERUNG EINES HYDRO-OXYDIERUNGSKATALYSATORS

Demetallization of hydrocarbon conversion catalysts

A demetallization process for catalysts used for chemical conversion of hydrocarbons, the catalysts containing at least vanadium as a metal poison, wherein the poisoned catalyst is contacted in a sulfiding zone with a sulfiding agent and a hydrocarbon having a minimum boiling point of about 300 DEG F, the hydrocarbon being at least partially vaporisable at the temperature in the sulfiding zone.

Molecular sieve catalyst treatment

Regenerated hydro cracking catalyst and method forproducing a hydrocarbon oil

Regenerated hydro cracking catalyst and method forproducing a hydrocarbon oil

Regenerated hydro cracking catalyst and method forproducing a hydrocarbon oil

PROCEDURE FOR THE RECOVERY OF RUTHENIUM CATALYSTS FOR THE NUCLEAR HYDROGENATION OF PHTHALATEN

USE FROM DISPLACED SYNGAS TO THE REGENERATION OF SCR CATALYST

TWO-STAGE PROCEDURE FOR THE REACTIVATION THERMAL OF AGEINGS NITROGEN OXIDE MEMORY CATALYSTS

PROCEDURE FOR THE RECOVERY OF IRON ANTIMONY METALLIC OXIDE CATALYSTS.

PROCEDURES FOR THE RECOVERY OF A USED UP CATALYST OF MEANS OF A WITH OF AN ORGANIC COMPOUND STABILIZED AQUEOUS SOLUTION OF HYDROGEN PEROXIDE.

HYDROFORMYLIERUNGSVERFAHREN

PROCEDURE AND DEVICE FOR STRIPPING

EPOXYSYNTHESE WITH RECOVERY THAT TITANSILIKALITKATALYSATOREN

Process for the conversion of an olefin or a mixture of olefins

Process for catalytically cracking paraffin rich feedstocks comprising high and low concarbon components

Method for producing maleic acid anhydride

EXTRACTION PROCESS FOR REMOVAL OF IMPURITIES FROM MOTHER LIQUOR IN THE SYNTHESIS OF CARBOXYLIC ACID

A method for removing impurities from a mother liquor comprising a carboxylic acid, a metal catalyst, impurities by (a) evaporating the mother liquor comprising a carboxylic acid, a metal catalyst, impurities and a solvent in a first evaporator zone to produce a vapor stream and a concentrated mother liquor stream;(b) evaporating the concentrated mother liquor stream in a second evaporator zone to form a solvent rich stream and a super concentrated mother liquor stream; (c) mixing in a mixing zone a water solvent solution and optionally an extraction solvent with the super concentrated mother liquor stream to form an aqueous mixture;(d) optionally separating organic impurities from the aqueous mixture in a solid-liquid separation zone to form a purified aqueous mixture; and (e) extracting the aqueous mixture or purified aqueous mixture with an extraction solvent in an extraction zone to form an extract stream and the raffinate stream.

DUAL-STAGE METHOD FOR THE REACTIVATION OF THERMALLY AGED NITROGEN OXIDE STORAGE CATALYSTS

Nitrogen oxide storage catalysts are used to remove nitrogen oxides from the lean exhaust gas of so-called lean engines. By being exposed to high tem peratures during vehicle operation, said catalysts are subjected to thermal aging processes affecting nitrogen oxide storage catalysts and precious meta ls containing catalytically active components. The present invention relates to a method by means of which the catalytic activity of a nitrogen oxide st orage catalyst lost as a result of the thermal aging process may be at least partially restored, containing as catalytically active compounds, in additi on to platinum, alkaline compounds of strontium and/or barium on a carrier m aterial containing ceroxide. The dual-stage method is based on the fact that the carrier material may be used to return strontium and/or barium compound s formed during thermal aging to the catalytically active form thereof by ta rgeted treatment with special gas mixtures.

METHOD FOR PRODUCING MALEIC ACID ANHYDRIDE

METHODS OF ACTIVATING CHROMIUM CATALYSTS

New methods for activating chromium catalysts for polymerization processes decrease the amount of time required for activation and increase catalyst activity. Rapid heating to a first temperature is followed by a first hold period before heating to a higher second temperature and maintaining the second temperature for a second hold period. In one aspect, the overall activation process takes less than 10 hours.

METHOD FOR PRETREATING A REFORMONG CATALYST

Supported Group VIII noble metal reforming catalysts are pretreated with an unsaturated aliphatic hydrocarbon at elevated temperatures, thereby lower activity during initial reforming operation and reducing gas production during the initial operation.

TREATMENT OF ARSINE REMOVAL CATALYSTS

Verfahren zum Entfernen von Schwefeldioxyd aus Gasgemischen und Anlage zur Durchführung dieses Verfahrens

PROCEDURE FOR THE RECDISPERSING OF PLATINUM ON A CATALYST.

METHODS FOR IMPROVEMENT OF OUTPUTS OF HIGHER ALCOHOLS FROM SYNTHESIS - GAS BY CHANGING FLOW MODES INSIDE REACTOR

METHOD AND CATALYST FOR DIRECT OXIDATION OF HYDROGEN SULFIDE TO SULFUR, CONTAINED IN GAS

METHOD AND CATALYST FOR DIRECT SULPHUR OXIDATION OF H2S CONTAINED IN GAS

CATALYST AND METHODS FOR PREPARING DIZELNGO FUEL FROM NATURAL GAS, LIQUID POSTS FROM NATURAL GAS OR OTHER GASEOUS RAW MATERIAL

СПОСОБЫ УЛУЧШЕНИЯ ВЫХОДОВ ВЫСШИХ СПИРТОВ ИЗ СИНТЕЗ-ГАЗА ПУТЕМ ИЗМЕНЕНИЯ РЕЖИМОВ ТЕЧЕНИЯ ВНУТРИ РЕАКТОРА

Смешанные спирты получают из синтез-газа. Синтез-газ (100) подают на катализатор (84) в реакторе (80) при выбранных температурах и давлениях. Реакционноспособные продукты, включая смешанные спирты, удаляют из реактора. Нереакционноспособные компоненты (255, 270) удаляют из смешанных спиртов их продуктов реакции. По меньшей мере часть нереакционноспособных компонентов повторно вводят в реактор вместе с синтез-газом. Нереакционноспособными компонентами являются растворитель или сверхкритическая жидкость. Нереакционноспособные компоненты можно повторно вводить в реактор с реакционноспособными компонентами, такими как метанол или CO2.

Real empty can formula SCR catalyst regeneration system of integration

The utility model discloses a real empty can formula SCR catalyst regeneration system of integration, including the real empty can body, real empty can body top is equipped with the automatic cover of tumbling, and rotatory jetting, belt cleaning device fix in cover central authorities, jar external portion is equipped with the heat preservation, goes up the lower extreme and is equipped with gas circulation heating system and is connected with outside heating cycle device adoption insulating tube, real empty can body bottom is equipped with jacking locking device, and the the device top is equipped with changeable ultrasonic wave cluster belt cleaning device, with system steel platform assembly together, promote by the cylinder through between tracks connection, real empty can body bottom intermediate position is equipped with the raffinate and discharges and the evacuation mouth, respectively with filter unit of system and evacuation machine group link, liquid circulating device and charge ...

Regeneration of catalyst/absorber

Apparatus for removing substances from catalyst surface

Provided is an apparatus for efficiently removing substances (catalyst surface substances) exuding from and/or attached to a catalyst surface. An apparatus which is provided with a main body and which removes catalyst surface substances from the surface of a catalyst by bringing the catalyst stored in the main body into contact with airflow, wherein the length of the airflow in the airflow direction is 55 mm or greater, and the average flow velocity of the airflow is 80 ms to 500 ms when calculated as a linear velocity at 15 DEG C and 1 atm.

CATALYTIC PROCESS TO OXIDIZE DIRECTLY OUT OF SULPHUR, At low temperature, the H2S CONTAINED IN WEAK CONCENTRATION IN a GAS AND CATALYST FOR SA IMPLEMENTED

The invention concerns a method wherein the H2S of a gas to be treated is sulphur oxidised by being contacted with an oxidation catalyst consisting of at least one oxysulphide of a metal selected among Ni, Fe, Co, Cu, Cr, Mo and W, associated with a silicon carbide support, by operating at temperatures lower than the dew point of the sulphur formed and more particularly ranging between 30 DEG C and 70 DEG C: The invention is useful for eliminating H2S contained in gases of various origins with recuperation of said H2S essentially in the form of sulphur.

Separator and stripping device for removing particles from a gas flow

On décrit un dispositif de séparation et de stripage d'un mélange de gaz et de particules, comprenant une enveloppe (51) comportant des chambres de séparation (2) et de circulation (3) réparties autour d'un réacteur (1), chaque chambre de séparation (2) comportant en sa partie supérieure, une ouverture (20) d'entrée communiquant avec le réacteur et avec une zone (21), de mise en rotation dans un plan vertical du mélange, chaque chambre de séparation (2) comportant deux parois latérales (24) qui sont aussi les parois des chambres de circulation (3), au moins une des parois (24) de chaque chambre (2) comportant une ouverture (5) latérale de sortie faisant mélange du gaz et des particules dans la chambre de circulation adjacente. Chaque chambre de séparation comporte une ouverture (6) pour une sortie axiale des particules dans une chambre de stripage (30), l'enveloppe (51) comprenant en outre un conduit (14) d'évacuation d'un mélange gaz-particules raccordé à au moins un séparateur secondaire ...

CATALYST REGENERATION OF REFORMING OR ISOMERIZATION OR DEHYDROGENATION OF PARAFFINS IN a VIBRATING HELICOID WHORL

L'invention concerne l'application d'un procédé de régénération de catalyseurs ou d'adsorbants, consistant à faire monter les particules de catalyseur dans une spire hélicoïdale vibrante (12) , lesdites particules étant soumises à un profil de température et mises en contact avec un ou plusieurs fluides sur une partie de leur trajet dans ladite spire, à la régénération de catalyseurs de réformage, d'isomérisation ou de déshydrogénation des paraffines. Le maintien de la spire à une température adéquate peut être obtenu en faisant circuler un gaz à température voulue à l'extérieur et au contact de la spire. Le régénérateur comprend au moins une zone de combustion (14) et au moins une zone d'oxychloration (15) , qui peuvent être confondues. Une zone de préchauffage (13) , une zone de calcination (16) et une zone de refroidissement du catalyseur peuvent également être comprises dans le dispositif.

PROCESS AND DEVICE FOR the PRODUCTION Of AROMATIC INCLUDING a REDUCTIONDU CATALYST

PROCESS AND DEVICE FOR the PRODUCTION Of AROMATIC INCLUDING a REDUCTIONDU CATALYST

PROCESS AND DEVICE FOR the PRODUCTION Of AROMATIC INCLUDING a REDUCTIONDU CATALYST

PROCESS AND DEVICE FOR the PRODUCTION Of AROMATIC INCLUDING a REDUCTIONDU CATALYST

REGENERATION AND STABILIZATION OF DEHYDROGENIC CATALYST

Pressure-tuned solid catalyzed heterogeneous chemical reactions

Improved methods for conducting solid acid-catalyzed, near- or supercritical heterogeneous chemical reactions (e.g., alkylation reactions) are provided which give enhanced product yields and permit longer processing runs. The preferred reactions of the invention are carried out in the presence of a solid macroporous catalyst having a surface area of from about 50-400 m2/g and a pore size of from about 70-150 Å. Product selectivity is enhanced by pressure-tuning of the reaction to promote production and separation of desired reaction products. In continuous processing, the chemical reaction may be interrupted before significant catalyst deactivation, followed by increasing reactor pressure and/or reducing reactor temperature to remove the accumulating coke; when the catalyst is regenerated, the original reaction conditions and reactant introduction may be resumed.

Method for reactivating spent catalyst by contact with one or more aromatic compounds

A method for regenerating a spent porous crystalline catalyst, optionally associated with a metal component such as noble and/or base metal(s), is described. The method comprises contacting the spent catalyst which has become deactivated by accumulation of carbonaceous residue with one or more light aromatic compounds under conditions resulting in reactivation of said catalyst. The light aromatic compounds employed are ones which have the capability of penetrating the catalyst, so as to contact the carbonaceous residue contained therein, undergoing alkylation by alkyl fragments contributed by components of the carbonaceous residue and diffusing from or otherwise escaping the catalyst.

REGENERATION AND ACTIVATION OF CATALYSTS FOR CARBON AND SYNGAS PRODUCTION

A method to regenerate and reactivate catalysts used for a carbon and syngas production reaction including a DRM or CARGEN reaction is developed. Carbon dioxide (CO2) is used as the regeneration and activation media. This method of a single step regeneration and activation using CO2is more effective than the existing conventional two-step process that includes separate reduction and oxidation steps. This method produces pure carbon monoxide (CO) as a byproduct from the regeneration process by utilizing CO2and carbon.

METHODS OF MITIGATING CATALYST DEACTIVATION

A catalyst structure is disclosed. The catalyst structure comprises a catalytic material and a metal material on the catalytic material, where the metal material comprises particle sizes in a range from about 1.5 nanometers to about 3 nanometers. An interface between the metal material and the catalytic material comprises bonds between the metal material and the catalytic material. A method of mitigating catalyst deactivation is also disclosed, as is a method of carbon monoxide disproportionation.

A SELECTIVE CATALYTIC REDUCTION PROCESS AND OFF-LINE REGENERATION OF DEACTIVATED CATALYST OF THE PROCESS

FCC COUNTER-CURRENT REGENERATOR

PURIFYING AND RECOVERY METHOD OF CONTAMINATED CATALYTIC SOLUTION ON CARBONYL REACTION OF METHANOL AND/OR METHYL ACETATE AND/OR DIMETHYL ETHER

PURPOSE: To regenerate a catalyst without the lose of a rhodium complex by removing catalyst contaminants by using liquefied gas consisting of a specific material or gas exceeding the critical point, then separating and recovering a gaseous phase and recycling the gaseous phase. CONSTITUTION: The liquefied gas selected from the specific material, such as carbon dioxide, sulfur hexafluoride or denitrogen monoxide, or the gas exceeding the critical point is used to remove org. impurities as well as acetic acid, acetic anhydride and ethylidene diacetate under pressure of 35 to 450 bar and at 0 to 120 deg.C from the contaminated rhodium complex catalyst soln. The gaseous phase is separated and recovered from the purified liquid and is recycled. The acetic acid, acetic anhydride and ethylidene diacetate are separated from the liquid residue and is recovered and used for the catalyst complex. The org. impurities are taken out as the residue at the time of gaseous phase sepn. The catalyst may ...

СПОСОБ КАРБОНИЛИРОВАНИЯ С ИСПОЛЬЗОВАНИЕМ ПРЕДВАРИТЕЛЬНО ОБРАБОТАННОГО ЦЕОЛИТНОГО КАТАЛИЗАТОРА

FIELD: chemical or physical processes.SUBSTANCE: invention relates to a method of carbonylating dimethyl ether with carbon monoxide gas in the presence of a zeolite carbonylation catalyst, said method comprising successive steps (i) pretreating the catalyst and (ii) carbonylating dimethyl ether with carbon monoxide gas to obtain a reaction product containing methyl acetate; where the catalyst pre-treatment carried out at step (i) comprises steps of (a) bringing the catalyst into contact with a first treatment mixture containing water vapor, (b) adding a catalyst treated in step (a) with a second treatment mixture containing an inert gas and at least one of dimethyl ether and methanol; and (c) stopping treatment with the inert gas component of the second mixture.EFFECT: by pretreatment of the zeolite carbonylation catalyst with water vapor and additionally with a mixture of inert gas and at least one of dimethyl ether and methanol, reduced uncontrolled coking of catalyst, which provides reduced amount of released heat and improved catalytic activity in methods of carbonylation of dimethyl ether with carbon monoxide gas to obtain a reaction product containing methyl acetate.18 cl, 9 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (51) МПК B01J 29/18 B01J 29/50 B01J 29/65 B01J 29/70 C07C 67/37 B01J 38/06 ФЕДЕРАЛЬНАЯ СЛУЖБА B01J 38/04 ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ B01J 29/90 C07C 69/12 (12) (11) (13) 2 734 824 C2 (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК B01J 29/18 (2020.05); B01J 29/50 (2020.05); B01J 29/65 (2020.05); B01J 29/70 (2020.05); C07C 67/37 (2020.05); B01J 38/06 (2020.05); B01J 38/04 (2020.05); B01J 29/90 (2020.05) 2018125662, 25.11.2016 (24) Дата начала отсчета срока действия патента: 25.11.2016 (72) Автор(ы): ХЕЙЗЕЛ Николас Джон (GB), ЛО Дэвид Джон (GB) 23.10.2020 Приоритет(ы): (30) Конвенционный приоритет: 18.12.2015 EP 15201113.6 (43) Дата публикации заявки: 20.01.2020 Бюл. № 2 ( ...

ЭКСТРАКЦИОННЫЙ СПОСОБ ИЗВЛЕЧЕНИЯ ПРИМЕСЕЙ ИЗ МАТОЧНОГО РАСТВОРА В СИНТЕЗЕ КАРБОНОВОЙ КИСЛОТЫ

FIELD: chemistry. SUBSTANCE: invention relates to the removal of the metallic catalyst from stock solution, obtained during the synthesis of carboxylic acids, normally terephthalic acid. Method of removing the metallic catalyst from the stream of stock solution containing carboxyl acid includes the following stages: (a) graduating the stock solution, which contains the carboxyl acid, metallic catalyst, impurities, water and solvent, in the zone of the first evaporator obtaining a stream of water vapour and a stream of concentrated stock solution; (b) evaporating of the specified stream of concentrated stock solution to the zone of the second evaporator forming a stream rich in the solvent and a stream of super-concentrated stock solution; (c) removing organic impurities from super-concentrated stock solution with the help of water-solvent solution in the zone of the separating phase of solid substance/liquid forming a stream of water and a second stream of water; (d) mixing in the zone of mixing water and not necessarily the extraction solvent with the specified water stream and the specified second water stream forming and aqueous solution; (e) adding the extraction solvent to the specified water solution in the extraction zone forming a stream of extract and a stream of raffinate containing the specified metallic catalyst; and (f) separating the specified stream of extract in the separating zone forming a stream of organic impurities with a high boiling point and a stream of the removed extraction solvent. In a different version of the realisation of the method of removing the metallic catalyst from the stream of stock solution containing the carboxylic acid includes the following stages: (a) evaporating of the stock solution containing the carboxylic acid, metallic catalyst, impurities, water and solvent, in the zone of the first evaporator obtaining a stream of water and a stream of concentrated stock solution; (b) evaporating the specified stream of ...

СПОСОБ ПОВЫШЕНИЯ ВЫХОДА УГЛЕВОДОРОДОВ ИЗ УСТАНОВКИ КАТАЛИТИЧЕСКОГО РИФОРМИНГА

Изобретение относится к способу повышения выхода углеводородов C+ в реакторе риформинга, включающему пропускание катализатора через нереакционную зону реактора в первую реакционную зону реактора, причем нереакционная зона содержит первую часть и вторую часть, при этом первая часть и вторая часть разделены дефлектором; подачу потока углеводородного сырья в первую часть нереакционной зоны реактора; подачу продувочного газа во вторую часть нереакционной зоны реактора для создания положительного дифференциального давления между первой частью и второй частью нереакционной зоны; пропускание потока сырья из первой части нереакционной зоны в первую реакционную зону. 2 н. и 8 з.п. ф-лы, 4 ил.

РЕГЕНЕРАТОР УСТАНОВКИ РИФОРМИНГА С ПОДВИЖНЫМ СЛОЕМ КАТАЛИЗАТОРА

Полезная модель относится к нефтехимической и нефтеперерабатывающей промышленности, а именно, к устройствам для проведения окислительной регенерации катализаторов процесса риформинга.Предлагается регенератор с подвижным слоем катализатора, состоящий из корпуса, снабженного патрубками для подачи и отведения катализатора и газовых сред, в котором расположены кольцевые секции зоны выжига кокса, содержащие катализатор, и центральный перфорированный трубопровод, причем вышерасположенная секция выполнена в нижней части воронкообразной и связана с нижерасположенной секцией устройством для транспортировки катализатора, выполненным в виде кольцевого канала, соосного центральному трубопроводу, диаметр которого меньше диаметра секций, центральный трубопровод между секциями перекрыт газонепроницаемой перегородкой, а секции имеют газопроницаемые боковые стенки, вдоль которых выполнен кольцевой зазор между стенкой секции и стенкой корпуса, связанный с патрубками для подачи и отведения газовых потоков ...

СПОСОБ РЕГЕНЕРАЦИИ ЦИНКСОДЕРЖАЩИХ ЦЕОЛИТНЫХ КАТАЛИЗАТОРОВ ПРЕВРАЩЕНИЯ УГЛЕВОДОРОДНЫХ ФРАКЦИЙ С КОНЦОМ КИПЕНИЯ НЕ ВЫШЕ 200°С

Изобретение относится к нефтехимии. Описан способ регенерации содержащих серу цеолитных цинксодержащих катализаторов превращения углеводородных фракций с концом кипения не выше 200°С, включающий удаление серы из катализатора при его контакте с газом, содержащим не менее 40 об.% водорода и хотя бы один из компонентов из группы азот, метан, этан, в условиях образования сероводорода и последующее выжигание кокса при контакте с кислородсодержащим газом. Катализатор может содержать также один и более металлов из группы Fe, Ca, Mg, редкоземельные элементы. Технический результат: способ позволяет уменьшить или предотвратить накопление серы на катализаторе, приводящее к изменению его свойств. 2 з.п.ф-лы, 1 табл.

СПОСОБ РЕГЕНЕРАЦИИ ОТРАБОТАННОГО ПАЛЛАДИЙСОДЕРЖАЩЕГО КАТАЛИЗАТОРА ДЛЯ ГИДРОГЕНИЗАЦИИ РАСТИТЕЛЬНЫХ МАСЕЛ И ЖИРОВ

Изобретение относится к процессам регенерации катализаторов для гидрогенизации растительных масел и жиров. Описан способ регенерации отработанного палладийсодержащего катализатора для гидрогенизации растительных масел и жиров, путем обработки его раствором едкого натра и промывки конденсатом, в котором предварительно осуществляют промывку катализатора паровым конденсатом до отсутствия следов жира при одновременном барботировании водородом, а обработку проводят 10%-ным раствором едкого натра при одновременном продувании водородом, затем промывают паровым конденсатом до полного отсутствия следов щелочи и мыла и сушат в потоке водорода при 145-150°С в течение 8-9 часов. Технический результат - достижение высокой степени очистки и восстановления активности катализатора.

СПОСОБ РЕГЕНЕРАЦИИ НИКЕЛЕВОГО КАТАЛИЗАТОРА

Способ регенерации отработанного никельсодержащего катализатора гидрирования непредельных углеводородов, отличающийся тем, что, с целью восстановления активности, катализатор при температуре 350-400°C и атмосферном давлении выдерживают в токе водородсодержащего газа в течение 0,5-1,0 ч.

СПОСОБ ЗАМЕЩЕНИЯ ГАЗА, АППАРАТ ДЛЯ ЗАМЕЩЕНИЯ ГАЗА И СПОСОБ ПРОВЕДЕНИЯ РЕАКЦИИ ГИДРИРОВАНИЯ НИТРОСОЕДИНЕНИЯ

ЭКСТРАКЦИОННЫЙ СПОСОБ ИЗВЛЕЧЕНИЯ ПРИМЕСЕЙ ИЗ МАТОЧНОГО РАСТВОРА В СИНТЕЗЕ КАРБОНОВОЙ КИСЛОТЫ

... 1. Способ извлечения металлического катализатора из маточного раствора, который включает следующие стадии: (а) выпаривание маточного раствора, содержащего карбоновую кислоту, металлический катализатор, примеси, воду и растворитель, в зоне первого испарителя с получением потока водяного пара и потока концентрированного маточного раствора; (b) выпаривание указанного потока концентрированного маточного раствора в зоне второго испарителя с образованием обогащенного растворителем потока и потока суперконцентрированного маточного раствора; (с) выделение органических примесей раствором вода-растворитель из суперконцентрированного маточного раствора в зоне разделения фаз твердое вещество/жидкость с образованием водного потока и второго водного потока; (d) смешение в зоне смешения воды и необязательно экстракционного растворителя с указанным водным потоком и указанным вторым водным потоком с образованием водной смеси; (е) добавление экстракционного растворителя к указанной водной смеси в зоне экстракции ...

Способ регенерации родийсодержащего катализатора

REAKTIVIERUNG VON DURCH CESIUM AKTIVIERTE SILBERKARALYSATOREN FÜR DIE SELEKTIVE EPOXIDIERUNG VON BUTADIEN IN 3,4-EPOXY-1-BUTEN

ACTIVATION OF PLATINUM GROUP METAL CATALYSTS

METHOD FOR REGENERATING METAL OXIDE/PROMOTER METHANE OXIDATION CATALYST SYSTEM

PROCEDURE FOR THE ACTIVATION OF CHROME CATALYSTS

PROCEDURE FOR REMOVING FROM IMPURITIES FROM THE MOTHER LIQUOR WITH THE SYNTHESIS FROM CARBONIC ACID WITH PRINTING FILTRATION

PROCEDURE FOR THE DISPERSION OR RECDISPERSION OF A VIII OF GROUP OF PRECIOUS METALS OVER A POROUS INORGANIC CARRIER.

PROCEDURE FOR THE RECOVERY OF A MONOFUNCTIONAL MAJORITY-POROUS CATALYST, WHICH HAS A LARGE SELECTIVITY FOR THE DEHYDROZYKLISIERUNG OF PARAFFINS.

METHOD FOR REGENERATING A HYDROGENATION CATALYST

Method for treating gas and apparatus used therefor

A PROCESS FOR REGENERATING A MONOFUNCTIONAL LARGE-PORE ZEOLITE CATALYST HAVING HIGH SELECTIVITY FOR PARAFFIN DEHYDROCYCLIZATION

Activation and regeneration of a hydro-oxidation catalyst

System and method for catalyst regeneration

The various embodiments relate to a system and method for regenerating a direct oxidation catalyst that coverts H2 S to elemental S. One embodiment of the method comprises regenerating a direct oxidation catalyst by contacting the direct oxidation catalyst with steam. 7352214 1 (GHMatters) P95139.AU.1 17> 29 29 29 29 21 FI-23 ...

CATALYTIC REFORMING CATALYST ACTIVATION

PROCESS AND APPARATUS FOR THE PURIFICATION OF CONTAMINATED WATER BY ACTIVATED OZONE

BYPASS CONTROLLED REGENERATION OF NOX ADSORBERS

A method and apparatus for regenerating a lean NOx adsorber is disclosed where the NOx adsorber isused to treat exhaust gases created during the combustion of gaseous fuels in general. A bypass line isused to maintain a target regeneration flow of exhaust gas through the NOx adsorber during regeneration regardless of operating demands on the engine. A closed and open loop control is provided. The closedloop control uses sensors determining properties of the exhaust gas during regeneration and the controllerusing those properties to provide an efficient regeneration cycle. A regeneration map is also provided thatuses creation of in-cylinder regeneration conditions for the exhaust gas in combination of inline regeneration conditions for the exhaust gas.

REGENERATION OF CATALYST/ABSORBER

Hydrocarbon in a carrier of nitrogen or steam is passed over a devitalized supported noble metal/alkali or alkaline earth catalyst/absorber, such as Pt on an alumina monolith coated with potassium carbonate, which has sorbed NOx from engine exhaust to restore and regenerate the devitalized catalyst/absorber for reuse. The hydrocarbon undergoes a shift reaction to produce CO in situ which is the reactant gas for the regeneration.

PROCESS FOR DISPERSING OR REDISPERSING A GROUP VIII NOBLE METAL SPECIES ON A POROUS INORGANIC SUPPORT

F-4386 PROCESS FOR DISPERSING OR REDISPERSING A GROUP VIII NOBLE METAL SPECIES ON A POROUS INORGANIC SUPPORT In a process for dispersing or redispersing relatively large crystallites of Group VIII noble metal species on a porous inorganic support, the supported species is contacted with nitric oxide, either alone or in admixture with a source of halogen such as Cl2, and thereafter any sorbed nitrogen oxide(s) and halogen are removed by purging with an inert gas. The treated metal-loaded catalyst demonstrates substantially increased benzene hydrogenation activity (BHA) compared to the same catalyst prior to treatment.

SYSTEM AND METHOD FOR CATALYST REGENERATION

The various embodiments relate to a system and method for regenerating a direct oxidation catalyst that coverts H2S to elemental S. One embodiment of the method comprises regenerating a direct oxidation catalyst by contacting the direct oxidation catalyst with steam.

METHODS FOR IMPROVING HIGHER ALCOHOL YIELDS FROM SYNGAS BY ALTERING FLOW REGIMES WITHIN A REACTOR

Mixed alcohols are produced from syngas. The syngas (100) is provided to a catalyst (84) in a reactor (80) at selected temperatures and pressures. Reactive products, including mixed alcohols, are removed from the reactor. Non-reactive components (255,270) are removed from the mixed alcohols of their reaction products. At least part of the non- reactive components are reintroduced in the reactor along with syngas. The non-reactive components are a solvent or a super critical fluid. The non-reactive components can be reintroduced into the reactor with reactive components such as methanol or C02.

PROCESS FOR CATALYTICALLY CRACKING PARAFFIN RICH FEEDSTOCKS COMPRISING HIGH AND LOW CONCARBON COMPONENTS

A process for contemporaneously catalytically cracking a paraffin rich feedstock and a heavy feedstock wherein the feedstocks are segregated prior to catalytic cracking in separate reactors with regenerated particulate catalyst solids. The process provides for the separate optimal cracking of paraffinic constituents and heavy naphthenic constituents while maintaining an overall heat balance.

METHOD FOR RENEWED ACTIVATION OF HONEYCOMB-SHAPED CATALYST ELEMENTS FOR DENITRATING FLUE GASES

The invention relates to a method for renewed activation of honeycomb-shaped catalyst elements for denitrating flue gases from fossil fuel-fired boiler plants, specially coal-fired boiler plants in large power stations. According to the invention, each catalyst element is mechanically cleaned using oil and water-free compressed air before mounting. Subsequently, each element is subjected to wet chemical cleaning using fully desalinated water and dried with oil and water-free compressed air. The inventive method enables the activity of used catalyst elements to be increased from less than 50 % to more 83 % of original activity.

SEPARATING AND STRIPPING DEVICE AND ITS USE IN CATALYTIC CRACKING ON FLUIDISED BED

On décrit un dispositif de séparation et de stripage d'un mélange de gaz et de particules, comprenant une enveloppe (51) comportant des chambres de séparation (2) et de circulation (3) réparties autour d'un réacteur (1), chaque chambre de séparation (2) comportant en sa partie supérieure, une ouverture (20) d'entrée communiquant avec le réacteur et avec une zone (21), de mise en rotation dans un plan vertical du mélange, chaque chambre de séparation (2) comportant deux parois latérales (24) qui sont aussi les parois des chambres de circulation (3), au moins une des parois (24) de chaq ue chambre (2) comportant une ouverture (5) latérale de sortie faisant mélange du gaz et de s particules dans la chambre de circulation adjacente. Chaque chambre de séparation comporte u ne ouverture (6) pour une sortie axiale des particules dans une chambre de stripage (30), l'enveloppe (51) comprenant en outre un conduit (14) d'évacuation d'un mélange gaz- particules raccordé à au moins un séparateur secondaire ...

СПОСОБ РАСПРЕДЕЛЕНИЯ ОТРАБОТАННОГО КАТАЛИЗАТОРА (ВАРИАНТЫ) И РАСПРЕДЕЛИТЕЛЬ ОТРАБОТАННОГО КАТАЛИЗАТОРА

Предложен усовершенствованный регенератор отработанного катализатора, который содержит поджелоба, ответвляющиеся от главного желоба, распределительные желоба, которые тянутся наружу с боков главного желоба и поджелобов, и нисходящие трубки, которые тянутся вниз от нижней части главного желоба и поджелобов.

СПОСОБ РАСПРЕДЕЛЕНИЯ ОТРАБОТАННОГО КАТАЛИЗАТОРА (ВАРИАНТЫ) И РАСПРЕДЕЛИТЕЛЬ ОТРАБОТАННОГО КАТАЛИЗАТОРА

Усовершенствованный регенератор отработанного катализатора, который содержит поджелоба, ответвляющиеся от главного желоба, распределительные желоба, которые тянутся наружу с боков главного желоба и поджелобов, и нисходящие трубки, которые тянутся вниз от нижней части главного желоба и поджелобов.

SYSTEM AND METHOD FOR CATALYST REGENERATION

REGENERATED CATALYST HYDRO CRACKING AND METHOD OF MANUFACTURING HYDROCARBON OIL

РЕГЕНЕРИРОВАННЫЙ КАТАЛИЗАТОР ГИДРОКРЕКИНГА И СПОСОБ ИЗГОТОВЛЕНИЯ УГЛЕВОДОРОДНОГО МАСЛА

Регенерированный катализатор гидрокрекинга согласно изобретению представляет собой регенерированный катализатор гидрокрекинга, изготовленный регенерацией отработавшего катализатора гидрокрекинга, который включает носитель катализатора, содержащий цеолит и аморфный металлооксидный композитный материал, имеющий кислотность в твердом состоянии; и по меньшей мере один активный металл, нанесенный на носитель катализатора, выбранный из благородных металлов групп 8-10 Периодической системы элементов, причем данный регенерированный катализатор гидрокрекинга содержит от 0,05 до 1 мас.% углеродистого вещества в расчете на массу атомов углерода во всей массе катализатора.

Activating method for CO-coupled catalyst for preparing oxalate

Method for removing liquid phase benzene retained in catalyst of ethylbenzene alkylation and transalkylation reactor by superheated steam purge and desorption liquid phase method

Irregular honeycomb ceramic carrier catalyst blowing and sweeping device for VOCs purification and use method of irregular honeycomb ceramic carrier catalyst blowing and sweeping device

Catalyst oil removing device

Oxidation catalyst for a lean burn internal combustion engine

An apparatus is disclosed. The apparatus comprises a lean-burn internal combustion engine, engine management means and an exhaust system for treating exhaust gas of the engine. The exhaust system comprises a first oxidation catalyst disposed on a first honeycomb monolith substrate. The first oxidation catalyst comprises platinum supported on a first metal oxide support comprising at least one reducible oxide, and is substantially free of alkali metals and alkaline earth metals. The engine management means is arranged, when in use, intermittently to modulate the lambda composition of the exhaust gas entering the first oxidation catalyst to a rich lambda composition.

CATALYTIC CHEMICAL VAPOR DEPOSITION DEVICE, AND DEPOSITION METHOD AND CATALYST BODY SURFACE TREATMENT METHOD USING SAME

A configuration is provided for a deposition device using the catalytic CVD method which reduces problems associated with extension of the catalyst and is superior in terms of running costs and productivity. The configuration provides a chamber able to maintain reduced interior pressure; a source gas introducing route for introducing source gas into the chamber; a catalyst of tantalum wire having a boride layer on the surface and provided inside the chamber so as to allow the source gas introduced via the source gas introducing route to come into contact with the surface of the catalyst; a gas introducing route for introducing boron-containing gas to the chamber for the reformation of the boride layer on the surface of the catalyst and a power supply unit for applying energy to the catalyst to maintain the catalyst at a predetermined temperature. In this configuration, the introduction of the source gas is stopped, the catalyst is heated while introducing diborane gas from the gas introducing route for reformation of the surface layer, and more boride is formed on the surface of the boride layer of the catalyst 1. A deposition method using a catalytic chemical vapor deposition device comprising:a chamber able to maintain reduced interior pressure; a source gas introduction route for introducing a predetermined source gas into the chamber;a catalyst of tantalum wire having a boride layer on its surface and provided inside the chamber so as to allow the source gas introduced via the source gas introduction route to pass by and come into contact with the surface of the catalyst;a gas introduction route for introducing boron-containing gas to the chamber for the reformation of the boride layer; anda power supply unit for applying energy to the catalyst to maintain the catalyst at a predetermined temperature,where the deposition method step comprises:a boronization step of introducing the boron-containing gas from the gas introduction route, which is used to reintroduce ...

METHOD FOR REMOVING ARSENIC COMPOUND, METHOD FOR RECYCLING NOX REMOVAL CATALYST, AND NOX REMOVAL CATALYST

Provided is a practical method for dry-separating arsenic compounds from a used NOx removal catalyst contaminated with arsenic. The method for removing arsenic compounds comprises heat-treating a NOx removal catalyst contaminated with arsenic compounds at a predetermined temperature in a reducing atmosphere while exposing the catalyst to hydrocarbon compounds (except CH) or oxygen-containing carbon compound. 1. A method for removing an arsenic compound , comprising heat-treating a NOx removal catalyst contaminated with the arsenic compound at a predetermined temperature in a reducing atmosphere while exposing the catalyst to hydrocarbon compounds except CHor oxygen-containing carbon compounds.2. The method for removing an arsenic compound according to claim 1 , wherein the hydrocarbon compounds and the oxygen-containing carbon compounds are gaseous at the predetermined temperature.3. The method for removing an arsenic compound according to claim 1 , wherein the predetermined temperature is more than 300° C. to 600° C. or less.4. The method for removing an arsenic compound according to claim 1 , wherein the NOx removal catalyst contaminated with the arsenic compound in a product form as is or after made into a particle form by grinding treatment is exposed to the hydrocarbon compounds or the oxygen-containing carbon compounds.5. A method for regenerating a NOx removal catalyst claim 1 , comprising removing an arsenic compound by the method for removing an arsenic compound according to .6. The method for regenerating a NOx removal catalyst according to claim 5 , wherein the NOx removal catalyst from which the arsenic compound has been removed is heat-treated at 250° C. or more in an oxygen atmosphere.7. A NOx removal catalyst regenerated by the method according to . The present invention relates to a method for removing arsenic compounds, a method for regenerating a NOx removal catalyst, and a NOx removal catalyst. Particularly, the present invention relates to a ...

Exhaust purification system and catalyst regeneration method

There is provided: a NOx-occlusion-reduction-type catalyst 32 that is provided in an exhaust passage 13 of an internal combustion engine 10, a NOx purge control unit 60 that performs a NOx purge control of setting the exhaust in the rich state and reducing and purifying NOx occluded in the NOx-occlusion-reduction-type catalyst 32; and a NOx purge inhibition processing unit 70 that inhibits NOx purge control when the internal combustion engine 10 becomes a motoring state in which fuel injection is stopped, and inhibiting, when the internal combustion engine 10 has started fuel injection during the inhibition of the NOx purge control, performance of the NOx purge control from the start of the fuel injection until a predetermined period of time has elapsed.

Regeneration of Aromatic Alkylation Catalyst Using Ozone

The present disclosure relates to a method of regenerating an at least partially deactivated catalyst, preferably an aromatic alkylation or transalkylation catalyst, comprising a molecular sieve. The method comprises the step of contacting the deactivated catalyst with an ozone-containing gas, preferably at a temperature of about 50° C. to about 250° C. 1. A process for alkylating an alkylatable aromatic compound comprising the step of contacting the alkylatable aromatic compound and an alkylating agent with a regenerated catalyst comprising a molecular sieve under alkylation conditions to form an alkylated aromatic compound , wherein the regenerated catalyst was regenerated by a method comprising the step of contacting an at least partially deactivated catalyst with an ozone-containing gas under regeneration conditions to produce the regenerated catalyst.2. The process of claim 1 , wherein the regeneration conditions comprise a temperature from about 50° C. to about 250° C.3. (canceled)4. The process of claim 1 , wherein the regeneration conditions comprise a regeneration period from 10 min to about 48 hours.5. The process of claim 1 , wherein the regeneration conditions comprise a regeneration period from 10 hours to about 24 hours.6. The process of claim 1 , wherein the ozone-containing gas has an ozone concentration of from about 0.1 wt. % to about 10 wt. %.7. The process of claim 1 , wherein the ozone-containing gas has an ozone concentration of from about 0.5 to about 5 wt. %.8. The process of claim 1 , wherein the ozone-containing gas has a flow rate of about 0.1 to about 900 volumes of ozone-containing gas to catalyst volume per minute under the regeneration conditions.9. The process of claim 1 , wherein the molecular sieve is selected from the group consisting of a MCM-22 family molecular sieve claim 1 , faujasite claim 1 , mordenite claim 1 , zeolite beta claim 1 , and combinations thereof.10. The process of claim 9 , wherein the MCM-22 family molecular ...

PROCESS FOR PRODUCING BUTADIENE FROM ETHANOL WITH IN SITU REGENERATION OF THE CATALYST OF THE SECOND REACTION STEP

The present invention relates to a process for producing butadiene from ethanol, in two reaction steps, comprising a step a) of converting ethanol into acetaldehyde and a step b) of conversion into butadiene, said step b) simultaneously implementing a reaction step and a regeneration step in (n+n/2) fixed-bed reactors, n being equal to 2 or a multiple thereof, comprising a catalyst, said regeneration step comprising four successive regeneration phases, said step b) also implementing a regeneration loop for the inert gas and at least one regeneration loop for the gas streams comprising oxygen. 1. A process for producing butadiene from ethanol , comprising at least the following steps:a) a step of converting ethanol into acetaldehyde, to produce an ethanol/acetaldehyde effluent, comprising at least one reaction section (A) fed with a stream comprising ethanol and operated in the presence of a catalyst (Ca);b) a butadiene conversion step comprising at least one reaction-regenerative section in which are simultaneously performed a reaction step and a regeneration step in (n+n/2) fixed-bed reactors, n being an integer equal to 2 or a multiple thereof, said (n+n/2) fixed-bed reactors each comprising at least one fixed bed of a catalyst (Cb), said (n+n/2) fixed-bed reactors functioning in parallel and in sequence so that said reaction step starts in each of said reactors with a time shift equal to half of the catalytic cycle time of said catalyst (Cb), said reaction-regenerative section comprising a regeneration loop for inert gas and at least one regeneration loop for a gas stream comprising oxygen, and so that, at each instant:b1) said reaction step is operated in n of said fixed-bed reactors, n being an integer equal to 2 or a multiple thereof, fed at least with a fraction of said ethanol/acetaldehyde effluent obtained from step a), at a temperature of between 300 and 400° C., at a pressure of between 0.1 and 1.0 MPa, for a time equal to the catalytic cycle time of said ...

METHODS FOR CATALYST STRIPPING

A process is disclosed for an improved catalyst stripping process. The stripping vessel is divided into two zones. The first zone is a stripping zone where a substantial portion of the volatile hydrocarbons is removed at higher severity conditions. After the catalyst is stripped, the stripped catalyst moves to the lower cooling zone to be cooled at lower severity conditions. The flow rates, temperatures, pressures and the stripping and cooling zones are designed to ensure there is minimal volatile hydrocarbons on the catalyst by the time it leaves the stripping vessel. This design enables efficient stripping of volatile hydrocarbons at high severity conditions and eliminates these components from being stripped off elsewhere in the unit causing process and equipment issues. 1. A method of stripping and cooling a catalyst comprising:feeding a catalyst to a upper stripping zone operating at upper stripping zone conditions;passing a first gas stream comprising gas to the upper stripping zone, thereby generating a stripped catalyst;passing the stripped catalyst to a lower cooling zone operating at lower cooling zone conditions that are less severe than the upper stripping zone conditions; andpassing a second gas stream comprising gas to a lower cooling zone, thereby generating a stripped and cooled catalyst.2. The method of claim 1 , wherein the upper stripping zone conditions include a temperature from about 200° C. (392° F.) to about 650° C. (1202° F.).3. The method of claim 1 , wherein the pressure for the upper stripping zone is between about 2 psig (13.7 kPa(g)) to about 75 psig (517 kPa(g)) and thermal mass ratio of the first gas stream is between about 0.8 and about 5.4. The method of claim 1 , wherein at least 25 wt % of the residual volatile hydrocarbons on the catalyst is removed in the upper stripping zone.5. The method of claim 1 , wherein the first gas stream flows counter-currently to the catalyst.6. The method of claim 1 , wherein the first gas stream ...

SYSTEMS AND METHODS FOR SEGREGATING INTO DUAL WASTE STREAMS OXIDIZABLE CATALYST MATERIAL FROM INERT SUPPORT MEDIA

A method for disposing of a mixture of oxidizable catalyst material and inert support media. The method comprises introducing inert gas into an enclosure. The enclosure contains a plurality of stacked screens, the stacked screens have openings that decrease in size from a top of the stack to a bottom of the stack. The method also comprises introducing the mixture to an uppermost one of the plurality of stacked screens; moving the plurality of stacked screens to cause the oxidizable catalyst material to separate from and migrate to a location beneath the inert support media; conveying the separated inert support media to a location outside the enclosure for disposal as non-hazardous waste; and conveying the separated oxidizable catalyst material to a location outside the enclosure for at least one of reclamation, or thermal destruction. 1. A method for disposing of a mixture of oxidizable catalyst material and inert support media , the method comprising:introducing inert gas into an enclosure, wherein the enclosure contains a plurality of stacked screens, the stacked screens having openings that decrease in size from a top of the stack to a bottom of the stack;introducing the mixture to an uppermost one of the plurality of stacked screens;moving the plurality of stacked screens to cause the oxidizable catalyst material to separate from and migrate to a location beneath the inert support media;conveying the separated inert support media to a location outside the enclosure for disposal as non-hazardous waste; andconveying the separated oxidizable catalyst material to a location outside the enclosure for at least one of reclamation or thermal destruction.2. The method of claim 1 , wherein the thermal destruction includes disposal via incineration.3. The method of claim 1 , wherein the inert gas is nitrogen.4. The method of claim 1 , wherein introducing the mixture includes conveying the mixture in a closed conveyor containing the inert gas.5. The method of claim 1 , ...

CATALYST STRUCTURES FOR MITIGATING CATALYST DEACTIVATION AND RELATED METHODS

A catalyst structure is disclosed. The catalyst structure comprises a catalytic material and a metal material on the catalytic material, where the metal material comprises particle sizes in a range from about 1.5 nanometers to about 3 nanometers. An interface between the metal material and the catalytic material comprises bonds between the metal material and the catalytic material. A method of mitigating catalyst deactivation is also disclosed, as is a method of carbon monoxide disproportionation. 1. A catalyst structure , comprising:a catalytic material; anda metal material on the catalytic material, an interface between the metal material and the catalytic material comprising bonds between the metal material and the catalytic material, and the metal material comprising particle sizes in a range from about 1.5 nanometers to about 3 nanometers.2. The catalyst structure of claim 1 , wherein the catalytic material comprises molybdenum carbide (MoC) claim 1 , titanium carbide (TiC) claim 1 , vanadium carbide (VC) claim 1 , zirconium carbide (ZrC) claim 1 , hafnium carbide (HfC) claim 1 , niobium carbide (NbC claim 1 , NbC) claim 1 , tantalum carbide (TaC(where x=about 0.4 to about 1)) claim 1 , an oxide of molybdenum claim 1 , titanium claim 1 , vanadium claim 1 , zirconium claim 1 , hafnium claim 1 , niobium claim 1 , or tantalum claim 1 , a mixed metal oxide claim 1 , or a combination thereof.3. The catalyst structure of claim 1 , wherein the metal material comprises platinum (Pt) claim 1 , iron (Fe) claim 1 , cobalt (Co) claim 1 , nickel (Ni) claim 1 , molybdenum (Mo) claim 1 , copper (Cu) claim 1 , potassium (K) claim 1 , palladium (Pd) claim 1 , rhodium (Rh) claim 1 , ruthenium (Ru) claim 1 , iridium (Ir) claim 1 , or combinations thereof.4. The catalyst structure of claim 1 , wherein particle sizes of the metal material comprise particle sizes in a range from about 2 nanometers to about 2.7 nanometers.5. The catalyst structure of claim 1 , wherein the metal ...

CATALYST FOR PRODUCING OLEFIN, AND CONTINUOUS REACTION-REGENERATION OLEFIN PRODUCING METHOD USING THE CATALYST

Disclosed is a catalyst for producing the olefin. The catalyst includes a support including alumina and a sub-support component, and a metal oxide impregnated on the support. The metal oxide includes anyone selected from an oxide of chromium, vanadium, manganese, iron, cobalt, molybdenum, copper, zinc, cerium and nickel; and the sub-support component includes anyone selected from zirconium, zinc and platinum. 1. A catalyst for producing olefin comprising:a support comprising alumina and a sub-support component; anda metal oxide impregnated on the support,wherein the metal oxide comprises anyone selected from an oxide of chromium, vanadium, manganese, iron, cobalt, molybdenum, copper, zinc, cerium and nickel, andwherein the sub-support component comprises anyone selected from zirconium, zinc and platinum.2. The catalyst of claim 1 , wherein the sub-support component comprises zirconium which is 3 to 15 wt % of the support claim 1 , and wherein the metal oxide comprises chromium oxide which is 10 to 30 wt % of the catalyst.3. The catalyst of claim 2 , wherein the sub-support component further comprises platinum claim 2 , which is 0.05 to 0.5 wt % of the support.4. The catalyst of claim 3 , wherein the sub-support component further comprises zinc claim 3 , which is 5 to 15 wt % of the support.5. A continuous reaction-regeneration olefin producing method comprising:pretreating the catalyst by providing the reduction gas to the catalyst for producing the olefin from the hydrocarbon (stage 1);producing the olefin from the hydrocarbon by using the catalyst pretreated at stage 1 (stage 2);separating the olefin and the catalyst used at stage 2, and regenerating the separated catalyst (stage 3);recycling the catalyst regenerated at stage 3 to the process of stage 1 (stage 4); anditerating stage 1 to stage 4,wherein the catalyst comprises a support including alumina and a sub-support component, and a metal oxide impregnated on the support;wherein the metal oxide comprises ...

Selective catalytic reduction process and off-line regeneration of deactivated catalyst of the process

Presented is a process for the off-line regeneration of a deactivated nitrogen oxide decomposition catalyst of a selective catalytic reduction system that is a component of a flue gas treating system. The selective catalytic reduction system is isolated to allow for removal and replacement of deactivated SCR catalyst. The removed SCR catalyst may be regenerated off-line from the flue gas treating system. The off-line regenerated SCR catalyst can be used as a replacement SCR catalyst.

Methods of Treatment and Use of Spent Equilibrium Catalyst

Disclosed is a method of treating spent equilibrium catalyst (ECAT) for reuse, in which a quantity of spent ECAT comprising hydrophilic particles with differing levels of metal contamination is disposed into a reactor and treated to form carbon nanotubes on the particles having metal contamination, thereby rendering at least a portion of the spent ECAT particles hydrophobic; the hydrophobic particles can then be separated from the hydrophilic particles. Also disclosed is a method of remediating an oil spill using a carbon nanotube sponge material. 1. A method of treating spent equilibrium catalyst (ECAT) for reuse , the method comprising the steps of: low metal particles having a low level of metal contamination thereon below a predetermined metal content separation point; and', 'high metal particles having a high level of metal contamination thereon above the predetermined metal content separation point; and', 'wherein the low metal particles and high metal particles are hydrophilic;, 'disposing a quantity of spent ECAT into a reactor, the spent ECAT comprisingtreating the spent ECAT in the reactor with a carbon-containing gas or fluid under carbon nanotube-forming conditions, wherein the carbon-containing gas or fluid is converted to a quantity of carbon nanotubes on the high metal particles of the spent ECAT such that the high metal particles are rendered hydrophobic while the low metal particles remain hydrophilic;combining the treated spent ECAT with a biphasic mixture comprising a hydrophobic component and a hydrophilic component, wherein the high metal particles primarily reside in the hydrophobic component and the low metal particles primarily reside in the hydrophilic component; andisolating the low metal particles from the hydrophilic component to form low metal spent ECAT.2. The method of claim 1 , comprising reusing the low metal spent ECAT in a fluidized catalytic cracking (FCC) unit.3. The method of claim 1 , wherein the carbon nanotubes comprise multi ...

Method of Improving Metal-impregnated Catalyst Performance

A method of reducing the amount of carbon monoxide present during the metal reduction step of start-up, thus, maintaining metal dispersion and improving the metal reduction and catalyst yields. Carbon monoxide formation is minimized during the start-up procedure and during the initial catalyst dryout phase in a hydrogen-containing atmosphere, gas is purged from the reactor system, either continuously at constant pressure or by a series of pressure/depressure cycles, to remove carbon monoxide. The purging is conducted at temperatures of about 30-500° C. and pressures of about −90-5,000 kPa(g) (−0.9-50 bar(g)). In this temperature range, carbon monoxide absorbed to the surface of the metal will desorb into the hydrogen-containing atmosphere and can be removed from the system along with carbon monoxide present in the atmosphere through the purging. 1. A method of desorbing carbon monoxide from metal-impregnated catalysts , the method comprising purging gas from the catalyst reactor system at about 30-500° C. and about −90 kPa(g)-5 ,000 kPa(g) while the catalyst is in the presence of hydrogen by performing at least two pressure/depressure cycles , wherein said metal comprises platinum in an amount less than about 0.05 wt % , and wherein said purging reduces the carbon monoxide concentration in the catalyst reactor system to about 1 ppm or less.2. (canceled)3. The method of wherein said hydrogen comprises about 0.3 ppm or less of carbon monoxide.4. The method of wherein said pressure/depressure cycle comprises pressurizing the catalyst reactor system to at least about 500 kPa(g) with a gas containing about 0.3 ppm or less of carbon monoxide and subsequently depressurizing the catalyst reactor system to about 200 kPa(g) or less.5. The method of wherein said gas comprises nitrogen or hydrogen.6. The method of wherein said pressure/depressure cycle is repeated four times.7. The method of wherein the catalyst reactor system is depressured to about 200 kPa(g) or less prior to ...

DESULFURIZATION OF NOX STORAGE CATALYSTS

The present invention relates to the use of a particular method for the targeted desulfurization of particular nitric oxide storage catalysts (NOx storage catalysts). In particular, this invention is directed to the use of an adapted method on specifically composed storage catalysts. 1. Use of a method for the targeted desulfurization of NOx storage catalysts which are used for exhaust gas purification of predominantly lean-burning combustion engines , wherein the NOx storage catalysts comprise cerium and alkaline earth metal-containing nitric oxide storage catalysts in a weight ratio of cerium-containing nitric oxide storage catalysts to alkaline earth metal-containing ones of 10:1 to 20:1 , wherein these are desulfurized at ≧500° C. on average in an A/F range of 0.98≦λ≦1.0.2. The use according to claim 1 , wherein the NOx storage catalysts comprise cerium-containing nitric oxide storage catalysts selected from the group comprised of cerium oxide claim 1 , a cerium-zirconium mixed oxide claim 1 , a cerium oxide doped with rare earths claim 1 , and combinations thereof.3. The use according to claim 1 , wherein the NOx storage catalysts comprise alkaline earth-containing nitric oxide storage materials claim 1 , wherein the alkaline earth metals in these materials are selected from the group comprised of barium claim 1 , calcium claim 1 , strontium claim 1 , and magnesium.4. The use according to claim 1 , wherein the temperature during the desulfurization is 500° C. to 800° C.5. The use according to claim 1 , wherein claim 1 , the adjusted air ratio during desulfurization is modulated using a frequency between 0.5 and 20 Hz.6. The use according to wherein claim 5 , during the desulfurization the modulation is performed at an amplitude within ±0.05 of the adjusted air ratio (λ).7. The use according to claim 1 , wherein claim 1 , the exhaust gas for the desulfurization of the nitric oxide storage catalysts is not additionally enriched by means of the engine in order to ...

METHODS, SYSTEMS, AND APPARATUSES TO IMPROVE PROCESSES OF INCREASING FISCHER-TROPSCH CATALYST ACTIVITY

One or more embodiments of the present disclosure include methods of improving the activity of an at least partially non-active Fischer-Tropsch (“FT”) catalyst in a tubular FT reactor, which includes heating a heat transfer fluid (“HTF”) to a vapor state, using the heated HTF in the vapor state to achieve and maintain the at least partially non-active FT catalyst at a predetermined stage temperature; and exposing the at least partially non-active FT catalyst to at least one stage FT catalyst activity-related gas for a stage duration of time to increase the activity of the FT catalyst to a desired level. Other methods, systems and apparatuses are also disclosed. 1. A method of increasing the activity level of a Fischer-Tropsch (“FT”) catalyst in situ , comprising:a. heating a heat transfer fluid (“HTF”) to a vapor state at a predetermined HTF temperature using an HTF vaporizer to create an HTF vapor;b. providing a stream of the HTF vapor to an HTF input of a shell side of an FT reactor, having the shell side and a tube side, to heat the FT reactor to a predetermined reactor temperature, the FT reactor containing an at least partially non-active FT catalyst in a plurality of FT catalyst-filled tubes, the vaporous HTF cooling and at least partially condensing to a liquid HTF;c. passing the liquid HTF through an HTF output of the shell side of the FT reactor;d. returning the liquid HTF to the HTF vaporizer for re-heating into the vaporous HTF; ande. while continuing to provide the stream of HTF vapor into the FT reactor on the shell side sufficient to maintain the predetermined reactor temperature, providing at least one FT catalyst activity-related gas into the FT reactor on the tube side to contact the at least partially non-active FT catalyst.2. The method of claim 1 , wherein the step of providing the at least one FT catalyst activity-related gas into the FT reactor on the tube side to contact the at least partially non-active FT catalyst continues until the ...

METHOD FOR ESTIMATING SULFUR COMPONENT CONCENTRATION IN GASOLINE

A method is provided that allows the sulfur component concentration in gasoline to be estimated to high precision. The measuring method of the disclosure is a method of measuring the concentration of sulfur components in gasoline that contains sulfur components and aromatic components. The measuring method of the disclosure comprises: (A1) removing a portion of the gasoline by gasification to lower the proportion of the aromatic component concentration with respect to the sulfur component concentration in the gasoline, (A2) measuring values related to the refractive index of the gasoline, and (A3) measuring the sulfur component concentration in the gasoline based on the values related to the refractive index. 1. A method for estimating the concentration of sulfur components in gasoline that contains sulfur components and aromatic components , wherein the method comprises:(A1) removing a portion of the gasoline by gasification to lower the proportion of the aromatic component concentration with respect to the sulfur component concentration in the gasoline,(A2) measuring values related to the refractive index of the gasoline, and(A3) estimating the sulfur component concentration in the gasoline based on the values related to the refractive index.3. The method according to claim 1 , wherein in step (A1) claim 1 , the gasoline is heated to gasify a portion of the gasoline.4. The method according to claim 2 , wherein in step (A1) claim 2 , the sensor unit interior is irradiated with a laser from the incoming light fiber side to heat the gasoline and gasify a portion of the gasoline.5. The method according to claim 1 , wherein the sulfur components comprise dimethylthiophene claim 1 , dibenzothiophene claim 1 , benzothiophene or any combination of the same.6. The method according claim 1 , wherein the aromatic components comprise toluene.7. A method for recovering an exhaust gas purifying catalyst that purifies exhaust gas emitted by an internal combustion engine in which ...

Regeneration method for benzene alkylation solid acid catalyst

A regeneration method for a benzene alkylation solid acid catalyst, comprising: purging the solid acid catalyst in a reactor with a gas; continuously injecting n-hexane at a feed port of the reactor and heating the n-hexane to wash the solid acid catalyst, and discharging the n-hexane entraining benzene alkylation reaction residues from a discharge port of the reactor; and stopping injecting n-hexane, cleaning off a liquid in the reactor by purging with the gas, and cooling the reactor. In the regeneration method of the present disclosure, the regeneration liquid used is n-hexane, which can increase the solubility of the residues in channels and enhance the regeneration effect. Meanwhile, permanent damage to the channel structure of the catalyst caused by carbon burning regeneration can be avoided, thereby prolonging the lifetime of the catalyst.

PROCESS FOR PRODUCING CUMENE

In a process for producing cumene, benzene and a C3 alkylating agent comprising isopropanol are supplied to an alkylation zone comprising a molecular sieve alkylation catalyst under alkylation conditions such that the isopropanol reacts with the benzene to produce a reaction product comprising cumene. Subsequently, the supply of benzene and C3 alkylating agent to the alkylation zone is ceased and a gaseous stripping agent is supplied to the molecular sieve alkylation catalyst under conditions effective to remove nitrogenous impurities deposited on the catalyst during the preceding alkylation reaction. The supply of benzene and C3 alkylating agent to the alkylation zone is then reinitiated. 1. A process for producing cumene comprising:{'sub': '3', '(a) supplying benzene and a Calkylating agent comprising isopropanol to an alkylation zone comprising a molecular sieve alkylation catalyst under alkylation conditions such that the isopropanol reacts with the benzene to produce a reaction product comprising cumene;'}{'sub': '3', '(b) ceasing the supply of benzene and Calkylating agent to the alkylation zone;'}(c) supplying a gaseous stripping agent to the molecular sieve alkylation catalyst under conditions to remove nitrogenous impurities deposited on the catalyst during (a); and{'sub': '3', '(d) reinitiating the supply of benzene and Calkylating agent to the alkylation zone.'}2. The process of claim 1 , wherein said gaseous stripping agent comprises at least one of N claim 1 , H claim 1 , alkane claim 1 , He claim 1 , Ar claim 1 , CO claim 1 , and CO.3. The process of claim 1 , wherein said conditions in (c) comprise a temperature in the range from about 100 to about 600 ° C. and a pressure in the range from about 120 kPa-a to about 2170 kPa-a.4. The process of claim 1 , wherein the supplying (c) is continued until the alkylation activity of the molecular sieve alkylation catalyst is increased to at least 60% of the alkylation activity of the fresh catalyst.5. The ...

ENHANCED EXTRACTION OF IMPURITIES FROM MIXTURE COMPRISING NITRILES

Disclosed herein are methods for recovering phosphorus-containing ligand from mixtures comprising organic mononitriles and organic dinitriles, using liquid-liquid extraction. Also disclosed are treatments to enhance extractability of the phosphorus-containing ligand. 1. A process for recovering a catalyst and adiponitrile (ADN) from a mixture comprising adiponitrile , 3-pentenenitrile (3PN) , a Lewis acid and a catalyst , said process comprising the steps of:(a) providing a countercurrent multistage extraction zone comprising at least three mixer-settlers connected in series;(b) introducing said mixture comprising ADN, 3PN, Lewis acid and a catalyst to a first terminal mixer-settler in the series;(c) introducing an extraction solvent into the second terminal mixer-settler in the series;(d) forming a light phase comprising extraction solvent and a heavy phase comprising ADN and 3PN in the settling sections of each of the mixer-settlers;(e) flowing the heavy phase progressively from the first terminal mixer-settler through each of the mixer-settlers and into the second terminal mixer-settler;(f) flowing the light phase progressively from the second terminal mixer-settler through each of the mixer-settlers and into the first terminal mixer-settler;(g) withdrawing the light phase comprising extraction solvent and extracted catalyst from the first terminal mixer-settler;(h) withdrawing the heavy phase comprising ADN and 3PN from the second terminal mixer-settler;(i) distilling the withdrawn light phase from step (g) to separate extraction solvent from catalyst; and(j) distilling the withdrawn heavy phase from step (h) to separate ADN from 3PN,wherein the catalyst comprises zero valent nickel and a phosphorus-containing ligand,wherein a polyamine is added to the mixing section of the first terminal mixer-settler to form a precipitate comprising a complex of the Lewis acid with the polyamine,wherein the precipitate is dispersed in the heavy phase in the settling section of ...

CATALYST REGENERATOR, FLUID CATALYTIC CRACKING REACTION SYSTEM AND CATALYST REGENERATION METHOD

A catalyst regenerator includes: a container including a catalyst inlet through which a coked catalyst is introduced and a catalyst outlet to which a regenerated catalyst is discharged; a first supply unit formed below the catalyst inlet and supplying a syngas containing solid carbon to the coked catalyst introduced into the container; and a second supply unit formed below the first supply unit and supplying high-temperature air into the container. 1. A catalyst regenerator comprising:a container including a catalyst inlet through which a coked catalyst is introduced and a catalyst outlet to which a regenerated catalyst is discharged;a first supply unit formed below the catalyst inlet and supplying a syngas containing solid carbon to the coked catalyst introduced into the container; anda second supply unit formed below the first supply unit and supplying high-temperature air into the container.2. The catalyst regenerator of claim 1 , wherein:the catalyst inlet is disposed at an upper portion of the container, andthe catalyst outlet is disposed at a lower portion of the container.3. The catalyst regenerator of claim 2 , wherein:the first supply unit includes a first nozzle assembly supplying the syngas, andthe second supply unit includes a second nozzle assembly supplying the high-temperature air.4. The catalyst regenerator of claim 3 , wherein:the second nozzle assembly is spaced apart from the first nozzle assembly by a first distance and is spaced apart from the catalyst outlet by a second distance, andthe first distance is set to a product of a flow velocity of the coked catalyst and a time at which the coked catalyst and the high-temperature syngas are mixed with each other.5. The catalyst regenerator of claim 4 , wherein:the container sets a coking volume depending on the first distance, andthe coking volume is set to a size at which the coked catalyst is additionally coked by the syngas.6. The catalyst regenerator of claim 4 , wherein:the second distance is ...

APPARATUS AND METHOD FOR DESULFATION OF A CATALYST USED IN A LEAN BURN METHANE SOURCE FUELED COMBUSTION SYSTEM

An apparatus for reactivating a sulfur poisoned oxidation catalyst operating in the exhaust of a lean burn, methane source (as in natural gas) fueled combustion device as in an engine. The reactivation includes desulfation of the poisoned catalyst through the use of a CO supplementation apparatus in communication with the control unit that is adapted to supplement the CO content in the exhaust reaching the catalyst, while avoiding an overall rich exhaust atmosphere at the catalyst. An example includes the added supply of hydrocarbons to one or more, preferably less than all, of the lean burn engine's combustion chambers such as by an ECU controlled extra supply of NG (e.g., CNG) to some of the combustion chambers. Also featured is a method for desulfation of an oxidation catalyst of a lean burn CNG engine by supplying excess CO to the exhaust reaching the catalyst while retaining an overall lean state, and a method of assembling an apparatus for reactivating a sulfur deactivated lean burn NO engine catalyst by assembling a CO supplementation apparatus with a control unit. 1. An apparatus for catalytic treatment of exhaust from a lean burn , methane sourced fuel combustion device , comprising:an exhaust line adapted for receipt of exhaust from the combustion device;a catalyst positioned for contact with exhaust traveling in the exhaust line;a control unit;a CO supplementation apparatus in communication with the control unit and adapted to supplement the CO content in the exhaust reaching the catalyst, while avoiding an overall rich exhaust atmosphere at the catalyst, so as to desulfate the catalyst.2. The apparatus of wherein the catalyst is a lid-based catalyst.3. The apparatus of wherein the catalyst comprises Pd and at least a second metal.4. The apparatus of wherein the second metal is Pt.5. The apparatus of wherein the CO supplementation apparatus supplements the CO exhaust content by adding fuel to the CO supplementation apparatus while retaining an overall ...

REGENERATION OF OXIDATIVE DEHYDROGENATION CATALYST IN A REACTOR

Disclosed herein is a process for the regeneration of oxidative dehydrogenation (OXO-D) catalyst in an alternate or separate regeneration reactor by employing controlled steam: air and time/pressure/temperature conditions. The process avoids destruction of the catalyst, and wear/tear on an OXO-D reactor. The regenerated catalyst is an iron based oxide catalyst which can be zinc or zinc-free. The iron based oxide catalyst is regenerated in the regeneration reactor by feeding an air/steam stream over a set amount of time, preferably about 6 days to yield a regenerated OXO-D catalyst. The regenerated catalyst is activated and re-utilized to produce butadienes. 1. A process for regenerating an iron-based spent oxidative dehydrogenation catalyst in a fixed bed reactor , the process comprising:{'sub': '2', 'passing a stream containing steam and air in a controlled fashion, together with an oxygen-containing gaseous mixture having Oto HC ratio is in the range of 0.2-1, and the steam to HC ratio is in the range of 10-15 over a spent iron-based oxidative dehydrogenation catalyst containing carbonaceous compounds in the fixed bed reactor; wherein the steam to air ratio is less than 20 moles; and,'}heating the carbonaceous compounds deposited on the spent iron-based oxidative dehydrogenation catalyst at a pressure of 0-150 psig and a temperature less than 705° C., (1300° F.), wherein the temperature is maintained substantially constant for a period less than 144 hours (6 days) in the fixed bed reactor, and thereby regenerating the spent iron-based oxidative dehydrogenation catalyst in the fixed bed reactor.2. The process of wherein the Oto HC ratio is 0.55 and the steam to HC ratio is 12.3. The process of wherein the steam to air ratio is less than 10 moles.4. The process of wherein the temperature in the range of 340-650° C.5. The process of wherein the reaction temperature is raised by adjusting steam rate at no more than about 10 MT/hour.6. The process of claim 1 , wherein ...

METHODS AND APPARATUS FOR REGENERATION OF CATALYST BEDS IN REACTORS

The present invention relates to catalyst beds and, more particularly, regeneration of the catalyst by contacting the catalyst bed with nitrogen-rich gas, such as, air. The catalyst beds are typically positioned within a reactor vessel, such as, fixed-bed catalyst reactors. The catalyst bed serves as a solid support upon which chemical react. As a result of operation of the reactors, over a period of time, solid matter deposits on at least a portion of the catalyst bed causing reduced activity of the catalyst. Thus, the catalyst regeneration systems and methods of the invention provide the ability to provide continued effectiveness of the catalyst. 1. A method of regenerating a catalyst bed having catalyst with solid matter deposited thereon , comprising:heating a nitrogen-rich gas to an elevated temperature to produce a heated nitrogen-rich gas;passing the heated nitrogen-rich gas through or over the catalyst bed; andcontacting the catalyst with the heated nitrogen-rich gas.2. The method of claim 1 , wherein the nitrogen-rich gas is air.3. The method of claim 1 , wherein the catalyst bed is positioned within a fixed-bed catalyst reactor vessel.4. The method of claim 3 , wherein regenerating the catalyst is conducted without removing the catalyst bed from the reactor vessel.5. The method of claim 3 , wherein the catalyst bed is removed from the reactor vessel for regenerating the catalyst.6. The method of claim 1 , wherein the solid matter deposited on the catalyst is selected from the group consisting of carbon particles claim 1 , coke deposits claim 1 , carbon-containing particles claim 1 , and mixtures thereof.7. A method of regenerating catalyst claim 1 , in a catalyst bed claim 1 , having solid matter deposited thereon and positioned in a reactor claim 1 , comprising:introducing a heated nitrogen-rich gas at an inlet of the reactor;allowing the heated nitrogen-rich gas to flow through an interior of the reactor;contacting the catalyst in the catalyst bed of the ...

Exhaust Treatment Regeneration Control System

A system and method for controlling the regeneration of an exhaust gas particulate filter. When regeneration is initiated, an outlet temperature of an exhaust gas oxidation catalyst and an outlet temperature of the exhaust gas particulate filter are detected. As part of a closed loop non-linear temperature targeting regime, the maximum of the outlet temperature of the exhaust gas oxidation catalyst and the outlet temperature of the exhaust gas particulate filter is set as a reference temperature. A regeneration temperature target is initialized and indexed based on a profile time and the reference temperature. As part of a closed loop fuel control regime at least one hydrocarbon dosing value is determined based on an exhaust mass flow, the reference temperature, and the regeneration temperature target. 1. An exhaust treatment system comprising:an exhaust gas particulate filter;an exhaust gas oxidation catalyst in fluid communication with said exhaust gas particulate filter;a hydrocarbon injector supplying a dose of hydrocarbon fuel to said exhaust gas particulate filter;a regeneration management module controlling said hydrocarbon injector;said regeneration management module receiving signals indicative of an outlet temperature of said exhaust gas oxidation catalyst and an outlet temperature of said exhaust gas particulate filter;said regeneration management module setting a reference temperature as one of said outlet temperature of said exhaust gas oxidation catalyst and said outlet temperature of said exhaust gas particulate filter;said regeneration management module initializing a regeneration temperature target and indexing said regeneration temperature target based on a profile time and said reference temperature; andsaid regeneration management module determining said dose of hydrocarbon fuel based on said regeneration temperature target.2. The system of wherein said regeneration management module determines said dose of hydrocarbon fuel by calculating a ...

Process for the conversion of oxygenates to olefins

The present invention relates to a process for converting oxygenates to olefins, comprising (1) providing a gas stream comprising one or more ethers; (2) contacting the gas stream provided in (1) with a catalyst, the catalyst comprising a support substrate and a layer applied to the substrate, the layer comprising one or more zeolites of the MFI, MEL and/or MWW structure type.

PROCESS FOR OPERATING A HIGHLY PRODUCTIVE TUBULAR REACTOR

The present technology is directed to processes for conversion of synthesis gas in a tubular reactor to produce a synthetic product that utilizes high activity carbon monoxide hydrogenation catalysts and a heat transfer structure that surprisingly provides for higher per pass conversion with high selectivity for the desired synthetic product without thermal runaway. 1. A process for the conversion of synthesis gas , the process comprising contacting in a tubular reactor a gaseous stream comprising synthesis gas with a carbon monoxide hydrogenation catalyst to produce a synthetic product; a reactor inlet in fluid communication with one or more reactor tubes wherein each reactor tube comprises a tube inlet, a tube outlet located downstream of the tube inlet, an inner tube wall comprising a surface area, an outer tube wall, a heat transfer structure within the reactor tube, and a volume of the carbon monoxide hydrogenation catalyst within the reactor tube;', 'a reactor outlet located downstream of the reactor inlet in fluid communication with the one or more reactor tubes; and', 'a cooling medium in contact with the one or more reactor tubes;, 'wherein the tubular reactor comprises'} the diameter of the inner tube wall is from 20 mm to 80 mm;', {'sub': '2', 'sup': '−1', 'the carbon monoxide hydrogenation catalyst exhibits a conversion rate of at least 30 millimoles CO per mL of catalyst per hour when tested by reacting a stream comprising 30 vol. % inert gas and a ratio of H/CO of 1.84 at a temperature of 205° C. and a pressure of 348 psig with a catalyst gas hourly space velocity of 20,000 hrusing a particulate form of the carbon monoxide hydrogenation catalyst with a weight average diameter of less than 65 μm;'}, 'the heat transfer structure comprises a network of heat conducting surfaces in conductive thermal contact with a portion of the carbon monoxide hydrogenation catalyst and wherein the heat transfer structure is in at least partial conductive thermal contact ...

METHOD FOR REMOVING ARSENIC COMPOUND, METHOD FOR REGENERATING NOX REMOVAL CATALYST, AND NOX REMOVAL CATALYST

Provided is a practical method for dry-separating arsenic compounds from a used NOx removal catalyst contaminated with arsenic. The method for removing arsenic compounds comprises heat-treating a NOx removal catalyst contaminated with arsenic compounds at a predetermined temperature in a reducing atmosphere while exposing the catalyst to hydrocarbon compounds (except CH) or oxygen-containing carbon compound. 1. An apparatus for removing an arsenic compound , comprising a treatment unit which conducts heat-treatment of a NOx removal catalyst contaminated with the arsenic compound at a predetermined temperature in a reducing atmosphere while exposing the catalyst to hydrocarbon compounds except CHor oxygen-containing carbon compounds.2. The apparatus for removing an arsenic compound according to claim 1 , wherein the hydrocarbon compounds and the oxygen-containing carbon compounds are gaseous at the predetermined temperature.3. The apparatus for removing an arsenic compound according to claim 1 , wherein the predetermined temperature is in a range of greater than 300° C. to 600° C.4. The apparatus for removing an arsenic compound according to claim 1 , wherein the treatment unit exposes the NOx removal catalyst contaminated with the arsenic compound in a product form as is or after made into a particle form by grinding treatment to the hydrocarbon compounds or the oxygen-containing carbon compounds.5. An apparatus for regenerating the NOx removal catalyst by removing the arsenic compound comprising the apparatus according to .6. The apparatus for regenerating a NOx removal catalyst according to comprising a heat treatment unit which conducts heat-treatment of the NOx removal catalyst from which the arsenic compound has been removed at 250° C. or more in an oxygen atmosphere. This application is a Divisional of U.S. application Ser. No. 14/007,940, filed Sep. 26, 2013, and wherein application Ser. No. 14/007,940 is a national stage application filed under 35 USC §371 ...

Oxidation Catalyst for a Lean Burn Internal Combustion Engine

An apparatus is disclosed. The apparatus comprises a lean-burn internal combustion engine, engine management means and an exhaust system for treating exhaust gas of the engine. The exhaust system comprises a first oxidation catalyst disposed on a first honeycomb monolith substrate. The first oxidation catalyst comprises platinum supported on a first metal oxide support comprising at least one reducible oxide, and is substantially free of alkali metals and alkaline earth metals. The engine management means is arranged, when in use, intermittently to modulate the lambda composition of the exhaust gas entering the first oxidation catalyst to a rich lambda composition. 126-. (canceled)27. A method of recovering an oxidation activity of a first oxidation catalyst aged in an exhaust gas of a lean-burn internal combustion engine , which first oxidation catalyst comprising platinum supported on a first metal oxide support and disposed on a honeycomb substrate monolith , which method comprising the step of intermittently contacting the first oxidation catalyst with exhaust gas modulated to a rich lambda composition , wherein the first metal oxide support comprises at least one reducible oxide and wherein the first oxidation catalyst is substantially free of alkali metals and alkaline earth metals.28. The method according to claim 27 , wherein the at least one reducible oxide is selected from the group consisting of oxides claim 27 , composite oxides and mixed oxides of one or more metal selected from the group consisting of manganese claim 27 , iron claim 27 , tin claim 27 , copper claim 27 , cobalt and cerium claim 27 , and stabilised homologues thereof.29. The method according to claim 28 , wherein the at least one reducible oxide comprises at least one of MnO claim 28 , MnO claim 28 , FeO claim 28 , SnO claim 28 , CuO claim 28 , CoO and CeO.30. The method according to claim 28 , wherein the stabilised homologue of CeOcomprises zirconia claim 28 , at least one non-cerium ...

EXHAUST GAS PURIFICATION SYSTEM, AND NOx PURIFICATION CAPACITY RESTORATION METHOD

There is provided an exhaust gas purification system including: a NOx storage-reduction catalyst that is provided in an exhaust system of an internal combustion engine to reduce and purify NOx in exhaust gas; a degree of deterioration estimation module for estimating a degree of deterioration of the NOx storage-reduction catalyst; a regeneration control unit for executing a regeneration process in which exhaust gas is enriched so as to restore a NOx storage capacity of the NOx storage-reduction catalyst; an interval setting module for setting a target interval from an end of the regeneration process to a start of the subsequent regeneration process by the regeneration control unit; and an interval target value correction module for correcting the target interval based on the degree of deterioration that is estimated by the degree of deterioration estimation module. 1. An exhaust gas purification system comprising:a NOx storage-reduction catalyst that is provided on an exhaust passageway of an internal combustion engine to reduce and purify a nitrogen compound in exhaust gas; anda control unit configured to:estimate a degree of deterioration of the NOx storage-reduction catalyst;execute a regeneration process in which the exhaust gas is enriched so as to restore a NOx storage capacity of the NOx storage-reduction catalyst;set a target interval from an end of the regeneration process to a start of the subsequent regeneration process; andcorrect the target interval based on the estimated degree of deterioration.2. The exhaust gas purification system according to claim 1 , whereinthe control unit shortens the target interval more as the estimated degree of deterioration becomes greater.3. The exhaust gas purification system according to claim 1 , whereinthe control unit sets a target regeneration time from a start of the regeneration process to an end of the regeneration process; andthe control unit corrects the target regeneration time based on the estimated degree of ...

APPARATUS AND METHOD FOR DESULFATION OF A CATALYST USED IN A LEAN BURN METHANE SOURCE FUELED COMBUSTION SYSTEM

An apparatus for reactivating a sulfur poisoned oxidation catalyst operating in the exhaust of a lean burn, methane source (as in natural gas) fueled combustion device as in an engine. The reactivation includes desulfation of the poisoned catalyst through the use of a CO supplementation apparatus in communication with the control unit that is adapted to supplement the CO content in the exhaust reaching the catalyst, while avoiding an overall rich exhaust atmosphere at the catalyst. An example includes the added supply of hydrocarbons to one or more, preferably less than all, of the lean burn engine's combustion chambers such as by an ECU controlled extra supply of NG (e.g., CNG) to some of the combustion chambers. Also featured is a method for desulfation of an oxidation catalyst of a lean burn CNG engine by supplying excess CO to the exhaust reaching the catalyst while retaining an overall lean state, and a method of assembling an apparatus for reactivating a sulfur deactivated lean burn NG engine catalyst by assembling a CO supplementation apparatus with a control unit. 1. An apparatus for catalytic treatment of exhaust from a lean burn , methane sourced fuel combustion device , comprising:an exhaust line adapted for receipt of exhaust from the combustion device;a catalyst positioned for contact with exhaust traveling in the exhaust line;a control unit;a CO supplementation apparatus in communication with the control unit and adapted to supplement the CO content in the exhaust reaching the catalyst, while avoiding an overall rich exhaust atmosphere at the catalyst, so as to desulfate the catalyst.2. The apparatus of wherein the catalyst is a Pd-based catalyst.3. The apparatus of wherein the catalyst comprises Pd and at least a second metal.4. The apparatus of wherein the second metal is Pt.5. The apparatus of wherein the CO supplementation apparatus supplements the CO exhaust content by adding fuel to the CO supplementation apparatus while retaining an overall lean ...

Process for regenerating ruthenium catalysts for the ring hydrogenation of phthalates

THE PRESENT INVENTION RELATES TO A METHOD OF REGENERATING A RUTHENIUM CATALYST FOR THE HYDROGENATION OF PHTHALATES, WHICH COMPRISES FLUSHING THE CATALYST WITH INERT GAS IN A REGENERATION STEP UNTIL THE ORIGINAL ACTIVITY OR PART OF THE ORIGINAL ACTIVITY HAS BEEN ATTAINED.

Regenerated hydrocracking catalyst and method for producing a hydrocarbon oil

This regenerated hydrocracking catalyst is formed by regenerating a used hydrocracking catalyst which contains both a carrier containing zeolite and an amorphous composite metal oxide having solid acidity, and at least one type of active metal selected from the noble metals of group 8 to group 10 of the periodic table and supported on the aforementioned carrier; relative to the total mass of the catalyst, this regenerated hydrocracking catalyst contains 0.05-1 mass% of a carbonaceous material in terms of carbon atoms.

EXTRACTION METHOD FOR REMOVING IMPURITIES FROM MOTHER SOLUTION IN CARBOXYL ACID SYNTHESIS

Reivindicación 1: Un proceso para recuperar un catalizador de metal de una solución madre, dicho proceso comprende los siguientes pasos: a) evaporar dicha solución madre que comprende un ácido carboxílico, dicho catalizador de metal, impurezas, agua y un disolvente en una primera zona de evaporación para producir una corriente de vapor y una corriente de solución madre concentrada; b) evaporar dicha corriente de solución madre concentrada en una segunda zona de evaporación para formar una corriente rica en disolvente y una corriente de solución madre superconcentrada; c) mezclar en una zona de mezclado una solución de agua-disolvente con dicha corriente de solución madre superconcentrada para formar una mezcla acuosa; d) opcionalmente separar impurezas orgánicas de dicha mezcla acuosa en una zona de separación de sólido-líquido para formar una mezcla acuosa purificada; e) agregar un disolvente de extracción a dicha mezcla acuosa o a dicha mezcla acuosa purificada en una zona de extracción para formar una corriente de extracto y una corriente de refinado; y f) opcionalmente separar dicha corriente de extracto y dicha corriente rica en disolvente en una zona de separación para formar una corriente de impurezas orgánicas de alto punto de ebullición y una corriente de disolvente de extracción recuperado. Claim 1: A process for recovering a metal catalyst from a stock solution, said process comprises the following steps: a) evaporating said stock solution comprising a carboxylic acid, said metal catalyst, impurities, water and a solvent in a first zone evaporation to produce a stream of steam and a stream of concentrated stock solution; b) evaporating said concentrated stock solution stream into a second evaporation zone to form a solvent-rich stream and a superconcentrated stock solution stream; c) mixing in a mixing zone a water-solvent solution with said superconcentrated mother solution stream to form an aqueous mixture; d) optionally separating organic impurities ...

Method to reduce condensation in a cooling zone of a continuous catalyst regeneration system

A process for providing a blended cooling air stream to a cooling zone cooler in a continuous catalyst regeneration system. The process includes removing a first effluent stream from a regeneration tower, providing the first effluent stream to a regeneration cooler; providing a first air stream to the regeneration cooler to form a heated first air stream, combining at least a portion of the heated first air stream with a second air stream to form a blended cooling air stream, and providing the blended cooling air stream to a cooling zone cooler.

Extraction method of removing impurities from mother solution during synthesis of carbonic acid (versions)

FIELD: chemistry. SUBSTANCE: present invention pertains to extraction of a metallic catalyst from a mother solution, obtained during synthesis of carbonic acid, usually terephthalic acid. In the first version, the method of separating metallic catalyst from a stream of mother solution involves the following stages: (a) evaporation of the mother solution, containing carbonic acid, the metallic catalyst, impurities, water and a solvent, in the zone of the first evaporator, obtaining a vapour, containing water and solvent, and concentrated mother solution; (b) evaporation of the concentrated mother solution in the zone of the second evaporator, where evaporation in the zone of the second evaporator is carried out at 150-220°C temperature, forming a stream rich in solvent and a stream of super-concentrated mother solution in molten dispersion state, where a total of 95-99 wt % of solvent and water is removed from the mother solution during evaporation stages (a) and (b); (c) mixing the water-solvent solution in the mixing zone, with super-concentrated mother solution, forming an aqueous mixture; (d) separation of organic impurities in the aqueous mixture in the separation zone of solid substance/liquid phase, forming a pure aqueous mixture; (e) addition of extraction solvent to the aqueous mixture or pure aqueous mixture in the extraction zone, forming an extract or rafinate, containing the metallic catalyst; and (f) separation of the extract and the solvent rich stream in the separation zone, forming a stream of organic impurities with high boiling point and a stream of extraction solvent. The invention has three versions. EFFECT: extraction of expensive metallic catalyst in active form, suitable for repeated use, and acetic acid, contained in the mother solution with removal of most impurities present in the extracted stream. 20 cl, 1 tbl, 1 dwg ÐÎÑÑÈÉÑÊÀß ÔÅÄÅÐÀÖÈß RU (19) (11) 2 347 773 (13) C2 (51) ÌÏÊ C07C 51/48 (2006.01) B01J 23/92 (2006.01) ÔÅÄÅÐÀËÜÍÀß ÑËÓÆÁÀ ÏÎ ...

用于苯二甲酸酯环上氢化的钌催化剂的再生方法

本发明涉及一种使用于苯二甲酸酯氢化的钌催化剂再生的方法，其包括在再生步骤中用惰性气体吹扫所述催化剂直到达到初始活性或部分初始活性。

METHOD FOR REGENERATING A DISABLED CATALYST

Process for regenerating a deactivated catalyst

A process for regenerating a catalyst, in particular a plate-type or honeycomb catalyst, which has been at least partially deactivated by catalyst poisons, is described. The catalyst is treated with a gaseous reducing agent and with a polyfunctional complex-forming agent, so that the catalyst poisons are removed.

Oxidation catalyst for internal combustion engine operating on lean mixture

FIELD: engines and pumps. SUBSTANCE: invention relates to oxidation catalyst for internal combustion engine operating on lean mixture. Device includes internal combustion engine operating on lean mixture, engine control unit and exhaust system for cleaning engine exhaust gas. Exhaust system includes the first oxidation catalyst, located on the first monolithic substrate with cellular structure. First oxidation catalyst comprises platinum applied on carrier based on the first metal oxide. Carrier includes at least one oxide capable to recover. First oxidation catalyst does not contain alkali and alkali-earth metals. Engine control unit is made with possibility of periodic modulation of lambda-composition of exhaust gas contacting with the first oxidation catalyst for enrichment of lambda-composition. EFFECT: recovery of catalytic oxidation activity of catalyst. 15 cl, 3 dwg, 1 tbl, 3 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ (21)(22) Заявка: (19) RU (11) (51) МПК B01D 53/94 B01D 53/96 B01J 23/96 B01J 23/656 B01J 23/89 B01J 29/00 F01N 3/18 (13) 2 577 856 C2 (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) (2006.01) ИЗОБРЕТЕНИЯ К ПАТЕНТУ 2013133964/04, 21.12.2011 (24) Дата начала отсчета срока действия патента: 21.12.2011 Приоритет(ы): (30) Конвенционный приоритет: (43) Дата публикации заявки: 27.01.2015 Бюл. № 3 (56) Список документов, цитированных в отчете о поиске: US 6248684 B1, 19.06.2001. EP 1837076 A, 26.09.2007. US 2005/031514 A1, 10.02.2005. EP 1547682 A1, 29.06.2005. US 2009/180943 A1, 16.07.2009. US 5491120 A, 13.02.1996. EP 1712278 A1, 18.10.2006. RU 2278281 С2, 20.03.2006. (86) Заявка PCT: C 2 C 2 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 22.07.2013 GB 2011/052547 (21.12.2011) (87) Публикация заявки PCT: 2 5 7 7 8 5 6 WO 2012/085572 (28.06.2012) R U 2 5 7 7 8 5 6 (45) Опубликовано: 20.03.2016 Бюл. № 8 (73) Патентообладатель(и): ДЖОНСОН МЭТТИ ПАБЛИК ЛИМИТЕД КОМПАНИ (GB) R U 21. ...

Controlled execution of thermocompressors for continuous catalyst regeneration

FIELD: chemistry. SUBSTANCE: invention relates to catalyst regeneration. Described is a catalyst regeneration system comprising: a catalyst regeneration column (104), having a cooling zone (112) which receives a catalyst cooling stream (148); a first thermocompressor (138) using first working steam (142); and a second thermocompressor (140), arranged in parallel to the first thermocompressor, in which nitrogen is used as the working steam (152); and one or more valves (154) which are able to selectively direct the cooling stream (132) into at least one thermocompressor selected from the first thermocompressor (138) or the second thermocompressor (140) to obtain a catalyst cooling stream (148). Described is a catalyst regeneration system method involving: removing a first gas stream (118) from the regeneration column (104); feeding the first gas stream (118) into an air heater (122) to obtain a heated first gas stream (124); splitting the heated first stream (124) to obtain a return stream (126) of the regeneration column and a cooling loop stream (128); cooling the cooling loop stream (128) in the cooler (130) of the cooling zone to obtain a cooled stream (132); selectively feeding the cooled stream (132) into at least one thermocompressor selected from the first thermocompressor (138) using first working steam (142) or the second thermocompressor (140) using nitrogen as the second working steam (152), to obtain a catalyst cooling stream (148); and feeding the catalyst cooling stream (148) into the regeneration column (104). EFFECT: simple continuous catalyst regeneration. 10 cl, 1 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) 2 467 799 (13) C1 (51) МПК B01J 38/02 B01J 38/12 B01J 38/32 (2006.01) (2006.01) (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2011139305/04, 12.02.2010 (24) Дата начала отсчета срока действия патента: 12.02.2010 (73) Патентообладатель(и): ЮОП ЛЛК (US) (45) Опубликовано: 27.11.2012 ...

Activation method for hydrocarbon oxidation VPO catalyst

本发明公开了一种用于烃类氧化VPO催化剂的活化方法，该方法包括：一、将活化气氛和烃类氧化VPO催化剂混合后进入反应管中；二、进入反应管中的活化气氛和烃类氧化VPO催化剂通过活化区进行活化，得到活化后的烃类氧化VPO催化剂和尾气；三、活化后的烃类氧化VPO催化剂和尾气排出后分离。本发明将烃类氧化VPO催化剂和活化气氛混合后从上到下连续匀速通过各个不同温度的活化区并同时进行活化，实现了烃类氧化VPO催化剂的连续活化，且连续活化过程稳定性好，不仅提高了烃类氧化VPO催化剂的活化处理能力，还保证了活化后烃类氧化VPO催化剂性能的均一性，简化了操作步骤，节约了活化成本。

Hydrogen Sulfide Removal Apparatus

본 발명은 액상촉매가 채워져 있고, 그 내부로 황화수소를 포함하는 가스가 유입되어 황화수소를 액상촉매에 접촉시키는 접촉부(2); 상기 접촉부(2)에 연결설치되어 황화수소가 접촉된 액상촉매가 유입되어 접촉된 황화수소가 황 입자로 전환된 후 배출되고, 액상촉매의 일부가 접촉부(2)로 반송되는 반응/분리부(4); 상기 반응/분리부(4)에 연결설치되고 반응/분리부(4)의 액상촉매 일부가 유입되어 액상촉매를 재생한 후 반응/분리부(4)로 제공하는 재생부(6)를 포함하는 것을 특징으로 하는 황화수소 제거장치에 관한 것이다. The present invention is filled with a liquid catalyst, the contact portion (2) for introducing a gas containing hydrogen sulfide into the liquid sulfide in contact with the liquid catalyst; The reaction / separation unit 4 connected to the contact unit 2 and in which the liquid sulfide contacted with hydrogen sulfide flows in is converted into sulfur particles and discharged, and a part of the liquid catalyst is returned to the contact unit 2. ; And a regeneration unit 6 connected to the reaction / separation unit 4 and having a part of the liquid catalyst of the reaction / separation unit 4 introduced therein to regenerate the liquid catalyst and then provide the reaction / separation unit 4 to the reaction / separation unit 4. It relates to a hydrogen sulfide removal device characterized in that. 소화가스, 황화수소, 탈황 Digestion gas, hydrogen sulfide, desulfurization

Catalyst regeneration chlorinator for chemical industry experiments

本发明公开了一种化工实验用催化剂再生氯化器，属于石油化工技术领域，其导流锥体的锥度朝向与催化剂在氯化器外壳内的前进方向相反，导流锥体与第二导流锥筒的锥度朝向相反且导流锥体设置在第二导流锥筒的内部，且导流锥体的锥度大于第二导流锥筒的锥度，由于导流锥体迎着催化剂的流动方向设置在第二导流锥筒的内部，进而第二导流锥筒和导流锥体相互配合降低催化剂的流动速度并将催化剂均匀的摊薄摊开，进而均匀缓慢的流入第二导流内筒与第二导流外筒间的环形空间内与氯气进行反应，可以提高催化剂与氯气的接触面积和接触均匀性，提升催化剂与氯气之间的混合效果和反应率，实现催化剂的完全氯化更新以提升催化剂的催化效果。

Regeneration method of inactivated COS (COS) hydrolyzing agent

本发明涉及失活催化剂再生技术领域，具体涉及一种失活COS水解剂的再生方法。本发明提供的失活COS水解剂的再生方法，包括如下步骤：在还原性气体的气氛下，对失活的COS水解剂进行第一次加热，保温，得到第一再生COS水解剂；保持还原性气体的气氛，对第一再生COS水解剂进行第二次加热，然后向所述还原性气体的气氛中通入含有饱和水蒸气的二氧化碳气体，在第二次加热温度下进行保温，得到再生后的COS水解剂。本发明提供的失活COS水解剂的再生方法，是一种无需溶液洗涤，不添加活性组分添加剂，可有效地节省再生周期的绿色再生方法。

Regeneration method of catalyst for preparing isobutene through skeletal isomerization of inactivated n-butene

本发明提供一种失活正丁烯骨架异构化制备异丁烯用催化剂的再生方法，包括以下步骤：（1）将失活正丁烯骨架异构化制备异丁烯用催化剂装入固定床反应器中，将有机溶剂通入固定床反应器；（2）80‑200℃下保压再生5‑20h；（3）将固定床反应器内的压力降至常压，将惰性气体通入固定床反应器并吹扫3‑6h。本发明具有再生工艺简单、再生温度低、再生时间短、再生后催化剂性能可以接近或达到新鲜催化剂的水平等优点。

Methods of catalyst desorption treatment

FIELD: chemistry.SUBSTANCE: described is a method for improved desorption treatment of spent catalyst adsorbing volatile hydrocarbons. Desorption tank is divided into two zones. First zone is a desorption zone in which removal of a significant portion of volatile hydrocarbons takes place under severe conditions. First zone operates under conditions of upper desorption zone, including temperature from 200 °C (392 °F) to 650 °C (1202 °F) and pressure between 2 psig. excess pressure (13.7 kPa (g)) to 75 lb/sq. In excess pressure (517 kPa (g)). After desorption of the catalyst, the desorbed catalyst is fed into the lower cooling zone for cooling under less stringent conditions. Invention also relates to a device for catalyst desorption and cooling, which comprises: a vessel having an upper portion, wherein said upper portion includes a hole, a first baffle and an outlet, an upper desorption zone having a first inlet and a second baffle and a lower cooling zone having a second inlet, a third baffle and a lower bore, wherein the upper desorption zone is in fluid communication with the lower cooling zone. First guiding baffle is a cone-shaped guiding baffle having an upper section which is connected to the inner part of the vessel, and a lower section which is cut off and has a hole. Second guiding baffle is a cylindrical guiding baffle with an upper section extending from the vessel inside and bending downwards. Third guiding baffle is a cone-shaped guiding baffle with an upper section connected to the inner part of the vessel, and a lower section that is cut off and has a hole. Flow rates, temperature, pressure, desorption zone and cooling zone are selected and designed so that by the time the catalyst leaves the desorption zone minimum amounts of volatile hydrocarbons are left on it.EFFECT: this design enables effective desorption of volatile hydrocarbons under severe conditions and prevents desorption of these components in any other location of the plant, which causes ...

Method for activating transition metal catalyst

本发明的目的在于提供一种过渡金属催化剂活化方法，方法包括1)将失活过渡金属催化剂浸渍与溶液中，在200‑240℃的水热条件下进行处理，处理时长为8‑12h，得到混合物，所述溶液含有2‑6mol/L的葡萄糖，1‑3mol/L的柠檬酸；2)将步骤1)得到的混合物进行过滤，在600‑800℃的条件下裂解2‑3h，得到裂解后的产物；3)将步骤2)得到的裂解后的产物重复步骤1)及步骤2)，直至得到的裂解后的产物的质量为浸渍前失活过渡金属催化剂质量的1.03‑1.05倍，得到裂解后的催化剂等步骤，通过本发明活化方法得到的过渡金属催化剂具备与新的过渡金属催化剂基本相同的活性。

METHOD OF CARBONILATION USING PRELIMINARY TREATED ZEOLITE CATALYST

РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2018 125 662 A (51) МПК B01J 29/18 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2018125662, 25.11.2016 (71) Заявитель(и): БП КЕМИКЭЛЗ ЛИМИТЕД (GB) Приоритет(ы): (30) Конвенционный приоритет: 18.12.2015 EP 15201113.6 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 18.07.2018 R U (43) Дата публикации заявки: 20.01.2020 Бюл. № 2 (72) Автор(ы): ХЕЙЗЕЛ Николас Джон (GB), ЛО Дэвид Джон (GB) (86) Заявка PCT: (87) Публикация заявки PCT: WO 2017/102284 (22.06.2017) R U (54) СПОСОБ КАРБОНИЛИРОВАНИЯ С ИСПОЛЬЗОВАНИЕМ ПРЕДВАРИТЕЛЬНО ОБРАБОТАННОГО ЦЕОЛИТНОГО КАТАЛИЗАТОРА (57) Формула изобретения 1. Способ карбонилирования диметилового эфира, содержащего монооксид углерода газом в присутствии цеолитного катализатора карбонилирования, этот способ включает последовательно проводимые стадии: (i) предварительной обработки катализатора; и (ii) карбонилирования диметилового эфира, содержащего монооксид углерода газом с получением продукта реакции, содержащего метилацетат; где проводимая на стадии (i) предварительная обработка катализатора включает стадии: (a) введения катализатора во взаимодействие с первой смесью для обработки, содержащей водяной пар; и (b) введение катализатора, обработанного на стадии (а), во взаимодействие со второй смесью для обработки, содержащей инертный газ и по меньшей мере один из следующих: диметиловый эфир и метанол. 2. Способ по п. 1, в котором первой смесью для обработки является смесь водяного пара и одного или большего количества инертных газов. 3. Способ по п. 1 или 2, в котором вторая смесь для обработки дополнительно содержит водяной пар. 4. Способ по п. 2, в котором вторая смесь для обработки содержит водяной пар при парциальном давлении, находящемся в диапазоне от 0,8 до 8 бар (от 80 до 800 кПа). Стр.: 1 A 2 0 1 8 1 2 5 6 6 2 A Адрес для переписки: 105082, Москва, пер. Спартаковский, 2, стр. 1, секция 1, этаж 3, ЕВРОМАРКПАТ 2 0 1 8 1 ...

Method for treating exhaust gas

본 발명은 소결로 후단부에서 추출된 배기가스로부터 황산화물을 제거하는 단계; SCR 촉매를 이용하여 상기 배기가스로부터 질소산화물을 제거하는 단계; CO 산화 촉매를 이용하여 상기 배기가스로부터 CO를 제거하는 단계; 및 배기가스를 승온하여 SCR 촉매 및 CO 산화 촉매를 재생하는 단계를 포함하는 소결로 배기가스 처리 방법에 관한 것으로, 본 발명에 따르면 황산화물에 의한 SCR 촉매 및 CO 산화 촉매의 성능 저하를 방지할 수 있을 뿐만 아니라, 촉매를 탈거하지 않고도 공정 내에서 간편하게 촉매를 재생할 수 있다.

Method for regenerating catalysts in dehydrogenation process

본 발명은 반응물 스트림이 연속적으로 유동하는 2개 이상의 반응영역을 가지는 탈수소화 반응 시스템에서 코크발생으로 인한 촉매의 비활성화를 방지함으로써 촉매의 반응 성능을 향상시킬 수 있는 촉매 재생 방법 및 촉매 재생 시스템을 포함하는 탈수소화 반응 장치에 관한 것으로, 본 발명에 의하면 코크 발생으로 인한 촉매의 비활성화를 방지함으로써 촉매의 반응 성능을 향상시킬 수 있어 전체 공정 수율을 향상시킬 수 있다. 또한, 촉매 재생 장치에서 과량의 코크 연소에 의해 발생할 수 있는 문제점을 감소시켜 공정 운전성이 개선되는 효과를 나타낸다.

A method for regenerating scr catalyst

본 발명은 일측면으로서, SCR 과정을 거친 후 사용이 끝난 SCR 촉매를 인출하는 단계; 상기 인출된 촉매에 세정제를 분사하는 단계; 상기 세정제가 분사된 촉매에 물을 공급하여 세정하는 단계; 상기 세정된 촉매를 건조하는 단계; 및 상기 건조된 촉매에 촉매활성제를 담지하는 단계를 포함하는 것을 특징으로 하는 SCR 촉매의 재생방법에관한 것으로, SCR 설비 내에서 촉매 재생작업을 하지 않아도 되므로 장시간 SCR 공장을 정지할 필요가 없고, 폐 SCR 촉매를 외부로 반출하지 않아도 되어 촉매의 손상을 방지하고 비용을 저감할 수 있으며, 대규모의 재생작업장 없이도 효율적인 SCR 촉매를 재생시킬 수 있어 환경개선 및 경제성장에 큰 기여를 할 수 있는 SCR 촉매의 재생방법을 제공한다. The present invention, in one aspect, the step of withdrawing the SCR catalyst used after the SCR process; Spraying a detergent onto the extracted catalyst; Supplying water to the catalyst sprayed with the cleaning agent to clean the water; Drying the washed catalyst; And it relates to a regeneration method of the SCR catalyst comprising the step of supporting the catalyst activator on the dried catalyst, there is no need to stop the SCR plant for a long time because there is no need to regenerate the catalyst in the SCR facility, waste It is possible to prevent the damage of the catalyst and to reduce the cost by not having to take out the SCR catalyst to the outside, and it is possible to recycle the efficient SCR catalyst without the need for a large-scale regeneration workshop, which can contribute to environmental improvement and economic growth. Provide a playback method.

Denitrification apparatus that improves denitrification efficiency using pellet catalyst

The present invention relates to a denitrification apparatus to increase denitrification efficiency when using pellet catalyst, which receives and denitrifies exhaust gas to discharge the denitrified exhaust gas. According to the present invention, the denitrification apparatus comprises a catalyst module including at least one catalyst to denitrify the inflow exhaust gas. The catalyst has closed upper and lower parts, has a partition downwardly formed from the center of the upper part, has an inlet formed on one side of a side surface of the upper part, and has an outlet formed on the other side of the side surface of the upper part, wherein the exhaust gas flows through the inlet, moves down in accordance with guidance of the partition, and moves up toward the outlet to be discharged. Accordingly, time for mixing the exhaust gas with a reactant is increased while the exhaust gas flows through the inlet, moves down in accordance with the guidance of the partition, and moves up toward the outlet to be discharged, thereby increasing denitrification efficiency when a pellet catalyst for increasing the denitrification efficiency is used.

Regeneration of catalyst/absorber

CATALYTIC PROCESS FOR OXIDIZING DIRECTLY SULFUR, AT LOW TEMPERATURE, THE H2S CONTAINED IN LOW CONCENTRATION IN A GAS AND CATALYST FOR IMPLEMENTING IT

PROCESSING OF OLEFIN METATHESIS CATALYSTS IN A VIBRATING HELICOIDAL CONVEYOR

Turndown thermocompressor design for continuous catalyst recovery

本发明提供用于使催化剂再生的系统和方法，其包括具有冷却区的催化剂再生塔，其接收通过冷却气体回路产生的催化剂冷却料流。所述系统和方法包括使用第一原动蒸汽的第一热压机和使用第二原动蒸汽的第二热压机以将催化剂冷却料流供入再生塔。第二热压机与第一热压机平行操作。第一热压机可使用燃烧空气作为原动蒸汽。第二热压机可使用氮气作为原动蒸汽。

Process and apparatus for the purification of contaminated water by activated ozone

A process is provided for the purification of water which is contaminated with environmentally undesirable components, such as halogenated hydrocarbons, wherein the contaminated water or the gaseous and/or liquid components present therein or derived therefrom are subjected to at least two of the following treatments: treatment with ozone, treatment with UV radiation, treatment with a solid catalyst. A combined treatment with ozone and a solid catalyst, such as activated carbon, is preferred. An apparatus for a cocurrent or countercurrent realisation of the purification process is also provided. The apparatus can comprise one or more purification reactors.

Method for cleaning and regenerating molecular sieves used for the treatment of styrene.

Soot blower modified blowing angle for SCR system

본 발명은 각종 오염원에서 배출되는 배기가스에 포함된 질소산화물 처리시설인 분사각을 조정한 SCR 설비용 수트블로어에 관한 것으로, 그 목적은 배기가스 흐름에 의해 반응기 내부의 촉매에 침적 또는 고착되는 회분(ash)과 검댕(soot)을 효율적으로 제거하여 촉매의 막힘(clogging)에 의한 압력강하를 방지하고 촉매의 비활성화를 감소시킴으로서 촉매의 수명을 연장시키도록 하는 분사각을 조정한 SCR 설비용 수트블로어를 제공함에 있다. The present invention relates to a soot blower for an SCR plant in which an injection angle, which is a nitrogen oxide treatment facility included in exhaust gases emitted from various pollutants, is adjusted. A soot blower for SCR plants with an effective removal of ash and soot, which prevents pressure drop due to clogging of catalyst and reduces catalyst deactivation to extend catalyst life to extend catalyst life. In providing. 상기 목적달성을 위한 본 발명은 압축공기 라인과 연결된 랜스튜브에서 수평 양방향으로 분기되어 나간 노즐헤더에 일정간격으로 배열되어 촉매에 압축공기를 분사하는 분사노즐에 있어서, 상기 노즐헤더(4)의 하부에 형성된 분사노즐(5)의 압축공기 분사영역이 서로 중복됨이 없도록 인접한 두개가 서로 반대방향을 향하게 분사각 중심이 수직방향과 9° 또는 -9°로 반복배열하고, 분사노즐(5)에서의 압축공기 분출압력을 3~5kgf/cm₂로 유지하는 것을 특징으로 하는 분사각을 조정한 SCR 설비용 수트블로어 관한 것을 그 기술적 요지로 한다. The present invention for achieving the above object is arranged in the nozzle header which is branched horizontally in both directions in the lance tube connected to the compressed air line at a predetermined interval in the injection nozzle for injecting compressed air to the catalyst, the lower portion of the nozzle header (4) In order to prevent the compressed air injection zones of the injection nozzles 5 formed on each other from overlapping with each other, the centers of the injection angles are repeatedly arranged in a vertical direction of 9 ° or -9 ° so that the two adjacent sides face each other in opposite directions. The technical gist of the soot blower for the SCR installation with the adjusted injection angle is characterized by maintaining the compressed air blowing pressure of 3 ~ 5kgf / cm₂. SCR(선택적촉매환원법), 질소산화물, 분사노즐, 수트블로어(soot blower) Selective Catalytic Reduction (SCR), Nitrogen Oxide, Injection Nozzle, Soot Blower

Process for cleaning and regenerating molecular sieves used for the treatment of styrene

L'invention concerne un procédé de nettoyage et un procédé de régénération de tamis moléculaire ayant été mis en contact avec du styrène. Le tamis moléculaire doit être rincé par un solvant approprié, de préférence l'éthylbenzène, puis soumis à un traitement thermique. The invention relates to a method for cleaning and a method for regenerating molecular sieves which have been contacted with styrene. The molecular sieve should be rinsed with a suitable solvent, preferably ethylbenzene, and then subjected to heat treatment.

REGENERATION OF CATALYSTS FOR REFORMING OR ISOMERIZATION OR DEHYDROGENATION OF PARAFFINS IN A VIBRANT HELICOIDAL SPIRE

Oxidation catalyst for a lean burn internal combustion engine

一种包含贫燃内燃发动机、发动机管理工具和用于处理发动机排气的排气系统的装置，所述排气系统包含布置在第一蜂窝整料基底上的第一氧化催化剂，所述第一氧化催化剂包含负载在包含至少一种可还原氧化物的第一金属氧化物载体上的铂，其中所述第一氧化催化剂基本上不含碱金属和碱土金属，其中布置所述发动机管理工具以在使用时间歇性地将进入第一氧化催化剂的排气的λ组成调节至富λ组成。

Process and apparatus for purifying contaminated water by means of activated ozone

Pluggage removal method for scr catalysts and systems

The present disclosure relates to methods for treating an SCR catalyst or components of an SCR system having a decreased NOx potential efficiency as a result of particulate pluggage in the system or in one or more channels in the SCR catalyst which renders at least a portion of the catalytic active areas inaccessible for the flue gas. The methods include removal of the particulates and plug(s) using a blasting stream of a pressurized carrier gas having a particulate blasting medium directed at the SCR catalyst or component of an SCR system.

Apparatus for stripping finely dividfd solids

Extraction process for removal of impurities from mother liquor in the synthesis of carboxylic acid

A METHOD FOR REMOVING IMPURITIES FROM A MOTHER LIQUOR (101) COMPRISING A CARBOXYLIC ACID, A METAL CATALYST, IMPURITIES BY (A) EVAPORATING THE MOTHER LIQUOR (101) COMPRISING A CARBOXYLIC ACID, THE METAL CATALYST, IMPURITIES, WATER AND A SOLVENT IN A FIRST EVAPORATOR ZONE (121) TO PRODUCE A VAPOR STREAM (104) AND A CONCENTRATED MOTHER LIQUOR STREAM (105); (B) EVAPORATING THE CONCENTRATED MOTHER LIQUOR STREAM (105) IN A SECOND EVAPORATOR ZONE (150) TO FORM A SOLVENT RICH STREAM (144) AND A SUPER CONCENTRATED MOTHER LIQUOR STREAM (145); (C) SEPARATING ORGANIC IMPURITIES (146) WITH A WATER-SOLVENT SOLUTION (149) FROM THE SUPER CONCENTRATED MOTHER LIQUOR (145) IN A SOLID-LIQUID SEPARATION ZONE (151) TO FORM AN AQUEOUS STREAM (147) AND A SECOND AQUEOUS STREAM (148); (D) MIXING IN A MIXING ZONE WATER AND OPTIONALLY AND EXTRACTION SOLVENT (108) WITH THE AQUEOUS STREAM (147) AND SECOND AQUEOUS STREAM (148) TO FORM AN AQUEOUS MIXTURE; AND (E) ADDING AN EXTRACTION SOLVENT (108) TO THE AQUEOUS MIXTURE (107) IN AN EXTRACTION ZONE (123) TO FORM AN EXTRACT STREAM (109) AND A RAFFINATE STREAM (110).

Method to reduce condensation in cooling zone cooler

Systems and processes for providing a blended cooling air stream to a cooling zone cooler in a continuous catalyst regeneration system are provided that include removing a first effluent stream from a regeneration tower, providing the first effluent stream to a regeneration cooler; providing a first air stream to the regeneration cooler to form a heated first air stream, combining at least a portion of the heated first air stream with a second air stream to form a blended cooling air stream, and providing the blended cooling air stream to a cooling zone cooler.

Process for treating contaminated water with ozone

Methods for catalyst stripping

A process is disclosed for an improved catalyst stripping process. The stripping vessel is divided into two zones. The first zone is a stripping zone where a substantial portion of the volatile hydrocarbons is removed at higher severity conditions. After the catalyst is stripped, the stripped catalyst moves to the lower cooling zone to be cooled at lower severity conditions. The flow rates, temperatures, pressures and the stripping and cooling zones are designed to ensure there is minimal volatile hydrocarbons on the catalyst by the time it leaves the stripping vessel. This design enables efficient stripping of volatile hydrocarbons at high severity conditions and eliminates these components from being stripped off elsewhere in the unit causing process and equipment issues.

Method of shutting down a reactor

제1 고온에서 작용하는 크롬-함유 촉매을 가지는 촉매층을 가지는 탈수소화 반응기의 종료 절차는 촉매층을 제1 냉각 가스로 제1 고온보다 낮은 제2 고온까지 냉각시키고, 제1 냉각 가스를 제거하고, 촉매층에 환원 가스를 도입하고, 촉매층을 제2 냉각 가스로 제2 고온에서부터 제3 고온까지 냉각시키고, 환원 가스를 제거하고, 촉매층을 제4 고온까지 냉각시키고, 공기를 도입하여 촉매를 주위 온도까지 냉각시키는 것을 포함하며, 여기서 탈수소화 반응기는 종료된다. 제2 냉각 가스는 환원 가스와 동일하거나, 상이할 수 있다. 게다가, 환원 가스는 제3 냉각 가스에 의해 반응기로부터 퍼징될 수 있다. The termination procedure of the dehydrogenation reactor having a catalyst layer having a chromium-containing catalyst operating at a first high temperature is to cool the catalyst layer to a second high temperature lower than the first high temperature with a first cooling gas, remove the first cooling gas, and add the catalyst layer. A reducing gas is introduced, the catalyst layer is cooled from the second high temperature to the third high temperature with a second cooling gas, the reducing gas is removed, the catalyst layer is cooled to a fourth high temperature, and air is introduced to cool the catalyst to the ambient temperature. It includes, wherein the dehydrogenation reactor is terminated. The second cooling gas may be the same as or different from the reducing gas. In addition, the reducing gas can be purged from the reactor by the third cooling gas.

A method for regenerating catalysts

본 발명은 NO 2 의 산화력을 이용하는 것을 특징으로 하며, NO 및 공기를 산화촉매에 주입하여 NO 2 를 생성시키는 단계를 포함하는 촉매재생방법 또는 NO 및 공기를 산화촉매가 아닌 직접 재생촉매에 주입하는 단계를 포함하는 촉매재생방법에 관한 것이며, 재생온도의 감소에 의한 촉매 신터링을 방지하고, 저온에서는 재생할 수 없는 코크까지 연소하여 재생 효율을 높임으로 촉매활성도를 유지할 수 있을 뿐 아니라 유지비용이 저렴한 유용한 재생방법을 제안하는 것이다 The present invention is characterized by using the oxidizing power of the NO 2, and by injecting a NO and air to the oxidation catalyst is injected directly to the regenerated catalyst than the catalyst regeneration method or the catalytic oxidation of NO and air, comprising the step of generating NO 2 It relates to a catalyst regeneration method comprising a step, to prevent catalyst sintering by reducing the regeneration temperature, to burn the coke that can not be regenerated at low temperatures to increase the regeneration efficiency to maintain the catalytic activity as well as low maintenance costs Suggest a useful playback method. 촉매, 재생, NO2 Catalyst, regenerated, NO2

Regeneration method of benzene alkylation solid acid catalyst

一种苯烷基化固体酸催化剂的再生方法，包括：利用气体吹扫反应器内的固体酸催化剂；在所述反应器的进料口连续注入正己烷并加热，对所述固体酸催化剂进行冲洗，在所述反应器的出料口排出夹带苯烷基化反应残留物的正己烷；停止注入正己烷，利用气体将所述反应器内的液体吹扫干净，并降温。本发明的再生方法中使用的再生液为正己烷，可以提高孔道中残留物的溶解度，增强再生效果。同时可以避免烧碳再生对催化剂孔道结构的永久性破坏，延长催化剂寿命。

In-reactor regeneration method of catalyst for preparing ethylbenzene

本发明涉及制备乙苯技术领域，尤其涉及一种用于制备乙苯的催化剂器内再生方法，包括：A)将反应器用氮气充压，以排出反应器内残留的液相苯；B)将氮气加热至200～400℃，吹扫反应器至从反应器排出的废气中可燃气降至300ppm以下，停止加热氮气，吹扫继续；C)待所述反应器中各床层的温度降至40℃后，并入净化空气，待所述各床层的温度稳定后，只用净化空气吹扫；D)再次向所述反应器中通入加热的氮气，至反应器中各床层催化剂的温度升高至295～305℃，进行三阶段升温再生，当反应器中CO 2 的体积浓度不发生变化且小于0.05％，催化剂器内再生完成。本发明提供的再生方法用时短，再生效果较优。

Rotating wheel type low-temperature SCR denitration and on-line continuous regeneration device and application thereof

本发明涉及转轮式低温SCR脱硝及在线连续再生装置及其应用，装置包括转轮催化主体单元、再生气流输送风机及再生气流加热器，转轮催化主体单元包括间歇转动的催化剂转轮、以及分别设置在催化剂转轮两端的进气端气体分隔箱及出气端气体分隔箱，进气端气体分隔箱、出气端气体分隔箱共同将催化剂转轮在圆周方向上隔离出低温SCR反应区、催化剂再生预加热区以及热再生区；装置应用于包括焦化、钢铁烧结、氧化铝焙烧、陶瓷及玻璃烧制等工业窑炉烟气的低温脱硝处理。与现有技术相比，本发明利用独特设计的转轮装置，可同步完成烟气低温SCR脱硝处理及催化剂的在线连续再生，能耗低，催化剂使用寿命长，具有很好的应用前景。

Benzene Alkylated Solid Acid Catalyst Regeneration Method

TREATMENT OF OLEFIN METATHESIS CATALYSTS IN A VIBRATING HELICOIDAL CONVEYOR

L'invention concerne un procédé de traitement des catalyseurs de métathèse des oléfines consistant à faire transiter les particules de catalyseurs dans au moins un transporteur hélicoïdal vibrant, à les soumettre sur au moins une partie de leur trajet et de préférence sur la majeure partie de leur trajet à un profil de température et à les mettre au contact avec au moins un fluide sur au moins une partie de leur trajet. L'élévateur hélicoïdal vibrant (12) permet la régénération de catalyseurs de métathèse des oléfines, il comprend une zone de combustion (14) et une zone de calcination (15), ainsi qu'une zone de préchauffage, une zone de strippage des hydrocarbures, et une zone de refroidissement du catalyseur. The invention relates to a method of treating olefin metathesis catalysts comprising passing the catalyst particles through at least one vibrating helical conveyor, subjecting them over at least part of their path and preferably over most of their path. path to a temperature profile and contacting them with at least one fluid over at least part of their path. The vibrating helical elevator (12) allows the regeneration of olefin metathesis catalysts, it comprises a combustion zone (14) and a calcination zone (15), as well as a preheating zone, a hydrocarbon stripping zone , and a catalyst cooling zone.

CATALYST CONTINUOUS REGENERATION REACTOR WITH DEFLECTING MEANS FOR DISPLACING CATALYST FLOW IN THE OXYCHLORIZATION AREA

Regeneration method of inactivated COS (COS) hydrolyzing agent

本发明涉及失活催化剂再生技术领域，具体涉及一种失活COS水解剂的再生方法。本发明提供的失活COS水解剂的再生方法，包括如下步骤：在还原性气体的气氛下，对失活的COS水解剂进行第一次加热，保温，得到第一再生COS水解剂；保持还原性气体的气氛，对第一再生COS水解剂进行第二次加热，然后向所述还原性气体的气氛中通入含有饱和水蒸气的二氧化碳气体，在第二次加热温度下进行保温，得到再生后的COS水解剂。本发明提供的失活COS水解剂的再生方法，是一种无需溶液洗涤，不添加活性组分添加剂，可有效地节省再生周期的绿色再生方法。

Catalyst regeneration and formaldehyde recovery method

一种催化剂再生及甲醛回收方法，其中所述催化剂用于以甲醛为反应原料的反应中，所述方法包括将所述催化剂在包含再生气体的环境下焙烧，然后将焙烧后的气体与吸收液接触使吸收液吸收甲醛得到含有甲醛的回收液。该方法能解决现有技术中醋酸甲酯与甲醛缩合制丙烯酸甲酯过程中催化剂结焦失活及甲醛利用率低的问题。

Method of shutting down a reactor

A procedure for shutting down a dehydrogenation reactor having a catalyst bed with a chromium-containing catalyst operating at a first elevated temperature comprises cooling the catalyst bed with a first cooling gas to a second elevated temperature lower than the first elevated temperature, removing the first cooling gas, introducing a reducing gas to the catalyst bed, cooling the catalyst bed with a second cooling gas from the second elevated temperature to a third elevated temperature, removing the reducing gas, cooling the catalyst bed to a fourth elevated temperature, and introducing air to cool the catalyst to ambient temperature, whereby the dehydrogenation reactor is shut down. The second cooling gas may be the same as, or different from, the reducing gas. Moreover, the reducing gas may be purged from the reactor by a third cooling gas

PROCEDURE FOR THE RECOVERY AND REFINING OF THE RHODIUM

Activation method of catalyst in methyl acetate preparation process

本申请公开了一种制备乙酸甲酯过程中催化剂的活化方法。该方法包括：S100获得氢型丝光沸石分子筛催化剂；S200将所述氢型丝光沸石分子筛催化剂进行有机胺吸附处理Ⅰ，得到吸附催化剂Ⅰ；S300在所述吸附催化剂Ⅰ存在的条件下，将含有二甲醚和一氧化碳的原料气，反应，得到乙酸甲酯以及低活性催化剂Ⅰ；S400对所述低活性催化剂Ⅰ进行原位有机胺吸附处理Ⅱ，得到活化的吸附催化剂Ⅱ；S500在所述吸附催化剂Ⅱ存在的条件下，将含有二甲醚和一氧化碳的原料气，反应，得到乙酸甲酯以及低活性催化剂Ⅱ。该方法对活性降低的催化剂进行二次有机胺吸附，将催化剂重新活化，因此将十二元环内酸性中心重新覆盖，提高了催化剂的活性。

Method for deagglomerating and re-exposing catalyst in a fluid bed reactor

A fluid bed catalyst which has lost activity or fluidization quality through agglomeration, contamination, or a physical or chemical change on the surface of the catalyst is deagglomerated and/or its surface re-exposed, by contacting the fluidized catalyst with a high velocity gas sufficient to cause multiple collisions among the catalyst particles and thereby deagglomerating the particles and/or abrading the surface of the particles to expose fresh catalyst.

A process for rejuvenating a catalyst composition

This disclosure relates to a method for rejuvenating a catalyst, comprising contacting the catalyst with a gaseous feedstock at rejuvenation conditions for at least one hour to form a rejuvenated catalyst and a gaseous product, wherein the catalyst comprises at least 10 wt.% of a molecular sieve, wherein the catalyst prior to the contacting step comprises from 0.001 wt.% to 45 wt.% of hydrocarbons and 0.001 to 10 wt.% nitrogen containing components based on the total weight of the catalyst prior to the contacting step, wherein the molecular sieve comprises at least one of a MCM-22 family molecular sieve, a molecular sieve having a framework type of *BEA, a molecular sieve having a framework type of FAU, and a molecular sieve having a framework type of MOR, wherein the gaseous feedstock comprises at least one of N2, H2, alkane, He, Ar, CO, and CO2, wherein the gaseous product has at least a portion of the gaseous feedstock and at least a portion of the hydrocarbons of the catalyst and at least a portion of the nitrogen containing components of the catalyst, wherein the rejuvenation conditions comprise a temperature in the range from about 400 to 6000C, a pressure in the range from about 101.3 kPa-a to 10130 kPa-a, a space hourly velocity in the range of from 0.05 to 10 hr-1.

Method of regenerating Honeycomb type SCR catalyst by air lift loop reactor

본 발명은 선택적촉매환원반응(SCR)에 사용되는 하니컴형(honeycomb)형 SCR 촉매의 재생방법에 관한 것으로서, 산업용 보일러에서 사용된 하니컴형 SCR 폐 촉매를 0.1M∼1.0M H 2 SO 4 , 0.005M∼0.1M NH 4 VO 3 및 0.005M∼0.1M (NH 4 ) 2 WO 3 을 함유한 혼합액으로 기포유동장치에서 재생시키는 것을 특징으로 하는 하니컴형 SCR 촉매의 재생 방법이 제공된다. The present invention relates to a method for regenerating a honeycomb type SCR catalyst used in a selective catalytic reduction reaction (SCR), wherein the honeycomb type SCR waste catalyst used in an industrial boiler is 0.1M to 1.0MH 2 SO 4 , 0.005M. There is provided a method for regenerating a honeycomb type SCR catalyst characterized by regeneration in a bubble flow apparatus with a mixed liquid containing ˜0.1 M NH 4 VO 3 and 0.005 M to 0.1 M (NH 4 ) 2 WO 3 .

METHOD FOR CLEANING WASTE WATER BY ACTIVE OZONE.

A process is provided for the purification of water which is contaminated with environmentally undesirable components, such as halogenated hydrocarbons, wherein the contaminated water or the gaseous and/or liquid components present therein or derived therefrom are subjected to at least two of the following treatments: treatment with ozone, treatment with UV radiation, treatment with a solid catalyst. A combined treatment with ozone and a solid catalyst, such as activated carbon, is preferred. An apparatus for a cocurrent or countercurrent realisation of the purification process is also provided. The apparatus can comprise one or more purification reactors.

The first equipment for drying of SCR catalyst regeneration air blast

本发明属于环境工程领域，具体涉及SCR催化剂再生鼓风初干装置。SCR催化剂再生鼓风初干装置，其包括对SCR催化剂进行承载的底座，位于底座的两侧设置有导向座，导向座上设置有水平移动机构，水平移动机构上设置有垂直升降机构，垂直升降机构与出风顶盖连接，还包括鼓风装置，鼓风装置与出风顶盖连接。本发明设计了一种定位准确、自动化作业的鼓风初干装置，能够有效缩短SCR催化剂初干的时间，提高干燥的效果，同时也能够对SCR催化剂孔道的水进行收集和干燥气体进行无害化处理，能避免SCR催化剂孔道中的水和使用后的干燥气体造成的环境污染。

Olefin producing reactor system and process using direct conversion of methane

본 발명의 일 실시예에 따르면, 공급된 탄화수소 피드로부터 메탄 피드와 경질 탄화수소 피드를 분리하는 피드 분리부; 상기 피드 분리부로부터 상기 경질 탄화수소 피드를 공급받아 에탄 크래킹 공정을 수행하여 올레핀 생성물을 제조하는 에탄 크래킹부; 상기 피드 분리부로부터 상기 메탄 피드를 공급받아 플라즈마 반응을 통해 포화 탄화수소 피드 및 불포화 탄화수소 피드를 생성하는 유전체 장벽 반응부; 및 상기 불포화 탄화수소 피드 중 적어도 일부를 수소화하여 올레핀 생성물을 제조하는 수소화부를 포함하는, 올레핀 제조 반응 장치가 제공된다.

Olefin production reactor and production process using direct conversion of methane

According to one embodiment of the present invention, provided is an olefin production reactor comprising: a feed separation part for separating a methane feed and a light hydrocarbon feed from supplied hydrocarbon feed; an ethane cracking part for receiving the light hydrocarbon feed from the feed separation part and performing an ethane cracking process to produce an olefin product; a dielectric barrier reaction part for receiving the methane feed from the feed separation part and generating a saturated hydrocarbon feed and an unsaturated hydrocarbon feed through a plasma reaction; and a hydrogenation part for producing an olefin product by hydrogenating at least a portion of the unsaturated hydrocarbon feed.

Extraction process for removal of impurities from mother liquor in the synthesis of carboxylic acid

A method for removing impurities from a mother liquor comprising a carboxylic acid, a metal catalyst, impurities by (a) evaporating the mother liquor comprising a carboxylic acid, a metal catalyst, impurities and a solvent in a first evaporator zone to produce a vapor stream and a concentrated mother liquor stream;(b) evaporating the concentrated mother liquor stream in a second evaporator zone to form a solvent rich stream and a super concentrated mother liquor stream; (c) mixing in a mixing zone a water-solvent solution and optionally an extraction solvent with the super concentrated mother liquor stream to form an aqueous mixture;(d) optionally separating organic impurities from the aqueous mixture in a solid-liquid separation zone to form a purified aqueous mixture; and (e) extracting the aqueous mixture or purified aqueous mixture with an extraction solvent in an extraction zone to form an extract stream and the raffinate stream.

Method for recycling magnesium alkylation reaction catalyst

本发明提供一种镁系烷基化反应催化剂循环再生的方法，涉及工业废渣资源化利用的技术领域。该镁系烷基化反应催化剂循环再生的方法，具体操作如下：将废氧化镁催化剂干燥、粉碎，将粉碎后的废氧化镁催化剂进行焙烧，去除积碳，加入去离子水中，恒温搅拌为浆料，浆料在高速搅拌下通入适量的二氧化碳，然后过滤得到滤饼，滤饼干燥后的粉状固体作为前驱体，再加入铜、石墨等助剂，造粒、压片即可得到再生催化剂。本发明能有效回收利用使用后的废氧化镁催化剂，变废为宝；采用二氧化碳对镁化合物进行结构变换，省去了酸和碱的消耗，进而避免了含盐废水的处理；该方法工艺简单，全过程中有害物质得到有效控制，具有较高的环境和经济价值。

Extraction process for removal of impurities from mother liquor in the synthesis of carboxylic acid

A method for removing impurities from a mother liquor comprising a carboxylic acid, a metal catalyst, impurities by (a) evaporating the mother liquor comprising a carboxylic acid, a metal catalyst, impurities and a solvent in a first evaporator zone to produce a vapor stream and a concentrated mother liquor stream;(b) evaporating the concentrated mother liquor stream in a second evaporator zone to form a solvent rich stream and a super concentrated mother liquor stream; (c) mixing in a mixing zone a water solvent solution and optionally an extraction solvent with the super concentrated mother liquor stream to form an aqueous mixture;(d) optionally separating organic impurities from the aqueous mixture in a solid-liquid separation zone to form a purified aqueous mixture; and (e) extracting the aqueous mixture or purified aqueous mixture with an extraction solvent in an extraction zone to form an extract stream and the raffinate stream.

Regenerated hydrocracking catalyst and method for producing a hydrocarbon oil

This regenerated hydrocracking catalyst is formed by regenerating a used hydrocracking catalyst which contains both a carrier containing zeolite and an amorphous composite metal oxide having solid acidity, and at least one type of active metal selected from the noble metals of group 8 to group 10 of the periodic table and supported on the aforementioned carrier; relative to the total mass of the catalyst, this regenerated hydrocracking catalyst contains 0.05-1 mass% of a carbonaceous material in terms of carbon atoms.

Hydroprocessing process with improved catalyst activity

This invention relates to a hydroprocessing process with improved catalyst activity when hydroprocessing petroleum based feedstock or an oxygen containing feedstock. This invention also relates to a hydrotreating process with improved hydrodesulfurization (HDS) activity of a hydrotreating catalyst such as Co/Mo by co-feeding carbon monoxide or its precursors. Such inventive process confirms that adding a small amount of CO to H2 in a hydrotreater for a few days leads to an increase in product sulfur due to the inhibition of CO on the hydrotreating catalyst such as CO/Mo. However, it has been unexpectedly found that after the CO was removed from the hydrogen stream, product sulfur levels decreased to values below they were before CO addition which means the activity of the hydrotreating catalyst increased after the CO treatment.

Methane oxidation catalyst regeneration device and regeneration method

본 발명은 메탄을 산화시키는 메탄산화촉매의 재생장치 및 그 방법에 관한 것으로, 특히 메탄산화촉매가 장착된 반응기를 폐쇄한 상태에서 재생가스를 반응기에 주입하여 메탄산화촉매에 형성된 PdO를 환원시킴에 있어 반응기 내부의 전체 메탄산화촉매를 재생하거나 또는 일부 메탄산화촉매를 선택하여 재생할 수 있게 구성한 것이다. 상기와 같은 목적을 달성하기 위한 본 발명에 따른 메탄산화촉매 재생장치는 메탄산화촉매가 장착된 반응기와, 반응기로 재생가스를 공급하는 재생가스 공급라인과, 재생가스 공급라인에서 분기되어 반응기 내부의 메탄산화촉매의 상류 측으로 연장되며 메탄산화촉매를 향해 재생가스를 분사하는 재생가스 분기관을 포함하며, 재생가스 분기관에서 분사된 재생가스는 메탄산화촉매에 형성된 PdO를 환원시키는 것을 기술적 특징으로 하며, 메탄산화촉매 재생방법은 메탄산화촉매가 장착된 반응기를 폐쇄하는 단계와, 메탄산화촉매의 상류 쪽에 재생가스를 주입하여 PdO를 환원하는 단계를 포함하는 것을 기술적 특징으로 한다.

Process for purifying and regenerating molecular sieves used for styrene treatment

Process for cleaning and process for regenerating molecular sieve which has been placed in contact with styrene. The molecular sieve must be rinsed with an appropriate solvent, preferably ethylbenzene, and then subjected to a heat treatment.

Method and apparatus for regenerating NOx adsorbers

In a method of regenerating a NOx adsorber, the NOx adsorber is used to treat exhaust gases created during the combustion of gaseous fuels in general. Methane is introduced into a reformer or exhaust line in which hydrogen generated during reforming is used to regenerate the NOx absorber.