RU97113086A - METHOD FOR PRODUCING PURE HYDROCARBONS FROM A MIXTURE CONTAINING AROMATIC AND NON-AROMATIC HYDROCARBONS - Google Patents

METHOD FOR PRODUCING PURE HYDROCARBONS FROM A MIXTURE CONTAINING AROMATIC AND NON-AROMATIC HYDROCARBONS

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Publication number
RU97113086A
RU97113086A RU97113086/04A RU97113086A RU97113086A RU 97113086 A RU97113086 A RU 97113086A RU 97113086/04 A RU97113086/04 A RU 97113086/04A RU 97113086 A RU97113086 A RU 97113086A RU 97113086 A RU97113086 A RU 97113086A
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RU
Russia
Prior art keywords
solvent
distillation column
extractive distillation
hydrocarbons
aromatic hydrocarbons
Prior art date
Application number
RU97113086/04A
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Russian (ru)
Other versions
RU2138472C1 (en
Inventor
Доннермейер Штефан
Лудольф Юрген
Фоллмер Ханс-Юрген
Original Assignee
Крупп Уде ГмбХ
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Filing date
Publication date
Priority claimed from DE19630771A external-priority patent/DE19630771C1/en
Application filed by Крупп Уде ГмбХ filed Critical Крупп Уде ГмбХ
Publication of RU97113086A publication Critical patent/RU97113086A/en
Application granted granted Critical
Publication of RU2138472C1 publication Critical patent/RU2138472C1/en

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Claims (7)

1. Способ получения чистых углеводородов из смеси, содержащей ароматические и неароматические углеводороды, в особенности из смеси углеводородов, обогащенной ароматическими углеводородами, путем экстрактивной дистилляции в экстрактивной дистилляционной колонне, при этом в верхнюю части колонны через первый ввод для растворителя в экстрактивную дистилляционную колонну подают второй поток части селективного растворителя, причем по меньшей мере N-замещенный морфолин используют в качестве селективного растворителя, и при этом в основном из головной части экстрактивной дистилляционной колонны в качестве продукта рафинирования выводят в основном неароматические углеводороды, а из нижней части экстрактивной дистилляционной колонны в качестве экстракта выводят в основном ароматические углеводороды и селективный растворитель, отличающийся тем, что в верхней части колонны выше первого ввода для растворителя в экстрактивную дистилляционную колонну подают через второй ввод для растворителя второй поток части селективного растворителя, при этом количество растворителя поданное вместе с вторым частичным потоком, составляет меньше 50% от общего количества растворителя, поданного вместе с первым и вторым частичными потоками.1. A method for producing pure hydrocarbons from a mixture containing aromatic and non-aromatic hydrocarbons, in particular from a mixture of hydrocarbons enriched in aromatic hydrocarbons, by extractive distillation in an extractive distillation column, wherein a second solvent is fed into the extractive distillation column through the first solvent inlet to the extractive distillation column a stream of a portion of a selective solvent, wherein at least the N-substituted morpholine is used as a selective solvent, and mainly mainly non-aromatic hydrocarbons are removed from the head of the extractive distillation column as a refining product, and mainly aromatic hydrocarbons and a selective solvent are removed from the bottom of the extractive distillation column as an extract, characterized in that in the upper part of the column above the first solvent input the extractive distillation column is fed through a second solvent inlet to a second stream of a portion of the selective solvent, wherein the amount of solvent filed with the second partial stream, is less than 50% of the total amount of solvent filed with the first and second partial streams. 2. Способ по п. 1, отличающийся тем, что используют обогащенную ароматическими углеводородами смесь углеводородов с содержанием ароматических углеводородов выше 85%. 2. The method according to p. 1, characterized in that they use a mixture of hydrocarbons enriched in aromatic hydrocarbons with an aromatic hydrocarbon content above 85%. 3. Способ по одному из п. 1 или 2, отличающийся тем, что в качестве селективного растворителя используют N-замещенный морфолин с не более чем 7 атомами углерода в заместителе. 3. The method according to one of p. 1 or 2, characterized in that as a selective solvent using N-substituted morpholine with no more than 7 carbon atoms in the substituent. 4. Способ по одному из пп. 1-3, отличающийся тем, что в качестве селективного растворителя используют N-формилморфолин. 4. The method according to one of paragraphs. 1-3, characterized in that as a selective solvent using N-formylmorpholine. 5. Способ по одному из пп. 1-4, отличающийся тем, что экстракт из ароматических углеводородов и селективного растворителя, выделенный из нижней части экстрактивной дистилляционной колонны, подают в отгонную колонну, в которой ароматические углеводороды отделяют от селективного растворителя. 5. The method according to one of paragraphs. 1-4, characterized in that the extract from aromatic hydrocarbons and a selective solvent isolated from the bottom of the extractive distillation column is fed to a distillation column in which aromatic hydrocarbons are separated from the selective solvent. 6. Способ по одному из пп. 1-5, отличающийся тем, что селективный растворитель, выделенный из нижней части экстрактивной дистилляционной колонны, подают в циркуляционный контур и через вводы для растворителя вновь возвращают в экстрактивную дистилляционную колонну. 6. The method according to one of paragraphs. 1-5, characterized in that the selective solvent isolated from the bottom of the extractive distillation column is fed into the circulation circuit and again through the solvent inlets is returned to the extractive distillation column. 7. Способ по одному из пп.1-6, отличающийся тем, что количество растворителя, подаваемое с вторым частичным потоком, составляет 0,5-10% от общего количества растворителя, подаваемого вместе с первым и вторым частичными потоками. 7. The method according to one of claims 1 to 6, characterized in that the amount of solvent supplied with the second partial stream is 0.5-10% of the total amount of solvent supplied with the first and second partial streams.
RU97113086A 1996-07-31 1997-07-30 Method of producing pure hydrocarbons from mixture containing aromatic and nonaromatic hydrocarbons RU2138472C1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19630771.6 1996-07-31
DE19630771A DE19630771C1 (en) 1996-07-31 1996-07-31 Process for the production of pure hydrocarbons from an aromatic and non-aromatic hydrocarbon mixture

Publications (2)

Publication Number Publication Date
RU97113086A true RU97113086A (en) 1999-05-27
RU2138472C1 RU2138472C1 (en) 1999-09-27

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Country Status (12)

Country Link
US (1) US6007707A (en)
EP (1) EP0822245B1 (en)
JP (1) JPH1088151A (en)
KR (1) KR980009212A (en)
CN (1) CN1175568A (en)
AT (1) ATE208807T1 (en)
CA (1) CA2210980A1 (en)
CZ (1) CZ242797A3 (en)
DE (2) DE19630771C1 (en)
PL (1) PL320726A1 (en)
RU (1) RU2138472C1 (en)
ZA (1) ZA975556B (en)

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CN1083819C (en) * 1999-06-11 2002-05-01 中国石油化工集团公司 Method for separating arene by using extraction and rectification
US6358402B1 (en) * 1999-12-28 2002-03-19 Exxonmobil Research And Engineering Company Extractive distillation process for the reduction of sulfur species in hydrocarbons streams
DE10144239A1 (en) * 2001-09-04 2003-03-27 Bp Koeln Gmbh Process for the process control of an extractive distillation plant, process control system and extractive distillation plant
CN101091835B (en) * 2006-06-22 2010-05-12 中国石油化工股份有限公司 Extractive distillation method with heat exchange through parallel connection
CN101941877B (en) * 2009-06-02 2015-11-25 环球油品公司 For removing the method and apparatus of pollutent from selective aromatics solvent
US8460517B2 (en) * 2009-09-02 2013-06-11 Gtc Technology Us Llc Methods and apparatuses for steam addition to a reboiler coupled to an extractive distillation column for improved extractive distillation
US8246815B2 (en) * 2010-08-10 2012-08-21 Amt International Inc. Methods for regeneration of solvents for extractive processes
US9005405B2 (en) * 2012-03-01 2015-04-14 Cpc Corporation, Taiwan Extractive distillation process for benzene recovery
CN103232317A (en) * 2013-04-05 2013-08-07 大连理工大学 Aromatic hydrocarbon purification apparatus and process used in hydrofining of coking crude benzene
JP6938519B2 (en) * 2016-02-05 2021-09-22 ビーエイエスエフ・ソシエタス・エウロパエアBasf Se Material separation method by extraction distillation method
US20240109824A1 (en) * 2022-09-30 2024-04-04 Uop Llc Processes and apparatuses for separating aromatic and non-aromatic hydrocarbons

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US2376870A (en) * 1941-03-28 1945-05-29 Allied Chem & Dye Corp Azeotropic distillation of hydro-carbon oils
US3259555A (en) * 1962-04-13 1966-07-05 Du Pont Stripping monomers from solutions of polymers
DE1543104C3 (en) * 1965-03-04 1974-03-21 Heinrich Koppers Gmbh, 4300 Essen Process for the separation of pure aromatics from mixtures of aromatics with non-aromatics with the aid of extractive distillation
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DE1808758C3 (en) * 1968-11-14 1974-10-17 Metallgesellschaft Ag, 6000 Frankfurt Process for the separation of pure aromatic hydrocarbons from hydrocarbon mixtures !!
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DE4040145A1 (en) * 1990-12-15 1992-06-17 Krupp Koppers Gmbh METHOD FOR SEPARATING AROMATES FROM HYDROCARBON MIXTURES OF ANY AROMATE CONTENT
DE4109632A1 (en) * 1991-03-23 1992-09-24 Krupp Koppers Gmbh METHOD FOR SEPARATING AROMATES BY EXTRACTIVE DISTILLATION

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