SU943219A1 - Process for purifying ethylene from propylene - Google Patents

Process for purifying ethylene from propylene Download PDF

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Publication number
SU943219A1
SU943219A1 SU802898696A SU2898696A SU943219A1 SU 943219 A1 SU943219 A1 SU 943219A1 SU 802898696 A SU802898696 A SU 802898696A SU 2898696 A SU2898696 A SU 2898696A SU 943219 A1 SU943219 A1 SU 943219A1
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SU
USSR - Soviet Union
Prior art keywords
propylene
catalyst
ethylene
purification
hydrogen chloride
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Application number
SU802898696A
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Russian (ru)
Inventor
Юсиф Нифтали Оглы Кафаров
Нателла Эйюбовна Джаббарова
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за вите ли
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Priority to SU802898696A priority Critical patent/SU943219A1/en
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Publication of SU943219A1 publication Critical patent/SU943219A1/en

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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Catalysts (AREA)

Description

Изобретение относитс  к очистке этилена от пропилена.This invention relates to the purification of ethylene from propylene.

Известен способ химической очистки этилена от пропилена путем адсорбции серной кислотой 1.A known method of chemical purification of ethylene from propylene by adsorption with sulfuric acid 1.

Недостатком этого способа  вл етс  необходймость утилизации серной кислоты с целью возвращени  ее в дикл, что усложн ет процесс.The disadvantage of this method is the need for utilization of sulfuric acid in order to return it to the cyclone, which complicates the process.

Наиболее близким к предлагаемому по технической сущности  вл етс  способ очистки этилена от пропилена путем пропускани  в присутствии хлористого водорода через раствор катализатора - кислот Льюиса/ например хлористого алюмини  или железа - и органическом растворителе, например изопропилхлориде, при 21.The closest to the proposed technical essence is the method of purification of ethylene from propylene by passing in the presence of hydrogen chloride through a solution of a catalyst — Lewis acids / for example aluminum chloride or iron — and an organic solvent, for example isopropyl chloride, at 21.

Недостатком указанного способа  вл етс  сложность процесса, св занна  с осуществлением жидкофазного гетерогенного процесса, необходимость регенерации катализатора из раствора, загр знение продукта растворителем и хлористым водородом, которые необходимо улавливать. Способ позвол ет достичь степени очистки этилена от пропилена в зависимости от условий 99 2-100%.The disadvantage of this method is the complexity of the process associated with the implementation of a liquid-phase heterogeneous process, the need to regenerate the catalyst from solution, contamination of the product with solvent and hydrogen chloride, which must be captured. The method allows to achieve the degree of purification of ethylene from propylene, depending on the conditions of 99 2-100%.

Цель изобретени  - упрощение технологии процесса.The purpose of the invention is to simplify the process technology.

Поставленна  цель достигаетс  путем обработки хлористым водородом в присутствии катализатора - 1,22 ,2 вес.% хромовой кислоты на силикагеле при времени контакта 5,950 с и 60-150.This goal is achieved by treating with hydrogen chloride in the presence of a catalyst — 1.22, 2 wt.% Chromic acid on silica gel with contact times of 5.950 s and 60-150.

Катализатор готов т путем пропит10 ки силикагел  марки КСС, КСК или ШСМ водным раствором хромовой кислоты и высушиванием на воздухе при 100-120 С в Течение 1,5-2 ч. Снижение концентрации кислоты в катализаторе менее 1,2 вес.% приводит к уменьшению активности-катализатора в реакции гидрохлорировани  пропи лена. При содержании кислоты в катализаторе более 2,2 вес,%. наблкща20 етс  протекание побочных .реакций, кроме того, происходит унос кислоты с поверхности катализатора, vThe catalyst is prepared by impregnating silica gel KSS, KSK or ShSM with an aqueous solution of chromic acid and drying it in air at 100-120 ° C for 1.5-2 hours. A decrease in the acid concentration in the catalyst less than 1.2 wt.% Leads to a decrease catalyst activity in the propylene hydrochlorination reaction. When the content of acid in the catalyst is more than 2.2 wt.%. side reactions also occur; in addition, acid is carried off from the catalyst surface, v

Пример. Процесс осуществл ют в реакторе проточного т па ( длина 110 M-I, диаметр 30 мм) при атмосферном давлении. Сырье - смесь этилена и пропилена и хлористый водород подают- в-смеситель, а затем в реактор , газообразна  смесь, выход ща Example. The process is carried out in a flow reactor (length 110 M-I, diameter 30 mm) at atmospheric pressure. Raw materials - a mixture of ethylene and propylene and hydrogen chloride are fed into the mixer, and then into the reactor, the gaseous mixture leaving

30 изjjDeaKTOpa, поступает на улавлива30 of jjDeaKTOpa, enters the catch

Claims (1)

Формула изобретенияClaim Способ очистки этилена от пропилена путем обработки хлористым водородом при повышенной температуре в присутствии катализатора, о т л ичающийся тем, что, с целью упрощения технологии процесса, обработку осуществляют с использованием в качестве катализатора 1,2-2,2 вес.% хромовой кислоты на силикагеле при времени контакта 5,9-50 с и 60-150°С.The method of purification of ethylene from propylene by treatment with hydrogen chloride at elevated temperature in the presence of a catalyst, which consists in the fact that, in order to simplify the process technology, the treatment is carried out using 1.2-2.2 wt.% Chromic acid as a catalyst silica gel with a contact time of 5.9-50 s and 60-150 ° C.
SU802898696A 1980-02-12 1980-02-12 Process for purifying ethylene from propylene SU943219A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU802898696A SU943219A1 (en) 1980-02-12 1980-02-12 Process for purifying ethylene from propylene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU802898696A SU943219A1 (en) 1980-02-12 1980-02-12 Process for purifying ethylene from propylene

Publications (1)

Publication Number Publication Date
SU943219A1 true SU943219A1 (en) 1982-07-15

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Family Applications (1)

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SU802898696A SU943219A1 (en) 1980-02-12 1980-02-12 Process for purifying ethylene from propylene

Country Status (1)

Country Link
SU (1) SU943219A1 (en)

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