JPS57120532A - Preparation of high-purity butadiene - Google Patents

Preparation of high-purity butadiene

Info

Publication number
JPS57120532A
JPS57120532A JP748481A JP748481A JPS57120532A JP S57120532 A JPS57120532 A JP S57120532A JP 748481 A JP748481 A JP 748481A JP 748481 A JP748481 A JP 748481A JP S57120532 A JPS57120532 A JP S57120532A
Authority
JP
Japan
Prior art keywords
mixture
hydrocarbons
phosphate
butadiene
extractive distillation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP748481A
Other languages
Japanese (ja)
Inventor
Takashi Kiyota
Sunao Omori
Katsuhiko Ishikawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eneos Corp
Original Assignee
Nippon Oil Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Oil Corp filed Critical Nippon Oil Corp
Priority to JP748481A priority Critical patent/JPS57120532A/en
Publication of JPS57120532A publication Critical patent/JPS57120532A/en
Pending legal-status Critical Current

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

Abstract

PURPOSE: To obtain high-purity butadiene from a mixture of 4C hydrocarbons, by using a solvent consisting of a phosphate compound such as trimethyl phosphate, dimethyl phosphate, or its mixture as a main component through extractive distillation.
CONSTITUTION: A mixture of 4C hydrocarbons obtained by decomposing thermally petroleums or dehydrogenating butane-butenes, preferably a mixture of 4C hydrocarbons, obtained by hydrogenating the mixture of 4C hydrocarbons in the presence of a catalyst in a liquid or vapor phase so that acetylenes are hydrogenated selectively to make an acetylene content of ≤1,000ppm based on butadiene, is preferably subjected to the first step extractive distillation operation using a selective solvent consisting essentially of a phosphate compound (e.g., triethyl phosphate, etc.) to remove paraffins and olefins, and subjected to the second step extractive distillation operation to remove acetylenes. Consequently, high-purity butadiene is obtained.
COPYRIGHT: (C)1982,JPO&Japio
JP748481A 1981-01-21 1981-01-21 Preparation of high-purity butadiene Pending JPS57120532A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP748481A JPS57120532A (en) 1981-01-21 1981-01-21 Preparation of high-purity butadiene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP748481A JPS57120532A (en) 1981-01-21 1981-01-21 Preparation of high-purity butadiene

Publications (1)

Publication Number Publication Date
JPS57120532A true JPS57120532A (en) 1982-07-27

Family

ID=11667034

Family Applications (1)

Application Number Title Priority Date Filing Date
JP748481A Pending JPS57120532A (en) 1981-01-21 1981-01-21 Preparation of high-purity butadiene

Country Status (1)

Country Link
JP (1) JPS57120532A (en)

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