JPS57120532A - Preparation of high-purity butadiene - Google Patents
Preparation of high-purity butadieneInfo
- 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
Links
Landscapes
- 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
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) |
-
1981
- 1981-01-21 JP JP748481A patent/JPS57120532A/en active Pending
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