JPS55115841A - Treatment of by-product in preparation of acetaldehyde - Google Patents
Treatment of by-product in preparation of acetaldehydeInfo
- Publication number
- JPS55115841A JPS55115841A JP2398279A JP2398279A JPS55115841A JP S55115841 A JPS55115841 A JP S55115841A JP 2398279 A JP2398279 A JP 2398279A JP 2398279 A JP2398279 A JP 2398279A JP S55115841 A JPS55115841 A JP S55115841A
- Authority
- JP
- Japan
- Prior art keywords
- fed
- acetaldehyde
- column
- distillation column
- bottoms
- 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.)
- Granted
Links
Abstract
PURPOSE: To recover acetaldehyde (X) and to incinerate bottoms conc. aqueous X, by rectifying crude hydrous K, by removing most of water from the side stream taken of a concentration distillation column, and by feeding the distillate to a recovery distillation column.
CONSTITUTION: Crude hydrous acetaldehyde, obtained by the Hoechst process, is fed to the rectifying column A, and chloroacetaldehyde (Y) containing a given concentration of acetaldehyde (X) is taken out as a side stream, which is fed to the concentration distillation column B. Most of water is then removed from the bottom, and substantially the total amount of X in the side stream and most of Y are distilled overhead, and fed to the recovery distillation column C. The high- purity X is obtained from the top, and the conc. aqueous Y is taken out of the column as bottoms, which are fed to the incineration system. A partial condenser is provided between the columns B and C to separate the bottoms into the vapor phase rich in X and the condensate rich in Y. The vapor phase is fed to the column C to reduce the load on distillation.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2398279A JPS5822133B2 (en) | 1979-03-01 | 1979-03-01 | Method for treating by-products of acetaldehyde production |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2398279A JPS5822133B2 (en) | 1979-03-01 | 1979-03-01 | Method for treating by-products of acetaldehyde production |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55115841A true JPS55115841A (en) | 1980-09-06 |
JPS5822133B2 JPS5822133B2 (en) | 1983-05-06 |
Family
ID=12125763
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2398279A Expired JPS5822133B2 (en) | 1979-03-01 | 1979-03-01 | Method for treating by-products of acetaldehyde production |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5822133B2 (en) |
-
1979
- 1979-03-01 JP JP2398279A patent/JPS5822133B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5822133B2 (en) | 1983-05-06 |
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