JPS5651431A - Preparation of 2-ethylhexenal - Google Patents
Preparation of 2-ethylhexenalInfo
- Publication number
- JPS5651431A JPS5651431A JP12816579A JP12816579A JPS5651431A JP S5651431 A JPS5651431 A JP S5651431A JP 12816579 A JP12816579 A JP 12816579A JP 12816579 A JP12816579 A JP 12816579A JP S5651431 A JPS5651431 A JP S5651431A
- Authority
- JP
- Japan
- Prior art keywords
- distillation column
- column
- distillation
- fed
- water
- 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 enable the stable and continuous distillation separation of unreacted raw materials in the preparation of 2-ethylhexenal, and to recover the unreacted raw materials easily, by maintaining the water-content of the bottom liquid of the distillation column above a specific level, thereby keeping the temperature of the bottom at a low level.
CONSTITUTION: The reaction product obtained by the dehydration condensation of n-butylaldehyde in the reactors A and B is separated into oil and water, and the oil layer is fed to the first distillation column D. The distillation is performed keeping the water-content in the bottom liquid at ≥2wt% (esp. 2W5wt%), and a mixture containing unreacted n-butylaldehyde is distilled out from the top of the column. At least a part of the distillate is recycled to the dehydration condensation stage. The bottom liquid of the distillation column D is fed to the second distillation column G, and distilled under a pressure of 50W300mmHg to obtain the titled material from the top, and the liquid containing high-boiling components in high concentration from the bottom of the column. If necessary, the bottom is fed to the third distillation column J, and distilled under a pressure of 10W100mmHg to recover the remaining objective compound from the top.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12816579A JPS5822134B2 (en) | 1979-10-04 | 1979-10-04 | Method for producing 2-ethylhexenal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12816579A JPS5822134B2 (en) | 1979-10-04 | 1979-10-04 | Method for producing 2-ethylhexenal |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5651431A true JPS5651431A (en) | 1981-05-09 |
JPS5822134B2 JPS5822134B2 (en) | 1983-05-06 |
Family
ID=14977993
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12816579A Expired JPS5822134B2 (en) | 1979-10-04 | 1979-10-04 | Method for producing 2-ethylhexenal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5822134B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0519059Y2 (en) * | 1988-10-05 | 1993-05-20 |
-
1979
- 1979-10-04 JP JP12816579A patent/JPS5822134B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5822134B2 (en) | 1983-05-06 |
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