JPS57108030A - Preparation of 1,4-butanediol and tetrahydrofuran - Google Patents
Preparation of 1,4-butanediol and tetrahydrofuranInfo
- Publication number
- JPS57108030A JPS57108030A JP18428880A JP18428880A JPS57108030A JP S57108030 A JPS57108030 A JP S57108030A JP 18428880 A JP18428880 A JP 18428880A JP 18428880 A JP18428880 A JP 18428880A JP S57108030 A JPS57108030 A JP S57108030A
- Authority
- JP
- Japan
- Prior art keywords
- raw material
- distilling column
- butanediol
- fed
- distilling
- 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
Abstract
PURPOSE: To obtain the titled compounds efficiently with suppressed new formation of high boiling substances in preparing the titled two compounds from acetic ester of 1,4- butanediol simultaneously, by circulating the high-boiling substances with the unreacted reaction raw material through the reaction zone.
CONSTITUTION: Acetic ester of 1,4-butanediol (a raw material), water and the circulating solution from the fourth distilling column (H) are fed to the first reaction zone (A) consisting of a solid acid catalyst and reacted. The reaction product is then fed to the firstWthe third distilling columns (C), (D) and (F) one after another to distill off the water and acetic acid in the first distilling column (C), the unreacted reaction raw material in the second distilling column (D) and 1,4-butanediol in the third distilling column (F) (high-boiling separating column) respectively. The bottoms (high-boiling substances) of the third distilling column (F) in an amount of 1.0W50wt% based on the total concentration are added to the distillate (unreacted reaction raw material) from the second distilling column (D), and the resultant mixture is then fed to the second reaction zone (G) and reacted in the presence of a solid acid catalyst. The reaction product is then fed to the fourth distilling column (H) to separate tetrahydrofuran from the distillate, and the bottoms (the unreacted reaction raw material and high-boiling substances) are circulated through the first reaction zone (A).
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18428880A JPS57108030A (en) | 1980-12-25 | 1980-12-25 | Preparation of 1,4-butanediol and tetrahydrofuran |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18428880A JPS57108030A (en) | 1980-12-25 | 1980-12-25 | Preparation of 1,4-butanediol and tetrahydrofuran |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57108030A true JPS57108030A (en) | 1982-07-05 |
Family
ID=16150695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18428880A Pending JPS57108030A (en) | 1980-12-25 | 1980-12-25 | Preparation of 1,4-butanediol and tetrahydrofuran |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57108030A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4665205A (en) * | 1984-08-01 | 1987-05-12 | Idemitsu Petrochemical Co., Ltd. | Process for preparing tetrahydrofuran |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5432409A (en) * | 1977-08-03 | 1979-03-09 | Mitsubishi Chem Ind Ltd | Preparation of ciol and cyclic ether |
-
1980
- 1980-12-25 JP JP18428880A patent/JPS57108030A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5432409A (en) * | 1977-08-03 | 1979-03-09 | Mitsubishi Chem Ind Ltd | Preparation of ciol and cyclic ether |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4665205A (en) * | 1984-08-01 | 1987-05-12 | Idemitsu Petrochemical Co., Ltd. | Process for preparing tetrahydrofuran |
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