JPS57108029A - Preparation of 1,4-butanediol and tetrahydrofuran - Google Patents
Preparation of 1,4-butanediol and tetrahydrofuranInfo
- Publication number
- JPS57108029A JPS57108029A JP18428780A JP18428780A JPS57108029A JP S57108029 A JPS57108029 A JP S57108029A JP 18428780 A JP18428780 A JP 18428780A JP 18428780 A JP18428780 A JP 18428780A JP S57108029 A JPS57108029 A JP S57108029A
- Authority
- JP
- Japan
- Prior art keywords
- reactor
- distilling column
- thf
- butanediol
- fed
- 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
- Furan Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To obtain the titled substances advantageously, by reacting acetic ester of 1,4-butanediol with water, decomposing high-boiling substances formed as a by-product into tetrahydrofuran (THF), treating the deactylated and cyclized reaction product with the THF, and circulating the remaining high-boiling substances through the hydrolyzing step.
CONSTITUTION: Acetic ester of 1,4-butanediol and water are fed from pipes 1 and 2 to the first reactor (A), and a high-boilihg circulating solution is introduced from a pipe 14 into the first reactor (A) to carry out the reaction. Water and acetic acid are removed in the first distilling column (C), and a distillate containing the unreacted ester, partial hydrolyzate and butanediol partially is fed from the top of the second distilling column (D) to an isomeric separating column (E) and then led to the second reactor (G). The bottoms from the second distilling column (D) are separated into a diol (pipe 10) and high-boiling substances in the third distilling column (F). The resultant high-boiling substances are decomposed into tetrahydrofuran (THF) in a high-boiling decomposing reactor (J), and the THF and the reaction product from the second reactor (G) are fed to the fourth distilling column (H) to give the TFH from the top of the fifth distilling column (I).
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18428780A JPS57108029A (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 |
|---|---|---|---|
| JP18428780A JPS57108029A (en) | 1980-12-25 | 1980-12-25 | Preparation of 1,4-butanediol and tetrahydrofuran |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57108029A true JPS57108029A (en) | 1982-07-05 |
Family
ID=16150679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18428780A Pending JPS57108029A (en) | 1980-12-25 | 1980-12-25 | Preparation of 1,4-butanediol and tetrahydrofuran |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57108029A (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 JP18428780A patent/JPS57108029A/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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