JPS54141789A - Recovery of pyrimidine - Google Patents
Recovery of pyrimidineInfo
- Publication number
- JPS54141789A JPS54141789A JP4879378A JP4879378A JPS54141789A JP S54141789 A JPS54141789 A JP S54141789A JP 4879378 A JP4879378 A JP 4879378A JP 4879378 A JP4879378 A JP 4879378A JP S54141789 A JPS54141789 A JP S54141789A
- Authority
- JP
- Japan
- Prior art keywords
- pyrimidine
- high concentration
- aqueous solution
- recover
- distilled
- 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
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
PURPOSE: To recover pyrimidine useful as an intermediate for the synthesis of drugs as an azeotripic mixture with water in a high concentration, by distilling an aqueous effluent containing a small amount of pyrimidine discharged from a process of preparing acrylonitrile from propylene.
CONSTITUTION: An aqueous solution containing 5000 ppm or less of pyrimidine is distilled to recover a cut boiling at 98W99°C under normal pressure as an azeotropic mixture with water, thus giving pyrimidine in a high concentration. An aqueous effluent from gas phase catalytic oxidation of propylene with ammonia may be cited as the aqueous solution. To prevent the pyrimidine loss, the cut boiling at 90W 99.8°C is collected, and, if necessary, distilled. Pyrimidine is obtained with a high concentration by separating an aqueous solution containing 1.5% or more of pyrimidine with a solid alkali metal hydroxide to separate into two layers, from which the upper layer is separated.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4879378A JPS54141789A (en) | 1978-04-26 | 1978-04-26 | Recovery of pyrimidine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4879378A JPS54141789A (en) | 1978-04-26 | 1978-04-26 | Recovery of pyrimidine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54141789A true JPS54141789A (en) | 1979-11-05 |
Family
ID=12813101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4879378A Pending JPS54141789A (en) | 1978-04-26 | 1978-04-26 | Recovery of pyrimidine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54141789A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583867A (en) * | 2012-03-20 | 2012-07-18 | 石家庄杰克化工有限公司 | Method for treating waste water in chloro pyrimidine combining process |
| CN109761423A (en) * | 2019-01-24 | 2019-05-17 | 安徽广信农化股份有限公司 | A kind of process for treating waste liquor synthesizing Fluoxastrobin |
-
1978
- 1978-04-26 JP JP4879378A patent/JPS54141789A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583867A (en) * | 2012-03-20 | 2012-07-18 | 石家庄杰克化工有限公司 | Method for treating waste water in chloro pyrimidine combining process |
| CN109761423A (en) * | 2019-01-24 | 2019-05-17 | 安徽广信农化股份有限公司 | A kind of process for treating waste liquor synthesizing Fluoxastrobin |
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