JPS5742677A - Preparation of cyanuric acid - Google Patents
Preparation of cyanuric acidInfo
- Publication number
- JPS5742677A JPS5742677A JP12023880A JP12023880A JPS5742677A JP S5742677 A JPS5742677 A JP S5742677A JP 12023880 A JP12023880 A JP 12023880A JP 12023880 A JP12023880 A JP 12023880A JP S5742677 A JPS5742677 A JP S5742677A
- Authority
- JP
- Japan
- Prior art keywords
- reactor
- cyanuric acid
- urea
- crude cyanuric
- content
- 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 prepare crude cyanuric acid, continuously, in high efficiency, by feed ing the reactor with a specific amount of molten urea divided in several times through a plurality of urea feeding holes attached to the reactor at definite intervals along the moving direction of the content, and recycling a part of the crude cyanuric acid to the reactor.
CONSTITUTION: In the preparation of cyanuric acid by the thermal decomposition of urea in an externally heated reactor equipped with a stirring rod, molten urea is fed to the reactor dividedly through a plurality of urea feeding holes attached to the reactor with regular spacings corresponding to 2W20min residence time of the content, and thermally decomposed at 230W320°C to obtain crude cyanuric acid, a part of which is recycled to the reactor. The amount of urea fed through each feeding hole is about ≤1/3pt.wt./1pt.wt. of the crude cyanuric acid existing in the content at the position of the feeding hole, and the total amount of the urea fed to the reactor is >1/3pt.wt./1pt.wt. of the crude cyanuric acid recycled to the reactor.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55120238A JPS5936985B2 (en) | 1980-08-29 | 1980-08-29 | Production method of cyanuric acid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55120238A JPS5936985B2 (en) | 1980-08-29 | 1980-08-29 | Production method of cyanuric acid |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5742677A true JPS5742677A (en) | 1982-03-10 |
JPS5936985B2 JPS5936985B2 (en) | 1984-09-06 |
Family
ID=14781254
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55120238A Expired JPS5936985B2 (en) | 1980-08-29 | 1980-08-29 | Production method of cyanuric acid |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5936985B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115025720A (en) * | 2022-07-04 | 2022-09-09 | 国能(山东)能源环境有限公司 | System and process for preparing cyanuric acid through urea pyrolysis |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5341676A (en) * | 1976-09-27 | 1978-04-15 | Toyo Rubber Chemical Ind Co | Method of continuous sheet |
-
1980
- 1980-08-29 JP JP55120238A patent/JPS5936985B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5341676A (en) * | 1976-09-27 | 1978-04-15 | Toyo Rubber Chemical Ind Co | Method of continuous sheet |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115025720A (en) * | 2022-07-04 | 2022-09-09 | 国能(山东)能源环境有限公司 | System and process for preparing cyanuric acid through urea pyrolysis |
CN115025720B (en) * | 2022-07-04 | 2023-08-22 | 国能(山东)能源环境有限公司 | System and process for preparing cyanuric acid by urea pyrolysis |
Also Published As
Publication number | Publication date |
---|---|
JPS5936985B2 (en) | 1984-09-06 |
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