JPS57188560A - Method and apparatus for preparation of urea - Google Patents
Method and apparatus for preparation of ureaInfo
- Publication number
- JPS57188560A JPS57188560A JP56073440A JP7344081A JPS57188560A JP S57188560 A JPS57188560 A JP S57188560A JP 56073440 A JP56073440 A JP 56073440A JP 7344081 A JP7344081 A JP 7344081A JP S57188560 A JPS57188560 A JP S57188560A
- Authority
- JP
- Japan
- Prior art keywords
- urea
- pressure
- liquid
- pipe
- urea synthesis
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
Abstract
PURPOSE: To prepare urea economically in an industrial scale, using the urea synthesis process from ammonia and carbon dioxide, by recycling the recovered liquid of the unreacted material to the urea synthesis tube without using the energy supplied from external source.
CONSTITUTION: Ammonia and carbon dioxide are introduced into the urea synthesis tube 1 through the pipe 6 and the pipe 7, repsectively, and made to react with each other under 140W250kg/cm2 pressure and 100W250°C. The obtained urea synthesis liquid is introduced through the pipe 9 into the high pressure decomposition reactor 2 maintained at a pressure essentially equal to the pressure of urea synthesis, and heated. The unreacted material existing in the urea synthesis liquid is decomposed into gaseous ammonia and carbon dioxide, separated from the aqueous solution of urea, introduced through the pipe 12 into the condenser 3 maintained at a pressure essentially equal to the urea synthesis pressure, and condensed. The condensed liquid is supplied to the suction side of the pump 5 driven by the liquid turbine 4, and recycled to the synthesis tube 1. The aqueous solution of urea is introduced to the liquid turbine 4 to reduce its pressure, and recovered through the pipe 18.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56073440A JPS57188560A (en) | 1981-05-18 | 1981-05-18 | Method and apparatus for preparation of urea |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56073440A JPS57188560A (en) | 1981-05-18 | 1981-05-18 | Method and apparatus for preparation of urea |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57188560A true JPS57188560A (en) | 1982-11-19 |
Family
ID=13518298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56073440A Pending JPS57188560A (en) | 1981-05-18 | 1981-05-18 | Method and apparatus for preparation of urea |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57188560A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6761868B2 (en) | 2001-05-16 | 2004-07-13 | The Chemithon Corporation | Process for quantitatively converting urea to ammonia on demand |
| US6887449B2 (en) | 2002-11-21 | 2005-05-03 | The Chemithon Corporation | Method of quantitatively producing ammonia from urea |
-
1981
- 1981-05-18 JP JP56073440A patent/JPS57188560A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6761868B2 (en) | 2001-05-16 | 2004-07-13 | The Chemithon Corporation | Process for quantitatively converting urea to ammonia on demand |
| US7008603B2 (en) | 2001-05-16 | 2006-03-07 | The Chemithon Corporation | Process and apparatus for quantitatively converting urea to ammonia on demand |
| US6887449B2 (en) | 2002-11-21 | 2005-05-03 | The Chemithon Corporation | Method of quantitatively producing ammonia from urea |
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