IT1271435B - Procedimento per la sintesi di urea da ammoniaca e anidride carbonica a conversione totale in anidride carbonica - Google Patents
Procedimento per la sintesi di urea da ammoniaca e anidride carbonica a conversione totale in anidride carbonicaInfo
- Publication number
- IT1271435B IT1271435B ITMI930455A ITMI930455A IT1271435B IT 1271435 B IT1271435 B IT 1271435B IT MI930455 A ITMI930455 A IT MI930455A IT MI930455 A ITMI930455 A IT MI930455A IT 1271435 B IT1271435 B IT 1271435B
- Authority
- IT
- Italy
- Prior art keywords
- carbon dioxide
- urea
- distillation column
- synthesis
- reactive distillation
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
- C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
- C07C273/04—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds from carbon dioxide and ammonia
-
- 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
- Y02P20/10—Process efficiency
-
- 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
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Viene descritto un procedimento, per la sintesi di urea da NH3 e CO2 a conversione totale in CO2, che comprende:a) alimentare in controcorrente in una colonna di distillazione reattiva l'NH3 sul fondo e la CO2 nella zona centrale, ottenendo di fondo una corrente liquida contenente urea, NH3 e acqua e di testa una corrente gassosa e/o supercritica costituita da NH3 e acqua;b) alimentare la corrente liquida proveniente dal fondo della colonna di distillazione reattiva in uno o più stadi di separazione, ottenendo correnti contenenti NH3 ed una corrente contenente urea da inviare al successivo stadio di prilling;c) alimentare la corrente gassosa e/o supercritica proveniente dalla testa della colonna di distillazione reattiva in una colonna di distillazione reattiva in una colonna di distillazione dal cui fondo viene separata l'acqua e dalla testa l'NH3.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI930455A IT1271435B (it) | 1993-03-10 | 1993-03-10 | Procedimento per la sintesi di urea da ammoniaca e anidride carbonica a conversione totale in anidride carbonica |
EP94200563A EP0614883A1 (en) | 1993-03-10 | 1994-03-05 | Process for synthetizing urea from ammonia and carbon dioxide, with total carbon dioxide conversion |
NO940806A NO940806L (no) | 1993-03-10 | 1994-03-08 | Fremgangsmåte for å syntentisere urea |
CA002118659A CA2118659A1 (en) | 1993-03-10 | 1994-03-09 | Process for synthetizing urea from ammonia and carbon dioxide, with total carbon dioxide conversion |
CN94102277A CN1101343A (zh) | 1993-03-10 | 1994-03-10 | 尿素的合成方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI930455A IT1271435B (it) | 1993-03-10 | 1993-03-10 | Procedimento per la sintesi di urea da ammoniaca e anidride carbonica a conversione totale in anidride carbonica |
Publications (3)
Publication Number | Publication Date |
---|---|
ITMI930455A0 ITMI930455A0 (it) | 1993-03-10 |
ITMI930455A1 ITMI930455A1 (it) | 1994-09-10 |
IT1271435B true IT1271435B (it) | 1997-05-28 |
Family
ID=11365304
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ITMI930455A IT1271435B (it) | 1993-03-10 | 1993-03-10 | Procedimento per la sintesi di urea da ammoniaca e anidride carbonica a conversione totale in anidride carbonica |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0614883A1 (it) |
CN (1) | CN1101343A (it) |
CA (1) | CA2118659A1 (it) |
IT (1) | IT1271435B (it) |
NO (1) | NO940806L (it) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1283483B1 (it) * | 1996-07-23 | 1998-04-21 | Eurotecnica Contractors Engine | Processo per la sintesi di urea da ammoniaca e anidride carbonica e apparecchiatura utile per la realizzazione del processo |
CN101628186B (zh) * | 2009-06-30 | 2012-05-09 | 青岛科技大学 | 结合尿素生产系统的超临界二氧化碳萃取工艺流程 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4296252A (en) * | 1980-05-23 | 1981-10-20 | Ivo Mavrovic | Urea synthesis process |
NL8800284A (nl) * | 1988-02-08 | 1989-09-01 | Stamicarbon | Werkwijze voor de bereiding van ureum. |
IT1232669B (it) * | 1989-09-15 | 1992-03-02 | Snam Progetti | Procedimento per la produzione di urea con elevato rendimento energetico. |
-
1993
- 1993-03-10 IT ITMI930455A patent/IT1271435B/it active IP Right Grant
-
1994
- 1994-03-05 EP EP94200563A patent/EP0614883A1/en not_active Withdrawn
- 1994-03-08 NO NO940806A patent/NO940806L/no unknown
- 1994-03-09 CA CA002118659A patent/CA2118659A1/en not_active Abandoned
- 1994-03-10 CN CN94102277A patent/CN1101343A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
ITMI930455A0 (it) | 1993-03-10 |
NO940806D0 (no) | 1994-03-08 |
ITMI930455A1 (it) | 1994-09-10 |
NO940806L (no) | 1994-09-12 |
EP0614883A1 (en) | 1994-09-14 |
CN1101343A (zh) | 1995-04-12 |
CA2118659A1 (en) | 1994-09-11 |
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Legal Events
Date | Code | Title | Description |
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0001 | Granted |