NL8203941A - Werkwijze voor de bereiding van ureum. - Google Patents
Werkwijze voor de bereiding van ureum. Download PDFInfo
- Publication number
- NL8203941A NL8203941A NL8203941A NL8203941A NL8203941A NL 8203941 A NL8203941 A NL 8203941A NL 8203941 A NL8203941 A NL 8203941A NL 8203941 A NL8203941 A NL 8203941A NL 8203941 A NL8203941 A NL 8203941A
- Authority
- NL
- Netherlands
- Prior art keywords
- ammonia
- urea
- pressure
- carbonic acid
- synthesis
- 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
-
- 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
- C07C273/14—Separation; Purification; Stabilisation; Use of additives
- C07C273/16—Separation; Purification
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C275/00—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
- C07C275/02—Salts; Complexes; Addition compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56164150A JPS5867661A (ja) | 1981-10-16 | 1981-10-16 | 尿素合成法 |
| JP16415081 | 1981-10-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL8203941A true NL8203941A (nl) | 1983-05-16 |
Family
ID=15787686
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL8203941A NL8203941A (nl) | 1981-10-16 | 1982-10-12 | Werkwijze voor de bereiding van ureum. |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US4504679A (it) |
| JP (1) | JPS5867661A (it) |
| KR (1) | KR870001249B1 (it) |
| AR (1) | AR227990A1 (it) |
| BR (1) | BR8206031A (it) |
| CA (1) | CA1217201A (it) |
| DE (1) | DE3237653C2 (it) |
| FR (1) | FR2514759A1 (it) |
| GB (1) | GB2109372B (it) |
| IT (1) | IT1152722B (it) |
| NL (1) | NL8203941A (it) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8303425A (nl) * | 1983-10-06 | 1985-05-01 | Unie Van Kunstmestfab Bv | Werkwijze voor de bereiding van ureum. |
| JPS63112552A (ja) * | 1986-10-30 | 1988-05-17 | Toyo Eng Corp | 未転化物の分離方法 |
| EP0544056B1 (en) * | 1991-11-14 | 1998-06-24 | Urea Casale S.A. | Process for urea production with differentiated yield reaction spaces |
| US6150555A (en) * | 1992-05-08 | 2000-11-21 | Urea Casale, S.A. | Process for urea production |
| CN1051075C (zh) * | 1992-12-23 | 2000-04-05 | 中国五环化学工程公司 | 二氧化碳气提法尿素生产工艺及装置 |
| DE69326881D1 (de) * | 1993-01-07 | 1999-12-02 | Urea Casale Sa | Verbessertes Verfahren zur Produktion von Harnstoff unter Verwendung eines Schrittes zur Kohlendioxidentfernung |
| ZA96686B (en) | 1995-02-01 | 1996-08-16 | Urea Casale Sa | Process and plant for the production of urea with high conversion yield and low energy consumption |
| US5597454A (en) * | 1995-04-06 | 1997-01-28 | Lee; Jing M. | Process for producing urea |
| NL1004977C2 (nl) * | 1997-01-13 | 1998-07-15 | Dsm Nv | Methode om de capaciteit van een bestaand ureum proces te verhogen. |
| EP2343274A1 (en) * | 2010-01-07 | 2011-07-13 | Stamicarbon B.V. | A urea stripping process for the production of urea |
| ITMI20110804A1 (it) * | 2011-05-10 | 2012-11-11 | Saipem Spa | "processo ad alta resa per la sintesi dell'urea" |
| CN105246874B (zh) * | 2013-05-28 | 2018-06-12 | 东洋工程株式会社 | 尿素合成方法 |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE790015A (fr) * | 1971-10-19 | 1973-04-12 | Mavrovic Ivo | Synthese de l'uree avec conversion et recuperation de chaleur ameliorees |
| JPS5535378B2 (it) * | 1973-02-14 | 1980-09-12 | ||
| JPS585190B2 (ja) * | 1975-09-22 | 1983-01-29 | 三井東圧化学株式会社 | 尿素合成における未反応物の分離回収方法 |
| JPS5268129A (en) * | 1975-12-05 | 1977-06-06 | Mitsui Toatsu Chem Inc | Recovery of unreacted material and heat on urea synthesis |
| US4110374A (en) * | 1976-03-02 | 1978-08-29 | Mitsui Toatsu Chemicals Inc. | Process for separating and recovering unreacted materials in urea synthesis |
| JPS52105125A (en) * | 1976-03-02 | 1977-09-03 | Mitsui Toatsu Chem Inc | Separation and recovery of unreacted material on urea synthesis |
| US4088684A (en) * | 1976-07-30 | 1978-05-09 | Ivo Mavrovic | Urea reactor effluent solution recycle in urea synthesis |
| IT1068268B (it) * | 1976-09-09 | 1985-03-21 | Snam Progetti | Procedimento per la produzione di urea e purificazione delle acque |
| NO150512C (no) * | 1977-05-05 | 1984-10-31 | Montedison Spa | Fremgangsmaate ved fremstilling av urea. |
| JPS5517346A (en) * | 1978-07-24 | 1980-02-06 | Toyo Eng Corp | Synthetic method of urea |
| JPS5811432B2 (ja) * | 1979-10-08 | 1983-03-02 | 三井東圧化学株式会社 | 尿素合成法 |
| US4296252A (en) * | 1980-05-23 | 1981-10-20 | Ivo Mavrovic | Urea synthesis process |
| JPS5750954A (en) * | 1980-09-12 | 1982-03-25 | Mitsui Toatsu Chem Inc | Synthesis of urea |
| GB2089786B (en) * | 1980-12-23 | 1985-02-20 | Mitsui Toatsu Chemicals | Process for synthesizing urea |
-
1981
- 1981-10-16 JP JP56164150A patent/JPS5867661A/ja active Granted
-
1982
- 1982-09-30 US US06/430,557 patent/US4504679A/en not_active Expired - Lifetime
- 1982-10-11 DE DE3237653A patent/DE3237653C2/de not_active Expired
- 1982-10-11 AR AR290940A patent/AR227990A1/es active
- 1982-10-12 NL NL8203941A patent/NL8203941A/nl not_active Application Discontinuation
- 1982-10-15 KR KR8204641A patent/KR870001249B1/ko active
- 1982-10-15 IT IT23775/82A patent/IT1152722B/it active
- 1982-10-15 FR FR8217317A patent/FR2514759A1/fr not_active Withdrawn
- 1982-10-15 CA CA000413526A patent/CA1217201A/en not_active Expired
- 1982-10-15 BR BR8206031A patent/BR8206031A/pt unknown
- 1982-10-18 GB GB08229693A patent/GB2109372B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB2109372A (en) | 1983-06-02 |
| JPS6215070B2 (it) | 1987-04-06 |
| AR227990A1 (es) | 1982-12-30 |
| IT1152722B (it) | 1987-01-07 |
| GB2109372B (en) | 1985-06-26 |
| CA1217201A (en) | 1987-01-27 |
| BR8206031A (pt) | 1983-09-13 |
| FR2514759A1 (fr) | 1983-04-22 |
| DE3237653C2 (de) | 1984-07-19 |
| US4504679A (en) | 1985-03-12 |
| IT8223775A0 (it) | 1982-10-15 |
| KR870001249B1 (ko) | 1987-06-29 |
| JPS5867661A (ja) | 1983-04-22 |
| KR840001951A (ko) | 1984-06-07 |
| DE3237653A1 (de) | 1983-05-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A85 | Still pending on 85-01-01 | ||
| BV | The patent application has lapsed |