CA1332426C - Process for enhanced urea production - Google Patents
Process for enhanced urea productionInfo
- Publication number
- CA1332426C CA1332426C CA000574628A CA574628A CA1332426C CA 1332426 C CA1332426 C CA 1332426C CA 000574628 A CA000574628 A CA 000574628A CA 574628 A CA574628 A CA 574628A CA 1332426 C CA1332426 C CA 1332426C
- Authority
- CA
- Canada
- Prior art keywords
- urea
- reaction mixture
- semi
- process according
- permeable membrane
- 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.)
- Expired - Fee Related
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
- C07C273/14—Separation; Purification; Stabilisation; Use of additives
- C07C273/16—Separation; Purification
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPI3711/87 | 1987-08-13 | ||
| AUPI371187 | 1987-08-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1332426C true CA1332426C (en) | 1994-10-11 |
Family
ID=3772379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000574628A Expired - Fee Related CA1332426C (en) | 1987-08-13 | 1988-08-12 | Process for enhanced urea production |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US5053538A (enExample) |
| EP (1) | EP0375712B1 (enExample) |
| JP (1) | JPH03501017A (enExample) |
| CN (1) | CN1024920C (enExample) |
| AT (1) | ATE86975T1 (enExample) |
| AU (1) | AU612703B2 (enExample) |
| CA (1) | CA1332426C (enExample) |
| DE (1) | DE3879498D1 (enExample) |
| IN (1) | IN169678B (enExample) |
| NO (1) | NO900630L (enExample) |
| RO (1) | RO105331B1 (enExample) |
| WO (1) | WO1989001468A1 (enExample) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NZ503576A (en) * | 1999-03-26 | 2002-10-25 | Snow Brand Milk Products Co Ltd | Method of isolating urea from an urea containing solution using a nanofiltration membrane or reverse osmotic membrane |
| JP2000281638A (ja) | 1999-03-26 | 2000-10-10 | Snow Brand Milk Prod Co Ltd | 尿素の分離方法 |
| NL1012575C2 (nl) * | 1999-07-12 | 2001-01-15 | Continental Engineering B V | Werkwijze ter bereiding van ureum. |
| US6552224B2 (en) * | 2000-06-15 | 2003-04-22 | Urea Casale S.A. | Process and plant for the production of urea |
| CN101148425B (zh) * | 2006-09-22 | 2011-10-12 | 北京航天石化技术装备工程公司 | 一种尿素合成方法 |
| IT1395383B1 (it) | 2009-09-09 | 2012-09-14 | Saipem Spa | Metodo di separazione di ammoniaca e diossido di carbonio da soluzioni acquose |
| RO131559A2 (ro) * | 2011-11-23 | 2016-12-30 | Farid Alekovich Batullin | Metodă pentru obţinerea carbamidei cristaline cu puritate ridicată |
| EP2690090A1 (en) * | 2012-07-27 | 2014-01-29 | Urea Casale SA | Concentration of the urea solution in a process for the synthesis of urea |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3147174A (en) * | 1959-10-14 | 1964-09-01 | Chemical Construction Corp | Low moisture urea melt |
| NL293154A (enExample) * | 1963-02-01 | 1900-01-01 | ||
| DK118396B (da) * | 1967-09-29 | 1970-08-17 | Snam Progetti | Fremgangsmåde til fremstilling af urinstof. |
| GB1269688A (en) * | 1969-11-01 | 1972-04-06 | Simon Eng Dudley Ltd | Improvements in or relating to the production of urea |
| CH562786A5 (enExample) * | 1972-03-22 | 1975-06-13 | Inventa Ag | |
| CH581612A5 (enExample) * | 1973-09-13 | 1976-11-15 | Inventa Ag | |
| JPS5573651A (en) * | 1978-11-30 | 1980-06-03 | Toyo Eng Corp | Preparation of urea |
| JPS5750954A (en) * | 1980-09-12 | 1982-03-25 | Mitsui Toatsu Chem Inc | Synthesis of urea |
| US4331839A (en) * | 1980-12-12 | 1982-05-25 | Reliable Electric Company | Telephone distribution frame connector assembly |
| NL8104040A (nl) * | 1981-09-01 | 1983-04-05 | Unie Van Kunstmestfab Bv | Werkwijze voor de bereiding van ureum. |
| IT1211125B (it) * | 1981-10-16 | 1989-09-29 | Ortu Francesco | Composti azotati. processo per la preparazione di |
-
1988
- 1988-08-04 IN IN663/CAL/88A patent/IN169678B/en unknown
- 1988-08-12 CA CA000574628A patent/CA1332426C/en not_active Expired - Fee Related
- 1988-08-12 EP EP88907205A patent/EP0375712B1/en not_active Expired - Lifetime
- 1988-08-12 AT AT88907205T patent/ATE86975T1/de active
- 1988-08-12 WO PCT/AU1988/000301 patent/WO1989001468A1/en not_active Ceased
- 1988-08-12 US US07/473,956 patent/US5053538A/en not_active Expired - Fee Related
- 1988-08-12 DE DE8888907205T patent/DE3879498D1/de not_active Expired - Lifetime
- 1988-08-12 AU AU23108/88A patent/AU612703B2/en not_active Ceased
- 1988-08-12 JP JP63505301A patent/JPH03501017A/ja active Pending
- 1988-08-13 CN CN88106842A patent/CN1024920C/zh not_active Expired - Fee Related
-
1990
- 1990-02-09 NO NO90900630A patent/NO900630L/no unknown
- 1990-02-13 RO RO144151A patent/RO105331B1/ro unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE3879498D1 (de) | 1993-04-22 |
| NO900630D0 (no) | 1990-02-09 |
| EP0375712B1 (en) | 1993-03-17 |
| NO900630L (no) | 1990-04-11 |
| WO1989001468A1 (en) | 1989-02-23 |
| EP0375712A1 (en) | 1990-07-04 |
| JPH03501017A (ja) | 1991-03-07 |
| AU612703B2 (en) | 1991-07-18 |
| IN169678B (enExample) | 1991-11-30 |
| US5053538A (en) | 1991-10-01 |
| ATE86975T1 (de) | 1993-04-15 |
| AU2310888A (en) | 1989-03-09 |
| CN1033992A (zh) | 1989-07-19 |
| EP0375712A4 (en) | 1990-07-03 |
| CN1024920C (zh) | 1994-06-08 |
| RO105331B1 (ro) | 1995-05-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |