LT3607B - Process for the production of urea by steps and implementation also on existing plants - Google Patents
Process for the production of urea by steps and implementation also on existing plants Download PDFInfo
- Publication number
- LT3607B LT3607B LTIP996A LTIP996A LT3607B LT 3607 B LT3607 B LT 3607B LT IP996 A LTIP996 A LT IP996A LT IP996 A LTIP996 A LT IP996A LT 3607 B LT3607 B LT 3607B
- Authority
- LT
- Lithuania
- Prior art keywords
- reactor
- synthesis
- process according
- urea
- fresh
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 46
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 239000004202 carbamide Substances 0.000 title claims abstract description 35
- 230000008569 process Effects 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000003786 synthesis reaction Methods 0.000 claims abstract description 18
- 238000011084 recovery Methods 0.000 claims abstract description 14
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 13
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 239000000376 reactant Substances 0.000 claims abstract description 9
- 238000004064 recycling Methods 0.000 claims abstract description 7
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 6
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 4
- 238000005086 pumping Methods 0.000 claims abstract description 3
- 239000003153 chemical reaction reagent Substances 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 3
- 239000011541 reaction mixture Substances 0.000 claims description 2
- 230000003134 recirculating effect Effects 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 abstract description 2
- 235000013877 carbamide Nutrition 0.000 description 31
- 239000000243 solution Substances 0.000 description 13
- 238000003795 desorption Methods 0.000 description 7
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 description 6
- 239000000047 product Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000007991 ACES buffer Substances 0.000 description 3
- 230000004927 fusion Effects 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 150000003672 ureas Chemical class 0.000 description 2
- 150000004657 carbamic acid derivatives Chemical class 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003389 potentiating effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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
- Y02P20/141—Feedstock
-
- 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
- Y02P20/582—Recycling of unreacted starting or intermediate materials
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 |
|---|---|---|---|
| CH321690 | 1990-10-05 | ||
| US08/041,944 US5403956A (en) | 1990-10-05 | 1993-04-02 | Process for urea production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| LTIP996A LTIP996A (en) | 1995-04-25 |
| LT3607B true LT3607B (en) | 1995-12-27 |
Family
ID=25692477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LTIP996A LT3607B (en) | 1990-10-05 | 1993-09-17 | Process for the production of urea by steps and implementation also on existing plants |
Country Status (7)
| Country | Link |
|---|---|
| US (3) | US5403956A (de) |
| EP (1) | EP0479103B1 (de) |
| CN (1) | CN1052975C (de) |
| AT (1) | ATE134994T1 (de) |
| DE (1) | DE69117641T2 (de) |
| LT (1) | LT3607B (de) |
| RU (1) | RU2040518C1 (de) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69117641T2 (de) * | 1990-10-05 | 1996-10-02 | Urea Casale Sa | Verfahren zur Herstellung von Harnstoff mit unterschiedlichen Leistungen sowie die Implementierung in existierenden Anlagen |
| US6150555A (en) * | 1992-05-08 | 2000-11-21 | Urea Casale, S.A. | Process for urea production |
| US6274767B1 (en) * | 1992-11-19 | 2001-08-14 | Urea Casale, S.A. | Process for the revamping of urea synthesis plants consisting of a stripper with ammonia |
| EP0611753B1 (de) * | 1993-01-07 | 1999-10-27 | Urea Casale S.A. | Verbessertes Verfahren zur Produktion von Harnstoff unter Verwendung eines Schrittes zur Kohlendioxidentfernung |
| US5523482A (en) * | 1993-05-14 | 1996-06-04 | Urea Casale S.A. | Process and plant for the production of urea in reaction spaces with different yields |
| CA2141886E (en) * | 1994-05-11 | 1999-10-12 | Federico Zardi | Reactor for two-phase reactions, in particular for urea synthesis at high pressure and temperature |
| DE69520843T2 (de) * | 1994-12-23 | 2001-12-20 | Urea Casale S.A., Lugano | Verfahren für die modernisierung einer anlage zur herstellung von harnstoff |
| IT1274362B (it) * | 1995-02-16 | 1997-07-17 | Snam Progetti | Procedimento ad alta resa per la sintesi dell'urea |
| DE69612661T2 (de) * | 1996-08-01 | 2001-12-06 | Urea Casale S.A., Lugano | Verfahren und Anlage zur Herstellung von Harnstoff mit hohem Umwandlungsgrad und niedrigem Energieverbrauch |
| US6231632B1 (en) | 1999-05-25 | 2001-05-15 | Engelhard Corporation | Urea processing agent |
| RU2359448C1 (ru) * | 2007-11-12 | 2009-06-27 | Виктор Петрович Осипов | Способ удаления антропогенных газов атмосферы земли |
| US7687041B2 (en) * | 2008-02-27 | 2010-03-30 | Kellogg Brown & Root Llc | Apparatus and methods for urea production |
| EP2784062A1 (de) * | 2013-03-27 | 2014-10-01 | Urea Casale SA | Verfahren zur Modernisierung einer selbst-strippenden Harnstoffanlage |
| EP3766865A1 (de) * | 2019-07-18 | 2021-01-20 | Casale Sa | Verfahren zur synthese von harnstoff |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4670588A (en) | 1981-10-16 | 1987-06-02 | Ammonia Casle S.A. | Process for the production of urea |
| IT1240675B (it) | 1990-04-24 | 1993-12-17 | Snam Progetti | Procedimento per la concentrazione sotto vuoto di soluzioni di urea |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1942120A (en) * | 1930-07-17 | 1934-01-02 | Standard Oil Co | Hydrogenation system |
| US3049563A (en) * | 1957-04-05 | 1962-08-14 | Sxpaf | |
| US3091637A (en) * | 1960-05-17 | 1963-05-28 | Chemical Construction Corp | Dual cycle urea synthesis process |
| US3222040A (en) * | 1962-06-25 | 1965-12-07 | John S Eckert | Support plate for packed tower |
| GB1124547A (en) * | 1966-05-02 | 1968-08-21 | Toyo Koatsu Ind Inc | Production of urea |
| GB1217560A (en) * | 1967-07-31 | 1970-12-31 | Mitsui Toatsu Chemicals | Synthesis of urea |
| US4088686A (en) * | 1976-01-21 | 1978-05-09 | Ivo Mavrovic | Urea synthesis with improved heat recovery and conversion |
| JPS5750954A (en) * | 1980-09-12 | 1982-03-25 | Mitsui Toatsu Chem Inc | Synthesis of urea |
| US4929399A (en) * | 1988-03-17 | 1990-05-29 | Union Carbide Industrial Gases Technology Inc. | Structured column packing with liquid holdup |
| DE69117641T2 (de) * | 1990-10-05 | 1996-10-02 | Urea Casale Sa | Verfahren zur Herstellung von Harnstoff mit unterschiedlichen Leistungen sowie die Implementierung in existierenden Anlagen |
| US5276183A (en) * | 1991-01-29 | 1994-01-04 | Urea Casale S.A. | Process and plant for the production of urea |
| IT1245396B (it) * | 1991-03-22 | 1994-09-20 | Snam Progetti | Procedimento per la produzione di urea ad elevata efficienza energetica |
| EP0544056B1 (de) * | 1991-11-14 | 1998-06-24 | Urea Casale S.A. | Verfahren zur Herstellung von Harnstoff mit Reaktionsräumen unterschiedlicher Ausbeuten |
-
1991
- 1991-09-25 DE DE69117641T patent/DE69117641T2/de not_active Revoked
- 1991-09-25 EP EP91116297A patent/EP0479103B1/de not_active Revoked
- 1991-09-25 AT AT91116297T patent/ATE134994T1/de not_active IP Right Cessation
- 1991-10-04 CN CN91110664A patent/CN1052975C/zh not_active Expired - Fee Related
- 1991-10-04 RU SU915001892A patent/RU2040518C1/ru active
-
1993
- 1993-04-02 US US08/041,944 patent/US5403956A/en not_active Expired - Lifetime
- 1993-09-17 LT LTIP996A patent/LT3607B/lt not_active IP Right Cessation
-
1994
- 1994-12-12 US US08/354,482 patent/US5580236A/en not_active Expired - Lifetime
-
1995
- 1995-06-07 US US08/478,693 patent/US5573735A/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4670588A (en) | 1981-10-16 | 1987-06-02 | Ammonia Casle S.A. | Process for the production of urea |
| IT1240675B (it) | 1990-04-24 | 1993-12-17 | Snam Progetti | Procedimento per la concentrazione sotto vuoto di soluzioni di urea |
Also Published As
| Publication number | Publication date |
|---|---|
| DE69117641D1 (de) | 1996-04-11 |
| CN1065060A (zh) | 1992-10-07 |
| CN1052975C (zh) | 2000-05-31 |
| EP0479103B1 (de) | 1996-03-06 |
| DE69117641T2 (de) | 1996-10-02 |
| US5580236A (en) | 1996-12-03 |
| EP0479103A1 (de) | 1992-04-08 |
| US5403956A (en) | 1995-04-04 |
| RU2040518C1 (ru) | 1995-07-25 |
| US5573735A (en) | 1996-11-12 |
| LTIP996A (en) | 1995-04-25 |
| ATE134994T1 (de) | 1996-03-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM9A | Lapsed patents |
Effective date: 20000917 |