ES8301902A1 - Urea production - Google Patents
Urea productionInfo
- Publication number
- ES8301902A1 ES8301902A1 ES505481A ES505481A ES8301902A1 ES 8301902 A1 ES8301902 A1 ES 8301902A1 ES 505481 A ES505481 A ES 505481A ES 505481 A ES505481 A ES 505481A ES 8301902 A1 ES8301902 A1 ES 8301902A1
- Authority
- ES
- Spain
- Prior art keywords
- stage
- pressure
- decomposition
- synthesis
- ammonia
- 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
Links
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title abstract 4
- 239000004202 carbamide Substances 0.000 title abstract 4
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract 6
- 238000000354 decomposition reaction Methods 0.000 abstract 4
- 230000015572 biosynthetic process Effects 0.000 abstract 3
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract 3
- 238000003786 synthesis reaction Methods 0.000 abstract 3
- 229910021529 ammonia Inorganic materials 0.000 abstract 2
- 239000001569 carbon dioxide Substances 0.000 abstract 2
- 239000003795 chemical substances by application Substances 0.000 abstract 2
- BVCZEBOGSOYJJT-UHFFFAOYSA-N ammonium carbamate Chemical group [NH4+].NC([O-])=O BVCZEBOGSOYJJT-UHFFFAOYSA-N 0.000 abstract 1
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 abstract 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Saccharide Compounds (AREA)
Abstract
A process for the production of urea from ammonia and carbon dioxide in an NH3:CO2 molar ratio of from 5:1 to 8:1 comprises the synthesis of a urea solution in a synthesis reactor and the decomposition of ammonium carbamate contained in the resulting urea solution in two stages in decomposers, the first stage using ammonia as the stripping agent and the second stage using carbon dioxide as the stripping agent. The synthesis and the first decomposition stage are carried out under a pressure equal or substantially equal to each other, which pressure is from 180 to 250 bars, whereas the second decomposition stage is carried out under a pressure of from 30 to 50 bars lower than the pressure used in the first decomposition stage.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT24357/80A IT1141030B (en) | 1980-08-29 | 1980-08-29 | PROCEDURE FOR THE PRODUCTION OF UREA |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES505481A0 ES505481A0 (en) | 1983-01-16 |
| ES8301902A1 true ES8301902A1 (en) | 1983-01-16 |
Family
ID=11213241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES505481A Expired ES8301902A1 (en) | 1980-08-29 | 1981-08-28 | Urea production |
Country Status (35)
| Country | Link |
|---|---|
| JP (1) | JPS5772955A (en) |
| KR (1) | KR850000700B1 (en) |
| AR (1) | AR226915A1 (en) |
| AT (1) | AT377253B (en) |
| AU (1) | AU544041B2 (en) |
| BE (1) | BE890118A (en) |
| BR (1) | BR8105217A (en) |
| CA (1) | CA1182838A (en) |
| CS (1) | CS228529B2 (en) |
| DD (1) | DD201780A5 (en) |
| DE (1) | DE3133765C2 (en) |
| DK (1) | DK343381A (en) |
| EG (1) | EG15405A (en) |
| ES (1) | ES8301902A1 (en) |
| FR (1) | FR2489323A1 (en) |
| GB (1) | GB2087381B (en) |
| IL (1) | IL63560A (en) |
| IN (1) | IN153584B (en) |
| IT (1) | IT1141030B (en) |
| LU (1) | LU83591A1 (en) |
| MW (1) | MW3181A1 (en) |
| MX (1) | MX152570A (en) |
| MY (1) | MY8500910A (en) |
| NL (1) | NL8104011A (en) |
| NO (1) | NO151199C (en) |
| PH (1) | PH18034A (en) |
| PL (1) | PL132177B1 (en) |
| PT (1) | PT73594B (en) |
| RO (1) | RO82682B (en) |
| SE (1) | SE447652B (en) |
| TR (1) | TR21103A (en) |
| YU (1) | YU194681A (en) |
| ZA (1) | ZA815329B (en) |
| ZM (1) | ZM7381A1 (en) |
| ZW (1) | ZW18981A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1211125B (en) * | 1981-10-16 | 1989-09-29 | Ortu Francesco | NITROGEN COMPOUNDS. PROCESS FOR THE PREPARATION OF |
| DE3364579D1 (en) * | 1982-06-03 | 1986-08-28 | Montedison Spa | Method for avoiding the corrosion of strippers in urea manufacturing plants |
| NL8400840A (en) * | 1984-03-16 | 1985-10-16 | Unie Van Kunstmestfab Bv | METHOD FOR THE PREPARATION OF UREA. |
| IT1209532B (en) * | 1984-04-20 | 1989-08-30 | Snam Progetti | PROCESS FOR THE SYNTHESIS OF UREA AND MATERIAL USED IN ITSELF. |
| IT1245396B (en) * | 1991-03-22 | 1994-09-20 | Snam Progetti | PROCEDURE FOR THE PRODUCTION OF HIGH ENERGY EFFICIENCY UREA |
| USD555828S1 (en) | 2005-08-04 | 2007-11-20 | Colgate-Palmolive Company | Dentifrice |
| US8906187B2 (en) | 2008-06-25 | 2014-12-09 | Colgate-Palmolive Company | Method of making shoulder/nozzles with film barrier liners |
| ITMI20120013A1 (en) | 2012-01-09 | 2013-07-10 | Saipem Spa | PROCEDURE FOR THE SYNTHESIS OF UREA INCLUDING A STRIPPER FUND OF PASSIVATION |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL101446C (en) * | 1960-04-08 | |||
| US4053508A (en) * | 1960-09-05 | 1977-10-11 | Stamicarbon, N.V. | Process and installation for preparing urea from ammonia and carbon dioxide |
| CH498811A (en) * | 1967-05-22 | 1970-11-15 | Chemical Construction Corp | Process for the production of urea from ammonia and carbon dioxide |
| BE757274A (en) * | 1969-10-16 | 1971-03-16 | Snam Progetti | UREA PRODUCTION PROCESS |
| US3922222A (en) * | 1973-02-20 | 1975-11-25 | Cf Ind | Method for treatment of urea crystallizer condensate |
| IT1068268B (en) * | 1976-09-09 | 1985-03-21 | Snam Progetti | PROCEDURE FOR THE PRODUCTION OF UREA AND PURIFICATION OF WATERS |
| BG35038A3 (en) * | 1977-05-05 | 1984-01-16 | Montedison Spa | Method and installation for synthesis of urea |
-
1980
- 1980-08-29 IT IT24357/80A patent/IT1141030B/en active
-
1981
- 1981-07-31 DK DK343381A patent/DK343381A/en not_active Application Discontinuation
- 1981-08-03 ZA ZA815329A patent/ZA815329B/en unknown
- 1981-08-05 ZW ZW189/81A patent/ZW18981A1/en unknown
- 1981-08-07 AU AU73904/81A patent/AU544041B2/en not_active Ceased
- 1981-08-07 GB GB8124264A patent/GB2087381B/en not_active Expired
- 1981-08-12 IL IL63560A patent/IL63560A/en unknown
- 1981-08-12 BR BR8105217A patent/BR8105217A/en unknown
- 1981-08-12 YU YU01946/81A patent/YU194681A/en unknown
- 1981-08-13 AT AT0354881A patent/AT377253B/en not_active IP Right Cessation
- 1981-08-18 MW MW31/81A patent/MW3181A1/en unknown
- 1981-08-20 ZM ZM73/81A patent/ZM7381A1/en unknown
- 1981-08-21 PH PH26083A patent/PH18034A/en unknown
- 1981-08-22 PL PL1981232761A patent/PL132177B1/en unknown
- 1981-08-24 NO NO812855A patent/NO151199C/en unknown
- 1981-08-25 TR TR21103A patent/TR21103A/en unknown
- 1981-08-25 FR FR8116244A patent/FR2489323A1/en active Granted
- 1981-08-26 MX MX188902A patent/MX152570A/en unknown
- 1981-08-26 DE DE3133765A patent/DE3133765C2/en not_active Expired
- 1981-08-26 DD DD81232813A patent/DD201780A5/en unknown
- 1981-08-26 CS CS816357A patent/CS228529B2/en unknown
- 1981-08-27 CA CA000384728A patent/CA1182838A/en not_active Expired
- 1981-08-27 KR KR8103130A patent/KR850000700B1/en not_active Expired
- 1981-08-27 BE BE0/205792A patent/BE890118A/en not_active IP Right Cessation
- 1981-08-27 LU LU83591A patent/LU83591A1/en unknown
- 1981-08-28 ES ES505481A patent/ES8301902A1/en not_active Expired
- 1981-08-28 JP JP56134360A patent/JPS5772955A/en active Pending
- 1981-08-28 RO RO105188A patent/RO82682B/en unknown
- 1981-08-28 SE SE8105105A patent/SE447652B/en not_active IP Right Cessation
- 1981-08-28 AR AR286593A patent/AR226915A1/en active
- 1981-08-28 NL NL8104011A patent/NL8104011A/en not_active Application Discontinuation
- 1981-08-28 PT PT73594A patent/PT73594B/en unknown
- 1981-08-29 EG EG81491A patent/EG15405A/en active
- 1981-08-29 IN IN970/CAL/81A patent/IN153584B/en unknown
-
1985
- 1985-12-30 MY MY910/85A patent/MY8500910A/en unknown
Also Published As
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