ES358903A1 - Process for Producing Urea - Google Patents
Process for Producing UreaInfo
- Publication number
- ES358903A1 ES358903A1 ES358903A ES358903A ES358903A1 ES 358903 A1 ES358903 A1 ES 358903A1 ES 358903 A ES358903 A ES 358903A ES 358903 A ES358903 A ES 358903A ES 358903 A1 ES358903 A1 ES 358903A1
- Authority
- ES
- Spain
- Prior art keywords
- aqueous solution
- carbon dioxide
- ammonia
- products
- reactor
- 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
- 238000000034 method Methods 0.000 title abstract 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract 8
- 229910021529 ammonia Inorganic materials 0.000 abstract 4
- 239000007864 aqueous solution Substances 0.000 abstract 4
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract 4
- 239000001569 carbon dioxide Substances 0.000 abstract 4
- BVCZEBOGSOYJJT-UHFFFAOYSA-N ammonium carbamate Chemical compound [NH4+].NC([O-])=O BVCZEBOGSOYJJT-UHFFFAOYSA-N 0.000 abstract 2
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 abstract 2
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 230000005484 gravity Effects 0.000 abstract 1
- 238000004064 recycling Methods 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)
Abstract
Process for the production of urea which comprises feeding ammonia and carbon dioxide into a reactor, reacting the ammonia and carbon dioxide so as to produce an effluent aqueous solution of urea contaminated with ammonium carbamate, splitting the latter into NH 3 and CO 2 , stripping in a stripper the products of the splitting from the said aqueous solution in the presence of a stripping agent selected from ammonia and carbon dioxide so as to produce an aqueous solution of urea substantially free from ammonium carbamate, condensing the products which have been stripped and recycling the condensed products to the reactor by entraining the condensed stripped products in the ammonia or carbon dioxide which is fed to the reactor. The stripping is usually carried out in a single stage at a high pressure, preferably from 80 to 200 kg/cm.2, and usually at a temperature of from 160 to 250 C. The stripper may be positioned so that the effluent aqueous solution falls into it from the reactor under the force of gravity.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT1240968 | 1968-02-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES358903A1 true ES358903A1 (en) | 1970-05-16 |
Family
ID=11139817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES358903A Expired ES358903A1 (en) | 1968-02-06 | 1968-09-27 | Process for Producing Urea |
Country Status (14)
| Country | Link |
|---|---|
| AT (1) | AT284138B (en) |
| BE (1) | BE714519A (en) |
| CA (1) | CA923142A (en) |
| CH (1) | CH486428A (en) |
| CS (1) | CS159227B2 (en) |
| DK (1) | DK119604B (en) |
| ES (1) | ES358903A1 (en) |
| FR (1) | FR1560985A (en) |
| GB (1) | GB1188051A (en) |
| IE (1) | IE31898B1 (en) |
| LU (1) | LU55998A1 (en) |
| NL (1) | NL162370C (en) |
| NO (1) | NO129250B (en) |
| YU (1) | YU33003B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3954861A (en) * | 1968-02-05 | 1976-05-04 | Snamprogetti S.P.A | Process for producing urea |
| NL7307036A (en) * | 1973-05-21 | 1974-11-25 | ||
| BG35038A3 (en) * | 1977-05-05 | 1984-01-16 | Montedison Spa | Method and installation for synthesis of urea |
| NL8101174A (en) * | 1981-03-11 | 1982-10-01 | Unie Van Kunstmestfab Bv | METHOD FOR THE PREPARATION OF UREA. |
| EP2123633A1 (en) | 2008-05-19 | 2009-11-25 | DSM IP Assets B.V. | Process for the production of urea from ammonia and carbon dioxide |
| EP2286909A1 (en) | 2009-08-17 | 2011-02-23 | Stamicarbon B.V. | An apparatus for the decomposition of non-converted ammonium carbamate in urea solutions in a urea synthesis process |
| EA201791374A1 (en) | 2014-12-18 | 2017-10-31 | Стамикарбон Б.В. | METHOD OF MANUFACTURE OF CARBAMIDE |
-
1968
- 1968-04-18 AT AT380168A patent/AT284138B/en not_active IP Right Cessation
- 1968-04-19 DK DK178068AA patent/DK119604B/en not_active IP Right Cessation
- 1968-04-19 YU YU945/68A patent/YU33003B/en unknown
- 1968-04-25 CS CS308068A patent/CS159227B2/cs unknown
- 1968-04-29 LU LU55998D patent/LU55998A1/xx unknown
- 1968-04-29 FR FR1560985D patent/FR1560985A/fr not_active Expired
- 1968-04-30 CH CH646968A patent/CH486428A/en not_active IP Right Cessation
- 1968-04-30 BE BE714519D patent/BE714519A/xx not_active IP Right Cessation
- 1968-05-01 NL NL6806170.A patent/NL162370C/en not_active IP Right Cessation
- 1968-05-01 GB GB20720/68A patent/GB1188051A/en not_active Expired
- 1968-05-03 NO NO01723/68A patent/NO129250B/no unknown
- 1968-05-07 IE IE533/68A patent/IE31898B1/en unknown
- 1968-09-27 ES ES358903A patent/ES358903A1/en not_active Expired
-
1969
- 1969-01-09 CA CA039707A patent/CA923142A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| AT284138B (en) | 1970-09-10 |
| YU33003B (en) | 1976-03-31 |
| BE714519A (en) | 1968-09-30 |
| IE31898L (en) | 1969-08-06 |
| DK119604B (en) | 1971-02-01 |
| IE31898B1 (en) | 1973-02-07 |
| FR1560985A (en) | 1969-03-21 |
| YU94568A (en) | 1975-08-31 |
| CS159227B2 (en) | 1974-12-27 |
| DE1768248B2 (en) | 1973-02-01 |
| LU55998A1 (en) | 1968-07-12 |
| NO129250B (en) | 1974-03-18 |
| NL162370C (en) | 1980-05-16 |
| CA923142A (en) | 1973-03-20 |
| DE1768248A1 (en) | 1972-03-30 |
| GB1188051A (en) | 1970-04-15 |
| CH486428A (en) | 1970-02-28 |
| NL6806170A (en) | 1969-08-08 |
| NL162370B (en) | 1979-12-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FD1A | Patent lapsed |
Effective date: 19871021 |