IE31898L - Producing urea - Google Patents
Producing ureaInfo
- Publication number
- IE31898L IE31898L IE680533A IE53368A IE31898L IE 31898 L IE31898 L IE 31898L IE 680533 A IE680533 A IE 680533A IE 53368 A IE53368 A IE 53368A IE 31898 L IE31898 L IE 31898L
- Authority
- IE
- Ireland
- Prior art keywords
- urea
- aqueous solution
- carbon dioxide
- ammonia
- products
- 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
-
- 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
1,188,051. Urea. SNAM PROGETTI S.p.A. 1 May, 1968 [6 Feb., 1968], No. 20720/68. Heading C2C. 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.<SP>2</SP>, 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.
[GB1188051A]
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT1240968 | 1968-02-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE31898L true IE31898L (en) | 1969-08-06 |
| IE31898B1 IE31898B1 (en) | 1973-02-07 |
Family
ID=11139817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE533/68A IE31898B1 (en) | 1968-02-06 | 1968-05-07 | Process for the production of 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 | ||
| NL174548C (en) * | 1977-05-05 | 1988-05-16 | Montedison Spa | PROCESS FOR PREPARING UREA BY REACTION OF AMMONIA AND CARBON DIOXIDE. |
| 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 |
| EP3233792B1 (en) | 2014-12-18 | 2019-09-04 | Stamicarbon B.V. | Process for urea production |
-
1968
- 1968-04-18 AT AT380168A patent/AT284138B/en not_active IP Right Cessation
- 1968-04-19 YU YU945/68A patent/YU33003B/en unknown
- 1968-04-19 DK DK178068AA patent/DK119604B/en not_active IP Right Cessation
- 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 BE BE714519D patent/BE714519A/xx not_active IP Right Cessation
- 1968-04-30 CH CH646968A patent/CH486428A/en not_active IP Right Cessation
- 1968-05-01 GB GB20720/68A patent/GB1188051A/en not_active Expired
- 1968-05-01 NL NL6806170.A patent/NL162370C/en not_active IP Right Cessation
- 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 |
|---|---|
| DE1768248A1 (en) | 1972-03-30 |
| FR1560985A (en) | 1969-03-21 |
| AT284138B (en) | 1970-09-10 |
| CA923142A (en) | 1973-03-20 |
| ES358903A1 (en) | 1970-05-16 |
| GB1188051A (en) | 1970-04-15 |
| DK119604B (en) | 1971-02-01 |
| YU94568A (en) | 1975-08-31 |
| NL162370B (en) | 1979-12-17 |
| YU33003B (en) | 1976-03-31 |
| NO129250B (en) | 1974-03-18 |
| IE31898B1 (en) | 1973-02-07 |
| CH486428A (en) | 1970-02-28 |
| NL162370C (en) | 1980-05-16 |
| DE1768248B2 (en) | 1973-02-01 |
| LU55998A1 (en) | 1968-07-12 |
| BE714519A (en) | 1968-09-30 |
| CS159227B2 (en) | 1974-12-27 |
| NL6806170A (en) | 1969-08-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB952764A (en) | Preparation of urea | |
| IL134094A (en) | Method for producing an aqueous solution of free hydroxylamine | |
| EG14770A (en) | Process for purifying urea-containing waste water and process for preparing melamine | |
| IE31898L (en) | Producing urea | |
| ATE115120T1 (en) | PROCESS FOR THE PRODUCTION OF UREA WITH HIGH ENERGY YIELD. | |
| GB1207923A (en) | Process for urea production in combination with ammonia synthesis | |
| EG21110A (en) | Highyield process for urea synthesis | |
| IE35308L (en) | Urea production | |
| IE33879B1 (en) | Improvements in or relating to the production of urea | |
| KR840002765A (en) | Selective preparation of 2-hydroxynaphthalene-6-carboxylic acid | |
| ES443998A1 (en) | Treatment of water vapor generated in concentrating an aqueous urea solution | |
| IE32163B1 (en) | Process for the production of urea | |
| GB1479900A (en) | Process for the separation and recovery of ammonia and acid gases | |
| GB981641A (en) | Production of urea | |
| ES8301902A1 (en) | Urea production | |
| GB1016220A (en) | Production of urea | |
| GB1309275A (en) | Synthesis of urea from melamine synthesis waste gas | |
| JPS5239626A (en) | Separation and recovery process of unreacted material on urea synthesi s | |
| IE35007B1 (en) | Process for the production of urea | |
| GB1147734A (en) | Method for the preparation of urea | |
| DE69030488D1 (en) | Method and device for producing urea | |
| GB1131906A (en) | Method of synthesizing urea | |
| GB1283280A (en) | Recycle process for the preparation and processing of a hydroxylammonium salt solution in a cyclohexanone oxime synthesis | |
| GB1160030A (en) | Process and Installation for the Manufacture of Urea | |
| JPS53119826A (en) | Preparation of hydrazodicarbonamides |