GB1268430A - Process for the production of urea - Google Patents
Process for the production of ureaInfo
- Publication number
- GB1268430A GB1268430A GB56005/69A GB5600569A GB1268430A GB 1268430 A GB1268430 A GB 1268430A GB 56005/69 A GB56005/69 A GB 56005/69A GB 5600569 A GB5600569 A GB 5600569A GB 1268430 A GB1268430 A GB 1268430A
- Authority
- GB
- United Kingdom
- Prior art keywords
- urea
- reactor
- aqueous solution
- ammonium carbamate
- inert gas
- 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
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
Abstract
1,268,430. Process for the production of urea. SNAM PROGETTI S.p.A. 14 Nov., 1969 [16 Dec., 1968], No. 56005/69. Heading C2C. A process for the continuous production of an aqueous solution of urea comprises reacting CO 2 and NH 3 in the presence of water in a first reactor so as to form an aqueous solution of ammonium carbamate, converting in a second reactor at least part of the ammonium carbamate in the aqueous solution to urea, decomposing any unconverted ammonium carbamate into CO 2 and NH 3 , stripping in the presence of a gas which is inert to the initial reactants or to ammonium carbamate, the last-mentioned CO 2 and NH 3 from the urea, causing or allowing the purified urea to be withdrawn as an aqueous solution, and recycling to the first reactor the inert gas and the stripped CO 2 and NH 3 , said inert gas leaving the first reactor as a gaseous effluent and at least a part of said effluent inert gas being re-employed in a subsequent stripping operation.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2513168 | 1968-12-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1268430A true GB1268430A (en) | 1972-03-29 |
Family
ID=11215793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB56005/69A Expired GB1268430A (en) | 1968-12-16 | 1969-11-14 | Process for the production of urea |
Country Status (19)
| Country | Link |
|---|---|
| JP (1) | JPS4828422B1 (en) |
| AT (1) | AT305303B (en) |
| BE (1) | BE743187A (en) |
| BR (1) | BR6915202D0 (en) |
| CA (1) | CA975797A (en) |
| CH (1) | CH507213A (en) |
| CS (1) | CS152343B2 (en) |
| DE (1) | DE1962862A1 (en) |
| DK (1) | DK145081C (en) |
| ES (1) | ES374565A1 (en) |
| FR (1) | FR2026261A1 (en) |
| GB (1) | GB1268430A (en) |
| IE (1) | IE33879B1 (en) |
| LU (1) | LU60025A1 (en) |
| NL (1) | NL169465C (en) |
| NO (1) | NO135868C (en) |
| RO (1) | RO59626A (en) |
| YU (1) | YU39894B (en) |
| ZM (1) | ZM17669A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2167066A (en) * | 1984-11-02 | 1986-05-21 | Toyo Engineering Corp | Process for producing urea |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE787832A (en) * | 1971-09-02 | 1973-02-22 | Stamicarbon | PROCESS FOR THE PREPARATION OF UREA |
| JPS53102724A (en) * | 1977-02-18 | 1978-09-07 | Matsushita Electric Ind Co Ltd | Magnetic head and its manufacture |
| JPS5575833U (en) * | 1978-11-15 | 1980-05-24 | ||
| EA201791374A1 (en) | 2014-12-18 | 2017-10-31 | Стамикарбон Б.В. | METHOD OF MANUFACTURE OF CARBAMIDE |
-
1969
- 1969-11-14 GB GB56005/69A patent/GB1268430A/en not_active Expired
- 1969-12-08 NL NLAANVRAGE6918420,A patent/NL169465C/en not_active IP Right Cessation
- 1969-12-09 ZM ZM176/69A patent/ZM17669A1/en unknown
- 1969-12-09 IE IE1653/69A patent/IE33879B1/en unknown
- 1969-12-11 YU YU3104/69A patent/YU39894B/en unknown
- 1969-12-12 AT AT1160069A patent/AT305303B/en not_active IP Right Cessation
- 1969-12-15 NO NO4946/69A patent/NO135868C/no unknown
- 1969-12-15 DK DK662269A patent/DK145081C/en active
- 1969-12-15 CA CA069,917A patent/CA975797A/en not_active Expired
- 1969-12-15 ES ES374565A patent/ES374565A1/en not_active Expired
- 1969-12-15 DE DE19691962862 patent/DE1962862A1/en active Pending
- 1969-12-15 JP JP44100165A patent/JPS4828422B1/ja active Pending
- 1969-12-16 CH CH1869269A patent/CH507213A/en not_active IP Right Cessation
- 1969-12-16 BR BR215202/69A patent/BR6915202D0/en unknown
- 1969-12-16 CS CS8294A patent/CS152343B2/cs unknown
- 1969-12-16 BE BE743187D patent/BE743187A/xx not_active IP Right Cessation
- 1969-12-16 LU LU60025D patent/LU60025A1/xx unknown
- 1969-12-16 FR FR6943429A patent/FR2026261A1/fr not_active Withdrawn
- 1969-12-16 RO RO61877A patent/RO59626A/ro unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2167066A (en) * | 1984-11-02 | 1986-05-21 | Toyo Engineering Corp | Process for producing urea |
Also Published As
| Publication number | Publication date |
|---|---|
| ES374565A1 (en) | 1972-01-01 |
| DK145081B (en) | 1982-08-23 |
| CS152343B2 (en) | 1973-12-19 |
| CH507213A (en) | 1971-05-15 |
| DE1962862A1 (en) | 1970-07-02 |
| AT305303B (en) | 1973-02-26 |
| IE33879B1 (en) | 1974-11-27 |
| YU39894B (en) | 1985-06-30 |
| NO135868C (en) | 1977-06-15 |
| YU310469A (en) | 1982-02-28 |
| NO135868B (en) | 1977-03-07 |
| DK145081C (en) | 1983-01-31 |
| NL169465B (en) | 1982-02-16 |
| IE33879L (en) | 1970-06-16 |
| RO59626A (en) | 1976-08-15 |
| NL169465C (en) | 1982-07-16 |
| BE743187A (en) | 1970-05-28 |
| LU60025A1 (en) | 1970-02-16 |
| BR6915202D0 (en) | 1973-03-08 |
| FR2026261A1 (en) | 1970-09-18 |
| CA975797A (en) | 1975-10-07 |
| ZM17669A1 (en) | 1970-05-18 |
| JPS4828422B1 (en) | 1973-09-01 |
| NL6918420A (en) | 1970-06-18 |
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