IE33879B1 - Improvements in or relating to the production of urea - Google Patents
Improvements in or relating to the production of ureaInfo
- Publication number
- IE33879B1 IE33879B1 IE1653/69A IE165369A IE33879B1 IE 33879 B1 IE33879 B1 IE 33879B1 IE 1653/69 A IE1653/69 A IE 1653/69A IE 165369 A IE165369 A IE 165369A IE 33879 B1 IE33879 B1 IE 33879B1
- Authority
- IE
- Ireland
- Prior art keywords
- urea
- reactor
- aqueous solution
- ammonium carbamate
- inert gas
- 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
-
- 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)
- Lead Frames For Integrated Circuits (AREA)
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.
[GB1268430A]
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2513168 | 1968-12-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE33879L IE33879L (en) | 1970-06-16 |
| IE33879B1 true IE33879B1 (en) | 1974-11-27 |
Family
ID=11215793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE1653/69A IE33879B1 (en) | 1968-12-16 | 1969-12-09 | Improvements in or relating to 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) |
Families Citing this family (5)
| 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 | ||
| JPS61109760A (en) * | 1984-11-02 | 1986-05-28 | Toyo Eng Corp | Production of urea |
| WO2016099269A1 (en) | 2014-12-18 | 2016-06-23 | Stamicarbon B.V. | Process for urea production |
-
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 IE IE1653/69A patent/IE33879B1/en unknown
- 1969-12-09 ZM ZM176/69A patent/ZM17669A1/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 JP JP44100165A patent/JPS4828422B1/ja active Pending
- 1969-12-15 DK DK662269A patent/DK145081C/en active
- 1969-12-15 CA CA069,917A patent/CA975797A/en not_active Expired
- 1969-12-15 NO NO4946/69A patent/NO135868C/no unknown
- 1969-12-15 ES ES374565A patent/ES374565A1/en not_active Expired
- 1969-12-15 DE DE19691962862 patent/DE1962862A1/en 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 LU LU60025D patent/LU60025A1/xx unknown
- 1969-12-16 CS CS8294A patent/CS152343B2/cs unknown
- 1969-12-16 RO RO61877A patent/RO59626A/ro unknown
- 1969-12-16 BE BE743187D patent/BE743187A/xx not_active IP Right Cessation
- 1969-12-16 FR FR6943429A patent/FR2026261A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| JPS4828422B1 (en) | 1973-09-01 |
| CS152343B2 (en) | 1973-12-19 |
| BR6915202D0 (en) | 1973-03-08 |
| DK145081C (en) | 1983-01-31 |
| DE1962862A1 (en) | 1970-07-02 |
| NO135868C (en) | 1977-06-15 |
| ES374565A1 (en) | 1972-01-01 |
| CA975797A (en) | 1975-10-07 |
| NL169465C (en) | 1982-07-16 |
| IE33879L (en) | 1970-06-16 |
| RO59626A (en) | 1976-08-15 |
| YU310469A (en) | 1982-02-28 |
| YU39894B (en) | 1985-06-30 |
| LU60025A1 (en) | 1970-02-16 |
| NO135868B (en) | 1977-03-07 |
| AT305303B (en) | 1973-02-26 |
| CH507213A (en) | 1971-05-15 |
| DK145081B (en) | 1982-08-23 |
| GB1268430A (en) | 1972-03-29 |
| ZM17669A1 (en) | 1970-05-18 |
| NL169465B (en) | 1982-02-16 |
| NL6918420A (en) | 1970-06-18 |
| BE743187A (en) | 1970-05-28 |
| FR2026261A1 (en) | 1970-09-18 |
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