FR2421847A1 - INTEGRATED AMMONIA-UREE SYNTHESIS PROCESS - Google Patents
INTEGRATED AMMONIA-UREE SYNTHESIS PROCESSInfo
- Publication number
- FR2421847A1 FR2421847A1 FR7907848A FR7907848A FR2421847A1 FR 2421847 A1 FR2421847 A1 FR 2421847A1 FR 7907848 A FR7907848 A FR 7907848A FR 7907848 A FR7907848 A FR 7907848A FR 2421847 A1 FR2421847 A1 FR 2421847A1
- Authority
- FR
- France
- Prior art keywords
- ammonia
- urea
- carbon dioxide
- solution
- carbamate
- 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.)
- Granted
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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Procédé intégré de synthèse ammoniac-urée. Ce procédé consiste à épurer l'anhydride carbonique d'un courant gazeux provenant de la reformation de vapeur d'hydrocarbures, par action d'une solution d'ammoniac très concentrée, puis par action d'une solution ammoniaquée de carbonate d'ammonium, à envoyer la solution de carbamate obtenue au réacteur d'urée, à décharger de celui-ci la solution d'urée contenant du carbamate non converti et de l'ammoniac en excès, à décomposer ledit carbamate et à envoyer l'ammoniac dégagé au réacteur d'urée en même temps que l'anhydride carbonique à décharger la solution d'urée à un épurateur adiabatique, ou le gaz d'épuration est essentiellement composé par l'hydrogène et l'azote, à éliminer l'ammoniac et l'anhydride carbonique avec l'eau de l'épurateur adiabatique et à condenser l'ammoniac et l'anhydride carbonique par échange thermique, à envoyer le courant d'hydrogène et d'azote à la méthanisation et à la synthèse de l'ammoniac et à concentrer la solution d'urée directement jusqu'à obtention d'une masse fondue d'urée.Integrated ammonia-urea synthesis process. This process consists in purifying carbon dioxide from a gas stream originating from the reformation of hydrocarbon vapor, by the action of a highly concentrated ammonia solution, then by the action of an ammonia-based solution of ammonium carbonate, sending the carbamate solution obtained to the urea reactor, discharging therefrom the urea solution containing unconverted carbamate and excess ammonia, decomposing said carbamate and sending the ammonia released to the reactor of urea at the same time as carbon dioxide to discharge the urea solution to an adiabatic scrubber, or the scrubbing gas is mainly composed of hydrogen and nitrogen, to remove ammonia and anhydride carbon dioxide with the water from the adiabatic scrubber and to condense the ammonia and carbon dioxide by heat exchange, to send the stream of hydrogen and nitrogen to the methanization and the synthesis of ammonia and to concentrate the urea solution directly until a urea melt.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT21993/78A IT1094295B (en) | 1978-04-05 | 1978-04-05 | INTEGRATED AMMONIA-UREA PROCEDURE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2421847A1 true FR2421847A1 (en) | 1979-11-02 |
| FR2421847B1 FR2421847B1 (en) | 1982-10-22 |
Family
ID=11189914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7907848A Granted FR2421847A1 (en) | 1978-04-05 | 1979-03-28 | INTEGRATED AMMONIA-UREE SYNTHESIS PROCESS |
Country Status (23)
| Country | Link |
|---|---|
| JP (1) | JPS54132525A (en) |
| AU (1) | AU519817B2 (en) |
| BE (1) | BE875346A (en) |
| BR (1) | BR7902122A (en) |
| CA (1) | CA1110659A (en) |
| CH (1) | CH637633A5 (en) |
| CS (1) | CS230563B2 (en) |
| DD (1) | DD142709A5 (en) |
| DE (1) | DE2913793C3 (en) |
| DK (1) | DK139179A (en) |
| EG (1) | EG13847A (en) |
| ES (1) | ES479940A1 (en) |
| FR (1) | FR2421847A1 (en) |
| GB (1) | GB2018249B (en) |
| IE (1) | IE48099B1 (en) |
| IN (1) | IN150631B (en) |
| IT (1) | IT1094295B (en) |
| LU (1) | LU81113A1 (en) |
| MX (1) | MX151216A (en) |
| NL (1) | NL7902566A (en) |
| PL (1) | PL116665B1 (en) |
| SE (1) | SE432591B (en) |
| SU (1) | SU1225485A3 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61109760A (en) * | 1984-11-02 | 1986-05-28 | Toyo Eng Corp | Production of urea |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1907025A1 (en) * | 1968-02-12 | 1969-09-18 | Sumitomo Chemical Co | Process for the production of urea |
| DE1903117A1 (en) * | 1968-01-23 | 1969-11-27 | Sumitomo Chemical Co | Process for the production of urea |
| FR2274610A1 (en) * | 1974-06-12 | 1976-01-09 | Snam Progetti | INTEGRATED PROCESS FOR THE PREPARATION OF UREA AND AMMONIA |
| FR2305391A1 (en) * | 1975-03-28 | 1976-10-22 | Snam Progetti | FLEXIBLE INTEGRATED PROCESS FOR MANUFACTURING AMMONIA AND UREA |
| FR2375198A1 (en) * | 1976-12-23 | 1978-07-21 | Snam Progetti | INTEGRATED PROCESS FOR MANUFACTURING AMMONIA AND UREA, FOR THE PRODUCTION OF UREA |
-
1978
- 1978-04-05 IT IT21993/78A patent/IT1094295B/en active
-
1979
- 1979-03-07 AU AU44876/79A patent/AU519817B2/en not_active Ceased
- 1979-03-08 CA CA323,007A patent/CA1110659A/en not_active Expired
- 1979-03-15 GB GB7909086A patent/GB2018249B/en not_active Expired
- 1979-03-24 IN IN289/CAL/79A patent/IN150631B/en unknown
- 1979-03-28 EG EG195/79A patent/EG13847A/en active
- 1979-03-28 FR FR7907848A patent/FR2421847A1/en active Granted
- 1979-03-29 JP JP3633279A patent/JPS54132525A/en active Pending
- 1979-03-30 ES ES479940A patent/ES479940A1/en not_active Expired
- 1979-04-02 NL NL7902566A patent/NL7902566A/en not_active Application Discontinuation
- 1979-04-03 LU LU81113A patent/LU81113A1/en unknown
- 1979-04-03 DD DD79211973A patent/DD142709A5/en unknown
- 1979-04-03 PL PL1979214649A patent/PL116665B1/en unknown
- 1979-04-04 SE SE7903018A patent/SE432591B/en not_active IP Right Cessation
- 1979-04-04 MX MX177195A patent/MX151216A/en unknown
- 1979-04-04 CH CH313979A patent/CH637633A5/en not_active IP Right Cessation
- 1979-04-04 SU SU792749003A patent/SU1225485A3/en active
- 1979-04-04 DK DK139179A patent/DK139179A/en not_active IP Right Cessation
- 1979-04-04 CS CS792292A patent/CS230563B2/en unknown
- 1979-04-05 DE DE2913793A patent/DE2913793C3/en not_active Expired
- 1979-04-05 BE BE0/194424A patent/BE875346A/en not_active IP Right Cessation
- 1979-04-05 BR BR7902122A patent/BR7902122A/en unknown
- 1979-08-08 IE IE706/79A patent/IE48099B1/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1903117A1 (en) * | 1968-01-23 | 1969-11-27 | Sumitomo Chemical Co | Process for the production of urea |
| DE1907025A1 (en) * | 1968-02-12 | 1969-09-18 | Sumitomo Chemical Co | Process for the production of urea |
| FR2274610A1 (en) * | 1974-06-12 | 1976-01-09 | Snam Progetti | INTEGRATED PROCESS FOR THE PREPARATION OF UREA AND AMMONIA |
| FR2305391A1 (en) * | 1975-03-28 | 1976-10-22 | Snam Progetti | FLEXIBLE INTEGRATED PROCESS FOR MANUFACTURING AMMONIA AND UREA |
| FR2375198A1 (en) * | 1976-12-23 | 1978-07-21 | Snam Progetti | INTEGRATED PROCESS FOR MANUFACTURING AMMONIA AND UREA, FOR THE PRODUCTION OF UREA |
Also Published As
| Publication number | Publication date |
|---|---|
| BR7902122A (en) | 1979-12-04 |
| ES479940A1 (en) | 1979-12-01 |
| IE48099B1 (en) | 1984-09-19 |
| GB2018249A (en) | 1979-10-17 |
| CS230563B2 (en) | 1984-08-13 |
| SE432591B (en) | 1984-04-09 |
| FR2421847B1 (en) | 1982-10-22 |
| PL214649A1 (en) | 1979-12-17 |
| DD142709A5 (en) | 1980-07-09 |
| IT1094295B (en) | 1985-07-26 |
| GB2018249B (en) | 1982-09-02 |
| JPS54132525A (en) | 1979-10-15 |
| SU1225485A3 (en) | 1986-04-15 |
| CA1110659A (en) | 1981-10-13 |
| CH637633A5 (en) | 1983-08-15 |
| PL116665B1 (en) | 1981-06-30 |
| NL7902566A (en) | 1979-10-09 |
| DE2913793B2 (en) | 1980-06-04 |
| IN150631B (en) | 1982-11-20 |
| IE790706L (en) | 1979-10-05 |
| AU4487679A (en) | 1979-10-18 |
| MX151216A (en) | 1984-10-11 |
| DK139179A (en) | 1979-10-06 |
| SE7903018L (en) | 1979-10-06 |
| DE2913793C3 (en) | 1981-05-27 |
| LU81113A1 (en) | 1979-06-19 |
| EG13847A (en) | 1982-12-31 |
| IT7821993A0 (en) | 1978-04-05 |
| DE2913793A1 (en) | 1979-10-11 |
| BE875346A (en) | 1979-10-05 |
| AU519817B2 (en) | 1981-12-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |