GEP201706706B - Urea production process and plant and method for modernization urea roduction plant - Google Patents
Urea production process and plant and method for modernization urea roduction plantInfo
- Publication number
- GEP201706706B GEP201706706B GEAP201313734A GEAP2013013734A GEP201706706B GE P201706706 B GEP201706706 B GE P201706706B GE AP201313734 A GEAP201313734 A GE AP201313734A GE AP2013013734 A GEAP2013013734 A GE AP2013013734A GE P201706706 B GEP201706706 B GE P201706706B
- Authority
- GE
- Georgia
- Prior art keywords
- plant
- carbon dioxide
- stage
- urea
- mpa
- 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
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/582—Recycling of unreacted starting or intermediate materials
Abstract
An invention relates to processes and plants for producing urea from ammonia and carbon dioxide and can be used in the chemical industry and in the production of fertilizers. The process of producing urea by synthesizing same from carbon dioxide and ammonia at high temperatures and pressures with the two-stage distillation of the synthesis products (at 1.5-2.5 and 0.2-0.5 MPa) and the recirculation of unreacted ammonia and carbon dioxide in the form of an aqueous solution of carbon ammounium salts (CAS) additionally includes a stage for the adiabatic separation of the synthesis products at a pressure of 8-12 MPa, followed by distillation at the same pressure in a stream of carbon dioxide representing 40-60% of the total amount thereof introduced into the process; the corresponding plant is additionally provided with the equipment necessary to carry out this stage. The gases isolated during this distillation stage, together with a portion of the adiabatic separation gases, are subjected to absorption-condensation at the same pressure of 8-12 MPa and are returned, in the form of a CAS solution, for synthesis. The technical result achieved by using the proposed process and plant and by the moderni¬zation of a plant for the implementation of the proposed process is an increase in the degree of conversion of the initial reagents in the synthesis zone.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2012134931/04A RU2499791C1 (en) | 2012-08-15 | 2012-08-15 | Method and apparatus for producing carbamide and method of upgrading apparatus for producing carbamide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GEP201706706B true GEP201706706B (en) | 2017-07-25 |
Family
ID=49710505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GEAP201313734A GEP201706706B (en) | 2012-08-15 | 2013-08-05 | Urea production process and plant and method for modernization urea roduction plant |
Country Status (6)
| Country | Link |
|---|---|
| GE (1) | GEP201706706B (en) |
| IN (1) | IN2015DN01008A (en) |
| RU (1) | RU2499791C1 (en) |
| TR (1) | TR201501111T1 (en) |
| UA (1) | UA112806C2 (en) |
| WO (1) | WO2014027929A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11766627B2 (en) | 2017-10-27 | 2023-09-26 | Stamicarbon B.V. | High pressure carbamate condenser |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU201591U1 (en) * | 2020-07-09 | 2020-12-22 | Акционерное общество "Аммоний" | UNIT OF CONCENTRATION OF CARBAMIDE SOLUTION |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL127236C (en) * | 1964-05-29 | |||
| SU839225A1 (en) * | 1979-07-12 | 1984-05-15 | Предприятие П/Я Г-4302 | Process for producing urea |
-
2012
- 2012-08-15 RU RU2012134931/04A patent/RU2499791C1/en active IP Right Revival
-
2013
- 2013-05-08 UA UAA201500964A patent/UA112806C2/en unknown
- 2013-08-05 IN IN1008DEN2015 patent/IN2015DN01008A/en unknown
- 2013-08-05 GE GEAP201313734A patent/GEP201706706B/en unknown
- 2013-08-05 WO PCT/RU2013/000671 patent/WO2014027929A1/en active Application Filing
- 2013-08-05 TR TR2015/01111T patent/TR201501111T1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11766627B2 (en) | 2017-10-27 | 2023-09-26 | Stamicarbon B.V. | High pressure carbamate condenser |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2499791C1 (en) | 2013-11-27 |
| WO2014027929A1 (en) | 2014-02-20 |
| UA112806C2 (en) | 2016-10-25 |
| IN2015DN01008A (en) | 2015-06-12 |
| TR201501111T1 (en) | 2018-11-21 |
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