BG45384A3 - Метод за получаване на карбамид - Google Patents
Метод за получаване на карбамидInfo
- Publication number
- BG45384A3 BG45384A3 BG076137A BG7613786A BG45384A3 BG 45384 A3 BG45384 A3 BG 45384A3 BG 076137 A BG076137 A BG 076137A BG 7613786 A BG7613786 A BG 7613786A BG 45384 A3 BG45384 A3 BG 45384A3
- Authority
- BG
- Bulgaria
- Prior art keywords
- urea
- pressure
- synthesis
- additional
- gas mixture
- Prior art date
Links
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title abstract 7
- 239000004202 carbamide Substances 0.000 title abstract 7
- 238000000034 method Methods 0.000 title abstract 2
- 230000015572 biosynthetic process Effects 0.000 abstract 6
- 238000003786 synthesis reaction Methods 0.000 abstract 6
- 239000007789 gas Substances 0.000 abstract 5
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 abstract 4
- 239000000203 mixture Substances 0.000 abstract 4
- 238000000354 decomposition reaction Methods 0.000 abstract 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract 2
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract 1
- 239000001569 carbon dioxide Substances 0.000 abstract 1
- 239000012141 concentrate Substances 0.000 abstract 1
- 238000004821 distillation Methods 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 230000008020 evaporation Effects 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
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
При метода карбамиден синтезен разтвор, съдържащ карбамат и свободен амоняк, се получава в частта под високо налягане на синтезната зона при молно съотношение на nн3 и со2 до 4:1, тнмпература, наймалко, и съответно налягане. Част от карбамата се разлага в първи етап на разлагане при синтезно или пониско налягане чрез дестилационно обработване с въглероден двуокис при подаване на топлина, като получената газова смес се кондензира наймалко отчасти, а кондензатът и некондензираната част от нея се връщат към синтезната зона. Допълнителна порция от все още наличния карбамат се разлага в наймалко два допълнителни етапа на разлагане и образуваната газова смес се отделя, като в първия от допълнителните етапи налягането се поддържа от 12 до 30 бара и се подава топлина, а остатъчният разтвор, съдържащ карбамид, се обработва допълнително чрез изпаряване, за да се концентрира карбамидният разтвор, и при желание се получава твърд карбамид. Газовата смес, образувана при разширението на дестилирания карбамиден синтезен разтвор до налягане, равно или повисоко от налягането в първия от допълнителните етапи на разлагане, се довежда в пряк контакт в контактна зона с разтвора, оставащ след като допълнителни количества все още наличен карбамат са разложени и получените газове са отделени. След това остатъчната газова смес се разтоварва от контактната зона и се кондензира. Кондензатът се връща обратно към частта с високо налягане на карбамидния синтез. 3 претенции
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL8502227A NL8502227A (nl) | 1985-08-12 | 1985-08-12 | Werkwijze voor de bereiding van ureum. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BG45384A3 true BG45384A3 (bg) | 1989-05-15 |
Family
ID=19846410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BG076137A BG45384A3 (bg) | 1985-08-12 | 1986-08-11 | Метод за получаване на карбамид |
Country Status (19)
| Country | Link |
|---|---|
| US (1) | US4801745A (bg) |
| EP (1) | EP0212744A1 (bg) |
| JP (1) | JPS6239559A (bg) |
| KR (1) | KR870002057A (bg) |
| CN (1) | CN86105256A (bg) |
| AU (1) | AU592360B2 (bg) |
| BG (1) | BG45384A3 (bg) |
| BR (1) | BR8603801A (bg) |
| ES (1) | ES2000389A6 (bg) |
| GR (1) | GR862097B (bg) |
| HU (1) | HUT45970A (bg) |
| IL (1) | IL79678A0 (bg) |
| NL (1) | NL8502227A (bg) |
| NO (1) | NO163097C (bg) |
| OA (1) | OA08383A (bg) |
| SU (1) | SU1494865A3 (bg) |
| TR (1) | TR22843A (bg) |
| YU (1) | YU139786A (bg) |
| ZA (1) | ZA865985B (bg) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8800259A (nl) * | 1988-02-04 | 1989-09-01 | Stamicarbon | Werkwijze voor het concentreren van een ureumoplossing. |
| IT1232669B (it) * | 1989-09-15 | 1992-03-02 | Snam Progetti | Procedimento per la produzione di urea con elevato rendimento energetico. |
| EP0544056B1 (en) * | 1991-11-14 | 1998-06-24 | Urea Casale S.A. | Process for urea production with differentiated yield reaction spaces |
| US5523482A (en) * | 1993-05-14 | 1996-06-04 | Urea Casale S.A. | Process and plant for the production of urea in reaction spaces with different yields |
| ZA96686B (en) * | 1995-02-01 | 1996-08-16 | Urea Casale Sa | Process and plant for the production of urea with high conversion yield and low energy consumption |
| IT1274362B (it) * | 1995-02-16 | 1997-07-17 | Snam Progetti | Procedimento ad alta resa per la sintesi dell'urea |
| US5597454A (en) * | 1995-04-06 | 1997-01-28 | Lee; Jing M. | Process for producing urea |
| JP4358428B2 (ja) | 2000-11-01 | 2009-11-04 | 東洋エンジニアリング株式会社 | 尿素製造方法 |
| JP4627959B2 (ja) * | 2001-07-23 | 2011-02-09 | 東洋エンジニアリング株式会社 | 尿素合成方法 |
| EP1279663B2 (en) † | 2001-07-23 | 2010-07-28 | Toyo Engineering Corporation | Urea synthesis process |
| EP1918273A1 (en) * | 2006-11-04 | 2008-05-07 | Urea Casale S.A. | Process for urea production and related plant |
| ITMI20071029A1 (it) | 2007-05-22 | 2008-11-23 | Snam Progetti | Procedimento migliorato per la sintesi di urea |
| EP2343274A1 (en) * | 2010-01-07 | 2011-07-13 | Stamicarbon B.V. | A urea stripping process for the production of urea |
| ITMI20110804A1 (it) | 2011-05-10 | 2012-11-11 | Saipem Spa | "processo ad alta resa per la sintesi dell'urea" |
| ITMI20120013A1 (it) | 2012-01-09 | 2013-07-10 | Saipem Spa | Procedimento per la sintesi di urea comprendente un flusso di passivazione a fondo stripper |
| US10501407B2 (en) | 2015-09-08 | 2019-12-10 | Toyo Engineering Corporation | Urea manufacturing method and urea manufacturing apparatus |
| JP2024506980A (ja) | 2021-02-22 | 2024-02-15 | スタミカーボン・ベー・フェー | 尿素製造プロセス及び並列ｍｐユニットを備えたプラント |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3406201A (en) * | 1965-06-18 | 1968-10-15 | Exxon Research Engineering Co | Urea synthesis |
| NL172058C (nl) * | 1972-06-12 | 1983-07-01 | Unie Van Kunstmestfab Bv | Werkwijze voor de bereiding van ureum. |
| JPS5268129A (en) * | 1975-12-05 | 1977-06-06 | Mitsui Toatsu Chem Inc | Recovery of unreacted material and heat on urea synthesis |
| IT1068268B (it) * | 1976-09-09 | 1985-03-21 | Snam Progetti | Procedimento per la produzione di urea e purificazione delle acque |
| IT1065422B (it) * | 1976-12-23 | 1985-02-25 | Snam Progetti | Processo ammoniaca-urea integrato per la produzione di urea |
| JPS5750954A (en) * | 1980-09-12 | 1982-03-25 | Mitsui Toatsu Chem Inc | Synthesis of urea |
| GB2089786B (en) * | 1980-12-23 | 1985-02-20 | Mitsui Toatsu Chemicals | Process for synthesizing urea |
| NL8303888A (nl) * | 1983-11-13 | 1985-06-03 | Unie Van Kunstmestfab Bv | Werkwijze voor de bereiding van ureum. |
-
1985
- 1985-08-12 NL NL8502227A patent/NL8502227A/nl not_active Application Discontinuation
-
1986
- 1986-08-02 KR KR1019860006383A patent/KR870002057A/ko not_active Application Discontinuation
- 1986-08-06 YU YU01397/86A patent/YU139786A/xx unknown
- 1986-08-07 EP EP86201386A patent/EP0212744A1/en not_active Withdrawn
- 1986-08-08 HU HU863515A patent/HUT45970A/hu unknown
- 1986-08-08 ZA ZA865985A patent/ZA865985B/xx unknown
- 1986-08-08 SU SU864027931A patent/SU1494865A3/ru active
- 1986-08-08 GR GR862097A patent/GR862097B/el unknown
- 1986-08-08 BR BR8603801A patent/BR8603801A/pt unknown
- 1986-08-08 ES ES8600966A patent/ES2000389A6/es not_active Expired
- 1986-08-08 NO NO863211A patent/NO163097C/no unknown
- 1986-08-09 CN CN198686105256A patent/CN86105256A/zh active Pending
- 1986-08-11 TR TR449/86A patent/TR22843A/xx unknown
- 1986-08-11 IL IL79678A patent/IL79678A0/xx unknown
- 1986-08-11 BG BG076137A patent/BG45384A3/bg unknown
- 1986-08-11 US US06/895,430 patent/US4801745A/en not_active Expired - Fee Related
- 1986-08-11 AU AU61039/86A patent/AU592360B2/en not_active Expired - Fee Related
- 1986-08-12 JP JP61187947A patent/JPS6239559A/ja active Pending
- 1986-08-12 OA OA58927A patent/OA08383A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ES2000389A6 (es) | 1988-02-16 |
| OA08383A (fr) | 1988-02-29 |
| AU6103986A (en) | 1987-02-19 |
| US4801745A (en) | 1989-01-31 |
| GR862097B (en) | 1986-12-30 |
| HUT45970A (en) | 1988-09-28 |
| JPS6239559A (ja) | 1987-02-20 |
| NO163097B (no) | 1989-12-27 |
| TR22843A (tr) | 1988-08-22 |
| SU1494865A3 (ru) | 1989-07-15 |
| AU592360B2 (en) | 1990-01-11 |
| NL8502227A (nl) | 1987-03-02 |
| NO163097C (no) | 1990-04-04 |
| YU139786A (en) | 1988-04-30 |
| NO863211L (no) | 1987-02-13 |
| IL79678A0 (en) | 1986-11-30 |
| ZA865985B (en) | 1987-03-25 |
| KR870002057A (ko) | 1987-03-28 |
| EP0212744A1 (en) | 1987-03-04 |
| BR8603801A (pt) | 1987-03-17 |
| NO863211D0 (no) | 1986-08-08 |
| CN86105256A (zh) | 1987-04-01 |
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