NO820778L - Fremgangsmaate ved fremstilling av urea. - Google Patents
Fremgangsmaate ved fremstilling av urea.Info
- Publication number
- NO820778L NO820778L NO820778A NO820778A NO820778L NO 820778 L NO820778 L NO 820778L NO 820778 A NO820778 A NO 820778A NO 820778 A NO820778 A NO 820778A NO 820778 L NO820778 L NO 820778L
- Authority
- NO
- Norway
- Prior art keywords
- pressure
- carbon dioxide
- urea
- ammonia
- stage
- Prior art date
Links
- 239000004202 carbamide Substances 0.000 title claims abstract description 65
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 title claims description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 102
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 94
- 239000000203 mixture Substances 0.000 claims abstract description 64
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 56
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 48
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 47
- BVCZEBOGSOYJJT-UHFFFAOYSA-N ammonium carbamate Chemical compound [NH4+].NC([O-])=O BVCZEBOGSOYJJT-UHFFFAOYSA-N 0.000 claims abstract description 44
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 claims abstract description 44
- 230000008569 process Effects 0.000 claims abstract description 20
- 230000009467 reduction Effects 0.000 claims abstract description 5
- 239000008246 gaseous mixture Substances 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 33
- 229910001868 water Inorganic materials 0.000 claims description 29
- 230000015572 biosynthetic process Effects 0.000 claims description 28
- 238000003786 synthesis reaction Methods 0.000 claims description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 238000003795 desorption Methods 0.000 claims description 18
- 238000005406 washing Methods 0.000 claims description 15
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 150000002500 ions Chemical class 0.000 claims description 5
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 claims description 4
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 abstract description 16
- 238000000354 decomposition reaction Methods 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 44
- 239000000243 solution Substances 0.000 description 35
- 238000007872 degassing Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000005469 granulation Methods 0.000 description 2
- 230000003179 granulation Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 235000012501 ammonium carbonate Nutrition 0.000 description 1
- -1 by 19 kg/tonne urea Chemical compound 0.000 description 1
- 238000005878 carbamate elimination reaction Methods 0.000 description 1
- 150000004657 carbamic acid derivatives Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 150000003672 ureas Chemical class 0.000 description 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
-
- 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
- C07C273/14—Separation; Purification; Stabilisation; Use of additives
- C07C273/16—Separation; Purification
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C275/00—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
- C07C275/02—Salts; Complexes; Addition compounds
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL8101174A NL8101174A (nl) | 1981-03-11 | 1981-03-11 | Werkwijze voor de bereiding van ureum. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO820778L true NO820778L (no) | 1982-09-13 |
Family
ID=19837140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO820778A NO820778L (no) | 1981-03-11 | 1982-03-10 | Fremgangsmaate ved fremstilling av urea. |
Country Status (22)
| Country | Link |
|---|---|
| EP (1) | EP0060511B1 (nl) |
| JP (1) | JPS57159756A (nl) |
| KR (1) | KR830009010A (nl) |
| AT (1) | ATE7905T1 (nl) |
| AU (1) | AU8125082A (nl) |
| BR (1) | BR8201298A (nl) |
| CS (1) | CS227344B2 (nl) |
| DD (1) | DD202535A5 (nl) |
| DE (1) | DE3260234D1 (nl) |
| ES (1) | ES8303302A1 (nl) |
| FI (1) | FI820829L (nl) |
| IL (1) | IL65220A0 (nl) |
| MA (1) | MA19404A1 (nl) |
| NL (1) | NL8101174A (nl) |
| NO (1) | NO820778L (nl) |
| OA (1) | OA07039A (nl) |
| PL (1) | PL235399A1 (nl) |
| PT (1) | PT74566B (nl) |
| RO (1) | RO84765B (nl) |
| YU (1) | YU48182A (nl) |
| ZA (1) | ZA821595B (nl) |
| ZW (1) | ZW4482A1 (nl) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1491526A1 (en) * | 2003-06-27 | 2004-12-29 | Urea Casale S.A. | Process and plant for urea production |
| EP3736415A1 (en) * | 2019-05-10 | 2020-11-11 | Yara International ASA | Steam network assembly for a plant comprising an ammonia-producing unit and a urea-producing unit |
| CN113416154B (zh) * | 2021-07-30 | 2023-01-17 | 新疆心连心能源化工有限公司 | 尿素合成未反应物循环回收方法及装置 |
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 |
| YU34282B (en) * | 1967-12-14 | 1979-04-30 | Snam Progetti | Process for the decomposition and recyclation of unreacted ammonium carbamate into the reactor for the synthesis of carbamide |
| AT284138B (de) * | 1968-02-06 | 1970-09-10 | Snam Progetti | Verfahren zur Herstellung von Harnstoff |
| NL165712C (nl) * | 1970-05-30 | 1981-05-15 | Stamicarbon | Werkwijze en inrichting voor het bij synthesedruk terug- winnen van ammoniak en kooldioxyde uit het spuigas van een ureumsynthese. |
| NL168506C (nl) * | 1970-12-31 | 1982-04-16 | Stamicarbon | Werkwijze voor de bereiding van ureum. |
| BE787832A (fr) * | 1971-09-02 | 1973-02-22 | Stamicarbon | Procede pour la preparation d'uree |
| NL7307036A (nl) * | 1973-05-21 | 1974-11-25 | ||
| NL7612162A (nl) * | 1976-11-03 | 1978-05-08 | Unie Van Kunstmestfab Bv | Werkwijze voor de bereiding van een ureum- oplossing uit nh3 en co2. |
-
1981
- 1981-03-11 NL NL8101174A patent/NL8101174A/nl not_active Application Discontinuation
-
1982
- 1982-03-05 MA MA19609A patent/MA19404A1/fr unknown
- 1982-03-05 YU YU00481/82A patent/YU48182A/xx unknown
- 1982-03-10 NO NO820778A patent/NO820778L/no unknown
- 1982-03-10 FI FI820829A patent/FI820829L/fi not_active Application Discontinuation
- 1982-03-10 IL IL65220A patent/IL65220A0/xx unknown
- 1982-03-10 BR BR8201298A patent/BR8201298A/pt unknown
- 1982-03-10 RO RO106866A patent/RO84765B/ro unknown
- 1982-03-10 ES ES510282A patent/ES8303302A1/es not_active Expired
- 1982-03-10 AU AU81250/82A patent/AU8125082A/en not_active Abandoned
- 1982-03-10 KR KR1019820001030A patent/KR830009010A/ko unknown
- 1982-03-10 ZW ZW44/82A patent/ZW4482A1/xx unknown
- 1982-03-10 ZA ZA821595A patent/ZA821595B/xx unknown
- 1982-03-11 DE DE8282101925T patent/DE3260234D1/de not_active Expired
- 1982-03-11 CS CS821668A patent/CS227344B2/cs unknown
- 1982-03-11 JP JP57037316A patent/JPS57159756A/ja active Pending
- 1982-03-11 PT PT74566A patent/PT74566B/pt unknown
- 1982-03-11 EP EP82101925A patent/EP0060511B1/en not_active Expired
- 1982-03-11 DD DD82238072A patent/DD202535A5/de unknown
- 1982-03-11 PL PL23539982A patent/PL235399A1/xx unknown
- 1982-03-11 AT AT82101925T patent/ATE7905T1/de not_active IP Right Cessation
- 1982-03-11 OA OA57634A patent/OA07039A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| OA07039A (fr) | 1983-12-31 |
| DD202535A5 (de) | 1983-09-21 |
| PT74566A (en) | 1982-04-01 |
| CS227344B2 (en) | 1984-04-16 |
| ES510282A0 (es) | 1983-02-01 |
| EP0060511A1 (en) | 1982-09-22 |
| ATE7905T1 (de) | 1984-06-15 |
| RO84765B (ro) | 1984-09-30 |
| ZA821595B (en) | 1983-01-26 |
| PL235399A1 (nl) | 1982-10-11 |
| ES8303302A1 (es) | 1983-02-01 |
| PT74566B (en) | 1983-11-07 |
| IL65220A0 (en) | 1982-05-31 |
| DE3260234D1 (en) | 1984-07-19 |
| MA19404A1 (fr) | 1982-10-01 |
| JPS57159756A (en) | 1982-10-01 |
| YU48182A (en) | 1985-03-20 |
| FI820829L (fi) | 1982-09-12 |
| ZW4482A1 (en) | 1982-07-14 |
| RO84765A (ro) | 1984-08-17 |
| KR830009010A (ko) | 1983-12-17 |
| AU8125082A (en) | 1982-09-16 |
| NL8101174A (nl) | 1982-10-01 |
| EP0060511B1 (en) | 1984-06-13 |
| BR8201298A (pt) | 1983-01-25 |
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