CA1327606C - Process for the synthesis of urea - Google Patents
Process for the synthesis of ureaInfo
- Publication number
- CA1327606C CA1327606C CA000413515A CA413515A CA1327606C CA 1327606 C CA1327606 C CA 1327606C CA 000413515 A CA000413515 A CA 000413515A CA 413515 A CA413515 A CA 413515A CA 1327606 C CA1327606 C CA 1327606C
- Authority
- CA
- Canada
- Prior art keywords
- reaction zone
- reaction
- treatment step
- moles
- fact
- 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.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 36
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 239000004202 carbamide Substances 0.000 title claims abstract description 28
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 12
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 145
- 238000006243 chemical reaction Methods 0.000 claims abstract description 74
- 229910000069 nitrogen hydride Inorganic materials 0.000 claims abstract description 57
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 53
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 45
- 238000000926 separation method Methods 0.000 claims abstract description 16
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 15
- 238000009833 condensation Methods 0.000 claims abstract description 9
- 230000005494 condensation Effects 0.000 claims abstract description 9
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 239000000376 reactant Substances 0.000 claims abstract description 4
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 claims description 16
- 150000001875 compounds Chemical class 0.000 claims description 13
- 239000007788 liquid Substances 0.000 claims description 3
- PQKYLOVVTTUCKM-UHFFFAOYSA-N carbamic acid hydrate Chemical compound O.NC(O)=O PQKYLOVVTTUCKM-UHFFFAOYSA-N 0.000 claims 1
- 230000002194 synthesizing effect Effects 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 239000011552 falling film Substances 0.000 description 5
- 238000005265 energy consumption Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 241001441728 Molidae Species 0.000 description 1
- BVCZEBOGSOYJJT-UHFFFAOYSA-N ammonium carbamate Chemical compound [NH4+].NC([O-])=O BVCZEBOGSOYJJT-UHFFFAOYSA-N 0.000 description 1
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PHTXVQQRWJXYPP-UHFFFAOYSA-N ethyltrifluoromethylaminoindane Chemical compound C1=C(C(F)(F)F)C=C2CC(NCC)CC2=C1 PHTXVQQRWJXYPP-UHFFFAOYSA-N 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- XOFYZVNMUHMLCC-ZPOLXVRWSA-N prednisone Chemical compound O=C1C=C[C@]2(C)[C@H]3C(=O)C[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1 XOFYZVNMUHMLCC-ZPOLXVRWSA-N 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT8124526A IT1211125B (it) | 1981-10-16 | 1981-10-16 | Composti azotati. processo per la preparazione di |
| IT24526A/81 | 1981-10-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1327606C true CA1327606C (en) | 1994-03-08 |
Family
ID=11213863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000413515A Expired - Fee Related CA1327606C (en) | 1981-10-16 | 1982-10-15 | Process for the synthesis of urea |
Country Status (12)
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8400840A (nl) * | 1984-03-16 | 1985-10-16 | Unie Van Kunstmestfab Bv | Werkwijze voor de bereiding van ureum. |
| JPH082859B2 (ja) * | 1987-02-24 | 1996-01-17 | 東洋エンジニアリング株式会社 | 尿素製造方法 |
| IN169678B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1987-08-13 | 1991-11-30 | Austral Pacific Fertilizers | |
| EP0479103B1 (en) | 1990-10-05 | 1996-03-06 | Urea Casale S.A. | Process for the production of urea by steps with differentiated yields, and relevant implementations also on existing plants |
| US5276183A (en) * | 1991-01-29 | 1994-01-04 | Urea Casale S.A. | Process and plant for the production of urea |
| EP0544056B1 (en) * | 1991-11-14 | 1998-06-24 | Urea Casale S.A. | Process for urea production with differentiated yield reaction spaces |
| US6274767B1 (en) * | 1992-11-19 | 2001-08-14 | Urea Casale, S.A. | Process for the revamping of urea synthesis plants consisting of a stripper with ammonia |
| DE69520843T2 (de) * | 1994-12-23 | 2001-12-20 | Urea Casale S.A., Lugano | Verfahren für die modernisierung einer anlage zur herstellung von harnstoff |
| 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 |
| US5767313A (en) * | 1995-05-23 | 1998-06-16 | Dsm N.V. | Method for the preparation of urea |
| US6231632B1 (en) | 1999-05-25 | 2001-05-15 | Engelhard Corporation | Urea processing agent |
| EP2644264A1 (de) | 2012-03-28 | 2013-10-02 | Aurotec GmbH | Druckreguliertes Mehrreaktorsystem |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH498811A (de) * | 1967-05-22 | 1970-11-15 | Chemical Construction Corp | Verfahren zur Herstellung von Harnstoff aus Ammoniak und Kohlendioxyd |
| ES379855A1 (es) * | 1969-06-11 | 1973-02-16 | Titsui Toatsu Chemicals Inc | Procedimiento para sintetizar urea de dioxido de carbono y amoniaco. |
| US3984469A (en) * | 1969-10-16 | 1976-10-05 | Snam Progetti S.P.A. | Process for the production of urea |
| US4137262A (en) * | 1969-10-16 | 1979-01-30 | Snam Progetti S.P.A. | Process for the production of urea |
| BE787832A (fr) * | 1971-09-02 | 1973-02-22 | Stamicarbon | Procede pour la preparation d'uree |
| IT1068268B (it) * | 1976-09-09 | 1985-03-21 | Snam Progetti | Procedimento per la produzione di urea e purificazione delle acque |
| NO150512C (no) * | 1977-05-05 | 1984-10-31 | Montedison Spa | Fremgangsmaate ved fremstilling av urea. |
| IT1174366B (it) * | 1978-07-24 | 1987-07-01 | Ortu Francesco | Decompositore di carbammato per produzione industriale di urea |
| IT1141030B (it) * | 1980-08-29 | 1986-10-01 | Snam Progetti | Procedimento per la produzione di urea |
-
1981
- 1981-10-16 IT IT8124526A patent/IT1211125B/it active
-
1982
- 1982-07-30 DE DE19823228594 patent/DE3228594A1/de not_active Withdrawn
- 1982-08-09 FR FR8213857A patent/FR2514758B1/fr not_active Expired
- 1982-08-19 NL NL8203258A patent/NL8203258A/nl not_active Application Discontinuation
- 1982-08-25 IN IN985/CAL/82A patent/IN157310B/en unknown
- 1982-09-20 SU SU823494195A patent/SU1428191A3/ru active
- 1982-09-21 AR AR290732A patent/AR230620A1/es active
- 1982-09-22 GB GB08227073A patent/GB2107311B/en not_active Expired
- 1982-10-15 CA CA000413515A patent/CA1327606C/en not_active Expired - Fee Related
- 1982-10-15 JP JP57180069A patent/JPS5883666A/ja active Pending
- 1982-10-15 ES ES516549A patent/ES8404676A1/es not_active Expired
-
1984
- 1984-08-13 US US06/640,243 patent/US4670588A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| IT1211125B (it) | 1989-09-29 |
| GB2107311B (en) | 1986-01-29 |
| IT8124526A0 (it) | 1981-10-16 |
| FR2514758A1 (fr) | 1983-04-22 |
| ES516549A0 (es) | 1984-05-01 |
| DE3228594A1 (de) | 1983-04-28 |
| IN157310B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1986-03-01 |
| AR230620A1 (es) | 1984-05-31 |
| FR2514758B1 (fr) | 1985-07-05 |
| SU1428191A3 (ru) | 1988-09-30 |
| ES8404676A1 (es) | 1984-05-01 |
| US4670588A (en) | 1987-06-02 |
| JPS5883666A (ja) | 1983-05-19 |
| NL8203258A (nl) | 1983-05-16 |
| GB2107311A (en) | 1983-04-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |