IE34603L - Producing urea - Google Patents
Producing ureaInfo
- Publication number
- IE34603L IE34603L IE700413A IE41370A IE34603L IE 34603 L IE34603 L IE 34603L IE 700413 A IE700413 A IE 700413A IE 41370 A IE41370 A IE 41370A IE 34603 L IE34603 L IE 34603L
- Authority
- IE
- Ireland
- Prior art keywords
- aqueous solution
- urea
- reaction vessel
- gaseous phase
- pressure
- Prior art date
Links
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title abstract 3
- 239000004202 carbamide Substances 0.000 title abstract 3
- 239000007864 aqueous solution Substances 0.000 abstract 4
- 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
- 238000006243 chemical reaction Methods 0.000 abstract 2
- 238000000354 decomposition reaction Methods 0.000 abstract 2
- 239000007792 gaseous phase Substances 0.000 abstract 2
- 238000000034 method Methods 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
- 239000012530 fluid Substances 0.000 abstract 1
- 239000011261 inert gas Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000002317 scanning near-field acoustic microscopy Methods 0.000 abstract 1
- 239000007858 starting material 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
- C07C273/14—Separation; Purification; Stabilisation; Use of additives
- C07C273/16—Separation; Purification
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
1292515 Urea SNAM PROGETTI SpA 19 March 1970 [4 April 1969] 13413/70 Heading C2C A process for the production of an aqueous solution of urea comprises reacting ammonia and carbon dioxide in a reaction vessel and allowing the resulting aqueous solution to flow as a film down a heated surface in a decomposition chamber to cause removal of the volatile products and starting materials from the aqueous solution as a gaseous phase, which gaseous phase flows countercurrently to the aqueous solution, the pressure in the decomposition chamber being lower than that in the reaction vessel. The countercurrent flow may be assisted by passing a stripping fluid in the form of an inert gas over the film. The process is preferably carried out at a temperature of from 50‹ to 250‹ C. at a pressure of from 0.1 to 250 atmospheres.
[GB1292515A]
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT1507269 | 1969-04-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE34603L true IE34603L (en) | 1970-10-04 |
| IE34603B1 IE34603B1 (en) | 1975-06-25 |
Family
ID=11146229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE413/70A IE34603B1 (en) | 1969-04-04 | 1970-04-03 | Process for producing urea |
Country Status (17)
| Country | Link |
|---|---|
| JP (1) | JPS5238017B1 (en) |
| AT (1) | AT305304B (en) |
| BE (1) | BE747769A (en) |
| BR (1) | BR7017988D0 (en) |
| CA (1) | CA949918A (en) |
| CH (1) | CH514555A (en) |
| CS (1) | CS152471B2 (en) |
| DE (1) | DE2015781B2 (en) |
| ES (1) | ES378592A1 (en) |
| FR (1) | FR2042135A5 (en) |
| GB (1) | GB1292515A (en) |
| IE (1) | IE34603B1 (en) |
| LU (1) | LU60616A1 (en) |
| NL (1) | NL7004886A (en) |
| RO (1) | RO69432A (en) |
| YU (1) | YU35113B (en) |
| ZM (1) | ZM3570A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1209532B (en) * | 1984-04-20 | 1989-08-30 | Snam Progetti | PROCESS FOR THE SYNTHESIS OF UREA AND MATERIAL USED IN ITSELF. |
| JP3259661B2 (en) * | 1997-06-27 | 2002-02-25 | 株式会社イトーキクレビオ | Panel body connection device |
| ITMI20120013A1 (en) | 2012-01-09 | 2013-07-10 | Saipem Spa | PROCEDURE FOR THE SYNTHESIS OF UREA INCLUDING A STRIPPER FUND OF PASSIVATION |
| DE102019208859A1 (en) | 2019-06-18 | 2020-12-24 | Skw Stickstoffwerke Piesteritz Gmbh | Process for the continuous production of pure urea solutions by utilizing process water |
-
1970
- 1970-03-19 FR FR7009891A patent/FR2042135A5/fr not_active Expired
- 1970-03-19 GB GB03413/70A patent/GB1292515A/en not_active Expired
- 1970-03-20 BE BE747769D patent/BE747769A/en not_active IP Right Cessation
- 1970-03-26 ZM ZM35/70A patent/ZM3570A1/en unknown
- 1970-03-27 LU LU60616D patent/LU60616A1/xx unknown
- 1970-03-27 AT AT2890/70A patent/AT305304B/en not_active IP Right Cessation
- 1970-03-31 CH CH470570A patent/CH514555A/en not_active IP Right Cessation
- 1970-03-31 YU YU852/70A patent/YU35113B/en unknown
- 1970-04-01 CA CA078,921A patent/CA949918A/en not_active Expired
- 1970-04-02 DE DE19702015781 patent/DE2015781B2/en not_active Ceased
- 1970-04-02 CS CS2186A patent/CS152471B2/cs unknown
- 1970-04-03 BR BR217988/70A patent/BR7017988D0/en unknown
- 1970-04-03 RO RO7062975A patent/RO69432A/en unknown
- 1970-04-03 JP JP45027937A patent/JPS5238017B1/ja active Pending
- 1970-04-03 IE IE413/70A patent/IE34603B1/en unknown
- 1970-04-03 ES ES378592A patent/ES378592A1/en not_active Expired
- 1970-04-06 NL NL7004886A patent/NL7004886A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ES378592A1 (en) | 1972-06-16 |
| NL7004886A (en) | 1970-10-06 |
| BE747769A (en) | 1970-08-31 |
| BR7017988D0 (en) | 1973-04-12 |
| CS152471B2 (en) | 1973-12-19 |
| IE34603B1 (en) | 1975-06-25 |
| CH514555A (en) | 1971-10-31 |
| GB1292515A (en) | 1972-10-11 |
| FR2042135A5 (en) | 1971-02-05 |
| DE2015781A1 (en) | 1970-10-08 |
| JPS5238017B1 (en) | 1977-09-27 |
| YU85270A (en) | 1979-12-31 |
| ZM3570A1 (en) | 1971-07-22 |
| YU35113B (en) | 1980-09-25 |
| RO69432A (en) | 1980-12-30 |
| DE2015781B2 (en) | 1973-05-03 |
| CA949918A (en) | 1974-06-25 |
| LU60616A1 (en) | 1970-05-28 |
| AT305304B (en) | 1973-01-15 |
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