GB1184004A - Process for the Production of Urea having a Low Carbamate Content - Google Patents
Process for the Production of Urea having a Low Carbamate ContentInfo
- Publication number
- GB1184004A GB1184004A GB30814/68A GB3081468A GB1184004A GB 1184004 A GB1184004 A GB 1184004A GB 30814/68 A GB30814/68 A GB 30814/68A GB 3081468 A GB3081468 A GB 3081468A GB 1184004 A GB1184004 A GB 1184004A
- Authority
- GB
- United Kingdom
- Prior art keywords
- urea
- excess
- solution
- synthesis zone
- gaseous
- 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
Links
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title abstract 5
- 239000004202 carbamide Substances 0.000 title abstract 5
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- KXDHJXZQYSOELW-UHFFFAOYSA-M Carbamate Chemical compound NC([O-])=O KXDHJXZQYSOELW-UHFFFAOYSA-M 0.000 title 1
- 230000015572 biosynthetic process Effects 0.000 abstract 5
- 238000003786 synthesis reaction Methods 0.000 abstract 5
- BVCZEBOGSOYJJT-UHFFFAOYSA-N ammonium carbamate Chemical compound [NH4+].NC([O-])=O BVCZEBOGSOYJJT-UHFFFAOYSA-N 0.000 abstract 3
- KXDHJXZQYSOELW-UHFFFAOYSA-N carbonic acid monoamide Natural products NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 abstract 3
- 238000000354 decomposition reaction Methods 0.000 abstract 3
- 239000007795 chemical reaction product Substances 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 2
- 239000010408 film Substances 0.000 abstract 1
- 239000000047 product Substances 0.000 abstract 1
- 238000004064 recycling Methods 0.000 abstract 1
- 238000002317 scanning near-field acoustic microscopy Methods 0.000 abstract 1
- 239000010409 thin film 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J17/00—Gas-filled discharge tubes with solid cathode
- H01J17/02—Details
- H01J17/04—Electrodes; Screens
- H01J17/06—Cathodes
- H01J17/066—Cold cathodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0064—Tubes with cold main electrodes (including cold cathodes)
- H01J2893/0065—Electrode systems
- H01J2893/0066—Construction, material, support, protection and temperature regulation of electrodes; Electrode cups
-
- 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
- Y02P20/141—Feedstock
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT2102767 | 1967-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1184004A true GB1184004A (en) | 1970-03-11 |
Family
ID=11175595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB30814/68A Expired GB1184004A (en) | 1967-09-29 | 1968-06-27 | Process for the Production of Urea having a Low Carbamate Content |
Country Status (15)
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4208347A (en) * | 1977-05-05 | 1980-06-17 | Montedison S.P.A. | Process for the synthesis of urea |
| EP0002298B1 (en) * | 1977-11-30 | 1981-01-21 | Unie Van Kunstmestfabrieken B.V. | Process and apparatus for the removal of ammonium carbamate from a urea-synthesis solution |
| US4899813A (en) * | 1984-04-20 | 1990-02-13 | Snamprogetti S.P.A. | Process and apparatus for the synthesis of urea and material used in it |
| EP0727414A1 (en) | 1995-02-16 | 1996-08-21 | SNAMPROGETTI S.p.A. | High yield process for urea synthesis |
| WO2013104638A1 (en) | 2012-01-09 | 2013-07-18 | Saipem S.P.A | Process for the synthesis of urea comprising a passivation stream at the stripper bottom |
| WO2023121443A1 (en) | 2021-12-20 | 2023-06-29 | Stamicarbon B.V. | Thermal stripping urea production |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IN169678B (enrdf_load_stackoverflow) * | 1987-08-13 | 1991-11-30 | Austral Pacific Fertilizers |
-
1968
- 1968-06-21 AT AT598768A patent/AT290545B/de not_active IP Right Cessation
- 1968-06-21 DK DK296968AA patent/DK118396B/da unknown
- 1968-06-21 NO NO2461/68A patent/NO145949C/no unknown
- 1968-06-25 NL NL6808895.A patent/NL161137C/xx not_active IP Right Cessation
- 1968-06-27 GB GB30814/68A patent/GB1184004A/en not_active Expired
- 1968-06-28 SE SE6808922A patent/SE373574B/xx unknown
- 1968-06-28 DE DE19681768776 patent/DE1768776B2/de not_active Ceased
- 1968-07-08 JP JP4720368A patent/JPS5432767B1/ja active Pending
- 1968-07-25 IE IE894/68A patent/IE32209B1/xx unknown
- 1968-08-01 LU LU56630D patent/LU56630A1/xx unknown
- 1968-08-02 FR FR1576811D patent/FR1576811A/fr not_active Expired
- 1968-08-02 BE BE719035D patent/BE719035A/xx not_active IP Right Cessation
- 1968-08-03 CH CH1166268A patent/CH487855A/fr not_active IP Right Cessation
- 1968-09-16 CS CS686495A patent/CS155191B2/cs unknown
- 1968-09-25 ES ES358855A patent/ES358855A1/es not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4208347A (en) * | 1977-05-05 | 1980-06-17 | Montedison S.P.A. | Process for the synthesis of urea |
| EP0002298B1 (en) * | 1977-11-30 | 1981-01-21 | Unie Van Kunstmestfabrieken B.V. | Process and apparatus for the removal of ammonium carbamate from a urea-synthesis solution |
| US4899813A (en) * | 1984-04-20 | 1990-02-13 | Snamprogetti S.P.A. | Process and apparatus for the synthesis of urea and material used in it |
| EP0727414A1 (en) | 1995-02-16 | 1996-08-21 | SNAMPROGETTI S.p.A. | High yield process for urea synthesis |
| WO2013104638A1 (en) | 2012-01-09 | 2013-07-18 | Saipem S.P.A | Process for the synthesis of urea comprising a passivation stream at the stripper bottom |
| US9199926B2 (en) | 2012-01-09 | 2015-12-01 | Saipem S.P.A. | Process for the synthesis of urea comprising a passivation stream at the stripper bottom |
| WO2023121443A1 (en) | 2021-12-20 | 2023-06-29 | Stamicarbon B.V. | Thermal stripping urea production |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1768776B2 (de) | 1973-05-03 |
| CH487855A (fr) | 1970-03-31 |
| BE719035A (enrdf_load_stackoverflow) | 1969-01-16 |
| LU56630A1 (enrdf_load_stackoverflow) | 1968-11-14 |
| DE1768776A1 (de) | 1971-09-16 |
| NO145949B (no) | 1982-03-22 |
| AT290545B (de) | 1971-06-11 |
| IE32209B1 (en) | 1973-05-16 |
| NL6808895A (enrdf_load_stackoverflow) | 1969-04-01 |
| CS155191B2 (en) | 1974-05-30 |
| IE32209L (en) | 1969-03-29 |
| SE373574B (sv) | 1975-02-10 |
| ES358855A1 (es) | 1970-05-16 |
| NO145949C (no) | 1982-06-30 |
| DK118396B (da) | 1970-08-17 |
| NL161137C (nl) | 1980-01-15 |
| JPS5432767B1 (enrdf_load_stackoverflow) | 1979-10-16 |
| FR1576811A (enrdf_load_stackoverflow) | 1969-08-01 |
| NL161137B (nl) | 1979-08-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE20 | Patent expired after termination of 20 years |