IE36076B1 - Method for processing at elevated temperature solutions containing ammonium carbamate - Google Patents
Method for processing at elevated temperature solutions containing ammonium carbamateInfo
- Publication number
- IE36076B1 IE36076B1 IE164/72A IE16472A IE36076B1 IE 36076 B1 IE36076 B1 IE 36076B1 IE 164/72 A IE164/72 A IE 164/72A IE 16472 A IE16472 A IE 16472A IE 36076 B1 IE36076 B1 IE 36076B1
- Authority
- IE
- Ireland
- Prior art keywords
- processing
- elevated temperature
- ammonium carbamate
- solutions containing
- weight
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/02—Apparatus characterised by being constructed of material selected for its chemically-resistant properties
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/02—Apparatus characterised by their chemically-resistant properties
- B01J2219/025—Apparatus characterised by their chemically-resistant properties characterised by the construction materials of the reactor vessel proper
- B01J2219/0277—Metal based
- B01J2219/0286—Steel
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Catalysts (AREA)
- Removal Of Specific Substances (AREA)
- Electroplating And Plating Baths Therefor (AREA)
Abstract
1333544 Urea; melamine STAMIOARBON NV 9 Feb 1972 [13 Feb 1971] 6155/72 Heading C2C In the synthesis of urea or melamine, the processing of the intermediate ammonium carbamate solution at elevated temperature is conducted in plant wherein at least the surfaces thereof which are in contact with the solution are made of a nickel-free ferritic steel consisting essentially of at least 25% by weight of chromium, from 0 to 3% by weight of molybdenum, and having a combined content of carbon plus nitrogen of not more than 0À035% by weight and the balance of iron.
[GB1333544A]
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NLAANVRAGE7101951,A NL169588C (en) | 1971-02-13 | 1971-02-13 | PROCESS FOR THE SOLUTIONS CONTAINING INCREASED AMMONIUM CARBAMATE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE36076L IE36076L (en) | 1972-08-13 |
| IE36076B1 true IE36076B1 (en) | 1976-08-04 |
Family
ID=19812478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE164/72A IE36076B1 (en) | 1971-02-13 | 1972-02-10 | Method for processing at elevated temperature solutions containing ammonium carbamate |
Country Status (20)
| Country | Link |
|---|---|
| AU (1) | AU463665B2 (en) |
| BE (1) | BE779258A (en) |
| BR (1) | BR7200837D0 (en) |
| CA (1) | CA966638A (en) |
| CS (1) | CS163267B2 (en) |
| DD (1) | DD95368A5 (en) |
| DE (1) | DE2206615B2 (en) |
| ES (1) | ES399672A1 (en) |
| FR (1) | FR2125445B1 (en) |
| GB (1) | GB1333544A (en) |
| HU (1) | HU173919B (en) |
| IE (1) | IE36076B1 (en) |
| IT (1) | IT948491B (en) |
| NL (1) | NL169588C (en) |
| NO (1) | NO137010C (en) |
| RO (1) | RO63301A (en) |
| SE (1) | SE387336B (en) |
| TR (1) | TR18774A (en) |
| ZA (1) | ZA72781B (en) |
| ZM (1) | ZM2772A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8304381A (en) * | 1983-12-21 | 1985-07-16 | Stamicarbon | METHOD AND APPARATUS FOR PREPARING MELAMINE |
| JPS63121641A (en) * | 1986-11-10 | 1988-05-25 | Nippon Yakin Kogyo Co Ltd | External coating of sheathed heater made of austenitic stainless steel |
| EP1921043B1 (en) * | 2006-11-01 | 2012-01-18 | Mitsubishi Gas Chemical Company, Inc. | Method of recovering ammonia and process for producing a nitrile compound making use of the ammonia recovery method |
| US11746084B2 (en) | 2019-07-05 | 2023-09-05 | Stamicarbon B.V. | Ferritic steel parts in urea plants |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1986973A (en) * | 1930-11-17 | 1935-01-08 | Du Pont | Prevention of corrosion in urea synthesis |
| US2129689A (en) * | 1936-12-04 | 1938-09-13 | Du Pont | Urea manufacture |
| US2183715A (en) * | 1938-05-21 | 1939-12-19 | Electro Metallurg Co | Corrosion resistant steel alloy |
| US2624671A (en) * | 1951-01-19 | 1953-01-06 | Union Carbide & Carbon Corp | Ferritic chromium steels |
| SE344969B (en) * | 1967-03-15 | 1972-05-08 | Du Pont |
-
1971
- 1971-02-13 TR TR18774A patent/TR18774A/en unknown
- 1971-02-13 NL NLAANVRAGE7101951,A patent/NL169588C/en not_active IP Right Cessation
-
1972
- 1972-02-07 ZA ZA720781A patent/ZA72781B/en unknown
- 1972-02-08 CA CA134,144A patent/CA966638A/en not_active Expired
- 1972-02-09 AU AU38813/72A patent/AU463665B2/en not_active Expired
- 1972-02-09 GB GB615572A patent/GB1333544A/en not_active Expired
- 1972-02-09 IT IT48234/72A patent/IT948491B/en active
- 1972-02-10 HU HU72SA2312A patent/HU173919B/en unknown
- 1972-02-10 IE IE164/72A patent/IE36076B1/en unknown
- 1972-02-10 SE SE7201605A patent/SE387336B/en unknown
- 1972-02-11 ZM ZM27/72*UA patent/ZM2772A1/en unknown
- 1972-02-11 DE DE2206615A patent/DE2206615B2/en not_active Withdrawn
- 1972-02-11 NO NO403/72A patent/NO137010C/en unknown
- 1972-02-11 DD DD160843A patent/DD95368A5/xx unknown
- 1972-02-11 BE BE779258A patent/BE779258A/en not_active IP Right Cessation
- 1972-02-11 ES ES399672A patent/ES399672A1/en not_active Expired
- 1972-02-11 BR BR837/72A patent/BR7200837D0/en unknown
- 1972-02-14 CS CS914A patent/CS163267B2/cs unknown
- 1972-02-14 FR FR7204826A patent/FR2125445B1/fr not_active Expired
- 1972-02-14 RO RO7200069761A patent/RO63301A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| DE2206615A1 (en) | 1972-08-31 |
| FR2125445A1 (en) | 1972-09-29 |
| NL169588C (en) | 1982-08-02 |
| NL169588B (en) | 1982-03-01 |
| GB1333544A (en) | 1973-10-10 |
| DE2206615B2 (en) | 1980-05-29 |
| BR7200837D0 (en) | 1973-06-21 |
| DD95368A5 (en) | 1973-02-05 |
| NL7101951A (en) | 1972-08-15 |
| IT948491B (en) | 1973-05-30 |
| ZA72781B (en) | 1972-10-25 |
| SE387336B (en) | 1976-09-06 |
| FR2125445B1 (en) | 1977-07-15 |
| AU463665B2 (en) | 1975-07-31 |
| NO137010B (en) | 1977-09-05 |
| ZM2772A1 (en) | 1973-02-21 |
| ES399672A1 (en) | 1976-05-01 |
| HU173919B (en) | 1979-09-28 |
| TR18774A (en) | 1977-08-23 |
| RO63301A (en) | 1978-07-15 |
| CA966638A (en) | 1975-04-29 |
| BE779258A (en) | 1972-08-11 |
| AU3881372A (en) | 1973-08-16 |
| IE36076L (en) | 1972-08-13 |
| NO137010C (en) | 1977-12-14 |
| CS163267B2 (en) | 1975-08-29 |
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