GB985953A - Method of producing melamine fom ammonia and carbon oxysulphide - Google Patents
Method of producing melamine fom ammonia and carbon oxysulphideInfo
- Publication number
- GB985953A GB985953A GB33046/62A GB3304662A GB985953A GB 985953 A GB985953 A GB 985953A GB 33046/62 A GB33046/62 A GB 33046/62A GB 3304662 A GB3304662 A GB 3304662A GB 985953 A GB985953 A GB 985953A
- Authority
- GB
- United Kingdom
- Prior art keywords
- carrier
- melamine
- ammonia
- moving
- fom
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D251/00—Heterocyclic compounds containing 1,3,5-triazine rings
- C07D251/02—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings
- C07D251/12—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
- C07D251/26—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hetero atoms directly attached to ring carbon atoms
- C07D251/40—Nitrogen atoms
- C07D251/54—Three nitrogen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D251/00—Heterocyclic compounds containing 1,3,5-triazine rings
- C07D251/02—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings
- C07D251/12—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
- C07D251/26—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hetero atoms directly attached to ring carbon atoms
- C07D251/40—Nitrogen atoms
- C07D251/54—Three nitrogen atoms
- C07D251/56—Preparation of melamine
- C07D251/60—Preparation of melamine from urea or from carbon dioxide and ammonia
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treating Waste Gases (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
Melamine is produced by charging a carrier of silica and/or alumina and/or activated carbon, preferably impregnated with 1 to 10% of phosphoric and/or sulphuric and/or boric acid, with ammonia and carbon oxysulphide in the volume ratio 2 to 3.5 : 1 at 60 DEG to 150 DEG C., heating the charged carrier to 250 DEG to 300 DEG C. in an ammonia atmosphere to form melamine and subliming the resulting melamine in an ammonia stream. The absorption phase may be effected at atmospheric or up to 10 atms-gauge pressure. The process may be made continuous by employing a number of phased reactors, or operating with a moving carrier countercurrent to gas flow, wherein the carrier moves through zones of suitable temperatures, or by moving the carrier through a trickling bed reactor for the changing cycle, to a rotary tube for reaction and fluidized bed for melamine desorption. Schematic diagrams are given (not shown) for such plant and the examples give details of their use.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1961S0075516 DE1141642B (en) | 1961-08-30 | 1961-08-30 | Process for the production of melamine from ammonia and carbon oxysulphide. |
Publications (1)
Publication Number | Publication Date |
---|---|
GB985953A true GB985953A (en) | 1965-03-10 |
Family
ID=7505410
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB33046/62A Expired GB985953A (en) | 1961-08-30 | 1962-08-28 | Method of producing melamine fom ammonia and carbon oxysulphide |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE621437A (en) |
CH (1) | CH415654A (en) |
DE (1) | DE1141642B (en) |
GB (1) | GB985953A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114939403A (en) * | 2022-06-14 | 2022-08-26 | 宁波中科远东催化工程技术有限公司 | Catalyst for producing melamine and preparation method and application thereof |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2557986A (en) * | 1951-06-26 | Preparation of melamine |
-
1961
- 1961-08-30 DE DE1961S0075516 patent/DE1141642B/en active Pending
-
1962
- 1962-07-27 CH CH905662A patent/CH415654A/en unknown
- 1962-08-16 BE BE621437A patent/BE621437A/en unknown
- 1962-08-28 GB GB33046/62A patent/GB985953A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114939403A (en) * | 2022-06-14 | 2022-08-26 | 宁波中科远东催化工程技术有限公司 | Catalyst for producing melamine and preparation method and application thereof |
CN114939403B (en) * | 2022-06-14 | 2024-01-26 | 宁波中科远东催化工程技术有限公司 | Catalyst for producing melamine and preparation method and application thereof |
Also Published As
Publication number | Publication date |
---|---|
DE1141642B (en) | 1962-12-27 |
BE621437A (en) | 1962-12-17 |
CH415654A (en) | 1966-06-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1000957A (en) | Process for reducing the concentration of mercury in hydrogen contaminated therewith | |
US3008796A (en) | Method of purifying gases containing oxygen and oxides of nitrogen | |
GB959770A (en) | Selective hydrogenation catalyst and the production thereof | |
ES428170A1 (en) | Process for absorbing SO{HD 3 | |
US2741543A (en) | Process for the production of deuterium oxide | |
GB1096871A (en) | Process for the recovery of gaseous sulphur compounds present in small quantities inresidual gases | |
GB985953A (en) | Method of producing melamine fom ammonia and carbon oxysulphide | |
GB1480549A (en) | Transport of heat energy | |
GB940960A (en) | Process for the catalytic conversion of carbon monoxide with steam to form hydrogen and carbon dioxide | |
JPS56161841A (en) | Manufacture of composite oxide catalyst | |
US3477830A (en) | Production of sinterable uranium dioxide | |
GB851977A (en) | A molecular sieve adsorption process | |
GB1151316A (en) | Improvements in or relating to a Claus Process | |
US3649169A (en) | Treatment of gases | |
ES464565A1 (en) | Catalytic reaction apparatus | |
US11390522B2 (en) | Process for conversion of sulfur trioxide and hydrogen production | |
GB1151398A (en) | Improvements in or relating to Claus Process | |
ES260137A1 (en) | Acrylonitrile recovery process | |
GB1022917A (en) | Process for the catalytic production of melamine from gaseous cyanic acid | |
ES429654A1 (en) | Production of reducing gas | |
NL6908934A (en) | Hydroxylamine preparation without commin - ution of catalyst | |
GB956002A (en) | Process for the manufacture of catalysts for the production of monomeric vinyl estersin the gaseous phase | |
GB1341607A (en) | Process for manufacturing anhydrous chromium sesquioxide vy reduction of a hexavalent compound of chromium | |
GB872256A (en) | Improvements in methods for treating fuel gases | |
GB949985A (en) | Process and apparatus for the production of vinyl chloride from acetylene-containing gases |