ES285797A1 - A procedure to recover melamine from a hot gas mixture that contains it (Machine-translation by Google Translate, not legally binding) - Google Patents

A procedure to recover melamine from a hot gas mixture that contains it (Machine-translation by Google Translate, not legally binding)

Info

Publication number
ES285797A1
ES285797A1 ES285797A ES285797A ES285797A1 ES 285797 A1 ES285797 A1 ES 285797A1 ES 285797 A ES285797 A ES 285797A ES 285797 A ES285797 A ES 285797A ES 285797 A1 ES285797 A1 ES 285797A1
Authority
ES
Spain
Prior art keywords
melamine
gas mixture
translation
water
machine
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
Application number
ES285797A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stamicarbon BV
Original Assignee
Stamicarbon BV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Stamicarbon BV filed Critical Stamicarbon BV
Publication of ES285797A1 publication Critical patent/ES285797A1/en
Expired legal-status Critical Current

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
    • C07D251/56—Preparation of melamine

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Treating Waste Gases (AREA)

Abstract

A method for recovering melamine from a hot gas mixture containing it which, beside melamine, contains mainly ammonia and carbon dioxide, in which process the gas mixture is cooled in direct contact with water in a cooling zone and the melamine it separates from the gas mixture and is discharged from the cooling zone, characterized in that the cooling is effected by contact with a virtually constant amount of water, predominantly by evaporation of a part of this water, and an amount of water is supplied which is equivalent to the amount that is lost by evaporation and by entrainment with the melamine discharged from the cooling zone, the gaseous mixture discharged from the cooling zone still containing at least 90% of the amount of ammonia supplied. (Machine-translation by Google Translate, not legally binding)
ES285797A 1962-03-08 1963-03-07 A procedure to recover melamine from a hot gas mixture that contains it (Machine-translation by Google Translate, not legally binding) Expired ES285797A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL275724 1962-03-08
NL286072 1962-11-28

Publications (1)

Publication Number Publication Date
ES285797A1 true ES285797A1 (en) 1963-08-01

Family

ID=26641824

Family Applications (1)

Application Number Title Priority Date Filing Date
ES285797A Expired ES285797A1 (en) 1962-03-08 1963-03-07 A procedure to recover melamine from a hot gas mixture that contains it (Machine-translation by Google Translate, not legally binding)

Country Status (5)

Country Link
BE (1) BE629244A (en)
CH (1) CH451175A (en)
DE (1) DE1204236B (en)
ES (1) ES285797A1 (en)
GB (1) GB1012819A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1215165B (en) * 1964-01-16 1966-04-28 Lentia Gmbh Method and device for the direct production of pure melamine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2918467A (en) * 1959-12-22 Production of melamine

Also Published As

Publication number Publication date
BE629244A (en) 1963-10-21
GB1012819A (en) 1965-12-08
CH451175A (en) 1968-05-15
DE1204236B (en) 1965-11-04

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