BE654962A - - Google Patents

Info

Publication number
BE654962A
BE654962A BE654962DA BE654962A BE 654962 A BE654962 A BE 654962A BE 654962D A BE654962D A BE 654962DA BE 654962 A BE654962 A BE 654962A
Authority
BE
Belgium
Application number
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
Priority claimed from US401535A external-priority patent/US3265233A/en
Application filed filed Critical
Publication of BE654962A publication Critical patent/BE654962A/xx

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
    • C07D251/60—Preparation of melamine from urea or from carbon dioxide and ammonia
    • 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
    • C07D251/62—Purification of melamine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/40—Nitrogen compounds
    • B01D2257/406—Ammonia
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/50—Carbon oxides
    • B01D2257/504—Carbon dioxide
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Treating Waste Gases (AREA)
BE654962D 1964-10-05 1964-10-28 BE654962A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US401535A US3265233A (en) 1964-10-05 1964-10-05 Container and safety closure construction
US401555A US3315442A (en) 1964-10-05 1964-10-05 Quenching of crude melamine gases

Publications (1)

Publication Number Publication Date
BE654962A true BE654962A (ja) 1965-04-28

Family

ID=27017500

Family Applications (1)

Application Number Title Priority Date Filing Date
BE654962D BE654962A (ja) 1964-10-05 1964-10-28

Country Status (9)

Country Link
US (1) US3315442A (ja)
AT (1) AT278019B (ja)
BE (1) BE654962A (ja)
CH (1) CH467276A (ja)
DE (1) DE1445462A1 (ja)
GB (1) GB1075294A (ja)
NL (1) NL6412642A (ja)
NO (1) NO115078B (ja)
SE (1) SE302769B (ja)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL282311A (ja) * 1964-01-14
DE2317603C3 (de) * 1973-04-07 1982-03-25 Basf Ag, 6700 Ludwigshafen Verfahren zur zumindest teilweisen Trennung von Ammoniak und Kohlendioxid enthaltenden Gasgemischen
US3885928A (en) * 1973-06-18 1975-05-27 Standard Oil Co Ohio Acrylonitrile and methacrylonitrile recovery and purification system
DE2646804C3 (de) * 1976-10-16 1982-03-11 Basf Ag, 6700 Ludwigshafen Verfahren zur Gewinnung von reinem Ammoniak aus Ammoniak und Kohlendioxid enthaltenden Gasgemischen
NL168196C (nl) * 1976-11-03 1982-03-16 Stamicarbon Werkwijze voor het afscheiden van nh&013 en co&012 uit een mengsel van nh&013, co&012 en h&012o.
NL7804668A (nl) * 1978-04-29 1979-10-31 Stamicarbon Werkwijze voor het scheiden van nh3 en co2 uit meng- sels van nh3 ,co2 en water.
JPS58124528A (ja) * 1982-01-21 1983-07-25 Ise Kagaku Kogyo Kk 昇華性物質の球状化物、その製法及び製造装置
US4565867A (en) * 1984-01-05 1986-01-21 Melamine Chemicals, Inc. Anhydrous high-pressure melamine synthesis
AT397214B (de) * 1992-03-30 1994-02-25 Chemie Linz Gmbh Vorrichtung zur abscheidung von melamin
DE4211763A1 (de) * 1992-04-08 1993-10-14 Chemie Linz Deutschland Vorrichtung zur Abscheidung von Melamin
ITMI20021026A1 (it) * 2002-05-14 2003-11-14 Eurotecnica Dev & Licensing S Processo di produzione di melammina da urea e particolarmente per ottenere off-gas privi di melammina nello stadio di prima separazione

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2755887A (en) * 1956-07-24 Melamine purification
US3132143A (en) * 1964-05-05 Process for recovering melamine

Also Published As

Publication number Publication date
CH467276A (de) 1969-01-15
AT278019B (de) 1970-01-26
SE302769B (ja) 1968-08-05
US3315442A (en) 1967-04-25
NO115078B (ja) 1968-07-22
GB1075294A (en) 1967-07-12
NL6412642A (ja) 1966-04-06
DE1445462A1 (de) 1969-02-20

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