NO20054334L - Fremgangsmate for a krystallisere en melaminsmelte - Google Patents

Fremgangsmate for a krystallisere en melaminsmelte

Info

Publication number
NO20054334L
NO20054334L NO20054334A NO20054334A NO20054334L NO 20054334 L NO20054334 L NO 20054334L NO 20054334 A NO20054334 A NO 20054334A NO 20054334 A NO20054334 A NO 20054334A NO 20054334 L NO20054334 L NO 20054334L
Authority
NO
Norway
Prior art keywords
melamine
melt
melamine melt
crystallizing
particles
Prior art date
Application number
NO20054334A
Other languages
English (en)
Other versions
NO20054334D0 (no
Inventor
Tjay Tjien Tjioe
Original Assignee
Dsm Ip Assets 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 Dsm Ip Assets Bv filed Critical Dsm Ip Assets Bv
Publication of NO20054334D0 publication Critical patent/NO20054334D0/no
Publication of NO20054334L publication Critical patent/NO20054334L/no

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
    • B01J19/06—Solidifying liquids
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Phenolic Resins Or Amino Resins (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)

Abstract

Fremgangsmåte for å krystallisere en melaminsmelte for å danne melaminpartikler med en D90 på maksimalt 2 mm ved å avkjøle en melaminsmelte til under krystalliserings-temperaturen av melaminet, omfattende dannelsen av en suspensjon av melaminpartikler i kjølemediet ved å spraye me-laminsmelten med maksimalt 10 vekt% av C02 i forhold til den sprayede mengden av melaminsmelte i et rom i hvilket et lag av flytende kjølemedium er til stede som har en temperatur under krystalliseringstemperaturen av melaminet og under kjølebetingelser ved hvilke minst 50 vekt% av den sprayede melaminsmelten direkte omdannes til suspenderte melaminpartikler. Fremgangsmåte ved fremstilling av melamin fra urea i en fortrinnsvis kontinuerlig, høytrykksprosess, med anvendelse av foreliggende fremgangmåte for krystalli-seringen.
NO20054334A 2003-02-24 2005-09-20 Fremgangsmate for a krystallisere en melaminsmelte NO20054334L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1022764A NL1022764C2 (nl) 2003-02-24 2003-02-24 Natte quench.
PCT/NL2004/000062 WO2004074265A1 (en) 2003-02-24 2004-01-28 Method for crystallising a melamine melt

Publications (2)

Publication Number Publication Date
NO20054334D0 NO20054334D0 (no) 2005-09-20
NO20054334L true NO20054334L (no) 2005-11-23

Family

ID=32906723

Family Applications (1)

Application Number Title Priority Date Filing Date
NO20054334A NO20054334L (no) 2003-02-24 2005-09-20 Fremgangsmate for a krystallisere en melaminsmelte

Country Status (15)

Country Link
US (1) US7361217B2 (no)
EP (1) EP1597241A1 (no)
JP (1) JP2006518733A (no)
KR (1) KR20050106034A (no)
CN (1) CN100406445C (no)
AU (1) AU2004213334A1 (no)
CA (1) CA2514051A1 (no)
EA (1) EA007960B1 (no)
MX (1) MXPA05008958A (no)
MY (1) MY136747A (no)
NL (1) NL1022764C2 (no)
NO (1) NO20054334L (no)
PL (1) PL377526A1 (no)
SA (1) SA04250014B1 (no)
WO (1) WO2004074265A1 (no)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007000176A1 (en) * 2005-06-28 2007-01-04 Casale Chemicals S.A. Process for gently cooling and crystallizing melamine from a melamine melt or from the gaseous phase
DE102006047068A1 (de) * 2006-09-26 2008-03-27 Ami-Agrolinz Melamine International Gmbh Ventil zum Einspeisen von Lösungen in Kristallisationsanlagen
CN115944942B (zh) * 2022-12-06 2024-04-12 四川金象赛瑞化工股份有限公司 一种氰胺类物质的制备方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3637686A (en) * 1969-02-10 1972-01-25 Nissan Chemical Ind Ltd Process for recovering purified melamine
US5384440A (en) 1992-12-17 1995-01-24 United Technologies Automotive, Inc. Automotive seat switch assembly
US5384404A (en) 1993-11-05 1995-01-24 Lee; Jing M. Process for manufacturing melamine from urea
US5514796A (en) * 1995-06-07 1996-05-07 Melamine Chemicals, Inc. Melamine of improved purity produced by high-pressure, non-catalytic process
NL1008571C2 (nl) * 1998-03-12 1999-07-28 Dsm Nv Kristallijn melamine.
EP1035117A1 (en) * 1999-03-08 2000-09-13 Dsm N.V. Method for preparing melamine from urea
NL1013456C2 (nl) * 1999-11-02 2001-05-03 Dsm Nv Kristallijn melamine en de toepassing in aminoformaldehydeharsen.
EP1138676A1 (en) * 2000-03-27 2001-10-04 Casale Chemicals SA Process for producing melamine at high pureness
DE10030453B4 (de) * 2000-06-21 2007-07-12 Faramarz Bairamijamal Verfahren zur Herstellung von hoch reinem Melamin nach trockener Aufbereitung
AU2002351684B2 (en) * 2001-11-16 2008-02-07 Ami-Agrolinz Melamine International Gmbh Method for producing melem-free melamine and quenching agents

Also Published As

Publication number Publication date
WO2004074265A1 (en) 2004-09-02
PL377526A1 (pl) 2006-02-06
CN100406445C (zh) 2008-07-30
KR20050106034A (ko) 2005-11-08
NO20054334D0 (no) 2005-09-20
JP2006518733A (ja) 2006-08-17
CA2514051A1 (en) 2004-09-02
MY136747A (en) 2008-11-28
US20060112872A1 (en) 2006-06-01
AU2004213334A8 (en) 2004-09-02
EP1597241A1 (en) 2005-11-23
NL1022764C2 (nl) 2004-08-26
SA04250014B1 (ar) 2009-02-25
AU2004213334A1 (en) 2004-09-02
MXPA05008958A (es) 2005-11-04
US7361217B2 (en) 2008-04-22
EA007960B1 (ru) 2007-02-27
CN1802359A (zh) 2006-07-12
EA200501343A1 (ru) 2006-02-24

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