MXPA05008958A - Metodo para cristalizar melamina en estado fundido. - Google Patents

Metodo para cristalizar melamina en estado fundido.

Info

Publication number
MXPA05008958A
MXPA05008958A MXPA05008958A MXPA05008958A MXPA05008958A MX PA05008958 A MXPA05008958 A MX PA05008958A MX PA05008958 A MXPA05008958 A MX PA05008958A MX PA05008958 A MXPA05008958 A MX PA05008958A MX PA05008958 A MXPA05008958 A MX PA05008958A
Authority
MX
Mexico
Prior art keywords
melamine
melt
melamine melt
crystallising
particles
Prior art date
Application number
MXPA05008958A
Other languages
English (en)
Inventor
Tjay Tjen 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 MXPA05008958A publication Critical patent/MXPA05008958A/es

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
    • C07D251/62—Purification of melamine
    • 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)
  • 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

Un metodo para cristalizar melamina en estado fundido para formar particulas de melamina con un D90 de a lo sumo 2 mm enfriando la melamina en estado fundido a menos de la temperatura de cristalizacion de la melamina, que comprende la formacion de una suspension de particulas de melamina en el medio de enfriamiento, asperjando la melamina en estado fundido con un maximo de 10% en peso de CO2 relativo a la cantidad asperjada de melamina en estado fundido, en un espacio en el cual esta presente una capa de un medio de enfriamiento liquido que tiene una temperatura inferior a la temperatura de cristalizacion de la melamina, y bajo condiciones de enfriamiento en las cuales por lo menos el 50% en peso de la melamina asperjada en estado fundido se convierte directamente en particulas suspendidas de melamina; un metodo para la produccion de la melamina a partir de urea en un procedimiento a alta presion, de preferencia continuo, con la aplicacion del presente metodo para la cristalizacion.
MXPA05008958A 2003-02-24 2004-01-28 Metodo para cristalizar melamina en estado fundido. MXPA05008958A (es)

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 (1)

Publication Number Publication Date
MXPA05008958A true MXPA05008958A (es) 2005-11-04

Family

ID=32906723

Family Applications (1)

Application Number Title Priority Date Filing Date
MXPA05008958A MXPA05008958A (es) 2003-02-24 2004-01-28 Metodo para cristalizar melamina en estado fundido.

Country Status (15)

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

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
US7361217B2 (en) 2008-04-22
EA007960B1 (ru) 2007-02-27
NO20054334L (no) 2005-11-23
CN1802359A (zh) 2006-07-12
EA200501343A1 (ru) 2006-02-24

Similar Documents

Publication Publication Date Title
CN104493187B (zh) 一种水雾化制备金属粉末过程中的喷射雾化工艺
WO2006104925A3 (en) Metal powders and methods for producing the same
ES2000228A6 (es) Composicion a base de urea y metodo de mejorar las caracteristicas de la urea en forma de particulas
CN104511594A (zh) 一种改进型水雾法生产铜合金粉的工艺
EG24530A (en) Granules of powdery mineral and method for production of granules
CN205650809U (zh) 一种水雾化制粉装置
TW200631971A (en) Process for producing aggregated latex particle
MX2009005580A (es) Particulas estables de lactido.
MXPA05008958A (es) Metodo para cristalizar melamina en estado fundido.
MY144193A (en) Process for isolating methylglycinenitrile-n, n-diacetonitriles from an aqueous crude mixture
NO20053132D0 (no) Fremgangsmate for produksjon av silika fra olivin.
CA2608684A1 (en) Upward-flow manganese contact column
CN105968086A (zh) Ada的合成方法
RU2013145236A (ru) Способ и устройство для получения гранулированной мочевины в качестве продукта
CN212215420U (zh) 一种稳定控制硝酸铵钙造粒的生产系统
US20130125586A1 (en) Proppants from mineralogical material
CN103406510A (zh) 一种非晶制带喷嘴包
CN103302279A (zh) 用于半钢罐罐口的防粘渣剂
CN100558927C (zh) 低合金消耗的热镀锌工艺
PL317428A1 (en) Beads containing an active component exhibiting undefined melting temperature and method of making such beads
ATE264848T1 (de) Verfahren zur herstellung von melamin
CN205532544U (zh) 油气井一体式喷嘴
RU2742933C2 (ru) Способ получения твердой мочевины гранулированием
CN204898040U (zh) 一种可快速降温的铝合金喷射沉积设备
CN108161371A (zh) 一种汽车零部件的制造方法

Legal Events

Date Code Title Description
FG Grant or registration