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AR026497A1 - Procedimiento para la purificacion de la melamina - Google Patents

Procedimiento para la purificacion de la melamina

Info

Publication number
AR026497A1
AR026497A1 ARP000106046A ARP000106046A AR026497A1 AR 026497 A1 AR026497 A1 AR 026497A1 AR P000106046 A ARP000106046 A AR P000106046A AR P000106046 A ARP000106046 A AR P000106046A AR 026497 A1 AR026497 A1 AR 026497A1
Authority
AR
Argentina
Prior art keywords
melamine
solution
products
purification
subjecting
Prior art date
Application number
ARP000106046A
Other languages
English (en)
Original Assignee
Eurotecnica Group S A Swiss Br
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 Eurotecnica Group S A Swiss Br filed Critical Eurotecnica Group S A Swiss Br
Publication of AR026497A1 publication Critical patent/AR026497A1/es

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
    • C07D251/62—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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Phenolic Resins Or Amino Resins (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

Un procedimiento para la purificacion de la melamina, que deriva de la urea, de acuerdo con un procedimiento no catalítico de alta presion, por medio de latransformacion de los policondensados y otros subproductos, dichos subproductos derivan de la s íntesis de la melamina, que comprende los siguientes pasos:disolver en agua la melamina en bruto líquida que contiene policondensados y otros subproductos de la síntesis de la melamina; someter dicha solucion a untratamiento que tenga la capacidad de eliminar el CO2 disuelto, limitando su concentracion a un valor por debajo del 0,5% en peso; someter dicha solucion demelamina en bruto a la accion del amoníaco en un nivel dentro de la escala de entre 5 y 25% en peso a una temperatura dentro de la escala de 100 a 250 degree C, ydejar que la mezcla reaccione durante unos minutos; recuperar una solucion que tiene una conentracion de policondensados inferior a 1.000 ppm, típicamente pordebajo de 100 ppm.
ARP000106046A 1999-11-16 2000-11-16 Procedimiento para la purificacion de la melamina AR026497A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1999MI002388A IT1315255B1 (it) 1999-11-16 1999-11-16 Procedimento di purificazione della melammina.

Publications (1)

Publication Number Publication Date
AR026497A1 true AR026497A1 (es) 2003-02-12

Family

ID=11383963

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP000106046A AR026497A1 (es) 1999-11-16 2000-11-16 Procedimiento para la purificacion de la melamina

Country Status (16)

Country Link
US (1) US6774234B1 (es)
EP (1) EP1230226B1 (es)
CN (1) CN1263747C (es)
AR (1) AR026497A1 (es)
AT (1) ATE424389T1 (es)
AU (1) AU1883701A (es)
DE (1) DE60041709D1 (es)
EA (1) EA005007B1 (es)
EG (1) EG22361A (es)
ES (1) ES2323847T3 (es)
IT (1) IT1315255B1 (es)
MY (1) MY123710A (es)
PL (1) PL200104B1 (es)
SA (1) SA00210626B1 (es)
TW (1) TW521074B (es)
WO (1) WO2001036397A1 (es)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030028020A1 (en) * 2001-07-27 2003-02-06 Gupta Ram B. Process for the synthesis of high purity melamine
PL209035B1 (pl) 2001-11-16 2011-07-29 Ami Agrolinz Melamine Int Gmbh Sposób wytwarzania melaminy pozbawionej melemu oraz bezprzeponowa chłodnica do stosowania tego sposobu
DE102006055571B4 (de) 2006-11-20 2018-09-27 Urea Casale S.A. Verfahren und Vorrichtung zur Aufarbeitung einer Melaminschmelze
EP2098516A1 (en) * 2008-03-04 2009-09-09 Urea Casale S.A. Process for the production of high purity melamine from urea
ITMI20080861A1 (it) * 2008-05-13 2009-11-14 Eurotecnica Melamine Luxembourg Processo migliorato per la purificazione della melammina e relativa apparecchiatura
RU2417992C2 (ru) * 2009-07-20 2011-05-10 Открытое акционерное общество "Научно-исследовательский и проектный институт карбамида и продуктов органического синтеза" (ОАО "НИИК") Способ получения меламина и способ удаления растворенных газов из водного раствора неочищенного меламина
IT1403101B1 (it) * 2010-12-15 2013-10-04 Eurotecnica Melamine Luxemburg Zweigniederlassung In Ittigen Uso di urea contenente formaldeide in un procedimento per la produzione di melammina mediante pirolisi dell'urea e relativo procedimento per la produzione di melammina
RU2495876C1 (ru) * 2012-09-10 2013-10-20 Открытое Акционерное Общество "Научно-Исследовательский И Проектный Институт Карбамида И Продуктов Органического Синтеза" (Оао Ниик) Способ очистки меламина
CN105709675B (zh) * 2014-12-11 2020-04-10 欧洲技术设于伊特根的三聚氰氨-卢森堡-分支机构 用于生产三聚氰胺的设备的后反应器及相关方法
IT201800007367A1 (it) * 2018-07-20 2020-01-20 Procedimento a basso consumo energetico e ridotto consumo di ammoniaca per la produzione di melammina a elevata purezza tramite pirolisi dell’urea, e relativo impianto

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3161638A (en) * 1964-12-15 Filter
NL161750C (nl) * 1968-11-16 1980-03-17 Stamicarbon Werkwijze voor het afscheiden van melamine uit een gasvormig reactiemengsel van melamine, ammoniak en kooldioxyde.
US3637686A (en) * 1969-02-10 1972-01-25 Nissan Chemical Ind Ltd Process for recovering purified melamine
NL8201479A (nl) 1982-04-07 1983-11-01 Stamicarbon Werkwijze voor het bereiden van melamine.
NL9002606A (nl) * 1990-11-29 1992-06-16 Stamicarbon Proces voor de bereiding van melamine uit ureum.
IT1261841B (it) 1993-08-23 1996-06-03 Conser Spa Procedimento per la produzione di melammina ad alta purezza.
US5384404A (en) * 1993-11-05 1995-01-24 Lee; Jing M. Process for manufacturing melamine from urea
AT402294B (de) * 1994-12-23 1997-03-25 Agrolinz Melamin Gmbh Verfahren zur herstellung von hochreinem melamin
AT402296B (de) * 1995-02-03 1997-03-25 Agrolinz Melamin Gmbh Verfahren zur reinigung von melamin
NL1010316C2 (nl) * 1998-10-14 1999-09-23 Dsm Nv Werkwijze voor de bereiding van melamine.

Also Published As

Publication number Publication date
PL200104B1 (pl) 2008-12-31
EA005007B1 (ru) 2004-10-28
WO2001036397A1 (en) 2001-05-25
MY123710A (en) 2006-05-31
EP1230226B1 (en) 2009-03-04
ITMI992388A0 (it) 1999-11-16
IT1315255B1 (it) 2003-02-03
EG22361A (en) 2002-12-31
DE60041709D1 (de) 2009-04-16
EA200200570A1 (ru) 2002-12-26
AU1883701A (en) 2001-05-30
EP1230226A1 (en) 2002-08-14
US6774234B1 (en) 2004-08-10
SA00210626B1 (ar) 2006-11-19
PL355580A1 (en) 2004-05-04
ES2323847T3 (es) 2009-07-27
ITMI992388A1 (it) 2001-05-16
CN1407974A (zh) 2003-04-02
ATE424389T1 (de) 2009-03-15
CN1263747C (zh) 2006-07-12
TW521074B (en) 2003-02-21

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