EP 1515957 A1 20050323 - METHOD AND DEVICE FOR THE RECOVERY OF MELAMINE BY EXPANSION

Title (en)

METHOD AND DEVICE FOR THE RECOVERY OF MELAMINE BY EXPANSION

Title (de)

VERFAHREN UND VORRICHTUNG ZUR RÜCKGEWINNUNG VON MELAMIN DURCH EXPANSION

Title (fr)

PROCEDE ET DISPOSITIF DE RECUPERATION DE MELANINE PAR DETENTE A PARTIR DE SES MELANGES CRUS PRODUITS DANS LE PROCESSUS DE PYROLYSE DE L'UREE

Publication

EP 1515957 A1 20050323 (EN)

Application

EP 03761570 A 20030626

Priority

EP 0306990 W 20030626
IT MI20021422 A 20020627

Abstract (en)

[origin: WO2004002966A1] Treatment of the pyrolysis product of urea to melamine, in one or more expansion and cooling steps to separate the offgas and recover the melamine in solution/suspension, carried out by expanding the product under a liquid seal, to prevent the melamine crystals in formation from adhering to the internal walls of the equipment.

IPC 1-7

C07D 251/60; C07D 251/56; B01J 4/00; B01J 8/00

IPC 8 full level

B01J 19/00 (2006.01); B01J 19/18 (2006.01); C07D 251/56 (2006.01); C07D 251/60 (2006.01)

CPC (source: EP)

B01J 19/0013 (2013.01); B01J 19/1806 (2013.01); C07D 251/56 (2013.01); C07D 251/60 (2013.01); B01J 2219/00121 (2013.01); B01J 2219/00252 (2013.01)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

DOCDB simple family (publication)

WO 2004002966 A1 20040108; AU 2003246347 A1 20040119; CN 1295220 C 20070117; CN 1665794 A 20050907; EP 1515957 A1 20050323; IT MI20021422 A0 20020627; IT MI20021422 A1 20031229

DOCDB simple family (application)

EP 0306990 W 20030626; AU 2003246347 A 20030626; CN 03815148 A 20030626; EP 03761570 A 20030626; IT MI20021422 A 20020627