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1. KR1020070017929 - IMPROVING THE MELAMINE YIELD OF CATALYTIC MELAMINE PRODUCTION PROCESSES

Office République de Corée
Numéro de la demande 1020067002122
Date de la demande 31.01.2006
Numéro de publication 1020070017929
Date de publication 13.02.2007
Type de publication A
CIB
C CHIMIE; MÉTALLURGIE
07
CHIMIE ORGANIQUE
D
COMPOSÉS HÉTÉROCYCLIQUES
251
Composés hétérocycliques contenant des cycles triazine-1, 3, 5
02
non condensés avec d'autres cycles
12
comportant trois liaisons doubles entre chaînons cycliques ou entre chaînons cycliques et chaînons non cycliques
26
avec uniquement des hétéro-atomes liés directement aux atomes de carbone du cycle
40
Atomes d'azote
54
Trois atomes d'azote
62
Purification de la mélamine
C CHIMIE; MÉTALLURGIE
07
CHIMIE ORGANIQUE
D
COMPOSÉS HÉTÉROCYCLIQUES
251
Composés hétérocycliques contenant des cycles triazine-1, 3, 5
02
non condensés avec d'autres cycles
12
comportant trois liaisons doubles entre chaînons cycliques ou entre chaînons cycliques et chaînons non cycliques
26
avec uniquement des hétéro-atomes liés directement aux atomes de carbone du cycle
40
Atomes d'azote
54
Trois atomes d'azote
56
Préparation de la mélamine
60
à partir de l'urée ou à partir de gaz carbonique et d'ammoniac
C07D 251/62
C07D 251/60
CPC
C07D 251/62
C07D 251/60
B01J 21/04
Déposants CASALE CHEMICALS S.A.
카살레 케미칼스 에스.에이.
Inventeurs RIPPERGER WILLI
리페르거, 빌리
Mandataires 김영철
이준서
김 순 영
Données relatives à la priorité 10 2004 014 770.1 26.03.2004 DE
04000931.8 17.01.2004 EP
Titre
(EN) IMPROVING THE MELAMINE YIELD OF CATALYTIC MELAMINE PRODUCTION PROCESSES
(KO) 촉매적 멜라민 생산 공정의 멜라민 수득량을 향상시키는방법
Abrégé
(EN)

The process to increase the melamine yield and improving the dust separation in the melamine production from urea in fluidized-bed catalytic processes comprises transferring the process gas of the fluid-bed reactor, which contains besides melamine non- converted isocyanic acid, melam, melem and other higher molecular nitrogen compounds, into a filter-reactor which consists of one or more ring-reactors filled with catalysts, in which the not yet converted isocyanic acid is converted to melamine, the higher molecular nitrogen compounds, especially melam and melem, are also re-converted to melamine by reaction with the ammonia in the process gas, and the catalyst fines still present in the process gas of the fluidized-bed reactor are removed.

© KIPO & WIPO 2007

(KO)
유동층 촉매 공정에서 요소로부터 멜라민을 생산함에 있어서 멜라민 수득량을 증가시키고 가루(dust) 분리를 개선하기 위한 공정으로서, 유동층 반응기의 공정 가스를 촉매로 채워진 하나 또는 그 이상의 링 반응기로 구성된 필터-반응기로 이동시키는 것을 특징으로 하며, 상기 공정 가스는 멜라민 외에 전환되지 않은 이소시안산, 멜람 및 멜렘 및 다른 고분자 질소 화합물을 포함하며, 아직 전환되지 않은 이소시안산은 멜라민으로 전환시키고, 고분자 질소 화합물, 특히 멜람 및 멜렘은 공정가스 내 암모니아와 함께 반응시켜 멜라민으로 재전환시키고, 유동층 반응기의 공정가스 내에 잔존하는 촉매 미립자(fine)를 제거하는 것을 특징으로 한다.

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