EP 1224029 A1 20020724 - RECOVERY PROCESS FOR OXIDATION CATALYST IN THE MANUFACTURE OF AROMATIC CARBOXYLIC ACIDS
Title (en)
RECOVERY PROCESS FOR OXIDATION CATALYST IN THE MANUFACTURE OF AROMATIC CARBOXYLIC ACIDS
Title (de)
VERFAHREN ZUR WIEDERGEWINNUNG VON OXIDATIONSKATALYSATOREN BEI DER HERSTELLUNG VON AROMATISCHEN KARBONSÄUREN
Title (fr)
PROCEDE DE RECUPERATION POUR UN CATALYSEUR D'OXYDATION DANS LA FABRICATION D'ACIDES CARBOXYLIQUES AROMATIQUES
Publication
Application
Priority
US 9918729 W 19990817
Abstract (en)
[origin: WO0112318A1] An improved separation process for the continuous catalytic oxidation of aromatic alkyls for the production of aromatic carboxylic acids in a liquid solvent medium, wherein the reactor product stream is withdrawn from the oxidation process, then separated to produce a product containing stream, mother liquor stream and a catalyst containing purge stream which is then passed through a filtration system (10) and series of sorption vessels (30, 40, 50, 60) to remove the oxidation catalyst and separate the impurities from the catalyst. The solvent is then separated from the reaction by-products by conventional distillation methods. The solvent is recycled to the process while the reaction by-product residue is disposed of by incineration. The oxidation catalyst is eluted from the ion exchange columns and returned to the process.
IPC 1-7
IPC 8 full level
B01D 15/00 (2006.01); B01D 15/04 (2006.01); B01D 61/02 (2006.01); B01D 61/14 (2006.01); B01D 65/02 (2006.01); B01D 65/04 (2006.01); B01J 20/26 (2006.01); B01J 20/34 (2006.01); B01J 27/128 (2006.01); B01J 27/32 (2006.01); B01J 31/40 (2006.01); B01J 38/00 (2006.01); B01J 38/74 (2006.01); B01J 39/04 (2006.01); B01J 41/04 (2006.01); B01J 41/14 (2006.01); C07C 51/42 (2006.01); C07C 51/47 (2006.01)
CPC (source: EP KR)
B01J 31/04 (2013.01 - EP); B01J 31/28 (2013.01 - EP); B01J 31/30 (2013.01 - EP); B01J 31/32 (2013.01 - EP); B01J 31/4015 (2013.01 - EP); B01J 31/403 (2013.01 - EP); B01J 31/4061 (2013.01 - EP); B01J 38/74 (2013.01 - EP); B01J 39/04 (2013.01 - EP); B01J 41/04 (2013.01 - EP); C07C 51/265 (2013.01 - KR); C07C 51/42 (2013.01 - EP); C07C 51/47 (2013.01 - EP); B01J 27/232 (2013.01 - EP); B01J 31/08 (2013.01 - EP); B01J 2231/70 (2013.01 - EP); Y02P 20/584 (2015.11 - EP)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0112318 A1 20010222; AU 5490899 A 20010313; CN 1120747 C 20030910; CN 1359313 A 20020717; EP 1224029 A1 20020724; EP 1224029 A4 20040908; JP 2003507160 A 20030225; KR 20020046280 A 20020620; MX PA02001652 A 20020806
DOCDB simple family (application)
US 9918729 W 19990817; AU 5490899 A 19990817; CN 99816661 A 19990817; EP 99941213 A 19990817; JP 2001516655 A 19990817; KR 20027001991 A 20020215; MX PA02001652 A 19990817