EP 1114019 A1 20010711 - METHOD FOR SEPARATING AND PURIFYING CARBOXYLIC ACID DERIVED FROM THE DIRECT OXIDATION OF A HYDROCARBON
Title (en)
METHOD FOR SEPARATING AND PURIFYING CARBOXYLIC ACID DERIVED FROM THE DIRECT OXIDATION OF A HYDROCARBON
Title (de)
VERFAHREN ZUR TRENNUNG UND REINGEWINNUNG EINER IN DIREKTOXIDATION VON EINEM KOHLENWASSERSTOFF ENTHALTENEN CARBONSÄURE
Title (fr)
PROCEDE DE SEPARATION ET DE PURIFICATION DE L'ACIDE CARBOXYLIQUE ISSU DE L'OXYDATION DIRECTE D'UN HYDROCARBURE
Publication
Application
Priority
- FR 9902182 W 19990914
- FR 9811591 A 19980914
Abstract (en)
[origin: WO0015598A1] The invention concerns an improved method for treating a reaction medium derived from the direct oxidation of hydrocarbon into carboxylic acid, using molecular oxygen or a gas containing same, in liquid phase, in a solvent and in the presence of a catalyst dissolved in the reaction medium. The method is characterised in that it consists in: when the reaction composition medium allows it, decantation into two liquid phases: a higher non-polar phase and a lower polar phase; distillation of said lower phase, or as the case may be the whole reaction mixture, for separating the distillate and the distillation tail comprising the acid formed, the catalyst, the heavy compounds, at least part of the solvent and optionally the intermediates and by-products of the reaction; purification treatment by oxidation, using molecular oxygen or a gas containing same or using oxygen donors, of the previously obtained distillation tail; distillation of the solvent and intermediates and by-products of the reaction possibly still in the mixture; crystallisation of the carboxylic acid produced in the reaction; re-crystallisation in water of the carboxylic acid produced from the reaction.
IPC 1-7
IPC 8 full level
C07B 61/00 (2006.01); C07C 51/215 (2006.01); C07C 51/43 (2006.01); C07C 51/44 (2006.01); C07C 51/48 (2006.01); C07C 51/487 (2006.01); C07C 55/02 (2006.01); C07C 55/14 (2006.01)
CPC (source: EP KR US)
C07C 51/43 (2013.01 - EP US); C07C 51/44 (2013.01 - EP US); C07C 51/487 (2013.01 - EP KR US)
C-Set (source: EP US)
Citation (search report)
See references of WO 0015598A1
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 0015598 A1 20000323; AR 020437 A1 20020515; BR 9913719 A 20020528; CA 2343013 A1 20000323; CN 1348435 A 20020508; CZ 2001918 A3 20010815; EP 1114019 A1 20010711; FR 2784099 A1 20000407; FR 2784099 B1 20001124; ID 29135 A 20010802; JP 2002524545 A 20020806; KR 20010075110 A 20010809; PL 346640 A1 20020225; RU 2208604 C2 20030720; SK 3512001 A3 20010911; TW 522147 B 20030301; UA 55564 C2 20030415; US 6563001 B1 20030513
DOCDB simple family (application)
FR 9902182 W 19990914; AR P990104596 A 19990914; BR 9913719 A 19990914; CA 2343013 A 19990914; CN 99812590 A 19990914; CZ 2001918 A 19990914; EP 99942966 A 19990914; FR 9811591 A 19980914; ID 20010841 A 19990914; JP 2000570139 A 19990914; KR 20017003311 A 20010314; PL 34664099 A 19990914; RU 2001110090 A 19990914; SK 3512001 A 19990914; TW 88115739 A 19990913; UA 01042574 A 19990914; US 78711601 A 20010612