Process for the purification and recovery of the contaminated so

Details Process for the purification and recovery of the contaminated so Process for the purification and recovery of the contaminated so

1990-08-06

1991-09-10

Konopka, Paul E.

Catalyst, solid sorbent, or support therefor: product or process

Regenerating or rehabilitating catalyst or sorbent

Treating with a liquid or treating in a liquid phase,...

423 22, 502 22, 502 32, 502 34, 560232, 562517, 562519, 562891, B01J 3868, B01J 3140, C07C 6736, C07C 5112

Patent

active

050473778

ABSTRACT:
In a process for the purification and recovery of a contaminated catalyst solution produced during carbonylation of methanol and/or methyl acetate and/or dimethyl ether and containing carbonyl complexes of rhodium, organic and/or inorganic promoters, undistillable organic impurities and acetic acid, acetic anhydride and ethylidene diacetate, the organic impurities and acetic acid, acetic anhydride and ethylidene diacetate are removed from the contaminatd catalyst solution by extraction at pressures from 35 to 450 bar and temperatures from 0.degree. to 120.degree. C. with a liquefied or supercritical gas, and the phase of the liquefied or supercritical gas is separated from the purified, promoter-containing catalyst solution, the phase of the liquefied or supercritical gas is separated by flash vaporization, the recovered gas is re-employed for extraction, acetic acid, acetic anhydride and ethylidene diacetate are separated off from the component which remains liquid, and are combined with the purified catalyst complex to prepare fresh catalyst solution and, finally, the organic impurities remaining as the residue on separation of the phase of the liquefied or supercritical gas is purged.

REFERENCES:
patent: 3969196 (1976-07-01), Zosel
patent: 4041082 (1977-08-01), Onoda et al.
patent: 4440570 (1984-04-01), Erpenbach et al.
patent: 4557760 (1985-12-01), Erpenbach et al.
patent: 4568653 (1986-02-01), Schwirten et al.
patent: 4629711 (1986-12-01), Erpenbach et al.
patent: 4746640 (1988-05-01), Erpenbach et al.

Affiliated with

Also associated with

Rating

Process for the purification and recovery of the contaminated so does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the purification and recovery of the contaminated so, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the purification and recovery of the contaminated so will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-539930