Process for purifying and recovering catalyst solution contamina

Details Process for purifying and recovering catalyst solution contamina Process for purifying and recovering catalyst solution contamina

1987-03-16

1988-05-24

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,...

260546, 260549, 423 22, 502 33, 560232, 562517, B01J 3140, B01J 3868, C07C 5156, C07C 6736

Patent

active

047466405

ABSTRACT:
Catalyst solution contaminated during the carbonylation of methyl acetate and/or dimethylether. To this end, the contaminated catalyst solution is subjected in a first processing stage to extraction with a dialkylether and alkanol, each of which has from 1-4 carbon atoms per alkyl group, and thereby freed from its organic contaminants, from acetic acid, acetic anhydride and ethylidene diacetate, and the ether phase is separated from the purified promoter-containing catalyst solution; next, the ether phase is treated in a second processing stage with iodine and/or methyl iodide; the precipitated promoter containing catalyst complex is separated and dissolved in the purified catalyst solution coming from the first processing stage; the ether phase is separated into its constituents by distilling it; recovered dialkylether and alkanol are used again in the extraction stage; fresh catalyst solution is prepared from the recovered mixture of acetic acid, acetic anhydride and ethylidene diacetate and from the united purified catalyst solution while residual dialkylether and alkanol are distilled off, and the organic contaminants retained in the residue of the ether phase distillation are expelled.

REFERENCES:
patent: 4442304 (1984-04-01), Erpenbach et al.
patent: 4556644 (1985-12-01), Erpenbach et al.
patent: 4557760 (1985-12-01), Erpenbach et al.
patent: 4629711 (1986-12-01), Erpenbach et al.
patent: 4650649 (1987-03-01), Zoeller
patent: 4659682 (1987-04-01), Pugach

Affiliated with

Also associated with

Rating

Process for purifying and recovering catalyst solution contamina 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 purifying and recovering catalyst solution contamina, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for purifying and recovering catalyst solution contamina will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1058417