Separation of tars from carbonylation reaction mixtures

Details Separation of tars from carbonylation reaction mixtures Separation of tars from carbonylation reaction mixtures

C - Chemistry, Metallurgy

07

C

260/536, 260/496

C07C 53/12 (2006.01) C07C 51/47 (2006.01) C07C 51/48 (2006.01) C07C 51/573 (2006.01) C07C 69/16 (2006.01)

Patent

CA 1169438

ABSTRACT OF THE DISCLOSURE Tarry residues often are formed in carbonylation reac- tions, such as those in which esters or ethers are carbonylated to produce ethylidene diacetate or carboxylic acid anhydrides, such as acetic anhydride. Such residues contain Group VIII noble metal catalysts, typically rhodium, which must be separated before the residues can be disposed of. In the process of the invention, a portion of the carbonylation reaction mixture is flashed to a lower pressure and the resulting residues-containing liquid is extracted with solvents which preferentially remove the tars. The tars are separated from the solvents and disposed of while the solvents are recycled for further use. The catalyst-containing liquid is processed to remove residual solvent and returned to the carbonylation reaction.

401855

Affiliated with

Also associated with

Rating

Separation of tars from carbonylation reaction mixtures does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Separation of tars from carbonylation reaction mixtures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Separation of tars from carbonylation reaction mixtures will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1274064