Removal of carbonyl impurities from a carbonylation process...

Details Removal of carbonyl impurities from a carbonylation process... Removal of carbonyl impurities from a carbonylation process...

C - Chemistry, Metallurgy

07

C

C07C 51/12 (2006.01) C07C 51/44 (2006.01) C07C 53/08 (2006.01)

Patent

CA 2060052

A method is provided to improve the quality of recycle of certain residues by modifying the separation of alkanes and alkane-like materials and carbonyl-containing impurities from the recycle during the manufacture of acetic acid by the carbonylation of methanol. The improvement comprises operating a prior art stripper column in a reflux manner and partitioning the residue therefrom by the addition of water. The method also reduces the volume of disposal of potentially valuable recyclable reactants.

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