Process for the production of carbonyl compound

Details Process for the production of carbonyl compound Process for the production of carbonyl compound

C - Chemistry, Metallurgy

07

C

C07C 53/08 (2006.01) C07C 51/10 (2006.01) C07C 51/12 (2006.01) C07C 67/36 (2006.01) C07C 69/14 (2006.01) C07D 307/54 (2006.01)

Patent

CA 2225939

A process for the production of a carbonyl compound such as acetic acid by reacting a carbonylatable compound such as methanol with a carbon monoxide in the presence of a carbonylation catalyst containing a noble metal complex supported on a porous, cross-linked vinylpyridine resin at a temperature of 140-250°C, a carbon monoxide partial pressure of 7-30 kg/cm2 and a hydrogen partial pressure of 0.1-5 kg/cm2 to obtain a liquid product containing the carbonyl compound and an unreacted CO-containing gas product. The water content and the carbonylation degree of the liquid product within the reactor are maintained at 0.5-10 % by weight and 0.5-0.9, respectively, The carbonyl compound is separated from the liquid product in a flasher and/or a distillation tower formed of titanium or a titanium-palladium alloy. The liquid product is introduced into a pressure reducing valve and then mixed with the CO-containing gas product before being fed to the flasher and/or distillation tower.

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