Patent ID: 9663437
Date: 2017-05-30
CPC Classifications: C07C

Claim:
1. A process for producing acetic acid, comprising reacting a first reaction mixture comprising carbon monoxide and at least one of methanol, methyl acetate, dimethyl ether, methyl formate, and dimethyl carbamate in a first reactor under conditions effective to produce a crude acetic acid product; separating, in a separation zone, the crude acetic acid product into at least one derivative stream comprising residual carbon monoxide; reacting a second reaction mixture comprising at least a portion of the residual carbon monoxide in the at least one derivative stream and at least one of methanol, methyl acetate, dimethyl ether, methyl formate, and dimethyl carbamate in a second reactor to produce additional acetic acid, wherein the second reactor is a homogeneous reactor and a reactor carbon monoxide partial pressure is less than 1.05 MPa.