Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Patent
1996-11-19
1998-11-03
Geist, Gary
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
562607, 562609, 502158, C07C 5112, C07C 5308
Patent
active
058311203
ABSTRACT:
In the process for the production of acetic acid by carbonylation of methanol and/or a reactive derivative thereof the water concentration in the liquid reaction composition is maintained at a steady-state concentration by at least one process step selected from the group consisting of (i) recovery and disposing of water from at least part of the overhead process stream from the light ends column and (ii) replacing at least a portion of the methanol feed with a component selected from the group consisting of methyl acetate, dimethyl ether, acetic anhydride and mixtures thereof. The recovered aqueous effluent from this and other processes may be purified of carboxylic acid by reactive distillation with at least one C.sub.1 to C.sub.3 alcohol.
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"C.sub.1 to Acetyls: Catalysis and Process"; Catalysis Today; M. J. Howard et al.; vol. 18, pp. 325-354; .COPYRGT.1993.
"Katapak: Catalysts and Catalyst Supports with Open Crossflow Structure"; Sulzer Chemtech; undated.
Baker Larry Irvin
Muskett Michael James
Nguyen Chuc Tu
Smith Stephen James
Watson Derrick John
Geist Gary
Keys Rosalynd
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