Processes for maximizing ethanol formation in the hydrogenation of acetic acid

A process for purifying a crude ethanol product to reduce formation of byproduct and maximize production of ethanol. The process comprises the step of hydrogenating acetic acid in a reactor in the presence of a catalyst to form the crude ethanol product. The process further comprises the step of sep...

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Main Authors BOWER, NATHAN, GRUSENDORF, GERALD, WARNER, R. JAY, PAN, TIANSHU, JEVTIC, RADMILA, WEINER, HEIKO, CHAPMAN, JOSEFINA T, HORTON, TRINITY, JOHNSTON, VICTOR J
Format Patent
LanguageEnglish
Published 02.08.2012
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:A process for purifying a crude ethanol product to reduce formation of byproduct and maximize production of ethanol. The process comprises the step of hydrogenating acetic acid in a reactor in the presence of a catalyst to form the crude ethanol product. The process further comprises the step of separating at least a portion of the crude ethanol product in a purification zone. The purification zone preferably comprises a first column, which yields a first distillate comprising ethanol, water and ethyl acetate, and a first residue comprising acetic acid. The portion of the crude ethanol product has a residence time from the reactor to the purification zone from 5 minutes to 5 days.
Bibliography:Application Number: AU20110213126