A method for reducing aldehydes in an acetic acid production process is disclosed. The acetic acid is produced by reacting methanol and carbon monoxide in the presence of a carbonylation catalyst. The method comprises reacting an aldehyde-containing stream with an alcohol to form an acetal-containing stream. An acetal-enriched stream is separated from the acetal-containing stream and then hydrolyzed to form a hydrolysis mixture comprising the alcohol and the aldehydes. The alcohol is isolated from the hydrolysis mixture and used to react with the aldehyde-containing stream to form the acetal-containing stream. The invention reduces aldehydes in the acetic acid produced.
申请公布号
EP2470489(A2)
申请公布日期
2012.07.04
申请号
EP20100737396
申请日期
2010.07.19
申请人
LYONDELL CHEMICAL TECHNOLOGY, L.P.;EQUISTAR CHEMICALS, LP
发明人
FITZPATRICK, MICHAEL, E.;NGUYEN, CHUC, TU;BRTKO, WAYNE, J.;SALISBURY, BRIAN, A.