The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 13, 2011
Filed:
Aug. 27, 2009
Michael E. Fitzpatrick, League City, TX (US);
Chuc Tu Nguyen, Friendswood, TX (US);
Wayne J. Brtko, Glen Mills, PA (US);
Brian A. Salisbury, Oxford, PA (US);
Michael E. Fitzpatrick, League City, TX (US);
Chuc Tu Nguyen, Friendswood, TX (US);
Wayne J. Brtko, Glen Mills, PA (US);
Brian A. Salisbury, Oxford, PA (US);
Equistar Chemicals, L.P., Houston, TX (US);
Lyondell Chemical Technology, Houston, TX (US);
Abstract
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.