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. 23, 2003
Filed:
Apr. 16, 2002
Jerry A. Broussard, Marietta, GA (US);
Hung-Cheun Cheung, Corpus Christi, TX (US);
Stephen Andrew Houliston, Ottumwa, IA (US);
Michael E. Huckman, Corpus Christi, TX (US);
Peggy McKarns Macatangay, Corpus Christi, TX (US);
Madan Singh, Corpus Christi, TX (US);
Michael L. Karnilaw, Houston, TX (US);
G. Paull Torrence, Corpus Christi, TX (US);
Celanese International Corporation, Dallas, TX (US);
Abstract
A method and system is provided for producing acetic acid by the catalytic carbonylation of methanol with carbon monoxide to obtain a reaction product stream comprising acetic acid and a minor amount of acetaldehyde. The acetaldehyde content in the reaction product stream is reduced by oxidation to convert at least a portion of the acetaldehyde in the stream to acetic acid or further to CO and H O. The oxidized stream may then be directed to the purification section, the reaction section, or both whereby the deleterious effects of acetaldehyde are reduced. Advantage of the present invention over conventional processes is the reduced need to dispose of acetaldehyde as waste and improved overall system efficiency in the production of acetic acid.