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:
Nov. 04, 2014
Filed:
Sep. 13, 2011
Brian W. Hokkanen, Houston, TX (US);
Michael Nutt, Pearland, TX (US);
Tianshu Pan, Houston, TX (US);
Ronald David Shaver, Houston, TX (US);
G. Paull Torrence, League City, TX (US);
Brian W. Hokkanen, Houston, TX (US);
Michael Nutt, Pearland, TX (US);
Tianshu Pan, Houston, TX (US);
Ronald David Shaver, Houston, TX (US);
G. Paull Torrence, League City, TX (US);
Celanese International Corporation, Dallas, TX (US);
Abstract
The present invention is to a process for producing acetic acid comprising the step of reacting a carbon monoxide feed and methanol and/or a methanol derivative in a first reactor to produce a crude acetic acid product. The carbon monoxide may comprise less than 99.5 mol % carbon monoxide. The process further comprises the step of purging a carbon monoxide purge stream comprising a first amount of residual carbon monoxide and one or more impurities. Preferably, the first amount is greater than 20 mol %. The process further comprises the step of separating the crude acetic acid product into at least one derivative stream comprising a second amount of residual carbon monoxide. The process further comprises the step of reacting at least a portion of the second amount of residual carbon monoxide and methanol and/or a methanol derivative in a second reactor to produce additional acetic acid.