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. 21, 2010
Filed:
Apr. 28, 2005
Raymond J. Zinobile, Houston, TX (US);
Mark O. Scates, Houston, TX (US);
Jonathan A. Makelki, Bay City, TX (US);
Manuel Salado, Seabrook, TX (US);
Raymond J. Zinobile, Houston, TX (US);
Mark O. Scates, Houston, TX (US);
Jonathan A. Makelki, Bay City, TX (US);
Manuel Salado, Seabrook, TX (US);
Celanese International Corporation, Pasadena, TX (US);
Abstract
A process for the reduction and/or removal of permanganate reducing compounds formed by the carbonylation of methanol in the presence of a Group VIII metal carbonylation catalyst to produce acetic acid is disclosed. More specifically, a process for reducing and/or removing permanganate reducing compounds or their precursors from intermediate streams during the formation of acetic acid by said carbonylation processes is disclosed. In particular, a process in which a low boiling overhead vapor stream from a light ends column is subjected to a single distillation to obtain an overhead that is subjected to an extraction to selectively remove and/or reduce PRC's from the process is disclosed.