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. 10, 2024
Filed:
Apr. 01, 2020
Applicant:
Celanese International Corporation, Irving, TX (US);
Inventor:
Peter Hanik, Houston, TX (US);
Assignee:
Celanese International Corporation, Irving, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 51/46 (2006.01); B01D 3/14 (2006.01); B01D 3/36 (2006.01);
U.S. Cl.
CPC ...
C07C 51/46 (2013.01); B01D 3/143 (2013.01); B01D 3/36 (2013.01);
Abstract
Disclosed is a method for removing acetaldehyde and other permanganate reducing compounds (PRCs) from a process stream in the methanol carbonylation process for making acetic acid. The method includes the steps of forming an azeotrope to reduce the boiling point of the acetaldehyde and other PRCs to facilitate separation of the acetaldehyde and other PRCs from the process. In one embodiment the azeotrope comprises butane and acetaldehyde.