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:
Jun. 13, 2017
Filed:
Mar. 17, 2016
Applicant:
Celanese International Corporation, Irving, TX (US);
Inventors:
Ronald D. Shaver, Houston, TX (US);
Yaw-Hwa Liu, Missouri City, TX (US);
Mark O. Scates, Houston, TX (US);
Assignee:
CELANESE INTERNATIONAL CORPORATION, Irving, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 51/09 (2006.01); C07C 51/44 (2006.01); C07C 51/12 (2006.01); B01D 3/14 (2006.01); B01D 3/32 (2006.01); B01D 3/42 (2006.01);
U.S. Cl.
CPC ...
C07C 51/09 (2013.01); B01D 3/143 (2013.01); B01D 3/32 (2013.01); B01D 3/4205 (2013.01); C07C 51/12 (2013.01); C07C 51/44 (2013.01);
Abstract
A process for producing acetic acid is disclosed in which the water concentration is controlled in the side stream between two columns. Controlling the water concentration by the liquid light phase recycle controls the hydrogen iodide concentration in the side stream to be less than 50 wppm.