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. 10, 2014
Filed:
Jun. 16, 2011
Applicants:
David Lee, Seabrook, TX (US);
Lincoln Sarager, Houston, TX (US);
Trinity Horton, Houston, TX (US);
Victor J. Johnston, Houston, TX (US);
Inventors:
David Lee, Seabrook, TX (US);
Lincoln Sarager, Houston, TX (US);
Trinity Horton, Houston, TX (US);
Victor J. Johnston, Houston, TX (US);
Assignee:
Celanese International Corporation, Dallas, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 27/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
Recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid using an extractive distillation column. The column yields a residue that comprises ethanol, acetic acid, and the extractive agent. The extractive agent may be water and may be separated from the residue and returned to the extractive distillation column.