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. 17, 2014
Filed:
Apr. 01, 2011
R. Jay Warner, Houston, TX (US);
Heiko Weiner, Pasadena, TX (US);
Nathan Bower, Houston, TX (US);
Josefina T. Chapman, Houston, TX (US);
Gerald Grusendorf, Rosharon, TX (US);
Radmila Jevtic, Pasadena, TX (US);
Victor J. Johnston, Houston, TX (US);
R. Jay Warner, Houston, TX (US);
Heiko Weiner, Pasadena, TX (US);
Nathan Bower, Houston, TX (US);
Josefina T. Chapman, Houston, TX (US);
Gerald Grusendorf, Rosharon, TX (US);
Radmila Jevtic, Pasadena, TX (US);
Victor J. Johnston, Houston, TX (US);
Celanese International Corporation, Dallas, TX (US);
Abstract
Purifying and/or recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid. Separation and purification processes of crude ethanol mixture are employed to allow recovery of ethanol and remove impurities. In particular, light ends are separated in an acetaldehyde removal column operating at a pressure greater than atmospheric pressure to recover acetaldehyde that may be returned to the reactor and reduce acetaldehyde concentrations in an ethyl acetate stream.