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:
May. 05, 2015
Filed:
Apr. 26, 2012
David Lee, Seabrook, TX (US);
Adam Orosco, Houston, TX (US);
R. Jay Warner, Houston, TX (US);
Victor J. Johnston, Houston, TX (US);
David Lee, Seabrook, TX (US);
Adam Orosco, Houston, TX (US);
R. Jay Warner, Houston, TX (US);
Victor J. Johnston, Houston, TX (US);
Celanese International Corporation, Irving, TX (US);
Abstract
The present invention is directed to processes for the recovery of ethanol from a crude ethanol product obtained from the hydrogenation of acetic acid using a low energy process. The crude ethanol product is separated in one or more columns. At least one of the columns is operated at a controlled pressure to enhance separation of ethanol and organics. In one embodiment, there are at least two columns that operate at controlled pressures.