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:
Apr. 07, 2015
Filed:
Dec. 20, 2012
Applicant:
Celanese International Corporation, Irving, TX (US);
Inventor:
Nathan Kirk Powell, Waxahachie, TX (US);
Assignee:
Celanese International Corporation, Irving, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 29/80 (2006.01); C07C 29/74 (2006.01); C07C 29/149 (2006.01); C07C 29/147 (2006.01);
U.S. Cl.
CPC ...
C07C 29/80 (2013.01); C07C 29/149 (2013.01); C07C 29/74 (2013.01); C07C 29/147 (2013.01);
Abstract
The present invention relates to processes for producing and recovering ethanol using an intermediate reboiler. An intermediate stream may be withdrawn from a removal zone of a distillation column and recirculated through the intermediate reboiler to the distillation column. The distillation column may also comprise a bottoms reboiler.