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:
Feb. 12, 2013
Filed:
Nov. 18, 2010
Michael Charles Grady, Oaklyn, NJ (US);
William D. Parten, Wilmington, DE (US);
Bruce Vrana, Hockessin, DE (US);
Yihui Tom Xu, Newark, DE (US);
Joseph J. Zaher, Newark, DE (US);
Michael Charles Grady, Oaklyn, NJ (US);
William D. Parten, Wilmington, DE (US);
Bruce Vrana, Hockessin, DE (US);
Yihui Tom Xu, Newark, DE (US);
Joseph J. Zaher, Newark, DE (US);
Butamax (TM) Advanced Biofuels LLC, Wilmington, DE (US);
Abstract
A process for recovering butanol from a mixture comprising a water-immiscible organic extractant, water, butanol, and optionally a non-condensable gas, is provided. The butanol is selected from 1-butanol, 2-butanol, isobutanol, and mixtures thereof. An overhead stream from a first distillation column is condensed to recover a mixed condensate. An entrainer is added to at least one appropriate process stream or vessel such that the mixed condensate comprises sufficient entrainer to provide phase separation of the organic and the aqueous phases to provide for recovery of the butanol.