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:
Sep. 06, 1988
Filed:
Jan. 20, 1987
Applicant:
Inventor:
Alfred G Wheldon, Essex, GB;
Assignee:
United Distillers P.L.C., , GB;
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B01D / ; B01D / ; C12P / ;
U.S. Cl.
CPC ...
203 19 ; 203 26 ; 203 27 ; 203 41 ; 203 46 ; 203 49 ; 203 71 ; 203D / ; 203D / ; 203D / ; 426494 ; 435161 ; 568916 ;
Abstract
A method and apparatus for removing water from a liquid mixture of water and ethanol contacts it with liquid carbon dioxide so that the ethanol is preferentially transferred into solution, dries the solution using an adsorbent, and then recovers dry ethanol by distilling off the carbon dioxide. This process is particularly energy efficient especially when it includes a fermentation process to generate the ethanol and uses the carbon dioxide generated during the fermentation as the source of liquid carbon dioxide. In this case the method and apparatus provide an additional product of dry carbon dioxide.