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. 19, 1984
Filed:
Nov. 26, 1982
Applicant:
Inventors:
David Zudkevitch, Denville, NJ (US);
David K Preston, Hope, NJ (US);
Stephen E Belsky, Parsippany, NJ (US);
Assignee:
Allied Corporation, Morris Township, Morris County, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
B01D / ; B01D / ;
U.S. Cl.
CPC ...
203 19 ; 203 39 ; 203 62 ; 203 63 ;
Abstract
Ethanol is concentrated from ethanol-water mixtures by extraction or extractive distillation with a solvent which is a cyclic ketone of at least seven carbons or cyclic alcohol of at least eight carbons such a cyclohexylcyclohexanone or cyclohexylcyclohexanol. In the extractive distillation process, a first overheads is produced which can be made to be steam with minimal ethanol content and a second overhead is produced which can be made to be essentially pure ethanol. The preferred solvents are also non-toxic, such that the alcohol can be used for human consumption.