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:
Dec. 17, 2013
Filed:
Nov. 07, 2008
Antti Pasanen, Espoo, FI;
Mikko Ahokas, Helsinki, FI;
Antti Pasanen, Espoo, FI;
Mikko Ahokas, Helsinki, FI;
ST1 Biofuels Oy, Helsinki, FI;
Abstract
The invention relates to a method and an apparatus for dewatering mixture of ethanol and water. The method comprises steps for feeding mixture of ethanol and water () into an evaporator (), evaporating said mixture of ethanol and water () and feeding a stream of vaporized mixture of ethanol and water () to a vapor recompression unit (), pressurizing vaporized mixture of ethanol and water () in the vapor recompression unit () and feeding a stream of pressurized vaporized mixture of ethanol and water () to a membrane unit (), and dividing said stream of pressurized mixture of ethanol and water () in to a stream of mixture of ethanol and water () and into a stream of dewatered mixture of ethanol and water ().