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Title: Low energy process of producing gasoline-ethanol mixtures

Patent ·
OSTI ID:5741182

Gasoline-ethanol mixtures useable as motor fuel are produced by a relatively low energy process comprising interrelated distillation and extraction steps. In the first step, aqueous ethanol, such as an ethanol fermentation beer, is subjected to fractional distillation to produce a distillate of at least 75 weight percent ethanol, which is then subjected to extraction with gasoline under conditions producing an extract containing the desired amount of ethanol, such as 8 to 14% by weight. The aqueous phase raffinate from the extraction is returned to the fractionation column for redistillation.

Assignee:
Kansas State Univ Research Foundation
Patent Number(s):
US 4297172
OSTI ID:
5741182
Resource Relation:
Patent File Date: Filed date 23 Jan 1980; Other Information: PAT-APPL-114699
Country of Publication:
United States
Language:
English