Patent ID: 9017523
Filing Date: 2015-04-28
Classification: B01D,C07C,C12M,C12P,Y02E

Abstract:
1. A method of recovering ethanol from fusel oils in an ethanol production process, the method comprising: fermenting a mashed feedstock to produce a beer product, ethanol and air pollutants; distilling the beer product to produce ethanol and fusel oils, wherein the fusel oils comprise additional ethanol; tapping the fusel oils from the distilling step; using the tapped fusel oils in a first scrubber to remove the air pollutants produced during the fermenting step; recovering the ethanol produced by the fermenting step and the additional ethanol contained in the tapped fusel oils by the first scrubber; and recovering the ethanol recovered from the first scrubber in a second scrubber using water.