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System for production of ethanol and co-products with solvent washing of fermentation product

  • US 8,454,802 B2
  • Filed: 12/23/2009
  • Issued: 06/04/2013
  • Est. Priority Date: 12/23/2008
  • Status: Active Grant
First Claim
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1. A method for reducing the water content of a solid component prepared from a fermentation product of a fermentation process in a biorefinery that performs distillation of ethanol wherein the fermentation product provides for an aqueous-ethanolic component and a solids component, the method comprising the steps of:

  • (a) forming the fermentation product from milled corn;

    (b) partially separating the aqueous-ethanolic component from the solids component to provide a separated solids component having a reduced amount of the aqueous-ethanol component; and

    (c) conducting at least two separate addition-removal procedures thereto wherein each procedure comprises adding an ethanol solution or solvent to the separated solids component and further wherein the ethanol or solvent content of the each solution is higher than ethanol or solvent content of the aqueous-ethanol component remaining in the separated solids component and then removing at least a portion of liquid therefrom such that after each addition-removal procedure the water content in the separated solids component is lower than the prior procedure.

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