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Processes and systems for alcohol production and recovery

  • US 9,732,362 B2
  • Filed: 05/03/2013
  • Issued: 08/15/2017
  • Est. Priority Date: 05/04/2012
  • Status: Active Grant
First Claim
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1. A method for improving the product profile of an ethanol production plant comprising modifying the plant to produce one or more biofuel products other than ethanol wherein modifying the plant comprisesadding a mixing device and a separation system to an external cooling loop of a fermentor, adding one or more separation units,separating a feedstock slurry prior to fermentation to form streams:

  • (i) an aqueous solution comprising fermentable sugars, (ii) a wet cake comprising undissolved solids, and (iii) an oil stream,adding one or more extractant columns and/or extractant separation units,repurposing an ethanol beer column for distillation of an alcohol other than ethanol, and reconfiguring an evaporation train,wherein the modifications allow the plant to be reverted to ethanol production.

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