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PROCESS FOR PRODUCING ETHANOL AND FOR ENERGY RECOVERY

  • US 20100041117A1
  • Filed: 10/12/2009
  • Published: 02/18/2010
  • Est. Priority Date: 12/19/2005
  • Status: Abandoned Application
First Claim
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1. An integrated continuous process for the production of ethanol and self generating energy on a commercial scale after an initial process start-up, said integrated continuous process comprising the steps of:

  • (a) fermenting a mash in an aqueous medium to produce a beer;

    (b) distilling said beer to produce commercial scale quantities of ethanol and a remainder;

    (c) digesting a mixture containing said remainder anaerobically in a digester tank to produce commercial scale quantities of a biogas and a residue;

    (d) combusting said biogas to produce electricity and steam;

    (e) utilizing steam produced by said the if combustion during the steps of fermenting and distilling to produce said ethanol; and

    (f) utilizing electricity produced by said combustion during the step of fermenting the mash;

    said commercial scale of biogas being defined to include up to 11.6 million BTUs of methane per dry ton of said remainder anaerobically digested with the steam produced by step (d) being sufficient to provide, after said initial start up of said integrated continuous process, all the steam of step (e) used to produce said ethanol and said remainder of step (b).

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