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System and method for extracting energy from agricultural waste

  • US 6,824,682 B2
  • Filed: 12/17/2002
  • Issued: 11/30/2004
  • Est. Priority Date: 12/18/2001
  • Status: Active Grant
First Claim
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1. A method for treating agricultural wastes comprising:

  • anaerobic digesting a mixture of at least agricultural waste and water to yield solids and a biogas including methane and carbon dioxide;

    reforming the biogas including methane and carbon dioxide to a syngas including carbon monoxide and hydrogen in a steam reformation process;

    converting the syngas containing carbon monoxide and hydrogen to methanol in an alcohol conversion process;

    contacting at least a portion of the methanol with natural fats and/or oils in a transesterification reactor to form glycerine and methyl esters; and

    separating the glycerine from the methyl ester.

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