Process for producing ethanol
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United States of America Patent
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Aug 9, 2005
Grant Date -
Apr 24, 2003
app pub date -
Dec 4, 2002
filing date -
Mar 11, 1999
priority date (Note) -
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Abstract
A process for producing ethanol including a combination of biochemical and synthetic conversions results in high yield ethanol production with concurrent production of high value coproducts. An acetic acid intermediate is produced from carbohydrates, such as corn, using enzymatic milling and fermentation steps, followed by conversion of the acetic acid into ethanol using esterification and hydrogenation reactions. Coproducts can include corn oil, and high protein animal feed containing the biomass produced in the fermentation.
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