Methods to lower oil content in distillers grains
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United States of America Patent
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Jul 19, 2022
Grant Date -
May 30, 2019
app pub date -
Nov 20, 2018
filing date -
Nov 28, 2017
priority date (Note) -
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Abstract
A method and system for improving ethanol production from biomass are provided which includes adding at least one separation aid to stillage, that is preferably whole stillage, that contains oil and/or fat generally in the form of an emulsion, to form a treated stillage prior to centrifuging the stillage, and centrifuging the treated stillage in at least one centrifuge to separate at least a portion of the solids content from the treated stillage. The separation aid contains at least one anionic surfactant, at least one non-ionic surfactant, at least one organic solvent that is miscible in water, and water, and optionally at least one lecithin. Treated stillage products are also provided which can contain the indicated separation aid.
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