Solvent extraction of oil from distillers dried grains and methods of using extraction products
AssigneeNovita Nutrition, LLC
InventorsKeith Bruinsma, Donald Endres, Steven J. Furcich
Life of this patent
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Abstract
A process for extraction of crude oil from distillers dried grain solubles and/or distillers dried grains using a solvent extraction process and producing corn distillers meal that may be used as an animal feed supplement is disclosed. The corn distillers meal may be used as a crude protein supplement for use in a livestock feed diet, poultry feed diet, aquatic feed diet or the like. The solvent extracted crude oil may be suitable for other processes, including oleochemical processing for personal care and home care products, biodiesel production, and/or renewable diesel production from hydro-treating the extracted oil to make green diesel fuel.
Claims20
A method of producing renewable fuel from crude corn oil produced from at least one by-product of a dry-grind ethanol process, the method comprising:
- solvent extracting crude corn oil from a by-product produced in a dry-grind ethanol process with a non-polar solvent, the at least one by-product comprising distillers dried grains with solubles, distillers dried grains, or a combination thereof, wherein the crude corn oil comprising free fatty acids in an amount ranging from about 1% to about 15% by weight of the crude corn oil, and the crude corn oil having a residual level of the non-polar solvent in an amount from about 1 ppm to about 500 ppm;
- pretreating the crude corn oil prior to a conversion process, wherein the pretreatment comprises degumming the crude corn oil to separate and remove a gum portion from a crude corn oil portion;
- drying the crude corn oil portion under vacuum to a desired water content;
- and
- subjecting the dried crude corn oil portion to a conversion process to produce the renewable fuel.
Dependencies are inferred from the claim text.