Method to recover free fatty acids from fats and oils
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United States of America Patent
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Aug 18, 2020
Grant Date -
Dec 20, 2018
app pub date -
Aug 27, 2018
filing date -
Nov 13, 2012
priority date (Note) -
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Abstract
Methods for producing oil from distillers corn oil having high free fatty acid content are provided. In the method, distiller's corn oil is treated with a mixture including an alcohol to result in a low-free fatty acid oily phase and an alcohol phase. The mixture may also include an alkali. The alcohol may be a monohydric alcohol and an aqueous alcohol, such as an aqueous alcohol having a concentration of at least about 15% alcohol-by-weight. The low-free fatty acid phase may include oil and at least one impurity. The low-free fatty acid phase may be cooled, and the oil may be separated from the at least one impurity using membrane filtration.
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