Patent ID: 9534182
Date: 2017-01-03
CPC Classifications: C10L,C10M

Claim:
1. A method of producing industrial corn base oil from a fermentation byproduct of a corn ethanol production process, said method comprising: washing a fermentation byproduct of a corn ethanol production process to separate water-soluble products from raw corn oil, said washing step including adding water at about 100° F. to said fermentation byproduct in a first process tank in about a 1:3 ratio by volume, agitating the solution in said first tank for at least 30 minutes, allowing the solution to set for at least 12 hours and separate into layers, and removing the water layer; neutralizing free fatty acid in the raw corn oil solution remaining in said first tank, said neutralizing step including adding a solution of potassium hydroxide to said raw corn oil solution in about a 1:4 ratio by volume, said potassium hydroxide solution containing about 0.05% potassium hydroxide by volume in water at about 100° F., and agitating the combined solution for at least 30 minutes; adding about 0.1-2.5% by volume of a polymeric quaternary biocide to said combined solution, agitating the resulting solution for at least 30 minutes, allowing it to set for at least 12 hours and separate into layers, and removing the water layer; passing the remaining corn oil solution through a vacuum dehydrator set at about 150° F. to a second process tank, filtering out larger particles; and degumming the corn oil solution in said second tank with about 0.5% by volume of 50% tech grade citric acid, employing a kidney loop to filter out precipitates.