Patent ID: 6768015
Filing Date: 2004-07-27
Classification: C11C,Y02E

Abstract:
A method of making alky ester comprising the following steps:providing a vegetable oil source, the vegetable oil source including free fatty acids and/or glycerides; providing methanol in an excess between about 1.0 equivalent to about 5 equivalents; mixing the methanol and vegetable oil source in the presence of a catalytic acid in an amount between about 0.0 to about 0.5 wt %; heating the mixture to a temperature of between about 80Â° C. to about 200Â° C.; maintaining the pressure of the heated mixture between about 25 psia to about 500 psia; reacting the methanol and the free fatty acids and/or glycerides for an effective conversion of the free fatty acids and/or glycerides into fatty acid alkyl esters; recovering the fatty acid alkyl esters.