Fatty acid conversion method

Abstract

The invention discloses a fatty acid conversion method. The method comprises the following steps: mixing oil with glycerin, heating the obtained mixture to 60DEG C, carrying out an enzyme digestion reaction on free fatty acids in the oil and glycerin with lipase as a catalyst in order to convert FFA in oil into triglyceride, heating to 210DEG C, and carrying out an esterification reaction on the excess glycerin and the free fatty acids in the oil with zinc chloride as a catalyst in high vacuum environment under a pressure of 700-750Pa in order to make the free fatty acids become triacylglycerol, The method omits a depickling technology and improves the ester output.

Description

technical field [0001] The invention relates to a method for converting fatty acids. Background technique [0002] In the current oil conversion technology, in the enzymatic exchange reaction between oil and methanol, 1 mole of oil reacts with 3 moles of methanol to generate 3 moles of methyl ester and 1 mole of glycerin, while in the esterification reaction of fatty acids and methanol, 1 mole Fatty acid reacts with 1 mole of methanol to produce 1 mole of methyl ester and 1 mole of water. The resulting water dilutes the concentration of the reactant methanol, greatly reducing the methanol yield and slowing down the reaction. The current treatment method for removing fatty acids is to use chemical methods to neutralize and saponify fatty acids to remove fatty acids, which will increase the process and other input costs, and also cause waste of fatty acids. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method...

AI Technical Summary

Problems solved by technology

The current treatment method for removing fatty acids is to use chemical methods to neutralize and saponify fatty acids, which will increase the process and other input costs, and also cause waste of fatty acids