METHOD OF CLEANING VEGETABLE OILS FROM WAX Russian patent published in 2008 - IPC C11B3/00 C11B3/10 

FIELD: oil and fat industry.

SUBSTANCE: proposed method consists in cooling oil to temperature of 12-13° C, introducing activated crystallization initiator into oil, holding it during definite period of time at mixing and separating admixtures in vacuum filter. Used as activated crystallization initiator is mineral mixture "kaolinite-β-quartz" at ratio of 9:1 to 9.8:0.2 formed by grinding with sodium percarbonate at ratio of 8:1 to 12:1 followed by spraying on surface of product of grinding the phosphoric acid at concentration of 20-25% taken in the amount of 50-75% of mass of mixture and drying. Crystallization initiator is introduced in oil at ratio to impurity wax of 1:1 to 2:1 in the amount no less than 0.1% of mass of oil; mixture is held for 4-5 h at mixing the phases at intensity of 0.5-1.0 s^-1.

EFFECT: complete cleaning of oil from wax; reduction of peroxide number; enhanced oxidation stability.

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