VEGETABLE OIL REFINING METHOD (VERSIONS) Russian patent published in 2014 - IPC C11B3/00 

FIELD: food industry.

SUBSTANCE: invention relates to fat-and-oil industry and may be used for vegetable oils purification. The method envisages hydration with an electrolytic solution, phosphatide emulsion separation from oil, neutralisation with water electrolysate with pH>7 with addition of salt to produce activated salt solution with concentration equal to 0.1-1% and neutralised oil separation. Then oil is hydrated by way of stirring with formation of centrifugal flows with vortices inside the flows; then one performs settling, drying and deaerating in vacuum under a pressure of 40-50 kPa. At first one performs oil pouring into the reactor and addition of water anolyte with pH<7 in an amount of 1-8% of the oil weight, heating the mixture up to 65-80°C, vacuumising the reactor to a pressure equal to 40-50 kPa. According to the other method, after heating the reactor is filled with an inert gas. Then one simultaneously performs mixing of water with oil in the vacuumised reactor with a rotor at a rotation rate of 2000-20000 rpm and vibration impact on the reactor body. Then vibration impact frequency produces an even number of lengths of waves fitting within the reactor diameter length. This ensures creation of the mixture additional oscillations crosswise to the vortex flow till formation of an ultradisperse emulsion with particles sized 0.1-0.5 mcm.

EFFECT: invention allows to reduce oil oxidation in the process of refining and increase the oil yield.

2 cl, 1 tbl, 4 ex