METHOD FOR REFINING OF VEGETABLE OILS FROM WAXES Russian patent published in 2005 - IPC

FIELD: fat-and-oil industry, in particular, vegetable oil refining processes.

SUBSTANCE: method involves freezing out vegetable oil while adding auxiliary filtering powders; holding vegetable oil at low temperature; separating used filtering powder with wax-containing sediment from refined vegetable oil and regenerating separated used filtering powder; during regeneration process, mixing used filtering powder with additionally introduced fatty product to pasty state; heating while mixing to temperature sufficient for melting of all wax fractions and separating resultant mixture by centrifuging into regenerated dry filtering powder and wax-containing fatty product. Regenerated filtering powder produced may be utilized multiple times in the processes of freezing out of vegetable oil.

EFFECT: increased adsorptive activity with respect to wax globules on surface of filtering powder particles, reduced total consumption of filtering powder, obtaining of concentrated wax-containing fatty products immediately from used sediments, reduced loss of winterized oil due to blocking of inner pores of particles by wax-containing fat product.