... 3.High efficiency. Features:1.Filtration and decontamination:removing the small amount of impurities from crude oil.2 ... C, adding 3.5 times hot water in the phospholipid content of oil, stirring quickly (60-70r ... then vacuum precipitation: temperature above 140 °C. The operating pressure is no more than 8kPa, Using ... for 2.5-3h, to make the residual solvent in the 50mg/kg below, secondary. rapeseed oil ...