... are selectively processed, for example, polymerization, shielding, passivation effect and discharged as residues, so as to remove the ... oil.This technology is different from the traditional distillation process with sulfuric acid,it is also different ... :catalyzing treatment tank,blender,vacuum system;3,Distillation system:distillation tower,distillation kettle,circulation pump,heat exchanger;4,Cooling ...