... the operation is simple, no complicate operation control, easy to learn and understand, low labour intensity, 1-2 persons ... ,transfer pump;2,Blending system:catalyzing treatment tank,blender,vacuum system;3,Distillation system:distillation tower,distillation kettle, ... set;6,Oil storage system:Receiving tanks for all distilled fractions;7,Control system:Instruments and control cabinet;V,Oil quality ...