... is distilled out and cooled in to liquid through three stages cooling, they’re separately stored in water, gasoline/diesel, ... system:distillation tower,distillation kettle,circulation pump,heat exchanger;4,Cooling system:water pump,cooling water reservoir,first stage cooler,second stage ... cooler;5,Vacuum system:vacuum cooler,vacuum water tank,vacuum pump set;6,Oil storage system:Receiving ...