... principle of vacuum distillation used oil recycling machineThis equipment adopt physicochemical actions to polymerize, passivate, absorb ... distilling kettle, heater, circle pump; d. Cooling system: refrigerating equipment, water pump, water tank, cooler I,cooler II, Condenser ... b. Environmentally friendly, without secondary pollution. c. The equipment can recycle gasoline oil, diesel oil, engine oil, ...