... (oil distillation) equipment is special for treating the black waste oil, including waste engine oil, lube oil, hydraulic oil, gear oil, ... friendly machine, during the process it just generates less waste (sludge), the waste (Sludge) doesn’t contains any oil, so it ... process, the oil-gas and low volatile are discharged after combustion of hydrocarbons and purification treatment, so, there is no odor ...