... machine, during the process it just generates less waste (sludge), the waste (Sludge) doesn't contains any oil, so ... dealkalizing.-- oil vacuum distillation plant,-- oil refinery, diesel production line,-- waste tyre, rubber, plastic pyrolysis plant, cracking plant.-- essential oil ... refinery, etc.Waiting for your news. Diesel production line,treat waste engine oil ,motor oil into diesel.sludge oil ...