... the raw materials); During the oil regenerating process, the oil-gas and low volatile are discharged after combustion of hydrocarbons and ... and no environment pollution. HCY Heating device are optional, there are oil-burner furnace, natural-gas furnace, also you use the coal ... diesel fuel oil. 2, HCY Heating device are optional, there are oil-burner furnace, natural-gas furnace, also you use the coal ...