... HFO/LO/DO 3.remove water and impurities 4.automatic control the process (1)DA-XXX-S/O ... centrifugal machines ,filters,stainless steel palte heaters,auto temperature control executor,triple valves,oil feed pumps,sludge oil ... realize auto control,including auto start,auto increase temperature,auto oil inlet, auto water seal,auto seal ... with auto history record copy etc. automatic heavy oil purifier module