... gas seperate , depositing tank , cooling pool , cooling pipes , oil tank , water seal , furnace , desulfrization deduster , water film ... We put fuels ( coal , wood , charcoal , fuel oil ) into furnace for heating reactor . Here are blowers ... waste gas can combustion as fuel . It can help saving much wood coal and charcoal .5 ... or plastics to refine oil , carbon black are produced . How could we get out ...