Combustion chamber slag, {HEAD ~ cleanse} from {TAIL ~ heavy metals} and not burned out fuel in slag of heat power station, cool by air, which is then used in combustion chamber 
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Combustion chamber slag , { HEAD ~ cleanse } from { TAIL ~ heavy metals } and not burned out fuel in slag of heat power station , cool by air , which is then used in combustion chamber
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH