During {HEAD ~ the combustion} of a fuel in {TAIL ~ a combustion chamber} enclosing a fluidized bed, a fuel and an absorbent are supplied to the fluidized bed 
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During { HEAD ~ the combustion } of a fuel in { TAIL ~ a combustion chamber } enclosing a fluidized bed , a fuel and an absorbent are supplied to the fluidized bed
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH