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