The separated solid material is recirculated to the fluidized bed through a channel, and a gaseous medium is supplied in a controlled manner to the separated solid material present in the channel in {HEAD ~ order} to displace the combustion gases and provide {TAIL ~ a chemical reaction} 
to provide
The separated solid material is recirculated to the fluidized bed through a channel , and a gaseous medium is supplied in a controlled manner to the separated solid material present in the channel in { HEAD ~ order } to displace the combustion gases and provide { TAIL ~ a chemical reaction }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL