Amathematicalmodelofsinglecharparticlecombustionincirculatingfluidizedbedcombustor(CFBC)isdevelopedinthispaperinthispaper,itsnumericalsolutioninoperatingconditionsofCFBCverifiesthenatureofaphenomenonthatthedistributionofcarboncontentofcharparticleshasapeakvalueversustheirdiameters.Theresultsshowthatthetemperatureofsmallercharparticleisclosetothebedtemperature,andtherealsoexitsapeakvaluefortheburn-outtimeofcharparticlesversustheirdiameters.Thecountermeasuresarepresentedtoimprovecombustionoffineparticles,suchasuseofthefly-ashrecirculation,thehotcyclone,andsoon.
