Combustion and heat transfer characteristics of oxy-coal combustion in a 100Â MWe front-wall-fired furnace

► Air- and oxy-coal combustion in a 100 MWe boiler were investigated by computational modeling. ► Oxy-coal combustion with 28% O2 in oxidizer has wall heat flux similar to air-coal combustion. ► Char reactions are strongly associated with the swirling flame structure. ► Proportion of char gasified by CO2 and H2O significantly increases in oxy-coal combustion.