Experiences from Oxy-fuel Combustion of Bituminous Coal in a 150 kWth Circulating Fluidized Bed Pilot Facility

The oxy-fuel combustion in a circulating fluidized bed was investigated in a 150 kWth pilot facility. A mixture of oxygen and recirculated flue gas was used for the combustion of bituminous coal. The experiments were set to observe the influence of operating conditions on gas concentrations of CO and NOX along with solid burn out. The results in regard to the difference between air and oxy-fuel atmosphere as well as an increase of the inlet oxygen concentration are presented in this paper and compared with results from other research groups.