Heat Transfer Characteristics of the Furnace in Circulating Fluidized Bed Oxygen-enriched Combustion

In order to study heat transfer characteristics of circulating fluidized bed(CFB) combustion at oxygen-enriched atmosphere,experiments were carried out in a 0.15 MW CFB facility with an inner diameter of 140 mm and a height of 6 000 mm,at O2/N2 and O2/CO2 atmosphere with high oxygen concentration(39.8%~50.7%).The heat transfer of 0.15 MW CFB facility is stable at oxygen-enriched atmosphere.The fluidzed velocity,the primary air flow ratio and combustion atmosphere have no effect on the total heat transfer coefficient of the furnace.The total heat transfer coefficient of the furnace is about 27 W/(m2 K),which can be reference of the design of a test system with the similar mode of heat transfer.