抄録
Oxy-Fuel coal combustion has drawn attention in the world as useful technique to achieve carbon dioxide capture and storage (CCS). It is a technology to enrich CO2 in exhaust gas by the flue gas recirculation with additional pure O2 to combustion atmosphere, which makes easy to capture CO2. Meanwhile, bubbling fluidized bed coal combustion has advantages of direct sulfur capturing in bed material and decreasing of thermal NOX in low combustion temperature. Objectives of this paper are to understand hazardous emission behaviors during the oxy-coal fluidized bed combustion under the actual flue gas recirculation condition, compared with those under the air and CO2-O2 combustion conditions. A lab-scale fluidized bed reactor was utilized as the experimental equipment. Dusts were separated from flue gas via cyclone downstream, and carbon contents in them were analyzed to estimate carbon balances through the reactor.
