가압 기포유동층에서 산소전달입자들의 환원반응특성
Reduction Characteristics of Oxygen Carriers in a Pressurized Bubbling Fluidized Bed
CLC(매체순환연소), Oxygen carrier(산소전달입자), Reduction(환원), Pressurized fluidized bed(가압유동층), CH4(메탄), CO2 selectivity(CO2 선택도)
JOO‐YOUNG YOON1, DAL‐HEE BAE1, JEOM‐IN BAEK2, HO‐JUNG RYU1†
Effects of pressure, temperature, gas velocity, and fuel flow rate on reduction of three oxygen carriers,
SDN70, OC-1, OC-2, were measured and investigated in a pressurized bubbling fluidized bed reactor. Among three
oxygen carriers OC-2 was selected as the best oxygen carrier in view of fuel conversion and CO2 selectivity.
However, all oxygen carriers showed good reactivity even at high pressure conditions. SDN70 particle showed
maximum reactivity at 900°C and low reactivity at 950°C. However, reactivity decay of OC-1 and OC-2 particles
at high temperature condition was negligible. The fuel conversion and the CO2 selectivity slightly decreased as
the gas velocity increased, whereas they are slightly increased as the fuel concentration increased.