유동층연소로에서 탈황효율 실험 및 예측에 관한 연구

Abstract

We have studied that the prediction of desulfurization efficiency by limestone in fluidized-bed coal combustor. The results were presented as follows ; Firstly, the bed temperature had a great deal of effect on the desulfurization and the optimum temperature of limestone was 850oC~900oC. Secondly, as the velocity and temperature increased, ks, K and the desulfurization efficiency increased. So, ks, kd highly depended on the air velocity and bed temperature, and ks, kd were 82.53 mm/sec, 0.0041/sec at 0.2 m/sec, 850oC, ks, kd were 125.62 mm/sec, 0.00532/sec at 0.3 m/sec, 800oC respectively. And ks, kd were 143.78 mm/sec, 0.00568/sec at 0.3 m/sec, 850oC. Thirdly, as a result of desulfurization modeling, there was good agreement between theory and experiments as anthracite fraction increased. At 3.0 of optimum Ca/S molar ratio, there was very good agreement between theory and experiments.