공기연소 분위기와 순산소 연소 분위기에서 입자 크기와 습도가 <TEX>$CaCO_3$</TEX> 흡착제 입자의 반응특성에 미치는 영향 분석
Analysis of the Effect of Particle Size and Humidity on Reaction Characteristics of <TEX>$CaCO_3$</TEX> Sorbent Particle under Air and <TEX>$O_2/CO_2$</TEX> Atmospheric Conditions
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초록
It is necessary to find out the reaction characteristics of CaCO3 sorbent particles in air and O2/CO2 atmospheric conditions in order that an in-furnace desulfurization technique can be applied to oxy-fuel combustion system. In this study, rate of change of GMD(geometric mean diameter) and specific surface area of CaCO3 sorbent particles reacted in DTF(drop tube furnace) experimental setup were analyzed to investigate the effect of particle size and humidity on the reaction characteristics of them. In air atmospheric condition, calcination process occurs actively within shorter residence times as the particle size increases. On the contrary, in O2/CO2 atmospheric condition, a calcination process is delayed as particle size increases. The increment of humidity accelerates calcination process in an air atmospheric condition and increase rate of calcination in an O2/CO2 atmospheric condition.
Abstract
It is necessary to find out the reaction characteristics of <TEX>$CaCO_3$</TEX> sorbent particles in air and <TEX>$O_2/CO_2$</TEX> atmospheric conditions in order that an in-furnace desulfurization technique can be applied to oxy-fuel combustion system. In this study, rate of change of GMD(geometric mean diameter) and specific surface area of <TEX>$CaCO_3$</TEX> sorbent particles reacted in DTF(drop tube furnace) experimental setup were analyzed to investigate the effect of particle size and humidity on the reaction characteristics of them. In air atmospheric condition, calcination process occurs actively within shorter residence times as the particle size increases. On the contrary, in <TEX>$O_2/CO_2$</TEX> atmospheric condition, a calcination process is delayed as particle size increases. The increment of humidity accelerates calcination process in an air atmospheric condition and increase rate of calcination in an <TEX>$O_2/CO_2$</TEX> atmospheric condition.
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