Particle and Aerosol Research Vol. 10, No. 2, June 2014 |
ISSN : 1738-8716 (Print) ISSN : 2287-8130 (Online) |
Analysis of the Effect of Particle Size and Humidity on Reaction Characteristics of CaCO3 Sorbent Particle under Air and O2/CO2 Atmospheric Conditions
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Abstracts
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.
Keywords£ºCalcination, CaCO3 sorbent particles, O2/CO2 combustion, Humidity, Particle size
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