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Study on the In-Furnace Desulfurization for Oxy-Fuel Combustion Flue Gases Using Drop Tube Furnace  

An, Young-Mo (Korea Institute of Energy Research)
Jo, Hang-Dae (Korea Institute of Energy Research)
Choi, Won-kil (Korea Institute of Energy Research)
Park, Yeong-Sung (Department of Environmental Engineering, Daejeon University)
Keel, Sang-In (Korea Institute of Machinery & Materials)
Lee, Hyung-Keun (Korea Institute of Energy Research)
Publication Information
Korean Chemical Engineering Research / v.47, no.4, 2009 , pp. 512-517 More about this Journal
Abstract
$SO_2$ concentrations in oxy-fuel combustion flue gases increases about three times as high as that of conventional air combustion system owing to the flue gas recirculation for the control of combustion temperature. So the desulfurization reaction is different from that of the conventional air combustion system due to exceptionally high $CO_2$ and $SO_2$ concentration. In this study, drop tube furnace(DTF) system was used to investigate the desulfurization characteristics of limestone in oxy-fuel combustion furnace. The experiments were performed under $O_2/CO_2$ atmosphere to examine the effect of operating variables such as reaction temperatures, Ca/S ratios and inlet $SO_2$ concentrations on the $SO_2$ removal efficiencies. $SO_2$ removal efficiency increased with reaction temperature, Ca/S ratio and inlet $SO_2$ concentration. And the addition of water vapor resulted in about 4~6% of increase in $SO_2$ removal efficiency.
Keywords
Oxy Fuel Combustion; In-Furnace Desulfurization; Drop Tube Furnace;
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Times Cited By KSCI : 1  (Citation Analysis)
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