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http://dx.doi.org/10.4491/KSEE.2011.33.6.420

$CaSO_4$ Decomposition and Desulfurization in In-Furnace Desulfurization for Oxy-Fuel Combustion Using DTF  

Choi, Wook (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
Journal of Korean Society of Environmental Engineers / v.33, no.6, 2011 , pp. 420-425 More about this Journal
Abstract
In general, the decomposition of $CaSO_4$ formed by sulfation reaction in the in-furnace desulfurization process using limestone has strong effect on the desulfurization reaction under the oxy-fuel combustion condition. In this study, the conversion rates were measured and reaction rates were calculated in order to investigate the effects of the experimental variables such as temperature and the concentrations of $CO_2$, $O_2$, $SO_2$, on the $CaSO_4$ decomposition reaction using DTF (Drop Tube Furnace) in the desulfurization reaction. The conversion rate and the reaction rate of $CaSO_4$ decomposition reaction were increased with reaction temperature. $CO_2$ concentration has little effect on $CaSO_4$ decomposition reaction in the presence of $O_2$. Under the same experimental conditions, the decomposition rate of $CaSO_4$ was enhanced with the decreasing the $O_2$ concentration, but vice versa with the increasing of $SO_2$ concentration.
Keywords
Oxy-Fuel Combustion; In-furnace Desulfurization; Limestone; Sulfation; $CaSO_4$ Decomposition;
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Times Cited By KSCI : 2  (Citation Analysis)
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