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Energy Sources, Part A: Recovery, Utilization, and Environmental Effects Volume 36, 2014 - Issue 1
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Original Articles

The Effect of Heat Decomposition Temperature on the Dissolution Rate of Magnesium-based Materials for Wet Flue Gas Desulfurization

R.-T. Guo School of Energy Source and Environmental Engineering, Shanghai University of Electric Power, Shanghai, P. R. China
,
W.-G. Pan School of Energy Source and Environmental Engineering, Shanghai University of Electric Power, Shanghai, P. R. China
,
X.-B. Zhang School of Energy Source and Environmental Engineering, Shanghai University of Electric Power, Shanghai, P. R. China
,
Q. Jin SEC-IHI Power Generation Environment Protection Engineering Co. Ltd., Shanghai, P. R. China
,
H.-J. Xu School of Energy Source and Environmental Engineering, Shanghai University of Electric Power, Shanghai, P. R. China
&
J.-X. Ren School of Energy Source and Environmental Engineering, Shanghai University of Electric Power, Shanghai, P. R. China
Pages 1-4 | Received 25 Apr 2011, Accepted 27 May 2011, Published online: 14 Nov 2013
 
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Abstract

Magnesium hydrate is the absorbent in magnesia scrubbing wet flue gas desulfurization. Its dissolution rate has a great impact on the performance of SO2 removal. Further, magnesia is the heat decomposition product of magnesite. The effect of magnesite heat decomposition temperature on the dissolution rate of magnesium hydrate is investigated in this study. As can be seen from the experimental results, magnesium hydrate dissolution rate increased with increasing heat decomposition temperature up to 700°C and then decreased with the increase of heat decomposition temperature. This is caused by the change of magnesite heat decomposition mechanism at a different heat decomposition temperature.

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