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The potential for regulation of mercury emission from coal‐fired boilers is a concern for the electric utility industry. Field data show a wide variation in the fraction of mercury that is emitted as a vapor versus that retained in the solid products. The reason for this variation is not well understood. Near the end of the flue gas path, mercury exists as a combination of elemental vapor and HgCl 2 vapor. The data show that HCl 2 is more likely to be removed form the flue gas. The need to describe accurately mercury reaction products and their concentration‐time correlation prompted investigation of mercury chemical kinetic mechanisms and their application to real combustion systems. This paper uses chemical equilibrium analysis to study the speciation of mercury in flue gases during coal combustion and gasification. The paper presents a simple kinetic model of mercury oxidation in the Hg/O/H/Cl system. The results porn the model calculation are in reasonable agreement with the Mamani‐Paco and Heleble [1] experimental data
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Qiao et al. (2005) studied this question.
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