Abstract The paper presents current reports on kinetics and mechanisms of reactions with mercury which take place in the exhaust gases, discharged from the processes of combustion of solid fuels (coals). The three main stages were considered. The first one, when thermal decomposition of Hg components takes place together with formation of elemental mercury (Hg0). The second one with homogeneous oxidation of Hg0 to Hg2+ by other active components of exhaust gases (e.g. HCl). The third one with heterogeneous reactions of gaseous mercury (the both - elemental and oxidised Hg) and solid particles of fl y ash, leading to generation of particulate-bound mercury (Hgp). Influence of exhaust components and their concentrations, temperature and retention time on the efficiency of mercury oxidation was determined. The issues concerning physical (gas-solid) and chemical speciation of mercury (fractionation Hg0-Hg2+) as well as factors which have influence on the mercury speciation in exhaust gases are discussed in detail.

中文翻译：

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固体燃料燃烧过程中汞的转化——综述

摘要 本文介绍了与汞在固体燃料（煤）燃烧过程中排放的废气中发生的反应动力学和机制的最新报告。考虑了三个主要阶段。第一个，当 Hg 组分的热分解与元素汞 (Hg0) 的形成一起发生时。第二种是通过废气的其他活性成分（例如 HCl）将 Hg0 均匀氧化为 Hg2+。第三种是气态汞（元素汞和氧化汞）和飞灰的固体颗粒发生非均相反应，导致产生颗粒结合汞 (Hgp)。确定了废气成分及其浓度、温度和停留时间对汞氧化效率的影响。