中文摘要：

在不同的反应温度下,选用α-Fe_2O_3或γ-Fe_2O_3为吸附剂,使用VM3000在线测汞仪测定出口Hg~0浓度,研究了气化过程中烟气成分H_2S气体存在下,α-Fe_2O_3或γ-Fe_2O_3和Hg~0的反应机理。实验结果表明,α-Fe_2O_3或γ-Fe_2O_3对汞转化有关键作用;H_2S和α-Fe_2O_3或γ-Fe_2O_3对Hg~0的脱除,非均相反应占主导作用,反应机理为Eley-Rideal机理,即气体H_2S先吸附至氧化铁表面生成中间物质S_（ad）,然后再与气态Hg~0发生反应。

英文摘要：

A series of experiments of α-Fe_2O_3 and γ-Fe_2O_3 with H2 S at different reaction temperatures were carried out to study the reaction mechanism of Hg~0 removal.The measurements of the outlet concentration of Hg~0 were carried out using VM3000 mercury vapour analyzer（Germany）.The results showed that α-Fe_2O_3 and γ-Fe_2O_3 were indispensable in removing Hg~0,and the heterogeneous reaction played a dominant role between H_2S,α-Fe_2O_3 and γ-Fe_2O_3.The reaction mechanism of elemental mercury is in good agreement with the Eley-Rideal mechanism with H_2S pre-adsorption,forming active sulfur sites to react with Hg~0.