在不同的反应温度下,选用α-Fe2O3或γ-Fe2O3为吸附剂,使用VM3000在线测汞仪测定出口Hg0浓度,研究了气化过程中烟气成分H2S气体存在下,α-Fe2O3或γ-Fe2O3和Hg0的反应机理.实验结果表明,α-Fe2O3或γ-Fe2O3对汞转化有关键作用;H2S和α-Fe2O3或γ-Fe2O3对Hg0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H2S先吸附至氧化铁表面生成中间物质Sad,然后再与气态Hg0发生反应.
参考文献
| [1] | Jiancheng Wang;Yunpeng Zhang;Lina Han;Liping Chang;Weiren Bao .Simultaneous removal of hydrogen sulfide and mercury from simulated syngas by iron-based sorbents[J].Fuel,2013(Jan.):73-79. |
| [2] | Shengji Wu;Md. Azhar Uddin;Eiji Sasaoka .Characteristics of the removal of mercury vapor in coal derived fuel gas over iron oxide sorbents[J].Fuel,2006(2):213-218. |
| [3] | Jeffrey W.Portzer;John R.Albritton;C.Clark Allen;Raghubir P.Gupta .Development of novel sorbents for mercury control at elevated temperatures in coal-derived syngas: results of initial screening of candidate materials[J].Fuel Processing Technology,2004(6/7):621-630. |
| [4] | Roles of γ-Fe_2O_3 in fly ash for mercury removal: Results of density functional theory study[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2010(23):P.6991. |
| [5] | Stephen Niksa;Naoki Fujiwara .A Predictive Mechanism for Mercury Oxidation on Selective Catalytic Reduction Catalysts under Coal-Derived Flue Gas[J].Journal of the Air & Waste Management Association,2005(12):1866-1875. |
| [6] | Evan J. Granite;Henry W. Pennline;Richard A. Hargis .Novel Sorbents for Mercury Removal from Flue Gas[J].Industrial & Engineering Chemistry Research,2000(4):1020-1029. |
| [7] | Takefumi Morimoto;Shengji Wu;Md. Azhar Uddin;Eiji Sasaoka .Characteristics of the mercury vapor removal from coal combustion flue gas by activated carbon using H_2S[J].Fuel,2005(14/15):1968-1974. |
| [8] | Masaki Ozaki;Md. Azhar Uddin;Eiji Sasaoka;Shengji Wu .Temperature programmed decomposition desorption of the mercury species over spent iron-based sorbents for mercury removal from coal derived fuel gas[J].Fuel,2008(17/18):3610-3615. |
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