| NEW MATERIAL AND TECHNOLOGY |
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| Progress in Catalytic Oxidation Technology for Element Mercury in Coal-fired Flue Gas |
| WANG Hongyan1,2, WANG Baodong1, LI Junhua2, SUN Qi1
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1 National Institute of Clean-and-Low-Carbon Energy, Beijing 102209;
2 School of Environment, Tsinghua University, Beijing 100084 |
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Abstract Aiming at the problem of Hg0 removal from the flue gas of coal-fired power plant, the catalysts of mercury oxidation and catalytic mechanisms are summarized in this work. The catalytic oxidation performance of carbon-based materials, metals and metal oxides and selective catalytic reduction (SCR) catalysts are reviewed. The influence of active component, flue gas condition on mercury oxidation performance of catalysts is briefly discussed. Heterogeneous reaction is an important way of promoting the oxidation of elemental mercury. The oxidation mechanisms varied with catalysts or atmosphere. Finally, taking into consideration the situation of coal-fired power plants in China, future research directions including developing effective and stable SCR catalysts with a low SO2/SO3 conversion rate are proposed. The mechanism of Hg0 oxidation need to be better understood as well.
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Published: 10 April 2017
Online: 2018-05-08
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2017, Vol. 31 
