文献类型： 会议论文

第一作者： Wang Yunjim

作者： Wang Yunjim ¹ ; Yang Liguo ² ; Fan Xiaoxu ² ; DuanYufeng ¹ ;

作者机构： 1.Southeast University

2.Key laboratory for Biomass Gasification Technology of Shandong Province

关键词： Coal-fired power plant;Mercury;Fabric filter;Electrostatic precipitator

会议名称： International Conference on Intelligent System Design and Engineering Applications

主办单位：

页码： 930-933

摘要： The standard Ontario Hydro Method (OHM) was used into the flue gas mercury sampling before and after fabric filter (FF)/ electrostatic precipitator (ESP) locations in coal-fired power stations in China, and then various mercury speciation, Hg~0, Hg~(2+) and Hg~p in flue gas, were analyzed by using EPA method. The solid sample, such as coal, bottom ash and ESP ash, were analyzed by DMA 80, based on EPA Method 7473. According to mercury balance, mercury speciation and its distribution in different locations downstream the flue gas were obtained. The mercury removal efficiency of coal-fired power plants installed FF is more than 20% and 80% respectively. While the mercury removal efficiency of coal-fired power plants installed ESP is around 7%, 20% and 4% respectively. The concentrations of chlorine and sulfur in coal, NO_x, SO_2, HCl and Cl_2 in flue gas have positive correlation with formation of the oxidized mercury.

分类号： tp18-53