Affecting Factors of Mercury Oxidation in Coal-fired Flue Gases
An experimental set-up was built,on which a bench-scale experimental was conducted to study the affecting factors of mercury oxidation such as HCl concentration,SO2 concentration,temperature at reactors exit and Hg concentration on mercury oxidation in simulated coal-fired flue gases.The test method used here for mercury speciation was Ontario Hydro Method.The affecting factors of mercury oxidation in different coal-fired flue gas systems was studied in typical constituent flue gas systems.The conclusions were as follows：HCl was the key substance that reacted with Hg vapor in coal-fired flue gas.In the coal-fired flue gas systems containing HCl,HCl could enhance oxidation of Hg vapor;SO2 could decrease the conversion ratio of Hg2+ to total Hg;The higher temperature at reactors exit could increase the conversion ratio of Hg2+ to total Hg,the conversion ratio of Hg2+ to total Hg would become higher at elevated temperature;The conversion ratio of Hg2+ to total Hg decreased with higher Hg concentration.
HCl SO2 mercury oxidation coal-fired flue gas
GAO Hongliang Hou Jing LI Jijing
School of Energy and Environmental Engineering of Zhongyuan University of Technology,Zhengzhou 450007,China
国际会议
合肥
英文
403-406
2008-06-05（万方平台首次上网日期，不代表论文的发表时间）