广东电力2016，Vol.29Issue(11)：18-22,132,6.DOI:10.3969/j.issn.1007-290X.2016.11.004
石灰石湿法脱硫系统中汞的二次释放特性
Secondary Release Characteristic of Mercury in Limestone Wet Flue Gas Desulfurization System
摘要
Abstract
In allusion to the problem of limestone-gypsum wet flue gas desulfurization(WFGD)system being unable to remo-ving Hg0 ,this paper employs experiments for studying influence of changes of working conditions on mercury secondary re-lease such as initial mass concentration of Hg2+ in serous fluid,temperature and pH value of serous fluid,amount-of-sub-stance concentration of S(IV)and SO2-4 ,volume fraction of Cl- and addition of Na2 S and H2 O2. Results indicate initial mass concentration of Hg2+ and amount-of-substance concentration of SO2-4 has small influence on mercury secondary re-lease,rise of temperature and high pH value can reduce mercury secondary release and a small number of S in serous fluid will promote reduction of mercury. In addition,when there is Cl- in serous fluid or adding Na2 S and H2 O2 ,it is able to re-strain reduction of mercury.关键词
燃煤锅炉/烟气脱硫/汞/二次释放Key words
coal-fired boiler/flue gas desulfurization/mercury/secondary release分类
资源环境引用本文复制引用
孟东栋,王炫,杨涛,张成..石灰石湿法脱硫系统中汞的二次释放特性[J].广东电力,2016,29(11):18-22,132,6.基金项目
广东省省部产学研结合项目(2013B090500008) （2013B090500008）
国家自然科学基金资助项目(51006042) （51006042）
