化工进展2016，Vol.35Issue(10)：3362-3366,5.DOI:10.16085/j.issn.1000-6613.2016.10.049
煤在富氧流化床燃烧条件下汞的析出及形态分布
Mercury emission and speciation distribution under oxy coal combustion in fluidized bed
摘要
Abstract
A study on the transformation of mercury speciation during oxy-coal combustion in fluidized bed was conducted. Two selected coal samples were Xuzhou bituminous coal and Huaibei bituminous coal. The effects of temperature and different types of coal on mercury emission during the air-coal combustion,as well as different types of coals on mercury speciation during the oxy-coal combustion were experimentally investigated. The results indicated that higher temperature promoted mercury oxidation and the sulfur content in the coal had an effect on the mercury oxidation during air-coal combustion. During oxy-coal combustion,the concentration of total gaseous mercury [HgT(g)] with Xuzhou bituminous coal was higher than that with Huaibei bituminous coal. Moreover,the percentage of Hg2+(g) to HgT(g) with Xuzhou bituminous coal was 16% higher than that with Huaibei bituminous coal,resulting from much higher sulfur content in Xuzhou bituminous coal. The percentage of Hg2+(g) to HgT(g) under oxy atmosphere was lower than that under air atmosphere with Xuzhou bituminous coal. While the percentage of Hg2+(g) to HgT(g) under oxy atmosphere was higher than that under airatmosphere with Huaibei bituminous coal,which could be due to the different sulfur contents in the two kinds of coals.关键词
燃煤汞形态/富氧/流化床燃烧Key words
mercury oxidation/oxy fuel/fluidized bed combustion分类
资源环境引用本文复制引用
王卉,段钰锋,李雅宁,薛源,刘猛..煤在富氧流化床燃烧条件下汞的析出及形态分布[J].化工进展,2016,35(10):3362-3366,5.基金项目
国家自然科学基金（51376046，51576044）及江苏省普通高校研究生科研创新计划（CXZZ13_0093，KYLX_0115，KYLX_0184， KYLX15_0071）项目。 （）
