燃煤痕量元素排放的控制研究  

Overview on the Control of Trace Element Emission during Coal Combustion

作　　者：韩军[1] 徐明厚[1] 

机构地区：[1]华中科技大学煤燃烧国家重点实验室,武汉430074

出　　处：《动力工程》2003年第6期2744-2751,共8页Power Engineering

基　　金：国家重点基础研究专项经费资助项目(G1999022212)

摘　　要：对燃煤中痕量元素的控制方法进行了综述;对各国制订的燃烧源中痕量元素的排放标准做了概述;总结了常用的痕量元素排放的控制方法,包括吸附剂对痕量元素排放的控制和吸附机理、非常难以捕获的气态汞的若干种控制方法。经研究发现:硅铝酸盐、钙基吸附剂在高温下会与痕量元素同时发生物理吸附和化学反应,因而它们对痕量元素的排放控制效果较好;并着重描述了低温下活性炭、二氧化钛等对气态汞的减排效果。In this paper, an overview of the control of trace element during coal combustion is presented. Firstly, a brief description of the standard of trace elements emission in various combustion sources is given. This is followed by a summarization of the methodologies for trace elements emission control including the control of trace elements using different sorbents, the reactions mechanism between the sorbents and the trace elements, and the methods of the control of the gas phase mercury. Based on a lot of experiments, researchers deduce the mineral sorbents would react with the trace elements by physical adsorption and chemical reaction at high temperatures. Therefore they may reduce the trace elements emission. Finally, a detailed description of the effect of the injection of active carbon and titanic on vapor mercury emission is presented. Fig 1, tables 7 and refs 10.

关 键 词：煤 痕量元素 污染排放控制 吸附剂 

分 类 号：O658[理学—分析化学]