燃煤砷污染和抑制研究进展

ADVANCE OF POLLUTION AND RETENTION OF ARSENIC IN COAL COMBUSTION

对煤燃烧过程中微量砷的污染和抑制的国内外研究现状进行了综述 .概述了煤燃烧过程中微量砷的排放对环境产生的危害 .分析了煤中砷在燃烧过程中不同温度下的转化形态 ,烟气中砷的主要存在形态 ,以及煤中砷在燃烧产物中的配置和主要影响因素 .给出了美国不同电站的燃煤锅炉、工业燃煤锅炉以及民用燃煤锅炉砷的排放因子 .探讨了不同吸附剂与含砷化合物的作用机理 ,以及减少燃煤过程中砷污染的可行性 .

An overview of pollution and retention of trace in coal combustion is presented in this paper.The environmental pollution and the harm on human being health of trace arsenic in coal combustion are reviewed.Arsenic transformation and partitioning in coal combustion systems as well as the species of arsenic in flue gas are discussed.And the arsenic emission factors for coal fired utility boilers,for coal fired industrial boilers,and for coal fired commercial/instiutional boiles in USA are displayed.Finally the mechanism of arsenic sorption with different sorbents and the feasibility of decreasing arsenic emission by sorbents in coal combustion are put forward.Research on trace arsenic emission in coal combustion should be taken into account.\;