烟气脱汞技术现状简述

Brief Discussion on the Present Status of Flue Gas Mercury Removal Technology

火力发电厂是我国最主要的烟气排放源,期间微量元素汞将以不同的形式排放到大气中,对环境造成很大的危害。汞控制技术一般分为燃烧前脱汞,燃烧中脱汞及燃烧后脱汞。燃烧后脱汞是汞控制技术的主要方式,近些年研究异常活跃,主要表现在2个方面:一方面加强了各种吸收剂的研究,另一方面加强利用现有的脱硫装置脱汞的研究。

Electric power is the main flue gas discharge source and mercury,the trace element,is discharged into atmosphere in different forms,which causes great harms to the environment.There are generally three ways to control mercury emissions： combustion mercury removal,pre-and post-combustion mercury removal. Post-combustion is the main method and it is mostly used and widely concerned in recent research,which includes two parts： to conduct research on all kinds of absorbents and on the utilization of the present deaulfurization devices to remove mereury.