湿法烟气脱硫系统中氧化态汞的还原和影响机制综述  

REVIEW OF BEHAVIORS AND REDUCTION INHIBITING WAYS OF OXIDIZED MERCURY REDUCTION IN WET FUEL GAS DESULFURIZATION SYSTEM

作　　者：王青峰[1] 王丹[1] 刘越[2] 吴忠标[2] 

机构地区：[1]遵义师范学院,贵州遵义563002 [2]浙江大学,杭州310058

出　　处：《环境工程》2016年第8期84-88,119,共6页Environmental Engineering

基　　金：遵义师范学院博士科研启动基金(遵师BS[2015]06号)

摘　　要：利用湿法脱硫系统协同脱除二价汞是当前燃煤烟气脱汞的重要方法。然而脱硫系统是一个还原系统,吸收进入脱硫浆液中的二价汞会发生再次还原,显著降低汞的脱除效率。就脱硫浆液中二价汞的还原问题,详细阐述了当前研究者在液相二价汞的还原机制、液相离子、气相条件和操作条件等对二价汞还原的影响方面的研究进展。Simultaneous removal of mercury in wet fuel gas desulfurization（ WFGD） system becomes an important way to control mercury emission. However,as there are many reducing agents in WFGD slurry（ such as sulfite ions）,a portion of absorbed oxidized mercury may be deoxidized into Hg^0 and re-emission to the atmosphere,thereby significantly reducing the removal efficiency. This paper mainly introduces current researches about the reduction mechanism of oxidized mercury and the effect of liquid ions,fuel gas composition and operating conditions on oxidized mercury reduction.

关 键 词：湿法脱硫系统 氧化态汞 还原 液相离子 还原抑制 

分 类 号：X701[环境科学与工程—环境工程]