摘要
基于燃煤电厂现有设备,根据不同形态汞的特殊物化性质,分别介绍了湿法脱硫系统和选择性催化还原脱硝装置对元素态汞的氧化、湿法脱硫系统固定氧化态汞等技术的研究现状。文章分析了WFGD中氧气、SCR催化剂组分等因素对氧化Hg^0的影响,阐述了不同添加剂对于抑制脱硫浆液中Hg^(2+)再还原的效果。最后根据燃煤电厂烟气脱汞技术的发展需要,提出发展设备分工式脱除非颗粒态汞的研究方向。
Based on existing equipment of coal-fired power plants,the status of the oxidation of Hg^0 by the desulfurization and denitrification system and the capture of Hg^2＋ by WFGD are introduced respectively,on the basis of the special physical and chemical properties of different forms of mercury. This paper analyzes the effects of oxygen in WFGD and the SCR catalyst components on the oxidation of Hg^0 and illustrates the effects of different additives on inhibiting the re-reduction of Hg^2＋ in desulfurization slurry. Finally according to the development need of mercury removal technology in coal-fired flue gas,a new direction for the development of equipment division type is proposed to remove non-particulate mercury.
出处
《工业安全与环保》
北大核心
2016年第12期79-81,94,共4页
Industrial Safety and Environmental Protection
基金
国家863计划资助项目(2013 AA65403)
北京落地培育项目(Z151100002815012)
关键词
非颗粒态汞
Hg^0的氧化
Hg^2+再还原
设备分工式脱汞
non-particulate mercury
oxidation of Hg^0
re-reduction of Hg^2＋
equipment division type to removal of mercury
