【作者】 沙成豪； 张冬冬； 谭波； 冯天彦； 杨志杰； 宁平；

【Author】 Sha Chenghao;Zhang Dongdong;Tan Bo;Feng Tianyan;Yang Zhijie;Ning Ping;School of Environmental Science and Engineering, Kunming University of Science and Technology;

【机构】 昆明理工大学环境科学与工程学院；

【摘要】 大气汞污染问题日益突出,已成为迫切需要解决的重大环境问题。工业烟气是汞排放的主要来源,目前国内外烟气脱汞技术主要有吸附法和催化氧化法,这些技术通常采用分级串联的方法单独脱除汞,脱汞成本太高、系统复杂,现实意义不明显。湿法脱硫系统在我国应用广泛,同时也具有一定的协同脱汞能力,所以利用湿法脱硫系统协同脱汞具有重要的现实意义。综述了目前烟气脱汞技术和湿法脱硫系统协同脱汞的研究进展。论述了湿法脱硫系统协同脱汞存在的问题,阐述了脱硫浆液中Hg²⁺还原再释放的机理和特性,概述了改变湿法脱硫系统工艺条件来提高湿法脱硫系统协同脱汞效率的方法,最后对湿法脱硫系统协同脱汞进行了总结和展望。更多还原

【Abstract】 The problem of atmospheric mercury pollution has become increasingly prominent and has become a major environmental problem that urgently needs to be solved.Industrial flue gas is the main source of mercury emission.at present,the main technologies of mercury removal from flue gas at home and abroad are adsorption and catalytic oxidation, which are usually removed separately by step-by-step series method, which has high cost and complex system, and the practical significance is not obvious.Wet desulfurization system is widely used in China, and it also has a ability of cooperative mercury removal, so it is of great practical significance to use wet desulfurization system to remove mercury.The research progress of synergistic mercury removal by flue gas mercury removal technology and wet desulfurization system is reviewed in this paper.This paper discusses the problems existing in the cooperative mercury removal of the wet desulfurization system, expounds the mechanism and characteristics of the reduction and re-release of Hg²⁺ in the desulfurization slurry, and summarizes the methods to improve the cooperative mercury removal efficiency of the wet desulfurization system by changing the process conditions of the wet desulfurization system.Finally, the cooperative mercury removal of the wet desulfurization system is summarized and prospected.更多还原