UV/TiO2光催化氧化工艺脱汞的试验研究  

Experimental investigation of demercuration by UV/TiO2 photocatalytic technology

作　　者：常峥峰 王虎 张波[2] 纵宇浩 黄力 江晓明 董云山[2] 司风琪[2] Chang Zhengfeng;Wang Hu;Zhang Bo;Zong Yuhao;Huang Li;Jiang Xiaoming;Dong Yunshan;Si Fengqi(Datang Nanjing Environmental Protection Technology Co.,Ltd.,Nanjing 211100,Jiangsu,China;Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education,School of Energy and Environment,Southeast University,Nanjing 210096,Jiangsu,China)

机构地区：[1]大唐南京环保科技有限责任公司,江苏南京211111 [2]东南大学能源热转换及其过程测控教育部重点实验室,能源与环境学院,江苏南京210096

出　　处：《工业催化》2020年第1期70-74,共5页Industrial Catalysis

基　　金：江苏省科技成果转化专项资金项目(BA2017095);中国博士后科学基金面上项目(2019M651632);江苏省博士后科研资助计划(2018K076C)

摘　　要：UV/TiO2光催化技术在TiO2催化剂的作用下可将烟气中Hg^0氧化脱除。利用自制的UV/TiO2氧化试验台研究了影响Hg^0去除率的相关因素,结果表明,在无催化剂和有紫外灯情况下可脱除少量Hg^0;Hg^0去除率随催化剂活性组分含量的增加而上升,但上升速率逐渐下降;在温度(50~200)℃范围内,Hg^0去除率无明显变化;Hg^0去除率随着Hg^0初始浓度的升高逐渐下降;Hg^0去除率随着烟气中氧含量先上升后趋于不变。UV/TiO2氧化工艺脱汞可为燃煤电厂烟气脱汞提供理论指导。UV/TiO2 photocatalytic technology can oxidize Hg^0 in flue gas by TiO2 catalyst.In this paper,the related factors of Hg^0 removal rate were studied by self-made UV/TiO2 oxidation test bench.The results show that a small amount of Hg^0 can be removed without catalyst and UV lamp.The removal efficiency increases with the increase of catalyst active component content.However,the rate of ascending decreases gradually.In the experimental temperature range of(50-200)℃,the removal efficiency does not change significantly.While the removal efficiency decreases with the increase of the initial concentration of Hg^0.The removal efficiency tends to increase to a constant with the increase of oxygen content in the flue gas.Therefore,the oxidation process can provide theoretical guidance for mercury removal from coal-fired power plants.

关 键 词：大气污染防治工程 光催化技术 烟气 脱汞 

分 类 号：TQ034[化学工程] X701[环境科学与工程—环境工程]