Hg^(0)在CuCl_(2)-ZSM-5分子筛上的吸附与动力学研究  

Study on Adsorption and Kinetics of CuCl_(2)-ZSM-5 Molecular Sieve for Mercury

作　　者：张迎宾[1,2] 马威 赵珠宇 Zhang Yingbin;Ma Wei;Zhao Zhuyu(School of Energy and Mechanical Engineering,Jiangxi University of Science and Technology,Nanchang 330013,China;Jiangxi Key Laboratory of Mining Pollution Controlling,Ganzhou 341000,China)

机构地区：[1]江西理工大学能源与机械工程学院,江西南昌330013 [2]江西省矿冶环境污染控制重点实验室,江西赣州341000

出　　处：《科学技术创新》2022年第28期37-40,共4页Scientific and Technological Innovation

基　　金：江西省教育厅基金项目(GJJ180493)。

摘　　要：采用CuCl_(2)对ZSM-5分子筛掺杂改性制得CuCl_(2)-ZSM-5分子筛脱汞吸附剂,通过脱汞反应系统测试其对气相零价汞的吸附性能,并考察其在吸附剂投加量、吸附反应温度、气流流量等因素下吸附Hg^(0)的动力学实验和动力学模型。结果表明:改性后的CuCl_(2)-ZSM-5分子筛可以显著提高对Hg^(0)的脱除性能。考虑吸附剂投加量、反应温度、气流流量等因素变化对脱汞动力学的影响结果发现,准一级和准二级动力学模型和实验数据拟合均有较好的线性相关性,说明Hg^(0)在CuCl_(2)-ZSM-5分子筛中的吸附过程包含物理、化学多类型吸附。CuCl_(2)-ZSM-5 molecular sieve mercury removal adsorbent was prepared by doping and modifying ZSM-5 molecular sieve with CuCl_(2).The adsorption performance of CuCl_(2)-ZSM-5 molecular sieve for gaseous zero valent mercury was tested by mercury removal reaction system,and the kinetic experiment and kinetic model of Hg^(0)adsorption under the factors of adsorbent dosage,adsorption reaction temperature and gas flow were investigated.The results show that the modified CuCl_(2)-ZSM-5 molecular sieve can significantly improve the removal performance of Hg^(0).Considering the influence of adsorbent dosage,reaction temperature,gas flow rate and other factors on mercury removal kinetics,it is found that the quasi first-order and quasi second-order kinetic models have good linear correlation with the experimental data fitting,indicating that the adsorption process of Hg^(0)in CuCl_(2)-ZSM-5 molecular sieve includes physical and chemical adsorption.

关 键 词：Hg^(0) CuCl2-ZSM-5分子筛 吸附 动力学 

分 类 号：X701[环境科学与工程—环境工程] X511