硫化铜/聚氨酯海绵静电自组装及烟气脱汞研究  

Mercury Removal by Copper Sulfide/Polyurethane Sponge Prepared by an Electrostatic Assembly Method

作　　者：朱鹏琳 孟凡悦 杨建平 屈文麒 李海龙[1] Zhu Penglin;Meng Fanyue;Yang Jianping;Qu Wenqi;Li Hailong(School of Energy Science and Engineering,Central South University,Changsha 410083,China)

机构地区：[1]中南大学能源科学与工程学院,长沙410083

出　　处：《燃烧科学与技术》2023年第3期295-300,共6页Journal of Combustion Science and Technology

基　　金：国家自然科学基金资助项目(51906260,51776227).

摘　　要：纳米金属硫化物由于表面重构通常带有负电荷,采用静电自组装方法,将其负载到正电荷修饰的聚氨酯海绵上,可获得高通透结构的金属硫化物成型脱汞材料.通过静电吸引方式制备的硫化铜/聚氨酯海绵成型材料(CuS/PUS)最佳脱汞温度为75℃,可用于燃煤电厂烟气净化系统末端脱汞.当空塔速率为2×10^(4)h^(−1)时,也可以保持90%以上的脱汞效率.该研究为制备高通透金属硫化物成型脱汞材料提供了新思路.Nano-metal sulfide is usually negatively charged due to surface reconstruction.A high permeability mercury-removing material was obtained by loading metal sulfide onto a positive charge modified polyurethane sponge by electrostatic self-assembly.The optimum mercury removal temperature of copper sulfide/polyurethane sponge forming material(CuS/PUS)prepared by electrostatic attraction was 75℃,which could be used at the end of the flue gas purification system of the coal-fired power plant.When the superficial velocity was 2×10^(4)h^(−1),the mercury removal efficiency of more than 90%could be maintained.This research provides a new idea for the prepa-ration of high-permeability metal sulfide molding mercury removal materials.

关 键 词：汞 硫化铜 海绵 静电组装 

分 类 号：TK11[动力工程及工程热物理—热能工程]