期刊文献+

活性炭纤维负载型离子液体脱汞性能研究 被引量:2

Study on mercury removal performance of activated carbon fiber supported ionic liquid
下载PDF
导出
摘要 采用过量浸渍法将氯化1-丁基-3-甲基咪唑(BmimCl)负载于活性炭纤维(ACF)制得活性炭纤维负载型离子液体吸附剂(ACF-BmimCl)。将制得的吸附剂置于湿法烟气脱硫(WFGD)系统下游进行Hg0吸附实验。研究结果表明:在活性炭纤维载体上负载离子液体可以显著提高其脱汞性能,离子液体负载质量分数约为1%时脱汞效果最好;O2对ACF-1%BmimCl吸附Hg0具有明显的促进作用;CO2和NO在浓度较低时可促进ACF-1%BmimCl吸附脱除Hg0,但浓度较高时则会与Hg0发生竞争吸附,导致ACF-1%BmimCl脱汞效率降低;SO2对ACF-1%BmimCl吸附Hg0具有明显的抑制作用。同时,热重分析、扫描电子显微镜(SEM)及傅里叶红外光谱(FTIR)分析结果表明离子液体负载型吸附剂具有较好的热稳定性,BmimCl可以稳定负载于ACF表面,并可通过化学反应稳定吸附汞。 An activated carbon fiber supported ionic liquid adsorbent(ACF-BmimCl)was prepared by supporting 1-butyl-3-methylimidazolium chloride(BmimCl)on activated carbon fibers(ACF)via excessive impregnation.The prepared adsorbent was placed downstream of the wet flue gas desulfurization(WFGD)system to adsorb elemental mercury.The results show that supporting of ionic liquid on activated carbon fiber can significantly improve its mercury removal performance.The adsorbent has the highest removal efficiency of mercury when the ionic liquid mass fraction is 1%.O2 exhibits obvious promoting effect for Hg0 adsorbing on the surface of ACF-1%BmimCl.The presence of CO2 and NO can promote the adsorption of Hg0 by ACF-1%BmimCl at a lower concentration.There is competitive adsorption between CO2 and Hg0 or NO and Hg0 when the CO2 and NO concentration is higher,leading to a decrease in the Hg0 removal efficiency of ACF-1%BmimCl.SO2 has a significant inhibiting effect on the adsorption of Hg0 by ACF-1%BmimCl.Moreover,thermo gravimetric analysis,scanning electron microscope(SEM)and Fourier infrared spectroscopy(FTIR)analysis results show that the supported ionic liquid adsorbent has good thermal stability.BmimCl can be fixed on the surface of adsorbent stably and can adsorb Hg0 via chemical reactions.
作者 于江怀 鲍静静 许家菱 罗紫菱 唐继国 孙立成 YU Jianghuai;BAO Jingjing;XU Jialing;LUO Ziling;TANG Jiguo;SUN Licheng(State Key Laboratory of Hydraulics and Mountain River Engineering,College of Water Resource&Hydropower,Sichuan University,Chengdu 610065,China;Faculty of Engineering,University of Nottingham,Nottingham NG72TU,UK)
出处 《中南大学学报(自然科学版)》 EI CAS CSCD 北大核心 2021年第1期124-132,共9页 Journal of Central South University:Science and Technology
基金 国家自然科学基金资助项目(51506099,51706149,51709191) 中央高校基本科研业务费专项资金资助项目(YJ201659)。
关键词 离子液体 吸附剂 烟气 活性炭纤维 ionic liquid adsorbent mercury flue gas activated carbon fibers
  • 相关文献

参考文献8

二级参考文献80

共引文献70

同被引文献31

引证文献2

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部