Experimental study on mercury removal by non-thermal plasma coupled with CaCl2

被引：0
|
作者：
Zhao W. [1 ]
Duan Y. [1 ]
Zhang J. [1 ]
Zhou Q. [1 ]
机构：
[1] Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Southeast University, Nanjing, 210096, Jiangsu Province
来源：
Duan, Yufeng (yfduan@seu.edu.cn) | 1600年 / Chinese Society for Electrical Engineering卷 / 36期
基金：
中国国家自然科学基金;
关键词：
CaCl[!sub]2[!/sub; Coupling with; Dielectric barrier discharge; Flue gas; Mercury removal efficiency; Mercury species; Non-thermal plasma; Surface-reactions;
D O I：
10.13334/j.0258-8013.pcsee.2016.04.014
中图分类号：
学科分类号：
摘要：
The oxidation of elemental mercury was investigated using dielectric barrier discharge non-thermal plasma (DBD-NTP) technology combined with calcium chloride adsorbent (CaCl2) in the simulated flue gas. The results indicate that most of Hg0 was oxidized by DBD-NTP, and the oxidized mercury was effectively adsorbed by CaCl2. While better mercury removal result is obtained by DBD-NTP coupled with CaCl2, when the specific energy density is about 120 J/L, approximately 98% mercury removal efficiency is observed within a few minutes. The mercury species adsorbed on the CaCl2 was analyzed by temperature programmed desorption (TPD) and energy dispersive spectroscopy (EDS). It is concluded that the mercury species are HgCl2, Hg2O, HgO3 and HgO. In addition to the gas-phase oxidation of Hg0 within DBD-NTP coupled with CaCl2, it was proposed that Cl was stimulated and involved in the Hg0 oxidation process, and the oxidized mercury species can act as an active site to enhance the Hg0 removal through surface-reactions. © 2016 Chin. Soc. for Elec. Eng.
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页码：1002 / 1008
页数：6
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