Experimental Study on Mercury Removal Performance of Diatomite Modified With Cupric Bromide

被引：0

作者：

Liu, Huan ^{[1
]}

Zhao, Yong-Chun ^{[1
]}

Zhang, Jun-Ying ^{[1
]}

Zheng, Chu-Guang ^{[1
]}

机构：

[1] State key Laboratory of Coal Combustion, School of Energy and Power Engineering, Huazhong University of Science & Technology, Wuhan,430074, China

来源：

Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics | 2020年 / 41卷 / 01期

关键词：

Efficiency - Flue gases - Chlorine compounds - Chemical reactors - Mercury compounds - Bromine compounds - Mercury (metal);

D O I：

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学科分类号：

摘要：

Novel mercury removal absorbents (CuBr2-Dia) were prepared by modifying diatomite with copper bromide (CuBr2), and its ability to remove elemental mercury was studied on a bench-scale fixed-bed reactor system. In addition, effects of different temperatures and flue gas components on mercury removal efficiency of CuBr2-Dia3 were also studied. Results showed that mercury removal performances of the three kinds of diatomite in pure N2 atmosphere have been significantly improved after modification and that of CuBr2-Dia3 was the highest. The best reaction temperature of CuBr2-Dia3 to remove mercury was 140℃. The absorbed mercury on the surface of CuBr2-Dia3 had at least two states and great thermal stability. The synergy of O2 and HCl had a positive effect. NO also had a strong promotion effect. When 0.03% NO was added into pure N2, the mercury removal efficiency of CuBr2-Dia3 was increased from 92.5% to 96.0%. SO2 had a significant inhibitory effect. 0.12% SO2 reduced its mercury removal efficiency to 59.7%, while the addition of 4% O2 and 0.03% NO restored its mercury removal efficiency to its original level. © 2020, Science Press. All right reserved.

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页码：246 / 252