| ENERGY AND POWER ENGINEERING |
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Effect of SO2 and CO2 on NO removal efficiency by the hexamminecobalt(II) complex in a bubble column |
| LIU Zhen1, LI Qinghai1, ZHU Qunyi2, TAN Zhongchao3, ZHANG Yanguo1 |
1. Tsinghua University-University of Waterloo Joint Research Center for Micro/Nano Energy & Environment Technology, Key Laboratory of Thermal Science and Power Engineering of Ministry of Education, Department of Energy and Power Engineering, Tsinghua University, Beijing 100084, China;
2. School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China;
3. Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo N2L3G1, Canada |
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Abstract The effects of SO2 and CO2 in the flue gas and their reaction products with ammonia, SO32- and CO32-, on the NO removal efficiency of the hexamminecobalt(Ⅱ) complex were studied experimentally using a bubble column reactor with the hexamminecobalt(Ⅱ) complex absorbing NO. The effects of SO2 and CO2 on the NO removal efficiency were studied using various SO2 and CO2 concentrations in the flue gas with the effects of SO32- and CO32- on the NO removal efficiency studied with various concentrations of SO32- and CO32- into the hexamminecobalt(Ⅱ) solution. The experimental results show that SO2 and CO2 in the flue gas reduce the NO removal efficiency with the NO removal efficiency reduced 46% for a CO2 mass concentration of 100 g/m3 and an SO2 mass concentration of 2 646 mg/m3. The SO32- and CO32- formed in the solution also reduce the NO removal efficiency. The NO removal efficiency is reduced by 72% for an SO32- molarity of 0.03 mol/L and by 41% for a CO32- molarity of 0.50 mol/L.
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| Keywords
NO removal efficiency
bubble column
hexamminecobalt(II) complex
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Issue Date: 19 September 2018
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2018,
Vol. 58
