Impact of Reaction Conditions on Simultaneous Desulfurization and Denitrification Using Hexa-Amminecobalt Complexes

doi:10.11930/j.issn.1004-9649.2016.10.119.04

Abstract

Abstract: By using cobalt ammonia complexing agent SO2 and NO can be removed simultaneously, which is of great significance for the emission control of coal power plants. Based on the analysis of the reaction mechanism of simultaneous desulfurization and denitrification with cobalt ammonia complexing agent, the experimental device is designed such that the major factors affecting [Co(NH3)6]Cl2 absorbent can be explored. The experimental results show that increasing the [Co(NH3)6]Cl2 concentration can improve the removal efficiency of SO2 and NO while extraordinarily high temperatures are disadvantageous to NO absorption. During the experiment, it is observed that the removal efficiency of NO reaches maximum at the temperature of 48 ℃. In addition, alkaline solutions can promote the oxidation of NO, while too strong alkaline solutions may cause instability of complexes and reduce the NO removal efficiency. Under the experimental conditions the best pH value of solution is 9.88.

Key words: coal-fired power plant, emission control, simultaneous desulfurization and denitrification, cobalt ammonia complexing agent, simulation experiment

CLC Number:

TM621
X511

LIU Zhen, LI Qinghai, MA Zhixin, ZHANG Yanguo, TAN Zhongchao. Impact of Reaction Conditions on Simultaneous Desulfurization and Denitrification Using Hexa-Amminecobalt Complexes[J]. Electric Power, 2016, 49(10): 119-122.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2016.10.119.04

https://www.electricpower.com.cn/EN/Y2016/V49/I10/119

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