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反应条件对六氨合钴同时脱硫脱硝效果的影响
引用本文:刘振,李清海,马智鑫,张衍国,TAN Zhongchao.反应条件对六氨合钴同时脱硫脱硝效果的影响[J].中国电力,2016,49(10):119-122.
作者姓名:刘振  李清海  马智鑫  张衍国  TAN Zhongchao
作者单位:1. 清华大学 热能工程系,热科学与动力工程教育部重点实验室,北京 100084; 2. 河北省建投承德热电有限责任公司,河北 承德 067000; 3. Department of Mechanical & Mechatronics Engineering, University of Waterloo, Ontario, N2L 3G1
基金项目:国家国际科技合作专项资金资助项目(No. 2015DFG61910);国家自然科学基金资助项目(No. 91434119)
摘    要:钴氨络合剂可同时脱除SO2和NO,对燃煤电厂排放控制有积极意义。在分析钴氨配合物同时脱硫脱硝反应机理的基础上,设计了同时脱硫脱硝实验装置,在反应器中对Co(NH3)6]Cl2吸收剂同时脱硫脱硝的影响因素进行实验研究。结果表明:提高Co(NH3)6]Cl2的浓度可以提高SO2和NO的去除率;过高温度不利于NO的吸收,实验过程中48 ℃时NO的去除率最高;碱性溶液可促进NO的氧化,但是碱性过强导致配合物不稳定,会降低NO的去除率,实验条件下溶液最佳pH值为9.88。

关 键 词:燃煤电站  排放控制  同时脱硫脱硝  钴氨络合剂  模拟试验  
收稿时间:2016-02-26

Impact of Reaction Conditions on Simultaneous Desulfurization and Denitrification Using Hexa-Amminecobalt Complexes
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.
Authors:LIU Zhen  LI Qinghai  MA Zhixin  ZHANG Yanguo  TAN Zhongchao
Affiliation:1. Key Laboratory of Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China; 2. Jointo Engergy Investment Co., Ltd., Chengde 067000, China;3. Department of Mechanical & Mechatronics Engineering, University of Waterloo, Ontario N2L 3G1, Canada
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.
Keywords:coal-fired power plant  emission control  simultaneous desulfurization and denitrification  cobalt ammonia complexing agent  simulation experiment  
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