| 脉冲电晕放电协同烟气脱硫脱硝试验研究 |
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| 引用本文： | 曹玮,骆仲泱,徐飞,王鹏,岑可法.脉冲电晕放电协同烟气脱硫脱硝试验研究[J].环境科学学报,2008,28(12):2487-2492. |
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| 作者姓名： | 曹玮 骆仲泱 徐飞 王鹏 岑可法 |
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| 作者单位： | 浙江大学热能工程研究所,能源洁净利用国家重点实验室,杭州,310027 |
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| 基金项目： | 教育部科学技术研究重点项目
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教育部科学技术研究重点项目
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| 摘 要： | 脉冲电晕放电对PM2.5具有一定的凝并作用,与直流静电除尘器相结合可以提高燃煤电厂烟气中粉尘的脱除效率.基于脉冲电晕放电还可以将烟气中的NO、SO2氧化成NO2、SO3等易吸收的物质成分,与传统的液相吸收洗涤技术相结合可提高NO、SO2的脱除效率.文中进行了脉冲电晕放电协同烟气脱硫脱硝的试验研究,研究了影响NO、SO2转化效率的主要因素.实验结果表明,提高脉冲峰值电压、脉冲频率、脉冲放电电极数目.延长停留时间.降低气体初始浓度有助于提高NO、SO2的转化效率;增加空气湿度可以显著提高SO2的转化效率.在本试验中,当NO、SO2初始浓度为150×10-6左右时,其相应的转化效率可以分别达到70%、90%.
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| 关 键 词： | 脉冲电晕放电 脱硫 脱硝 机理 |
| 收稿时间： | 1/30/2008 9:36:40 PM |
| 修稿时间： | 2/2/2008 7:18:46 PM |
Simultaneous removal of NO and SO2 from flue gas by pulsed corona discharge |
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| CAO Wei,LUO Zhongyang,XU Fei,WANG Peng and CEN Kefa.Simultaneous removal of NO and SO2 from flue gas by pulsed corona discharge[J].Acta Scientiae Circumstantiae,2008,28(12):2487-2492. |
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| Authors: | CAO Wei LUO Zhongyang XU Fei WANG Peng and CEN Kefa |
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| Institution: | Institute of Thermal Power Engineering, State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027,Institute of Thermal Power Engineering, State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027,Institute of Thermal Power Engineering, State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027,Institute of Thermal Power Engineering, State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027 and Institute of Thermal Power Engineering, State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027 |
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| Abstract: | The Electrostatic Precipitator (ESP) combined with a pulsed power source can convert NO and SO2 to NO2 and SO3 with increased PM2.5 capture efficiency. Simultaneous removal of NO and SO2 from flue gas by pulsed corona discharge was experimentally investigated. This paper focuses on the main factors influencing NO and SO2 conversion efficiencies. The results indicated that by increasing pulse peak voltage, pulse frequency, number of electrodes, residence time and decreasing initial concentrations, the conversion efficiencies can be improved. High air humidity played an important role in SO2 conversion efficiency. The NO and SO2 conversion efficiencies reached 70% and 90% with initial concentrations of about 150×10-6 in the experimental system. |
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| Keywords: | pulsed corona discharge De-SO2 De-NOx mechanism |
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