| CO含量对烟气选择性非催化还原反应的影响 |
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| 引用本文： | 吕洪坤,杨卫娟,周俊虎,周志军,刘建忠,岑可法.CO含量对烟气选择性非催化还原反应的影响[J].化工学报,2009,60(7):1773-1780. |
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| 作者姓名： | 吕洪坤 杨卫娟 周俊虎 周志军 刘建忠 岑可法 |
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| 作者单位： | 浙江大学能源清洁利用国家重点实验室 |
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| 基金项目： | 国家杰出青年科学基金项目(50525620);;国家重点基础研究发展计划项目(2006CB200303)~~ |
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| 摘 要： | 分别以氨水和尿素溶液作为还原剂，在管式反应器上详细研究了CO含量对烟气SNCR（选择性非催化还原）脱硝性能的影响。结果表明，CO含量增加导致：（1）SNCR脱硝温度窗口和最佳脱硝温度向低温方向移动，同时脱硝温度窗口宽度变窄、最大脱硝效率降低，尤其是以氨水作为还原剂时更为突出；（2）N2O排放的峰值升高；当以尿素溶液作还原剂时，N2O排放温度窗口主要向低温方向扩展；当以氨水作还原剂时，N2O排放温度窗口向低温和高温两个方向扩展；（3）NH3及HNCO残留量曲线向低温方向移动。维持相同的φ（CO）/φ（urea），氨氮比增加将导致最佳脱硝温度略微降低。氨氮比或氧含量的变化对NOx、N2O、NH3及HNCO的排放趋势没有影响。
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| 关 键 词： | NOx 选择性非催化还原 尿素 氨水 CO |
| 收稿时间： | 2008-12-18 |
| 修稿时间： | 2009-3-26
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Effects of CO content on selective non-catalytic reduction of NOx |
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| L Hongkun,YANG Weijuan,ZHOU Junhu,ZHOU Zhijun,LIU Jianzhong,CEN Kefa.Effects of CO content on selective non-catalytic reduction of NOx[J].Journal of Chemical Industry and Engineering(China),2009,60(7):1773-1780. |
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| Authors: | L Hongkun YANG Weijuan ZHOU Junhu ZHOU Zhijun LIU Jianzhong CEN Kefa |
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| Affiliation: | State Key Laboratory of Clean Energy Utilization;Zhejiang University;Hangzhou 310027;Zhejiang;China |
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| Abstract: | An experimental study on the effects of CO content on selective non-catalytic reduction(SNCR)of NOx was performed in a quartz tube reactor,using ammonia and urea solution as N-agent.The results showed that as the CO content increased:(1)Both the SNCR temperature window and the optimal DeNOx temperature shifted towards a lower temperature.Simultaneously,the temperature window was narrowed and the optimal DeNOx efficiency decreased,especially when using ammonia as reductant.(2)The peak of N2O emission became ... |
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| Keywords: | NOx selective non-catalytic reduction urea ammonia CO |
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