| 再燃降低NO_x排放及煤粉燃尽特性研究 |
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| 引用本文： | 苏胜,向军,孙路石,胡松,邱建荣,汪一.再燃降低NO_x排放及煤粉燃尽特性研究[J].工程热物理学报,2009,30(10). |
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| 作者姓名： | 苏胜 向军 孙路石 胡松 邱建荣 汪一 |
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| 作者单位： | 华中科技大学煤燃烧国家重点实验室,湖北武汉,430074 |
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| 基金项目： | 国家自然科学基金，国家杰出青年基金项目资助 |
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| 摘 要： | 以包含两种低挥发份贫煤在内的四种煤作为主燃料,在一维炉和一台93 kW卧式单角炉上对气体燃料再燃过程及煤粉和再燃燃料的燃尽特性进行了详细实验研究,同时对炉膛内NO_x浓度分布等进行了测量和分析.实验发现,再燃过程除了要采用合适再燃区停留时间外,气体再燃燃料还应选择在炉膛内NO_x浓度较大区域内喷入,以提高再燃脱硝效率.实验结果表明,即使采用低挥发份煤作为主燃料,当再燃区停留时间达到约0.7～0.9 s,气体再燃燃料比例达到10%～15%时,气体燃料再燃过程就能在保证煤粉颗粒燃尽率不明显降低前提下,获得50%以上的再燃脱硝效率.
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| 关 键 词： | 一维炉 单角炉 再燃 氮氧化物 |
NO_x REDUCTION AND BURNOUT CHARACTERISTICS OF COAL IN RE-BURNING PROCESS |
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| SU Sheng,XIANG Jun,SUN Lu-Shi,HU Song,QIU Jian-Rong,WANG Yi.NO_x REDUCTION AND BURNOUT CHARACTERISTICS OF COAL IN RE-BURNING PROCESS[J].Journal of Engineering Thermophysics,2009,30(10). |
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| Authors: | SU Sheng XIANG Jun SUN Lu-Shi HU Song QIU Jian-Rong WANG Yi |
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| Institution: | SU Sheng XIANG Jun SUN Lu-Shi HU Song QIU Jian-Rong WANG Yi (State Key Laboratory of Coal Combustion,Huazhong University of Science and Technology,Wuhan 430074,China) |
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| Abstract: | Experimental studies of gaseous fuel re-burning process and the burnout characteristics of coal are performed in an one-dimensional furnace and a 93 kW single-burner furnace when four coals including two low-volatile lean coals served as the primary fuel.The profiles of NO_x concentration are also measured and analyzed.It is found that the injection position of the gaseous re-burnt fuel should be higher NO_x concentration to improve the NO_x reduction efficiency.The experimental results show that both NO_x ... |
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| Keywords: | one-dimensional furnace single-burner furnace re-burning nitrogen oxides |
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