| 不同煤种再燃过程中脱硝煤耗的试验研究 |
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| 引用本文： | 高正阳,阎维平.不同煤种再燃过程中脱硝煤耗的试验研究[J].动力工程,2009,29(3). |
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| 作者姓名： | 高正阳 阎维平 |
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| 作者单位： | 华北电力大学,能源与动力工程学院,保定,071003
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| 摘 要： | 定义还原1 gNO 消耗的煤量为脱硝煤耗.在煤粉携带炉上进行了再燃试验,对不同煤种、不同工况下的脱硝煤耗进行了研究,分析了挥发分含量、再燃区温度、氧浓度、再燃燃料比等因素对脱硝煤耗的影响.结果表明:脱硝煤耗不仅能直观反映出不同煤种在还原 NO 方面的特性差异,而且还能有效反映再燃过程投入与收益之比;脱硝煤耗随着挥发分含量增加呈线性降低;再燃区氧浓度越低,脱硝煤耗也就越低;在49/6和6%氧浓度条件下,提高再燃燃料比,脱硝煤耗显著下降;在2%氧浓度条件下,提高再燃燃料比,脱硝煤耗增加;再燃区温度升高时,脱硝煤耗下降,并且挥发分越高的煤,脱硝煤耗随温度的变化越显著.
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| 关 键 词： | 携带炉 煤粉 脱硝煤耗 再燃 |
Experimental Study on Coal Consumption of Different Coals During Coal Reburning Process for NO Reduction |
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| GAO Zheng-yang,YAN Wei-ping.Experimental Study on Coal Consumption of Different Coals During Coal Reburning Process for NO Reduction[J].Power Engineering,2009,29(3). |
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| Authors: | GAO Zheng-yang YAN Wei-ping |
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| Affiliation: | School of Energy and Power Engineering;North China Electric Power University;Baoding 071003;China |
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| Abstract: | The coal used to reduce one gram of NO was defined as coal consumption for NO reduction.Reburning tests were conducted on an entrained flow pulverized coal boiler.The coal consumption of different coals for NO reduction under different conditions was studied.The influences of volatile content,reburning zone temperature,oxygen concentration and reburning fuel fraction on coal consumption for NO reduction were analyzed.Results indicate that the coal consumption for NO reduction can not only reflect the charac... |
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| Keywords: | entrained flow boiler pulverized coal coal consumption for NO reduction reburn |
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