1000MW超超临界机组锅炉燃烧优化试验研究
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摘要
针对某电厂1000MW机组锅炉存在的燃烧不均匀问题,进行了深入的燃烧优化试验,包括燃烧器配风优化,一次风量运行优化,煤粉细度调整和锅炉整体配风调整,得到了最佳运行控制曲线。在不同负荷工况下的燃烧试验表明,燃烧优化后,风机电耗下降,NO_x排放量下降,锅炉排烟热损失及固体不完全燃烧热损失均下降,锅炉效率提高,优化效果良好。
Aiming at the problem of uneven combustion in a 1000-MW ultra supercritical boiler,the in-depth combustion optimization tests are conducted,including combustion air distribution optimization,primary air volume optimization,coal powder fineness adjustment and total combustion air distribution adjustment.Through the tests,the optimal operation curve is obtained.The combustion test under different load conditions exhibits that after the combustion optimization,the fan power consumption,the NO_x emissions as well as the heat losses of exhaust flue gas and unburned carbon are all reduced.Hence the boiler efficiency is improved and the effectiveness of the combustion optimization is verified.
Aiming at the problem of uneven combustion in a 1000-MW ultra supercritical boiler,the in-depth combustion optimization tests are conducted,including combustion air distribution optimization,primary air volume optimization,coal powder fineness adjustment and total combustion air distribution adjustment.Through the tests,the optimal operation curve is obtained.The combustion test under different load conditions exhibits that after the combustion optimization,the fan power consumption,the NO_x emissions as well as the heat losses of exhaust flue gas and unburned carbon are all reduced.Hence the boiler efficiency is improved and the effectiveness of the combustion optimization is verified.
引文
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[9]宋兆龙.金键.煤质成分在线检测技术的最新进展[J].热能动力工程,2002,17(5):458-461.SONG Zhaolong,JIN Jian.Recent advances in the on-line detection technology of coal elemental composition[J].Journal of Engineering for Thermal Energy and Power,2002,17(5):458-461.
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[2]杨震.庄恩如,曹子栋.600 MW超临界直流锅炉的燃烧调整试验[J].动力工程,2007,27(4):502-506.YANG Zhen,ZHUANG Enru,CAO Zidong.Combustion adjustment of a 600 MW supercritical once-through boiler[J].Journal of Power Engineering,2007,27(4):502-506.
[3]陆莹,王达峰.600 MW机组超临界锅炉燃烧调整试验[J].热力发电,2007.29(7):29-31.LU Ying,WANG Dafeng.Combustion adjustment test for supercritical boiler of 600 MW unit[J].Thermal Power Generation,2007,29(7):29-31.
[4]龚和,刘安堂,方晓东.600 MW超临界机组锅炉燃烧优化调整方法[J].华东电力.2010,38(9):1463-1465.GONG He,LIU Antang,FANG Xiaodong.Combustion optimization adjustment method for 600 MW supercritical unit[J].East China Electric Power,2010,38(9):1463-1465.
[5]陈炳话.张颉.孙锐,等.运行参数对锅炉煤粉着火燃烧和飞灰含碳量影响的数值研究[J].动力工程,2004.24(4):470-476.CHEN Binghua,ZHANG Jie,SUN Rui,et al.Numerical study of operation parameters on pulverized coal ignition and unbumed carbon in fly ash for a boiler[J].Power Engineering,2004,24(4):470-476.
[6]王热.郭春源,王伍泉.利用“双尺度”燃烧技术进行燃烧器改造[J].华北电力技术,2011(1):41-44.WANG Re,GUO Chunyuan,WANG Wuquan.Burner reformation based on double-scale combustion[J].North China Electric Power,2011(1):41-44.
[7]应明良,潘国清,藏成峰,等.600 MW机组四角切圆锅炉低氮燃烧改造及运行调整[J].中国电力,2012,45(4):54-58.YING Mingliang,PAN Guoqing,DAI Chengfeng,et al.Low NO,combustion reformation and operation adjustment in 600 MW tangential firing boiler[J].Electric Power,2012,45(4):54-58.
[8]屠小宝,胡伟锋,徐良,等.国内首台600 MW对冲燃烧锅炉低NO,燃烧技术改造[J].中国电力,201l,44(6):31-33.TU Xiaobao,HU Weifeng,XU Liang,et al.Technical retrofit of low NO,combustion for first 600 MW opposed firing boiler in China[J].Electric Power,2011,44(6):31-33.
[9]宋兆龙.金键.煤质成分在线检测技术的最新进展[J].热能动力工程,2002,17(5):458-461.SONG Zhaolong,JIN Jian.Recent advances in the on-line detection technology of coal elemental composition[J].Journal of Engineering for Thermal Energy and Power,2002,17(5):458-461.
[10]刘福国.郝卫东,韩小岗,等.基于烟气成分分析的电站锅炉入炉煤质监测模块[J].燃烧科学与技术,2002,8(5):441-445.LIU Fuguo,HAO Weidong,HAN Xiaogang,et al.Model of monitoring coal grade for utility boiler basing on flue gas composilional measurement[J].Journal of Combustion Science and Technology,2002,8(5):441-445.