广东电力2017，Vol.30Issue(9)：9-14,6.DOI:10.3969/j.issn.1007-290X.2017.09.002
低负荷时炉膛出口氧量和燃烧器摆角对锅炉性能的影响
Influence of Exit Oxygen and Burner Angle on Boiler Performance Under Low Load
摘要
Abstract
In allusion to different operation modes of the burner,one 600 MW boiler was taken as a research object for field test and numerical simulation on influence of exit oxygen and burner angle on boiler performance under 350 MW low load condition. Results indicate reduction of total air volume in the furnace has caused furnace exit oxygen reduce,and delay of combustion in the main burning zone has resulted in rise of flue gas temperature on upper furnace and at its exit within a cer-tain range. In addition,combustion flame center in the furnace moves up after the burner angle swings up and reheat steam temperature rises,which may improve efficiency of the unit. Meanwhile,changes of the burner angle and exit oxygen may affect flue gas temperature deviation at the exit of furnace. By comparing results of numerical simulation and filed test,it is concluded when ABCE burners are in operation as well as exit oxygen is set at about 4.2% and the burner angle swings up at about 5.56°,characteristic of the overall gas temperature is better. While when BCDE burners are in operation as well as ex-it oxygen is set at about 3.2% and the burner angle swings down at about 2.4°,characteristic of the overall gas temperature is better.关键词
锅炉性能/氧量/摆角/烟气温度偏差/数值模拟/低负荷Key words
boiler performance/oxygen/burner angle/flue gas temperature deviation/numerical simulation/low load分类
能源科技引用本文复制引用
李壮扬,周旭,刘宇浓,张中建,谭鹏,张成,方庆艳,陈刚..低负荷时炉膛出口氧量和燃烧器摆角对锅炉性能的影响[J].广东电力,2017,30(9):9-14,6.基金项目
国家自然科学基金资助项目(51676076) （51676076）
