沈亚洲,付忠广,石黎,王瑞欣

• 1:华北电力大学电站设备状态监测与控制教育部重点实验室

摘要(Abstract)：

采用数值模拟方法研究了干式低排放(DLE)燃烧室的流场结构及不同当量比对燃烧室内燃烧及污染物生成特性的影响。结果表明:中心回流区的高温回流燃气形成稳定的点火源,保证了燃料的着火和稳定燃烧;随着当量比的增大,燃烧室内流场变化较小,整体轴向速度略有增加,回流区范围基本不变;温度场变化较大,高温区明显扩大,整体温度上升,出口截面温度分布出现不对称的现象,下半侧高温区域面积略大于上半侧;出口NO_x排放摩尔分数明显上升,整体NO_x摩尔分数迅速上升,中心回流区附近增幅最为明显;旋流器的导向作用使燃烧室温度和热力型NO_x分布不均;降解当量比对控制DLE燃烧室NO_x排放有利。

关键词(KeyWords)： 燃气轮机;干式低排放燃烧室;热力型NOx预混燃烧;当量比;NOx排放;数值模拟

Abstract:

Keywords:

基金项目(Foundation): 北京市自然基金面上项目(3162030)~~

作者(Author): 沈亚洲,付忠广,石黎,王瑞欣

参考文献(References)：

• [1]许洪雪.贫燃预混旋流火焰的非稳态燃烧行为研究[D].大连:大连理工大学,2014:2-3.XU Hongxue.Study on behavior of unstable combustion of lean premixed swirl flame[D].Dalian:Dalian University of Technology,2014:2-3.
• [2]邢双喜.微小型燃气轮机径向旋流预混燃烧特性研究[D].北京:中国科学院,2012:74-87.XING Shuangxi.Investigation on premixed combustion characteristics with radial swirler in micro gas turbine[D].Beijing:Chinese Academy of Sciences,2012:74-87.
• [3]王峰,肖俊峰,王玮,等.燃气轮机燃烧过程中污染物排放影响规律研究[J].热力发电,2015,44(5):26-29.WANG Feng,XIAO Junfeng,WANG Wei,et al.Influence of combustion on pollutant discharge of gas turbines[J].Thermal Power Generation,2015,44(5):26-29.
• [4]王迪.燃气轮机燃烧室污染生成的数值分析[D].北京:中国科学院,2010:40-54.WANG Di.The numerical study on combustion emission for gas turbine combustor[D].Beijing:Chinese Academy of Sciences,2010:40-54.
• [5]谢岳生,胡国菊,郭培卿,等.当量比变化对合成气双旋流喷嘴燃烧火焰特征的影响[J].动力工程学报,2012(6):458-462.XIE Yuesheng,HU Guoju,GUO Peiqing,et al.Sygas flame structures of a dual-swirled burner at different equivalent ratios[J].Journal of Chinese Society of Power Engineering,2012(6):458-462.
• [6]柳伟杰,葛冰,田寅申,等.当量比对甲烷预混低旋流燃烧的影响[J].燃烧科学与技术,2014(1):65-69.LIU Weijie,GE Bing,TIAN Yinshen,et al.Effect of equivalence ratio on methane pre-mixed low-swirl combustion[J].Journal of Combustion Science and Technology,2014(1):65-69.
• [7]沈忠良,邓凯,卢冰,等.声场作用下甲烷部分预混火焰不同当量比和流速对NOx生成的影响[J].中国电机工程学报,2013,33(5):54-60.SHEN Zhongliang,DENG Kai,LU Bing,et al.Effects of equivalence ratio and velocity on NOx emissions in methane partially premixed flames with acoustic excitation[J].Proceedings of the CSEE,2013,33(5):54-60.
• [8]BULAT G,JONES W P,MARQUIS A J.Large eddy simulation of an industrial gas-turbine combustion chamber using the sub-grid PDF method[J].Proceedings of the Combustion Institute,2013,34(2):3155-3164.
• [9]STOPPER U,MEIER W,SADANANDAN R,et al.Experimental study of industrial gas turbine flames including quantification of pressure influence on flow field,fuel/air premixing and flame shape[J].Combustion&Flame,2013,160:2103-2118.
• [10]BULAT G,JONES W P,MARQUIS A J.NO and COformation in an industrial gas-turbine combustion chamber using LES with the Eulerian sub-grid PDFmethod[J].Combustion&Flame,2014,161(7):1804-1825.
• [11]STOPPER U,AIGNER M,AX H,et al.PIV,2D-LIFand 1D-Raman measurements of flow field,composition and temperature in premixed gas turbine flames[J].Experimental Thermal&Fluid Science,2010,34(3):396-403.
• [12]BULAT G,FEDINA E,FUREBY C,et al.Reacting flow in an industrial gas turbine combustor:LES and experimental analysis[J].Proceedings of the Combustion Institute,2015,35(3):3175-3183.
• [13]王翰林,雷福林,邵卫卫,等.合成气燃气轮机燃烧室CFD模拟的模型选择及优化[J].中国电机工程学报,2015,35(6):1429-1435.WANG Hanlin,LEI Fulin,SHAO Weiwei,et al.Screening and modification of CFD models for syngas turbine combustor[J].Proceedings of the CSEE,2015,35(6):1429-1435.
• [14]张清叶,李建雄.煤层气燃烧NOx生成特性及影响因素数值模拟[J].热力发电,2013,42(9):59-62.ZHANG Qingye,LI Jianxiong.Numerical simulation on NOx formation characteristics during coalbed methane combustion and the influencing factors[J].Thermal Power Generation,2013,42(9):59-62.
• [15]姚秀平,齐进,张莉,等.燃气轮机与联合循环[M].北京:中国电力出版社,2010:34-44.YAO Xiuping,QI Jin,ZHANG Li,et al.Gas turbine and combined circulation[M].Beijing:China Electric Power Press,2010:34-44(in Chinese).
• [16]尹航,戴韧,张建辉,等.旋流器安装角对低旋流燃烧流场的影响[J].动力工程学报,2011,31(9):664-671.YIN Hang,DAI Ren,ZHANG Jianhui,et al.Effect of vane setting angle of swirler on flow field of a low-swirl burner[J].Journal of Chinese Society of Power Engineering,2011,31(9):664-671.
• [17]王福珍,王能,黄帆,等.微型燃气轮机富氧燃烧室数值研究[J].热力发电,2014,43(4):76-81.WANG Fuzhen,WANG Neng,HUANG Fan,et al.Numerical study on oxygen-enriched combustion chamber of micro gas turbines[J].Thermal Power Generation,2014,43(4):76-81.