F级燃气轮机DeNO_(x)+燃烧器燃烧模拟及试验  

Combustion Simulation and Test of DeNO_(x)+Burner in F-Class Gas Turbine

作　　者：张富诚 颜伟 张津 ZHANG Fucheng;YAN Wei;ZHANG Jin(Shanghai Electric Gas Turbine Co.,Ltd.,Shanghai 200240,China)

机构地区：[1]上海电气燃气轮机有限公司,上海200240

出　　处：《热力透平》2025年第1期26-30,共5页Thermal Turbine

摘　　要：为了研究低排放贫预混燃烧技术燃烧不稳定现象,针对适用于F级燃气轮机的预混燃料径向分布可调的新型DeNO_(x)+燃烧器,通过燃烧数值模拟研究了温度场和当量比的分布变化,开展了全温、全压、全尺寸燃烧试验,从嗡鸣和排放角度分析了燃烧性能,验证了预混燃料径向分布灵活调控对燃烧的影响。研究结果表明:调节内外预混燃料比例,即改变预混燃料径向分布,将显著影响燃烧温度场、当量比分布及火焰张角;高负荷下,调节内外预混燃料比例可抑制嗡鸣,提高燃烧稳定性;其中,在100%基本负荷下,内预混燃料比例为60%、外预混燃料比例为40%时嗡鸣表现较好,80%~100%基本负荷范围内,调节内外预混燃料比例后可使燃烧保持稳定,同时NO_(x)排放的体积分数低于15×10^(-6),仍然满足超低排放要求。研究成果可为调节燃气轮机燃烧稳定性和降低排放提供参考。In order to study the unstable combustion phenomenon of lean premixed combustion technology with low emission,study was carried out on a new type of DeNO_(x)+burner in F-class gas turbine,in which the radial premixed fuel distribution can be adjusted.The temperature field and equivalence ratio distribution changes were studied through numerical simulation of combustion,and full temperature,full pressure and full-scale combustion tests were conducted to analyze combustion performance from perspectives of humming and emissions,thus,the effect of flexible regulation of radial distribution of premixed fuel on combustion was verified.The research results indicated that adjusting the ratio of internal and external premixed fuels,i.e.changing the radial distribution,would significantly affect the combustion temperature field,equivalence ratio distribution and flame open angle;under high load,by adjusting the proportion of internal and external premixed fuel,the humming could be restrained,and the combustion stability could be improved;at 100%base load,the humming performance was satisfying when the proportion of premixed fuel is 60%internal and 40%external;in the range of 80%—100%base load,the combustion could be kept stable by adjusting the proportion of internal and external premixed fuel,meanwhile,the volume fraction of NO_(x)emissions could be lower than 15×10^(-6),which could still meet the ultra-low emission requirements.The research results can provide reference for regulating combustion stability and reducing emission.

关 键 词：燃气轮机 燃烧器 预混燃料径向分布 燃烧稳定性 排放 

分 类 号：TK474.9[动力工程及工程热物理—动力机械及工程]