当量比变化对合成气双旋流喷嘴燃烧火焰特征的影响  

Sygas Flame Structures of a Dual-swirled Burner at Different Equivalent Ratios

作　　者：谢岳生[1] 胡国菊[2] 郭培卿[1] 葛冰[1] 臧述升[1] 

机构地区：[1]上海交通大学机械与动力工程学院叶轮机械研究所,上海200240 [2]中国船舶重工集团公司第703研究所,哈尔滨150078

出　　处：《动力工程学报》2012年第6期458-462,共5页Journal of Chinese Society of Power Engineering

摘　　要：采用平面激光诱导荧光(PLIF)、高温热电偶及红外气体分析仪,对不同当量比下的合成气在双旋流模型燃烧室内的火焰特征进行了试验研究.结果表明:当量比为0.2时,合成气火焰的反应区呈月牙形,随着当量比的增大,合成气火焰根部逐渐出现M型分布特征,火焰锋面的内、外侧张角均单调减小,火焰推举高度与穿透深度增大,同时,燃烧室中下游出现大量的反应区,火焰根部受到压缩,燃烧室排气温度升高,CO排放量迅速降低.An experimental study has been performed to investigate the syngas swirled burner at different equivalent ratios, using a planar laser induced flu flame structures of a dual orescence （PLIF） system, high-temperature thermocouples and an infrared gas analyzer. Results show that the syngas flame exhibits a crescent shape at a relatively low equivalent ratio of 0. 2; with the rise of equivalent ratio, the flame shows an M-shaped root, and its spray angle reduces at both inside and outside, while the lift-off height and penetration depth increase. Simultaneously, large areas of chemical reaction appear downstream of the combustor, with a compressed flame root, raised exhaust temperatures and a reduced CO emission.

关 键 词：双旋流喷嘴 火焰特征 当量比 合成气 PLIF测量 

分 类 号：TK16[动力工程及工程热物理—热能工程]