作　　者： ; ; ; ;

机构地区： 长沙理工大学能源与动力工程学院

出　　处： 《工业炉》 2017年第1期1-4,13,共5页

摘　　要： 为了对甲烷无焰燃烧进行机理性研究,在搭建的无焰燃烧实验台上进行了甲烷在常温空气下无焰燃烧特性的实验研究,采用数值模拟的方法研究了改变燃烧器的参数对甲烷扩散燃烧火焰温度、NO生成量及无焰燃烧的影响规律。结果表明,当燃烧器燃料喷嘴与空气喷嘴间距增大时,炉内火焰峰值温度逐渐降低,出口NO排放浓度也随之减小,越有利于达到无焰燃烧状态;当燃烧器空气喷嘴孔数增加或燃料喷嘴孔径增大时,炉内火焰峰值温度逐渐升高,出口NO排放浓度也随之增加,越不利于达到无焰燃烧状态。 In order to study the flameless combustion mechanism of methane, a flameless combustion test-bed was set up and experimental research of flameless combustion characteristic of methane under normal temperature air was made on the test-bed. The generation of NO and diffusion flame temperature due to different parameters of the burners are investigated by numerical simulation. The results show that, as the distance of fuel nozzles and air nozzles increases, the peak temperature and NO emissions of export gradually decrease, which makes it is more favorable to reach flameless combustion state. As the number of air nozzles or the diameter of fuel nozzles increases, the peak temperature and NO emissions of export gradually increase, which makes it goes more against to reach flameless combustion state.

关 键 词： 燃烧器参数 峰值温度 排放 无焰燃烧

领　　域： [化学工程]