摘要
NO生成机理的基础研究对利用高温空气燃烧技术非常重要。本文以对向流扩散火焰为对象,利用基于详细基元反应动力学模型的燃烧数值解析方法研究了预热温度对高温空气(630～1 800 K)/甲烷扩散火焰中氮氧化物生成的影响。结果表明,随着预热温度的逐渐升高,NO的生成机理发生显著变化,扩散火焰中的NO生成主要由快速型机理控制变化为热力型机理控制。同时发现,随着预热温度的升高,NO的排放指数EINO急剧上升。
The fundamental research on the NO formation mechanism is very important for using the technology of high temperature air combustion. The methane/high temperature air （630 K - 1 800 K） counterflow diffusion flame was analysed numerically by detailed chemical kinetics model. Based on which, the effects of preheating temperature on mechanism of NOx formation were discussed. The results showed that mechanism of NO formation changed with the increase of preheating temperature and the determining mechanism of NO formation in diffusion flame changed With the increase of preheating temperature, the from prompt mechanism to thermal mechanism emission index of NO increases rapidly.
出处
《节能技术》
CAS
2011年第4期291-295,300,共6页
Energy Conservation Technology
基金
广东海洋大学自然科学基金(C08217)
广东海洋大学2009年实验研究课题资助项目
关键词
甲烷高温空气燃烧
预热温度
氮氧化物
数值分析
high air temperature combustion of methane
preheating temperature
NOX
numerical analysis
