一种甲烷掺氢燃烧的简化动力学模型  

A Simplified Kinetic Model for Hydrogen-Doped Methane Combustion

作　　者：陈纪全 王景甫[1] 陈颖[1] 王硕超 

机构地区：[1]北京工业大学能源与工程学院,北京

出　　处：《可持续能源》2024年第6期85-97,共13页Sustainable Energy

基　　金：北京市自然科学基金资助(3234059)。

摘　　要：作为最清洁的能源,氢燃料的使用引发了广泛关注。建议将甲烷和氢气混合以扩大氢气的规模应用。甲烷掺氢燃烧的燃烧机理的研究在燃烧过程中具有重要意义。本文通过数值分析不同反应机理下甲烷/氢气/空气火焰的层流燃烧速度,确定FFCM-1机理为最适合于甲烷掺氢燃烧数值模拟的详细化学反应机理,然后进行机理简化,得到了28个物种和185个反应的骨架模型。基于FFCM-1机理和简化机理,建立层流预混火焰、部分预混火焰、扩散火焰等火焰模型,在不同的XH2条件下对简化的骨架机理和详细的FFCM-1机理的层流燃烧速度、点火延迟时间、火焰峰值温度、熄火极限等燃烧特性进行验证。结果表明,简化前后的机制表现出良好的一致性,为实际燃烧中二维或三维的CH4/H2火焰的CFD数值研究提供一定的参考价值。The use of hydrogen fuel as the cleanest source of energy has generated a great deal of interest. Blending of methane and hydrogen is proposed to scale up the application of hydrogen. The study of the combustion mechanism of methane-hydrogen doped combustion is of great significance in the combustion process. In this paper, by numerically analyzing the laminar burning velocity of methane/hydrogen/air flames under different reaction mechanisms, the FFCM-1 mechanism is identified as the most suitable detailed chemical reaction mechanism for numerical simulation of methane-hydrogen doped combustion, and then the mechanism is simplified to obtain a skeleton model with 28 species and 185 reactions. Based on the FFCM-1 mechanism and the simplified mechanism, flame models such as laminar premixed flame, partially premixed flame, and diffusion flame were established, and the combustion characteristics such as laminar burning velocity, ignition delay time, peak flame temperature, and flame quenching limit of the simplified skeleton mechanism and detailed FFCM-1 mechanism were verified under different XH2conditions. The

关 键 词：甲烷掺氢燃烧 机理简化 层流燃烧速度 机理验证 

分 类 号：TK1[动力工程及工程热物理—热能工程]