基于化学爆炸模式分析方法的二甲醚对冲扩散火焰中NO_(x)排放机理研究  

Study on NO_(x)Emission Mechanism in Dimethyl Ether Counter Flow Diffusion Flame Based on Chemical Explosive Mode Analysis Method

作　　者：熊得杨 亢银虎[1] 高新 王泉海[1] 卢啸风[1] XIONG Deyang;KANG Yinhu;GAO Xin;WANG Quanhai;LU Xiaofeng(Key Laboratory of Low-grade Energy Utilization Technologies&Systems,MOE,Chongqing University,Chongqing 400044,China)

机构地区：[1]重庆大学低品位能源利用技术及系统教育部重点实验室,重庆400044

出　　处：《动力工程学报》2022年第5期444-449,共6页Journal of Chinese Society of Power Engineering

基　　金：中央高校经费军民融合资助项目(2020CDJGFND012);重庆市自然科学基金资助项目(cstc2019jcyj-msxmX0584);国家自然科学基金资助项目(22178032)。

摘　　要：研究了化学爆炸模式分析(CEMA)方法在NO_(x)排放机理中的应用及可行性,揭示了主导NO_(x)排放路径的作用机理,并确定了NO_(x)排放的关键反应动力学因素。结果表明:CEMA方法可以准确表征NO_(x)排放路径;在化学当量等值面,基元反应R309(N+NO_(x)=N+O)和R371(CH+N=HCN+N)分别在低、高全局拉伸率下对NO_(x)的排放影响最显著,减小其反应速率能极大地控制NO_(x)的排放量。The application and feasibility of chemical explosion mode analysis(CEMA)method in NO_(x)emission mechanism were studied,so as to reveal the mechanism of chemical reaction on NO_(x)emission path,and find out the key reaction kinetic factors that dominate NO_(x)emission.Results show that the CEMA method can accurately characterize the NO_(x)chemical reaction kinetics.On the stoichiometric equivalent surface,the elementary reactions R309(N+NO_(x)=N+O)and R371(CH+N=HCN+N)have the most significant effects on NO_(x)emission at low and high stretch rates,respectively.Reducing reaction rate of the elementary reactions can greatly control NO_(x)emissions.

关 键 词：反应动力学 CEMA 二甲醚 对冲扩散火焰 NO_(x) 排放 

分 类 号：X701[环境科学与工程—环境工程]