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当前位置: 首页 > 文章 > 激波管燃烧条件下典型燃料多环芳香烃排放影响因素分析 中国农机化学报 2016,37 (6) 154-159
Position: Home > Articles > Analysis of generating factors on the poly aromatic hydrocarbons pollutants of typical fuel in shock tube combustion Journal of Chinese Agricultural Mechanization 2016,37 (6) 154-159

激波管燃烧条件下典型燃料多环芳香烃排放影响因素分析

作  者：
刘有华;许广举;陈庆樟;李学智
单  位：
常熟理工学院机械工程学院
关键词：
柴油;生物柴油;多环芳香烃;生成因素
摘  要：
在正庚烷、癸酸甲酯机理的基础上,构筑包含多环芳香烃(PAHs)生成过程的两种机理,通过与实验数据的对比验证机理的有效性,考察燃料特性、当量比、初始温度、初始压力对多环芳香烃生成过程的影响。研究结果表明,两种新机理计算得到的中间自由基、着火延时、主产物浓度分布与实验数据吻合良好,可以用来模拟燃料的点火燃烧过程;正庚烷和癸酸甲酯火焰中的多环芳香烃浓度在温度升高率最大时达到最高值,多环芳香烃各组分达到峰值浓度所需的反应时间随初始温度的增大而减小;多环芳香烃各组分峰值浓度均随当量比的减小而降低;随初始压力的增大,多环芳香烃各组分峰值浓度出现的时刻略有提前;与癸酸甲酯相比,正庚烷燃烧过程中更易产生多环芳香烃。
译  名：
Analysis of generating factors on the poly aromatic hydrocarbons pollutants of typical fuel in shock tube combustion
作  者：
Liu Youhua;Xu Guangju;Chen Qingzhang;Li Xuezhi;Department of Mechanical Engineering,Changshu Institute of Technology;
关键词：
diesel;;biodiesel;;poly aromatic hydrocarbons;;generating factors
摘  要：
Based on the N-Heptane mechanism and methyl decanoate mechanism,two mechanisms were re-built which containing the process of Poly Aromatic Hydrocarbons(PAHs)generation,and the validity of two mechanisms were verified by comparing with the experimental data.The affect of fuel characteristics,equivalence ratio,initial temperature and initial pressure on the PAHs formation process were studied.The results show that,the intermediate free radicals,ignition delay and main product concentration that calculated by the two new mechanism,were in good agreement with the experimental data.So it can be used to simulate the ignition combustion progress.The PAHs peak concentration appeared in the maximum temperature increased rate.The peak concentration reaction time of each component decreased with the increase of initial temperature.The peak concentration of PAHs reduced when the equivalence ratio decreased.With the increase of initial pressure,the peak concentration of PAHs occurred slightly ahead of schedule.Compared with methyl decanoate ester,N-Heptane was more prone to PAHs in the combustion process.

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