扩散火焰中丁醇对排放中粒子数量的影响  

Effect of butanol on the particle number emission in diffusion flame

作　　者：张克松[1] 丁文浩 崔福兴 ZHANG Kesong;DING Wenhao;CUI Fuxing(School of Automotive Engineering,Shandong Jiaotong University,Jinan 250357,China;Shandong Qirui Energy Technology Co.,Ltd.,Jinan 250101,China;State Grid Shandong Electric Power Research Institute,Jinan 250014,China)

机构地区：[1]山东交通学院汽车工程学院,山东济南250357 [2]山东琦瑞能源科技有限公司,山东济南250101 [3]国网山东省电力公司电力科学研究院,山东济南250014

出　　处：《内燃机与动力装置》2025年第1期75-79,共5页Internal Combustion Engine & Powerplant

摘　　要：为研究正丁醇对甲苯的稀释作用及正丁醇中的氧对尾气中粒子数量(particle number,PN)的影响,以正庚烷/甲苯/正丁醇为燃料,利用扩散充电式颗粒计数器测量自然对流扩散火焰中的PN,分析无正丁醇时二元燃料中甲苯体积分数对粒子数密度的影响,评估稀释作用对PN的影响;保持正庚烷和甲苯的体积比为83/17,分析添加正丁醇时三元燃料产生的粒子数密度,通过三元燃料与二元燃粒产生的粒子数密度的差评估氧的作用对PN的影响。结果表明:稀释效应对减少PN的作用更大;当正丁醇体积分数大于6%时,燃料中的氧开始促进颗粒的氧化,当正丁醇体积分数为13%时,燃料氧促进颗粒氧化的效果最大。To investigate the dilution effect of n-butanol on toluene and the influence of oxygen in n-butanol on particle number(PN),using n-heptane/toluene/n-butanol as fuel,a diffusion charging particle counter is used to measure PN in a natural convection diffusion flame.Firstly,the effect of toluene volume fraction in binary fuel without n-butanol on PN is studied,and the effect of dilution on PN is evaluated;then maintain the volume ratio of n-heptane to toluene at 83/17,study the PN generated by ternary fuel adding n-butanol,and evaluate the effect of oxygen on PN by the difference in particle number density between the binary and ternary fuel.The results indicate that the dilution effect has a greater effect on reducing PN.When the volume fraction of n-butanol is greater than 6%,oxygen in the fuel begins to promote particle oxidation.When the volume fraction is 13%,the effect of fuel oxygen on promoting particle oxidation is the greatest.

关 键 词：正丁醇 PN 扩散火焰 

分 类 号：TK407.9[动力工程及工程热物理—动力机械及工程]