正丙苯的低温氧化动力学研究
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- 英文论文题名：Kinetic investigation of the low-temperature oxidation of n-propylbenzene
- 论文作者：刘岳曦 ; 王丙寅 ; 田振玉
- 英文论文作者：Yue-Xi Liu ; Bing-Yin Wang ; Zhen-Yu Tian ; Institute of Engineering Thermophysics ; Chinese Academy of Sciences ; University of Chinese Academy of Sciences
- 年：2016
- 作者机构：中国科学院工程热物理研究所;中国科学院大学;
- 论文关键词：低温氧化 ; 射流搅拌反应器 ; 正丙苯 ; 动力学模拟
- 英文论文关键词：Low-temperature oxidation ; Jet-stirred reactor ; n-Propylbenzene ; Kinetic modeling
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第四十六分会：燃烧化学
- 语种：中文
- 分类号：O625.11;O643.1
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第四十六分会 ; 燃烧化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：176k
- 原文格式：D
- 会议级别：全国
摘要
化石燃料燃烧产生的炭黑前驱体,尤其是芳香族化合物的排放是导致PM2.5问题的重要原因。由于商用燃料组分复杂,可以用正丙苯等芳香族化合物作为化石燃料的代表性组分来开展氧化动力学研究。本文利用射流搅拌反应器结合气相色谱和气质联用研究了正丙苯在700-1100 K下的低温氧化。实验中观测并定量分析了约20种物种的摩尔分数曲线。使用Wang等人[1]的机理对本次实验进行了模拟。反应路径分析表明正丙苯主要通过丙烷基上脱氢反应生成三个C6H5C3H6自由基,随后生成十分重要的中间产物苯乙烯。由敏感性分析可知,正丙苯与OH自由基发生的脱氢反应最为敏感,对反应整体的影响最大。这些结果为发展含有正丙苯的替代燃料提供了理论基础。
It has been widely discussed that the emissions of soot precursors, especially aromatic hydrocarbons, from the combustion of commercial fuels are an important source of PM2.5. Due to the hundreds of components in commercial fuels, they can be represented by some single aromatics such as n-propylbenzene to make the measurements both simple and credible. The oxidation occurred in a JSR within 700-1100 K. GC and GC-MS were used to qualify and quantify mole fraction of more than 20 species. By using the model from Wang et al., the simulating results reveal that the fuel is decomposed by C-H bond cleavage to form three C6H5C3H6 radicals, all of which transform to styrene finally. The sensitivity analysis shows that n-propylbenzene reacted with OH radical is the most sensitive reaction. These results provide fundamental basis to explore jet fuels containing n-propylbenzenes.
It has been widely discussed that the emissions of soot precursors, especially aromatic hydrocarbons, from the combustion of commercial fuels are an important source of PM2.5. Due to the hundreds of components in commercial fuels, they can be represented by some single aromatics such as n-propylbenzene to make the measurements both simple and credible. The oxidation occurred in a JSR within 700-1100 K. GC and GC-MS were used to qualify and quantify mole fraction of more than 20 species. By using the model from Wang et al., the simulating results reveal that the fuel is decomposed by C-H bond cleavage to form three C6H5C3H6 radicals, all of which transform to styrene finally. The sensitivity analysis shows that n-propylbenzene reacted with OH radical is the most sensitive reaction. These results provide fundamental basis to explore jet fuels containing n-propylbenzenes.
引文
[1]Z.D.Wang,Y.Y.Li,F.Zhang,L.D.Zhang,W.H.Yuan,Y.Z.Wang,F.Qi,Proc.Combust.Inst.34(2013)1785.