异丙苯低压层流预混火焰实验研究  

Iso-Propylbenzene Laminar Premixed Flame at Low Pressure

作　　者：田东旭 翁俊桀[1] 田振玉[1,2] Tian Dongxu;Weng Junjie;Tian Zhenyu(Institute of Engineering Thermophysics,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院工程热物理研究所,北京100190 [2]中国科学院大学,北京100049

出　　处：《燃烧科学与技术》2021年第5期487-492,共6页Journal of Combustion Science and Technology

基　　金：科技部重点研发计划资助项目(2017YFA0402800);国家自然科学基金资助项目(51976216,51888103);北京市杰出青年基金资助项目(JQ20017).

摘　　要：利用光电离分子束质谱对异丙苯(A1CH(CH_(3))_(2))在30 mmHg实验压力下,当量比为0.45、1.00和1.58的层流预混火焰进行了研究.实验结果表明,随着当量比的增加,A1CH(CH_(3))_(2)需要在燃烧器上方更高的位置消耗完全.实验中共测得了14种燃烧产物,包括CH3自由基、小分子烃类、含氧类物质、单环和多环芳烃.根据实验结果对A1CH(CH_(3))_(2)的燃烧分解路径和多环芳烃生成路径进行了分析.结果表明A1CH(CH_(3))_(2)可以通过多种路径消耗,如在异丙基上发生脱氢反应和脱甲基反应.此外萘(A2)是生成多环芳烃的重要前驱体.The laminar premixed flames of iso-propylbenzene(A1CH(CH_(3))_(2))with equivalent ratios at 0.45,1.00 and 1.58,respectively,under 30 mmHg were studied by using photoionization and molecular beam mass spec-trometry.The experimental results show that with the increase of equivalence ratio,A1CH(CH_(3))_(2)tended to be consumed completely at a higher position on the burner.Fourteen products,including CH3 radical,light hydro-carbons,oxygenates,mono-and poly-aromatics,were measured.According to the experimental results,the combustion decomposition pathways of A1CH(CH_(3))_(2)and the formation routes of poly-aromatics were analyzed.A1CH(CH_(3))_(2)could be consumed through several pathways,such as H abstraction reaction and CH3 abstraction reaction on isopropyl group.Besides,naphthalene(A2)was an important precursor for the formation of poly-aromatics.

关 键 词：层流预混火焰 异丙苯 芳烃 分子束质谱 

分 类 号：TK16[动力工程及工程热物理—热能工程]