负温度系数区域内RP-3喷气燃料表征燃料化学反应动力学分析  

Chemical Reaction Kinetics Analysis on Characterization Fuel of RP-3 Jet Fuel inNegative Temperature Coefficient Region

作　　者：魏胜利[1] 吴李荣 于志清 孙林肖 张志成 WEI Shengli;WU Lirong;YU Zhiqing;SUN Linxiao;ZHANG Zhicheng(School of Automotive and Traffic Engineering,Jiangsu University,Zhenjiang 212013,China;School of Power and Energy Engineering,Harbin Engineering University,Harbin 150001,China)

机构地区：[1]江苏大学汽车与交通工程学院,江苏镇江212013 [2]哈尔滨工程大学动力与能源工程学院,黑龙江哈尔滨150001

出　　处：《石油学报（石油加工）》2024年第3期718-726,共9页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：江苏省高校优势学科建设工程资助项目(014000319/2018-00391)基金资助。

摘　　要：为探究喷气燃料(RP-3)在不同条件下负温度系数(NTC)区域内的反应路径、敏感反应以及小分子基元团的影响规律,以CRECK小分子详细机理为核心,基于解耦法耦合正十二烷、正丁基环己烷、正丁基苯简化机理,构建得到RP-3多组分表征燃料化学反应动力学详细机理;并在不同压力、燃料/空气质量比工况下对其NTC区域内的燃烧过程进行了敏感性分析、组分含量变化分析以及组分间交互作用路径分析。结果表明:NTC区域内反应H_(2)O_(2)(+M)=2OH(+M)(M为反应中第三体)是最重要的着火促进反应;不同反应条件下O_(2)、CH_(4)、C_(2)H_(4)的陡降时刻与CO_(2)的激增时刻均与燃料的着火延迟期表现出极高的吻合度;压力与燃料/空气质量比的改变仅会影响反应路径的占比。To explore the reaction path,sensitive reaction and the influence law of small molecule basic element groups of RP-3 jet fuel in the negative temperature coefficient(NTC)region under different conditions,based on the detailed mechanism of CRECK small molecules,the simplified mechanism of n-dodecane,n-butylcyclohexane and n-butylbenzene was coupled by decoupling method,and then the detailed mechanism of chemical reaction kinetics of RP-3 jet fuel was constructed.Moreover,the analysis of sensitivity,component content change,and interaction path between components were performed for combustion process in the NTC region under different pressures and mass ratios of fuel to air quality.The results show that H_(2)O_(2)(+M)=2OH(+M)(M is third body)represents the most important ignition promoting reaction in the NTC region;under different reaction conditions,the steep drop time of O_(2),CH_(4),C_(2)H_(4)and the surge time of CO_(2)all show a high degree of coincidence with the ignition delay of fuel;the change of pressure and mass ratio of fuel to air quality will only affect the proportion of reaction path.

关 键 词：喷气燃料 多组分表征燃料 负温度系数区域 化学反应动力学 敏感性分析 

分 类 号：O643[理学—物理化学]