1-己烯/异辛烷混合物低温自燃实验与模型研究
Experimental and modeling study of the autoignition of 1-hexene/iso-octane mixtures at low temperatures
摘要：
在里尔的一台快速压缩机上，对异辛烷/1己烯混合物（含异辛烷82%、1己烯18%）在压缩后温度630 ~ 840 K、压力8 ~ 14 bar、Φ= 1的条件下进行了自燃延迟时间的测定。结果表明，该混合物的反应活性比纯异辛烷高得多，但比纯1己烯的反应活性低。它表现出典型的低温行为，冷火焰和负温度系数区的外观。还测定了冷焰后得到的反应混合物的组成。一个详细的动力学模型已获得通过使用系统EXGAS，在南希开发的自动生成的动力学机制，并已获得了可接受的协议与实验结果的自燃延迟时间和产品的分布。流量分析表明，来自两种反应物的物质之间的交叉反应（如H-提取或组合）在所研究的烃类的主要流量消耗中可以忽略不计。已确定的主要初级产品的形成方式和最敏感的速率常数。
英文摘要：
Autoignition delay times have been measured in a rapid compression machine at Lille at temperatures after compression from 630 to 840 K, pressures from 8 to 14 bar, Φ= 1 and for a iso octane/1 hexene mixture containing 82% iso-octane and 18% 1 hexene. Results have shown that this mixture is strongly more reactive than pure iso-octane, but less reactive than pure 1 hexene. It exhibits a classical low temperature behaviour, with the appearance of cool flame and a negative temperature coefficient region. The composition of the reactive mixture obtained after the cool flame has also been determined. A detailed kinetic model has been obtained by using the system EXGAS, developed in Nancy for the automatic generation of kinetic mechanisms, and an acceptable agreement with the experimental results has been obtained both for autoignition delay times and for the distribution of products. A flow rate analysis reveals that the crossed reactions between species coming from both reactants (like H-abstractions or combinations) are negligible in the main flow consumption of the studied hydrocarbons. The ways of formation of the main primary products observed and the most sensitive rate constants have been identified.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
