受限空间油气热着火的简化机理与分析

发布时间：2018-04-15 04:05

  本文选题：油气 + 热着火　； 参考：《燃烧科学与技术》2015年01期

【摘要】：油气热着火是导致油气火灾的重要原因之一,对油气热着火发生的反应机理研究具有重要的理论和现实意义.通过对正庚烷、异辛烷和C1~C4详细反应机理的模拟研究,得到3个主要结果:一是通过温度敏感性分析、路径分析等方法,获得了油气热着火简化机理,包含47个组分,100个基元反应;二是通过对简化机理的模拟分析发现,随着初始温度的增加,热着火的延迟时间减少,当初始温度小于850,K时,延迟时间较长,而初始温度大于900,K后,延迟时间相差不多;三是在相同温度和碳氢浓度下,组分浓度越均匀,延迟期越短,大分子浓度越大,延迟期越长,反应后温度越低,小分子浓度越大,反应越充分.
[Abstract]:Thermal ignition of oil and gas is one of the important causes of oil and gas fire. It is of great theoretical and practical significance to study the reaction mechanism of thermal ignition of oil and gas.By simulating the reaction mechanism of n-heptane, isooctane and C1~C4, three main results are obtained: first, the simplified mechanism of hydrocarbon thermal ignition is obtained by temperature sensitivity analysis and path analysis.It contains 47 components and 100 elementary reactions. Secondly, the simulation analysis of the simplified mechanism shows that the delay time of thermal ignition decreases with the increase of initial temperature, and the delay time is longer when the initial temperature is less than 850 鈩，

本文编号：1752425