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瓦斯爆炸是一种复杂的链式反应,为了探求其链式反应的动力学特性,采用详细的瓦斯爆炸链式反应机理(包括53种组分,325个反应),利用软件CHEMKINⅢ中的SENKIN子程序包,利用SENKIN子程序包中的敏感性分析程序块对瓦斯爆炸的详细化学反应机理进行分析,找出对瓦斯爆炸过程反应动力学特性影响较大的反应步。通过数值计算和模拟,对瓦斯爆炸过程中反应物浓度、自由基以及致灾性气体的生成和变化做了敏感性分析,得出了影响瓦斯爆炸的关键反应步为R158,R53,R98,R57,R155,R156,R38,R32,R119。
Gas explosion is a complex chain reaction. In order to explore the kinetic characteristics of its chain reaction, a detailed gas explosion chain reaction mechanism (including 53 components and 325 reactions) was used. The gas explosion was performed using the SENKIN Package, using the sensitivity analysis block in the SENKIN sub-package to analyze the detailed chemical reaction mechanism of gas explosion and find the reaction step that has a great influence on the reaction kinetics of the gas explosion process. Through the numerical calculation and simulation, sensitivity analysis was made on the formation and variation of reactant concentration, free radicals and the disastrous gases in the gas explosion process. The key reaction steps affecting gas explosion were obtained as R158, R53, R98, R57 , R155, R156, R38, R32, R119.