GLOBAL REACTION SCHEMES FOR HYDROCARBON COMBUSTION
GLOBAL REACTION SCHEMES FOR HYDROCARBON COMBUSTION
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DOI：
10.1016/0010-2180(88)90021-1
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发表时间：
1988-09-01
影响因子：
4.4
通讯作者：
LINDSTEDT, RP
中科院分区：
文献类型：
--
作者：
JONES, WP;LINDSTEDT, RP
通过对火焰结构的分析，导出了在预混火焰和扩散火焰中，烷烃和丁烷在混合物中与空气燃烧的整体反应方案。这些方案包括两个相互竞争的燃料分解反应，并已使用平衡假设来推导出速率表达式形式的初步估计。推导出的四步反应机理为Cn H2 n+2+n2 O2⤳n CO+(n+1)H2 C n H2 n+n H2 O⤳n CO+(2n+1)H2+1 2⇌H2 O CO+H2 O⇌CO2+H2.通过与甲烷和丙烷预混火焰实验数据以及甲烷-空气火焰扩散火焰数据的比较，确定了最终的速率方程的动力学参数.由此产生的方案已经被发现结合了数学上的易操纵性和对一系列火焰参数的良好一致性，例如火焰速度、火焰厚度和物种分布。
Global reaction schemes for the combustion of alkane hydrocarbons up to butane in mixtures with air in premixed and diffusion flames have been derived using analysis of flame structures. The schemes include two competing fuel breakdown reactions, and equilibrium assumptions have been used to derive initial estimates of the forms of the rate expressions. The deduced four-step reaction mechanism is C n H 2n+ 2+ n 2 O 2⤳ n CO+(n+ 1) H 2 C n H 2n+ n H 2 O⤳ n CO+(2n+ 1) H 2 H 2+ 1 2⇌ H 2 O CO+ H 2 O⇌ CO 2+ H 2 The final kinetic parameters for the resulting rate equations have been determined by comparisons with experimental data for premixed methane and propane flames, along with diffusion flame data for a methane-air flame. The resulting schemes have been found to combine mathematic tractability with good agreement for a range of flame parameters such as flame speed, flame thickness, and species profiles.