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Role of Hydrogen Enrichment on Acetylene Emission during Benzene Oxidation

机译：氢气富集对苯氧化期间乙炔排放的作用

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摘要

A zero-dimensional model (perfectly-stirred reactor) in conjunction with CHEMKIN II and a scheme resulting from the merging of validated kinetic schemes for the oxidation of benzene were used to investigate the effect of hydrogen addition on the formation-depletion of C2H2, which is known as a soot precursor. The current modeling study treats the dependence of acetylene amounts on hydrogen percentage in the fuel mixture, and defines the key reaction mechanisms responsible for the observed reduction in C2H2 and consequently in polycyclic aromatic hydrocarbons and soot amounts induced by the hydrogen additive. The main objective of this work was to obtain fundamental understanding of the mechanisms, through which the hydrogen affects the acetylene yields. It was found that, at high temperatures hydrogen/benzene fuel mixtures displayed lower acetylene concentrations compared to the pure benzene fuel, whereas opposite trends were observed at low reaction temperatures.
机译：使用零维模型（完美搅拌反应器）与CheminII II结合和由验证的苯氧化的验证的动力学方案的合并得到的方案来研究氢添加对C2H2的形成枯竭的影响 被称为烟灰前体。 目前的建模研究将乙炔量对燃料混合物中氢百分比的依赖性进行治疗，并限定负责C2H2的减少的关键反应机制，从而在氢添加剂诱导的多环芳烃和烟灰量中。 这项工作的主要目标是获得对机制的基本理解，氢气影响乙炔收率。 结果发现，与纯苯燃料相比，在高温/苯燃料混合物中显示出较低的乙炔浓度，而在低反应温度下观察到相反的趋势。

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