论文部分内容阅读
本文基于零维均质着火系统研究了非平衡等离子中臭氧(O_3)对甲烷/空气着火过程的影响,并通过化学反应路径分析揭示了O_3促进甲烷/空气着火的化学反应机理。研究结果表明,O_3促进甲烷/空气着火主要是通过化学反应动力学效应来实现的,热效应的影响十分有限。在不添加O_3时,甲基的氧化速率缓慢,从而导致甲烷/空气不易着火;在添加O_3后,甲基可以通过反应CH_3+O=CH_2O+H,CH_3+O=CO+H+H_2以及CH_3+HO_2=CH_3O+OH被迅速氧化,因此O_3能够促进甲烷/空气的着火。
Based on the zero-dimensional homogeneous ignition system, the effect of ozone (O_3) on methane / air ignition in non-equilibrium plasma was studied. The chemical reaction mechanism of O_3 on methane / air ignition was also revealed through chemical reaction path analysis. The results show that the O_3 promotes methane / air fire mainly through the chemical reaction kinetic effect to achieve, the impact of thermal effects is very limited. When O_3 is not added, the oxidation rate of methyl group is slow, which makes the methane / air difficult to ignite. After O_3 is added, methyl can be oxidized by the reaction of CH_3 + O = CH_2O + H, CH_3 + O = CO + H + H_2 and CH_3 + HO_2 = CH_3O + OH is rapidly oxidized, so O_3 can promote methane / air ignition.