CSTR系统中氢气燃烧特性的分岔分析

Bifurcation Analysis of Combustion Characteristics of Hydrogen in CSTR

运用分岔理论,采用了氢气的详细化学反应机理,对连续流动均匀搅拌反应器(CSTR)中氢气的燃烧特性进行详细的分析.分别以系统温度、滞留时间为分岔参数,详细讨论了CSTR系统的各种工况(系统压力、入口混合气过量空气系数、系统温度及滞留时间)对混合气着火特性的影响.结果表明,当以系统温度为分岔参数时,系统压力及滞留时间对混合气的燃烧特性影响较大,而过量空气系数影响较小;当以滞留时间为分岔参数时,系统温度对混合气燃烧特性有较大的影响.

Bifurcation analysis of combustion characteristics of H2 in the continuously-flow well-stirred tank reactor（CSTR） was carried out. The detailed chemical reaction mechanism of H2 was adopted. The bifurcation behaviors of ignition and extinction of the mixed gas were analyzed with system temperature and residence time as bifurcation parameters respectively. At the same time, the effects of system pressure, excessive air coefficient, system temperature and residence time on the combustion characteristics of the mixed gas were discussed. The results show that, with system temperature as the bifurcation parameter, system pressure and residence time have great effect on the combustion characteristics of the mixed gas, while excessive air coefficient exerts little effect. When residence time is adopted as the bifurcation parameter, system temperature has great effect on the combustion characteristics of the mixed gas.