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基于表面反应详细机理,数值研究了微环形腔内有氧条件下,组分、温度、质量流量对甲烷/水/二氧化碳催化重整反应特性的影响.结果表明:低温下,增大水的含量可提高产氢量,而增大二氧化碳含量对产氢量无明显影响.增大二氧化碳或水的含量,可提高甲烷转化率.低温下二氧化碳、水等组分的改变对甲烷重整反应的影响较小,高温下组分的影响增强.质量流量增大,出口氢气、一氧化碳质量分数和甲烷转化率明显降低.高流量下加入水或二氧化碳对甲烷转化率的影响已不再明显.当水(二氧化碳)作为产物时,质量流量的增大对其影响并不大;而做为反应物时,质量流量增大,使出口处水(二氧化碳)的质量分数升高.
Based on the detailed mechanism of surface reaction, the effects of composition, temperature and mass flux on the catalytic reforming reaction of methane / water / carbon dioxide under aerobic conditions were numerically investigated. The results showed that under low temperature, Can increase the amount of hydrogen produced, while increasing the content of carbon dioxide has no significant effect on the amount of hydrogen produced. Increasing the content of carbon dioxide or water can increase the methane conversion rate. The effect of low temperature carbon dioxide, water and other components on the methane reforming reaction The influence of the components under the small temperature and the high temperature is enhanced.The mass flow rate increases and the outlet hydrogen, the mass fraction of carbon monoxide and the methane conversion rate obviously decrease.The effect of adding water or carbon dioxide on the methane conversion rate under the high flow rate is no longer obvious.When water ( Carbon dioxide) as a product, the increase of mass flow has little effect on it; while as a reactant, mass flow increases, so that the outlet of water (carbon dioxide) mass fraction increased.