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针对甲烷-湿空气在微细腔内的自热重整,建立了直径为2mm的微细直管试验系统,采用试验研究和三维数值计算两种方法分析了微反应器内甲烷-湿空气自热重整转化特性,并重点分析了反应温度、原料气组分比例变化对重整反应中甲烷转化率和氢气产率的影响.结果表明:在相同的甲烷流量工况下,随着温度的升高以及空/碳比和水/碳比的增大,甲烷转化率和氢气产率均增大,其中空-碳比对甲烷转化率的影响比对氢气产率的影响大;进气质量流量较小的体系比较大的体系在重整产氢方面的效果好.试验和数值模拟得到的结果比较一致.
Aiming at the autothermal reforming of methane-humid air in the micro-cavity, a micro-straight tube test system with a diameter of 2mm was established. By means of experimental study and three-dimensional numerical calculation, And the effects of reaction temperature and ratio of feed gas components on the conversion of methane and the yield of hydrogen in the reforming reaction are emphatically analyzed.The results show that under the same methane flow conditions, with the increase of temperature As well as the increase of air / carbon ratio and water / carbon ratio, the conversion of methane and the yield of hydrogen increased, and the effect of space-carbon ratio on methane conversion was greater than that on hydrogen yield. Small system of larger system in the reforming of hydrogen production effect is good.Experimental and numerical simulation results are more consistent.