垃圾填埋气部分氧化重整制合成气的热力学分析

发布时间：2018-05-26 17:04

本文选题：垃圾填埋气 + 重整　；参考：《化学工程》2017年02期

【摘要】：采用吉布斯自由能最小法对垃圾填埋气(简化为甲烷与二氧化碳混合物)部分氧化重整制合成气进行了热力学分析,得出了生成适于费托反应的合成气组分的最适反应条件。结果显示:当反应温度大于1 073 K时,CH_4转化率大于99%,反应生成的气体中CH_4的含量小于0.25%。分别提高反应温度和O_2/CH_4摩尔比均有助于抑制积炭的生成。反应生成的气体中,H_2和CO分别达到最大值时,所对应的反应条件的范围不同,但在特定条件下它们有所重叠。填埋气组分CO_2/CH_4摩尔比分别为0.5,0.7,0.9时,通过等高线法得到了生成适于费托反应的合成气组分所需的最适反应条件,而CO_2/CH_4摩尔比为1.1时,无法获得相应的最适反应条件。
[Abstract]:The Gibbs free energy minimization method was used for thermodynamic analysis of partial oxidation reforming of landfill gas (simplified as mixture of methane and carbon dioxide) to produce syngas, and the optimum reaction conditions for the formation of syngas components suitable for Fischer reaction were obtained. The results show that when the reaction temperature is greater than 1 073 K, the conversion of CH4 is greater than 99 and the content of CH_4 in the gas produced by the reaction is less than 0.25. Increasing the reaction temperature and the molar ratio of O_2/CH_4 can inhibit the formation of carbon deposition. When the maximum values of H2 and CO in the gas produced by the reaction are different, the corresponding reaction conditions are different, but they overlap under certain conditions. When the CO_2/CH_4 molar ratio of landfill gas component is 0.5? 0. 7%, the optimum reaction conditions for the synthesis gas component suitable for Fischer reaction are obtained by contour method, but when the CO_2/CH_4 molar ratio is 1. 1, the corresponding optimum reaction conditions can not be obtained.
【作者单位】：华南理工大学机械与汽车工程学院;
【基金】：广州市科技计划项目(2014J4100014)
【分类号】：X705;TE665.3

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