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利用介质阻挡放电辅助甲烷蒸汽重整试验平台进行了大量试验,基于试验数据系统地分析了350-500℃温度下蒸汽甲烷摩尔比(S/C)、反应物驻留时间、壁面温度及输入功率等对甲烷转化率、有效碳回收率及产物选择性等指标的影响规律,并考察了不同影响因素之间的相互作用关系。研究发现:驻留时间对各指标的影响最为明显,在不同壁面温度下,随着驻留时间的增加,产物选择性出现转折性变化,由60%左右下降到20%左右;与驻留时间的影响不同,随着输入功率或S/C的增加,重整特性的各评价指标均呈现缓慢增长趋势;而温度对等离子体辅助甲烷蒸汽重整结果是否有影响与驻留时间、输入功率等参数有关,只有当驻留时间大于0.59 s时,温度对重整反应的影响变得较小,且当输入功率也大于80 W时,温度对重整反应不再有影响。
Based on the experimental data, the steam methane molar ratio (S / C), reactant residence time, wall temperature and input power at 350-500 ℃ were systematically analyzed by using dielectric barrier discharge assisted methane steam reforming test platform. On methane conversion rate, available carbon recovery and product selectivity and other indicators of the impact of law, and investigated the interaction between different influencing factors. The study found that: the dwell time of the most obvious impact on each indicator, at different wall temperatures, with the dwell time increases, the product selective turning point changes from about 60% down to about 20%; and dwell time , With the increase of input power or S / C, all the evaluation indexes of reforming characteristics showed a slow increasing trend; and whether temperature had any effect on plasma-assisted steam reforming of methane and its residence time, input power, etc. Only when the residence time is more than 0.59 s, the influence of temperature on the reforming reaction becomes smaller, and when the input power is greater than 80 W, the temperature has no effect on the reforming reaction.