焦炉荒煤气中焦油组分重整制氢的热力学分析

摘要 选择1-甲基萘作为焦炉荒煤气中焦油组分的模型化合物，采用HSC Chemical软件对其蒸汽重整反应进行了热力学分析.研究发现，温度和S/C比(Steam/Carbon摩尔比)的增加能够促使H2产量和浓度的增加，但是当温度或S/C比分别达到500℃，8∶1以上，H2产量、浓度均变化不大；反应压力的增加不利于重整反应的进行，致使H2产量降低，确定最佳的蒸汽重整反应压力为常压；当加入CaO作为CO2吸附剂时，发现重整反应进程被强化，H2产量、浓度均得到显著提升，当CaO/C比(CaO/Carbon摩尔比)为2∶1，S/C比为8∶1，温度在400~650℃时，H2产率和体积分数均能达到95%以上.
Abstract：The thermodynamic analysis of the steam reforming of 1-methylnaphthalene as the tar model compound of the raw coke oven gas was carried out using the HSC Chemical software. With the increases of temperature and the steam/carbon (S/C) ratio， the amount and concentration of H2 gradually increased， however their changes became gentle when the temperature passed 500℃ or the S/C ratio was over 8∶1.With the pressure increasing， the H2 amount gradually decreased， therefore the optimal pressure for 1-methylnaphthalene steam reforming was the normal pressure. After CaO was added as CO2 sorbent， the steam reforming reaction process was enchanced， resulting in the significant improvement of the H2 amount and concentration. With the CaO/C ratio of 2∶1 and S/C ratio of 8∶1， the H2 amount and concentration could reach over 95% at the temperature of 400~650℃.