半焦在富含甲烷气体转化制备合成气中的作用

EFFECT OF COKE ON THE CONVERSION OF METHANE TO PRODUCE SYNGAS

用一个石英玻璃管反应器考察了 70 0℃～ 1 30 0℃下 ,半焦对甲烷的水蒸气和二氧化碳重整制备合成气的影响 .实验发现 ,半焦的存在明显提高甲烷的转化率 ,降低甲烷的开始转化温度 .通过对反应前后 C原子和 H原子的物料恒算 ,可以得出半焦的重量在甲烷的二氧化碳重整反应过程中几乎没有变化 ,半焦对重整反应的作用类似于“催化”过程 .

A quartz tubular reactor has been used to study the effect of coke on the steam and carbon dioxide reforming reactions of methane.The experiments were carried out at 700℃- 1 300 ℃ .The results show that the conversion of methane to produce syngas obviously increased with the present of coke in the reactor,and the initial temperature of methane decomposition were down.From the material balance analysis of C and H atom,it can be seen that the mass of coke is constant during the carbon dioxide reforming reaction of methane.The function of coke for the carbon dioxide reforming of methane is similar to the “catalysis” process.