中文摘要：

为强化甲醇水蒸气重整制氢反应过程,以出口甲醇转化率和氢气含量为目标考察了反应器中催化活性梯级分布和均匀分布对制氢效果的影响。利用计算流体力学软件FLUENT中的通用有限速率模型对反应器进行了二维数值研究。计算表明,可通过催化活性由低到高的梯级分布提高反应器出口甲醇转化率和氢气含量。与活性均匀分布相比,反应器中的冷点温差降低了10K,实验表明反应器出口H2含量提高约8.5%,CO含量降低约0.19%。

英文摘要：

In order to intensify the process of methanol steam reforming,this paper studies the effect of equally and gradiently distributed catalytic bed on methanol conversion and H2 content at reactor outlet. With the application of general finite reaction rate model in CFD software of FLUENT,2-D simulation of this process is carried out.The results show that methanol conversion and outlet H2 content can be increased through gradiently distributed catalytic bed with higher catalytic activity at inlets and lower at outlets. Compared with the equally distributed catalytic bed,the cold spot temperature difference in the microreactor reduces by 10 K,experiment results prove that H2 content at outlets increases about 8.5% and CO decreases by about 0.19%.