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首页> 外文期刊>The Korean journal of chemical engineering >Conceptual feasibility studies of a CO_x-free hydrogen production from ammonia decomposition in a membrane reactor for PEM fuel cells
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Conceptual feasibility studies of a CO_x-free hydrogen production from ammonia decomposition in a membrane reactor for PEM fuel cells

机译：PEM燃料电池膜反应器中氨分解产生无CO_x氢的概念可行性研究

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摘要

CO (X) -free hydrogen production from ammonia decomposition in a membrane reactor (MR) for PEM fuel cells was studied using a commercial chemical process simulator, Aspen HYSYSA (R). With process simulation models validated by previously reported kinetics and experimental data, the effect of key operating parameters such as H-2 permeance, He sweep gas flow, and operating temperature was investigated to compare the performance of an MR and a conventional packed-bed reactor (PBR). Higher ammonia conversions and H-2 yields were obtained in an MR than ones in a PBR. It was also found that He sweep gas flow was favorable for X (NH3) enhancement in an MR with a critical value (5 kmol h(-1)), above which no further effect was observed. A higher H-2 permeance led to an increased H-2 yield and H-2 yield enhancement in an MR with the reverse effect of operating temperature on the enhancement. In addition, lower operating temperature resulted in higher X (NH3) enhancement and H-2 yield enhancement as well as NG cost savings in a MR compared to a conventional PBR.
机译：使用商用化学过程仿真器Aspen HYSYSA（R）研究了在PEM燃料电池的膜反应器（MR）中由氨分解产生的无CO（X）的氢气。通过先前报道的动力学和实验数据验证的过程仿真模型，研究了关键操作参数（例如H-2磁导率，氦气吹扫气流和操作温度）的影响，以比较MR和常规填充床反应器的性能（PBR）。在MR中获得的氨转化率和H-2产率高于PBR中。还发现，He吹扫气流有利于在临界值（5 kmol h（-1））的MR中提高X（NH3），在此之上未观察到进一步的影响。较高的H-2磁导率会导致MR中H-2产量增加和H-2产量增加，而工作温度对该增加具有相反的影响。此外，与传统的PBR相比，较低的工作温度导致MR的X（NH3）增强和H-2产率提高，以及NG成本节省。

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