Chemical looping hydrogen generation (CLHG) has attracted much attention owing to its simple operation, low carbon capture cost, and high hydrogen purity. The performance of oxygen carrier plays an important role in the CLHG. In this work, considering the variation of internal reaction and coke deposition inside the oxygen carrier during the CLHG process, a packed-bed reactor model is established. The temperature, gas composition, and coke deposition distribution inside the particle and reactor are explored. The results indicate that the reaction progress of the oxygen carrier near the wall is slightly faster than that at the center. The overall conversion rate and coke accumulation of the oxygen carrier near the wall are greater than those at the center.

中文翻译：

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化学循环制氢过程中填充床反应器载氧体性能评估

化学循环制氢（CLHG）因其操作简单、碳捕集成本低、氢气纯度高而备受关注。载氧体的性能在CLHG中起着重要作用。在这项工作中，考虑到CLHG过程中氧载体内部反应和焦炭沉积的变化，建立了填充床反应器模型。研究了颗粒和反应器内的温度、气体成分和焦炭沉积分布。结果表明，靠近壁面的氧载体的反应进程比中心处的略快。靠近壁面的氧载体的总体转化率和焦炭积累量均大于中心处。