Sorption-enhanced steam methane reforming represents a highly auspicious technological breakthrough that delivers dual benefits of enabling the CO₂ capture while also facilitating hydrogen production. The SE-SMR process in the riser is explored by MP-PIC model. After validating this model with experimental measurements, the solid thermal properties at particle scale and gas–solid hydrodynamics are evaluated, and the effect of solid flux and superficial velocity is discussed. Findings from the results suggest that: particles present axial and radial non-uniform distributions, featuring the dense-bottom and dilute-upper distribution, the core-annulus structure. In comparison to catalyst particles, sorbent particles demonstrate a larger heat transfer coefficient (HTC) in both axial and radial directions, and a smaller Reynolds number. The HTC of sorbent particles is approximately 1.36 times higher than that of catalyst particles. Large HTC is observed in the central region above solid inlet. The HTC of the particles in the center is three to five times that of the particles at the side walls.

中文翻译：

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循环流化提升管反应器中吸附增强蒸汽甲烷重整过程的数值评价


吸附增强蒸汽甲烷重整代表了一项非常吉祥的技术突破，它提供了双重好处，即能够捕获 CO₂，同时也促进了氢气的生产。通过 MP-PIC 模型探索了冒口中的 SE-SMR 过程。在用实验测量验证了该模型后，评估了颗粒尺度和气-固流体动力学的固体热特性，并讨论了固体通量和表面速度的影响。结果表明：颗粒呈现轴向和径向不均匀分布，具有致密底部和稀上部分布，即核心环状结构。与催化剂颗粒相比，吸附剂颗粒在轴向和径向上都表现出较大的传热系数 （HTC），并且雷诺数较小。吸附剂颗粒的 HTC 大约是催化剂颗粒的 1.36 倍。在固体入口上方的中央区域观察到大型 HTC。中心颗粒的 HTC 是侧壁颗粒的 3 到 5 倍。