This paper investigates a downdraft multi-injection moving bed reactor (MBR) for the hydrolysis reaction in the copper-chlorine (Cu–Cl) thermochemical cycle for hydrogen production. The numerical modelling is conducted for a variety of system configurations of the MBR, with a focus on reducing the energy requirement of the reactor while achieving high conversion rates. Several design variables are investigated, including reactor volume, injection point location, and quantity of steam injection. The numerical predictions show an approximate 23% increase in CuCl conversion for the multi-injection MBR compared to a single injection design. A maximum conversion of 66.5% is predicted through design parameter variations. Asymptotic behavior for the quantity of injection locations with respect to conversion extent is presented for several different steam to copper ratios. The results and new insights in this paper suggest opportunities for conversion improvement and steam to copper ratio reduction in the hydrolysis reactor through the MBR design.

中文翻译：

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用于热化学制氢水解的多次喷射下吸式移动床反应器

本文研究了用于铜-氯（Cu-Cl）热化学循环中的水解反应以制氢的下吸式多喷射移动床反应器（MBR）。针对 MBR 的各种系统配置进行了数值模拟，重点是降低反应器的能量需求，同时实现高转化率。研究了几个设计变量，包括反应器体积、注入点位置和蒸汽注入量。数值预测显示，与单次注入设计相比，多次注入 MBR 的 CuCl 转化率提高了约 23%。通过设计参数变化预测最大转化率为 66.5%。针对几种不同的蒸汽与铜的比例，提出了注入位置数量相对于转化程度的渐近行为。本文的结果和新见解表明，通过 MBR 设计可以提高水解反应器的转化率并降低蒸汽与铜的比率。