Rotating packed bed (RPB) has been widely noted for its good mass transfer performance and tangible size savings, and its advantages are especially obvious in space-intensive scenarios, such as purification of natural gas on offshore platforms. Liquid maldistribution in RPBs has a serious impact on mass transfer performance. However, it is difficult to accurately obtain and predict the liquid flow characteristics and liquid distribution in RPBs by experimental methods. Therefore, the liquid flow characteristics and liquid distribution analysis of multi-nozzle RPBs based on computational fluid dynamics (CFD) models is performed in this paper. The simulation results indicate that increasing of the number of nozzles and nozzle width at two different rotational speeds increases the liquid holdup and decreases the degree of liquid dispersion. In addition, a liquid maldistribution index within RPBs is proposed and investigated. The circumferential distribution of the liquid becomes uniform as the number of nozzles increase, but the uniformity gets worse as the width of nozzle increases, under the same total liquid flow rate. The more the number of nozzles, the more uniform the overall liquid distribution; on the contrary, the larger the nozzle width, the more uneven the overall liquid distribution.

旋转填充床（RPB）以其良好的传质性能和明显的尺寸节省而闻名，在空间密集型情况下（例如在海上平台上净化天然气），其优势尤为明显。RPB中的液体分布不均会对传质性能产生严重影响。但是，通过实验方法难以准确地获得和预测RPB中的液体流动特性和液体分布。因此，本文基于计算流体动力学（CFD）模型对多喷嘴RPB进行了液体流动特性和液体分布分析。仿真结果表明，在两种不同转速下，喷嘴数量的增加和喷嘴宽度的增加增加了液体的滞留量，降低了液体的分散程度。另外，提出并研究了RPB内的液体分布不均指数。在相同的总液体流量下，液体的周向分布随着喷嘴数量的增加而变得均匀，但是随着喷嘴宽度的增加，均匀性变差。喷嘴数量越多，整体液体分布越均匀；相反，喷嘴宽度越大，整体液体分布越不均匀。