Three commonly used distributors (i.e., nozzle, packed bed, and foam) were introduced into a multiphase monolith reactor in this work to investigate the pressure drop, liquid holdup and gas–liquid distribution performance by combining experimentation and CFD simulation. The experimental results showed that the nozzle distributor exhibited the better gas-liquid phase distribution and the lowest pressure drop. However, so far, the gas and liquid velocities at the top of the monolith bed, which are crucial for the transition from a single channel to bed scale, have not been studied. Thus, a discrete phase and continuous phase coupling 3D model using CFD simulation was established for the nozzle distributor, and the magnitude and distribution of the gas and liquid velocities at the entrance of the monolith module were investigated. The simulation results showed that the droplets’ velocity reaching the monolith module was very high and had a strong influence on the gas velocity distribution. The increase in superficial gas velocity could enhance the gas distribution to some extent.

在这项工作中，将三种常用的分配器（即喷嘴，填充床和泡沫）引入了多相整体式反应器中，以结合实验和CFD仿真研究压降，液体滞留率和气液分配性能。实验结果表明，喷嘴分配器具有较好的气液相分布和最低的压降。但是，到目前为止，整体床顶部的气体和液体速度对于从单通道到床规模的过渡至关重要，因此尚未进行研究。因此，建立了使用CFD模拟的离散相和连续相耦合3D模型的喷嘴分配器，并研究了整体模块入口处的气体和液体速度的大小和分布。仿真结果表明，液滴到达整体模块的速度很高，并且对气体速度分布有很大的影响。表观气体速度的增加可以在某种程度上增强气体分布。