A 3D printed, structured packed-bed device has been developed to facilitate mass and heat transfer in multiphase-flow systems. This multifunctional device is compatible with commercially available packing elements used to effectively contact gas-liquid or liquid-liquid systems, and can be positioned along a packed bed to remove excess heat or supply thermal energy to a reactive system. The device is investigated for process intensification of CO₂ absorption by aqueous amines. The design, manufacturing, and functional characterization of the device are reported here. Its hydrodynamic properties are measured and compared to a polymer print of the same design. Pressure drop measurements are obtained for a dry system at various gas flow rates and also for an irrigated system at six liquid flow rates. The heat transfer properties of the process intensification device were explored by studying the behavior of the temperature profile inside the column for a gas only system before and after cooling. The behavior of the temperature profile was subsequently studied for an irrigated system. In order to better understand the physical behavior of the system, we developed a rigorous heat-transfer model using MFIX, a multiphase computational fluid dynamics software, and compared modeling results to experimental data. The overall heat transfer coefficient under various flow conditions was determined to be between 32 and 35 W/°C-m².

已经开发出一种3D打印的结构化床装置，以促进多相流系统中的质量和热量传递。该多功能装置与可用于有效接触气-液或液-液系统的市售填充元件兼容，并可沿着填充床放置，以去除多余的热量或向反应性系统提供热能。研究了该设备用于CO _2的过程强化被胺水溶液吸收。该设备的设计，制造和功能特性在此处报告。测量其流体力学性能，并将其与相同设计的聚合物印刷品进行比较。对于干式系统，在各种气体流量下，以及对灌溉系统，在六种液体流量下，均获得了压降测量值。通过研究冷却前后的纯气系统塔内温度曲线的行为，探索了过程强化装置的传热性能。随后研究了灌溉系统的温度分布特性。为了更好地了解系统的物理行为，我们使用了MFIX（一种多相计算流体动力学软件）开发了严格的传热模型，并将建模结果与实验数据进行比较。在各种流动条件下的总传热系数确定为32至35 W /°Cm²。