关键词: 旋转床, 欧拉-拉格朗日, 溶质渗透模型, 二氧化碳吸收

Abstract: Simulation and experimental research were performed to study the mass transfer process of rotating packed bed in closed-cycle diesel engine. A 3-D physical model was set up. Euler-Lagrange model was used to solve the gas-liquid phase flow field in the model. Based on Higbie’s percolation theory，gas phase source term was set up to simulate the process of water dissolving CO2. Experiments were conducted to determine the effect of different operation parameters on absorption ability. The result showed that the mass transfer process was more intense around the distributor and mesh wire. The performance was better with higher absorption factor and faster rotational speed，also with lower inlet CO2 concentration. The number of transfer unit obtained from simulation was similar with that obtained from experiments，and the averaged relative error was around 10% and the maximum error was 20.6% so the source term could simulate the actual absorption process and the actual CO2 absorption process could be simulated.

Key words: rotating packed bed（RPB）, euler-lagrange model, percolation model, CO2 absorption