Abstract
Rotating packed bed (RPB) technology shows great potential for post-combustion capture. However, the capture process inside the full RPB is difficult to simulate, due to the complexity of the process and the neglect of the CO2 capture in the outer cavity zone. In this paper, a full 3D CFD model, including the packing and the inner and outer cavity zones, has been established employing the Eulerian porous medium method coupled with various sub-models. The CO2 capture performance in the packing and outer cavity zones has been quantitatively analyzed under different operating conditions. The simulation results show good agreement with the experimental data, and the contribution of the outer cavity zone to the CO2 capture of the RPB is in the range of 28 %∼42 %. This work provides a new approach to efficiently simulate the mass transfer process in the RPB.
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