论文部分内容阅读
气体出口是旋转床的重要组成部分,对旋转床流场与气相压降有着重要的影响。研究并流旋转床结构、构建气体出口物理模型,利用RNG k-ε湍流模型,探索不同气体出口结构对并流旋转床流场的影响。模拟结果表明:具有4个切向气体出口的DCRPB3615型旋转床有利于旋转床内速度分布均匀、降低湍动能,减小气相压降。模拟与实验对比表明,DCRPB3615压降比单一径向出口的CRPB3615型旋转床降低10%左右。
The gas outlet is an important part of the rotating bed, which has an important influence on the flow field and pressure drop in the rotating bed. In order to study the effects of different gas outlet structures on the flow field in a cocurrent rotary bed, the cascaded structure of the cocurrent rotary bed was studied and the physical model of the gas outlet was constructed. The RNG k-ε turbulence model was used to explore the influence of different gas outlet structures on the flow field of the cocurrent rotary bed. The simulation results show that DCRPB3615 rotating bed with four tangential gas outlets is favorable for uniform velocity distribution in the rotating bed, reducing turbulent kinetic energy and decreasing gas pressure drop. The simulation and experimental comparison show that the pressure drop of DCRPB3615 is about 10% lower than that of single radial outlet CRPB3615 rotating bed.