Gas Phase Pressure Drop Characteristics in Rotating Packed Bed with Triangular Spiral Packing

In order to understand the impact factors and its laws in rotating packed bed with triangular spiral packing,the gas phase pressure drop characteristics was investigated using air-water system. The gas phase pressure drop was measured under different gas flux,liquid flux and rotating speed. The exper- imental data show that both the dry and wet bed pressure drops in rotating packed bed increase with increasing gas flux and increasing rotating speed. But with increasing of liquid flux,the wet bed pressure drop decreases firstly and then keeps stable. The rotating packed bed has the merit of small pressure drop and big operational flexibility. The gas phase pressure drop was divided into four parts,namely local pressure drop,centrifugal force pressure drop,outside and inside cavities vortex pressure drop and pad- ding friction pressure drop. Among them,vortex theory was utilizied to describe outside and inside cavi- ties vortex pressure drop,and the description for the padding friction pressure drop are new methods. The mathematial model reflects the laws of gas pressure drop well.