加压下填料塔中液相轴向反混的研究

摘要

Liquid phase axial mixing was measured with the tracer technique in a packed column with innerdiameter of 0.15 m, in which the structured packing, Mellapak 350Y, was installed. Tap water as the liquid phaseflowed down through the column and stagnant gas was at elevated pressure ranging from atmospheric to 2.0 MPa.The model parameters of Bo andθ were estimated with the least square method in the time domain. As liquid flowrate was increased, the liquid axial mixing decreased. Under our experimental conditions, the effect of pressure onBo number on single liquid phase was negligible, and eddy diffusion was believed to be the primary cause of axialmixing in liquid phase.