Five corrugated structured packings are selected based on different liquid flow patterns including seepage flow and film flow. The hydrodynamic and mass transfer performance are studied in order to explore the effect of liquid flow patterns on the performance of structured packings. The experimental results show that liquid mainly presents a seepage flow in the porous structure of SCFP type packing

which benefits the lateral spreading of liquid and uniform distribution of liquid membrane. The SCFP type packing shows the highest mass transfer efficiency and lowest pressure drop when the F factor is lower. Liquid displays a partly seepage flow in the special structure of DMⅢ type packing

which can promote the liquid exchange between two sides of one sheet and intensify liquid turbulence

increasing mass transfer efficiency and reducing pressure drop compared with DMⅠand DMⅡtype structured packings. Liquid flows in the form of film on the surface of BX and DMⅠtype packings and this flow pattern results in a high velocity and a short residence time of liquid film. Thus the mass transfer efficiency of BX and DMⅠtype packings is lower than that of SCFP and DMⅢ type packings. This study shows that the structured corrugated packing with seepage flow presents good performance

opening up a new method to develop structured corrugated packings.