Study on the flow structures and distribution law of rotational-perforated coupling flow in tridimensional rotational flow sieve tray

Tridimensional rotational flow sieve trays (TRST) have a variety of gas-liquid flow structures, such as rotational flow, flow through one perforation and flow through two perforations, it is important to have a deep under-standing of the coupling and distribution laws of rotational flow and flow through perforations for the selection and regulation of actual working conditions. In this study, the flow structures and proportions for the rotatio-nal-perforated coupling flow in a TRST were analyzed and predicted using the measured distribution ratio for the three-blade unit. The results showed that the gas phase mainly flowed in a rotational pattern, and its pro-portion was approximately 62%-83%. The proportion of flow through perforations in the liquid phase was relatively large, and the proportion of flow through one perforation was approximately 51%-57%. The pro-portion of flow through two perforations was approximately 27%-29%.