导向梯形喷射填料式塔板的流体力学与传质性能研究

Hydrodynamics and mass transfer performance of a flow-guided trapezoid spray-packing tray

结合导向孔、填料和立体塔板的优点,设计了一种导向梯形喷射填料式塔板(FTS-PT),在直径为500 mm的有机玻璃塔内采用空气-水-氧气物系进行冷模实验,分别测定了4种梯形角度实验塔板的流体力学性能(包括干、湿板压降,清液层高度,漏液,雾沫夹带)和传质效率。根据实验数据拟合得到FTS-PT塔板的干、湿板压降关联式。与新型垂直筛板和F1浮阀塔板相比,FTS-PT塔板压降较低。综合比较4种角度的导向梯形喷射填料式塔板的流体力学性能和传质效率,结果表明当梯形帽罩倾斜角度为8°时,塔板综合性能最好。

A flow-guided trapezoid spray-packing tray(FTS-PT), combining the advantages of guide hole, packing, and vertical trays, has been designed. In a 500 mm-diameter Plexiglas tower, air-water-oxygen systems were used for cold-flow model experiments. Hydrodynamic parameters, including dry and wet pressure drop, clear liquid layer height, weeping, entrainment and mass transfer efficiency of the four trapezoidal angle experimental trays were measured. On the basis of the experimental data, regression models of dry and wet pressure drops of the FTS-PT were fitted. The pressure drop was lower than those of the new vertical sieve tray and the F1 valve tray. Comparison of the hydrodynamics and mass transfer efficiency of FTS-PT trays with four different angles showed that the performance was optimized when the trapezoidal angle was 8°.