导向筛板-导向浮阀塔板流体力学及传质性能

Hydrodynamic and mass transfer performance of flow-guided sieve-valve tray

设计了一种高分离效率、高操作弹性的新型导向筛板-导向浮阀塔板(FGS-VT)。并在直径为600 mm的有机玻璃塔内,以空气-水-氧气为物系,测定了3种结构不同的FGS-VT的流体力学性能和传质性能,包括干板压降、湿板压降、漏液量、雾沫夹带率和塔板效率等。通过与筛孔、导向孔大小和排布方式相当的导向筛板在相同条件下的实验数据对比得出结论,带有14个浮阀的导向筛板-导向浮阀(FGS-VT-14-8)具有更低的干板压降和湿板压降,更大的操作弹性(更低的漏液和雾沫夹带)和更高的塔板效率。

A new flow guided sieve-valve tray （FGS-VT） with high efficiency and operating flexibility is designed. The hydrodynamics and mass transfer performance of three types of FGS-VTs, including dry-plate pressure drop, wet-plate pressure drop,weeping, entrainment and efficiency, are tested in an air-water-oxygen system within a 600 mm diameter plexiglass column. Compared with the flow-guided sieve with similar size and arrangement of sieve holes and flow-guided holes ,the FGST with 14 valves （FGS-VT-14-8） has the advantages as foUows：lower dry-plate pressure drop and wet-plate pressure drop, greater operating flexibility and higher plate efficiency.