导向立体喷射复合塔板的流体力学及传质性能研究

设计了一种低压降、大通量、高传质效率的导向立体喷射复合塔板（FVJT），在直径为800 mm的圆形塔内进行冷模实验，测得FVJT的干、湿板压降，雾沫夹带率，漏液率，清液层高度等流体力学数据，并通过富氧水解析实验分析塔板的传质性能；最后，根据干、湿板压降数据拟合得到压降关联式。对比研究了3种不同立体帽罩倾角对塔板性能的影响，结果表明：与新型垂直筛板（New VST）和F1浮阀塔板相比，本文所设计的FVJT干、湿板压降分别降低约20%~30%和10%~20%，传质效率提高了13%~17%，其中立体帽罩倾斜角为6°时传质效率最高。

Hydrodynamics and mass transfer performance of a flow-guided vertical jet composite tray

A three-dimensional mass transfer composite tray with low pressure drop, high flux and high mass transfer efficiency has been designed. A cold model experiment was carried out in a 800 mm diameter circular column. Hydrodynamic data such as dry and wet tray pressure drop, entrainment, weeping, and clear liquid layer height were measured. The mass transfer performance of the flow-guided vertical jet tray (FVJT) was studied by oxygen enriched water desorption. The pressure drop correlation was obtained by fitting the dry and wet tray data. Compared with the new vertical sieve tray (VST) and the F1 valve tray, the FVJT tray has a lower pressure drop. The experimental results show that:compared with new VST trays and F1 float valve trays, the dry and wet pressure drop of the FVJT tray is reduced about 20%-30% and 10%-20% respectively, whilst the mass transfer efficiency is improved by about 13%-17%. The mass transfer efficiency is a maximum when the inclination angle of the three-dimensional cap is 6°.