新型导向立体喷射填料式塔板的流体力学及传质性能研究  

Hydrodynamics and mass transfer performance of a flow-guided jet packing tray(FJPT)

作　　者：李群生[1] 张苗[1] 程闯[1] 石殷 张来勇[3] 刘玉东[3] 

机构地区：[1]北京化工大学化学工程学院,北京100029 [2]山东省高青县经济和信息化局,山东高青256300 [3]中国寰球工程公司,北京100012

出　　处：《北京化工大学学报（自然科学版）》2016年第6期22-28,共7页Journal of Beijing University of Chemical Technology(Natural Science Edition)

基　　金：国家"973"计划(2013CB733603)

摘　　要：设计了一种大通量、高效率的新型导向立体喷射填料式塔板(FJPT),以空气-水-氧气为物系,在直径为500 mm的有机玻璃塔内进行冷模实验,测定其流体力学性能和传质性能,包括干板压降、湿板压降、漏液、雾沫夹带、清液层高度和塔板效率等。由实验数据关联得到干板压降和湿板压降的经验关联式,与现有的新型垂直筛板相比,FJPT压降较低。通过改变板上矩形升气孔大小进行对比实验,得到的结果表明:矩形升气孔越大则塔板压降越低,但影响不明显;矩形升气孔越小,雾沫夹带和漏液率越小,气相负荷上限越高;开孔大小有一个最合适的值使塔板效率最高。A new flow-guided jet packing tray （FJPT） with high flux and efficiency has been designed in this work. The hydrodynamic and mass transfer performance of the FJPT, including tray pressure drop, weeping, en- trainment, clear liquid height and tray efficiency, have been studied with cold-flow model experiments, using an air-water-oxygen system in a q）500 mm plexiglass column. According to the experimental data the empirical for- mulae for the FJPT have been established in terms of dry pressure drop and wet pressure drop. Compared with New VST, FJPT has lower pressure drops. Changing the rectangular pore size on the plate shows that a larger rectangular pore leads to lower pressure drops, although the effect is not marked; a Smaller rectangular pore leads to less weep- ing, less entrainment and a higher gas load limit. Thus there is an optimum size for the pore leading to maximum tray efficiency.

关 键 词：导向立体喷射填料式塔板(FJPT) 流体力学 传质性能 

分 类 号：TQ053.5[化学工程]