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    张家佳, 王亦飞, 毛霞君, 章岳峰, 于广锁. 穿流塔板上两相竞争性流动特性[J]. 华东理工大学学报(自然科学版), 2016, (1): 9-14. DOI: 10.14135/j.cnki.1006-3080.2016.01.002
    引用本文: 张家佳, 王亦飞, 毛霞君, 章岳峰, 于广锁. 穿流塔板上两相竞争性流动特性[J]. 华东理工大学学报(自然科学版), 2016, (1): 9-14. DOI: 10.14135/j.cnki.1006-3080.2016.01.002
    ZHANG Jia-jia, WANG Yi-fei, MAO Xia-jun, ZHANG Yue-feng, YU Guang-suo. Competitive Characteristics of Two Phase Flow on the Dual-Flow Tray[J]. Journal of East China University of Science and Technology, 2016, (1): 9-14. DOI: 10.14135/j.cnki.1006-3080.2016.01.002
    Citation: ZHANG Jia-jia, WANG Yi-fei, MAO Xia-jun, ZHANG Yue-feng, YU Guang-suo. Competitive Characteristics of Two Phase Flow on the Dual-Flow Tray[J]. Journal of East China University of Science and Technology, 2016, (1): 9-14. DOI: 10.14135/j.cnki.1006-3080.2016.01.002

    穿流塔板上两相竞争性流动特性

    Competitive Characteristics of Two Phase Flow on the Dual-Flow Tray

    • 摘要: 对一种穿流式固阀塔板进行了流体力学冷态实验考察。采用常温、常压下的空气和水作为实验介质,测试了不同操作条件下塔板的干板压降、全板压降和清液层高度,比较了不同的塔板结构参数对流体力学性能参数的影响。实验结果表明,塔板压降和清液层高度均随着孔中心距和开孔率的减小而增大,而随着孔径的增大而增大。气液两相在穿流塔板上为逆流流动,且随着气液流量的变化呈现出4种不同的流动形态。建立了清液层高度的经验式,且计算值与实验测量值吻合良好。推导了描述穿流塔板独特的流动形态的参数即气体流通分率的数学表达式,计算结果表明,该分率随着孔中心距的减小而减小,并随着孔径和开孔率的增大而减小。

       

      Abstract: This paper addresses an experimental investigation in the hydrodynamic behavior of a new type of dual-flow fixed valve tray.Water/air system was used at atmospheric pressure and ambient temperature.The dry pressure drop,total pressure drop and clear liquid height were measured and the comparisons between different tray geometries were made.The results show that the total pressure drop and clear liquid height have the same trend,which is increased with the decreased center distance of holes,increased hole's diameter and decreased open area.Correlation for clear liquid height is proposed,and the agreement of the experimental and calculated data is demonstrated.The results show that gas and liquid flow counter-currently through the tray holes and four main hydrodynamic regimes are distinguished at different gas/liquid loads.A characteristic parameter named the fraction of holes passing gas is defined and deduced.The calculated results show that the fraction of holes passing gas is reduced by the decreased center distance of holes,while the increased hole's diameter and open area leads to the less fraction.

       

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