Flow characteristics of blade unit of a tridimensional rotational flow sieve tray under concurrent gas–liquid flow,AIChE Journal

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Flow characteristics of blade unit of a tridimensional rotational flow sieve tray under concurrent gas–liquid flow
AIChE Journal ( IF 3.5 ) Pub Date : 2020-06-15 , DOI: 10.1002/aic.16454
Hongkai Wang ₁ , Meng Tang _{1,

2} , Dewu Wang ₁ , Yan Liu ₁ , Yishuo Zhang ₁ , Baisong Hu ₁ , Ruojin Wang ₁ , Shaofeng Zhang ₁

Affiliation

The flow characteristics of the blade unit of a tridimensional rotational flow sieve tray were investigated. First, the flow patterns are defined under different liquid arrangement methods. They are bilateral film flow, continuous perforated flow, and dispersion‐mixing flow in overflow distribution, film and jet flow and jet and mixed flow in spray distribution. Second, the time and frequency domain analysis of the differential pressure pulsation signal in the blade unit is carried out, the main frequencies range is 2.0−5.5 Hz. The influence of perforation and mixing intensity on the flow pattern transition is clarified. Third, the rotational flow ratio of the gas–liquid phase is measured, the gas phase rotational flow range is 0.55–0.78, and the liquid phase range is 0.15–0.42. The influence of the operating conditions on the distribution of the rotational and perforated flow is investigated. Finally, a prediction model for the rotational flow ratio is proposed.

中文翻译：

三维液流同时流动的三维旋转筛塔盘叶片流动特性

研究了三维旋转流筛塔盘叶片单元的流动特性。首先，在不同的液体布置方法下定义流动模式。它们是双向的薄膜流，连续的穿孔流，溢流分布中的分散混合流，薄膜和喷射流以及喷射分布中的喷射流和混合流。其次，对叶片单元中压差脉动信号进行时域和频域分析，主频率范围为2.0-5.5 Hz。明确了射孔和混合强度对流型转变的影响。第三，测量气相-液相的旋转流量比，气相旋转流量范围为0.55-0.78，液相范围为0.15-0.42。研究了运行条件对旋转流量和穿孔流量分布的影响。最后，提出了旋转流量比的预测模型。

更新日期：2020-08-10

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