Hydrodynamics and mass-transfer of tridimensional parallel flow trays

王胜坤

doi:10.3969/j.issn.0438-1157.2012.01.011

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Hydrodynamics and mass-transfer of tridimensional parallel flow trays

更新时间：2025-12-10

- Hydrodynamics and mass-transfer of tridimensional parallel flow trays
- CIESC Journal Issue 1, Pages: 84-89(2012)
- 作者机构：
  
  河北工业大学海水资源高效利用化工技术教育部工程研究中心
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2012.01.011
  CLC：
- Online First：05 January 2012，
  
  Published：05 January 2012
- 稿件说明：
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王胜坤. Hydrodynamics and mass-transfer of tridimensional parallel flow trays[J]. CIESC Journal, 2012, (1): 84-89.
DOI：

王胜坤. Hydrodynamics and mass-transfer of tridimensional parallel flow trays[J]. CIESC Journal, 2012, (1): 84-89. DOI： 10.3969/j.issn.0438-1157.2012.01.011.

摘要

新型立体连续传质液体并流塔板是将LLC-Tray与两种并流流型相结合开发而成的新型塔板。通过实验测定了新型塔板的干、湿板压降，雾沫夹带，漏液等流体力学性能和传质性能，并进行关联得到了相应公式。结果表明，新型塔板板压降较低，雾沫夹带较低，液体处理量相对LLCT提高30%。

Abstract

Parallel flow trays have attracted considerable attention to its high mass-transfer efficiency.The new tridimensional parallel flow tray with continuous mass-transfer combines two parallel flows and LLC-tray(LLCT).The hydrodynamic characteristics of the tray

such as dry-pressure-drop

wet-pressure-drop

entrainment and weeping

and mass-transfer efficiency were measured and relevant correlations were obtained.The pressure drop and entrainment of the tray were lower.In a certain range of liquid flux

the effect of liquid flux on entrainment was negligible.When the gas velocity decreased to a critical point(the gas velocity through the plate hole was about 12 m·s-1)

the weeping of ring flow started earlier than the converged flow.The liquid flow rate was 30% higher than that with LLCT because the parallel flow tray avoided the liquid stagnation zone on common countercurrent trays.With several downcomers the flow distance of liquid was shorter and the gradient of liquid level was reduced.The mass transfer efficiency of the tray was higher than that of LLCT and the efficiency of ring flow was higher than converged flow because of different length of liquid passage.

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