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The impact of valve tray geometry on the interfacial area of mass transfer
Author(s) -
Liang YinChun,
Zhou Zheng,
Shao Min,
Geng Jiao,
Wu YouTing,
Zhang ZhiBing
Publication year - 2008
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.11489
Subject(s) - tray , mass transfer , turbulence , isotropy , mechanics , work (physics) , breakage , dispersion (optics) , deformation (meteorology) , geometry , chemistry , mechanical engineering , materials science , physics , engineering , mathematics , optics , composite material
The interfacial area of mass transfer is one of the key parameters in valve tray design, and the valve geometry is the important structural parameter that determines the interfacial area. In this work, the hydrodynamic and mass‐transfer characteristics of three different types of valve trays are investigated. The mechanism of bubbles deformation and breakage in the turbulent dispersion system is theoretically analyzed on the basis of Kolmogoroff's isotropic turbulence hypothesis, and a novel model is proposed to predict the interfacial area. The results show that the simulation results agree well with the experimental data. In contrast to most of the conventional models, the present model is capable of evaluating the effects of valve configuration on the interfacial area. The model is expected to guide effectively the design of valve trays which is widely applied nowadays. © 2008 American Institute of Chemical Engineers AIChE J 2008