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Free entrainment behavior in sieve trays
Author(s) -
Cheng S. I.,
Teller A. J.
Publication year - 1961
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.690070223
Subject(s) - tray , entrainment (biomusicology) , mechanics , drag , drop (telecommunication) , sieve (category theory) , sieve analysis , particle (ecology) , chemistry , meteorology , geology , mathematics , physics , geotechnical engineering , engineering , mechanical engineering , telecommunications , combinatorics , rhythm , acoustics , oceanography
Analysis was made of the behavior of entrained particles in the zone between trays in a sieve tray column for the air‐water system. The effects of drop‐size distribution, projection velocity, drag, and gravity were evaluated with respect to the quantity of entrained liquid between trays. The drop‐size distribution was found to be logarithmic in nature. The entrainment as a function of distance above the froth is estimated in Equation (12) where d H may be calculated from projection velocities and column superficial velocity for particle sizes greater than 400 μ. Confirmation of the proposed entrainment equation via experimental data was achieved within an average deviation of 28%. It was anticipated from the relationships developed that a leveling off of entrainment at zones in proximity to the froth and at escape velocity heights would be observed. Confirmation was evident at zones in proximity of the froth and upper zone tendencies were observed.