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Phase and area contributions to mass transfer kinetics
Author(s) -
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.690070128
Subject(s) - mass transfer , thermodynamics , chemistry , kinetics , diffusion , phase (matter) , volumetric flow rate , flow (mathematics) , range (aeronautics) , analytical chemistry (journal) , chromatography , mechanics , materials science , physics , organic chemistry , quantum mechanics , composite material
A relationship has been developed describing quantitatively the factors affecting packed column performance. The relationship, based on the Colburn equation, is proposed within the limits of a consistent flow regime in the liquid phase. Via separation of the effects of packing geometry on diffusion rates and the effect of area variation with flow rate, single phase transfer rates can be obtained from over‐all mass transfer data. The appearance of a maximum in the relationship of H oG vs. G in the range of 60% of flooding is explained by the large increase of the term H oG / a i (∂ a i /∂ G m ) relative to the term 1/ a i (∂ H G a i /∂ G m ). The ammonia‐air‐system behavior is analyzed via this relationship. It is found that the gas phase resistance varies between 72 and 94% of the over‐all resistance as a function of flow rate.