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Mass transfer and effective interfacial areas in packed columns
Author(s) -
Yoshida Fumitake,
Koyanagi Tetsushi
Publication year - 1962
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.690080310
Subject(s) - raschig ring , vaporization , distillation , mass transfer , surface tension , chemistry , packed bed , absorption (acoustics) , evaporation , boiling , acetone , methanol , water vapor , analytical chemistry (journal) , chromatography , chemical engineering , thermodynamics , materials science , composite material , organic chemistry , physics , engineering
Experimental studies on the mass transfer rates were performed for three kinds of operations: vaporization of water into air; absorption of methanol vapor by water; and distillation of three binary mixtures, trichloroethylene‐toluene, ethanol‐water, and acetone‐water, by use of columns of the same diameter packed with 25‐ and 15‐mm. Raschig rings. Correlations are presented for the individual phase height of a transfer unit and also for the effective interfacial areas. The effective areas for a given packing vary depending on the kind of operation as well as on the liquid rate and surface tension. The effective interfacial area for vaporization is significantly larger than that for absorption. The effective area for distillation seems to be roughly the same as that for absorption, if correction is made for the effect of surface tension.