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Influence of mass‐transfer‐induced Marangoni effects on magnitude of interfacial area and equipment performance in mass transfer operations
Author(s) -
Sawistowski Henryk
Publication year - 1973
Publication title -
chemie ingenieur technik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.365
H-Index - 36
eISSN - 1522-2640
pISSN - 0009-286X
DOI - 10.1002/cite.330451808
Subject(s) - marangoni effect , mass transfer , surface tension , marangoni number , coalescence (physics) , materials science , mechanics , penetration (warfare) , chemistry , chromatography , thermodynamics , physics , operations research , astrobiology , engineering
Marangoni‐induced surface flow may result in changes of interfacial area under conditions where the depth of penetration of surface flow is comparable in magnitude to the thickness of the liquid layer. Starting from considerations of mass transfer out of and into volumes of variable capacity, conditions are established for the appearance of surface tension gradients leading to contraction or rupture of thin liquid films. The established criteria are employed to discuss interfacial and interdrop coalescence, break‐up of liquid jets and stability of supported films. The resulting conclusions are applied to the analysis of behaviour of spray extraction columns and sieve‐plate distillation columns.