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Gas hold‐up and volumetric mass transfer coefficient in bubble columns under foam control
Author(s) -
Takesono Satoshi,
Onodera Masayuki,
Yamagiwa Kazuaki,
Ohkawa Akira
Publication year - 1995
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280640212
Subject(s) - mass transfer coefficient , mass transfer , bubble , baffle , materials science , defoamer , composite material , chemistry , mechanics , thermodynamics , chromatography , dispersant , physics , dispersion (optics) , optics
Experimental measurements of the gas hold‐up and volumetric mass transfer coefficient have been made for baffle columns (BCs) reacting various foaming liquids under mechanical and chemical foam control. The gas hold‐up and the volumetric mass transfer coefficient in a mechanical foam‐control system (BCs with rating‐disk mechanical foam‐breakers) were larger than those in a chemical foam‐control system (BCs with an antifoam agent added). Correlations for the gas hold‐up and the volumetric mass transfer coefficient in BCs under foam control are presented. Comparison of the volumetric mass transfer coefficient between the mechanical foam‐control system and the chemical foam‐control system in terms of the specific power input also demonstrated higher mass transfer performance and saving power requirements for the mechanical foam‐control system.