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Sectionalised bubble column: Gas hold‐up and wall side solid—Liquid mass transfer coefficient
Author(s) -
Patil V. K.,
Joshi J. B.,
Sharma M. M.
Publication year - 1984
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450620210
Subject(s) - bubble , sparging , mass transfer coefficient , mass transfer , dissolution , chemistry , viscosity , gas bubble , analytical chemistry (journal) , materials science , thermodynamics , chromatography , mechanics , composite material , physics
The effect of gas sparger type, clear liquid height, liquid viscosity and addition of electrolyte on fractional gas hold‐up in a 0.38 m i.d. sectionalised bubble column (SBC) was studied for superficial gas velocities ranging from 0.03 to 0.15 m s −1 . A study of the wall side solid–liquid mass transfer coefficient, k SL , has been made by considering the dissolution of copper in acidic dichromate solutions. The variation of k SL with axial distance in a section for different gas velocities has been explained. A comparison between the performance of sectionalised bubble columns and conventional bubble columns has been presented. In some cases, the SBC may prove to be superior to bubble columns in practice.