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Effect of temperature on flow regimes and gas hold‐up in a bubble column
Author(s) -
Grover G. S.,
Rode C. V.,
Chaudhari R. V.
Publication year - 1986
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.5450640321
Subject(s) - electrolyte , distributor , coalescence (physics) , bubble , turbulence , thermodynamics , chemistry , flow (mathematics) , materials science , mechanics , analytical chemistry (journal) , chromatography , electrode , physics , astrobiology
The effect of temperature on the gas hold‐up and flow regimes for air—water and air—electrolyte solutions (NaCl and CuCl 2 ) was studied in a bubble column with a sintered glass disc distributor. For the air—water system, the gas hold‐up was found to decrease with increase in temperature. For the air—electrolyte solutions, increase in temperature resulted in increased gas hold‐up at lower gas velocity, while at higher gas velocity the gas hold‐up was found to decrease with temperature. The gas velocity u gT for transition from bubble flow to churn turbulent flow was found to decrease with increase in temperature as a result of increased coalescence. In the presence of electrolytes, u gT was found to be higher than that for water.