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Regional Mean Bubble Diameters and Gas Holdup in Agitated Gas‐Liquid Contactors
Author(s) -
Markopoulos J.,
Kadoglou E.,
Papaevangelou D.,
Zavitsanou A.
Publication year - 2000
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/(sici)1521-4125(200004)23:4<337::aid-ceat337>3.0.co;2-4
Subject(s) - impeller , bubble , contactor , sauter mean diameter , mechanics , dispersion (optics) , materials science , volumetric flow rate , work (physics) , chemistry , thermodynamics , physics , optics , nozzle , power (physics)
Gas‐liquid contacting in mechanically agitated vessels is widely used in the process industry. Bubble size measurements at different flow regions in the vessel provide useful information for the mechanisms of gas dispersion and gas‐liquid flow. In this work, bubble size distributions and distributions of Sauter mean bubble diameters at four different regions in air‐water and air‐NaCl solution systems agitated by a six‐blade disk turbine are measured by using the photographic method. The effects of gassing rate, impeller speed and electrolyte presence in the system have been examined.