Gas Dispersion Characteristics of Newly Developed Impellers in a Stirred Vessel

Noboru Otomo; Waldemar Bujalski; Alvin William Nienow; Koji Takahashi

doi:10.1252/jcej.36.166

Transport Phenomena, Fluid Mechanics and Mixing

Gas Dispersion Characteristics of Newly Developed Impellers in a Stirred Vessel

Noboru Otomo, Waldemar Bujalski, Alvin William Nienow, Koji Takahashi

Author information

Keywords: Gas Dispersion, Lightnin A315, Hollow Blade Disc Turbine, Power Consumption, Gas Hold-Up, Cavity Structure, Flooding-Loading Transition

JOURNAL RESTRICTED ACCESS

2003 Volume 36 Issue 2 Pages 166-171

DOI https://doi.org/10.1252/jcej.36.166

Details

Abstract

Gas dispersion characteristics of a single impeller in a fully baffled cylindrical pilot scale stirred vessel (T = 0.72 m) were studied for newly developed impellers, which are a 6-bladed hollow blade disc turbine (6HB) and a Lightnin A315 (A315), in addition to the traditional 6-bladed Rushton disc turbine (6DT), under unarerated and aerated conditions in water. The power drawn, gas hold-up and k_La (oxygen mass transfer rate) obtained were compared with those for the 6DT reported in literature. As a result, it was found that the gas handling capacities of the 6HB and A315 are superior to that of the 6DT.

Corresponding author