Abstract
In this work the gas dispersion of a Rushton disc turbine impeller was investigated in a horizontal non-baffled stirred vessel in comparison with the normal vertical baffled stirred vessel. The Rushton turbine and vertical baffled vessels are commonly used for gas dispersion mixing. The flooding/loading transition and the gas–liquid mass transfer coefficient kLa were measured at the gas flow rates of 0.5–2vvm. The results indicated that kLa against energy dissipation rate in the horizontal tank was better than that in the vertical baffled tank, and roughly equal loading/flooding transition for the two kinds of vessels was obtained. The correlations of kLa and the loading/flooding transition were correlated according to the present data.
