Power, gas dispersion and homogenisation characteristics of Scaba SRGT and rushton turbine impellers.

Mass Transfer Coefficients in Mechanically Agitated Gas‐Liquid Contactors

“…However, modification of the flat geometry of the Rushton blades, by using angled, concave and lancet-shaped blade profiles [22][23][24] results in lower ungassed power fall on gassing, retards impeller flooding and, therefore, indirectly improves the volume-related mass transfer coefficients, despite the fact that the gas-liquid mass transfer ability of these systems does not depend on blade design, and more generally on impeller types, studied. This result is in full agreement with the literature suggestion that power input and gassing rate, rather than impeller type are the most important factors for mass-transfer efficiency [7,22,25,26]. On the other hand, some of the axial impellers are also capable of dispersing gas in liquid systems, yielding satisfactory mass transfer performances and high hydrodynamic efficiencies at reduced energy requirements compared to radial turbines [18,27].…”

Flow and Turbulence in the Discharge of Radial Pumping Turbines: Influence of the Turbine Type

“…[15]; while for the 6SRGT impeller, it is 1.5. [3]. The power number is dependent not just only on the bottom clearance, but in the case of multiple turbines, on the number of impellers and the impeller spacing [16] which explains the deviation of the commonly used values from our measured values.…”

Stirring and Stirred‐Tank Reactors

“…4b) in the late 1980s [51]. Many similar impellers are now available [26,51,52], the change in relative power draw arising because large cavity formation is suppressed [53].…”