Rv. Roman et Rz. Tudose, STUDIES ON TRANSFER PROCESSES IN MIXING VESSELS - HYDRODYNAMIC OF THEMODIFIED RUSHTON TURBINE AGITATORS IN GAS-LIQUID DISPERSIONS, Chemical engineering journal and the biochemical engineering journal, 61(2), 1996, pp. 83-93
The modified blade turbines are attractive alternatives to the standar
d Rushton turbine as they do not require any modification in the elect
rical engine motor and drive assemblies, are simple to manufacture, ha
ve a reduced power consumption and have a greatly increased gas-handli
ng capacity before flooding. The modified blades were obtained through
increase in the blade height of the Rushton turbine simultaneously wi
th perforation of the blade surface. The filled surface of the modifie
d blade is equal to the blade surface of the standard Rushton turbine.
Power dissipation and hydrodynamic regimes using standard and modifie
d Rushton turbine agitators positioned singly or doubly on the same sh
aft, in a gas-liquid system, were investigated. The TP3 modified turbi
ne with the surface fraction S-G/S-C of the perforation equal to 0.353
is optimum on the basis of the power consumption and of the gas-handl
ing and dispersing capacity.