STUDIES ON TRANSFER PROCESSES IN MIXING VESSELS - HYDRODYNAMIC OF THEMODIFIED RUSHTON TURBINE AGITATORS IN GAS-LIQUID DISPERSIONS

Citation
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
Citations number
30
Categorie Soggetti
Engineering, Chemical
ISSN journal
09230467
Volume
61
Issue
2
Year of publication
1996
Pages
83 - 93
Database
ISI
SICI code
0923-0467(1996)61:2<83:SOTPIM>2.0.ZU;2-7
Abstract
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.