Power consumption and gas-liquid mass transfer volumetric coefficient in amechanically agitated vessel with wire-gauze impeller

Power consumption and gas-liquid mass transfer volumetric coefficient in a mechanically agitated vessel with wire-gauze impeller were measured over a wide range of Reynolds number, Tile power consumption of the wire-gauze imp eller did not decrease so much with aeration and was almost independent of the gas flow rate in the turbulent flow region, contrast to that of convent ional impellers such as tur bine and paddle, The agitation power correlatio n of the wire-gauze impeller was proposed in the operating condition of the gross circulation of the gas back into the impeller. The mass transfer volumetric coefficient was empirically correlated with bo th the physical properties of liquid and the agitation and aeration power i nput per unit liquid volume in the same manner as that by Nishikawa et al, (1981b), where it depended on the void fraction of the wire gauze blade.