Gas holdup performance of mechanically agitated gasliquid reactor with dual impellers of hydrofoil k5 and Rushton turbine

Fractional gas holdup was measured in i.d. 0.786 m vessel with dual impellers of hydrofoil k5 and Rushton turbine. The effects of impeller combination models, impellers pitch, location of pipe gas spargers and discharge direction on gas holdup were investigated. The upflow and downflow models of hydrofoil k5 impeller were studied. Correlations of fractional gas holdup to specific power consumption and surface gas velocity were developed for the dual combination impellers of hydrofoil k5 and Rushton turbine.