Experimental conditions
The gas–liquid–liquid system investigated in this study concentrates on relatively low dispersed oil phase holdups and gas
flow rates. The gas flow rate range is well controlled from 0 to 0.64 L/min, and the oil phase ranges from 0% to 20% by volume.
Moreover, the gas flow rate can not be set over 1.4 L/min, since
large gas flow rates will make the oil phase difficult to be
dispersed into the continuous phase. Impeller off-bottom clearance used covers from T/2 to T/6.