Gas-Liquid Contact Area in Baffled Horizontal Stirred Vessels

Abstract

Gas-liquid contact areas in baffled horizontal stirred vessels equipped with flat-blade turbines were determined by means of gas absorption experiments on the NaOH-CO₂ system and the Na₂SO₃-O₂ system containing cobalt ion as a catalyst, accompanied by a pseudo-first order reaction. Effects of operating conditions, vessel conditions and power consumption on gas-liquid contact area were elucidated.
Contact areas were correlated with the ratio of liquid volume to vessel volume, vessel length, number of impellers, number of blades and Froude number in the region of relatively low Froude number (Fr<0.8). In the region of high Froude number (Fr>0.8), contact areas were not correlated by Froude number, but by power consumption per unit volume of liquid.