Abstract: Based on the multi-class bubble model and the assumption that bubbles rise in plug flow during dynamic gas disengagement, the function between gas holdup and time was obtained by using the pressure transducing technology. The plot obtained by the model agreed with the plot obtained by experiment. The pressure transducing technology is shown to be a good method for the measurement of hydrodynamics in a bubble column. The changes of gas holdup, large bubble holdup and small bubble holdup, bubble rising velocity with superficial gas velocity and liquid viscosity were obtained by using dynamic gas disengagement.

Key words: 压力传感器, 气含率, 大气泡分数, 小气泡分数, 气泡速度

关键词: 压力传感器, 气含率, 大气泡分数, 小气泡分数, 气泡速度