Experimental Study on the Bubble Behavior in Gas-Liquid External Loop Reactors
气液外环流反应器中气泡行为的实验研究

This work dealed with the variation of bubble behavior in axial and radial directions. It was shown that the bubble behavior at the distributor region was axially unsymmetrical. The gas holdup and bubble velocity increased with increasing superficial gas velocity. The gas holdup in both the riser and downcomer and the bubble velocity in the riser decreased gradually from the center to the wall while the bubble velocity in the downcomer was almost uniform in the radial direction. The gas circulating rate increases with increasing superficial gas velocity and the trend of this increase became slower with the increase of superficial gas velocity.