Experimental Study of Geometrical Effects With Internal Loop on Gas Hold up and Flow Pattern in Gas-Liquid Bubble Column Reactor

The hydrodynamic of internal reactors with a riser diameter of 4cm and 5cm operating with air and water system have been experimentally investigated for a range of superficial gas velocity. Here we have used 2 internal loops with 4cm and 5cm internal diameter. For each velocity we have measured the gas hold up. The gas phased sparged in to the column by means of 4 different spargers with different number of holes in 1mm diameter. The results show that the gas distributer plays an important role on the evolution of the bubble size distribution in gas-liquid reactor. So one of the main subjects of the present work is to study the influence of sparger design.