اثر كشش سطحي بر ماندگي فاز گاز و توزيع اندازه حباب در رژيم جريان همگن ستون هاي حباب كار با مقطع مستطيل

Effect of Surface tension on gas hold up and bubble size distribution in bubbly flow regime in Rectangular Bubble Column

Bubble columns are widely used in different chemical processes. Gas hold-up and bubble size are two important hydrodynamic parameters in the design and operation of these columns.In this study, a rectangular bubble column is designed, constructed and operated with solutions of different surface tension. The effects of surface active substances on the bubble size and gas hold-up were studied through some experiments in the bubble column. A number of experiments using air- water solutions at different experiments the gas phase hold-up (less than 2.5%) and bubble size distributions at different gas phase superficial velocity were measured. These measurements were through taking and analyzing photographs from the bubble column interiors. Using the data obtained for both system in this work, Hikita correlation was modified.