Formation of Bubble Bunch in a Low Interfacial Tension Gas-Liquid System: A Phenomenological Study
While studying the operation of a bubble column, it was observed that under some circumstances tiny bubbles attach to bubbles with bigger size without coalescing to them. In other words, bubbles with large diameters (d>5mm) swept tiny bubbles (d<1mm) in their way to the top of the column and form grapes of bubble.We named this phenomenon bubble bunch and discussed the effect of it on total gas hold-up and interfacial area. It was found that although it has almost no affect on gas hold-up, it can increase the interfacial area up to 10% more than what is anticipated by correlations in the literature. The process of film thinning was modelled for this phenomenon and critical film thickness was calculated as a function of interfacial tension.
bubble bunch bubble coalescence interfacial tension bubble columns interfacial area.
Ali Baghaei Dariush Bastani
Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
国际会议
The 12th Asian Pacific Confederation of Chemical Engineering Congress(第十二届亚太化工联盟大会暨化工展览会)
大连
英文
2008-08-04（万方平台首次上网日期，不代表论文的发表时间）