液液两相混合中液滴的凝并频率  

SOLUTION OF COALESCENCE FREQUENCY IN LIQUID-LIQUID MIXING

作　　者：王浩然[1] 王立业[2] 杨传芳[1] 刘会洲[1] 

机构地区：[1]中国科学院化工冶金研究所生化工程国家重点实验室分离科学与工程青年实验室,北京100080 [2]大连理工大学化工学院,辽宁大连116012

出　　处：《化工学报》2001年第5期446-450,共5页CIESC Journal

基　　金：国家自然科学基金重点资助项目 !(No.5 993 4 0 80 )&&

摘　　要：液液两相混合中液滴的凝并频率的直接观察和建模都存在一些困难 .由此建立了一种喷雾 -搅拌两相混合器 ,获取液滴分布的即时值 .因为液滴很小时破裂频率可以忽略 ,影响液滴分布的只有凝并频率 ,可以从液滴的分布获得液滴的凝并频率 .验证了液滴的自我维持性质并利用反问题的方法求取液滴的凝并频率 ,与从理论推导的液滴凝并频率比较 。When two liquid phases are mixed, it is important to know the variation of drops distribution for the research of mass transfer. Recently, the method mostly used is to set up a population balance model. But in the model, it is difficult to get the coalescence frequency not only from direct observation but also from mechanism modeling.Therefore, a spray-stirred mixer is set up to obtain instantaneous drops distribution. And the breakage frequency can be ignored when liquid drops is very small.There is only coalescence frequency that can affect drops distribution, which can be obtained from the instantaneous drops distribution. In this paper,the drops self-similarity is tested and drops coalescence frequency can be obtained by the inverse-problem method. Compared with the coalescence frequency deduced from theory, this method can give more exacted drops distribution.

关 键 词：液滴凝并 凝并频率 液液两相混合 液液两相反应 喷雾-搅拌两相混合器 

分 类 号：TQ051.7[化学工程] TQ03