文献类型：期刊文献

中文题名：搅拌槽中气泡大小分布规律的研究

英文题名：A Study on Bubble Size Distribution in an Aerated Stirred Vessel

作者：张志斌[1];戴干策[1];陈敏恒[1]

机构：[1]联合化学反应工程研究所华东化工学院分所

年份：1989

卷号：40

期号：2

起止页码：183

中文期刊名：化工学报

外文期刊名：CIESC Journal

收录：CSTPCD;;Scopus;北大核心:【北大核心1992】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：搅拌槽;气泡;分布规律

摘要：运用改进后的光电毛细管探头技术测量了搅拌槽中较宽操作条件范围内的气泡大小分布,由湍流理论分析了叶轮区和循环区影响气泡大小的主要因素,得到了气泡大小空间分布的初步规律及不同区域内的气泡平均直径与操作条件之间的定量关系.
Modified photo-electric capillary probe technique with improved sampling accuracy was used to measure bubble size distribution in an aerated stirred vessel. Simulated calculation indicates that the ratio of Sauter mean diameter or standard deviation to maximum diameter can approximately keep constant despite of change in operating conditions. The main factors governing the bubble size in impeller region and in circulation region have been deduced according to turbulence theory. Experimental findings show that the probability density of bubble diameter approaches that of normal distribution in air-water systems. There exists obvious difference in magnitude between bubble diameter in impeller region and that in circulation region. The quantitative relations between the Sauter mean dimeter in different regions and the power per unit volume, superficial gas velocity and the ratio ot impeller diameter to tank diameter have been given.