高校化学工程学报2012，Vol.26Issue(4)：593-598,6.
声强对板式陶瓷膜微滤超细TiO2悬浆液过程的影响
Effect of Acoustic Intensity on Plate Ceramic Membrane Microfiltration of Fine TiO2 Suspension
摘要
Abstract
Distribution of acoustic intensity in ultrasonic generator was measured by ultrasonic power measuring meter. In order to optimize the location of membrane module in ultrasonic generator, effect of acoustic intensity on cross-flow microfiltration of fine TiO2 suspension with plate ceramic membrane was investigated. The results show that the distribution of acoustic intensity in three-dimensional space of ultrasonic generator is non-uniform, and acoustic intensity influences membrane microfiltration process significantly. The acoustic intensity is positively correlated with the mass change rate of cake layer R and the ultrasonic enhancement factor E. When the average acoustic intensity on membrane surface is about 0.5 W-cm , R is higher than 0.23 and E is about 1.2, and when the average acoustic intensity on membrane surface is about 0.6 Wcm"2, R is bigger than 0.4, and E is about 1.3. The optimized location found for ultrasonic-enhanced membrane microfiltration module is as follows: the ultrasonic irradiation direction is the same as the direction of permeation flux; membrane module is placed on top of the transducer and in the near field of the ultrasonic field.关键词
声强分布/微滤/板式陶瓷膜/TiO2/强化Key words
acoustic intensity distribution/ microfiltration/ plate ceramic membrane/ TiO2/ enhancement分类
化学化工引用本文复制引用
熊伟,崔鹏,印美娟,王凤来,陈亚中..声强对板式陶瓷膜微滤超细TiO2悬浆液过程的影响[J].高校化学工程学报,2012,26(4):593-598,6.基金项目
国家自然科学基金(20876030) （20876030）
科技部国际合作项目(2010-05-28). （2010-05-28）
