快速流态化两通道模型  

The Two-channel Model for Fast Fluidization

作　　者：白丁荣[1] 金涌[1] 俞芷青[1] 姚文虎[1] 

机构地区：[1]清华大学化学工程系

出　　处：《化工学报》1990年第1期10-18,共9页CIESC Journal

基　　金：国家自然科学基金

摘　　要：本文根据实验观测及文献资料,提出了一个快速流态化气固两通道流动模型.该模型综合考虑了固体颗粒在床内的轴、径向密度分布和颗粒的内循环流动,具有物理意义明确、模型参数少等优点.通过对文献及本实验的多组轴向空隙率分布数据的验算,获得了模型参数的经验关联式.计算表明,该模型可以较好地描述快速流化床内气固运动及颗粒密度分布的规律.A new model of gas solid flow pattern for fast fluidization has been developed based on laboratory investigation and related literature. With regard to the axial and radial distributions of solid density and the internal particle circulation, this new mathematical model for fast fluidization is superior in clear physical concept and fewer parameters. All the model parameters are correlated by using experimental results from different investigators. These empirical correlations may be used in predicting the voidage distribution for fast fluidization as well as in interpreting the dynamics of the solid particles.

关 键 词：快束流态化 气固流动 两通道模型 

分 类 号：TQ026.7[化学工程]