喷动床反应器气固流动模型的研究进展  

Review of Models on Gas-Solid Flow Patterns in Spouted Bed Reactor

作　　者：李水清[1] 姚强[1] 赵香龙[1] 

机构地区：[1]清华大学热能工程系煤的清洁燃烧技术国家重点实验室,北京100084

出　　处：《化学反应工程与工艺》2003年第3期264-279,共16页Chemical Reaction Engineering and Technology

基　　金：国家重点基础研究发展规划项目资助(2002CB211600);中国博士后科学资金资助(2003)。

摘　　要：　首先对喷动床流动特征参数关联式进行了扼要介绍,继而着重总结了近年来喷动床内气固流动模型(喷射区气固稀相流模式、环隙区气体渗流模式以及固体颗粒流模式)、以及喷动床放大规律等基础理论研究的进展。最后,提出了未来喷动床流动模型工作的突破点和相应思路。Spouted bed is an attracting gassolid contactor (dryer, catalytic or noncatalytic pyroreactors) for handling the coarse Geldart D particles, which superimposes the features of dilutephase fluidized beds and densephase moving beds. A brief description of hydrodynamic parameters of spouted beds is firstly introduced. The models on flow patterns in spouted bed, including gas model in annulus on basis of a force balance, solid flow model in annulus on basis of granular flow kinetics, and the mass and momentum balance of gassolid in spout on basis of twofluid model, were reviewed in detail. The solutions of each submodel as well as their coupling were also discussed. In addition, the scaleup studies of spouted beds were discussed. Finally, the further research ideas are proposed as conclusions, that's, both the theory of turbulence and theory of quasistatic flow of granular materials should be paid more attention in the futural work of spouted bed modeling.

关 键 词：喷动床 反应器 气固流动模型 研究进展 稀相流动 颗粒流 放大理论 渗流 

分 类 号：TQ051.15[化学工程]