液-固流态化固体颗粒终端速度v_t研究  

Study on the Terminal Velocity v_t in a Liquid-solid Fluidization System

作　　者：张卫义[1] 方陈靖 陈罕[1] 

机构地区：[1]北京石油化工学院机械工程系,北京102617 [2]渤海石油装备制造有限公司石油机械厂,河北任丘062552

出　　处：《石油化工设备》2011年第2期10-13,共4页Petro-Chemical Equipment

基　　金：北京市优秀人才培养资助项目(20041D0500516)

摘　　要：将21种液-固流化床固体颗粒流态化(球形颗粒和非球形颗粒)终端速度vt的计算方法与郭慕孙实验测得的结果进行比较,认为Kurten和Schiller等人分别给出的两种方法有较高的计算精度,最大偏差分别为3.62%和7.2%,均方差分别为1.47%和1.91%,且这两种方法计算球形颗粒与非球形颗粒的公式有统一的表达形式。认为由Leva提出的工程上常用的计算终端速度的方法不够准确,与实验测得的结果比较的最大误差达到17.6%,均方差为10.1%。After comparing the results from various formulas of 21 kinds of methods for calculating the terminal velocity of particles in a liquid-solid system with experimental data provided by the Guo Musun,the two methods provided by Kurten and Schiller are proposed for having better precision,the biggest error is 3.62% and 7.2%,the square root error is 1.47% and 1.91%.Both methods have the merits that it has unified form of formula for spherial and non-sphirieal particles.In addition,it is pointed out that Leva ＇s method widely used by engineers is not accurate after comparing with the experimental data,the biggest error is 17.6%,the square root error is 10.1%.

关 键 词：固体颗粒 液-固流态化系统 终端速度 特性计算 

分 类 号：TQ359[化学工程]