SIMULATION OF FLUIDIZED BED WITH TOP LIQUID SPRAYING  

顶喷流态化过程模拟(英文)

作　　者：王春艳[1] 马国平[1] 许锡恩[1] 

机构地区：[1]天津大学化工学院

出　　处：《Transactions of Tianjin University》1999年第2期83-87,共5页天津大学学报（英文版）

摘　　要：Simulation of the drying process in a top spraying fluidized bed is conducted.A wetting coefficient describing the wetted part of the particle surface is introduced.Using experimental data and the data regression method,the modified function of the wetting coefficient is calculated.And this function is introduced to the mathematical model,which describes the heat and mass transfer process in a liquid sprayed gas fluidized bed.Through modeling,the gas humidity and temperature profiles as well as the particle temperature profile can be obtained.Compared with the experimental results,the wetting coefficient and the mathematical model are verified.对顶喷流化床中的颗粒干燥过程进行模拟.引进润湿率参数表示喷雾液滴对流化颗粒的有限润湿,并利用聚丙烯和水物系的实验数据回归得到了该物系的润湿率表达式.通过得到的润湿率对顶喷流态化过程进行模拟,模拟结果与实验结果基本一致,润湿率及过程模型得到了验证.

关 键 词：fluidized bed with top  spraying wetting coefficient particle coating 

分 类 号：TQ051.13[化学工程]