内置竖隔板流化床颗粒停留时间分布  

Experiment Study of Partical Residence Time Distribution in Fluidized Bed with Vertical Partition Plate

作　　者：彭迎彬 李海广[1] 龚志军[1] 武文斐[1] 

机构地区：[1]内蒙古科技大学,内蒙古自治区白云鄂博矿多金属资源综合利用省部共建国家重点实验室培养基地,内蒙古包头014010

出　　处：《钢铁钒钛》2015年第4期140-144,共5页Iron Steel Vanadium Titanium

基　　金：内蒙古应用技术研究与开发资金计划(编号:20130310);内蒙古高校创新团队研究计划(编号:NMGIRT1406);白云鄂博矿多金属资源综合利用国家重点实验室资助项目(编号:BO-13-006)

摘　　要：依据流化床内褐铁矿粉实际磁化焙烧情况,采用床内设置竖直隔板,改进颗粒在流化床反应器的流化情况,减少单床的死区和短路,颗粒的停留时间分布(RTD)更加均匀。针对内含竖直隔板流化床的颗粒RTD的研究,采用脉冲法系统地考察了表观气速、进料速率、粒径等操作因素对RTD的影响。研究结果表明,表观气速和进料速率的增大,RTD分布更加集中,而随粒径增大,RTD分布分散。试验数据可为此类床型用于磁化流化焙烧提供有益参考。According to magnetization reduction roasting of limonite in a fluidized bed,a vertical partition plate is installed in fluidized bed to improve particle behavior,reduce dead region and short circuit condition and average RTD. In this paper the impact of superficial gas velocity,feed rate,particle size on particle RTD in fluidized bed with vertical partition plate have been investigated by pulse method. Results showed that with increasing superficial gas velocity and feed rate,RTD concentrated,while increasing particle size led to a scattered RTD. Experiment data can provide beneficial references to this type of fluidized bed in reduction of limonite.

关 键 词：褐铁矿 磁化焙烧 流化床 停留时间 表观气速 进料速率 粒径 

分 类 号：TF046[冶金工程—冶金物理化学]