陶瓷过滤器滤管脉冲反吹过程的流动特性  

Characteristics of Instantaneous Flow Outside Filter Tube of Ceramic Filter During Pulse Backfluch

作　　者：姬忠礼[1] 孟祥波[1] 时铭显[1] 

机构地区：[1]石油大学机电工程系,北京100083

出　　处：《过滤与分离》2001年第2期1-4,共4页Journal of Filtration & Separation

基　　金：国家自然科学基金资助项目 !(No.596760 4 5)

摘　　要：在由三根陶瓷滤管组成的实验装置上 ,利用热线风速仪对脉冲反吹时滤管外瞬态流场进行了测定 ,分析了喷吹压力、脉冲宽度、过滤气速和喷吹距离对滤管外流场的影响。随着离开滤管距离的增加 ,喷吹速度和回流速度逐渐减小。结果表明 。On a new experimental set up of filter with three ceramic filter elements,the transient velocity outside the filter element is measured by hot wire anemometer during pulse jet cleaning process.The effect of reservoir pressure,pulse duration,filter face velocity and nozzle injector gap on the velocity pulse was investigated.The experimental results show that there exists a remarkable back flow between the pulse jet cleaning and normal filtration process.It is the back flow that makes fine particles released redeposit on the filter element surface and even penetrates the filter element wall.Therefore,it has serous influence on the long term stable operation of industrial ceramic filters.

关 键 词：陶瓷过滤器 脉冲反吹 瞬态流场 回流 

分 类 号：TQ051.85[化学工程] TQ021.1