可压缩性颗粒层过滤实验研究  

EXPERIMENTAL STUDY ON FILTRATION OF COMPACTIBLE CAKE

作　　者：黄斌[1] 徐海卫[1] 姚强[1] 

机构地区：[1]热能动力工程与热科学重点实验室,清华大学热能工程系北京100084

出　　处：《工程热物理学报》2005年第5期891-893,共3页Journal of Engineering Thermophysics

基　　金：国家"973"计划资助项目(No.2002CB211600)

摘　　要：通常人们采用不可压缩模型描述纤维表面过滤压降变化。本实验考虑了颗粒的可压缩性,实验研究了不同过滤速度和是否有静电除尘器(ESP)预处理颗粒层压降变化规律。我们的研究显示,未有ESP预处理的颗粒层在某个压力以上出现频繁的“压降跳跃”,ESP预处理的结果呈周期上升。The difference of pressure-drop whether the particles were precharged or not for the membraned fibre filter was compared experimentally. Our study shows that for non-precharged particles the pressure-drop of the particle cake has a linear rise firstly, there are some suddenly several-hundredPa-jumps happen when it is greater than some value, and for precharged particles, the increasing rate has a periodic alternation. It is concluded that the precharging of the particles changed the structure of the cake.

关 键 词：除尘 颗粒物 压降 颗粒链 

分 类 号：X701.2[环境科学与工程—环境工程]