孔梯度陶瓷纤维复合膜管的制备及特性(英文)  

Preparation and Characterization of Filtering Tube of Ceramic Composite with Pore-gradient Structure

作　　者：王耀明[1] 薛友祥[2] 孟宪谦[2] 张联盟[1] 

机构地区：[1]武汉理工大学材料学院,武汉430070 [2]山东工业陶瓷研究设计院,淄博255031

出　　处：《人工晶体学报》2007年第5期1079-1084,共6页Journal of Synthetic Crystals

摘　　要：陶瓷过滤管具有孔隙率高、耐腐蚀、耐高温、机械强度高、便于清洗、使用寿命长等优点,是高温烟尘处理用的高效过滤元件。本文研制了一种具有梯度孔结构堇青石陶瓷纤维复合膜过滤元件,该过滤元件是由多孔支撑体、过渡层和分离膜层组成。其中支撑体、过渡层和分离层的气孔率分别为35 ～40%、50 ～60%和60 ～70%。文中主要分析了孔梯度陶瓷纤维复合膜管的材料结构和抗热震性能,同时对复合膜管进行含尘气体过滤的冷态模拟试验。对于烟气中粒径大于或等于0 .1μm的颗粒,复合膜管的截留率达到99.8%以上。Ceramic filters have a great potential for applications in high temperature dust collection due to their high erosion resistance and mechanical strength at elevated temperatures. In this work, a filtering tube of cordierite ceramic composite with pore-gradient structure was fabricated and studied, which is made up of a porous cordierite ceramic support, a transition layer and a separation layer of fiber-reinforced composite, having a porosity of 35%-40%, 50%-60% and 60%-70%, respectively. The thermal shock resistance test against the temperature difference of ca. 1000℃ and room temperature simulation on dust gas filtration were mainly carried out. The results show that the total filtration efficiency of the dust particulates larger than 0 . 1 tun is 98.5% and maximum value reaches to 99.9%.

关 键 词：过滤管 孔梯度陶瓷 纤维复合膜 抗热震性 烟尘过滤模拟试验 

分 类 号：TQ174[化学工程—陶瓷工业]