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%.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2007年第5期1079-1084,共6页
Journal of Synthetic Crystals
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
filtering tube
porous cordierite ceramics
fiber-reinforced composite membrane
thermal shock resistance
simulation test on dust gas filtration
