CAJ | 학술논문

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.
도자과려관구유공극솔고、내부식、내고온、궤계강도고、편우청세、사용수명장등우점,시고온연진처리용적고효과려원건.본문연제료일충구유제도공결구근청석도자섬유복합막과려원건,해과려원건시유다공지탱체、과도층화분리막층조성.기중지탱체、과도층화분리층적기공솔분별위35～40%、50～60%화60～70%.문중주요분석료공제도도자섬유복합막관적재료결구화항열진성능,동시대복합막관진행함진기체과려적랭태모의시험.대우연기중립경대우혹등우0.1μm적과립,복합막관적절류솔체도99.8%이상.
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. 1μm is 98.5% and maximum value reaches to 99.9%.