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    • 3. 发明授权
    • Ceramic fiber reinforced filter
    • 陶瓷纤维增强过滤器
    • US5075160A
    • 1991-12-24
    • US206459
    • 1988-06-13
    • David P. StintonJerry C. McLaughlinRichard A. Lowden
    • David P. StintonJerry C. McLaughlinRichard A. Lowden
    • B01D39/20C04B41/45C04B41/52D04H1/42
    • C04B41/009B01D39/2017C04B41/4584C04B41/52D04H1/4209C04B2111/00793Y10T428/2918Y10T428/2933Y10T428/2942Y10T428/2944Y10T428/2958Y10T428/30Y10T442/3537Y10T442/3707
    • A filter for removing particulate matter from high temperature flowing fluids, and in particular gases, that is reinforced with ceramic fibers. The filter has a ceramic base fiber material in the form of a fabric, felt, paper of the like, with the refractory fibers thereof coated with a thin layer of a protective and bonding refractory applied by chemical vapor deposition techniques. This coating causes each fiber to be physically joined to adjoining fibers so as to prevent movement of the fibers during use and to increase the strength and toughness of the composite filter. Further, the coating can be selected to minimize any reactions between the constituents of the fluids and the fibers. A description is given of the formation of a composite filter using a felt preform of commercial silicon carbide fibers together with the coating of these fibers with pure silicon carbide. Filter efficiency approaching 100% has been demonstrated with these filters. The fiber base material is alternately made from aluminosilicate fibers, zirconia fibers and alumina fibers. Coating with Al.sub.2 O.sub.3 is also described. Advanced configurations for the composite filter are suggested.
    • 用于从高温流动流体中除去颗粒物质的过滤器,特别是用陶瓷纤维增强的气体。 该过滤器具有织物,毛毡,类似纸的形式的陶瓷基础纤维材料,其耐火纤维涂覆有通过化学气相沉积技术施加的保护性和粘结耐火材料的薄层。 该涂层使得每个纤维物理连接到邻接的纤维上,以防止在使用过程中纤维的运动并增加复合过滤器的强度和韧性。 此外,可以选择涂层以使流体和纤维的组分之间的任何反应最小化。 给出了使用商业碳化硅纤维的毡预制件以及这些纤维与纯碳化硅的涂层一起形成复合过滤器的描述。 这些过滤器已经证明过滤器效率接近100%。 纤维基材交替地由铝硅酸盐纤维,氧化锆纤维和氧化铝纤维制成。 还描述了用Al 2 O 3的涂层。 建议使用复合过滤器的高级配置。