Ceramic Filters for Use at High Temperature PUBLIC ACCESS

[+] Author Affiliations
Lloyd R. White

3M Company, St. Paul, MN

Paper No. 91-GT-188, pp. V003T05A004; 4 pages
  • ASME 1991 International Gas Turbine and Aeroengine Congress and Exposition
  • Volume 3: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations
  • Orlando, Florida, USA, June 3–6, 1991
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7900-9
  • Copyright © 1991 by ASME


A new hot gas filter for removal of particulates upstream of gas turbines is described and compared with a device called a candle. Candle filters are made in the shape of a large test tube from ceramic materials bonded with a glassy phase. The filtering membrane is fairly thick making candles relatively heavy. A thinner filter would be easier to support, more tolerant of thermal shock, and would offer less resistance to flow. A filter of a ceramic/ceramic composite may achieve these goals and specimens are being fabricated by depositing a ceramic material on a ceramic fiber preform by chemical vapor infiltration. The ceramic matrix is silicon carbide and the ceramic fiber reinforcement is alumina-boria-silica. Progress toward filter development is described.

Copyright © 1991 by ASME
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