Chapter 6. Low Pressure Injection Molding Process for Near–Net Shape, Hot Gas Filter Components

  1. Hau-Tay Lin and
  2. Mrityunjay Singh
  1. Rama Nageswaran1 and
  2. F. A. Bruce2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294758.ch6

26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 23, Issue 4

26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 23, Issue 4

How to Cite

Nageswaran, R. and Bruce, F. A. (2002) Low Pressure Injection Molding Process for Near–Net Shape, Hot Gas Filter Components, in 26th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: B: Ceramic Engineering and Science Proceedings, Volume 23, Issue 4 (eds H.-T. Lin and M. Singh), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294758.ch6

Author Information

  1. 1

    COI Ceramics, Inc. 181 W. 1700 South Salt Lake City, UT 84115

  2. 2

    COI Ceramics, Inc. 181 W. 1700 South, Salt Lake City, UT 84115

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2002

ISBN Information

Print ISBN: 9780470375792

Online ISBN: 9780470294758

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Keywords:

  • pressurized fluidized bed combustion;
  • hot gas filter components;
  • power generation systems;
  • integrated gas combined cycle;
  • candle filter system

Summary

Advanced, coal-fueled, power generation systems require low cost, high efficiency, and durable hot-gas filtration systems. The requirement of a high surface area-to-volume ratio filter implies non-trivial shapes. Conventional filters are based on a candle design and more recent innovations involve a cross-flow design. COIC has been developing low pressure injection molding (LPIM) for low cost production of complex-shaped ceramic filters and other advanced ceramic components. Through a DOE–funded Phase II STTR, COIC has developed the LPIM technology for the fabrication of high-purity mullite based candles, 30″ long, and roughly 4″ × 4″ × 8″ cross flow filters. Highlights of this study are presented here.