Development of advanced hot gas ceramic filter systems
Conference
·
OSTI ID:20006794
Reliable, maintainable and cost effective hot gas filter technology is critical to the successful commercialization of advanced, coal-fired power generation technologies. The operating reliability of currently developing and commercial hot gas ceramic filter systems have been periodically compromised by (1) process upsets and process equipment failures, and (2) flyash behavior resulting in ash bridging between neighboring filter elements, or poor ash drainage from the vessel. Termination of plant operation is generally required following such incidents, and damage to ceramic filter elements frequently results. Two advanced hot gas ceramic filter concepts have been conceived to minimize the possibility of ash bridge formation and to be robust against ash bridges and process upsets, should they occur. The inverted candle filter system uses arrays of thin-walled, ceramic candle-type filter elements with inside-surfacing filtering, and contains the filter elements in metal enclosures for complete separation from potential ash bridges. The sheet filter system uses ceramic, flat-plate filter elements supported on vertical pipe-header arrays that provide geometry that avoids the potential buildup of ash bridges and allows free fall of the back-pulse released filter cake. Conceptual designs of these two advanced hot gas ceramic filter systems have been prepared to assess their performance, availability and cost potential, and to identify technical issues that may hinder their commercialization. The two advanced, hot gas ceramic filter systems are expected to have the potential to be significantly more reliable and less expensive to operate in PFBC and IGCC applications than current hot gas ceramic filter systems.
- Research Organization:
- Siemens Westinghouse Power Corp., Pittsburgh, PA (US)
- Sponsoring Organization:
- US Department of Energy
- DOE Contract Number:
- AC26-97FT33007
- OSTI ID:
- 20006794
- Report Number(s):
- CONF-990534--
- Country of Publication:
- United States
- Language:
- English
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