High-temperature high-pressure gas cleanup with ceramic bag filters. Draft final report
Advanced processes designed for the efficient use of coal in the production of energy will benefit from, or even depend upon, highly efficient, economical, high-temperature removal systems for fine particulates. In the case of pressurized fluidized-bed combustion (PFBC), the hot gas cleanup device must operate at approximately 1600/sup 0/F. Existing commercial filter systems are temperature limited due to the filter material, but ceramic fibers intended for refractory insulation offer the promise of a practical high-temperature filter media if they can be incorporated into a design which combines filter performance with acceptable durability. The current work was initiated to further develop and demonstrate on a larger-scale basis, a ceramic fiber filtration system for application to coal-fired PFBC's. The development effort centered around the need to replace the knit metal wire scrim, used in earlier designs as support for the fine fiber ceramic mat filtration medium, with a corrosion-resistant material. This led to the selection of woven ceramic cloth for support of the mat layer. Because of the substantial difference in strength and other material properties between the metal and ceramic cloth, tests were necessary to optimize the filter; pulse parameters such as pulse duration, pulse pressure, and pulse injection orifice size; woven cloth mesh configuration; the technique for clamping the bag to the support; and similar structural, fluid, and control parameters. The demonstration effort included both tests to prove this concept in a real application and a systems analysis to show commercial feasibility of the ceramic filtration approach for hot gas cleanup in PFBC's. 12 references, 57 figures, 23 tables.
- Research Organization:
- Acurex Corp., Mountain View, CA (USA). Energy and Environmental Div.
- DOE Contract Number:
- AC21-80ET17092
- OSTI ID:
- 5288490
- Report Number(s):
- DOE/ET/17092-1504; ON: DE84003081
- Resource Relation:
- Other Information: Portions are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COAL
FLUIDIZED-BED COMBUSTION
FABRIC FILTERS
PERFORMANCE TESTING
HOT GAS CLEANUP
AIR POLLUTION CONTROL
BAGHOUSES
DESIGN
DUST COLLECTORS
EFFICIENCY
EXPERIMENTAL DATA
FEASIBILITY STUDIES
OPERATION
PARTICULATES
POLLUTION CONTROL EQUIPMENT
REMOVAL
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COMBUSTION
CONTROL
DATA
ENERGY SOURCES
EQUIPMENT
FILTERS
FOSSIL FUELS
FUELS
INFORMATION
MATERIALS
NUMERICAL DATA
OXIDATION
PARTICLES
POLLUTION CONTROL
PURIFICATION
TESTING
THERMOCHEMICAL PROCESSES
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