Recent developments in granular bed filters
Granular-bed filters in various modes (fixed, fluidized, and moving) have been used for particulate and vapor filtration from gas streams for a long time. In recent years, their exploitation in coal conversion processes for removal of fine dust and traces of metal vapors has been pursued with good success. Exxon, Westinghous, Combustion Power Company, General Electric, EFB, and Air Pollution Technology are engaged in developing such filters for the purification of hot and compressed flue gas from pressurized fluidized-bed combustors for power generation. In each mode of granular-bed filter operation, the particulate collection efficiency improves by the application of an external electric field and even further enhancement is possible if the dust particles are charged. A granular bed consisting of an admixture of magnetic and nomagnetic particles in a magnetic field is found to be a very attractive filter, and its complete promise and potential is under investigation. All these continuing recent efforts are reviewed and examined, and recommendations are made for future research in this particular area of coal combustion technology.
- Research Organization:
- USDOE Morgantown Energy Technology Center, WV
- OSTI ID:
- 5343218
- Report Number(s):
- DOE/METC-82-7; ON: DE82011894
- Resource Relation:
- Other Information: Portions of document are illegible
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COMBINED-CYCLE POWER PLANTS
POLLUTION CONTROL EQUIPMENT
FLUIDIZED-BED COMBUSTORS
HOT GAS CLEANUP
GRANULAR BED FILTERS
OPERATION
PERFORMANCE
AIR POLLUTION CONTROL
COAL
DEMONSTRATION PROGRAMS
DESIGN
ELECTRIC CHARGES
ELECTRIC FIELDS
EXPERIMENTAL DATA
FLUIDIZED-BED COMBUSTION
MAGNETIC FIELDS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COMBUSTION
COMBUSTORS
CONTROL
DATA
ENERGY SOURCES
EQUIPMENT
FILTERS
FOSSIL FUELS
FUELS
INFORMATION
MATERIALS
MECHANICAL FILTERS
NUMERICAL DATA
OXIDATION
POLLUTION CONTROL
POWER PLANTS
PURIFICATION
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
200202* - Fossil-Fueled Power Plants- Waste Management- Noxious Gas & Particulate Emissions
200104 - Fossil-Fueled Power Plants- Components