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Fabric filter testing at the TVA Atmospheric Fluidized-bed Combustion (AFBC) Pilot Plant

Technical Report ·
OSTI ID:5040762
; ;
Experience with fluidized bed combustion (FBC) units on a research and industrial scale has indicated that FBC power plants could be a viable alternative to pulverized-coal power plants with wet limestone scrubbers or spray dryers. To provide design confidence and the flexibility to evaluate process improvements, the Tennessee Valley Authority constructed a 20-MW(e) AFBC (bubbling bed) Pilot Plant. Subseqently, EPRI and Southern Research Institute entered into a program to monitor the performance of the fabric filter at the pilot plant. The objective of the program was to determine if unique characteristics of AFBC operation or emissions would require special design criteria or operating procedures in the application of fabric filtration to utility-size AFBC boilers. With reverse-gas cleaning the fabric filter experienced high tubesheet pressure drop while operating at low filtering air-to-cloth values and with low residual dustcake areal densities compared to fabric filters downstream from pulverized-coal boilers. This implied that the AFBC fly ash had properties distinct from those of pulverized-coal fly ash. Implementaion of reverse-gas cleaning with sonic assistance resulted in lower operating pressure drops at higher filtering air-to-cloth values, although slightly higher than comparable data from baghouses filtering pulverized-coal fly ash. Fly ash analyses showed that the AFBC ash particles are generally smaller, more irregualr in shape, and the dustcakes are lighter and more porous than those formed from pulverized-coal fly ashes. 8 refs., 18 figs., 7 tabs.
Research Organization:
Electric Power Research Inst., Palo Alto, CA (USA); Southern Research Inst., Birmingham, AL (USA)
OSTI ID:
5040762
Report Number(s):
EPRI-CS-5837; ON: TI88011431
Country of Publication:
United States
Language:
English

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Related Subjects

01 COAL, LIGNITE, AND PEAT
010800 -- Coal
Lignite
& Peat-- Waste Management
014000* -- Coal
Lignite
& Peat-- Combustion
20 FOSSIL-FUELED POWER PLANTS
200202 -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
42 ENGINEERING
424000 -- Engineering-- Pollution Control Equipment-- (1980-1989)
AEROSOL WASTES
AIR POLLUTION CONTROL
ASHES
ATMOSPHERIC PRESSURE
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMBUSTION
CONTROL
DATA
DOCUMENT TYPES
ENERGY SOURCES
EXPERIMENTAL DATA
FABRIC FILTERS
FILTERS
FLUIDIZED-BED COMBUSTION
FLY ASH
FOSSIL FUELS
FOSSIL-FUEL POWER PLANTS
FUELS
FUNCTIONAL MODELS
INFORMATION
MATERIALS
NATIONAL ORGANIZATIONS
NUMERICAL DATA
OXIDATION
PARTICLES
PARTICULATES
PERFORMANCE TESTING
PILOT PLANTS
POLLUTION CONTROL
POWER PLANTS
PROGRESS REPORT
PULVERIZED FUELS
REMOVAL
RESIDUES
TENNESSEE VALLEY AUTHORITY
TESTING
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
US ORGANIZATIONS
WASTES