The slagging and fouling consequences of furnace limestone injection: Final report
The influence of limestone injection on the furnace performance characteristics of two coals was investigated experimentally in Combustion Engineering's pilot scale Fireside Performance Test Facility (FPTF). The slagging, fouling, and emission characteristics of a high sulfur, high iron Illinois No. 6 bituminous coal and a low sulfur, high sodium Montana subbituminous coal were investigated under low NO/sub x/ conditions. Calcium to sulfur ratios of 2 to 4 were investigated in detail. The FPTF results were used as a basis to predict utility boiler performance under low NO/sub x/ firing conditions with furnace limestone injection. Results indicate that limestone can be injected without adversely affecting the slagging and fouling performance of units firing these fuels. For high sodium coals it has significant potential for reducing fouling by weakening the deposit to tube bond, thereby enhancing sootblower cleaning effectiveness. With each coal upper limits for limestone dosage were established based upon either deposit accumulation and/or heat transfer rates.
- Research Organization:
- Combustion Engineering, Inc., Windsor, CT (USA). Kreisinger Development Lab.; Electric Power Research Inst., Palo Alto, CA (USA)
- OSTI ID:
- 6806513
- Report Number(s):
- EPRI-CS-5020; ON: TI87920234
- Country of Publication:
- United States
- Language:
- English
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54 ENVIRONMENTAL SCIENCES
AIR POLLUTION ABATEMENT
BOILERS
CARBONACEOUS MATERIALS
CARBONATE ROCKS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
COAL
COMBUSTION KINETICS
COMBUSTION PRODUCTS
ENERGY SOURCES
FLUE GAS
FOSSIL FUELS
FUELS
FURNACES
GASEOUS WASTES
KINETICS
LIMESTONE
MATERIALS
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
POLLUTION ABATEMENT
REACTION KINETICS
ROCKS
SEDIMENTARY ROCKS
WASTES