Slagging and fouling by coal-oil mixture in a utility boiler. Final report
A two-day steady state firing test was conducted in New England Power Company's Salem Harbor No. 1 boiler with each of the following fuels: (a) No. 6 oil containing 0.05 wt% of a magnesium antifouling additive, (b) coal-oil mixture (COM) containing 32 wt% coal, 68 wt% No. 6 oil with magnesium additive, and (c) COM without additive. The objective of the project was to characterize the nature and degree of fouling/slagging which could be caused by combination of the ash from coal and oil. For this task, two controlled temperature waterwall probes and a superheater probe were installed in boiler viewports to collect ash/slag deposits typical of each of the three test fuels. Skin metal temperatures were taken at three locations on each probe and recorded during each test. Samples of coal, oil, COM, and fly ash (from the economizer outlet) were collected and analyzed. Color movies and still pictures were taken of the flame patterns from each test to characterize fuel atomization and burning behavior in the boiler. Ash deposits were removed from each probe after the test and subjected to x-ray fluorescence analysis to determine elemental composition. X-ray diffraction scans were run to identify the chemical compounds. The fly ash samples collected from the economizer outlet were subjected to detailed wet chemical analysis, fusibility measurements, x-ray fluorescence, and x-ray diffraction analysis. Based on the results of furnace observations and sample analysis, conclusions were drawn relative to the characterization of ash deposits and their effect on furnace performance.
- Research Organization:
- Combustion Engineering, Inc., Windsor, CT (USA)
- DOE Contract Number:
- AC22-76ET10380
- OSTI ID:
- 6588272
- Report Number(s):
- EPRI-CS-2787; ON: DE83005731
- Resource Relation:
- Other Information: Portions are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
02 PETROLEUM
ASHES
CHEMICAL ANALYSIS
FUEL ADDITIVES
BOILERS
FOULING
COAL
COMBUSTION
FOSSIL-FUEL POWER PLANTS
FUEL OILS
FUEL SLURRIES
BOILER FUELS
COMBUSTION PRODUCTS
DEPOSITS
EXPERIMENTAL DATA
MAGNESIUM
ADDITIVES
ALKALINE EARTH METALS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
DATA
DISPERSIONS
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
INFORMATION
LIQUID FUELS
MATERIALS
METALS
MIXTURES
NUMERICAL DATA
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDATION
PETROLEUM PRODUCTS
POWER PLANTS
RESIDUES
SLURRIES
SUSPENSIONS
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
200104* - Fossil-Fueled Power Plants- Components
014000 - Coal
Lignite
& Peat- Combustion
025000 - Petroleum- Combustion