Western coal combustion improvement in converted steam generator

Conference · Sat Jan 01 04:00:00 EST 1983 · Proc. Am. Power Conf.; (United States)

OSTI ID:6544338

Higazy, M A; Kenning, T A

This paper discusses the modification of the boilers of a fossil-fuel power plant in order to improve the burning of Decker coal. Decker coal is a low-rank subbituminous Western coal with high moisture, high sodium, low heating value, low grindability index, lignitic ash, low ash fusion temperatures, high slagging and fouling potential, and high ash sintering strength. Topics considered include unit operating problems, the combustion process, burner modifications, and verification testing (normal unit load-coal firing, maximum unit load-coal firing, and maximum load-coal and oil firing). The results of the performance testing indicate the following: a significant reduction in furnace exit gas temperature; reduced superheat attemperation flow; an increase in coal mill capacity from 29 MW/mill to 32.4 MW/mill; maximum demonstrated unit load with coal firing has been increased from 145 MW gross to 162 MW gross; maximum unit rating is achievable at a significantly lower oil firing rate; and burners are available for a possible additional pulverizer without any boiler wall or windbox changes.

• Research Organization: The Detroit Edison Co.
• OSTI ID: 6544338
• Report Number(s): CONF-830446-
• Conference Information: Journal Name: Proc. Am. Power Conf.; (United States) Journal Volume: 45
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000 -- Coal
Lignite
& Peat-- Combustion
20 FOSSIL-FUELED POWER PLANTS
200104 -- Fossil-Fueled Power Plants-- Components
42 ENGINEERING
421000* -- Engineering-- Combustion Systems
ALKALI METALS
ASHES
BITUMINOUS COAL
BLACK COAL
BOILERS
BROWN COAL
BURNERS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMBUSTION
COMMINUTION
ELEMENTS
ENERGY SOURCES
FABRICATION
FOSSIL FUELS
FOSSIL-FUEL POWER PLANTS
FOULING
FUEL OILS
FUELS
GRINDING
HEATING
LIGNITE
LIQUID FUELS
MACHINING
MATERIALS
METALS
MOISTURE
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDATION
PERFORMANCE TESTING
PETROLEUM PRODUCTS
POWER PLANTS
PULVERIZERS
RESIDUES
RETROFITTING
SCALING
SINTERING
SLAGS
SODIUM
STEAM GENERATORS
SUPERHEATING
TEMPERATURE DEPENDENCE
TESTING
THERMAL POWER PLANTS
THERMOCHEMICAL PROCESSES
VAPOR GENERATORS