Slagging and fouling in pulverized-coal-fired utility boilers: Volume 2, A survey of boiler design practices for avoiding slagging and fouling: Final report

Technical Report · Tue Dec 01 04:00:00 EST 1987

OSTI ID:5574412

Barrett, R E

A survey was conducted of four utility boiler manufacturers to obtain nonproprietary information regarding criteria that they use for designing boilers to avoid slagging and fouling. A portion of the survey identified boiler design features that are influenced by coal properties. Survey results were used to identify (1) the boiler features that manufacturers consider important when designing to avoid slagging and fouling, and (2) the coal parameters that are used in determining values for the critical boiler design features. Another part of the survey was used to obtain design information for a series of 500-MW boilers intended to fire each of six coals with varying slagging and fouling tendencies. The results were compared to identify how each manufacturer alters boiler designs to compensate for firing coals with greater slagging and fouling tendencies. It was found that each boiler manufacturer judges a different one of the six coals to present more serious deposit problems. The results suggest that each manufacturer uses different coal criteria for designing boilers. A surprising result was that some of the design furnace exit gas temperatures (which were frequently cited as important design criteria) exceed the ash fusion temperatures of several of the coals; a situation presenting a potential for deposits to form on the first few rows of convection tubes. 17 refs., 35 figs., 13 tabs.

• Research Organization: Battelle Columbus Div., OH (USA)
• OSTI ID: 5574412
• Report Number(s): EPRI-CS-5523-Vol.2; ON: TI88920132
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600* -- Coal
Lignite
& Peat-- Properties & Composition
014000 -- Coal
Lignite
& Peat-- Combustion
20 FOSSIL-FUELED POWER PLANTS
200104 -- Fossil-Fueled Power Plants-- Components
ALKALI METALS
ASH CONTENT
ASHES
BITUMINOUS COAL
BLACK COAL
BOILERS
BROWN COAL
CARBONACEOUS MATERIALS
CHEMICAL COMPOSITION
CHEMICAL PROPERTIES
COAL
COMPARATIVE EVALUATIONS
COMPILED DATA
DATA
DATA ANALYSIS
DEPOSITS
DESIGN
ELECTRIC UTILITIES
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FOSSIL-FUEL POWER PLANTS
FOULING
FUELS
INFORMATION
LIGNITE
MANUFACTURERS
MATERIALS
MELTING
METALS
NONMETALS
NUMERICAL DATA
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
POWER PLANTS
PUBLIC UTILITIES
RECOMMENDATIONS
RESIDUES
SLAGS
SODIUM
SUBBITUMINOUS COAL
SULFUR
SURVEYS
THERMAL POWER PLANTS