The suitability of ultrafine coal as an industrial boiler fuel

Journal Article · Sat Jul 01 00:00:00 EDT 1989 · Combust. Flame; (United States)

DOI:https://doi.org/10.1016/0010-2180(89)90104-1· OSTI ID:5751511

Barratt, D J; Roberts, P T

Coal that was finely ground to a mean particle size of 12 /mu/m produced a hotter, shorter flame compared to normal pulverized fuel in a pilot scale combustor. Measurements indicated that, should this fuel be fired in an industrial boiler, the rate of ash deposition on the walls and convection tubes could be low, but that the thin ash deposits that were produced might be more highly insulating and would therefore require more frequent cleaning. A mathematical model, using reactivity and pyrolysis data measured in laboratory-scale apparatus, has been used to predict the heat release rate within a boiler. This would be sufficiently high to allow a premium-quality finely ground coal to be burned in many boilers originally designed for oil firing, provided that burner mixing patterns were optimized.

• Research Organization: Shell Research Ltd., Chester (UK)
• OSTI ID: 5751511
• Journal Information: Combust. Flame; (United States), Vol. 77:1
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
42 ENGINEERING
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ASHES
DEPOSITION
COAL
PARTICLE SIZE
PULVERIZED FUELS
COMBUSTION KINETICS
BOILER FUELS
CONVECTION
FLAMES
FLUIDIZED-BED COMBUSTORS
PYROLYSIS
SCALE MODELS
CARBONACEOUS MATERIALS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COMBUSTORS
DECOMPOSITION
ENERGY SOURCES
ENERGY TRANSFER
FOSSIL FUELS
FUELS
HEAT TRANSFER
KINETICS
MASS TRANSFER
MATERIALS
REACTION KINETICS
RESIDUES
SIZE
STRUCTURAL MODELS
THERMOCHEMICAL PROCESSES
014000* - Coal
Lignite
& Peat- Combustion
421000 - Engineering- Combustion Systems
400800 - Combustion
Pyrolysis
& High-Temperature Chemistry