Modelling fly ash generation for UK power station coals

Conference · Tue Dec 31 04:00:00 EST 1996

OSTI ID:305691

Wigley, F; Williamson, J ^[1]

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1. Imperial Coll., London (United Kingdom). Dept. of Materials

An in-depth characterization has been made of three UK bituminous coals and the combustion products from these coals when burned at a power station and on a range of experimental combustion facilities. The coals were chosen to represent the range of ash compositions and slagging propensities found at UK power stations. CCSEM analysis of the pulverized coals has been performed to provide quantitative data on the size and chemical composition of individual mineral occurrences, and to determine the nature of the mineral-mineral and mineral-organic associations in the pulverized fuel. In a similar way the size and chemical composition of individual fly ash particle has been determined. The mineral-mineral association information has been used to predict the effects of mineral coalescence, the dominant mineral transformation process for UK power station coals. The CCSEM information correctly identifies the types of mineral-mineral association and hence the predicted effects of coalescence. The limitations of the information are inherent in the analysis of a cross-section, but useful information for the modelling of ash generation may still be obtained.

• Research Organization: Engineering Foundation, New York, NY (United States)
• OSTI ID: 305691
• Report Number(s): CONF-9507274--PROC.; ISBN 0-306-45376-2
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
BITUMINOUS COAL
CHEMICAL COMPOSITION
COMBUSTION KINETICS
FLY ASH
FOSSIL-FUEL POWER PLANTS
MATHEMATICAL MODELS
PARTICLE SIZE
PHASE TRANSFORMATIONS
UNITED KINGDOM