Preliminary Investigation of Fine-Ground Coal Combustion

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Title Preliminary Investigation of Fine-Ground Coal Combustion
Creator Briceland, Charles L.; Khinkis, Mark J.; Waibel, Richard T.
Publisher Digitized by J. Willard Marriott Library, University of Utah
Date 1981
Spatial Coverage Chicago, Illinois
Abstract A preliminary investigation was performed on the combustion characteristics of a fine-ground coal flame. This flame was compared with a natural gas flame and a standard pulverized coal flame. A Pittsburgh No.8 bituminous coal was ground to 99.9%, less than 37 microns. One-half of the mass of the coal had particle sizes less than about 8.5 microns. The coal was fired in a boiler burner with various fuel nozzles in a research furnace modified to simulate an oil-fired boiler furnace at a rate of about 2. million Btu per hour with 20% excess air. The flame was evaluated by visual length and stability . The combustion air temperature and percent of primary air were varied with different nozzles to maintain visual flames from 35 to 45 cm in length. The carbon monoxide and unburned carbon in the fly ash were measured on the furnace axis to substantiate the visual observations of the flame length. The natural gas flame was visually the same shape and 10 cm long,and the standard pulverized coal flame was from 190 to 2.30 em long. Short runs were done burning a natural gas/fine-ground coal mixture. In these cases, the visual flame length was very close to the flame length of fine-ground coal combustion.
Type Text
Format application/pdf
Language eng
Rights This material may be protected by copyright. Permission required for use in any form. For further information please contact the American Flame Research Committee.
Conversion Specifications Original scanned with Canon EOS-1Ds Mark II, 16.7 megapixel digital camera and saved as 400 ppi uncompressed TIFF, 16 bit depth.
Scanning Technician Cliodhna Davis
ARK ark:/87278/s6736tg6
Setname uu_afrc
ID 1417
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