CFBC evaluation of fuels processed from Illinois coals. Final technical report, September 1, 1991--November 10, 1992

Technical Report · Thu Dec 31 04:00:00 EST 1992

DOI:https://doi.org/10.2172/10117547· OSTI ID:10117547

Rajan, S ^[1]

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1. Southern Illinois Univ., Carbondale, IL (United States)

The fuels studied in this project are (a) three flotation slurry fuels beneficiated from coal fines at various stages of the cleaning process and (b) coal-sorbent pellets made from the flotation concentrate of the same beneficiation process using corn starch as binder, (c) a run-of-mine Illinois No. 5 coal. Combustion data such as SO{sub 2}, NO{sub x} emissions, combustion efficiency and ash mineral matter analyses from the slurry and pellet fuels are compared with similar parameters from the reference coal burnt under similar conditions of bed temperature and fluidization velocity. The combustion tests performed in a 4 in. internal diameter CFBC showed that the combustion efficiency of the slurry fuels and the pellets were quite comparable with that of the standard coal in the range of 91--98%. Sulfur dioxide emissions in lbs per million Btu from the slurry fuels were low enough to satisfy EPA emissions requirements with Ca/S ratios of 1.5 or less. Oxides of nitrogen emissions were generally on the order of 0.3 lbs per million Btu from the slurry fuels under the conditions of the present tests, while that from the pellets were between 0.6 to 0.75 lbs per million Btu depending on bed temperature.

• Research Organization: Illinois Dept. of Energy and Natural Resources, Springfield, IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FG22-91PC91334
• OSTI ID: 10117547
• Report Number(s): DOE/PC/91334--T105; ON: DE94005706; BR: AV0100000
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010300
014000
ASHES
CIRCULATING SYSTEMS
COAL
COAL DEPOSITS
COAL FINES
COAL PREPARATION
COMBUSTION
COMBUSTION PROPERTIES
COMPARATIVE EVALUATIONS
ELEMENTS
EMISSION
FLOTATION
FLUIDIZED-BED COMBUSTION
FLUIDIZED-BED COMBUSTORS
FUEL SLURRIES
ILLINOIS
NITROGEN OXIDES
PELLETIZING
PERFORMANCE TESTING
PREPARATION
PROGRESS REPORT
SULFUR DIOXIDE
TRACE AMOUNTS