CFBC evaluation of fuels processed from Illinois coals. Technical report, March 1, 1992--May 31, 1992

Technical Report · Thu Oct 01 04:00:00 EDT 1992

DOI:https://doi.org/10.2172/10183155· OSTI ID:10183155

Rajan, S ^[1]

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1. Southern Illinois Univ., Carbondale, IL (United States). Dept. of Mechanical Engineering and Energy Processes

The combustion and emissions properties of (a) flotation slurry fuel 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 is being investigated in a 4-inch internal diameter circulating fluidized bed combustor (CFBC). Combustion data such as SO{sub 2}, NO{sub x} emissions, combustion efficiency and ash mineral matter analyses from these fuels are compared with similar parameters from a reference coal burnt in the same fluidized bed combustor. In the last quarter, the CFBC was brought on line and tests were performed on standard coal No. 3 from the Illinois Basin Coal Sample Program (IBCSP). During this quarter, it was decided, that a more meaningful comparison could be obtained if, instead of using the IBCSP No. 3 coal as a standard, the run-of-mine Illinois No. 5 coal from the Kerr-McGee Galatia plant could be used as the reference coal for purposes of comparing the combustion and emissions performance, since the slurry and pellet fuels mentioned in (a) and (b) above were processed from fines recovered form this same Illinois No. 5 seam coal. Accordingly, run-of-the mine Illinois No. 5 coal from the Galatia plant were obtained, riffled and sieved to {minus}14+18 size for the combustion tests. Preliminary combustion tests have been made in the CFBC with this new coal. In preparation for the slurry tests, the moisture content of the beneficiated slurry samples was determined. Proximate and ultimate analyses of all the coal samples were performed. Using a Leeds and Northrup Model 7995-10 Microtrek particle size analyzer, the size distributions of the coal in the three slurry samples were determined. The mineral matter content of the coal in the three slurry samples and the Illinois No. 5 seam coal were investigated using energy dispersive x-ray analysis.

• Research Organization: Illinois State Geological Survey, Champaign, IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States); Illinois Dept. of Energy and Natural Resources, Springfield, IL (United States)
• DOE Contract Number: FG22-91PC91334
• OSTI ID: 10183155
• Report Number(s): DOE/PC/91334--T96; ON: DE93000947
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600
014000
CHEMICAL ANALYSIS
CIRCULATING SYSTEMS
COAL
COAL FINES
COMBUSTION
EXPERIMENTAL DATA
FLOTATION
FLUIDIZED-BED COMBUSTION
FLUIDIZED-BED COMBUSTORS
FUEL PELLETS
FUEL SLURRIES
MIXTURES
PARTICLE SIZE
PROGRESS REPORT
PROPERTIES AND COMPOSITION
WATER