Coal cleaning to improve Illinois No. 6 Seam coal for combustion

Technical Report · Sat Sep 01 04:00:00 EDT 1984

OSTI ID:6517450

Parkinson, J; Torak, E

Illinois No. 6 Seam coal from Perry County, Illinois was tested at EPRI's Coal Cleaning Test Facility (CCTF) to see if physical coal cleaning can improve the coal's combustion performance. Union Electric burns this coal at its Labadie Power Station and experiences severe slagging problems that have forced unit derating. Also, low sulfur coal must be blended with the Illinois No. 6 coal to meet SO/sub 2/ emission standards of 4.8 lb/MBtu. The CCTF tested 560 tons of Illinois No. 6 Seam coal to: determine the washability characteristics; assess the degree of impurity liberation achievable by roll crushing; compare raw coal and different clean coal qualities; and produce specific quality coals for pilot scale combustion tests (1.5 MBtu/h heat release rate). The Illinois No. 6 Seam coal currently burned at the Labadie Power Station is cleaned by a baum jig process. The jig's average clean coal has a slagging index of 1.24 and SO/sub 2/ emission potential of 5.0 lb/MBtu compared with the raw coal's 1.65 slagging index and 6.8 lb SO/sub 2//MBtu. Improved-quality, clean coal was produced at the CCTF with a 0.95 slagging index and 4.5 lb SO/sub 2//MBtu. This clean coal was produced with only a two- to three- percentage point sacrifice in energy recovery from the existing jig process. Comparative combustion tests were conducted on raw, existing, and CCTF-cleaned coal samples. Combustion test results will be published by EPRI in the near future. 14 references, 20 figures, 23 tables.

• Research Organization: Kaiser (Raymond) Engineers, Inc., Homer City, PA (USA); Science Applications, Inc., Homer City, PA (USA)
• OSTI ID: 6517450
• Report Number(s): EPRI-CS-3666; ON: TI85920001
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600 -- Coal
Lignite
& Peat-- Properties & Composition
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
014000 -- Coal
Lignite
& Peat-- Combustion
ASH CONTENT
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CLEANING
COAL
COAL PREPARATION
COMBUSTION
CONCENTRATORS
CONTROL
DATA
DIAGRAMS
ENERGY SOURCES
EXPERIMENTAL DATA
FLOTATION
FLOWSHEETS
FOSSIL FUELS
FUELS
INFORMATION
JIGS
MATERIALS
NUMERICAL DATA
OXIDATION
QUALITY CONTROL
SEPARATION PROCESSES
SLAGS
SULFUR CONTENT
THERMOCHEMICAL PROCESSES