Selection of feed coals for production of premium fuel using column flotation and selective agglomeration processes

Book · Sun Oct 01 04:00:00 EDT 1995

OSTI ID:110032

Jha, M C; Smit, F J ^[1]

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1. Entech Global, Inc., Golden, CO (United States)

Column flotation and selective agglomeration are promising advanced physical cleaning processes that can be developed for preparing premium quality coal-water slurry fuel from coal fines. Such a fuel could either replace oil or natural gas in certain industrial and utility boilers or else could be burned in advanced combustors currently under development. These applications require coal cleaned to sulfur and ash contents below 258 g/GJ and 430--860 g/GJ (0.6 lb/million Btu and 1--2 lb/million Btu), respectively, to meet clean air emission requirements. A highly loaded slurry must be produced in order to avoid derating the boilers, and the total cost of the fuel must be below $2.37/GJ ($2.50/million Btu) in order to penetrate the market by the turn of the century. Achieving these technical and economic goals depend critically on the selection of suitable feed coals. This paper describes the identification and evaluation of 18 coals and final selection of six coals from different regions of the United States as potential feedstock for preparation of premium fuel. The work is being performed under a cost-shared DOE project.

• OSTI ID: 110032
• Report Number(s): CONF-950002--; ISBN 0-87335-130-4
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
AGGLOMERATION
ASH CONTENT
BITUMINOUS COAL
CHEMICAL FEEDSTOCKS
COAL PREPARATION PLANTS
COMPILED DATA
COST
FLOTATION
FUEL SLURRIES
GRINDING
MATERIALS TESTING
ORGANIC SULFUR COMPOUNDS
PRODUCTION
SULFUR CONTENT
WATER
WETTABILITY