Development of an advanced process for drying fine coal in an inclined fluidized bed

Technical Report · Thu Feb 01 04:00:00 EST 1990

DOI:https://doi.org/10.2172/6273657· OSTI ID:6273657

Boysen, J E; Cha, C Y; Barbour, F A; Turner, T F; Kang, T W; Berggren, M H; Hogsett, R F; Jha, M C

The objective of this research project was to demonstrate a technically feasible and economically viable process for drying and stabilizing high-moisture subbituminous coal. Controlled thermal drying of coal fines was achieved using the inclined fluidized-bed drying and stabilization process developed by the Western Research Institute. The project scope of work required completion of five tasks: (1) project planning, (2) characterization of two feed coals, (3) bench-scale inclined fluidized-bed drying studies, (4) product characterization and testing, and (5) technical and economic evaluation of the process. High moisture subbituminous coals from AMAX Eagle Butte mine located in the Powder River Basin of Wyoming and from Usibelli Coal Mine, Inc. in Healy, Alaska were tested in a 10-lb/hr bench-scale inclined fluidized-bed. Experimental results show that the dried coal contains less than 1.5% moisture and has a heating value over 11,500 Btu/lb. The coal fines entrainment can be kept below 15 wt % of the feed. The equilibrium moisture of dried coal was less than 50% of feed coal equilibrium moisture. 7 refs., 60 figs., 47 tabs.

• Research Organization: Western Research Inst., Laramie, WY (USA); AMAX Research and Development Center, Golden, CO (USA)
• Sponsoring Organization: DOE/FE
• DOE Contract Number: AC22-88PC88886
• OSTI ID: 6273657
• Report Number(s): DOE/PC/88886-T5; ON: DE91004209
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010300* -- Coal
Lignite
& Peat-- Preparation-- (1987-)
010600 -- Coal
Lignite
& Peat-- Properties & Composition
CARBONACEOUS MATERIALS
COAL
COAL FINES
COAL LIQUIDS
COST
DATA
DOCUMENT TYPES
DRYING
ECONOMIC ANALYSIS
ECONOMICS
ENERGY SOURCES
EXPERIMENTAL DATA
FLUIDIZED BEDS
FLUIDS
FOSSIL FUELS
FUELS
INFORMATION
LIQUIDS
MATERIAL BALANCE
MATERIALS
MOISTURE
NUMERICAL DATA
PROGRESS REPORT
REMOVAL
SUBBITUMINOUS COAL
SURFACE TREATMENTS
WATER REMOVAL