Comprehensive report to Congress: Clean Coal Technology Program

Technical Report · Sun Jul 01 04:00:00 EDT 1990

DOI:https://doi.org/10.2172/6845128· OSTI ID:6845128

A project is described which will demonstrate an innovative technology to enhance the thermal and environmental value of low-rank subbituminous and lignite coals. This technology consists of supplying raw coal to a first-stage, vibratory fluidized-bed reactor, which removes loosely held water from the coal. The coal then enters a second-stage, vibratory fluidized-bed reactor, where tightly held (chemically bound) water, carboxyl groups, and volatile sulfur compounds are removed. The coal is then cooled in a vibratory fluidized-bed cooler. Coal exiting from the cooler is transported through vibrating screens and fluidized-bed separators for removal of pyritic sulfur and ash-forming minerals. Low-rank western coals normally contain 25 to 55% moisture and 0.5 to 1.5% sulfur, and have heating values of 5500 to 9000 Btu/lb. The net result of WECo's Advanced Coal Conversion Process is that such coals will be upgraded. Moisture content will be reduced to as low as 1%, sulfur content will be reduced to as low as 0.3%, and the heating value will be increased to about 12,000 Btu/lb. 4 figs.

• Research Organization: USDOE Assistant Secretary for Fossil Energy, Washington, DC (USA)
• Sponsoring Organization: DOE/FE
• OSTI ID: 6845128
• Report Number(s): DOE/FE-0192P; ON: DE90013559
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010300* -- Coal
Lignite
& Peat-- Preparation-- (1987-)
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CHEMICAL REACTORS
COAL
COST
DEMONSTRATION PROGRAMS
DESULFURIZATION
ENERGY SOURCES
FLUIDIZED BEDS
FOSSIL FUELS
FUELS
MANAGEMENT
MATERIALS
PROGRAM MANAGEMENT
REMOVAL
US CLEAN COAL TECHNOLOGY PROGRAM
WATER REMOVAL