U-GAS: an alternative industrial fuel
IGT's U-GAS process incorporates a single-stage, fluidized-bed reactor to convert all grades of coal to a medium-Btu industrial fuel gas. In the U-GAS process, the crushed coal is introduced into the gasifier by a lockhopper system. The gasifier is a refractory-lined vessel in which coal is gasified with steam and oxygen at 1800/sup 0/ to 2000/sup 0/F, the temperature depending on the type of coal. Because of the high temperatures and the method of feeding coal, tar or heavy oils are not produced. Ash, after discharge from the gasifier into a water-filled hopper, is withdrawn as a slurry. Fines elutriated from the fluidized bed with the product gas are separated by cyclones and returned to the bottom of the gasifier where they are instantly gasified and withdrawn with the agglomerated ash. Reactor pressure can vary from near-ambient to 340 psig. Since 1977, IGT has been participating in a federally funded program to prepare a detailed design of a demonstration-scale U-GAS plant in the Memphis, Tenn., area.
- OSTI ID:
- 5923774
- Journal Information:
- IGT GaScope; (United States), Vol. 45
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COAL GASIFICATION
FLUIDIZED BED REACTORS
INTERMEDIATE BTU GAS
SYNTHESIS
U-GAS PROCESS
COAL
CONVERSION
DEMONSTRATION PLANTS
FUEL GAS
TENNESSEE
VERY HIGH TEMPERATURE
CARBONACEOUS MATERIALS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL DISPERSION REACTORS
FUELS
GAS FUELS
GASES
GASIFICATION
HOMOGENEOUS REACTORS
MATERIALS
NORTH AMERICA
REACTORS
SOUTHEAST REGION
THERMOCHEMICAL PROCESSES
USA
010404* - Coal
Lignite
& Peat- Gasification