Low-sulfur fuel by pressurized entrainment carbonization of coal
An empirical approach that included mathematical models proved useful in predicting the yields and chemical properties of chars produced by pressurized entrainment carbonization of coal over a range of operating conditions. Carbonization runs were carried out according to a composite factorial design covering temperature, pressure, and entraining gas composition. The mathematical models indicate that char containing 0.7 percent sulfur or 0.49 pounds per million Btu could be produced from coal containing 2.5 percent sulfur at 1,900/sup 0/F, 400 psig, and an entraining gas containing 91 percent hydrogen and 9 percent nitrogen. Temperature, pressure, and hydrogen content of the entraining gas all influenced the total and organic sulfur content of the char and the sulfur content per unit heating value; only temperature and pressure affected the pyritic sulfur content of the char. Sulfate sulfur was unaffected by any of the three variables. Volatile matter content of the char decreased with increase in carbonization temperature, as would be expected, but was unaffected by pressure and entraining gas composition.
- Research Organization:
- Morgantown Energy Research Center, WV
- OSTI ID:
- 7359834
- Journal Information:
- Am. Chem. Soc., Div. Fuel Chem., Prepr.; (United States), Journal Name: Am. Chem. Soc., Div. Fuel Chem., Prepr.; (United States) Vol. 17:2; ISSN ACFPA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010401* -- Coal & Coal Products-- Carbonization-- (-1987)
010600 -- Coal
Lignite
& Peat-- Properties & Composition
CARBONACEOUS MATERIALS
CARBONIZATION
CHALCOGENIDES
CHARS
CHEMICAL ANALYSIS
CHEMICAL PROPERTIES
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COAL
CRYOGENIC FLUIDS
DECOMPOSITION
DESIGN
DIAGRAMS
ELEMENTS
ENERGY SOURCES
ENTRAINMENT
FLOWSHEETS
FLUIDS
FOSSIL FUELS
FUELS
HYDROGEN
IRON COMPOUNDS
IRON SULFIDES
MATHEMATICAL MODELS
MEDIUM PRESSURE
MINERALS
NONMETALS
ORES
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
PRODUCTION
PYRITE
PYRITES
SULFATES
SULFIDES
SULFUR
SULFUR COMPOUNDS
SULFUR ORES
TRANSITION ELEMENT COMPOUNDS
VERY HIGH TEMPERATURE
YIELDS