Engineering kinetics of short residence time coal liquefaction processes
Conference
·
OSTI ID:6365560
Conversion of coal to liquid products occurs rapidly at temperatures over 350/sup 0/C and consequently can be significant in preheaters or short residence time reactors. The extent of conversion can have an effect on the operation of preheaters or effectiveness of subsequent reactors. To obtain process information, Illinois No. 6 coal in SRC II heavy distillate was reacted at 13.8 kPa, temperatures of 400, 425, and 450/sup 0/C, and at slurry space velocities of 3200 to 96,000 kg/h-m/sup 3/. Product compositions and viscosities were measured. High concentrations of preasphaltenes occur in early reactions resulting in a high viscosity product. Subsequent reactions to asphaltenes and oils are less rapid.
- Research Organization:
- Sandia Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- EY-76-C-04-0789
- OSTI ID:
- 6365560
- Report Number(s):
- SAND-78-2154C; CONF-790405-6
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
010600 -- Coal
Lignite
& Peat-- Properties & Composition
ASPHALTENES
ASPHALTS
BITUMENS
CARBONACEOUS MATERIALS
CHEMICAL COMPOSITION
COAL
COAL LIQUEFACTION
COAL LIQUIDS
DISSOLUTION
ENERGY SOURCES
EXTRACTION
FOSSIL FUELS
FUELS
LIQUEFACTION
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
SEPARATION PROCESSES
SOLVENT EXTRACTION
SRC-II PROCESS
TAR
TEMPERATURE DEPENDENCE
THERMOCHEMICAL PROCESSES
VISCOSITY
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
010600 -- Coal
Lignite
& Peat-- Properties & Composition
ASPHALTENES
ASPHALTS
BITUMENS
CARBONACEOUS MATERIALS
CHEMICAL COMPOSITION
COAL
COAL LIQUEFACTION
COAL LIQUIDS
DISSOLUTION
ENERGY SOURCES
EXTRACTION
FOSSIL FUELS
FUELS
LIQUEFACTION
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
SEPARATION PROCESSES
SOLVENT EXTRACTION
SRC-II PROCESS
TAR
TEMPERATURE DEPENDENCE
THERMOCHEMICAL PROCESSES
VISCOSITY