Preheater studies in coal liquefaction, April 1--June 30, 1978
Isothermal, noncatalytic liquefaction runs were completed at 425/sup 0/C, 2000 psi and slurry space velocities of 170 to 6000 lb/ft-h with Illinois No. 6 coal in SRC II heavy distillate. Viscosities of whole liquid products, measured at 70/sup 0/C, exceeded 10,000 cp when produced at liquid space velocities greater than 1000 lbs/h-ft/sup 3/. The H-Coal PDU preheater is estimated to operate at a space velocity of 2700 lbs/h-ft/sup 3/ and the exit product probably has a high low-temperature viscosity. Conversions increase during initial reaction and reach about 70% to THF solubles and 50% to benzene solubles at the end of the 60 foot reactor. Approximately 30% of the sulfur is removed, the H/C ratio does not change and little gas is formed. Flow calculations indicate slug flow conditions with residence times of 0.3 to 8 minutes in the reactor.
- Research Organization:
- Sandia Labs., Albuquerque, NM (USA)
- OSTI ID:
- 6795149
- Report Number(s):
- SAND-78-0789
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
CARBONACEOUS MATERIALS
CHEMICAL REACTORS
COAL
COAL LIQUEFACTION
COAL LIQUIDS
EFFICIENCY
ENERGY SOURCES
FOSSIL FUELS
FUELS
LIQUEFACTION
ORGANIC SOLVENTS
SOLVENTS
SRC-II PROCESS
THERMOCHEMICAL PROCESSES
VISCOSITY