Preheater studies in coal liquefaction. Quarterly report, January 1--March 31, 1978
Noncatalytic conversion of Illinois No. 6 coal to liquid products was studied at 450/sup 0/C, 2000 psi and liquid space velocities of 170 to 4700 lbs/h-ft/sup 3/. Initial dissolution with formation of preasphaltenes and the resultant high viscosity product occurred rapidly. Viscosities, as measured at 70/sup 0/C, decreased from 28,000 cp to 120 cp as the liquid space velocity decreased from 4700 to 170 lb/h-ft/sup 3/. Asphaltene and oil concentrations increased during the reaction, each accounting fro 40 percent of the coal liquid that formed at the low space velocity; the preasphaltenes accounted for the remaining 20 percent of coal liquid formed. Liquid product distillation and analyses of the gas stream did not provide definitive data since compositional changes were small relative to the total stream compositions. Calculations and simulation experiments indicate the reactor operates in the slug/froth region. Further work is needed to determine actual flow regimes and estimate residence times.
- Research Organization:
- Sandia Labs., Albuquerque, NM (USA)
- DOE Contract Number:
- EY-76-C-04-0789
- OSTI ID:
- 6648706
- Report Number(s):
- SAND-78-1124
- Country of Publication:
- United States
- Language:
- English
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010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
ASPHALTENES
ASPHALTS
BENCH-SCALE EXPERIMENTS
BITUMENS
CHEMICAL REACTORS
COAL LIQUEFACTION
COAL LIQUIDS
H-COAL PROCESS
LIQUEFACTION
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
SYNTHOIL PROCESS
TAR
THERMOCHEMICAL PROCESSES
VISCOSITY