Coal conversion with nondonor solvents: comparison with process solvents
Coal liquefaction yields were determined for 1-naphthanol, quinoline, naphthalene, phenanthridine, phenol, phenanthrene, carbazole, pyrene, and diphenyl ether using tubing-bomb tests. Comparisons are made with SRC and ITSL process solvents. The relative effectiveness of selected pure nondonor solvents for converting Kentucky No. 9 coal (Fies mine) to pyridine-soluble products at 427/sup 0/C (800/sup 0/F), 10-min reaction time, and 1.5 solvent-to-coal ratio was: 1-naphthol, quinoline, naphthalene, phenanthridine, phenanthrene, phenol, carbazole, pyrene, and diphenyl ether. The range of conversions varied from 78% to 32%. Without supplemental hydrogen, among the pure nondonor compounds studied only 1-naphthol (78% conversion) was as effective at converting coal to pyridine-soluble material as two high-quality process solvents, Wilsonville SRC-I (61%) and Lummus ITSL heavy oil solvent (82%). Pure 1-naphthol appears to be highly effective for solubilizing coal; pure quinoline was moderately to highly effective; pure naphthalene, phenanthrene, pyrene, phenanthridine, carbazole, phenol, and diphenyl ether were only moderately effective. The high conversion efficacy of 1-naphthol may be partially attributable to its condensation to binaphthol and the resulting availability of hydrogen, i.e., it may act as a limited hydrogen donor.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6933706
- Report Number(s):
- CONF-8405154-4; ON: DE84012355
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
AROMATICS
AZAARENES
AZINES
AZOLES
CARBAZOLES
CHEMICAL COMPOSITION
CHEMISTRY
CHROMATOGRAPHY
COAL LIQUEFACTION
COMPARATIVE EVALUATIONS
CONDENSED AROMATICS
DATA
EXPERIMENTAL DATA
GAS CHROMATOGRAPHY
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
HYDROGEN TRANSFER
HYDROXY COMPOUNDS
INFORMATION
LIQUEFACTION
MASS SPECTROSCOPY
NAPHTHALENE
NAPHTHOLS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC SOLVENTS
PHENANTHRENE
PHENOL
PHENOLS
PYRENE
PYRIDINES
QUINOLINES
SEPARATION PROCESSES
SOLVENTS
SPECTROSCOPY
SRC PROCESS
STRUCTURAL MODELS
THERMOCHEMICAL PROCESSES
TSL PROCESS
YIELDS