Reactivity of coal in direct hydrogenation processes: Technical progress report, December 1987-February 1988
The rate and extent of direct coal hydroliquefaction for 5 bituminous coals from the Argonne Premium Sample Bank have been measured. Data were obtained in batch microautoclave tubing bomb reactors at three temperatures (375, 400, 425/degree/C) and 5 residence times (3, 5, 10, 15, 40 minutes) in 1-methylnaphthalene vehicle under a hydrogen blanket. Data on rate of conversion of coal to THF and toluene solubles were modeled with a simple reversible rate expression, and activation energies for conversion to each solvent solubility class determined. Data on carbon and proton distribution in the coals were obtained by /sup 1/H-NMR (Combined Rotational and Multiple Pulse Spectroscopy) and /sup 13/C-NMR (CPMASDipolar Dephasing). A strong correlation of activation energy with the aliphatic hydrogen content of the coal was found for conversion to THF solubles. Toluene solubles activation energies were found to be highly correlated (R/sup 2 > 90%) with total oxygen, and protonated aliphatic carbon. /Sup 13/C-NMR data indicated a high degree of correlation between protonated aliphatic carbon and total oxygen for only the bituminous coals from the Argonne suite, suggesting the importance of etheric oxygen in crosslinking structures for determination of bituminous coal reactivity. 26 refs., 8 figs., 9 tabs.
- Research Organization:
- Colorado School of Mines, Golden (USA). Dept. of Chemical Engineering and Petroleum Refining
- DOE Contract Number:
- FG22-85PC80907
- OSTI ID:
- 5151011
- Report Number(s):
- DOE/PC/80907-T9; ON: DE88009878
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010405* -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
ACTIVATION ENERGY
AUTOCLAVES
BITUMINOUS COAL
BLACK COAL
CARBON 13
CARBON ISOTOPES
CARBONACEOUS MATERIALS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COAL
COAL LIQUEFACTION
DOCUMENT TYPES
ENERGY
ENERGY SOURCES
EVEN-ODD NUCLEI
FOSSIL FUELS
FUELS
HYDROGEN 1
HYDROGEN ISOTOPES
HYDROGENATION
ISOTOPES
KINETICS
LIGHT NUCLEI
LIQUEFACTION
MAGNETIC RESONANCE
MATERIALS
NUCLEAR MAGNETIC RESONANCE
NUCLEI
ODD-EVEN NUCLEI
ORGANIC SOLVENTS
PROGRESS REPORT
REACTION KINETICS
RESONANCE
SOLVENTS
STABLE ISOTOPES
TEMPERATURE DEPENDENCE
THERMOCHEMICAL PROCESSES
TIME DEPENDENCE