Enhanced coal liquefaction by hydropyrolysis in supercritical fluids. Quarterly report, April-June 1984
Investigation of dibenzyl ether (DBE) thermolysis in supercritical water has continued with a study of the influence of water density on DBE consumption and product yields at the reaction temperature of 374/sup 0/C. The degree to which DBE pyrolysis is affected by water density can be clearly demonstrated by considering these data for a specific reaction time of 20 minutes. As the reduced density is increased from 0.2 to 1.3, the fraction of DBE remaining after 20 minutes decreases from approximately 0.90 to less than 0.10. Further work has also been done on the pyrolysis of benzyl phenyl amine (BPA). Pyrolysis of BPA in subcritical water at 340/sup 0/C gave a product spectrum similar to that obtained for pyrolysis in supercritical water at 386/sup 0/C. However, the yield of aniline decreased slighly with reduced temperature and the yield of toluene decreased substantially with reduced temperature. The product spectrum of BPA pyrolysis in a mixture of water and tetralin at 386/sup 0/C was comparable to that found in previous experiments. Major products were aniline and toluene with lesser amounts of benzyl alcohol. The yield of toluene was unaffected by the addition of tetralin, while the aniline yield and overall BPA conversion decreased from values obtained by pyrolysis in supercritical water. The effect of the addition of tetralin on benzyl alcohol yield could not be determined from the present experimental results. Investigation of the phase equilibria at elevated temperatures and pressures for model coal-derived compounds in supercritical methanol has continued.
- Research Organization:
- Delaware Univ., Newark (USA). Dept. of Chemical Engineering
- DOE Contract Number:
- FG22-82PC50799
- OSTI ID:
- 6170217
- Report Number(s):
- DOE/PC/50799-T4; ON: DE85001850
- Resource Relation:
- Other Information: Portions are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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COAL
PYROLYSIS
SUPERCRITICAL GAS EXTRACTION
DENSITY
EQUILIBRIUM
EXPERIMENTAL DATA
HYDROGEN PRODUCTION
HYDROGENATION
LIQUIDS
METHANOL
NAPHTHALENE
STRUCTURAL MODELS
TETRALIN
VAPORS
WATER
ALCOHOLS
AROMATICS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL LIQUEFACTION
CONDENSED AROMATICS
DATA
DECOMPOSITION
ENERGY SOURCES
EXTRACTION
FLUIDS
FOSSIL FUELS
FUELS
GASES
HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
LIQUEFACTION
MATERIALS
NUMERICAL DATA
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SEPARATION PROCESSES
THERMOCHEMICAL PROCESSES
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