Influence of coal rank on oil yield in low-severity hydropyrolysis with and without a dispersed catalyst
- Univ. of Strathclyde, Glasgow (England)
Although hydropyrolysis processes have been historically associated with high yields of methane and light hydrocarbon gases, oil yield and selectivity can be optimized by operating at relatively low temperatures (< 550{degree}C) and moderate pressures ({approximately}150 bar). Indeed, when a dispersed catalyst such as sulfided molybdenum is employed in fixed-bed hydropyrolysis, liquid yields are comparable to those achieved in direct liquefaction. The influence of coal rank on oil yields with and without the Mo catalyst has been investigated using some of the Argonne coals, a number of European bituminous coals and Turkish lignites and an Australian brown coal. For the lower-rank coals, the improvements in oil yields upon catalyst addition are much more variable, which probably reflects the differing degrees of success in limiting retrogressive char-forming reactions.
- OSTI ID:
- 6798844
- Report Number(s):
- CONF-900402-; CODEN: ACFPA
- Journal Information:
- Preprints of Papers, American Chemical Society, Division of Fuel Chemistry; (USA), Vol. 35:1; Conference: 199. national meeting of the American Chemical Society, Boston, MA (USA), 22-27 Apr 1990; ISSN 0569-3772
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COAL LIQUEFACTION
CATALYSTS
COAL RANK
DATA ANALYSIS
HIGH PRESSURE
HIGH TEMPERATURE
MEASURING INSTRUMENTS
MEASURING METHODS
MOLYBDENUM
OIL YIELDS
OPTIMIZATION
PROCEEDINGS
DOCUMENT TYPES
ELEMENTS
LIQUEFACTION
METALS
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENTS
YIELDS
010405* - Coal
Lignite
& Peat- Hydrogenation & Liquefaction