Flash pyrolysis of oil shale with various gases
The flash pyrolysis of Colorado Oil Shale with methane at a temperature of 800/sup 0/C and pressure of 500 psi appears to give the highest yield of hydrocarbon gas and liquid followed by hydrogen and lowest with helium. In the methane pyrolysis over 54.5% of the carbon in the kerogen is converted to ethylene and benzene. The flash pyrolysis with hydrogen (flash hydropyrolysis) of the oil shale at increasing temperatures showed a rapidly increasing amount of methane formed and a decrease in ethane formation, while the BTX (benzene mainly) yield remained at approximately 10%. At 950/sup 0/C and 500 psi almost all (97.0%) of the carbon in the kerogen is converted to liquid and gaseous hydrocarbons. Experiments with a mixture of a New Mexico sub-bituminous coal and oil shale under flash hydropyrolysis and methane pyrolysis conditions indicated higher yields of methane and ethylene and slightly lower yields of benzene than predicted by partial additive calculations. These exploratory experiments appear to be of sufficient interest to warrant a fuller investigation of the interaction of the natural resources, oil shale, coal and natural gas under flash pyrolysis conditions.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA)
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 5497831
- Report Number(s):
- BNL-33932; CONF-840415-13; ON: DE84005316
- Resource Relation:
- Conference: 187. national meeting of the American Chemical Society, St. Louis, MO, USA, 8 Apr 1984
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
03 NATURAL GAS
METHANE
PYROLYSIS
OIL SHALES
SUBBITUMINOUS COAL
BENZENE
ETHANE
ETHYLENE
EXPERIMENTAL DATA
HIGH TEMPERATURE
HYDROGEN
KEROGEN
MEDIUM PRESSURE
OIL YIELDS
SHALE GAS
SHALE OIL
ALKANES
ALKENES
AROMATICS
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
DATA
DECOMPOSITION
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GASES
HYDROCARBONS
INFORMATION
MATERIALS
MINERAL OILS
NONMETALS
NUMERICAL DATA
OILS
ORGANIC COMPOUNDS
ORGANIC MATTER
OTHER ORGANIC COMPOUNDS
THERMOCHEMICAL PROCESSES
YIELDS
040402* - Oil Shales & Tar Sands- Surface Methods
010406 - Coal & Coal Products- Pyrolysis & Cracking- (-1987)
033000 - Natural Gas- Properties & Composition