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
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
010406 -- Coal & Coal Products-- Pyrolysis & Cracking-- (-1987)
03 NATURAL GAS
033000 -- Natural Gas-- Properties & Composition
04 OIL SHALES AND TAR SANDS
040402* -- Oil Shales & Tar Sands-- Surface Methods
ALKANES
ALKENES
AROMATICS
BENZENE
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
DATA
DECOMPOSITION
ELEMENTS
ENERGY SOURCES
ETHANE
ETHYLENE
EXPERIMENTAL DATA
FLUIDS
FOSSIL FUELS
FUELS
GASES
HIGH TEMPERATURE
HYDROCARBONS
HYDROGEN
INFORMATION
KEROGEN
MATERIALS
MEDIUM PRESSURE
METHANE
MINERAL OILS
NONMETALS
NUMERICAL DATA
OIL SHALES
OIL YIELDS
OILS
ORGANIC COMPOUNDS
ORGANIC MATTER
OTHER ORGANIC COMPOUNDS
PYROLYSIS
SHALE GAS
SHALE OIL
SUBBITUMINOUS COAL
THERMOCHEMICAL PROCESSES
YIELDS