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Computer model for in situ oil shale retorting: effects of input-gas properties. [RISE]

Conference ·
OSTI ID:7101505
;

A one-dimensional mathematical model has been developed for simulating the chemico-physical processes involved in the concurrent, vertical retorting of a rubblized bed of oil shale. Both hot-gas retorting and combustion retorting can be simulated. The flow rate of the gas stream and the composition and temperature of both the gas stream and the shale particles are calculated as a function of time and location in the retort. The rates of recovery of oil and water from the retort are also computed. The model is used to predict commercial in-situ retorting phenomena for typical conditions of shale composition, particle size, packing fraction, and input-gas properties. The predicted effects of input-gas properties (flow rate, temperature, and composition) are examined in detail. The model indicates that a gas input of air diluted with steam or CO/sub 2/ is effective in controlling the temperature and maximizing the oil yield, without causing the large decrease in retorting rate associated with the use of a mixture of air and recycle gas. The air/steam mixture is also attractice because it yields a retort product gas with a higher heating value.

Research Organization:
California Univ., Livermore (USA). Lawrence Livermore Lab.
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
7101505
Report Number(s):
UCRL-79033; CONF-770419-2
Country of Publication:
United States
Language:
English

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Related Subjects

04 OIL SHALES AND TAR SANDS
040401* -- Oil Shales & Tar Sands-- In Situ Methods
True & Modified
AIR
BITUMINOUS MATERIALS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
COMBUSTION
DISPERSIONS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUELS
GASES
GASIFICATION
IN-SITU COMBUSTION
IN-SITU PROCESSING
IN-SITU RETORTING
KINETICS
MATHEMATICAL MODELS
MIXTURES
MODIFIED IN-SITU PROCESSES
OIL SHALES
ONE-DIMENSIONAL CALCULATIONS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PROCESSING
REACTION KINETICS
RETORTING
RISE
STEAM
THERMOCHEMICAL PROCESSES