Enhanced recovery of hydrocarbonaceous fluids oil shale

Patent · Tue Oct 06 04:00:00 EDT 1987

OSTI ID:5769288

Mitchell, T O

This patent describes a hydrogen transfer extraction process for recovering hydrocarbonaceous fluids from oil shale containing kerogen. A mixture of the oil shale and a normally liquid hydrocarbon is reacted under substantially autogeneous pressure and a temperature under the retorting temperature of the oil shale for a period of time sufficient to recover hydrocarbonaceous fluids from the shale wherein the amount of liquid hydrocarbon in the mixture does not exceed 25 percent by weight of the shale. The improvement comprises: (a) cooling the reactants and recovering by distillation the hydrocarbonaceous fluids from the shale; (b) extracting the reacted shale with a solvent selected from a member of the group consisting of heptane, pyridine, tetrahydrofuran and mixtures thereof, which extract contains substantially increased amounts of hydrocarbonaceous fluids, which fluids contain substantially reduced amounts of hydrocabonaceous gases and substantially increased amounts of hydrocarbonaceous liquids; and (c) stripping the solvent from the extract and recovering the extract.

• Assignee: Mobil Oil Corp., New York, NY
• Patent Number(s): US 4698149
• OSTI ID: 5769288
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
040402* -- Oil Shales & Tar Sands-- Surface Methods
ALKANES
AZINES
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
COOLING
DECOMPOSITION
DISPERSIONS
DISTILLATION
ENERGY SOURCES
ENHANCED RECOVERY
EXTRACTION
FOSSIL FUELS
FUELS
FURANS
HEPTANE
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
HYDROGEN TRANSFER
KEROGEN
MANAGEMENT
MATERIALS
MATERIALS RECOVERY
MINERAL OILS
MIXTURES
OIL SHALES
OIL YIELDS
OILS
ORGANIC COMPOUNDS
ORGANIC MATTER
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OTHER ORGANIC COMPOUNDS
PRESSURE DEPENDENCE
PROCESS SOLUTIONS
PROCESSING
PYRIDINES
RECOVERY
RETORTING
SEPARATION PROCESSES
SHALE OIL
SOLUTIONS
SOLVENT EXTRACTION
SOLVENTS
TEMPERATURE DEPENDENCE
TETRAHYDROFURAN
TIME DEPENDENCE
WASTE MANAGEMENT
WASTE PROCESSING
YIELDS