Oil shale retorting and retort water purification process

Patent · Tue Jan 22 04:00:00 EST 1985

OSTI ID:5752968

Venardos, D G; Grieves, C G

An oil shale process is provided to retort oil shale and purify oil shale retort water. In the process, raw oil shale is retorted in an in situ underground retort or in an above ground retort to liberate shale oil, light hydrocarbon gases and oil shale retort water. The retort water is separated from the shale oil and gases in a sump or in a fractionator or quench tower followed by an API oil/water separator. After the retort water is separated from the shale oil, the retort water is steam stripped, carbon adsorbed and biologically treated, preferably by granular carbon adsorbers followed by activated sludge treatment or by activated sludge containing powdered activated carbon. The retort water can be granularly filtered before being steam stripped. The purified retort water can be used in various other oil shale processes, such as dedusting, scrubbing, spent shale moisturing, backfilling, in situ feed gas injection and pulsed combustion.

• Assignee: Standard Oil Co. (Indiana); Gulf Oil Corp.
• Patent Number(s): US 4495056
• OSTI ID: 5752968
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
040401* -- Oil Shales & Tar Sands-- In Situ Methods
True & Modified
040900 -- Oil Shales & Tar Sands-- Waste management
ACTIVATED SLUDGE PROCESS
ADSORPTION
BITUMINOUS MATERIALS
CARBON
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
DECOMPOSITION
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
IN-SITU PROCESSING
IN-SITU RETORTING
LIQUID WASTES
MANAGEMENT
MATERIALS
NONMETALS
OIL SHALES
OXYGEN COMPOUNDS
PROCESSING
RETORTING
SEPARATION EQUIPMENT
SEPARATION PROCESSES
SORPTION
WASTE MANAGEMENT
WASTE PROCESSING
WASTE WATER
WASTES
WATER
WATER REQUIREMENTS
WATER TREATMENT