Polar solvent extraction and dedusting process

Patent · Tue Oct 01 00:00:00 EDT 1985

OSTI ID:5864658

Taylor, J L

A process is provided to produce and dedust oil from oil shale and other types of solid hydrocarbon-containing material. In the process, raw oil shale or other solid hydrocarbon-containing material is retorted, preferably with solid heat carrier material, to liberate an effluent product stream of hydrocarbons containing entrained particulates of dust derived from the oil shale or other solid hydrocarbon-containing material. A fraction of oil containing most of the dust is separated from the effluent product stream and fed to one or more dedusters. The dust-laden oil is dissolved in a special dedusting solvent which contains both polar and non-polar solvents. In the deduster, the dissolved oil is separated into a dedusted stream of oil and solvents and a residual stream of dust-laden sludge. Solvents are recovered from the dedusted stream as well as the sludge. The recovered solvents are recycled to the deduster for use in dedusting the oil. The sludge is preferably dried and combusted for use as part of the solid heat carrier material in the retort.

• Assignee: Standard Oil Co., Gulf Oil Corp.
• Patent Number(s): US 4544477
• OSTI ID: 5864658
• Resource Relation: Patent File Date: Filed date 12 Oct 1983; Other Information: PAT-APPL-541154
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
DUSTS
REMOVAL
OIL SHALES
RETORTING
SOLVENT EXTRACTION
COMBUSTION
DISSOLUTION
DRYING
HEAT TRANSFER
HYDROCARBONS
SEPARATION EQUIPMENT
SHALE OIL
SLUDGES
WASTE PRODUCT UTILIZATION
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
DECOMPOSITION
ENERGY SOURCES
ENERGY TRANSFER
EXTRACTION
FOSSIL FUELS
FUELS
MATERIALS
MINERAL OILS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDATION
SEPARATION PROCESSES
THERMOCHEMICAL PROCESSES
040402* - Oil Shales & Tar Sands- Surface Methods