Polar solvent extraction and dedusting process
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
- Country of Publication:
- United States
- Language:
- English
Similar Records
Drying and dedusting process
Multiple stage desalting and dedusting process
Related Subjects
040402* -- Oil Shales & Tar Sands-- Surface Methods
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COMBUSTION
DECOMPOSITION
DISSOLUTION
DRYING
DUSTS
ENERGY SOURCES
ENERGY TRANSFER
EXTRACTION
FOSSIL FUELS
FUELS
HEAT TRANSFER
HYDROCARBONS
MATERIALS
MINERAL OILS
OIL SHALES
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDATION
REMOVAL
RETORTING
SEPARATION EQUIPMENT
SEPARATION PROCESSES
SHALE OIL
SLUDGES
SOLVENT EXTRACTION
THERMOCHEMICAL PROCESSES
WASTE PRODUCT UTILIZATION