Centrifugal drying and dedusting process
A centrifugal drying and dedusting process is provided to dedust heavy oil derived from solid hydrocarbon-containing material such as oil shale, coal or tar sand. In the process, heavy oil laden with particulates derived from the solid hydrocarbon-containing material is centrifuged into a dedusted stream of heavy oil and a dust laden centrifuge sludge. The dedusted stream of oil can be further dedusted in a desalter, after being first mixed with fresh water, to form a purified, highly dedusted, effluent stream of heavy oil. Dust laden water from the desalter is centrifuged into a dedusted stream of water and a dewatered centrifuge sludge. The dedusted stream of water is recycled upstream of the desalter and mixed with the influent oil stream. Desirably, the centrifuges sludges are mixed, heated, dried and separated into another dedusted stream of oil and a powdery, dust-enriched residual stream which can be combusted in a lift pipe for use as heat carrier material in the dryer and retort.
- Assignee:
- Standard Oil Co.
- Patent Number(s):
- US 4473461
- OSTI ID:
- 6423904
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020400* -- Petroleum-- Processing
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CENTRIFUGATION
CHEMICAL REACTORS
COAL
DEMINERALIZATION
DESALINATION
DISTILLATION EQUIPMENT
DRYERS
DRYING
DUSTS
ENERGY SOURCES
EQUIPMENT
FOSSIL FUELS
FUELS
GEOLOGIC DEPOSITS
MATERIALS
OIL SAND DEPOSITS
OIL SHALES
PETROLEUM
PETROLEUM FRACTIONS
PETROLEUM RESIDUES
PHASE CHANGE MATERIALS
PURIFICATION
RETORTS
SEPARATION EQUIPMENT
SEPARATION PROCESSES
SLUDGES
TAR SAND TRIANGLE DEPOSIT
WASTE PRODUCT UTILIZATION