Fine particulate removal from oil shale on a travelling grate retort
Fines are removed from a bed of oil bearing shale which has been charged onto a travelling grate retort. The retort includes a number of shale processing zones through which the traveling grate carries the burden of oil bearing shale. The zones include various drying, heating, retorting, combustion, heat recovery, and cooling zones. A fluid such as air, inert gas, or a process gas is passed through the bed prior to the retortng of the oil from the shale. The flow of fluid entrains substantially all of the fines in the burden. The fluid together with the entrained fines are evacuated from the traveling grate retort for disposal or processing. The direction of the fluid flow is either in the updraft or downdraft mode under pressure or suction. This sweep or vacuum is accomplished simultaneously with drying or preheating for a specific oil shale.
- Assignee:
- EDB-85-044309
- Patent Number(s):
- US 4381988
- OSTI ID:
- 5977327
- Country of Publication:
- United States
- Language:
- English
Similar Records
Traveling grate method for the recovery of oil from oil bearing minerals
Traveling grate method for the recovery of oil from shale
Related Subjects
040402* -- Oil Shales & Tar Sands-- Surface Methods
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
CHEMICAL REACTORS
DECOMPOSITION
DESIGN
DISTILLATION EQUIPMENT
ENERGY SOURCES
EQUIPMENT
FLUID FLOW
FLUIDIZED BED
FOSSIL FUELS
FUELS
GAS FLOW
MATERIALS
OIL SHALE FINES
OIL SHALES
PARTICLES
PARTICULATES
REMOVAL
RETORTING
RETORTS