Fluidized bed coal combustion reactor
A fluidized bed coal reactor includes a combination nozzle injector ash-removal unit formed by a grid of closely spaced open channels, each containing a worm screw conveyor, which function as continuous ash removal troughs. A pressurized air-coal mixture is introduced below the unit and is injected through the elongated nozzles formed by the spaces between the channels. The ash build-up in the troughs protects the worm screw conveyors as does the cooling action of the injected mixture. The ash layer and the pressure from the injectors support a fluidized flame holder combustion zone above the grid which heats water in boiler tubes disposed within and/or above the combustion zone and/or within the walls of the reactor.
- Assignee:
- U S Of America Nasa Administrator Of
- Patent Number(s):
- US 4287838
- OSTI ID:
- 5785659
- Resource Relation:
- Patent File Date: Filed date 15 Dec 1978
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
COAL
FLUIDIZED-BED COMBUSTION
FLUIDIZED BED REACTORS
DESIGN
FUEL INJECTION SYSTEMS
CONVEYORS
DEASHING
NOZZLES
PRESSURIZING
REACTOR CHANNELS
STEAM GENERATORS
TUBES
BOILERS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COMBUSTION
ENERGY SOURCES
EQUIPMENT
FOSSIL FUELS
FUEL DISPERSION REACTORS
FUEL SYSTEMS
FUELS
HAULAGE EQUIPMENT
HOMOGENEOUS REACTORS
MATERIALS
MATERIALS HANDLING EQUIPMENT
OXIDATION
REACTOR COMPONENTS
REACTORS
THERMOCHEMICAL PROCESSES
VAPOR GENERATORS
014000* - Coal
Lignite
& Peat- Combustion
421000 - Engineering- Combustion Systems