Pressurized fluidized bed combustor and coal gun construction therefor
A pressurized, fluidized bed combustor is disclosed. It includes a housing having a combustor chamber therein with a distributor plate closing the lower portion of the housing and arranged above a fluidizer windbox, which, in turn, is arranged above a heat exchanger inlet plenum which is mounted above a bottom of the combustor. A coal gun is provided for discharging coal into the fluidized bed, and it comprises an outer guide tube which extends from a spaced location above the distributor plate downwardly through the bottom of the combustor chamber and it includes a portion which extends exteriorly of the combustor chamber. This exterior portion carries a ball valve which has a passage therethrough which makes it possible to insert a coal supply pipe upwardly in the interior of the outer guide pipe and through the passage of the ball valve up to substantially the top of the outer pipe at a location above the distributor plate within the reaction bed. For withdrawing the coal supply pipe, it is possible to remove the pipe downwardly through the ball valve until the top end thereof is located directly below the ball valve but still within the outer diameter pipe and located within a stuffing box thereof. At such location, then the ball valve is closed and the ball supply pipe may be withdrawn all the way without reducing the pressure in the reactor.
- Assignee:
- Curtiss-Wright Corp
- Patent Number(s):
- US 4292022
- OSTI ID:
- 5785689
- Resource Relation:
- Patent File Date: Filed date 1 Aug 1979
- Country of Publication:
- United States
- Language:
- English
Similar Records
Fluidized bed combustor and tube construction therefor
Fluidized bed combustor and removable windbox and tube assembly therefor
Related Subjects
42 ENGINEERING
FLUIDIZED-BED COMBUSTORS
DESIGN
COAL
COMBUSTION CHAMBERS
FUEL FEEDING SYSTEMS
PIPES
TUBES
VALVES
CARBONACEOUS MATERIALS
COMBUSTORS
CONTROL EQUIPMENT
ENERGY SOURCES
EQUIPMENT
FLOW REGULATORS
FOSSIL FUELS
FUEL SYSTEMS
FUELS
MATERIALS
014000* - Coal
Lignite
& Peat- Combustion
421000 - Engineering- Combustion Systems