Fluidized bed steam generator and method of generating steam including a separate recycle bed
This patent describes a steam generator comprising a furnace section, means in the furnace section for receiving a plurality of vertically spaced beds of particulate fuel material, means for introducing air into the beds to fluidize the beds and promote the combustion of the fuel material, means for introducing additional fuel to each of the beds, the effluent gases from each of the beds rising upwardly into the areas above the bed. One boundary wall of the furnace section has openings for permitting the discharge of effluent gases from the areas above the beds. A method is described of operating a steam generator comprising the steps of establishing at least one bed of particulate material including fuel in a furnace, introducing air into the bed at a predetermined velocity to fluidize and promote the combustion of the material, adding additional particulate material including fuel to the bed, discharging effluent gases from the fluidized bed through a boundary wall of the furnace, the boundary wall serving as a common wall between the furnace and a heat recovery enclosure for receiving the discharged effluent gases.
- Assignee:
- Foster Wheeler Energy Corp., Livingston, NJ
- Patent Number(s):
- US 4682567
- OSTI ID:
- 6030785
- Resource Relation:
- Patent File Date: Filed date 19 May 1986
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
STEAM GENERATORS
FLUIDIZED-BED COMBUSTORS
FLUE GAS
FLUIDIZATION
FLUIDIZED BEDS
FLUIDIZED-BED COMBUSTION
FUEL FEEDING SYSTEMS
FUEL INJECTION SYSTEMS
FURNACES
GAS FLOW
HEAT RECOVERY
HEAT RECOVERY EQUIPMENT
PARTICULATES
SOLID FUELS
BOILERS
CHEMICAL REACTIONS
COMBUSTION
COMBUSTORS
ENERGY RECOVERY
EQUIPMENT
FLUID FLOW
FUEL SYSTEMS
FUELS
GASEOUS WASTES
OXIDATION
PARTICLES
RECOVERY
THERMOCHEMICAL PROCESSES
VAPOR GENERATORS
WASTES
421000* - Engineering- Combustion Systems