Fluidized bed combustor having integral solids separator
A fluidized bed combustor system is described for combusting a particulate fuel comprising: a. a furnace enclosure defining a combustion chamber for burning a particulate fuel in a fluidized state in a fluidizing gas to generate a hot flue gas and having a gas outlet above the bed for passing the hot flue gas from the combustion chamber; b. a flue gas duct disposed downstream of the furnace enclosure having an inlet for receiving the flue gas generated in the combustion chamber; c. separator means for separating particulate solids carried over from the combustion chamber in the flue gas. The separator means comprises an arcuate duct having an inlet opening to the gas outlet of the furnace enclosure for receiving the hot flue gas from the combustion chamber and an outlet spaced from the inlet and interconnected to the inlet by a curvilinear inner wall, a curvilinear outer wall, and a pair of spaced sidewalls extending therebetween. A portion of the curvilinear inner wall is disposed across the inlet to flue gas duct, the portion having openings therein providing a flow area through which a first portion of the hot gas passes from the arcuate duct of the separator means through the inlet to the flue gas duct; and d. solids collection means opening to the outlet of the arcuate duct of the separator means for receiving a second portion of the flue gas together with the particulate solids separated from the first portion of the flue gas passing through the inner wall of the arcuate duct of the separator means.
- Assignee:
- Combustion Engineering, Inc., Windsor, CT
- Patent Number(s):
- US 4640201
- OSTI ID:
- 7039457
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
421000* -- Engineering-- Combustion Systems
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION CONTROL
CHEMICAL REACTIONS
COMBUSTION
COMBUSTION CHAMBERS
COMBUSTORS
CONTROL
DESIGN
DUCTS
EQUIPMENT
FLUE GAS
FLUIDIZED-BED COMBUSTION
FLUIDIZED-BED COMBUSTORS
FUELS
FURNACES
GASEOUS WASTES
INTAKE STRUCTURES
MECHANICAL STRUCTURES
OPERATION
OXIDATION
PARTICLES
PARTICULATES
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
SEPARATION EQUIPMENT
SOLID FUELS
THERMOCHEMICAL PROCESSES
WASTES