Fluidized bed system for removing particulate contaminants from a gaseous stream
This paper discusses a fluidized bed system for removing particulate contaminants from a hot gas stream. It comprises a housing; a fluidized bed zone defined by the housing; a bed of granular media in the fluidized bed zone; means for maintaining fluidization of the granular media in the fluidized bed zone, including means for adding uncontaminated granular media to the bed and removing contaminated media from the bed; means for disposing first hollow, ceramic, barrier filter elements in the fluidized bed zone. The first hollow filter elements each having a porous closed wall and bottom, and an open top communicating with the exterior of the fluidized bed zone, with at least a portion of the first hollow filter elements disposed within the fluidized granular media, and second hollow, ceramic, barrier polishing filter elements in the housing; and means for introducing a gas stream containing particulate contaminants into the fluidized bed zone such that the gas passes through the walls of the hollow filter elements, and is discharged through the open tops, with the particulate contaminants being separated therefrom.
- Assignee:
- Westinghouse Electric Corp., Pittsburgh, PA (USA)
- Patent Number(s):
- US 4973458; A
- Application Number:
- PPN: US 7-351136
- OSTI ID:
- 5215431
- Country of Publication:
- United States
- Language:
- English
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AIR POLLUTION CONTROL
CHEMICAL EFFLUENTS
CHEMICAL WASTES
CONTROL
DESIGN
FILTERS
FILTRATION
FLUIDIZED BEDS
GASEOUS WASTES
NONRADIOACTIVE WASTES
PARTICLES
PARTICULATES
POLLUTION CONTROL
SEPARATION PROCESSES
WASTES