Contractor/filter improvements
The patent describes an improved contractor/filter arrangement for removing particulate contaminants from a gaseous stream. It includes a housing having a substantially vertically oriented granular material retention member with upstream and downstream faces, a substantially vertically oriented microporous gas filter element, wherein the retention member and the filter element are spaced apart to provide a zone for the passage of granular material there-through. The housing further includes a gas inlet means, a gas outlet means, and means for moving a body of granular material through the zone. A gaseous stream containing particulate contaminants passes through the gas inlet means as well as through the upstream face of the granular material retention member, passing through the retention member, the body of granular material, the microporous gas filter element, exiting out of the gas outlet means. Disposed on the upstream face of the filter element is a cover screen which isolates the filter element from contact with the moving granular bed and collects a portion of the particulates so as to form a dust cake having openings small enough to exclude the granular material, yet large enough to receive the dust particles.
- Assignee:
- Dept. of Energy, Washington, DC
- Patent Number(s):
- US 4880608; A
- Application Number:
- CNN: AC33-83PC60262; PPN: US 7-213798A
- OSTI ID:
- 6969504
- Country of Publication:
- United States
- Language:
- English
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200202* -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR FILTERS
AIR POLLUTION ABATEMENT
AIR POLLUTION CONTROL
AIR POLLUTION MONITORS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CATALYTIC EFFECTS
CHALCOGENIDES
CONTROL
COPPER COMPOUNDS
COPPER OXIDES
DESIGN
DUSTS
EQUIPMENT
FILTERS
FLUE GAS
GASEOUS WASTES
MEASURING INSTRUMENTS
MONITORS
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PARTICULATES
POLLUTION ABATEMENT
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
POROSITY
REMOVAL
TRANSITION ELEMENT COMPOUNDS
WASTES