Fiber-rejecting corona discharge electrode and a filtering system employing the discharge electrode
In a system for filtering fibers and particulates from a gas stream, a fiber separator is disposed to remove fibers in gross quantity from the gas stream. A corona charging apparatus is disposed downstream of the fiber separator to impart electric charge to particulates and to fibers that escape removal from the gas stream by the fiber separator. An electrostatic filter medium, which may advantageously be mounted on the cylindrical wall of a drum filter, is disposed downstream of the corona charging apparatus to remove electrically charged particulates and fibers from the gas stream. The corona charging apparatus (20) comprises at least one fiber-rejecting corona discharge electrode. The fiber-rejecting electrode comprises a shielding portion facing upstream and a corona discharge portion facing downstream in the gas stream. The radius of curvature of the shielding portion is greater than the radius of curvature of the corona discharge portion in a plane parallel to the gas stream so that the corona discharge occurs in a region that is shielded from fibers carried by the gas stream.
- Assignee:
- Envirotech Corp
- Patent Number(s):
- US 4266948
- OSTI ID:
- 5899321
- Resource Relation:
- Patent File Date: Filed date 4 Jan 1980
- Country of Publication:
- United States
- Language:
- English
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