Gas separation: processes – Electric or electrostatic field – With cleaning of collector electrode
Patent
1998-11-25
2000-12-05
Chiesa, Richard L.
Gas separation: processes
Electric or electrostatic field
With cleaning of collector electrode
552823, 55DIG10, 96 28, 96 30, B03C 374
Patent
active
061560995
ABSTRACT:
An electronic dust collector for collecting and removing dust from an air stream uses a corona discharge between a discharge electrode and a dust collection electrode to ionize the dust particles which are then attracted to, and held, on the surface of the negatively charged dust collection electrode. The surface of the dust collection electrode includes a catalyst layer for oxidizing and decomposing the deposited dust thereon. A heater is included in the dust collection electrode for periodic self-cleaning. The application of electricity to the heater is controlled to produce slow moderate temperature elevation during the self-cleaning of the dust collection electrode. This permits stepwise oxidation and decomposition of the dust deposited on the dust collection electrode, thereby cleaning the dust collection electrode by removing the dust on the dust collection electrode while suppressing generation of smoke and odor which would otherwise occur by burning of the dust.
REFERENCES:
patent: 4133652 (1979-01-01), Ishikawa et al.
patent: 4544388 (1985-10-01), Rao et al.
patent: 4871515 (1989-10-01), Reichle et al.
patent: 5290343 (1994-03-01), Morita et al.
Hironaka Yasumasa
Uemura Yoriko
Chiesa Richard L.
Funai Electric Co. Ltd.
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