Movable, continuously changing, self-charging electrostatic filt

Details Movable, continuously changing, self-charging electrostatic filt Movable, continuously changing, self-charging electrostatic filt

1979-04-09

1980-10-21

Prunner, Kathleen J.

Gas separation

Means within gas stream for conducting concentrate to collector

55103, 55131, 55149, 55155, 55354, 55524, 55528, B03C 310, B01D 4622

Patent

active

042291879

ABSTRACT:
A non-woven, relatively thin filter media is formed of fine denier fibers wherein the media exhibits the characteristics of developing an electrostatic charge in the presence of a substantially dry air stream moving at a speed of at least 200 feet per minute. The fibers are selected from the group containing polyester, nylon, and polypropylene. A length of filter material so formed is moved or passed through an air stream or path containing weld smoke. The moving air causes the unique filter media to become electrostatically charged so that the fine particulate matter from the gaseous stream are removed more effectively than before.

REFERENCES:
patent: 2579440 (1951-12-01), Palmer
patent: 2612966 (1952-10-01), Nicol
patent: 2812038 (1957-11-01), Krueger
patent: 3375638 (1968-04-01), Dungler
patent: 3417552 (1968-12-01), Dyer et al.
patent: 3537238 (1970-11-01), Dungler
patent: 3783588 (1974-01-01), Hudis
patent: 4011067 (1977-03-01), Carey, Jr.
patent: 4153433 (1979-05-01), Kihlstrom
Van Orman, W. T. et al., Self-Charging Electrostatic Air Filters, in Heating, Piping & Air Conditioning, p. 157-163, Jan. 1952.

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