Gas separation – Means within gas stream for conducting concentrate to collector
Patent
1977-04-21
1978-09-05
Nozick, Bernard
Gas separation
Means within gas stream for conducting concentrate to collector
55105, 55139, 323 22SC, 323 23, 363128, B03C 300
Patent
active
041116690
ABSTRACT:
A controller for selectively energizing actuating coils of rappers of an electrostatic precipitator assembly to impart motion to a portion of the precipitator assembly and remove accumulated material therefrom. The controller intermittently supplies a d.c. potential to a rapper supply bus common to a plurality of rappers of the electrostatic precipitator assembly for time periods each of a predetermined duration. Switching means responsive to the d.c. potential selectively connect an actuating coil of at least one rapper of the plurality of rappers to the rapper supply bus during each of the time periods to energize the actuating coil of at least one rapper with the d.c. potential. In the preferred embodiment, the d.c. potential is supplied by an SCR controlled rectifying means and the switching means each comprise an SCR. Means are provided for selectively varying a time interval between the time periods during which the d.c. potential is supplied to the rapper supply bus so that the rapping intervals may be varied. One or more rapper fields may be connected to a supply bus as desired.
REFERENCES:
patent: 2016531 (1935-10-01), Winkermute
patent: 2858900 (1958-11-01), Foley
patent: 3469371 (1969-09-01), Gelfand
patent: 3504480 (1970-04-01), Copcutt et al.
patent: 3507096 (1970-04-01), Hall et al.
patent: 3577708 (1971-05-01), Drenning et al.
patent: 3873282 (1975-03-01), Finch
patent: 3877896 (1975-04-01), Muskovac
patent: 4008057 (1977-02-01), Gelfand et al.
Brumback Oscar B.
Koppers Company Inc.
Nozick Bernard
Zeh, Jr. Herbert J.
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