Gas separation: processes – Electric or electrostatic field – Pulsing or time-varying electric field
Patent
1996-05-23
1997-02-11
Chiesa, Richard L.
Gas separation: processes
Electric or electrostatic field
Pulsing or time-varying electric field
2041573, B03C 366
Patent
active
056016336
ABSTRACT:
Electrical method for removing ecologically noxious substances from gases which includes an electrical precipitator having a reaction chamber through which a stream of the gases to be cleaned passes, and which includes an elongated electrode extending into said reaction chamber for producing a corona discharge within the chamber. The method of the invention includes a multi-stage Fitch generator connected to the electrode which produces a high level pulsating voltage superimposed on a constant direct current voltage. The pulsating voltage causes the electrode to produce the corona effect in the chamber, and the constant direct current voltage sets up an electrostatic field which removes unwanted products of the corona discharge from the gas stream passing through the chamber. The Fitch generator is adapted to provide pulsating voltages of sufficient amplitude and steepness to produce a high density, high energy corona discharge within the chamber. In this application, the Fitch generator allows the method to operate for long periods of time without consuming excessive amounts of electricity.
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Ponizovsky Aleksander Z.
Ponizovsky Lazar Z.
Potapov Viktor A.
Shvedchikov Adolf P.
Chiesa Richard L.
Finkel Robert Louis
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