Method of removing aerosols by the radiation effect

Details Method of removing aerosols by the radiation effect Method of removing aerosols by the radiation effect

1994-07-11

1995-12-19

Chiesa, Richard L.

Gas separation: processes

Electric or electrostatic field

And nonelectrical separation of fluid mixture

55279, 95 78, 96 16, 96 66, 250424, 422 4, 422 22, B03C 343

Patent

active

054765382

ABSTRACT:
The present invention is directed to a method of removing aerosols using a radiation effect. Specifically, the method applies a dc current in a cell between a porous electrode exposed to radiation and a porous electrode shielded from radiation; allows the aerosol-containing gas to flow in the cell from the exposed electrode to the shielded electrode and exposing the gas to radiation so that streams of positive and negative ions are formed by radiation-induced ionization; causes the positive and negative ions to collide with the aerosol particles in the cell to form charged aerosol particles; subsequently passes the charged aerosol particles through the shielded electrode so that the aerosol particles electrified with positive ions are deposited or trapped on the shielded electrode if the latter has a negative polarity or that the aerosol particles electrified with negative ions are deposited or trapped on the shielded electrode if the latter has a positive polarity; thereby generates charged aerosol particles of a single polarity in the area just downstream of the shielded electrode as a result of collisions with large quantities of ions that have been electrified to the same single polarity as that of the shielded electrode; and then either deposits the charged aerosol particles of a single polarity on the surface of a substance by an electrostatic force or traps the charged aerosol particles of a single polarity on an electrode or a filter. The method is capable of removing the aerosol particles with an extremely high efficiency.

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patent: 4750917 (1988-06-01), Fujii
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