SU78371A1 - Electrostatic precipitator for air purification from dust - Google Patents

Description

Electrostatic precipitators with electrodes and irrigation nozzles built into the dust-cleaning chamber are known.

The described electrostatic precipitator differs from the known ones in order to clean the air from fine, hardly wettable dust, a cathode in the upper part of the chamber is made in the form of one or several metal grids, and below it are irrigation nozzles acting as apod, so that the dust particles The passage from the top to the bottom through the cathode is negatively charged and connected below with water droplets sprayed by nozzles having a positive electric charge, and the bottom part of the dust cleaning chamber is made as a sponge. A syringe filter connected to a water collector intended for feeding the nozzles. The dust particles of the air being cleaned, the passage through the cathode, acquire a negative charge of electricity, are displaced with water droplets having a positive charge of electricity, and thus lose their self-contained aerosol state.

In FIG. I-3 schematically shows the device of the described electrostatic precipitator for very hot air from dust.

Exhaust air, pre-cleaned of coarse dust, enters through the duct / into the upper part 2 of the electrostatic precipitator. The air duct / is isolated from the upper part 2 by a dielectric nozzle 3.

The upper part 2 rests on the dielectric juice 4 of the filter housing 5. The lower part of the filter housing 5 is reliably grounded to ground 6. Inside the dielectric 4 on the insulators 7, the cathode 8 is connected through a bus 10 to a high-voltage constant current source 9.

The positive pole of a high-voltage direct current source 9 is grounded by grounding, //.

The anode of this filter are the nozzles 12, the drops of water sprayed by them, as well as the surface of the metal walls of the lower part of the body 5 of the filter, irrigated by the sprayed water.

The cathode 8, pre; 1, is either a few metal grids of

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fine smooth or barbed wire, but with more densely-mounted spines (Fig. 1), or a metal mesh of narrow toothed strips of sheet metal (Fig. 2).

The lower part of the filter chamber consists of inclined metal plates 13, easily removed from the filter chamber for cleaning, and forming a series of inertial louver filters necessary for separating water droplets with dust attached to it from the air being cleaned.

The blades 14 of the upper part of the filter are designed to evenly distribute air over the horizontal section of the filter.

Water, absorbing dust, part. It is cleaned from clean air by inertial-louvre filters and, with some amount of air, 5–20% through slits 14a enters the chamber and the filter and settles to its bottom. The cleaned air from the inter-louvre space of the inertial filters passes into the annular air duct 15 and from there is directed for recirculation to the intake ventilation.

Air from chamber a passes through louvered grilles 16 into another annular duct 17 and from there is discharged through a separate duct to the outside (into the atmosphere). Water from chamber and enters filter 18 and pump 19 is fed under pressure through pipe 20 to nozzles 12.

The water supply is grounded by a common ground 21.

Subject invention

Claims (2)

1. Electrofilter for cleaning air from dust, consisting of a dust-cleaning chamber with electrodes and irrigation nozzles installed in it, characterized in that, in order to clean the air from fine, difficult-to-wet dust, a cathode in the upper part of the chamber is made in the form of one or several metal nets, and below it are irrigation nozzles that act as an anode, so that the dust particles, passing down through the cathode, negatively charge and connect below with drops of water sprayed by nozzles . 2. The form of the electrostatic precipitator according to claim 1, characterized in that the lower part of the dust cleaning chamber is made in the form of a louver filter connected to a water collector intended for feeding the nozzles.  3 FIG. one L. -J (- L)  h) v / 1 (w: w , - VV / "I NW / / 1 f-yy--)%: iJ Ml4MiiH N: K h / 7 No. 78371 I1f ; ll i ff ) F. W  f / f I FIG. 2 No. 78371