SU1230694A1 - Electric dust concentrator - Google Patents

Description

The invention relates to the cleaning of dust emissions from mining enterprises and can be used to clean the air from bentonite and lime dust in charge preparation shops.

The purpose of the invention is to increase the efficiency of dust collection and reduce the energy costs for it by sharing the transverse and longitudinal corona floor and removing clean air and the accumulated dust layer during the movement of the cleaned air stream.

FIG. 1 shows an electric hum concentrator, a longitudinal section; in fig. 2 is a section A-A in FIG. one; in fig. 3 is a section BB in FIG. one; in fig. 4 — node I in FIG. one.

The electropod concentrator consists of a vertical cylindrical corpus 1, a supply gas duct 2, its owner is a central electrode with a lamellar corona element 3 with fixed points inside. In the course of the flow of the stream being cleaned, at some distance from each other, are located the suction boxes 4, which have cleaned air intake ports 5 and a clean air discharge pipe 6 with a gate 7. At the bottom of the housing .1 there is a gas flue 8 for dust air removal. The coaxial housing 1 on the insulators 9, placed in the insulator box 10, is suspended by a collecting electrode 11, provided with piezoelectric openings 12.

Electroconcentrator works as follows.

A high voltage (50 - 80 kV) is applied to the collecting electrode 11 from a high-voltage power source. After supplying the dusty air, the dust particles, entering the corona discharge area, are charged and under the action of the Coulomb force begin to be transported to the precipitation electrode 11. The initial velocity of the stream being cleaned is 20-26 m / s. As the air flow moves, its speed decreases due to the removal of a part of air with a dust accumulated layer through dust collecting holes 12 into the cavity of the precipitating electrode 11 and the taking of a part of purified air through the intake ports 5. The speed decreases stepwise depending on the amount of sucked air through the duct 4, but it should not decrease less than 6–8 m / s, since its further decrease may lead to deposition of dust deposited on the precipitation electrode. The accumulated dust-air concentrate through the duct 8 is directed to a high-efficiency standard dust collector or back to the technology.

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Compiled by A, Tarasov Editor N, G ovvat Tekhred L. Serdyukov and Proofreader A. Obruchar

Order 2477/12

Circulation 514Subscribe

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow,, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Claims (3)

1. ELECTRICAL DUST CONCENTRATOR containing a vertical cylindrical housing, a precipitation electrode made in the form of an inverted cup coaxially mounted in the housing with holes in the side wall and forming an annular chamber with the housing, corona electrodes, supply and exhaust ducts connected to the housing, and a direct current source high voltage, characterized in that, in order to increase the efficiency of dust collection and reduce energy costs due to the joint use of transverse th prodolnogo.polya and corona discharge electrodes are fixed on the inner surface of the housing in an annular chamber of a concentric circle around the precipitation electrode and are connected together with the housing to the same pole of the current source. 2. Electro-dust concentrator according to ri. 1, characterized in that, in order to remove clean air and accumulated dust layer in the direction of the cleaned air _{from the} stream, it is equipped with annular boxes of suction of cleaned air placed on the housing along its height and connected by windows made in the side wall of the housing with a ring camera. 3. Electro-dust concentrator according to p. 1 and 2, characterized in that the corona electrodes are located opposite the case windows and are made in the form of stacks of vertical plates with fixed discharge points directed towards the precipitation electrode. SU,. „1230694