SU1180482A1 - Apparatus for coagulation of dust - Google Patents

Abstract

A DEVICE FOR COAGULATION OF DUST, containing two mutually isolated chambers made of different dielectrics, twisting devices, polycyclone electrifiers, made of the same as the corresponding dielectric chambers in the form of coaxially inserted with one, 0 514 13 ct. 13 -.: .. Gg. - a single gap inside one another of cylinders of different diameters installed inside the chambers behind the swirling apparatuses, a mixing chamber with a swirling apparatus and pipelines, characterized in that, in order to increase the efficiency of dust coagulation by obtaining the same maximum static potentials of opposite signs, polycyclone electrolytic cylinders in one chamber are made of three-layer, and their outer layers are made of the same dielectric as the chamber, and the inner e is made of metal, and the cylinders of the polycyclone electrolyzer of the other chamber are made single-layer of i metal, all the metal layers of the cylinders of the polycyclone electrifiers of both chambers are electrically interconnected. oo o oo ISD

Description

The invention relates to the mining industry and can be used in the purification of aspiration air from fine dust in the coal, metallurgical and chemical sectors of the industry.

The purpose of the invention is to increase the efficiency of dust coagulation by obtaining the same maximum maximum potentials of static electricity of opposite signs.

FIG. 1 shows a dust coagulation device, a general sectional view; in fig. 2 - polycyclone electrification with three-layer cylinders, vertical section .; in fig. 3 shows section A-A in FIG. 2; in fig. 4 - polycyclone electrolyzer with single-layer metal cylinders, vertical section; in fig. 5 - section B - B in FIG. four.

The device consists of a supply pipe 1 with a tee 2, a chamber 3 made of a dielectric, for example Plexiglas, electrified under the influence of a dusty air stream by static electricity of a standing mark, and having an inlet swirling device 4, a chamber 5 made of a material such as metal A positive sign charged with static electricity with a twisting device 6. Both chambers at the exit are connected with a tee 7 to a mixing chamber 8, in the initial part of which there is a twisting apparatus 9.

In the chamber 3 behind the swirling apparatus 4 a polycyclone electrizer 10 is installed, the cylinders of which are three-layered, and their outer layers 11 are made of the same dielectric-electrolyzer as chamber 3, and the inner 12 are made of metal, with this metal layers of all cylinders electrically interconnected, and in the chamber 5, behind a twisting apparatus 6, a polycyclone electrolyte 13 is installed, the cylinders 14 of which are made of metal single-layer and are also electrically interconnected.

Polycyclone electrifiers (Figs. 2 and 4) consist of a series of cylinders of different diameters, coaxially inserted one inside the other and fixed with metal studs 15 and bushings 16 so that the concentric gaps between the walls of adjacent cylinders are equal to each other. All the metal layers of the cylinders of polycyclone electrifiers 10 and 13 are interconnected in the device with each other by a high-voltage cable 17 (Fig. 1).

A device for coagulating dust works as follows.

The dusty flow, which is to be cleaned of fine dust, flows through conduit 1 to tee 2, where it is divided into two equal parts, directed through the twisting devices 4 and 6

In chambers 3 and 5. The dust particles of the swirling flow passing through the polycyclone electrolyzer 10 collide with the outer dielectric walls of its cylinders and acquire tribozar and static electricity of negative sign, and the potential of tribozars and the opposite (positive) sign equal to it located on the inner metal layers 12 of the same cylinders and transmitted through the high-voltage cable 17 to the metal cylinders 14 of the polycyclone electrolyte 13 of the chamber 5. Dusty particles of swirling flow a, passing through a polycyclone electrolyte 13, collides with the metal walls of its cylinders 14 and thereby receives a positive electric charge transmitted by it. Thereafter, streams with oppositely charged dust particles enter through the tee 7 into the mixing chamber 8, where they are mixed and twisted in a twisting apparatus 9, at the exit from which intensive mutual contacting and electrical coagulation of dust particles occur. Next, the stream is sent to the usual

5 a mechanical dust separator for cleaning air from dust particles enlarged in a dust coagulation device.

The efficiency of using the known device for coagulating dust with two chambers that have inside polycyclone electrifiers made of different dielectrics is insufficient, since the latter, for example plexiglass, are electrified from the effect of dust flow by static of dissimilar signs of dissimilar signs.

The use in one of the chambers of a device for coagulating dust of the proposed polycyclone electrolyzer with three-layer cylinders, the outer layers of which are made of a dielectric with the smallest

0 by the dielectric constant of the positive magnitude electrified from the dust flow by static electricity, and the inner layer is made of metal, and the potential applied to the inner metal layers is the potential of the same positive sign transmitted by the high voltage cable of the other camera to the single-layer cylinders of the polycyclone electrolyzer for contact charge of dust

0 particles allows one to obtain the same maximum maximum potentials of static electricity of different signs. This, in turn, contributes to the intensive mutual contacting of oppositely charged dust particles, their coarsening, effective electrostatic coagulation and subsequent trapping in mechanical dust collectors.

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FIG. 2

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FIG 5

Claims (1)

DEVICE FOR COAGULATION OF DUST, containing two mutually insulated chambers made of different dielectrics, twisting devices, polycyclone electricizers made of the same as the corresponding dielectric chambers in the form of cylinders of different diameters coaxially inserted with the same gap inside each other, installed inside the chambers behind swirling apparatuses, a mixing chamber with a swirling apparatus and pipelines, characterized in that, in order to increase the efficiency of dust coagulation by obtaining one In terms of the maximum maximum potentials of static electricity of opposite signs, the cylinders of the polycyclone electricizer in one chamber are made three-layer, their outer layers made of the same dielectric as the chamber, and the inner layers made of metal, and the cylinders of the polycyclone electricizer of the other chamber made of single-layer metal, moreover, all the metal layers of the cylinders of the polycyclone electricizers of both chambers are electrically connected. Figure 1 I 180482