KR940001416B1 - Wet electric dust collector - Google Patents

Abstract

an injector (3) primarily purifying hazardous gas containing dusts etc., fixed weights (15) located individually in thlowest part of discharging electrodes (6) located between the injector (3) and a collecting plates (5), a latticed plate (11) fixing the weights (15) to fixed positions, a porous plate (11) located in the lowest part of the latticed plate (17), injection valves (9) in order to form water-film in the collecting plate (5) and in midair, a demister (12), and a packing layer (13) in order to filter the gases secondarly. This precipitator is characterized by a gas inlet pipe (1) being a ventrui pipe (22), a vortex plate (20) inside of the ventrui pipe (22), and an injector (3') spraying the water curculated from a water-tank (21) continuously.

Description

Bantry type wet electrostatic precipitator

1 is a schematic longitudinal cross-sectional view illustrating the operation of the present invention.

2 is a vertical cross-sectional view of the dust collector of the present invention

Figure 3 is a bottom longitudinal cross-sectional view of the dust collector of the present invention

* Explanation of symbols for main parts of the drawings

1: gas inlet pipe 2,2a: drain pipe

3,3 ': injector 4: washing tower

5: dust collecting plate 6: discharge electrode

7: insulator 8: washing valve

9: injection valve 10: power line

11: perforated plate 12: demister

13 packing layer 14 outlet

15: fixed weight 16: body

17: grid 20: vortex

21: water tank 22: bantry tube

The present invention relates to a dust collector for purifying harmful gas discharged from a chimney such as a factory, and more particularly, a banuri-type wet electrostatic precipitator which is efficiently used to remove high concentrations of dust. It is an improvement of the electrostatic precipitator.

At present, the wet electrostatic precipitator is disclosed in Japanese Utility Model Publication No. 57-70452, but this is simply to remove the dust adhering to the dust collector (dust collecting plate) by intermittently spraying water from the upper side, so that it is not ionized. It is not possible to remove gas and high concentration of dust, and there is no means to cool the incoming hot gas firstly and cool it, so the efficiency of dust collection is reduced and there is no fixing means for electrode or dust plate. There is a risk of an accident due to the shaking of the electrode or the collecting plate.

On the other hand, the present invention is an improvement of the application filed as 91-16880 in order to improve such a problem, in the case of high dust concentration therein vortex the gas flowing into the gas inlet pipe to filter out the high concentration of dust first Centrifuge while passing through the plate and at the same time spray through an injector to remove.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 2 and FIG. 3, in the configuration of the present invention, a gas inlet pipe 1 through which high temperature harmful gas flows is formed at one lower side of the body 16, and is formed to be inclined downwardly and above them. Injector (3) is formed on all sides of the body (16) for the first purification of the hot gas at the same time and at the same time, the discharge port (14) for recycling the water sprayed from the injector (3) is formed on the bottom In the upper part of the injector 3, the porous plate 11 is formed so that the dust and the like are evenly distributed, and the discharge electrode 6 is interposed between the dust collecting plate 5 of the plate-shape downwards in a row. Each of them is formed directly below, and the fixing weight 15 is formed below the discharge electrode 6, the fixing weight 15 is located between the grating plate 17, the gas flowing through the hole of the porous plate 16 Due to the pressure of the discharge electrode (6) And the discharge electrode 6 is straightened, and the hole formed in the porous plate 11 prevents the inflow of gas evenly spreading only to the specific dust collecting plate 5, and at this time, the dust collecting plate 5 is fixed to the lower portion of the discharge electrode 6, the discharge electrode 6 is fixed so that the power can be supplied through the insulator 7 in the upper part of the dust collecting plate (5).

In addition, an injection valve 9 is formed in the upper part of the dust collecting plate 5 to form a water film and a spray phenomenon on the dust collecting plate 5, and the water injected from the injection valve 9 uses purified water and the injection valve ( The upper part of the 9) is formed with a cleaning valve (8) for washing the foreign matter adhering to the dust collecting plate (5), the upper part of the cleaning valve (8), the demister (12) to remove the moisture contained in the purified gas ) Is formed and a packing layer 13 for completely removing moisture is formed on the upper part of the demister 12, and the gas inlet pipe 1 is formed as a venturi pipe 22 so that the vortex is formed therein. The plate 20 is formed so that the gas flowing therein is vortexed to remove the high concentration of dust by centrifugal separation while dispersing it through the injector 3 'by using water circulated in the water tank 21 and high concentration. Regular dust It will allow you to matchulsu.

At this time, (-) power is applied to the discharge electrode 6, (+) power is applied to the dust collecting plate 5, and the moisture removed from the packing layer 13 and the demister 12 is connected to the drain pipe 2a. It will flow down the wall of the body 16 through.

Therefore, the harmful gas flowing into the gas inlet pipe 1 is vortexed and rotated while passing through the venturi pipe 22 to be centrifuged to remove high concentrations of dust and to spray water from the atomizer 3 'at the same time. Because of this, the first filtered gas is subjected to the same process as in the standard wet electrostatic precipitator.

When the above-mentioned process is described in detail, the high concentration of dust that is first filtered is discharged to the outlet 2 together with the dust that is first filtered by dust (particles), etc., due to the water sprayed from the injector (3), and the second filtered harmful. As the gas rises to the washing tower 4, the negative gas is charged due to the negative power generated by the discharge electrode 6, and the harmful gas having the negative charge is collected in the dust collecting plate to which the positive power is applied. 5) to be bonded.

This means that the different poles are pulled together and the same poles are pushed together, and the dust inflow into the gas inlet pipe enters a high pressure, so when these dusts are concentrated only on a specific dust collecting plate, the efficiency of dust collection is reduced. It is possible to improve the efficiency of dust collection by distributing evenly to a plurality of dust collecting plate is formed.

When the noxious gas with negative (-) charge is adhered to the dust collecting plate 5 to which the (+) power is applied, a large amount of water is injected into the dust collecting plate 5 by the washing valve 8 5-6 times a day. The harmful gas adhered to the dust collecting plate (5) is washed, and the dust that is not ionized is removed from the air by being adhered or sprayed on the dust collecting plate while the dust is raised due to the spraying phenomenon and the water film formed on the dust collecting plate. The dust, etc. adhered to the dust collecting plate will immediately flow down due to continuous spraying.

In this way, all of the harmful gases are adhered to the dust collecting plate 5, and only smoke that is harmless to the human body rises.

However, since the smoke contains moisture, moisture is first filtered from the demister 12 and then completely filtered from the packing layer 13 to be discharged to the atmosphere. The demister 12 and the packing layer 13 are removed. Moisture removed from the water flows down through the drain pipe (2a) and the water flowing down the dust collecting plate (5) flows down the wall of the body (16) through the drain pipe (2) formed at the bottom of the dust collecting plate (5) will be.

Therefore, even in the case of high concentration of dust through the banchu tube 22 is first filtered by the centrifugal force, so that the efficiency of the dust collecting plate is not to fall and can be used for a long time without failure.

Claims (1)

Fixing fixed weights 15 and fixed weights respectively formed at the lower end of the discharge electrode 6 formed between the injector 3 and the dust collecting plate 5, which primarily purify the harmful gas containing dust, etc. A spray valve 8 for cleaning the material collected in the dust collecting plate and the porous plate 11 formed on the lower portion of the grating plate 17 and the grating plate 17 and a spraying plate for forming a water film in the air with the dust collecting plate 5. In the well-known standard wet electrostatic precipitator consisting of a valve 9, a demister 12 for removing moisture of the purified gas containing moisture, and a packing layer 13 for secondary filtering thereof, the gas inlet pipe ( 1) is formed by the banchu tube 22, the vortex plate 20 is formed therein, and the injector (3 ') at the top is characterized in that the spray continuously circulating water in the water tank 21 Bantry type wet electrostatic precipitator.