KR20170000941A - Collecting Electrode Washing Equipment And Wet Electrostatic Precipitator Using The Same - Google Patents

Collecting Electrode Washing Equipment And Wet Electrostatic Precipitator Using The Same Download PDF

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Publication number
KR20170000941A
KR20170000941A KR1020150090183A KR20150090183A KR20170000941A KR 20170000941 A KR20170000941 A KR 20170000941A KR 1020150090183 A KR1020150090183 A KR 1020150090183A KR 20150090183 A KR20150090183 A KR 20150090183A KR 20170000941 A KR20170000941 A KR 20170000941A
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South Korea
Prior art keywords
dust collecting
collecting plate
washing water
dust
washing
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KR1020150090183A
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Korean (ko)
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KR101867373B1 (en
Inventor
정상현
심성훈
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한국기계연구원
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Priority to KR1020150090183A priority Critical patent/KR101867373B1/en
Publication of KR20170000941A publication Critical patent/KR20170000941A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/74—Cleaning the electrodes
    • B03C3/78—Cleaning the electrodes by washing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02—Plant or installations having external electricity supply
    • B03C3/16—Plant or installations having external electricity supply wet type

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collecting apparatus and a wet electrostatic precipitator having the dust collecting apparatus. More particularly, the present invention relates to a dust collecting apparatus, A dust collecting plate cleaning apparatus and a wet electrostatic precipitator having the same.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collecting apparatus and a wet electrostatic precipitator having the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dust collecting apparatus and a wet electrostatic precipitator having the dust collecting apparatus. More particularly, the present invention relates to a dust collecting apparatus, A dust collecting plate cleaning apparatus and a wet electrostatic precipitator having the same.

Generally, a dust collecting apparatus is an air purifying apparatus that collects dust by sucking dust air, purifies it with clean air, and discharges it to the outside.

The electrostatic precipitator, which is one type of dust collecting device, is composed of a dust collecting plate and a discharge electrode, and a discharge electrode is disposed between the collecting plates at regular intervals. The dust collecting principle of the electrostatic precipitator is generally such that when a high voltage is applied to the discharge electrode, a corona discharge is generated. The generated electric charge moves from the discharge electrode to the earth electrode (dust collecting plate), and combines with air to electrically connect the space between the discharge electrode and the earth electrode Ionize. When the dust is introduced into the ionized air, the ionized air and the dust are combined to charge the dust. The charged dust moves to the surface of the dust collecting plate by the Coulomb force generated in the direction of the dust collecting plate in the electric field It is collected by being attached to the dust collecting plate.

At this time, depending on the method of cleaning the dust attached to the dust collecting plate, it is classified into dry type and wet type. The dry electrostatic precipitator is a method of dropping the attached dust by applying a shock caused by the rapping (tapping the dust collector with a hammer) to the dust collector. However, when the resistance of the dust is large, there is a problem that the dust collecting performance is deteriorated due to the high adhesion, which not only can not easily be removed from the dust collecting plate, but also causes a problem of reversing from the dust collecting plate to the discharge electrode.

On the other hand, a wet electrostatic precipitator has been developed in order to overcome the disadvantages of such a dry electrostatic precipitator and adopts a method of supplying water to the surface of the dust collecting electrode by intermittent or continuous method. The method of continuously cleaning the dust collecting plate while blocking the contamination of the dust collecting plate by forming a water film continuously on the dual dust collecting plate is very useful for treating particulates having high specific resistance and high aging hardenability.

A related art is disclosed in Korean Patent Laid-Open Publication No. 2010-0065693 ("Continuous Cleaning Device for Dust Collector of Wet Type Electric Dust Collector"), which is shown in Fig. In the prior art, a spraying device capable of spraying a 90-degree radial shape onto the surface of the dust collecting electrode is attached to the washing water pipe, and ultimately a continuous water film is formed on the entire surface of the dust collecting electrode with a minimum washing quantity, To the continuous scrubbing pole cleaning device capable of continuous operation.

However, in the above-described conventional spray-type washing apparatus, a water stream is formed on the surface of the dust collecting pole near the jetting port, and when the jetting port is distant from the jetting port, a water film is not formed or cracked, , Which ultimately leads to a failure to function as a wet electrostatic precipitator.

Korean Patent Publication No. 2010-0065693 ("Continuous Cleaning Device for Dust Poles in Wet Electric Dust Collectors")

SUMMARY OF THE INVENTION It is an object of the present invention to provide a dust-collecting plate cleaning apparatus having an excellent dust-collecting plate cleaning effect by forming a uniform water film on a surface of a dust-collecting plate by overflowing washing water from above the dust- Wet electrostatic precipitator.

According to an embodiment of the present invention, there is provided an apparatus for cleaning a dust collecting plate, comprising: a washing water storage tank installed at an upper portion of the dust collecting plate, And a washing water supply unit for supplying washing water to the washing water storage tank. As the washing water continuously flows into the washing water storage tank from the washing water supply unit, the washing water overflows from the upper part of the dust collecting plate to the lower part The dust on the surface of the dust collecting plate can be removed.

At this time, the washing water storage tank is provided along the longitudinal direction of the dust collecting plate on the upper side of the dust collecting plate, and the washing water flowing in from the washing water supplying unit is uniformly overflowed along the upper longitudinal direction of the dust collecting plate, Can be formed.

The washing water reservoir is formed in a convex shape having a downward cross section orthogonal to the longitudinal direction, and the washing water is stored therein, and a proximal end portion adjacent to the dust collecting plate is spaced apart from the washing water reservoir so that the overflowing washing water flows down to the surface of the dust collecting plate. It can be formed at a position lower than the end.

The washing water storage tank is formed to extend from a proximal end portion close to the dust collecting plate and is convex upward and is inclined downward toward the dust collecting plate so as to guide the overflowing washing water to the surface of the dust collecting plate And a guide guide.

The cleaning water storage space is divided into a space adjacent to the dust collection space and a space adjacent to the dust collection space. The upper portion is located above the upper end of the guide and the lower end is located below the cleaning water storage tank. And a partition plate formed to communicate with the lower space of the spacing space when the washing water is continuously supplied from the washing water supply unit to the spacing space, The water level in the adjacent space can be overflowed along the guide guide as the natural level rises.

The first washing water flow path may be a passage through which the washing water supplied from the washing water supply unit flows into the separated space.

The first cleansing water flow path may have one end communicating with the cleansing water supplying portion and the other end located within the spacing space of the cleansing water reservoir at a position lower than a height of an upper end of the guide.

Meanwhile, the washing water supply unit may be provided inside the washing water storage tank.

In addition, the washing water storage tank is provided at both sides with respect to the dust collecting plate, and may be formed symmetrically with respect to the dust collecting plate.

A cover for connecting the spaced ends of the pair of rinsing water storage tanks; And the pair of rinsing water reservoir and the cover may be integrally formed.

In addition, the washing water supply unit may be formed on the upper part of the dust collecting plate at a predetermined distance from the dust collecting plate, a pipe shape formed along the longitudinal direction of the dust collecting plate, and a single or multiple through holes may be formed to spray the washing water .

At this time, the through holes may be formed in the side surface of the washing water supply unit at predetermined intervals along the longitudinal direction, and the washing water sprayed through the through holes may be supplied to the washing water storage tank provided on the upper side surface of the dust collecting plate.

The washing water supply unit is connected to an extension pipe connected to an external washing water supply device at one end and closed at one end, and a flow control valve for controlling the flow rate of the washing water supplied to the washing water supply unit .

The cleaning water supply unit is disposed between the cleaning water supply unit and the cleaning water reservoir, and has both ends in a cross section orthogonal to the longitudinal direction in the pair of cleaning water reservoirs, Wherein the washing water sprayed from the washing water supply part is supplied into the washing water storage tank along the upper space of the guide film and the water level of the washing water in the washing water storage tank below the guide film is So that it can be overflowed to the dust collecting plate.

The cleaning water supply unit is located in a space between a pair of cleaning water storage tanks adjacent to each other, and the cleaning water supply unit is disposed in a space between the pair of cleaning water storage tanks, The washing water can be supplied to the storage tank.

According to another aspect of the present invention, there is provided a wet electrostatic precipitator including: a dust collecting body having a plurality of dust collecting plates and discharge electrodes arranged in a housing at regular intervals; A dust collecting plate cleaning device provided for each of the dust collecting plates; A waste water collecting tank for collecting waste water discharged from the dust collecting body; And a wastewater purification tank for introducing wastewater from the wastewater collection tank, purifying the wastewater by the rinsing water, and supplying the wastewater to the rinsing water supply unit; . ≪ / RTI >

In the wet electrostatic precipitator according to an embodiment of the present invention, the washing water supplied from an external washing water supply device is connected to each washing water supply portion of the dust-collecting plate washing apparatus, pipe; As shown in FIG.

At this time, the discharge port is located at a lower position than the other position of the bottom of the dust collecting body so as to collect the contaminated washing water flowing down along the surface of the dust collecting plate and discharge it to the waste water collecting tank, And a hopper formed thereon.

In the wet electrostatic precipitator of the present invention, a pair of dust collecting plate cleaning devices are disposed on both sides of the dust collecting plate so that a water film is formed on both sides of the dust collecting plate. In case of a dust collecting plate disposed at both ends of the dust collecting body, A plurality of the dust-collecting plate cleaning apparatuses may be provided so as to form a water film.

The wet electrostatic precipitator of the present invention comprises a plurality of modules in which a plurality of the dust collecting bodies are arranged in a vertical direction or a horizontal direction in a single outer housing and the waste water discharged from each of the dust collecting bodies is introduced, And one waste water discharge pipe for discharging the waste water to the tank.

Conventionally, there has been a problem that the water film formed on the surface of the dust collecting plate is cracked by using a cleaning device of the spraying type. However, in the dust collecting plate washing apparatus according to an embodiment of the present invention, the washing water storage tank is provided along the width direction of the dust collecting plate, Since the washing water in the water storage tank is configured to overflow to the surface of the dust collecting plate, a uniform water film can be formed on the surface of the dust collecting plate.

In addition, the washing water storage tank further comprises a washing water guiding guide formed at a proximal end portion close to the dust collecting plate, so that the washing water overflowing the dust collecting plate is guided so as to smoothly flow down to the surface of the dust collecting plate. There is an advantage to settle.

In addition, the dust-collecting plate cleaning apparatus according to an embodiment of the present invention further includes a guide film, whereby washing water sprayed from the washing water supply unit flows into the upper region of the guide membrane, The washing water can be uniformly overflowed along the width direction on the upper surface of the dust collecting plate because the washing water is continuously supplied because the washing water is not supplied directly.

In addition, since the wet electrostatic precipitator according to the embodiment of the present invention is provided with the dust-collecting plate cleaning device on the dust collecting body, a uniform water film is formed on the surface of the dust collecting plate. Therefore, dust adhered to the surface of the dust- Since the adsorbent is adsorbed on the water film and flows down, the dust collecting plate can be always kept clean.

Particularly, although dust having a large resistance and high adhesion is not easily removed by a dry electrostatic precipitator, there is a problem that dust collection efficiency is lowered. However, since dust with such a large resistance is easily removed, have.

1 is a conceptual view of a conventional continuous cleaning device for a dust collecting pole.
2 is a perspective view illustrating a dust-collecting plate cleaning apparatus according to a first embodiment of the present invention;
3 is a perspective view showing a dust-collecting plate cleaning apparatus according to a first embodiment of the present invention.
4 is a sectional view taken along the line AA 'of FIG. 2;
5 is a cross-sectional view (AA 'sectional view of FIG. 2) showing a dust-collecting plate cleaning apparatus according to a second embodiment of the present invention.
6 is a cross-sectional view (AA 'sectional view in FIG. 2) showing the dust-plate cleaning apparatus according to the third embodiment of the present invention.
7 is a cross-sectional view (AA 'sectional view of FIG. 2) showing a dust-collecting plate cleaning apparatus according to a fourth embodiment of the present invention.
8 is a cross-sectional view (AA 'sectional view of FIG. 2) showing the dust-plate cleaning apparatus according to the fifth embodiment of the present invention.
FIG. 9 is a cross-sectional view (AA 'sectional view in FIG. 2) showing the dust-collecting plate cleaning apparatus according to the sixth embodiment of the present invention.
10 is a cross-sectional view (AA 'sectional view in FIG. 2) showing the dust-collecting plate cleaning apparatus according to the seventh embodiment of the present invention.
11 is a schematic structural view (single module) showing a wet electrostatic precipitator according to an embodiment of the present invention;
12 is a perspective view illustrating a dust collecting body and a dust-collecting plate cleaning apparatus according to an embodiment of the present invention.
FIG. 13 is a partial perspective view showing the discharge electrode and the dust collecting plate of FIG. 12; FIG.
14 is a sectional view taken along the line BB 'in Fig. 12;
15 is a partially enlarged view of Fig.
16 is a schematic structural view (multiple modules) showing a wet electrostatic precipitator having a plurality of dust collecting bodies according to an embodiment of the present invention.

Hereinafter, the technical idea of the present invention will be described more specifically with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the technical concept of the present invention, are incorporated in and constitute a part of the specification, and are not intended to limit the scope of the present invention.

In the present specification, the same or similar reference numerals are given to the same or similar components in different embodiments, and the description thereof is replaced with the first explanation. As used herein, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise.

Example 1 (Basic type)

FIG. 2 is a perspective view illustrating a dust-collecting plate cleaning apparatus according to a first embodiment of the present invention, FIG. 3 is a perspective view illustrating a dust- .

As shown in FIG. 1, the dust-collecting plate washing apparatus according to the first embodiment of the present invention mainly comprises a washing water storage tank 10 and a washing water supplying unit 20.

The cleansing water storage tank 10 is filled with the cleansing water, and is stored on the dust collecting plate. The cleaning water supply unit 20 serves to supply cleaning water to the cleaning water storage tank 10.

At this time, as the washing water continuously flows into the washing water storage tank 10 from the washing water supply unit 20, the washing water stored in the washing water storage tank 10 overflows and flows down from the upper part of the collecting plate to the lower part, To be removed.

At this time, as shown in the drawing, it is preferable that the washing water storage tank 10 is provided along the longitudinal direction of the dust collecting plate on the upper side surface of the dust collecting plate. Therefore, the washing water flowing from the washing water supply unit 20 can uniformly overflow along the upper longitudinal direction of the dust collecting plate and flow down from the upper part of the collecting plate to the lower part, have.

Conventionally, there is a problem that the water film formed on the surface of the dust collecting plate is cracked by using the cleaning device of the spraying type. However, the present invention can form the water film evenly on the surface of the dust collecting plate by using the overflow method.

Specifically, as shown in FIG. 4, the washing water storage tank 10 has a cross section orthogonal to the longitudinal direction formed in a downward convex shape, and an upper portion is opened, so that the washing water is stored therein. In addition, a proximal end portion (one end portion) 10a close to the dust collecting plate C is formed at a lower position than the spacing end (other end portion) 10b so that the overflowed washing water can flow down to the surface of the dust collecting plate C. That is, the washing water storage tank 10 may be overflowed to the surface of the dust collecting plate C as the water level of the washing water is increased only if the height of the wall surface adjacent to the dust collecting plate C is lower than the height of the wall surface. It should be noted that the position of the proximal end 10a of the washing water storage tank 10 should be located below the height of the upper end of the dust collecting plate C.

4, the washing water storage tank 10 is formed so as to extend from the proximal end portion 10a close to the dust collecting plate and to be convex upward and to be inclined downward toward the dust collecting plate, And a guide guide (11) for guiding the washing water to the surface of the dust collecting plate. At this time, the washing water storage tank 10 and the guide guide 11 may be integrally formed, and it is more preferable that the upper end of the connecting portion where the washing water overflows forms a curved surface.

The washing water storage tank 10 further includes a washing water guide 11 formed at the proximal end portion 10a so that the washing water overflowing the dust collecting plate C flows smoothly to the surface of the dust collecting plate C, . Therefore, there is an advantage that a water film having a constant thickness can be formed on the surface of the dust collecting plate (C).

At this time, it is preferable that the end portion of the guide guide 11 is formed to be finely spaced from the surface of the dust collecting plate C. That is, since the spacing between the end of the guide and the surface of the dust collecting plate is an important factor that determines the thickness of the water film formed on the surface of the dust collecting plate, it is preferable to design the water film at appropriate intervals to form a uniform water film without cracking .

The washing water storage tank 10 is provided on both sides of the dust collecting plate C and is symmetrically formed with respect to the dust collecting plate C so that both surfaces of the dust collecting plate C can be cleaned . At this time, each of the spacing end portions 10b of the pair of washing water storage tanks 10 may be connected to the cover 12, and the washing water storage tank 10 and the cover 12 may be integrally formed.

 As shown in the drawing, the washing water supply unit 20 is provided on the dust collecting plate C at a predetermined distance from the upper end of the dust collecting plate C and is disposed along the longitudinal direction of the dust collecting plate C, And is in the form of a pipe. Accordingly, the washing water is introduced into the inside of the pipe shape, and the single or plural through holes 21 are formed so that the inflowing washing water is sprayed.

Specifically, the through holes 21 are formed in the side surface of the pipe-shaped rinse water supply unit 20, and are formed at regular intervals along the longitudinal direction, whereby the rinsing water is sprayed through the through holes 21 as shown by the arrows And may be supplied to the washing water storage tank 10 provided on the upper side of the dust collecting plate C.

At this time, as shown in Figs. 2 and 3, it is preferable that the rinse water supply portion 20 is located in the cover 12. [ In addition, one end of the washing water supply unit 20 is closed and the other end is in communication with the extension pipe 22. The extension pipe 22 is formed to extend from the other end of the washing water supply unit 20 to the outside of the cover 12 and is connected to the drain pipe 22 through which the washing water is supplied from the washing water supply device (not shown) to be. At this time, it is preferable that a flow control valve 23 is further provided on the extension pipe 22 in order to control the flow rate of the washing water flowing into the washing water supply unit 20.

- Example 2

Hereinafter, a dust-collecting plate cleaning apparatus according to a second embodiment of the present invention will be described with reference to FIG. The washing water storage tank 10 and the washing water supply unit 20 are provided in the same manner as the first embodiment described above, but the partition plate 30 is further provided as shown in the figure. Therefore, the description of the second embodiment of the present invention will be described in detail only for the configuration different from the first embodiment, and a description of the duplicated configuration will be omitted.

The partition plate 30 is provided to divide the inside space of the washing water storage tank 10 and is vertically provided so that the inside space of the washing water storage tank 10 is divided into a proximity space and a spaced space close to the dust collection plate, The upper end portion is located above the upper end of the guide and the lower end portion is located in the lower region of the washing water storage tank 10 so that the lower region of the space is communicated with the adjacent space.

At this time, as shown in the drawing, the washing water flows into the spacing space from the washing water supply part 20 provided on the upper part of the dust collecting plate. When the washing water is continuously supplied, the washing water flows into the lower area of the spacing space, The overflow to the surface of the dust collecting plate follows the guide guide as the water level in the filter increases.

That is, the second embodiment of the present invention further includes a partition plate 30 to divide the washing water storage tank 10 into a proximate space and a spaced space, thereby naturally rising as the washing water is supplied to the lower space of the adjacent space. It maintains a uniform water level and has an advantage of overflowing evenly.

- Example 3

Hereinafter, a dust-collecting plate cleaning apparatus according to a third embodiment of the present invention will be described with reference to FIG. As shown in the drawing, the dust-collecting plate cleaning apparatus according to the third embodiment of the present invention includes the washing water storage tank 10, the washing water supply unit 20, and the partition plate 30 in the same manner as the second embodiment, And a first rinse water flow path 40 is further included.

The first washing water flow passage 40 is a passage through which the washing water supplied from the washing water supplying section 20 flows into the spacing space, and may be shaped like a small pipe.

At this time, one end of the first washing water flow passage 40 may communicate with the washing water supply portion 20, and may be formed in the same number as the through holes communicated with the through holes of the washing water supply portion 20 . And the other end may be positioned on the space separating the washing water storage tank 10 so that the washing water can flow into the space.

That is, in the third embodiment of the present invention, the first washing water flow passage 40 is further provided so that the washing water sprayed from the through hole of the washing water supply portion 20 is smoothly supplied to the spacing space, Can be prevented from flowing.

- Example 4

Hereinafter, a dust collecting plate cleaning apparatus according to a fourth embodiment of the present invention will be described with reference to FIG. As shown in the figure, the fourth embodiment of the present invention is very similar to the third embodiment described above. The other end of the first washing water flow path 40 is located inside the spacing space of the washing water storage tank 10, At a position lower than the height of the upper end of the guide plate.

Therefore, the inflow of the washing water into the adjacent space can be more completely blocked, so that the water surface in the adjacent space is kept flat and uniformly overflows.

- Example 5

Hereinafter, a dust-collecting plate cleaning apparatus according to a fifth embodiment of the present invention will be described with reference to FIG. As shown in the figure, the fifth embodiment of the present invention has a structure in which a guide membrane 50 is further provided in the washing water storage tank 10 and the washing water supplying unit 20, as in the first embodiment described above.

The guide film 50 is provided between the washing water supply unit 20 and the proximal end 10a of the pair of washing water storage tanks 10 and has both ends of the guide film 50 on the cross section orthogonal to the longitudinal direction And is positioned in a pair of the rinsing water storage tanks (10) below the position of the upper end of the guide.

The operation of the dust collecting plate cleaning apparatus provided with the guide film 50 will be described in detail with reference to the drawings.

First, the washing water flowing into the washing water supplying unit 20 is sprayed to both sides through the through holes 21 formed at regular intervals in the washing water supplying unit 20. [ At this time, the sprayed washing water is supplied into the washing water storage tank 10 along the upper space of the guide film 50. As the washing water is continuously supplied, the washing water in the washing water storage tank 10 under the guide film 50 is naturally raised and overflows to the dust collecting plate C. At this time, since the washing water is not directly supplied to a part of the washing water storage tank 10 located below the guide film 50, the water surface is evenly formed in this area, There is an advantage that it can be more uniformly overflowed.

- Example 6

Hereinafter, a dust-collecting plate cleaning apparatus according to a sixth embodiment of the present invention will be described with reference to FIG.

In the sixth embodiment of the present invention, when the cleaning water supply unit 20 is in the shape of a pipe provided on the upper part of the dust collecting plate along the longitudinal direction of the dust collecting plate, the cleaning water supply unit 20 is disposed inside the cleaning water storage tank 10 Respectively.

In this case, unlike the other embodiments, the washing water supply portion 20 is provided so as to be positioned in the pair of the washing water storage tanks 10, respectively.

At this time, the washing water supply unit 20 may be in the form of a pipe having a through hole formed therein. In order to form a uniform water surface in the washing water storage tank 10, the washing water supply unit 20 And a plurality of fine through holes may be formed at regular intervals.

However, the shape of the cleaning water supply unit 20 may be variously formed, for example, in order to show that the illustrated figure has the cleaning water supply unit 20 in the cleaning water storage tank 10.

- Example 7

Hereinafter, a dust-collecting plate cleaning apparatus according to a seventh embodiment of the present invention will be described with reference to FIG.

The above-described embodiments describe a unit structure of a dust-collecting plate cleaning apparatus formed on one dust-collecting plate, and a general dust-collecting apparatus includes a plurality of dust-collecting plates spaced apart from each other by a predetermined distance. Accordingly, a pair of the washing water storage tanks 10 are also provided in the same manner as the dust collecting plates.

That is, as shown in the seventh embodiment of the present invention, the washing water supply unit 20 is located in a space between a pair of adjacent washing water storage tanks 10, And the washing water is supplied to the storage tank 10.

In this case, as shown in the drawing, a second cleansing water passage 60 may be further provided which communicates with both sides of the cleansing water supply unit 20. That is, the second washing water flow passage 60 may be configured in the form of a small pipe such that one end thereof communicates with the washing water supply section 20 and the other end communicates with the inside of the washing water storage tank 10. Accordingly, only one cleaning water supply unit 20 may be provided for each of the two cleansing water storage tanks 10.

Various embodiments of the dust-collecting apparatus washing apparatus of the present invention have been described with reference to the drawings. The common basic concept is that the water surface rises as the washing water is continuously supplied into the washing water storage tank 10, thereby causing the washing water to overflow and forming a uniform water film on the surface of the dust collecting plate so as to flow down, It is.

FIG. 11 is a schematic structural view (single module) showing a wet electrostatic precipitator according to an embodiment of the present invention, FIG. 12 is a perspective view showing a dust collecting body and a dust-collecting plate cleaning apparatus according to an embodiment of the present invention, FIG. 14 is a sectional view taken along line BB 'of FIG. 12, and FIG. 15 is a partially enlarged view of FIG.

Hereinafter, a wet electrostatic precipitator provided with the above-described dust-collecting plate cleaning apparatus 100 will be described in detail with reference to the drawings.

As shown in FIG. 11, the wet electrostatic precipitator according to an embodiment of the present invention includes a dust collecting body 200, a dust collecting plate cleaning apparatus 100, a waste water collecting tank 300, and a waste water purifying tank 400.

The dust collecting body 200 will be described first with reference to FIGS. The dust collecting body 200 has a structure in which a plurality of dust collecting plates 210 and a plurality of discharge electrodes 220 are alternately arranged at a predetermined interval in a single housing. When air containing dust is actually introduced, dust is removed It is a device that plays a role.

Specifically, the dust collecting plate 210 is provided at a predetermined interval in the form of a flat plate (which may be in the form of a flat plate having a curved shape). The dust collecting plate 210 is passed through four corners of the dust collecting plate 210 All the collecting plates 210 are electrically connected.

At this time, a dust collecting plate spacing member (not shown) is inserted into the dust collecting plate fixing rods 211 so that the plurality of dust collecting plates 210 are spaced apart from each other by a predetermined distance. The dust collecting plate spacing members 211, And is sandwiched between the respective dust collecting plates 210.

The discharge electrode 220 is in the form of a flat plate having sharp protruding edges of various shapes and the discharge electrode 220 is positioned in parallel with the dust collecting plate 210 at the center between the respective dust collecting plates 210 and the collecting plate 210 . Like the dust collecting plate 210, the discharge electrode fixing rods 221 penetrate the vicinity of the four corners of the plurality of discharge electrodes 220 to electrically connect all the discharge electrodes 220, and the discharge electrode fixing rods 221 also include a plurality of (Not shown) is interposed between the discharge electrodes 220 so as to keep the discharge electrodes 220 spaced apart from each other by a predetermined distance.

The discharge electrode 220 and the dust collecting plate 210 must be separated from each other so that the discharge electrode 220 and the dust collecting plate 210 are fixed to the single housing 230. Therefore, ) Are electrically isolated. At this time, it is preferable that the material of the housing 230 is made of a conductor having the same material or material as that of the dust collecting plate 210.

When a high voltage is applied from the high voltage generator to the discharge electrode 220, a corona discharge occurs in the protrusion of the discharge electrode 220. At this time, a large amount of electrons move toward the dust-collecting plate 210, and air molecules between the discharge electrode 220 and the dust-collecting plate 210 are combined with electrons and ionized. At this time, when the air containing the dust flows into the space between the discharge electrode 220 and the dust collecting plate 210, the dust is electrically charged due to the combination of the ionized air molecules and the dust. Accordingly, the dust in the air is collected in the dust collecting plate 210 by the principle that the charged dust is applied to the surface of the dust collecting plate 210 due to the action of the electric curling long between the charged dust particles and the grounded dust collecting plate 210.

The wet electrostatic precipitator according to an embodiment of the present invention is provided with a dust collecting apparatus 100 for removing dust adhering to the surface of the dust collecting plate 210 through the above process.

11, 12, and 14, a plurality of dust-collecting plate cleaning apparatuses 100 are installed on the plurality of dust-collecting plates 210, respectively. At this time, the dust-collecting plate cleaning apparatus 100 shown in the drawing is a schematic device, and it is needless to say that it can be formed in any one of the above-mentioned various embodiments.

12, when a plurality of dust-collecting plate cleaning apparatuses 100 are provided, it is preferable that a single number of washing water supply pipes 250 are further provided. The cleansing water supply pipe 250 is connected to a cleansing water supply device (not shown) provided outside and supplies cleansing water to each cleansing water supply unit of the dust- More specifically, the rinse water supply pipe 250 is connected to the extension pipes 22 communicating with the respective rinse water supply portions.

In addition, as shown in FIG. 14, it is preferable that a hopper 240 is provided at the bottom of the dust collecting body. The hopper 240 has a shape in which the cross-sectional area becomes smaller toward the lower side so as to collect the polluted cleansing water (wastewater) flowing along the surface of the dust collecting plate and discharge it to the waste water collecting tank. The discharge port is located at a lower position than the other position of the bottom surface, and the discharge direction may be formed in the downward direction or the lateral direction. 14 (a), and may be formed to be inclined in one direction as shown in FIG. 14 (b). Further, in the drawing, the discharge direction of the wastewater may be discharged in the lower direction or in the lateral direction as well. That is, the shape of the hopper 240 serves to collect the wastewater flowing down to the bottom of the dust collecting body into one place, and the present invention is not limited to the illustrated form.

On the other hand, as shown in FIG. 15, in the case of the dust collecting plate 210 at one end of the dust collecting body 200, the shape of the dust collecting plate washing apparatus 100 is slightly different. The dust collecting plate 210 except the dust collecting plates 210 at both ends is provided with a pair of dust collecting plate cleaning devices 100 around the collecting plate 210 so that a water film is formed on both sides of the collecting plate 210, In the case of the dust collecting plate 210 located at both ends of the dust collecting plate 200, a plurality of dust collecting plate cleaning apparatuses 100 are provided so that a water film is formed only on the inner side of the dust collecting plate 210. Accordingly, the dust-collecting plate cleaning apparatus 100 on the outer side of the dust-collecting plate 210 is formed in a structure in which the wall W is closed.

14 and 15, since a plurality of dust-plate cleaning apparatuses 100 are provided on the dust-collecting body 200, a cleaning apparatus support unit 260 for supporting the plurality of dust- Respectively. Here, the cleaning device support portion 260 and the housing 230 may be integrally formed. 15, a groove through which the dust collecting plate 210 is inserted is formed in the cleaning device supporting part 260 so that a part of the upper part of the dust collecting plate 210 is located in the dust collecting plate cleaning device 100, A clearance is formed in the dust collecting plate 210 so that the washing water can flow down to the dust collecting plate 210.

As described above, since the dust-collecting plate cleaning apparatus 100 having the above-described structure is provided on the dust-collecting body 200, a water film is formed on the surface of the dust-collecting plate 210, The attached dust is adsorbed on the water film and flows down, so that the dust collecting plate 210 can be always kept clean.

Particularly, there is a problem that dust having a very large electrical resistivity is not easily exhausted from the dust collecting plate when it is collected by a dry electrostatic precipitator, and there is a problem that the performance of the dust precipitator is deteriorated due to occurrence of reversal etc. However, So that the dust collection efficiency is greatly increased.

The contaminated cleaning water (wastewater) discharged from the dust collecting body 200 by the above-described process flows into the waste water collecting tank 300 and is collected (refer to FIG. 11).

Thereafter, the wastewater flows into the wastewater purification tank 400 from the wastewater collection tank 300, and the wastewater is purified in the wastewater purification tank 400. At this time, since the structure for purifying the wastewater is a well-known technology, a detailed description will be omitted. On the other hand, it is preferable that the purified wastewater is supplied to the rinse water supply unit 20 through the circulation channel and used again as the rinse water. As shown in the drawing, a pump P is provided between the dust collecting body 200, the waste water collecting tank 300, the waste water purifying tank 400 and the dust collecting plate washing apparatus 100 so that the washing water or the waste water can smoothly flow desirable.

FIG. 16 is a schematic view showing a wet electrostatic precipitator having a plurality of dust collecting bodies. 11 is a single-module wet electrostatic precipitator in which the dust collecting body 100 is a single unit, and FIG. 16 shows a wet electrostatic precipitator in a plurality of modules.

The electrostatic precipitator may be treated as a single module depending on the magnitude of the treatment flow, but it may be necessary to have a plurality of electrostatic precipitators having two or more dust collecting bodies. In the case of the electrostatic precipitator having a plurality of modules as described above, it is preferable that a plurality of dust collecting bodies 200 are disposed in the outer housing 500 in a stacked state in the vertical direction or the horizontal direction so as to be integrated. At this time, wastewater discharged from each dust collecting body 200 flows into one wastewater discharge pipe 600, and the wastewater discharged from the wastewater discharge pipe 600 flows through a wastewater collection tank 300 and a wastewater purification tank 400 It is cleansed. At this time, although not shown, when the dust collecting body 200 is disposed in the horizontal direction, the waste water discharging pipe 600 can be disposed between the dust collecting bodies 200. The washing water discharged from the wastewater purification tank 400 can be distributed to the plurality of dust-plate cleaning apparatuses 100 provided in the respective dust collecting bodies 100 through the flow control valve 700 in one flow path.

On the other hand, in the case of a plurality of modules, it is very advantageous that the shape of the hopper 240 is formed as shown in Fig. When the plurality of dust collecting bodies 200 are provided, the height of the hopper 240 is not sufficient to collect dust. Therefore, it is effective to minimize the area where the hopper 240 is located to increase the dust collecting performance. Therefore, when the hopper 240 is formed as shown in FIG. 14, the dust collecting performance can be improved and it is advantageous to arrange the plurality of dust collecting bodies 200. Also, since the wastewater discharged from each hopper 240 is collected and discharged through one wastewater discharge pipe 600, this also helps improve the collection performance.

As described above, the wet electrostatic precipitator according to the present invention can be formed as a single module, but it can be easily formed into a plurality of modules as needed, so that the wet electrostatic precipitator can be applied even when the process flow rate is large.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

C: Collecting plate
100: Dust-cleaning device
10: Cleaning water storage tank 10a: Proximal end
10b: spacing end 11: guide guide
12: cover
20: cleaning water supply part 21: through hole
22: extension pipe 23: flow control valve
30: partition plate
40: First rinsing water flow path
50: guide membrane
60: Second washing water flow passage
200: dust collecting body 210: dust collecting plate
220: discharge electrode 230: housing
240: hopper 250: rinse water supply pipe
260: Washer support
300: Wastewater collection tank
400: waste water septic tank
500: outer housing
600: waste water discharge pipe
700: Flow control valve

Claims (20)

An apparatus for cleaning a dust collecting plate,
A washing water storage tank provided at an upper portion of the dust collecting plate to receive and store washing water; And
A rinse water supply unit for supplying rinse water to the rinse water storage tank;
, ≪ / RTI >
Wherein the washing water overflows as the washing water continuously flows from the washing water supply unit to the washing water storage tank and flows down from the upper part of the dust collecting plate to the lower part to remove the dust on the surface of the dust collecting plate.
The washing machine according to claim 1,
The washing water flowing from the washing water supply unit is uniformly overflowed along the longitudinal direction of the dust collecting plate to form a water film having a certain thickness as a whole over the surface of the dust collecting plate The dust collecting plate cleaning apparatus comprising:
The washing machine according to claim 1,
A cross section orthogonal to the longitudinal direction is formed in a downward convex shape, the washing water is stored therein,
Wherein a near end portion close to the dust collecting plate is formed at a lower position than the separating end so that the overflowed washing water flows down to the surface of the dust collecting plate.
The washing machine according to claim 1,
A guiding guide formed to extend from a proximal end portion close to the dust collecting plate and being convex upward and inclined downward toward the dust collecting plate to guide the washing water overflowing to the surface of the dust collecting plate;
Further comprising: a dust collecting plate cleaning device for cleaning the dust collecting plate.
5. The method of claim 4,
The cleaning water storage space is divided into a space adjacent to the dust collection space and a space adjacent to the dust collection space. The upper end is located above the upper end of the guide and the lower end is located below the washing water storage tank A partition plate formed to communicate the lower space of the spaced space with the adjacent space;
Further comprising:
Wherein when the washing water is continuously supplied from the washing water supply unit to the spaced space, the washing water flows into the adjacent space and overflows along the guide guide as the water level in the adjacent space naturally rises.
6. The method of claim 5,
A first rinse water flow path that is a passage through which the rinse water supplied from the rinse water supply unit flows into the spaced space;
Further comprising: a dust collecting plate cleaning device for cleaning the dust collecting plate.
7. The washing machine according to claim 6, wherein the first washing-
And the other end is located at a position lower than a height of an upper end of the guide guide, the other end being located inside the spaced space of the washing water storage tank.
The washing machine according to claim 1,
Wherein the washing water is stored in the washing water storage tank.
The washing machine according to claim 1,
Wherein the dust collecting plate is symmetrically formed on both sides of the dust collecting plate with respect to the dust collecting plate.
10. The method of claim 9,
A cover connecting the spaced ends of said pair of rinsing water reservoirs; Further comprising:
Wherein the pair of washing water storage tanks and the cover are integrally formed.
10. The washing machine according to claim 9,
And a plurality of through holes are formed in the upper part of the dust collecting plate to be spaced apart from the dust collecting plate by a predetermined distance and in the form of a pipe formed along the longitudinal direction of the dust collecting plate and in which the washing water is sprayed.
12. The apparatus of claim 11, wherein the through-
Wherein the washing water is supplied to the washing water storage tank provided on the upper side surface of the dust collecting plate, the washing water being formed at regular intervals along the longitudinal direction on the side surface of the washing water supplying unit.
12. The washing machine according to claim 11,
One end is closed and the other end is in communication with an extension pipe connected to an external cleaning water supply device,
Further comprising a flow control valve for regulating a flow rate of the washing water supplied to the washing water supply unit on the extension pipe.
12. The method of claim 11,
A pair of cleaning water reservoirs disposed at both ends in a cross section orthogonal to the longitudinal direction of the washing water reservoir, ;
Further comprising:
The washing water sprayed from the washing water supply part is supplied into the washing water storage tank along the upper space of the guide film and the water level of the washing water inside the washing water storage tank below the guide film is naturally raised and overflows to the dust collecting plate Wherein the dust collecting device is a dust collecting device.
10. The method of claim 9,
The pair of washing water storage tanks are spaced apart from each other by a predetermined distance,
The cleaning water supply unit,
Wherein the cleaning water supply unit is located in a space between a pair of neighboring cleaning water storage tanks and supplies cleaning water to the cleaning water storage tanks on both sides of the cleaning water supply unit.
A dust collecting body in which a plurality of dust collecting plates and discharge electrodes are alternately arranged at a predetermined interval in a housing;
The dust-collecting apparatus according to any one of claims 1 to 14, which is provided for each of the dust-collecting plates.
A waste water collecting tank for collecting waste water discharged from the dust collecting body; And
A wastewater purification tank for introducing wastewater from the wastewater collection tank, purifying the wastewater by the rinsing water, and supplying the wastewater to the rinsing water supply unit;
And a wet electrostatic precipitator.
17. The method of claim 16,
A single washing water supply pipe communicating with each washing water supply unit of the dust collecting plate washing apparatus and supplying washing water supplied from an external washing water supplying apparatus to the washing water supplying unit;
Further comprising a second electrode connected to the second electrode of the wet electrostatic precipitator.
17. The dust collecting apparatus according to claim 16,
A hopper which is provided at a lower portion of the dust collecting plate and collects and discharges polluted cleansing water flowing down along the surface of the dust collecting plate to a lower position than the other position of the bottom surface to discharge the waste water to the waste water collecting tank,
Wherein the wet electrostatic precipitator further comprises:
17. The method of claim 16,
A pair of dust collecting plate cleaning apparatuses are provided on the dust collecting plate so as to form a water film on both sides of the dust collecting plate,
Wherein a plurality of dust-collecting plate cleaning devices are provided on the inner surface of the dust-collecting plate in the case of a dust-collecting plate disposed at both ends of the dust-collecting body.
17. The method of claim 16,
Wherein the plurality of modules are arranged in a vertical or horizontal direction in a single outer housing,
A waste water discharge pipe through which waste water discharged from each of the dust collecting bodies flows into the waste water collecting tank;
Further comprising: a wet electrostatic precipitator.
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