KR102115966B1 - Wet electrostatic precipitator - Google Patents

Abstract

The present invention relates to a wet electrostatic precipitator.
According to an aspect of the present invention, a vertical type dust collecting body having a gas inlet through which a gas to be collected is introduced and a gas outlet through which the collected gas is discharged are formed thereon; A plurality of dust collecting cells installed vertically on the upper side of the dust collecting body; A fog nozzle installed between the gas inlet and a plurality of dust collecting cells; Upper and lower cleaning nozzles installed on the upper and lower sides of the dust collecting cell to spray cleaning liquid toward the dust collecting cells; And a pollutant discharge port installed on the lower side of the vertical body, wherein each of the dust collecting cells has a polygonal flat shape and extends vertically to a hollow dust collecting electrode, and a longitudinal direction inside the dust collecting electrode. A wet electrostatic precipitator comprising a rod-shaped discharge electrode installed along the top and bottom of the discharge electrode fixed to beam-shaped upper and lower mounting members respectively installed at upper and lower portions of the dust collecting electrode. Is disclosed.

Description

Wet electrostatic precipitator {Wet electrostatic precipitator}

The present invention relates to a wet electrostatic precipitator, so that a water film in the dust collecting electrode is formed by droplets of the cleaning solution sprayed through a atomizing nozzle while taking a vertical upstream dust collecting structure, and the discharge electrode is located at a central position of the dust collecting electrode. It relates to a wet electrostatic precipitator configured to obtain an electrostatic precipitating effect and a cleaning effect satisfactorily by making this position accurately.

The electrostatic precipitator is a device that collects particles such as dust and mist by corona discharge by using a constant electric power and moves them to the surface of the collecting electrode by an electric field. It is classified into dry electrostatic precipitator and wet electrostatic precipitator according to the purpose of use.

It is mainly used to remove contaminants where large amounts of dust are discharged, including heavy oil-fired boilers, power plants, cement kilns, glass melting furnaces, steel mills, and incinerators.

The electrostatic precipitator has an electrode structure composed of a discharge electrode and a collecting electrode.

When a voltage higher than a voltage capable of destroying the electrical insulation of the inlet gas is applied to the discharge electrode, positive or negative electrons are generated by corona discharge, and air or gas molecules in the space between the electrodes are ionized by the generated charges.

At this time, if the flow of the ionized gas is an impregnated gas, the contained particulate matter (dust) becomes electrical charging, and the charged particulate matter is attached to a collecting electrode by electric force to generate dust in the impregnated gas. Will be removed.

With the recent strengthening of environmental regulations, there is an increasing need to collect and remove submicron-sized ultrafine dust and mist.

However, dry electrostatic precipitators have limitations in collecting and removing ultra-fine dust and mist due to difficulty in collecting high-resistance or low-resistance dust.

The importance of the wet electrostatic precipitator has emerged due to such environmental changes.

The wet electrostatic precipitator has the advantage of reducing the re-scattering problem and the back corona problem of the dust by collecting the ultra fine dust particles into the water film formed on the dust collecting electrode and flowing down.

As an example of the prior art for the wet electrostatic precipitator, Korean Patent Registration No. 10-0694618 (registered on March 07, 2007) has been proposed for the wet electrostatic precipitator of the monthly cleaning method. The prior art is configured to clean the inner circumferential surface of the hollow tube dust collecting plate while water stored on the outside of the hollow tube dust collecting plate flows over the top of the dust collecting plate to form a water film on the dust collecting plate.

As another example of the prior art, Korea Patent Registration No. 10-1420508 (registered on July 10, 2014) has been proposed for ionizing wet electrostatic precipitators. In the prior art, a plurality of cylindrical dust collecting plates are vertically installed between the upper and lower water tanks, and circulating water in the upper water tank flows to the upper end of the dust collecting plate to form a water film on the inner circumferential surface of the dust collecting plate.

In the case of the prior art, when a high voltage is applied to the discharge rod located inside the dust collecting plate, the discharge rod becomes a (-) electrode and the dust collecting plate becomes a (+) electrode, causing corona discharge between the discharge rod and the dust collecting plate, and an electric field between the dust collecting plate and the discharge rod. To form. At this time, dust, mist, etc. contained in the gas flowing along the inner circumferential surface of the dust collecting plate are induced to have a negative charge, and then moved toward the water film of the dust collecting plate, which is a (+) electrode, and then moved to the lower water tank along the water film to be removed. .

By the way, the above-described conventional techniques can obtain a good electrostatic precipitating effect and cleaning effect only when a uniform water film is formed on the inner surface of the precipitating plate. , There was a limitation in that the flow of the cleaning liquid for forming the water film may not be uniformly performed depending on the surface and shape characteristics of the overcurrent portion.

In addition, since the illustrated prior arts have a structure in which the discharge rod is installed at the center of the dust collecting plate by the hanger means, it cannot be installed at the correct center location during the installation process as illustrated in FIG. 11 or the location of the discharge rod is shaken by gas flow or the like. When eccentric, there was a limitation that the electric field between the discharge electrode and the dust collecting plate would be non-uniform, and the electrostatic precipitating effect could be reduced.

Republic of Korea Registered Patent 10-0694618 (registered on March 7, 2007) Republic of Korea Registered Patent 10-1420508 (registered on July 10, 2014)

The present invention has been devised in view of the above problems, so that a water film in the dust collecting electrode is formed by the droplets of the cleaning solution sprayed through the atomizing nozzle while taking a vertical upstream dust collecting structure, and the center of the dust collecting electrode An object of the present invention is to provide a wet electrostatic precipitator configured to obtain an electrostatic precipitating effect and a cleaning effect satisfactorily by allowing the discharge electrode to be accurately positioned at a position.

According to an aspect of the present invention for achieving the above object, the gas collecting inlet gas to be collected is formed in the lower portion and the vertical dust collecting body is formed in the gas outlet to the gas outflow is collected gas is collected; A plurality of dust collecting cells installed vertically on the upper side of the dust collecting body; An atomizing nozzle installed between the gas inlet and the plurality of dust collecting cells and spraying a cleaning liquid droplet during the dust collecting operation; Upper and lower cleaning nozzles installed on the upper and lower sides of the dust collecting cell and spraying the cleaning liquid toward the dust collecting cell during a rest period for cleaning; And a pollutant discharge port installed on the lower side of the vertical body, wherein each of the dust collecting cells has a polygonal flat shape and extends vertically, and a hollow dust collecting electrode and a longitudinal direction inside the dust collecting electrode. It includes a rod-shaped discharge electrode installed along, the upper and lower ends of the discharge electrode are fixedly installed on the upper and lower mounting members of the beam shape respectively installed on the upper and lower portions of the dust collecting electrode, the atomizing nozzle during the dust collecting operation A water film is formed on the electrode surface of the dust collecting electrode by the cleaning liquid droplets that are sprayed and raised along the rising air stream of the gas to be collected, and dust particles contained in the gas to be collected are charged by the corona generated through the discharge electrode and the dust collecting electrode. Disclosed is a wet electrostatic precipitator, which is electrically attracted and collected, and the collected dust particles are configured to be washed away by a water film on the electrode surface of the dust collecting electrode.

Preferably, the dust collecting electrode of each dust collecting cell has a square planar shape, and the dust collecting electrodes of each dust collecting cell are arranged in a lattice structure to form an installation state of a plurality of dust collecting cells, and the discharge electrode is the It may be installed to extend through the central position.

Preferably, the upper and lower mounting members each include upper and lower coupling holes having a diameter equal to or larger than the diameter of the discharge electrode, and the top and bottom of the discharge electrode penetrate the upper or lower coupling holes, respectively. The bolt portion formed on the top or bottom of the discharge electrode may be screwed to the nut member to be fixedly installed on the upper or lower mounting member, respectively.

Preferably, the atomization nozzle may be installed to inject the cleaning liquid droplets vertically toward the dust collecting gas flowing into the dust collecting body through the gas inlet.

According to another aspect of the present invention, a mechanism for installing a rod-shaped discharge electrode inside a dust collecting electrode having a regular polygonal or circular planar shape, installed inside a vertical wet electrostatic precipitator, wherein one disc centers the disc A plurality of disc element portions having a radially divided shape as a reference, a left and right first slide engaging portion respectively formed along the left and right dividing surfaces of the respective disc element portions, and the plurality of disc element portions are combined to form a disc An upper disc body including a discharge electrode insertion hole formed in the center of the disc in a state of forming a; And a plurality of conical element parts having a conical body radially divided with respect to the center of the cone, and radially relative to the center of the circle on the upper surface of each conical element part, to the left of one of the disk element parts A second slide engaging portion formed to receive and slide together the first slide engaging portion on the right side of another disc element portion adjacent to the first slide engaging portion, and the respective conical element portions are combined to form a conical body, thereby forming a conical body center. Disclosed is a mechanism for installing a discharge electrode of a wet electrostatic precipitator, comprising: a lower cone having a discharge electrode insertion passage formed therethrough.

Preferably, the disc element portion has a shape in which one disc is divided into four equal parts, the conical element portion has a shape in which one conical body is divided into four equal portions, a radial division position of the disc element portion and a radial division of the conical element portion The position can achieve a shift of 45 degrees relative to the center of the disc.

Preferably, the left and right first slide engaging portions are respectively vertically downwardly formed along the left or right dividing surface of each disc element portion, and laterally from the ends of the left or right vertical extension portions, respectively. It includes an extended left and right horizontal extensions, the second slide coupling portion, a vertical coupling portion for receiving together the right vertical extension portion of another disc element portion adjacent to the left vertical extension portion of one of the disc element portion, and one It may be configured to include a horizontal coupling portion for accommodating the right horizontal extension portion of another disc element portion adjacent to the left horizontal extension portion of the disc element portion.

Preferably, the left and right first slide engaging portions and the second slide engaging portions are configured to adjust a slide engaging position along a radial direction with respect to the center of the disc of the upper disc body.

In the present invention, by taking the vertical upstream dust collecting structure, the water film in the dust collecting electrode is formed by the droplets of the cleaning liquid sprayed through the fog nozzle, and the discharge electrode is accurately positioned at the center of the dust collecting electrode. , It has the advantage that the electrostatic precipitating effect and cleaning effect can be obtained satisfactorily.

1 is a schematic cross-sectional view of a wet electrostatic precipitator according to an embodiment of the present invention,
Figure 2 is a schematic cross-sectional view for explaining the installation structure of the dust collecting cell of the wet electrostatic precipitator according to an embodiment of the present invention,
3 is a plan view and a front view of a device for installing a discharge electrode according to an embodiment of the present invention,
Figure 4 is a perspective view of a discharge electrode installation apparatus according to an embodiment of the present invention,
5 is an exploded perspective view of a device for installing a discharge electrode according to an embodiment of the present invention,
6 is a schematic plan view illustrating various arrangement structures of a plurality of dust collecting cells of a wet electrostatic precipitator according to an embodiment of the present invention;
Figure 7 is a schematic plan view for explaining the installation structure of a plurality of dust collecting cells of the wet electrostatic precipitator according to an embodiment of the present invention,
8 is a schematic diagram for explaining a state in which a discharge electrode is installed in a dust collecting cell using a mechanism for installing a discharge electrode according to an embodiment of the present invention;
9 and 10 are schematic cross-sectional views for explaining a state in which a discharge electrode is installed in a dust collecting cell using a mechanism for installing a discharge electrode according to an embodiment of the present invention,
11 is a schematic cross-sectional view for explaining the installation state of a dust collecting cell of a conventional wet electrostatic precipitator.

The present invention can be implemented in various other forms without departing from its technical spirit or main characteristics. Accordingly, the embodiments of the present invention are merely illustrative in all respects and should not be interpreted as limiting.

Terms such as first and second are used only for the purpose of distinguishing one component from other components. For example, the first component may be referred to as a second component without departing from the scope of the present invention, and similarly, the second component may be referred to as a first component.

When an element is said to be "connected" or "connected" to another element, it may be directly connected to or connected to the other element, but other elements may exist in the middle.

The singular expression used in the present application includes the plural expression unless the context clearly indicates otherwise. In the present application, the terms "comprises", "haves", "have", etc. are intended to express the existence of the elements or combinations thereof described in the specification, and the possibility that other elements or features are present or added. It is not excluded in advance.

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

1 is a schematic cross-sectional view of a wet electrostatic precipitator according to an embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view for explaining an installation structure of a dust collecting cell of a wet electrostatic precipitator according to an embodiment of the present invention. Plan schematic view illustrating various arrangement structures of a plurality of dust collecting cells of a wet electrostatic precipitator according to an embodiment of the present invention, FIG. 7 is an installation structure of a plurality of dust collecting cells of a wet electrostatic precipitator according to an embodiment of the present invention It is a schematic plan view for explaining.

The wet electrostatic precipitator of this embodiment includes a vertical dust collecting body 102, a plurality of dust collecting cells 110 and 112, a fog nozzle 62, upper and lower cleaning nozzles 22 and 42, and a pollutant outlet 109. ).

In the vertical dust collecting body 102, a gas inlet 105 through which a gas Ig to be collected is introduced is formed at the bottom, and a gas outlet 107 at which gas (OG) from which dust is formed is discharged is formed at the top.

The plurality of dust collecting cells 110 and 112 are installed in the vertical direction on the upper side inside the dust collecting body 102.

The atomizing (fog) nozzle 62 is provided between the gas inlet 105 and the plurality of dust collecting cells 110 and 112. The dust and mist contained in the gas to be collected by the fine cleaning liquid droplets sprayed from the atomizing nozzle 62 are wetted, and a water film is formed on the inner surface of the hollow dust collecting electrode 110. The gas to be collected by the fine cleaning liquid droplets sprayed from the atomizing nozzle 62 is cooled, and the volume of the gas is reduced, thereby increasing the efficiency of dust collection.

For example, the wet electrostatic precipitator of this embodiment may remove dust (ultrafine dust) and / or sulfuric acid mist (SO ₃ mist) of PM (Particulate Matter) 2.5 at a removal rate of 97%. PM 2.5 means a particle size with a diameter less than 2.5 μm. The dust (ultrafine dust) and / or sulfuric acid mist of PM 2.5 is mainly generated in, for example, coal-fired power plants, boilers, ships, steel mills, sulfuric acid processes, cement processes, etc., and the wet electrostatic precipitator of this embodiment is such a process or equipment. Can be applied to.

The atomizing nozzle 62 continuously or intermittently sprays the cleaning liquid droplets during the dust collecting operation of the wet electrostatic precipitator. In one example, the cleaning liquid uses purified room temperature water in a septic tank and is sprayed like fog, and the spray flow rate may be adjusted according to the processing capacity (gas flow rate) of the wet electrostatic precipitator.

Preferably, the atomizing nozzle 62 jets the cleaning liquid droplet vertically (vertical downward) toward the dust collecting target gas IG introduced into the dust collecting body 102 so as to generate only the cleaning liquid droplet.

There is no particular limitation on the number or arrangement of the atomizing nozzles 62, and it is preferable that a plurality of atomizing nozzles 62 are formed so as to sufficiently provide the wetting and mist forming effects of dust and mist. Reference numerals 6 and 64 indicate supply lines for supplying the cleaning liquid to the atomizing nozzle 62.

The upper and lower cleaning nozzles 22 and 42 are installed on the upper and lower sides of the dust collecting cells 110 and 112 to spray cleaning liquid toward the dust collecting cells 110 and 112.

Preferably, the spray angles of the upper and lower cleaning nozzles 22 and 42 are set so as to face the dust collecting surfaces (inner surfaces) of the dust collecting electrodes 110 of the dust collecting cells 110 and 112. Reference numerals 2 and 24 indicate supply lines for supplying the cleaning liquid to the upper cleaning nozzle 22, and symbols 4 and 44 indicate supply lines for supplying the cleaning liquid to the lower cleaning nozzle 42, respectively.

The upper and lower cleaning nozzles 22 and 42 spray the cleaning liquid during the rest period for cleaning, not during operation, to remove contaminants attached to the dust collecting cells 110 and 112. Since the upper and lower cleaning nozzles 22 and 42 are installed to face the dust collecting surface (inner surface) of the dust collecting electrode 110 directly, when spraying the cleaning liquid during operation, it may cause an error in the dust collecting operation due to electric discharge. The cleaning solution is sprayed during the rest period.

The pollutant discharge port 109 is installed on the lower side of the vertical body to discharge pollutants cleaned with a cleaning solution. Unexplained reference numeral 8 denotes a pollutant discharge line.

Each of the dust collecting cells 110 and 112 has a polygonal flat shape and extends vertically to a hollow dust collecting electrode 110 and a rod-shaped discharge electrode 112 installed along the longitudinal direction inside the dust collecting electrode 110. ). An example of the planar shape and arrangement structure of the various dust collecting electrodes 110 is illustrated in FIG. 6. The dust collecting electrode 110 may have a hexagonal polygonal planar shape as shown in FIG. 6 (a) or a hexagonal shape as shown in (c), or may have a circular planar shape as shown in FIG. 6 (b). .

Each of the dust collecting cells (110, 112), the upper and lower 112a of the discharge electrode 112, the upper and lower mounting members (104, 104 ') of the beam shape respectively installed in the transverse direction on the upper and lower portions of the dust collecting electrode (110) ) Is fixed to each. The fixed installation may be made, for example, in a form in which bolt portions of upper and lower portions 112a of the discharge electrode 112 are screwed by nut members 106 and 106 '. To this end, the upper and lower installation members 104 and 104 ′ include upper and lower coupling holes 104a having a diameter equal to or greater than the diameter of the discharge electrode 112. For installation of a self-aligning method, which will be described later, it is preferable that both or at least one of the upper and lower coupling holes 104a are formed to have a diameter larger than the diameter of the discharge electrode 112.

Through the above configuration, the bolt portion formed on the top or bottom 112a of the discharge electrode 112 in a state where the top and bottom 112a of the discharge electrode 112 penetrates the upper or lower coupling hole 104a, respectively. Screwed to the members 106 and 106 ', the upper or lower mounting members 104 and 104' are respectively fixedly installed.

Preferably, the dust collecting electrodes 110 of each of the dust collecting cells 110 and 112 have a square planar shape, and the dust collecting electrodes 110 of each dust collecting cells 110 and 112 are arranged in a lattice structure to form a plurality of dust collecting cells 110 and 112 Achieves the installation status of

For example, the dust collecting electrode 110 of the dust collecting cells 110 and 112 of the present embodiment may be formed in a size of 150 × 150, 200 × 200, 300 × 300 (mm). Although the discharge efficiency may decrease as the size of the dust collecting electrode 110 increases, the wet electrostatic precipitator applied to a large facility such as a coal power plant has a large capacity, and thus, if the size of the dust collecting electrode 110 is large, the dust collecting capacity increases. Since it is advantageous, the dust collecting electrode 110 can be manufactured in an appropriate size in consideration of this point.

The discharge electrode 112 is installed to extend through a central position of each of the dust collecting electrodes 110.

Although the discharge electrode 112 of the present embodiment is illustrated as a rod shape, it is also possible to further form a protruding electrode portion (not shown) of various shapes on the rod surface to increase the discharge efficiency.

The dust collecting operation of the wet electrostatic precipitator of this embodiment will be described.

First, before the gas to be collected (IG) flows into the dust collecting cells (110, 112), the cooling and saturation of the gas is formed through the liquid droplets sprayed from the atomizing nozzle (62) installed inside the dust collecting body (102). The cleaning liquid droplets injected from the atomization nozzle 62 move upward to the dust collecting cells 110 and 112 along the rising air flow of the gas to be collected.

Next, when the wet dust particles contained in the gas condensed by the cleaning liquid reach the upper dust collecting cells 110 and 112, the dust particles are charged by the corona generated through the discharge electrode 112. This means that the dust particles have an electrical polarity, and charged dust particles are directed to the dust collecting electrode 110 and are electrically attracted to the dust collecting electrode 110 and collected.

Next, the dust particles collected in this way are washed down by a film of water on the electrode surface of the dust collecting electrode 110, and dust particles are continuously collected and removed inside the square dust collecting electrode 110. The water film formed on the electrode surface of the dust collecting electrode 110 is formed by an increased cleaning liquid droplet sprayed from the atomizing nozzle 62.

Next, dust particles washed down by the water film are discharged and removed to the outside through the pollutant outlet 109.

3 is a plan view and a front view of a device for installing a discharge electrode according to an embodiment of the present invention, FIG. 4 is a perspective view of a device for installing a discharge electrode according to an embodiment of the present invention, and FIG. 5 is for installing a discharge electrode according to an embodiment of the present invention 8 is an exploded perspective view of a mechanism, and FIG. 8 is a schematic view for explaining a state in which a discharge electrode is installed in a dust collecting cell using a mechanism for installing a discharge electrode according to an embodiment of the present invention, FIGS. 9 and 10 are according to an embodiment of the present invention It is a schematic cross-sectional view for explaining a state in which a discharge electrode is installed in a dust collecting cell using a mechanism for installing a discharge electrode.

The discharge electrode installation mechanism of this embodiment is a mechanism that is installed inside the vertical wet electrostatic precipitator and is used to install the rod-shaped discharge electrode 112 inside the dust collecting electrode 110 having a regular polygonal or circular flat shape.

The mechanism for installing the discharge electrode of this embodiment is used in the process of installing the discharge electrode 112 and is removed in the operation process after the discharge electrode 112 is installed. The mechanism for installing a discharge electrode of this embodiment provides an auto-alignment function so that the rod-shaped discharge electrode 112 is installed at a fixed center position inside the dust collecting electrode 110 having a regular polygonal or circular planar shape.

When the rod-shaped discharge electrode 112 is installed at a regular central position inside the dust collecting electrode 110 having a regular polygonal or circular planar shape, the electric field formed by the discharge electrode 112 and the dust collecting electrode 110 is uniformly formed, thereby providing an electrostatic dust collection effect. It has the advantage of increasing.

In addition, when both the top and bottom 112a of the rod-shaped discharge electrode 112 are installed in a fixed manner, unlike the hanger method, the position of the discharge rod is prevented from being shaken or eccentric by gas flow, etc., thereby preventing the discharge electrode 112 and the dust collecting electrode. The electric field formed by (110) is stably formed, which has the advantage of enhancing the electrostatic precipitating effect.

The mechanism for installing a discharge electrode of this embodiment includes an upper disc body 200a and a lower cone shape 200b.

The upper disk body 200a includes a plurality of disk element parts 206 having a form in which one disk is radially divided based on the center of the disk, and the left and right dividing surfaces of the respective disk element parts 206. The left and right first slide coupling portions 204, 205, 204 ', and 205' respectively formed along with the discharge electrode insertion holes 202 formed in the center of the disc in a state where the plurality of disc element portions 206 are combined to form a disc do.

The lower conical body 200b includes a plurality of conical element parts 218 having a shape in which one conical body is radially divided based on the center of the cone, and a circle center on an upper surface of each conical element part 218 It is formed radially with respect to the first slide engaging portion 204'205 'of the right side of the other disc element portion 206 adjacent to the left first slide coupling portion (204,205) of one of the disc element portion 206 The second slide coupling portions 214, 215, 215 'formed to be accommodated and slide-coupled together, and the discharge electrode insertion passages 212, 219 formed through the center of the conical body in a state where the respective conical element portions 218 are combined to form a conical body. It includes.

Preferably, the discharge electrode insertion hole 202 and the discharge electrode insertion passages 212 and 219 preferably include at least one portion having a diameter equal to or smaller than the outer diameter of the discharge electrode 112 based on the coupling state. When such conditions are satisfied, the installation position can be adjusted by uniformly pressing the outer surface of the discharge electrode 112 in the entire direction in the automatic self-alignment process described later.

Preferably, the disc element portion 206 has a shape in which one disc is divided into four equal parts, and the conical element portion 218 has a shape in which one conical body is divided into four equal parts, and the disc element portion 206 ) And the radially divided position of the conical element portion 218 forms a shift of 45 degrees relative to the center of the disk. The number of divisions of the disk element part 206 may be variously modified in consideration of the outer diameter of the discharge electrode 112.

More specifically, the left and right first slide engaging portions 204, 205, 204 ', and 205' are vertically downwardly formed left and right vertical extension portions 204 and 204, respectively, along the left or right dividing surface of each disc element portion 206. '), And the left and right horizontal extensions 205 and 205', respectively formed laterally extending from the ends of the left or right vertical extensions 204 and 204 '.

In addition, the second slide engaging portions 214, 215, and 215 ', the right vertical extension portion 204' of the other disc element portion 206 adjacent to the left vertical extension portion 204 of one of the disc element portions 206, The vertical coupling portion 214 for accommodating together, and the right horizontal extension portion 205 'of another disk element portion 206 adjacent to the left horizontal extension portion 205 of one of the disc element portions 206 It comprises a horizontal coupling portion (215,215 ') for receiving together.

Through the above structure, the left and right first slide engaging portions 204,205,204 ', 205' and the second slide engaging portions 214,215,215 'are directed in a radial direction with respect to the center of the disc of the upper disc body 200a. Therefore, the slide coupling position can be adjusted.

Through the adjustment of the coupling position, it is possible to provide an auto-alignment installation function according to the size of the outer diameter of the discharge electrode 112.

The process of using the apparatus for installing a discharge electrode in this embodiment will be described.

The discharge electrode 112 is inserted into the dust collecting electrode 110 in the vertical direction along the longitudinal direction and positioned in the center direction.

The upper electrode 112a bolt portion of the discharge electrode 112 penetrates the upper coupling hole 104a of the upper installation member 104, and the upper nut member 106 is temporarily screwed.

The lower 112a bolt portion of the discharge electrode 112 penetrates the lower coupling hole 104a 'of the lower installation member 104', and the lower nut member 106 'is temporarily screwed.

In this temporary coupling state, although the upper and lower ends of the discharge electrode 112 are fixed, the center is not accurately adjusted, and may be slightly eccentric as shown in FIG. 11 or located at the center of the center as shown in FIG. 2. It may be in a state.

In addition, the upper coupling hole 104a and the lower coupling hole 104a 'are formed to have an inner diameter larger than the outer diameter of the discharge electrode 112 in the above-mentioned coupling state, and the lower nut member 106' is not tightly coupled and slightly loosened. If the combined state is achieved, the discharge electrode 112 forms a temporary combined state in a state in which a slight movement or direction change is possible in the horizontal direction.

In this temporary engagement state, the discharge electrode installation mechanism of the present embodiment is installed above the discharge electrode 112.

At a position between the upper mounting member 104 and the dust collecting electrode 110, a plurality of disk element parts 206 constituting the upper disk body 200a are collected around the discharge electrode 112 to form a disk. Through this, the discharge electrode 112 is inserted into the discharge electrode insertion hole 202 formed at the center of the original plate 200a.

Another disc element portion adjacent to the left first slide portion 204 and 205 of the second slide element portions 214 and 215 and 215 'formed on the upper surface of each conical element portion 218 ( The right first slide coupling portion 204'205 'of 206) is accommodated together to slide-couple.

When each conical element portion 218 is all coupled to the upper disc body 200a, the discharge electrode installation mechanism is shown in FIG. 4 with the discharge electrode 112 inserted into the discharge electrode insertion hole 202 and the discharge electrode insertion passages 212 and 219. The same bonding state is achieved.

In this combined state, when the mechanism for installing the discharge electrode is moved by self-weight or external force to the upper end of the dust collecting electrode 110, the outer inclined surface of each conical element part 218 is inserted into the upper opening of the dust collecting electrode 110, and is in contact with each other. As shown in FIG. 9 by applying mutual pressure to each other, the outer surface of the discharge electrode 112 is in pressure contact with the inner surfaces of the discharge electrode insertion hole 202 and the discharge electrode insertion passages 212 and 219 of the discharge electrode installation mechanism.

Since each conical element part 218 is coupled to the upper disk body 200a in a slidable form in a radial direction, the position of the lower conical body 200b formed by combining each conical element part 218 is collected. When the operator appropriately adjusts to be located at the center of the electrode 110, the discharge electrode 112 supported in the above-described temporary coupling state receives the uniform pressing force of each conical element part 218 and the center of the dust collecting electrode 110 Will come to the automatically watched position.

Next, at the position between the lower installation member 104 'and the dust collecting electrode 110, the same operation as above was performed by using another discharge electrode installation mechanism, so that the upper and lower ends of the discharge electrode 112 are both dust collecting electrodes 110. Lets you come to the position of self-alignment inside the interior.

In this state, when the lower nut member 106 'is tightly coupled, both the upper and lower ends of the discharge electrode 112 have a state in which they are fixedly installed in an auto-focused position inside the dust collecting electrode 110. This state is illustrated in FIGS. 8 and 10.

Subsequently, the upper discharge electrode installation mechanism is moved upward to the outside of the dust collecting electrode 110 to dismantle the slide in the reverse process, and the lower discharge electrode installation mechanism is moved downward to the outside of the dust collection electrode 110 to the opposite process as above. When the slide is disassembled, the fixed installation of the discharge electrode 112 is completed in a state precisely aligned with the center position of the collecting electrode 110.

Subsequently, the discharge electrodes 112 may be installed in the same manner in the other collection electrodes 110 constituting the collection cells. 1 and 7 illustrate such a final installation state.

Although the present invention has been described with reference to the accompanying drawings with reference to preferred embodiments, it is apparent to those skilled in the art that many various and obvious modifications are possible without departing from the scope of the present invention. Therefore, the scope of the invention should be construed by the claims set forth to cover these many variations.

62: fog nozzle
102: dust collecting body
104,104 ': Upper and lower mounting members
110: dust collecting electrode
112: discharge electrode
200a: upper disc
200b: lower conical
206: disc element portion
218: conical element part

Claims (8)

A vertical dust collecting body in which a gas inlet through which gas to be collected is introduced is formed at a lower portion and a gas outlet through which gas is collected is formed;
A plurality of dust collecting cells installed vertically on the upper side of the dust collecting body;
An atomizing nozzle installed between the gas inlet and the plurality of dust collecting cells and spraying a cleaning liquid droplet during the dust collecting operation;
Upper and lower cleaning nozzles installed on the upper and lower sides of the dust collecting cell and spraying the cleaning liquid toward the dust collecting cell during a rest period for cleaning; And
It includes; a pollutant discharge port installed on the lower side of the vertical body;
Each of the dust collecting cells,
It includes a polygonal planar shape and a hollow dust collecting electrode extending up and down, and a rod-shaped discharge electrode installed along the longitudinal direction inside the dust collecting electrode,
The upper and lower ends of the discharge electrodes are fixed to the upper and lower mounting members of the beam shape respectively installed on the upper and lower portions of the dust collecting electrode, respectively.
During the dust collection operation, a water film is formed on the electrode surface of the dust collecting electrode by cleaning liquid droplets sprayed from the atomizing nozzle and raised along the rising air stream of the gas to be collected, and dust particles contained in the gas to be collected are corona generated through the discharge electrode. The dust particles washed by the water film formed on the electrode surface of the dust collecting electrode are charged by being collected by the electrostatically attracted by the dust collecting electrode, and the collected dust particles are washed away from the electrode surface of the dust collecting electrode. Wet electrostatic precipitator, characterized in that configured to be discharged and removed to the outside through the outlet.
According to claim 1,
The dust collecting electrode of each dust collecting cell has a square planar shape,
The dust collecting electrodes of each dust collecting cell are arranged in a lattice structure to form an installation state of a plurality of dust collecting cells,
The discharge electrode is a wet electrostatic precipitator characterized in that it is installed in a form extending through the central position of each of the dust collecting electrode.
According to claim 2,
The upper and lower mounting members each include upper and lower coupling holes having a diameter equal to or larger than the diameter of the discharge electrode,
The upper and lower ends of the discharge electrodes penetrate the upper or lower coupling holes, respectively, and the bolt portions formed on the upper or lower ends of the discharge electrodes are screwed to the nut members and fixedly installed on the upper or lower mounting members, respectively. Wet electrostatic precipitator.
According to claim 1,
The atomization nozzle is a wet electrostatic precipitator characterized in that it is installed to spray the cleaning liquid droplets vertically toward the dust collecting gas flowing into the dust collecting body through the gas inlet.
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