KR102470976B1 - Charging device for wet electrostatic precipitator and wet electrostatic precipitator comprising the same - Google Patents

Abstract

The present invention can significantly increase dust collection efficiency while being configured relatively compactly, thereby reducing space and installation investment costs for installing dust collectors, and securing economic feasibility and maintainability by facilitating the removal of contaminants. It relates to a charging device for a wet electric precipitator and a wet electric precipitator including the same. According to the present invention, a scrubber housing configured to allow pollutant-containing gas to be introduced and treated gas to be discharged; a blower unit configured to communicate with the gas discharge side of the scrubber housing and discharge the clean gas processed in the scrubber housing to the outside; a wet pre-treatment unit provided at a front side inside the scrubber housing and configured to pre-process contaminant-containing gas; an ionizer unit configured to ionize contaminants and fine water particles in the gas being treated by the wet pretreatment unit; a charging device unit configured to remove contaminants and fine moisture by charging the contaminants and fine moisture ionized by the ionizer unit; and a cleaning liquid supply-processing device unit supplying cleaning liquid to the scrubber housing and treating the cleaning liquid disposed in the scrubber housing.

Description

Charging device for wet electric precipitator and wet electrostatic precipitator including the same {CHARGING DEVICE FOR WET ELECTROSTATIC PRECIPITATOR AND WET ELECTROSTATIC PRECIPITATOR COMPRISING THE SAME}

The present invention relates to a charging device for a wet electric precipitator and a wet electric precipitator including the same, and more particularly, it can significantly increase dust collection efficiency while being configured relatively compactly, thereby saving space for installation and installation of the dust collector It relates to a charging device for a wet electric precipitator and a wet electric precipitator including the same, which can reduce investment costs and ensure economic feasibility and maintainability due to easy removal of contaminants.

In general, an electric precipitator is a device that purifies the air by applying an electric field to suspended dust in the air and collecting it with electrostatic force to purify the air.

Electric precipitators can be divided into types using a dust collecting pipe or a dust collecting plate according to the shape of a dust collecting part, which is a part that directly collects dust.

1 schematically illustrates the principle of electric dust collection using a dust collection plate.

As shown in FIG. 1 , an electric precipitator using a dust collecting plate includes a dust collecting plate 10 , a discharge electrode 20 and a high voltage generator 30 . The discharge electrode 20 is disposed between the dust collecting plates 10 and generates a corona discharge.

More specifically, when DC high voltage is applied to one end of the discharge electrode 20 from the high voltage generator 30, a corona discharge is generated in the discharge electrode 20, and the gas in the space between the discharge electrode 20 and the dust collection plate 10 is caused by the corona discharge. is ionized, and an electric field is formed between the discharge electrode 20 and the dust collection plate 10.

The dust gas passes between the dust collection plates 10, and the dust contained in the gas is electrically charged due to gas ionization by corona discharge, and the dust charged by the electric force (Coulomb force) adheres to the dust collection plates 10. As a result, the dust of the dust gas passing between the dust collection plates 10 is removed. That is, dust collection can be performed to purify dust gas.

The dust attached to the inner wall of the dust collecting plate 10 can be removed by washing with water or applying a physical impact to the dust collecting plate 10. The method of removing dust using water is a wet electric precipitator or a physical impact to remove dust This method is called dry electrostatic precipitator.

In the case of a wet electric precipitator, the flow of water flowing on the dust collecting surface, that is, on one surface of the discharge electrode 20 side of the dust collecting plate 10, flows down uniformly over the entire area of the dust collecting surface and at the same time maintains a water film of the same thickness to maximize the performance of the dust collector However, in the conventional plate-type dust collection plate, the size of the dust collection plate must be increased in order to increase the dust collection efficiency, which eventually causes a problem in that the entire device is enlarged.

In addition, in most conventional wet electric precipitators, the water film formed on the dust collecting surface is sensitively affected by the operating conditions of the dust collector and the flow rate of water for forming the water film, so it is difficult to form a water film uniformly over the entire area of the dust collecting surface. there was.

Korea Registered Utility Model Publication No. 20-131362 (Announced on December 15, 1998) Republic of Korea Registered Patent Publication No. 10-0708544 (Announced on April 18, 2007) Republic of Korea Patent Publication No. 10-2020-0109180 (2020.09.22. Publication) Republic of Korea Patent Publication No. 10-2020-0109150 (2020.09.22. Publication)

Therefore, in order to solve the above conventional problems, the dust collection efficiency can be remarkably increased while being configured relatively compactly, so that the space for installing the dust collector and the installation investment cost can be reduced, and the removal of contaminants is easy. An object of the present invention is to provide a charging device for a wet electric precipitator and a wet electric precipitator including the same, which can secure economic feasibility and maintainability.

The problems of the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

According to one aspect of the present invention for achieving the objects and other features of the present invention, a charging device included in a wet electric precipitator and configured to remove contaminants and fine moisture by charging, which is formed to allow gas flow casing; and a plurality of charging modules provided at intervals in the casing, wherein the charging module has a cleaning liquid supply path formed along a central axis in a longitudinal direction, and a plurality of cleaning liquid nozzles formed in a direction orthogonal to the cleaning liquid supply path. A charging device for a wet type electric precipitator is provided, comprising a charging support having a circular or polygonal cross section, and a plurality of charging brushes provided on an outer surface of the charging support.

According to another aspect of the present invention, a scrubber housing configured so that pollutant-containing gas is introduced and treated gas is discharged; a blower unit configured to communicate with the gas discharge side of the scrubber housing and discharge the clean gas processed in the scrubber housing to the outside; a wet pre-treatment unit provided at a front side inside the scrubber housing and configured to pre-process contaminant-containing gas; an ionizer unit configured to ionize contaminants and fine water particles in the gas being treated by the wet pretreatment unit; a charging device unit configured to remove contaminants and fine moisture by charging the contaminants and fine moisture ionized by the ionizer unit; and a cleaning liquid supply-processing device unit supplying cleaning liquid to the scrubber housing and treating the cleaning liquid disposed in the scrubber housing.

In another aspect of the present invention, the blower unit includes a blower pipe connected to the outlet of the scrubber housing, a blower provided at one end of the blower pipe, and a stack connected to the blower, and the ionizer unit includes An ionizer provided on the downstream side of the wet pretreatment unit inside the scrubber housing and configured to ionize pollutants and fine water particles in the gas with negative ions by corona discharge, and provided on one side of the exterior of the scrubber housing , a high voltage supply device configured to supply a DC high voltage to the ionizer.

In another aspect of the present invention, the wet pretreatment unit may include a casing in which a contaminant-containing gas is formed to flow; It is provided in the casing, and the contaminants in the pollutant-containing gas and the cleaning liquid are mixed by using a venturi effect with respect to the inflowing pollutant-containing gas and the sprayed cleaning liquid, so that the pollutants are first removed and passed through. Contaminant removal module configured; and a washing liquid inflow blocking module provided behind the pollutant removal module and configured to block the pollutant-containing washing liquid introduced from the pollutant removal module by an inertial collision force and allow gas to pass therethrough.

In another aspect of the present invention, the casing includes a casing body portion opened on the front and rear surfaces, and a front coupling flange portion and a rear coupling flange portion formed by extending outwardly from the front and rear ends of the casing body portion, and the contaminant The removal module is composed of a plurality of pollutant removal members arranged with a certain gap in a direction perpendicular to the flow direction of the pollutant-containing gas, and the pollutant removal members are in the form of a pipe having a semicircular or circular cross section or a cross section "V" It may be formed in the shape of a ruler, and the opening may be disposed so as to face the washing liquid inflow blocking module.

In another aspect of the present invention, the washing liquid inflow blocking module is composed of a partition member formed in a waveform and having a plurality of gas passage holes, disposed in parallel with the pollutant removal module, and a valley portion of the pollutant removal module. , and the barrier rib member may be formed in a “V”-shaped waveform, or may be formed in a semi-circular ring shape or a circular pipe-shaped waveform.

In another aspect of the present invention, the gas passage hole is symmetrical to each other and formed in the same size on both side walls based on the valley of the partition member, and the valley of the partition wall member is formed in a gap between two contaminant removal members adjacent to each other. can be arranged on the same line.

In another aspect of the present invention, the charging device unit includes a casing formed to enable gas flow, and a plurality of charging modules provided at intervals in the casing, wherein the charging modules are formed along a central axis in a longitudinal direction. A charging support having a circular or polygonal cross-section in which a supply path is formed and a plurality of cleaning liquid injection holes are formed in a direction orthogonal to the cleaning liquid supply path, and a plurality of charging brushes provided on an outer surface of the charging support, wherein the casing and charging At least one of the modules may be provided grounded.

In another aspect of the present invention, the cleaning liquid supply-processing device unit includes a cleaning liquid storage tank provided at one side of the lower portion of the scrubber housing; a washing liquid pump provided at one side of the washing liquid storage tank to pump and circulate the washing liquid; a cleaning liquid supply pipe supplying the cleaning liquid pumped by the cleaning liquid pump to the scrubber housing; a cleaning liquid nozzle connected to one end of the cleaning liquid supply pipe and provided at a front side of the wet pre-processing unit to inject a cleaning liquid into the wet pre-processing unit; a cleaning liquid supply pipe for a charging device connected to the cleaning liquid supply pipe and configured to supply a cleaning liquid to the cleaning liquid supply path of the charging support; and one or more cleaning liquid discharge conduits provided between the scrubber housing and the cleaning liquid storage tank and configured to allow the cleaning liquid from the scrubber housing to be discharged to the cleaning liquid storage tank. It may further include filtering means configured to filter the washing liquid.

According to the charging device for a wet electric precipitator and the wet electric precipitator including the same according to the present invention, the following effects are provided.

First, the present invention can be configured relatively compactly compared to a conventional charging device including a plate-shaped charging plate, and thus has an effect of promoting space savings for the installation of the dust collector.

Second, the present invention has an effect of reducing installation investment costs because dust collection efficiency can be remarkably increased compared to existing charging devices of the same size.

Third, the present invention has an effect of increasing economic feasibility and maintainability due to a structure in which contaminants can be easily removed.

The effects of the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

1 is a view schematically showing the principle of electric dust collection using a dust collecting plate.
2 is a side view of the configuration of a wet electric precipitator according to the present invention.
3 is a planar view of the configuration of a wet electric precipitator according to the present invention.
4 is a front view of a wet electric precipitator according to the present invention.
5 is a view showing the configuration of a wet pretreatment unit included in a wet electric precipitator according to the present invention.
6 is a view for explaining a processing operation of a pre-processing unit included in a wet electric precipitator according to the present invention.
7 is a view showing a charging device included in the wet electric precipitator according to the present invention.

Additional objects, features and advantages of the present invention may be more clearly understood from the following detailed description and accompanying drawings.

Prior to the detailed description of the present invention, the present invention may make various changes and may have various embodiments, and the examples described below and shown in the drawings are not intended to limit the present invention to specific embodiments. No, it should be understood to include all changes, equivalents or substitutes included in the spirit and scope of the present invention.

It is understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but other elements may exist in the middle. It should be. On the other hand, when an element is referred to as “directly connected” or “directly connected” to another element, it should be understood that no other element exists in the middle.

Terms used in this specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "include" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

In addition, terms such as "...unit", "...unit", and "...module" described in the specification mean a unit that processes at least one function or operation, which is hardware, software, or hardware and It can be implemented as a combination of software.

In addition, in the description with reference to the accompanying drawings, the same reference numerals are given to the same components regardless of reference numerals, and overlapping descriptions thereof will be omitted. In describing the present invention, if it is determined that a detailed description of related known technologies may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted.

Hereinafter, a charging device for a wet electric precipitator and a wet electric precipitator including the same according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a view of the configuration of the wet electric precipitator according to the present invention as viewed from the side, Figure 3 is a view of the configuration of the wet electric precipitator according to the present invention viewed from a plane, Figure 4 is a wet electric precipitator according to the present invention This is a view of the device from the front. 5 is a view showing the configuration of a wet preprocessing unit included in a wet electric precipitator according to the present invention, and FIG. 6 is a view for explaining the processing operation of the preprocessing unit included in the wet electric precipitator according to the present invention, 7 is a view showing a charging device included in the wet electric precipitator according to the present invention.

In the following description, the meaning of front and rear refers to the upstream side as the front and the downstream side as the rear based on the flow direction of the pollutant-containing gas processed in the electric precipitator of the present invention.

As shown in Figs. 2 to 7, the wet electric precipitator according to the present invention largely includes a scrubber housing 100; blower unit 200; Wet pre-processing unit 300; an ionizer unit 400; charging unit 500; and a cleaning liquid supply-processing device unit 600.

Specifically, as shown in FIGS. 2 to 7 , in the wet electric precipitator according to the present invention, pollutant-containing gas is introduced from one end, and the following wet pretreatment device unit 300 and ionizer unit 400 and a scrubber housing 100 configured to discharge the clean gas from which contaminants are removed by the charging unit 500 to the other end; a blower unit 200 configured to communicate with the other end of the scrubber housing 100 and discharge the clean gas processed in the scrubber housing 100 to the outside through a stack 330; a wet pretreatment unit 300 provided on the front side of the inside of the scrubber housing 100 and configured to pretreat pollutant-containing gas in a wet manner; an ionizer unit 400 configured to ionize contaminants and fine water particles in the gas processed by the wet pretreatment unit 300; a charging device unit 500 configured to receive contaminants and fine moisture ionized by the ionizer unit 400 and remove pollutants and fine moisture by charging; and a cleaning liquid supply-processing device unit 600 that supplies cleaning liquid to the scrubber housing 100 and receives and processes the cleaning liquid used in the scrubber housing 100 . Reference numeral 10 denotes a facility frame in which the device is installed.

The scrubber housing 100 is configured such that pollutant-containing gas is introduced at one end and clean gas from which contaminants are removed by the blower unit 200 is discharged at the other end.

The blower unit 200 includes a blower 210 connected in communication with the outlet 101 of the scrubber housing 100, a blower 220 provided at one end of the blower 210, and the blower ( and a stack 230 connected to 220.

Next, the wet pretreatment device unit 300 is a component provided on the front side of the inside of the scrubber housing 100 and configured to pretreat pollutant-containing gas in a wet manner.

Specifically, the wet pretreatment unit 300 includes a casing 310 in which pollutant-containing gas is formed to flow, and a front portion (upstream side based on the flow direction of the pollutant-containing gas) in the casing 310 ), a pollutant removal module 320 configured to mix the pollutants in the pollutant-containing gas and the sprayed cleaning liquid by using a venturi effect, and allow the pollutants to pass while being removed, and the pollutant removal It is provided on the rear side of the module 320 (on the downstream side with respect to the flow direction of the pollutant-containing gas) and removes the contaminant-containing cleaning liquid from which the pollutants are removed in the pollutant removal module 320 by an inertial impact force. and a washing liquid inflow blocking module 330 configured to block the inflow of the washing liquid into the contaminant removal facility and to allow the gas to flow homogeneously so that the dust collection efficiency can be maintained high in the downstream component.

The casing 310 includes a casing body portion 311 open at the front and rear to provide a flow passage for pollutant-containing gas, and a front coupling flange portion 312 extending outward from the front and rear ends of the casing body portion 311. ) and a rear coupling flange portion 313.

As illustrated in the drawing, the casing body portion 311 is formed as a rectangular enclosure, but is not limited thereto.

The front and rear coupling flange portions 312 and 313 are formed by extending a predetermined length outward from four sides of the casing body portion 311 . Of course, the front and rear coupling flange portions 312 and 313 may be formed in an appropriate shape suitable for the object to be coupled (ie, the inner space of the scrubber housing 100), for example, in the form of an annular ring or a pulley.

The pollutant removal module 320 is provided in the front part (upstream side relative to the flow direction of the pollutant-containing gas) in the casing 310, and has a Venturi effect ( The contaminants in the contaminant-containing gas are mixed with the cleaning liquid by using the venturi effect, and the contaminants pass through while being removed.

Specifically, in the pollutant removal module 320, a pollutant removal member 321 formed in a semicircular or circular pipe shape in cross section (cross section) maintains a predetermined gap in a direction perpendicular to the flow direction of the pollutant-containing gas. are arranged and composed.

In addition, in the pollutant removal module 320, in another embodiment, pollutant removal members formed in a “V” shape in cross section (cross section) are arranged with a predetermined gap in a direction perpendicular to the flow direction of the pollutant-containing gas. It consists of

Here, the contaminant removal module 320 is disposed such that the open portion faces the washing liquid inflow blocking module 330 . In other words, the pollutant removal module 320 is arranged to form a flow path through which a gas passage formed by neighboring pollutant removal members 321 is reduced from an upstream side to a downstream side.

The washing liquid inflow blocking module 330 is provided on the rear side (downstream side based on the flow direction of the pollutant-containing gas) of the pollutant removal module 320 to remove pollutants from the pollutant removal module 320. The washing liquid containing the pollutants is removed by an inertial collision force to block the inflow of the washing liquid to the pollutant removal facility and to allow the gas to flow homogeneously so that the dust collection efficiency can be maintained high in the downstream component.

Specifically, the washing liquid inflow blocking module 330 is formed in a waveform and is composed of a barrier member 332 in which a plurality of gas passage holes 331 are formed, disposed in parallel with the contaminant removal module 320, and has an opening is disposed to face the contaminant removal module 320 .

The partition wall member 332 may be formed in a "V" shape in cross section (cross section) as shown in the drawing, and may be formed in a "V" shape with a round valley or a semicircular ring shape.

In addition, the gas passage holes 331 formed in the partition wall member 332 are symmetrical to each other on both side walls of the partition wall member 332 and are formed in the same size, that is, both side walls with respect to the valley of the partition wall member 332. It is preferable that the gas passage holes 331 are symmetrical and formed to have the same size, which makes the airflow of the gas passing through the gas passage holes 331 of the partition wall member 332 homogeneous.

Here, it is preferable that the valley of the partition wall member 332 is disposed on the same line as the gap between two neighboring pollutant removal members 321 of the pollutant removal module 320. .

In other words, the washing liquid containing contaminants passing through the gap formed by the two neighboring pollutant removing members 321 of the pollutant removing module 320 passes through the partition wall member 332 of the washing liquid inflow blocking module 330. It is made so as to collide (hit) with the bone of the

Describing the operational effect of the wet pretreatment unit configured as described above, the pollutant-containing gas flowing into the casing 310 has a flow rate in the passage between two neighboring pollutant removal members 321 of the pollutant removal module 320 This accelerates to form a strong turbulent flow, and accordingly, the mixing of the pollutant-containing gas and the cleaning liquid (the cleaning liquid sprayed through the cleaning liquid spraying device provided in front of the pollutant removal module 320) is rapidly performed, so that the pollutant removal efficiency is improved. It rises. After the pollutants are primarily removed in the pollutant removal module 320, the cleaning liquid of the pollutant-containing gas passing through the pollutant removal module 320 flows into the barrier member 332 of the cleaning liquid inflow blocking module 330. Since the cleaning liquid containing contaminants has a very large specific gravity and particle size compared to gas, when the flow direction rapidly changes, it hits the valley (pocket) of the partition wall member 332 by inertial force and is blocked, flowing down and removing contaminants. The gas from which the cleaning liquid and the cleaning liquid are removed escapes through the gas passage holes 331 on both sides of the partition wall member 332 .

At this time, since the gas passage hole 331 is formed symmetrically with the same size on both side walls of the partition member 332, the passing gas is evenly distributed (gas rectification) to increase the operating efficiency of the pollutant removal facility, As a result, the pollutant removal efficiency is improved.

Subsequently, the ionizer unit 400 is a component configured to ionize contaminants and fine water particles in the gas processed by the wet pretreatment unit 300, and inside the scrubber housing 100 It is provided on the downstream side of the wet pretreatment device unit 200, and configured to ionize contaminants and fine water particles in the gas with negative ions by corona discharge by DC high voltage supplied from the high voltage supply device 420 It includes an ionizer 410, and a high voltage supply device 420 provided on one outer side of the scrubber housing 100 and configured to supply DC high voltage to the ionizer 410.

Next, the charging device unit 500 is configured to receive the pollutants and fine moisture ionized by the ionizer unit 400 and remove the pollutants and fine moisture by charging.

Specifically, the charging device unit 500 includes a casing 510 formed to allow gas flow, and a plurality of casings 510 provided to enable gas flow, and the cleaning liquid supply-processing unit 600 supplies and a charging module 520 configured to spray a cleaning liquid, and at least one of the casing 510 and/or the charging module 520 is configured to be grounded.

The charging module 520 has a circular or polygonal cross-section in which a cleaning liquid supply path 521a is formed on a central axis in the longitudinal direction, and a plurality of cleaning liquid injection holes 521b are formed in a direction perpendicular to the cleaning liquid supply path 521a. and a plurality of charging brushes 522 provided on an outer surface of the charging supporter 521.

The charging support 521 and the charging brush 522 may be made of a metal material having electrical conductivity, but are preferably made of a resin material such as polypropylene instead of metal or an expensive conductive material.

The brushes 522 are positioned so that a cleaning liquid (cleaning liquid) sprayed from a cleaning liquid injection port 521b formed in the charging supporter 521 is sprayed between the respective brushes.

In the charger unit 500 configured as described above, negative ions generated by corona discharge by DC high voltage in the ionizer unit 400 ionize pollutants and fine water particles in the gas at the upstream side thereof, and negatively ionized contamination Substances and fine moisture move to the charging device unit 500, which is relatively positively polarized by grounding, and adhere to the brush 320 to be removed.

In other words, during the operation of the wet electrostatic precipitator, large particles of washing water that can cause sparks and arcs are removed in the wet pretreatment unit 300, and fine mist water particles are removed from the charging unit. 500, the brush 522 of the charger unit 500 is always wet with moisture so that the contaminants continuously flow down and are removed. At this time, since the brush 522 is always wet with moisture during operation and is charged by the moisture, the material of the brush does not necessarily need to be a metal that transmits electricity, so the range of material selection can be widened.

The cleaning liquid is introduced through the cleaning liquid supply path 521a of the charging support 521, and the flowing cleaning liquid is sprayed through the spray hole 521b to remove contaminants attached to the brush and perform cleaning, especially hair. The flexible brush features excellent cleaning power.

In such a charging device unit 500, the brush 522, such as hair, is individually dust-collecting and electrified to increase the charging area that can collect dust per unit area, thereby increasing the dust collection efficiency. On the other hand, if the dust collection efficiency is the same, the size of the dust collector Therefore, it is possible to obtain space savings for the installation of the dust collector and reduction of installation investment cost.

Next, the cleaning liquid supply-processing device unit 600 supplies the cleaning liquid to the scrubber housing 100, and is configured to receive and process the cleaning liquid used in the scrubber housing 100.

Specifically, the cleaning liquid supply-processing device unit 600 includes a cleaning liquid storage tank 610 provided at one side of the lower portion of the scrubber housing 100 and a cleaning liquid storage tank 510 provided at one side to pump and circulate the cleaning liquid. A washing liquid pump 620, a washing liquid supply pipe 630 for supplying the washing liquid pumped by the washing liquid pump 620 to the scrubber housing 100, and one end of the washing liquid supply pipe 620 connected to the wet It is provided on the front side of the preprocessing device unit 300 and is connected to the cleaning liquid injection port 640 for spraying the cleaning liquid to the wet preprocessing unit 300 and the cleaning liquid supply pipe 520, and the charging device unit 500 Is provided between the cleaning liquid supply pipe 650 for the charging device configured to supply the cleaning liquid to the cleaning liquid supply path 521a of the charging support 521 of the scrubber housing 100 and the cleaning liquid storage tank 610, the scrubber It includes one or more cleaning liquid discharge conduits 660 provided to discharge the cleaning liquid used in the housing 100 to the cleaning liquid storage tank 610 .

Reference numeral 670 is a pipe alignment joint for aligning the pipe (washing liquid supply pipe 630).

Here, the cleaning liquid supply processing device unit 600 may further include a filtering means configured to filter the pumped cleaning liquid, which is replaceably provided on the cleaning liquid supply pipe 630, and the filtering means arranges the pipe. It can be configured in a joint for

In the wet preprocessor according to the present invention configured as described above, when the cleaning liquid supplied from the cleaning liquid supply-processing unit 600 is sprayed to the wet preprocessing unit 300 through the cleaning liquid nozzle 640, the wet preprocessing unit In 300, rapid mixing of the cleaning liquid with fine dust and gaseous pollutants is performed. Accordingly, the gaseous pollutants are absorbed into the cleaning liquid and large particles such as particulate matter are contained in the cleaning liquid, and the cleaning liquid containing contaminants is It is removed by inertial collision on the downstream side of the wet preprocessor unit 300.

Then, fine cleaning liquid particles and residual contaminants are negatively ionized by the ionizer unit 300 and moved to the relatively positively charged charging unit 500, whereby fine water droplets and fine dust particles of the cleaning liquid are charged by electric force. Dust is collected in the brush 522 of the device unit 500, water droplets flow together with the collected fine dust, and the clean gas removed from the gas is discharged from the scrubber housing 100 to the outside.

As described above, according to the charging device for a wet electric precipitator and the wet electrostatic precipitator including the same according to the present invention, it can be configured relatively compactly compared to a conventional charging device including a plate-shaped charging plate, thereby Therefore, it is possible to save space for the installation of the dust collector, and the dust collection efficiency can be significantly increased compared to the existing charging device of the same size, so the installation investment cost can be reduced, and the structure is easy to remove pollutants. It has the advantage of increasing economic feasibility and maintainability.

The embodiments described in this specification and the accompanying drawings merely illustrate some of the technical ideas included in the present invention by way of example. Therefore, since the embodiments disclosed in this specification are not intended to limit the technical idea of the present invention but to explain it, it is obvious that the scope of the technical idea of the present invention is not limited by these embodiments. All modified examples and specific examples that can be easily inferred by those skilled in the art within the scope of the technical idea included in the specification and drawings of the present invention should be construed as being included in the scope of the present invention.

10: facility frame
100: scrubber housing
200: blower unit
210: blowing pipe
220: blower
230: stack
300: wet pretreatment unit
310: casing
311: casing body part
312: shear coupling flange
313: rear coupling flange
320: contaminant removal module
321: contaminant removal member
330: washing liquid inflow blocking module
331: gas passage hole
332: bulkhead member
400: ionizer unit
410: ionizer
420: high voltage supply
500: charging unit
510: casing
520: charging module
521: charging support
521a: cleaning solution supply path
521b: cleaning liquid nozzle
522: electrification brush
600: cleaning liquid supply-processing device unit
610: cleaning liquid storage tank
620: washing liquid pump
630: cleaning liquid supply pipe
640: cleaning liquid nozzle
650: cleaning solution supply line for charging device
660: cleaning fluid discharge pipe
670: joint for pipe alignment

Claims (9)

delete a scrubber housing configured to allow pollutant-containing gas to flow in and to discharge treated gas;
a blower unit configured to communicate with the gas discharge side of the scrubber housing and discharge the clean gas processed in the scrubber housing to the outside;
a wet pre-treatment unit provided at a front side inside the scrubber housing and configured to pre-process contaminant-containing gas;
an ionizer unit configured to ionize contaminants and fine water particles in the gas being treated by the wet pretreatment unit;
a charging device unit configured to remove contaminants and fine moisture by charging the contaminants and fine moisture ionized by the ionizer unit; and
A cleaning liquid supply-processing device unit for supplying cleaning liquid to the scrubber housing and treating the cleaning liquid disposed in the scrubber housing;
The wet pretreatment device unit includes a casing in which the gas containing pollutants can flow, and is provided in the casing, and uses a venturi effect with respect to the gas containing pollutants introduced and the sprayed cleaning liquid to treat the gas containing pollutants. A contaminant removal module configured to mix contaminants and a cleaning solution in the tank, firstly remove and pass the contaminants, and a contaminant-containing cleaning solution provided at the rear of the contaminant removal module and introduced from the contaminant removal module Including a washing liquid inflow blocking module configured to block by inertial collision force and allow gas to pass,
The casing includes a casing body portion open on the front and rear surfaces, and a front coupling flange portion and a rear coupling flange portion formed by extending outwardly from the front and rear ends of the casing body portion,
The pollutant removal module is composed of a plurality of pollutant removal members arranged with a predetermined gap in a direction perpendicular to the flow direction of the pollutant-containing gas,
The contaminant removal member is formed in a pipe shape of a semicircular or circular cross section or a “V” shape in cross section, and the opening is disposed toward the washing liquid inflow blocking module. Characterized in that
Wet electrostatic precipitators.
According to claim 2,
The blower unit includes a blower pipe connected to the outlet of the scrubber housing, a blower provided at one end of the blower pipe, and a stack connected to the blower,
The ionizer unit is provided on the downstream side of the wet pretreatment unit from the inside of the scrubber housing, and an ionizer configured to ionize pollutants and fine water particles in the gas with negative ions by corona discharge, and the outside of the scrubber housing Characterized in that it includes a high voltage supply device provided on one side and configured to supply a direct current high voltage to the ionizer
Wet electrostatic precipitators.
delete delete According to claim 2,
The washing liquid inflow blocking module is composed of a partition wall member formed in a wave form and having a plurality of gas passage holes, disposed in parallel with the pollutant removal module, and having a valley portion facing the pollutant removal module,
The barrier rib member is formed in a “V”-shaped waveform or a semicircular ring-shaped waveform.
Wet electrostatic precipitators.
According to claim 6,
The gas passage holes are symmetrical to each other and formed in the same size on both side walls based on the valley of the partition member,
Characterized in that the trough of the barrier rib member is arranged on the same line as the gap between the two neighboring contaminant removal members.
Wet electrostatic precipitators. According to claim 2 or 3,
The charging device unit includes a casing formed to allow gas flow, and a plurality of charging modules provided at intervals in the casing,
The charging module includes a charging support having a circular or polygonal cross-section in which a cleaning liquid supply path is formed on a longitudinal central axis and a plurality of cleaning liquid injection holes are formed in a direction orthogonal to the cleaning liquid supply path, and provided on an outer surface of the charging support. Including a plurality of charging brushes that become,
Characterized in that at least one of the casing and the charging module is provided grounded
Wet electrostatic precipitators.
According to claim 8,
The cleaning liquid supply-processing device unit,
a cleaning liquid storage tank provided at one lower side of the scrubber housing;
a washing liquid pump provided at one side of the washing liquid storage tank to pump and circulate the washing liquid;
a cleaning liquid supply pipe supplying the cleaning liquid pumped by the cleaning liquid pump to the scrubber housing;
a cleaning liquid nozzle connected to one end of the cleaning liquid supply pipe and provided at a front side of the wet pre-processing unit to inject a cleaning liquid into the wet pre-processing unit;
a cleaning liquid supply pipe for a charging device connected to the cleaning liquid supply pipe and configured to supply a cleaning liquid to the cleaning liquid supply path of the charging support; and
It is provided between the scrubber housing and the cleaning liquid storage tank, and at least one cleaning liquid discharge pipe provided to discharge the cleaning liquid from the scrubber housing to the cleaning liquid storage tank; characterized in that it comprises a
Wet electrostatic precipitators.

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