KR20240033756A - Functional dust collecting plate for electric precipitator, method for manufactureing the fuctional dust collecting plate and electric dust collecting system - Google Patents

Abstract

The present invention relates to a functional dust collection plate of an electrostatic precipitator, a method of manufacturing the functional dust collection plate, and an electric dust collection system. The functional dust collection plate of an electrostatic precipitator according to the present invention includes an electrically conductive material to which a high voltage is applied or is grounded. It is characterized by comprising a dust collection layer and a functional material and comprising a functional layer coated on the dust collection layer.

Description

Functional dust collection plate of electrostatic precipitator, method of manufacturing the functional dust collection plate, and electrostatic dust collection system

The present invention relates to a functional dust collection plate of an electrostatic precipitator, a method of manufacturing the functional dust collection plate, and an electrostatic dust collection system. More specifically, the present invention relates to a functional dust collection plate of an electrostatic precipitator coated with a functional material for antiviral, antibacterial, deodorizing, greenhouse gas reduction, etc. It relates to a functional dust collection plate of an electric dust collector that provides additional functions to the dust collection plate in addition to the existing dust collection function of collecting dust and facilitates regeneration of the functional layer, a manufacturing method of the functional dust collection plate, and an electric dust collection system.

As environmental destruction due to industrial development progresses, air quality continues to worsen, and recently, concerns about fine dust and ultrafine dust have been growing. Furthermore, various problems related to air, such as airborne transmission of infectious substances such as coronaviruses, bad odors, and greenhouse gases (e.g., carbon dioxide), are receiving great attention.

To solve this problem, a variety of air conditioners or air purifiers are being developed. Methods for purifying air can be largely divided into filter-type methods and electrostatic dust collection methods.

In the case of the filter method, the air is purified by collecting fine dust in a filter with micropores. In addition, the filter can be coated with antiviral/antibacterial substances to provide other functionality in addition to fine dust collection. However, in the filter-type method, it is difficult to supply a large volume of purified air to users because air purification performance and pressure loss are proportional to each other, and there is a problem in that the used filter must be discarded and replaced after a certain period of use.

In the case of the electrostatic dust collection method, the differential pressure is low and the dust collection plate can be used without replacement by cleaning, so it can solve the problems of the filter method. However, in the case of the electrostatic dust collection method, it is only used to collect fine dust, so it can be used to collect microbial particles such as viruses and bacteria. It was not possible to treat various pollutants in the air, including. Therefore, there is a problem that a separate device must be installed in order to provide functionality other than fine dust collection.

An electrostatic precipitator imparts electrical properties to floating particles in the charged part and collects floating particles in the dust collection plate using electrical attraction of opposite polarity in the dust collection part. Bio-fine dust, such as bacteria and viruses in the air, can also be collected on the dust collection plate. However, the bio-fine dust collected on the dust collection plate uses the organic matter contained in the fine dust accumulated on the dust collection plate as nutrients to reproduce and, if re-spread, seriously reeks of indoor air. It may be contaminated.

Accordingly, the present invention seeks to propose a method that can provide functionality to the dust collection plate of an electric precipitator to provide various functions such as antiviral, antibacterial, deodorizing, and greenhouse gas reduction in addition to the existing fine dust collection.

Republic of Korea Patent No. 10-0878683

Therefore, the purpose of the present invention is to solve such conventional problems. By coating the dust collection plate of an existing electric dust collector with a functional layer, the electric dust collection function is maintained, and at the same time, the functionalities such as antibacterial, antiviral, deodorizing, and greenhouse gas reduction are achieved. The purpose of the present invention is to provide a functional dust collection plate of an electrostatic precipitator, a method of manufacturing the functional dust collection plate, and an electric dust collection system.

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

The above object is, according to the present invention, in the dust collection plate of an electric precipitator, a dust collection layer containing an electrically conductive material to which a high voltage is applied or grounded; And it can be achieved by a functional dust collection plate of an electric dust collector, which includes a functional material and a functional layer coated on the dust collection layer.

Here, the functional layer may be formed by coating a fibrous support containing the functional material on the dust collection layer.

Here, the fiber-shaped support may be carbon fiber.

Here, the functional material may be at least one of an antibacterial material, an antiviral material, a deodorizing material, and a greenhouse gas reduction material.

Here, the functional layer can be removed and then re-coated.

In addition, the above object is to provide a method for manufacturing a dust collection plate of an electric precipitator according to the present invention, including the steps of preparing a dust collection layer containing an electrically conductive material to which a high voltage is applied or grounded; and coating the dust collection layer with a functional layer containing a functional material.

Here, the step of coating the functional layer on the dust collection layer may be performed using an electrospinning method.

Here, the functional layer can be formed by mixing the functional material into a fibrous support and electrospinning it.

Here, removing the functional layer of the dust collection plate after use; And it may further include the step of recoating the functional layer on the dust collection layer.

In addition, the above object is an electrostatic precipitator including the above-described dust collection plate according to the present invention; And it can be achieved by an electric dust collection system including a coating unit that re-coats the functional layer on the dust collection layer from which the functional layer has been removed after use.

The coating unit may include an electrospinning device that coats the functional layer on the dust collection layer using an electrospinning method.

According to the functional dust collection plate of the electrostatic precipitator of the present invention as described above, the manufacturing method of the functional dust collection plate, and the electric dust collection system, the electrostatic precipitator can additionally perform functions such as antibacterial, antiviral, deodorizing, and greenhouse gas reduction in addition to the fine dust collection function. There is an advantage to being able to do this.

In addition, there is an advantage that the functional layer can be easily removed when cleaning the dust collection plate and the functional dust collection plate can be reused after recoating.

1 shows an example of an electrostatic precipitator according to an embodiment of the present invention.
Figure 2 is a diagram showing the process of forming a functional layer on a dust collection layer using an electrospinning method.
Figure 3 is a photograph showing before and after forming a functional layer in the dust collection layer using electrospinning.
Figure 4 is an enlarged photograph of the functional layer formed by electrospinning at different coating times using an electron microscope.
Figure 5 is a photograph showing the results of Energy dispersive X-ray (EDX) mapping analysis of the functional layer formed by varying the coating time using the electrospinning method.
Figure 6 is a photograph showing how the functional layer of the functional dust collection plate according to the present invention is easily removed.
Figure 7 is a graph showing the results of an experiment on the antiviral effect against the MS2 bacteriophage virus when an antiviral material (zinc oxide) was coated on a dust collection plate according to the present invention.
Figure 8 is a flow chart showing a method of manufacturing a functional dust collection plate for an electric dust collector according to an embodiment of the present invention.
9 shows an electrostatic precipitator system according to one embodiment of the present invention.

Specific details of the embodiments are included in the detailed description and drawings.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various different forms. The present embodiments are merely provided to ensure that the disclosure of the present invention is complete and to be understood by those skilled in the art. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Hereinafter, the present invention will be described with reference to drawings for explaining a functional dust collection plate of an electrostatic precipitator, a method of manufacturing the functional dust collection plate, and an electric dust collection system according to embodiments of the present invention.

1 shows an example of an electrostatic precipitator according to an embodiment of the present invention.

The electric precipitator 100 according to an embodiment of the present invention may be configured to include a charging part 110 and a dust collecting part 120.

The housing 150 provides a path through which contaminated air moves, and the charging unit 110 and the dust collection unit 120 may be arranged in order along the moving direction of the air. Additionally, a fan 130 may be disposed at the front or rear of the housing 150 to create a flow of air within the housing 150.

The charging unit 110 is installed on the side where polluted air flows in and generates ions to charge fine particles such as dust in the polluted air. The charging unit 110 may include an ion generator 115 made of a plurality of carbon fiber 112 strands and a voltage application device 118 that applies a high voltage (current) to the ion generator 115.

When a high voltage (current) is applied to the carbon fiber 112 from the voltage application device 118, a large amount of ions are generated from the carbon fiber 112. At this time, (+) ions or (-) ions are generated depending on the type of current applied from the voltage application device 118.

In this embodiment, a case in which ions are generated by applying a high voltage (current) to the ion generator 115 made of carbon fiber 112 is shown, but the corona discharge generated by applying a high voltage between the discharge electrode and the corresponding ground electrode is shown. Ions can also be generated by

The dust collection unit 120 collects fine particles charged by ions generated by the charging unit 110 onto the dust collection plate 125 using electrostatic force.

As shown, the dust collection unit 120 arranges a plurality of dust collection plates 125a and 125b in parallel to be spaced apart, and generates electrostatic force by forming a potential difference between neighboring dust collection plates 125a and 125b. Therefore, the charged particles in the charged portion 110 can be moved by the electrostatic force between the dust collection plates 125a and 125b and collected in the dust collection plates 125a and 125b. At this time, by alternately arranging the first dust collection plate 125a to which a high voltage is applied and the second dust collection plate 125b to which a voltage of ground or opposite polarity is applied to the plurality of dust collection plates 125a and 125b arranged in parallel, the neighboring dust collection plates 125a and 125b are arranged in parallel. Electrostatic force can be generated by forming a potential difference between the dust collection plates 125a and 125b.

Although the drawing shows a plurality of dust collection plates 125a and 125b arranged in parallel in the vertical direction, they may also be arranged in parallel in the horizontal direction. In addition, the illustrated dust collection plates (125a, 125b) are simplified to explain the concept of the present invention, and the number of dust collection plates (125a, 125b) shown and the distance between the dust collection plates (125a, 125b) may differ from the actual.

Since the configuration of the electrostatic precipitator 100 described with reference to FIG. 1 is no different from the existing electrostatic precipitator configuration, detailed description thereof will be omitted. Additionally, the configuration of the electrostatic precipitator in the present invention is not limited to the form shown, and may be configured like other known types of electrostatic precipitator. For example, the illustrated electric precipitator 100 shows the configuration of a two-stage electrostatic precipitator in which the charged part 110 and the dust collecting part 120 are separated, but it is in the form of a one-stage electric precipitator in which the charged part and the dust collecting part are formed integrally. It may be formed as

The dust collection plate 125 of the electric dust collector according to the present invention is a functional dust collection plate 125 that not only collects fine particles including dust using electrostatic force, but also has functions such as eradicating viruses and bacteria floating in the air, deodorizing, or reducing greenhouse gases. It can be.

Hereinafter, the functional dust collection plate 125 according to an embodiment of the present invention will be described in more detail.

Figure 2 is a diagram showing the process of forming a functional layer on a dust collection layer using electrospinning, and Figure 3 is a photograph showing before and after forming a functional layer using electrospinning on a dust collection layer. 4 is an enlarged photo of the functional layer formed by varying the coating time using the electrospinning method using an electron microscope, and Figure 5 is an Energy dispersive X-ray (EDX) mapping analysis of the functional layer formed by varying the coating time by the electrospinning method. A photo showing the result, Figure 6 is a photo showing the functional layer of the functional dust collection plate according to the present invention being easily removed, and Figure 7 is a photo showing the MS2 bacteriophage when the antiviral material (zinc oxide) was coated on the dust collection plate according to the present invention. This is a graph showing the results of an experiment on the antiviral effect against viruses.

The functional dust collection plate 125 of the electric precipitator according to an embodiment of the present invention may be formed of a dust collection layer 126 and a functional layer 127.

The dust collection layer 126 may have the same configuration as the dust collection plate of an existing electric dust collector. For example, the dust collection layer 126 may be formed of an electrically conductive metal plate. Additionally, the dust collection layer 126 may be formed by coating a flexible film made of plastic with an electrically conductive material such as carbon. The dust collection layer 126 constructed in this way has a ductility that bends easily and can be constructed at a very light and low cost.

The functional layer 127 includes a functional material and may be coated on at least one side of the dust collection layer 126. The functional material may be an antiviral or antibacterial material. Alternatively, it may be a deodorizing material that removes bad odor. Alternatively, it may be a material that reduces greenhouse gases such as carbon dioxide in the air. Examples of antiviral or antibacterial substances may be zinc oxide and magnesium oxide.

At this time, the functional layer 127 may be formed by coating the dust collection layer 126 with a support in the form of a fiber containing a functional material. For example, as shown in FIG. 2, the functional layer 127 can be formed on the dust collection layer 126 by mixing a functional material with carbon fiber, which is a support, and using electrospinning.

Figure 3 (b) shows a functional layer 127 formed by combining zinc oxide, an antibacterial/antiviral material, with carbon fiber using an electrospinning method on the film-shaped dust collection layer 126. When forming the functional layer 127 using an electrospinning method, the functional layer 127 can be uniformly coated over the large area of the dust collection layer 126.

In addition, since the functional layer 127 is formed by combining a functional material with a support in the form of a fiber, the functional layer 127 is not easily separated due to the support during operation of the electrostatic precipitator 100. In addition, as shown in FIG. 6, the entire functional layer 127 can be easily peeled off with tweezers, etc., so the functional dust collection plate 125 can be easily reused by removing the functional layer 127 and then recoating it. .

Figures 4 and 5 show enlarged SEM photographs and EDX mapping analysis results when the functional layer 127 was formed by combining zinc oxide with carbon fiber at different coating times using the electrospinning method. It can be confirmed that the carbon fiber-type supports are well coated on the dust collection layer 126, and it can be confirmed that the zinc oxide nanoparticles are evenly distributed on the support. Furthermore, it can be seen that the concentration of zinc oxide nanoparticles and the content of carbon fiber increase with coating time.

Figure 7 shows the results of testing the antiviral performance against attached microorganisms in the case of forming the antiviral functional layer 127 using zinc oxide as in a general filter and the present invention. An antiviral performance evaluation against MS2 bacteriophage was conducted on carbon fiber containing zinc oxide nanoparticles and a general filter. When carbon fiber containing zinc oxide nanoparticles was included, the antiviral efficiency was close to 95%. can confirm.

In this way, the functional dust collection plate 125 according to the present invention coats the functional layer 127 on the dust collection layer 126 to which electricity is applied, so that it not only collects fine dust (particles) by electric dust collection, but also has antiviral, antibacterial, and deodorizing properties. It can perform additional functions such as reducing greenhouse gases. In addition, the functional layer 127 can be easily removed when cleaning the dust collection plate 125, so if the performance of the functional layer 127 is poor, the dust collection plate 125 can be easily removed by recoating after removing the functional layer 127. It can be reused.

Figure 8 is a flow chart showing a method of manufacturing a functional dust collection plate for an electric dust collector according to an embodiment of the present invention.

A method of manufacturing a dust collection plate of an electrostatic precipitator according to an embodiment of the present invention includes preparing a dust collection layer 126 containing an electrically conductive material to which a high voltage is applied or grounded (S210) and a functional layer 127 containing a functional material. It may include coating the dust collection layer 126 (S220).

As described above, the dust collection layer 126 may correspond to an existing dust collection plate and may be formed of a metal plate or a flexible film made of plastic coated with an electrically conductive material such as carbon.

After preparing the dust collection layer 126, a functional layer containing a functional material for performing other functions such as antiviral, antibacterial, deodorizing, and greenhouse gas reduction in addition to electric dust collection of fine particles on at least one side of the dust collection layer 126. (127) can be coated on the dust collection layer (126). At this time, in the present invention, the functional layer 127 may be coated on the dust collection layer 126 in the form of a functional material composited with a fibrous support using an electrospinning method. Accordingly, the functional layer 127 maintains its coating state without being separated from the dust collection layer 126, and the functional layer 127 can be removed by peeling off the dust collection layer 126 with relatively little force.

In addition, if the performance of the functional dust collection plate (125) deteriorates due to accumulation of dust, viruses, etc. after using the functional dust collection plate (125), the functional layer (127) of the functional dust collection plate (125) is peeled off and removed, and after cleaning, the dust collection layer (126) has its function. The layer 127 can be re-coated and used.

9 shows an electrostatic precipitator system according to one embodiment of the present invention.

The electrostatic precipitator system according to an embodiment of the present invention may include an electrostatic precipitator 100 and a coating unit 200.

Since the configuration of the electrostatic precipitator 100 has been described with reference to FIG. 1, detailed description thereof will be omitted.

After using the electrostatic precipitator 100 for a certain period of time, fine dust may accumulate on the dust collection plate 125 and dust collection performance may deteriorate. In addition, the antibacterial, antiviral, deodorizing, or greenhouse gas reduction performance of the functional material formed in the functional layer 127 of the dust collection plate 125 may decrease as the dust collection plate 125 is used over time.

Accordingly, the functional dust collection plate 125 is separated from the electrostatic precipitator 100, the functional layer 127 of the separated functional dust collection plate 125 is peeled off, and the functional layer 127 is re-coated in the coating portion 200. You can. The coating unit 200 may include an electrospinning device that coats the functional layer 127 using the electrospinning method described above with reference to FIG. 2 . After recoating the functional layer 127 in the coating unit 200, the dust collection plate 125 can be reused by mounting it on the electrostatic precipitator 100.

The electrostatic precipitator system according to the present invention can be included in large-scale air quality purification systems such as subway stations and thermal power plants.

The scope of the present invention is not limited to the above-described embodiments, but may be implemented in various forms of embodiments within the scope of the appended claims. It is considered to be within the scope of the claims of the present invention to the extent that anyone skilled in the art can make modifications without departing from the gist of the invention as claimed in the claims.

100: electrostatic precipitator
110: lower charge part
112: carbon fiber
115: Ion generator
118: Voltage application device
120: Dust collection unit
125: dust collection plate
126: Dust collection layer
127: Functional layer
130: fan
150: housing
200: Coating part

Claims (11)

In the dust collection plate of an electrostatic precipitator,
A dust collection layer containing an electrically conductive material to which a high voltage is applied or grounded; and
A functional dust collection plate of an electric dust collector, comprising a functional material and a functional layer coated on the dust collection layer. According to claim 1,
The functional layer is a functional dust collection plate of an electric dust collector formed by coating a support in the form of a fiber containing the functional material on the dust collection layer. According to clause 2,
The fiber-shaped support is a functional dust collection plate of an electrostatic precipitator made of carbon fiber. According to claim 1,
The functional material is a functional dust collection plate of an electrostatic precipitator, wherein the functional material is at least one of an antibacterial material, an antiviral material, a deodorizing material, and a greenhouse gas reduction material. According to claim 1,
A functional dust collection plate of an electrostatic precipitator wherein the functional layer can be removed and then re-coated. In the method of manufacturing a dust collection plate of an electrostatic precipitator,
Preparing a dust collection layer containing an electrically conductive material to which a high voltage is applied or grounded; and
A method of manufacturing a functional dust collection plate for an electric dust collector, comprising the step of coating the dust collection layer with a functional layer containing a functional material. According to clause 6,
A method of manufacturing a functional dust collection plate for an electrostatic precipitator in which the step of coating the functional layer on the dust collection layer is performed by an electrospinning method. According to clause 7,
A method of manufacturing a functional dust collection plate for an electrostatic precipitator in which the functional layer is formed by mixing the functional material in a fibrous support and electrospinning it. According to clause 6,
Removing the functional layer of the dust collection plate after use; and
A method of manufacturing a functional dust collection plate for an electric dust collector further comprising the step of recoating the functional layer on the dust collection layer. An electrostatic precipitator including the dust collection plate of any one of claims 1 to 5; and
An electric dust collection system comprising a coating unit for re-coating a functional layer on the dust collection layer from which the functional layer has been removed after use. According to claim 10,
The coating unit is an electrospinning system comprising an electrospinning device that coats the functional layer on the dust collection layer using an electrospinning method.

Images