KR102039917B1 - Dust reduction pretreatment device and pretreatment system using the same - Google Patents

Abstract

Disclosed are a dust reduction pretreatment device and a pretreatment system using the same. The dust reduction pretreatment device comprises: a duct providing a path through which polluted air is introduced to a wet prevention device; an attachment unit located on the path, absorbing water, and allowing dust contained in the polluted air on the path to be aggregated and attached thereto by the absorbed water; and a spray unit for spraying water of a first pressure from a front end of the attachment unit toward the attachment unit, and allowing the water to be absorbed to the attachment unit, wherein the attachment unit is configured to be able to rotate, and increases a surface area in which the sprayed water is absorbed and an amount of the polluted air in contact with the absorbed water by a rotation. Accordingly, before the polluted air is introduced to the wet prevention device, dust contained in the polluted air is partially removed, so the polluted air can be introduced to the wet prevention device in a state where the concentration of the dust contained in the polluted air is reduced.

Description

Dust reduction pretreatment device and pretreatment system using the same

The present invention is a dust reduction pretreatment apparatus for pretreatment to reduce the concentration of dust contained in the contaminated air in the step before the contaminated air is introduced into the wet prevention device for removing the dust and gaseous substances contained in the contaminated air and It relates to a pretreatment system using the same.

Contaminated air containing dust and gaseous substances should be purified and discharged before being discharged to the outside of the facility. In Korea, the Air Environment Conservation Act has been enacted.

Therefore, in a facility where polluted air is generated, air pollution prevention devices such as dust collectors, adsorption towers, and scrubbers are installed to purify the polluted air, among which wet prevention devices such as scrubbers have dust. And because it has the advantage that can be processed at the same time gaseous materials are used a lot.

However, the conventional scrubber may not be sufficiently removed when the concentration of dust contained in the contaminated air introduced for the purification of the air, the dust is accumulated in the injection nozzle for spraying the injection liquid is spray nozzle There is a problem that can be blocked.

In particular, when the injection nozzle is clogged, the injection liquid is not injected, the contaminated air is not purified smoothly, there is also a problem that the maintenance cost of the facility increases due to frequent maintenance and replacement of the injection nozzle.

Korea Patent Registration No. 10-1372106 "Preodorous substance pretreatment system for flushing prevention facility"

The present invention has been made to solve the above problems, the object of the present invention is the pre-treatment to reduce the concentration of dust contained in the contaminated air, before the contaminated air is introduced into the wet prevention device, contaminated A dust reduction pretreatment device and pretreatment using the same to reduce dust and gaseous substances contained in the air to be sufficiently removed from the wet prevention device, and to reduce the accumulation of dust in the injection nozzle, reducing the maintenance cost of the facility In providing a system.

In addition, another object of the present invention is to provide a dust reduction pretreatment apparatus and a pretreatment system using the same to reduce the water consumption by circulating and reused water used in the dust reduction pretreatment device and the wet prevention device.

Dust reduction pretreatment apparatus according to an embodiment of the present invention to achieve the above object, in the wet prevention device for removing dust and gaseous substances contained in the contaminated air, in the step before the contaminated air is introduced, A pretreatment apparatus for pretreatment to reduce the concentration of dust contained in contaminated air, the pretreatment apparatus comprising: a duct providing a path for introducing the contaminated air into the wet prevention device; An attachment portion located on the path and absorbing water to allow the absorbed water to aggregate and attach dust contained in the contaminated air on the path; And an injection unit for injecting water at a first pressure toward the attachment unit from the front end of the attachment unit to be absorbed by the attachment unit, wherein the attachment unit is provided to be rotatable and through the rotation, the injection unit The surface area where water is absorbed is widened, and the amount of contaminated air contacting the absorbed water is increased.

At this time, the dust reduction pretreatment device according to an embodiment of the present invention by spraying water of the second pressure toward the attachment portion from the rear end of the attachment portion. The dust attached to the attachment portion is detached, the attachment portion to wash the attachment portion; further comprising, the second pressure may be higher than the first pressure.

The attachment part may include a rotation brush provided to be rotatable by a driving force, absorbing the injected water, and affixing the dust by the absorbed water. And a driving module configured to generate the driving force and transmit the driving force to the rotary brush, wherein the rotary brush rotates at a first speed to widen the surface area where the sprayed water is absorbed and to contact the absorbed water. The amount of contaminated air is increased, but when rotated at a second speed, the dust-attached water is desorbed by centrifugal force, and the second speed may be higher than the first speed.

In addition, the spraying unit, the washing unit and the rotary brush are provided in pairs, respectively, each spraying unit and each washing unit, respectively spraying water toward the respective rotary brush, the pair of rotation The brushes can be rotated in different directions.

And the rotating brush is provided to be detachable, maintenance can be easy.

In addition, the rotary brush is made of polypropylene (polypropylene) as a material, excellent in elasticity, and may be resistant to acids and alkalis.

And the rotating brush is made of a nylon (nylon) material, it is excellent in elasticity, flexibility, wear resistance, and may be resistant to alkali.

On the other hand, the dust reduction pretreatment system according to an embodiment of the present invention, a wet prevention device for removing dust and gaseous substances contained in the contaminated air; And a dust reduction pretreatment device for pretreating the contaminated air to reduce the concentration of dust contained in the contaminated air in a step before the contaminated air enters the wet prevention device. The dust reduction pretreatment device includes: A duct connected to a wet containment device to provide a path for the contaminated air to enter the wet containment device; An attachment part located inside the duct and absorbing water so that the absorbed water aggregates and attaches dust contained in the contaminated air on the path; An injection unit for injecting water of a first pressure toward the attachment unit from the front end of the attachment unit to be absorbed by the attachment unit; And spraying water at a second pressure from the rear end of the attachment portion toward the attachment portion. And a washing part for cleaning the attachment part by detaching dust attached to the attachment part, wherein the second pressure is higher than the first pressure, and the attachment part is provided to be rotatable and rotates. Through this, the surface area where the sprayed water is absorbed may be widened, and the amount of contaminated air contacting the absorbed water may be increased.

At this time, the wet prevention device, the body of the upper end of the wet prevention device, is provided with an inlet connected to the duct, the pre-treated air is introduced into the inside, the outlet is provided on the upper side, pre-treated inside A first housing configured to discharge the purified air to the outside when the air is purified; A porous polling layer positioned inside the first housing and provided in a multi-layered structure so that dust and gaseous substances included in the pretreated air are removed during the passage of the pretreated air; A spray tube positioned above each of the porous polling layers and spraying water toward each of the porous polling layers; A second housing configured to form a body at a lower end of the wet prevention device, and when the water sprayed from the spray pipe falls, the dropped water is received; And a demister positioned inside the first housing and provided below the discharge port to prevent fine liquid particles from being discharged together when the purified air is discharged.

And the dust reduction pretreatment apparatus according to an embodiment of the present invention, the water is stored, the storage tank for supplying the stored water to the dust reduction pretreatment system; And a supply pipe for supplying the stored water and the accommodated water to the injection pipe, the injection part, and the washing part, wherein the supply pipe has one side connected to the reservoir and the other side connected to the washing part. A first supply pipe configured to supply the stored water to the washing unit; A second supply pipe connected to one side of the second housing and the other side of the injection unit to supply the received water to the injection unit; And a third supply pipe connected to one side of the second housing and the other side connected to the injection pipe so that the received water is supplied to the injection pipe.

In addition, the water sprayed from the washing unit and the spray unit may be accommodated in the second housing through the duct and reused.

As a result, before the contaminated air is introduced into the wet preventive device, the dust contained in the contaminated air is partially removed, and the contaminated air is wet prevented by the concentration of the dust contained in the contaminated air. Can be introduced into

In addition, contaminated air flows into the wet prevention device while the concentration of dust contained in the contaminated air is reduced, so that the dust and gaseous substances included in the contaminated air can be sufficiently removed from the wet prevention device, and the injection nozzle The accumulation of dust can be reduced, reducing the maintenance cost of the facility.

And the water used can be circulated and reused, so that the water consumed in the dust abatement pretreatment system can be reduced.

1 is a block diagram schematically illustrating a dust reduction pretreatment system according to an exemplary embodiment of the present invention.
2 is a view showing in more detail the dust reduction pretreatment system according to an embodiment of the present invention.
3 is a view illustrating in more detail the attachment portion according to an embodiment of the present invention.
4 is a view illustrating in more detail the duct according to an embodiment of the present invention.
5 is a view illustrating a path of water according to an embodiment of the present invention.

Hereinafter, with reference to the drawings will be described in more detail with respect to the present invention. The embodiments introduced below are provided as an example to sufficiently convey the spirit of the present invention to those skilled in the art to which the present invention pertains. The invention is not limited to the embodiments described below and may be embodied in other forms. Parts not related to the description are omitted in the drawings in order to clearly describe the present invention, in the drawings, the width, length, thickness, etc. of the components may be exaggerated for convenience. Like reference numerals denote like elements throughout the specification.

1 is a block diagram schematically illustrating a dust reduction pretreatment system according to an embodiment of the present invention, and FIG. 2 is a diagram illustrating a dust reduction pretreatment system according to an embodiment of the present invention in more detail. One drawing.

Hereinafter, a dust reduction pretreatment system (hereinafter, referred to as a "pretreatment system") according to an embodiment of the present invention will be described with reference to FIGS. 1 to 2.

In the pretreatment system according to the present embodiment, before the contaminated air is introduced into the wet prevention device 100, the pretreatment system is pretreated so that the concentration of dust contained in the contaminated air is reduced, thereby contaminating the wet prevention device 100. It is provided to sufficiently remove the dust and gaseous substances contained in the air, to reduce the accumulation of dust in the injection nozzle, to reduce the maintenance cost of the facility.

To this end, the pretreatment system may include a wet prevention device 100, a pretreatment device 200, a reservoir 300, and a supply pipe 400.

Here, the wet prevention device 100 is a device capable of simultaneously removing contaminated air dust and gaseous substances, and includes a scrubber, a wet electrostatic precipitator, and the like, and the wet prevention device 100 in the present embodiment is also a scrubber, a wet type. Although it may be implemented in various forms, such as an electric dust collector, for convenience of description, it demonstrates below with the scrubber as an example.

The wet prevention device 100 removes the dust and gaseous substances contained in the contaminated air before the contaminated air containing the dust and gaseous substances are discharged to the outside of the facility, so that the purified air can be discharged to the outside. Is prepared for.

To this end, the wet protection device 100 may include a first housing 110, a porous polling layer 120, a spray pipe 130, a second housing 140, and a demister 150. have.

The first housing 110, by constituting the body of the upper end of the wet prevention device 100, provides a path for the contaminated air to be purified and discharged for the removal of dust and gaseous substances, the contaminated air One side is opened so that the inlet is formed, and the upper side is opened so that the purified air is discharged so that the outlet may be formed.

The porous polling layer 120 may be positioned inside the first housing 110 and may have a multi-layered structure to remove dust and gaseous substances in the course of passing contaminated air.

Injection pipe 130 may be provided in plurality, each injection pipe 130 is located above each porous polling layer 120, to spray water toward each porous polling layer 120, respectively Water may be absorbed into the porous polling layer 120.

At this time, by the water absorbed by the porous polling layer 120, dust and gaseous substances may be removed in the process of passing the polluted air through the porous polling layer 120, the type of contaminated air generated inside the facility Accordingly, by allowing the liquid other than water to be injected from the injection tube 130, it is possible to efficiently remove the gaseous substances contained in the contaminated air.

Here, the kind of contaminated air means the kind of pollutant contained in the air.

The second housing 140 forms a body of the lower end of the wet prevention device 100, and after the water sprayed from the spraying unit 230 is absorbed into the porous polling layer 120, the porous housing layer 120 is removed from the porous polling layer 120. When falling, it may be provided to accommodate the dropped water.

That is, the body of the wet prevention device 100 is divided into the first housing 110 and the second housing 140, the first housing 110 is a portion for purifying and discharged the contaminated air introduced therein, The second housing 140 refers to a portion formed to accommodate the water used in the process of purifying the contaminated air when the water falls downward.

The demister 150 is positioned inside the first housing 110 and is provided below the discharge port to prevent the fine liquid particles from being discharged together when the purified air is discharged.

That is, the demister 150 is located above the injection unit 230 located at the top.

On the other hand, the pretreatment device 200 is connected to the front end of the wet prevention device 100, the pretreatment to reduce the concentration of dust contained in the contaminated air in the step before the contaminated air flows into the wet prevention device (100) Is prepared to.

To this end, the pretreatment device 200 may include a duct 210, the attachment portion 220, the injection unit 230 and the washing unit 240.

Duct 210 is connected to the front end of the wet preventive device 100, is provided to provide a path for the contaminated air to enter the wet preventive device 100, in addition to the more detailed description of the duct 210 Will be described later with reference to FIGS. 4 to 5.

The attachment part 220 is positioned inside the duct 210 and absorbs the water sprayed from the sprayer 230, so that the dust contained in the contaminated air passing through the path of the duct 210 is absorbed in the water. It can be agglomerated and attached, and other detailed description of the attachment portion 220 will be described later with reference to FIG.

The injection unit 230 may spray water of the first pressure toward the attachment unit 220 at the front end of the attachment unit 220 to absorb the water injected into the attachment unit 220.

In this case, the water sprayed from the spraying unit 230 may cause the dust to be aggregated and adsorbed in the state absorbed by the attachment unit 220, but the sprayed water directly agglomerates and adsorbs the dust, and then the water adsorbed on the dust is absorbed. It may be attached to the attachment portion 220.

Here, the injection unit 230 may be provided in the form of a tube formed with a nozzle for injecting water.

The washing unit 240 sprays the water of the second pressure toward the attachment unit 220 at the rear end of the attachment unit 220, so that the dust attached to the attachment unit 220 is detached, so that the attachment unit 220 is detached. Can be washed.

At this time, the second pressure which is the pressure at which the washing unit 240 sprays water is higher than the first pressure, and the dust is attached to the washing unit 240 so that the dust is desorbed by the pressure of the water sprayed.

Here, the washing unit 240 is provided in the form of a tube formed with a nozzle to inject water, the nozzle 240 is formed in the washing unit 240 in order to spray the water of sufficient high pressure spray unit 230 The diameter may be smaller than that of the nozzle formed in the FIG.

On the other hand, the reservoir 300 is provided for storing the water used in the pretreatment system.

And the supply pipe 400, so that the water stored in the reservoir 300 is supplied to the washing unit 240, so that the water contained in the second housing 140 is supplied to the injection unit 230 and the injection tube 130. Is prepared for.

To this end, the supply pipe 400 may be provided with a first supply pipe 410, a second supply pipe 420, and a third supply pipe 430.

One side of the first supply pipe 410 is connected to the reservoir 300, the other side is connected to the washing unit 240, the water stored in the reservoir 300 may be supplied to the washing unit 240 body.

One side of the second supply pipe 420 may be connected to the second housing 140, and the other side thereof may be connected to the injection unit 230 so that the water received in the second housing 140 may be supplied to the injection pipe 130. have.

One side of the third supply pipe 430 may be connected to the second housing 140, and the other side thereof may be connected to the injection pipe 130 so that water received in the second housing 140 may be supplied to the injection pipe 130. have.

The water sprayed from the reservoir 300 to the washing unit 240 may be circulated and supplied to the spraying unit 230 and the spraying tube 130 to be reused, and the sprayed water may be supplied to the washing unit 240. The process of being recycled and reused will be described later with reference to FIG. 5.

Referring to FIG. 2, the air path according to the present embodiment will be described. First, contaminated air is introduced into the pretreatment device 200 at a stage before the wet prevention device 100 is introduced. The contaminated air introduced into the pretreatment apparatus 200 is agglomerated by the water absorbed by the attachment portion 220 and attached to the attachment portion 220, whereby the concentration of dust is reduced and pretreated. In addition, the pre-treated air is introduced into the wet prevention device 100, the gaseous substances and dust is removed from the inside of the wet prevention device 100 is purified and then discharged.

Figure 3a is a view showing a view of the attachment portion 220 from the upper side in order to explain in more detail the attachment portion 220 according to an embodiment of the present invention, Figure 3b is a view of the present invention In order to explain the attachment portion 220 according to an embodiment in more detail, the attachment portion 220 is a view showing a state viewed from the front in which contaminated air is introduced.

Hereinafter, the attachment part 220 according to an embodiment of the present invention will be described in more detail with reference to FIGS.

As described above, the attachment portion 220 absorbs the water injected from the injection portion 230, and agglomerates and adheres by the water absorbed dust contained in the contaminated air passing through the path of the duct 210. Be sure to

In this case, the attachment part 220 may be provided to be rotatable so that water sprayed from the fixed sprayer 230 may be evenly absorbed through the rotation, thereby increasing the surface area where the sprayed water is absorbed.

In addition, the attachment part 220 may rotate to increase the amount of contaminated air in contact with the absorbed water.

To this end, the attachment part 220 may include a rotary brush 221 and a drive module 222.

The rotary brush 221 is provided to be rotatable by the driving force, and is provided to absorb the water sprayed from the injection unit 230 and to allow the dust to aggregate and adhere to the water absorbed by the rotary brush 221.

At this time, the rotary brush 221 is provided to be detachable, to facilitate the cleaning or replacement, it can be easy to maintain.

For example, when the water supplied to the injection unit 230 and the injection tube 130 is circulated and reused, the water contained in the second housing 140 may be supplied to the injection unit 230 and the injection tube 130. However, depending on the type of contaminated air generated inside the facility, if another kind of liquid is to be injected from the injection pipe 130, the same liquid may be injected from the injection unit 230.

At this time, when the liquid injected from the injection unit 230 is acidic, the rotary brush 221 is made of a polypropylene material, it can be excellent in elasticity, and resistant to acids and alkalis.

In addition, when the liquid injected from the injection unit 230 exhibits an alkyl property, the rotating brush 221 may be made of a nylon material, and may be excellent in elasticity, flexibility, and wear resistance, and resistant to alkali.

Of course, even when the liquid injected from the injection unit 230 is water, the material of the rotary brush 221 may be polypropylene or nylon.

The driving module 222 is provided to generate the driving force and transmit the driving force to the rotating brush 221, so that the rotating brush 221 rotates.

Specifically, the driving module 222 refers to any configuration for generating a driving force such as a motor for generating a driving force, a gear wheel for transmitting the generated driving force, and a support for supporting them, and transmitting the driving force to the rotating brush 221. .

The driving module 222 may determine the rotation speed of the rotating brush 221 by adjusting the strength of the generated driving force.

When the driving speed of the rotating brush 221 is adjusted by adjusting the intensity of the driving force generated by the driving module 222, the rotating brush 221 rotates at a first speed at a low speed, thereby fixing the fixed injection part 230. It is possible to widen the surface area where water sprayed from is absorbed and to increase the amount of contaminated air in contact with the absorbed water.

In addition, when the rotational speed of the rotary brush 221 is adjusted, the rotary brush 221 is rotated at a second high speed, so that the water absorbed through the centrifugal force generated by the high-speed rotation is desorbed, In the process of desorption of water, dust adsorbed on the water may be desorbed together.

Here, the second speed is higher than the first speed, and the driving module 222 rotates the rotation brush 221 at the first speed in a normal time, but the rotation brush 221 rotates at the second speed at a predetermined period. In this way, the dust adsorbed on the rotating brush 221 may be detached.

As shown in FIG. 3, the spraying unit 230, the washing unit 240, and the rotating brush 221 may be provided in pairs, respectively.

When the spraying unit 230, the washing unit 240, and the rotating brush 221 are provided in pairs, respectively, the respective spraying units 230-1 and 230-2 and washing units 240-1 and 240-2 are provided. ) May be provided to spray water separately toward the respective rotary brushes (221-1, 221-2).

When the rotary brushes 221 are provided in pairs, the pair of rotary brushes 221-1 and 211-2 are rotated in different directions, such that the rotary brushes 221-1 and 211-2 are rotated in one direction. Is rotated, thereby preventing the flow of contaminated air in the duct 210 to be deflected to one side, thereby rotating brushes 221-1 and 211-2 in the course of passing the contaminated air through the path inside the duct 210. The area in contact with the can be made larger.

And, if necessary, three or more rotating brushes 221 may be provided. When three or more rotating brushes 221 are provided, the plurality of rotating brushes 221 may be arranged to form a plurality of ducts ( The contaminated air passing through the inside of the path 210 may be extended to contact the rotating brush 221.

4 is a view illustrating in detail the duct 210 according to an embodiment of the present invention, Figure 5 is a view showing for explaining the path of the water according to an embodiment of the present invention.

Hereinafter, the duct 210 according to an embodiment of the present invention will be described in more detail with reference to FIGS. 4 to 5, and the process of circulating water according to an embodiment of the present invention will be described.

The duct 210 according to the present embodiment, as described above, the duct 210 is connected to the front end of the wet prevention device 100, to provide a path for the contaminated air to enter the wet prevention device 100. Is prepared to.

In addition, the duct 210 is provided to allow the water sprayed from the spraying unit 230 and the washing unit 240 to flow into the second housing 140 to be received in the second housing 140 in addition to the above-described purpose. .

To this end, the duct 210 includes a first duct 211, a second duct 212, a third duct 213, a step 214, a fan 215, a drain pipe 216, and a strainer 217. can do.

The first duct 211 is a first inlet where contaminated air is introduced into the duct 210, and an inclined surface is inclined downward in a downward direction along a path through which contaminated air is introduced, thereby pretreating the contaminated air. It is provided to prevent the water used in the reverse flow to the front end of the pretreatment device 200.

The second duct 212 is provided so that the attachment part 220, the injection part 230, and the washing part 240 are positioned to perform a pretreatment process.

At this time, the water generated during the pre-treatment of the contaminated air in the second duct 212 is accumulated in the lower side of the second duct 212, the water accumulated in the lower side of the duct 210 is the first duct 211 Countercurrent to the front end of the pretreatment device can be prevented by the inclined surface of.

The second duct 212 may be provided to be connected to the first duct 211 so that the first air introduced through the first duct 211 may flow into the second duct 212.

The third duct 213 has one side connected to the second duct 212, the other side connected to the first housing 110, and the air pretreated in the second duct 212 is supplied to the wet prevention device 100. Is to be introduced, but is connected to the upper end of the second duct 212, it is possible to prevent the water accumulated in the lower side of the second duct 212 to enter the wet prevention device 100 through the third duct (213). .

The step 214 is formed to protrude upward from a lower surface of the third duct 213, and is formed at a portion where the third duct 213 is connected to the second duct 212, thereby forming the second duct 212. The rotating brush 221 rotates at a second speed in the interior thereof, so that the water desorbed in the process of desorbing water is reduced to flow into the wet prevention device 100 through the third duct 213, but the second The cross section between the duct 212 and the third duct 213 may be temporarily reduced, so that a Venturi effect may be generated to increase the inflow rate of air.

In addition, when the step 214 faces an inner space of the second duct 212, a surface thereof extends downward to a lower surface of the second duct 212, thereby forming a wall, whereby the rotating brush 221 may be formed. It may be rotated at two speeds to flow down the second duct 212 along the wall where the desorbed water is formed.

The fan 215 is provided where the cross section is temporarily reduced by the step 214 so that the pretreated air smoothly flows into the third duct 213 without remaining inside the second duct 212. Can be.

In addition, when the rotating brush 221 rotates at the second speed, the fan 215 may be rotated in the opposite direction, so that the water that is detached by rotating the rotating brush 221 at the second speed may be removed from the third duct 213. Can be reduced.

At this time, the device for generating a driving force for rotating the fan 215 may be provided separately, if not provided separately, the fan 215 is connected to the drive module 222 to transfer the driving force from the drive module 222. I can receive it.

For example, mesh nets may be provided at the front and rear ends of the fan 215 to allow air to flow from the second duct 212 to the third duct 213 but to reduce water inflow. In this case, even if water is introduced, the dust contained in the water may be filtered out of the mesh net.

The drain pipe 216 is connected to one side of the lower end of the second duct 212 so that water accumulated in the lower side of the second duct 212 flows into the second housing 140, and the other side is connected to the second housing. It may be connected to one top surface of the 140.

Filter net 217 is located in the drain pipe 216 is located at the beginning connected to the second duct 212, so that the dust contained in the stagnant water in the process of entering the drain pipe 216 may be filtered. .

At this time, the water filtered by the dust contained in the stagnant water is accommodated in the second housing 140 through the drain pipe 216, the water contained in the second housing 140 is again the injection unit 230 and the injection pipe 130 It is supplied to and sprayed to be reused.

As described above, referring to FIG. 5, the water is reused and circulated in the pretreatment system. First, in the storage tank 300, the stored water is introduced into the washing unit 240 through the first supply pipe 410. Water introduced into the washing unit 240 may be received in the second housing 140 through the drain pipe 216 after flowing down to wash the attachment unit 220.

The water contained in the second housing 140 may be supplied to the injection unit 230 through the second supply pipe 420, or may be supplied to the injection pipe 130 through the third supply pipe 430, and may be supplied to the injection pipe 130. The water supplied to) may be absorbed and dropped by the porous polling layer 120 and received in the second housing 140 again.

The water supplied to the injection unit 230 through the second supply pipe 420 is injected into the rotary brush 221 and absorbed by the rotary brush 221, and the water absorbed by the rotary brush 221 aggregates and adsorbs dust. To be stored under the second duct 212.

Water accumulated in the lower side of the second duct 212 is again received in the second housing 140 through the drain pipe 216, the water contained in the second housing 140 is again the injection unit 230 and the injection pipe 130 ) Can be circulated in the pretreatment system.

Here, although not shown in the drawings, a pump (not shown) may be included in each of the first supply pipe 410, the second supply pipe 420, and the third supply pipe 430 to generate a pressure for supplying water. .

In addition, a sieve is further provided at the beginning of the second supply pipe 420 and the second supply pipe 420 so that the particles contained in the water contained in the second housing 140 filter out relatively large dust, thereby causing the injection unit 230 and Dust may accumulate in the nozzle of the injection pipe 130 and may be prevented from clogging.

While the above has been shown and described with respect to preferred embodiments of the present invention, the present invention is not limited to the specific embodiments described above, it is usually in the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the entirety of the present invention.

100: wet prevention device 110: first housing
120: porous polling layer 130: injection tube
140: second housing 150: demister
200: pretreatment device 210: duct
211: first duct 212: second duct
213: third duct 214: step
215: fan 216: drain pipe
217: sieve 220: Attachment
221: rotary brush 222: drive module
230: injection unit 240: washing unit
300: reservoir 400: supply pipe
410: first supply pipe 420: second supply pipe
430: third supply pipe

Claims (11)

In the pre-treatment apparatus, to the wet prevention device for removing the dust and gaseous substances contained in the contaminated air, the pretreatment to reduce the concentration of dust contained in the contaminated air in the step before the contaminated air is introduced,
A duct providing a path for the contaminated air to enter the wet guard;
An attachment portion located on the path and absorbing water to allow the absorbed water to aggregate and attach dust contained in the contaminated air on the path; And
And an injection unit for injecting water at a first pressure toward the attachment unit from the front end of the attachment unit and absorbing the attachment unit.
The attachment portion,
It is provided to be rotatable, and through the rotation, the surface area where the sprayed water is absorbed is widened, the amount of contaminated air in contact with the absorbed water is increased,
The duct,
A second duct in which the attachment part and the injection part are positioned to perform a pretreatment process;
Located at the front end of the second duct and connected to the second duct, the lower surface is formed to have an inclined surface so that water used in the pretreatment process performed in the second duct does not flow backward in the shear direction of the second duct. A first duct;
A third duct positioned at a rear end of the second duct and connected to an upper end of the second duct; And
The third duct is formed in a portion connected to the second duct, the cross section of the portion where the second duct and the third duct is connected to temporarily reduce the venturi effect to increase the inflow rate of air occurs Dust reduction pretreatment device comprising a. The method of claim 1,
Water at a second pressure toward the attachment portion from the rear end of the attachment portion. Further comprising a; washing unit for cleaning the attachment portion by allowing the dust attached to the attachment portion to be detached,
The second pressure is,
Dust pretreatment device, characterized in that the pressure higher than the first pressure. The method of claim 2,
The attachment portion,
A rotating brush provided to be rotatable by a driving force and absorbing the sprayed water, wherein the dust is aggregated and attached by the absorbed water; And
And a driving module generating the driving force and transmitting the driving force to the rotary brush.
The rotating brush,
When rotated at the first speed, the surface area where the sprayed water is absorbed is widened, and the amount of contaminated air that is in contact with the absorbed water is increased,
When rotated at a second speed, the dust-attached water is desorbed by centrifugal force,
The second speed is,
Dust pretreatment device, characterized in that the higher speed than the first speed. The method of claim 3,
The spray unit, the washing unit and the rotary brush,
Each one in pairs,
Each spraying unit and each washing unit,
Water is sprayed individually towards each rotating brush,
The pair of rotating brushes,
Dust reduction pretreatment device, characterized in that rotated in different directions. The method of claim 4, wherein
The rotating brush,
The dust reduction pretreatment apparatus is provided to be detachable and to facilitate maintenance. The method of claim 3,
The rotating brush,
A dust reduction pretreatment device made of polypropylene and excellent in elasticity, resistant to acids and alkalis. The method of claim 3,
The rotating brush,
The dust reduction pretreatment device is made of nylon material, and has excellent elasticity, flexibility, and wear resistance, and resistant to alkali. A wet prevention device for removing dust and gaseous substances contained in contaminated air; And
And a dust reduction pretreatment device for pretreating the contaminated air to reduce the concentration of dust contained in the contaminated air in a step before the contaminated air enters the wet prevention device.
The dust reduction pretreatment device,
A duct connected to the wet containment device to provide a path for the contaminated air to enter the wet containment device;
An attachment part located inside the duct and absorbing water so that the absorbed water aggregates and attaches dust contained in the contaminated air on the path;
An injection unit for injecting water of a first pressure toward the attachment unit from the front end of the attachment unit to be absorbed by the attachment unit; And
Water at a second pressure toward the attachment portion from the rear end of the attachment portion. And a washing unit for allowing the attachment unit to be cleaned by desorbing dust attached to the attachment unit.
The second pressure is,
Higher pressure than the first pressure,
The attachment portion,
It is provided to be rotatable, and through the rotation, the surface area where the sprayed water is absorbed is widened, the amount of contaminated air in contact with the absorbed water is increased,
The duct,
A second duct in which the attachment portion and the injection portion are positioned to perform a pretreatment process;
Located at the front end of the second duct and connected to the second duct, the lower surface is formed to have an inclined surface so that water used in the pretreatment process performed in the second duct does not flow backward in the shear direction of the second duct. A first duct;
A third duct positioned at a rear end of the second duct and connected to an upper end of the second duct; And
The third duct is formed at a portion connected to the second duct, and the venturi effect is generated to increase the flow rate of air by temporarily reducing the cross section of the portion where the second duct and the third duct are connected. Dust reduction pretreatment system comprising a. The method of claim 8,
The wet prevention device,
The body of the upper end of the wet preventive device, the inlet connected to the duct is provided, the pre-treated air is introduced into the inside, the outlet is provided on the upper side, when the pre-treated air in the interior is purified, A first housing through which air is discharged to the outside;
A porous polling layer positioned inside the first housing and provided in a multi-layered structure so that dust and gaseous substances included in the pretreated air are removed during the passage of the pretreated air;
A spray tube positioned above each of the porous polling layers and spraying water toward each of the porous polling layers;
A second housing configured to form a body at a lower end of the wet prevention device, and when the water sprayed from the spray pipe falls, the dropped water is received; And
Located in the first housing, provided on the lower side of the discharge port, a demister (demister) for preventing the fine liquid particles are discharged together when the purified air is discharged; dust reduction comprising a Pretreatment system. The method of claim 9,
A reservoir for storing water to supply the stored water to the dust reduction pretreatment system; And
And a supply pipe configured to supply water stored in the reservoir and water received in the second housing to the injection pipe, the injection part, and the washing part.
The supply pipe,
A first supply pipe having one side connected to the reservoir and the other side connected to the washing unit so that water stored in the reservoir is supplied to the washing unit;
A second supply pipe connected to one side of the second housing and the other side of the injection unit to supply water received in the second housing to the injection unit; And
And a third supply pipe having one side connected to the second housing and the other side connected to the injection pipe, such that water received in the second housing is supplied to the injection pipe. The method of claim 10,
The water sprayed from the washing unit, the spray unit,
Received in the second housing through the duct, the dust reduction pretreatment system, characterized in that for reuse.

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