KR102546775B1 - Odor removal device - Google Patents

Abstract

An odor removal device according to the present invention includes a housing having an accommodation space therein, an intake duct that penetrates the side of the housing and introduces air containing odor substances into the accommodation space, and is provided above the intake duct within the accommodation space. It includes a packing layer that removes odorous substances in the air, and a discharge duct provided on the top of the packing layer and passing through the housing to discharge the air from which the odorous substances are removed to the outside.
At this time, the packing layer supports a spray nozzle for spraying water downward, a plurality of deodorizing blocks provided under the spray nozzle to increase the contact area between air and water, and a plurality of deodorizing blocks so that water can escape downward. It includes a block bed in which two through holes are formed. In addition, each of the deodorizing blocks has a three-dimensional body having a plurality of pores on the surface and a hollow penetrating the body.

Description

Odor removal device {ODOR REMOVAL DEVICE}

The present invention relates to an odor removal device. More specifically, the present invention relates to an odor removal device capable of effectively removing odor substances of various natures without using harmful chemicals by using a plasma generator and a hollow deodorization block.

Waste gases contaminated with odors and volatile organic compounds (VOCs) from various industrial facilities and environmental facilities are discharged into the air, causing serious environmental pollution. In particular, representative malodorous substances include methane, ammonia, hydrogen sulfide, and the like, which are becoming more serious social problems because they are greenhouse gases that cause global warming.

Accordingly, scrubbers are widely used in workplaces that emit odors to remove odorous substances including greenhouse gases. A scrubber is a device that uses a liquid to collect solid or liquid particles suspended in a gas. The liquid is sprayed through a spray nozzle, and while the liquid falls from the top to the bottom, it comes into contact with the gas rising from the bottom to the top. It is a representative pollution prevention facility that removes gas by contact.

1 shows a conventional general wet scrubber using water. As shown in FIG. 1, the contaminated air introduced into the lower part of the wet scrubber 10 contacts water while rising in the wet scrubber 10, and odor components are removed in this process.

More specifically, a packing layer 12 filled with a pall ring 11 is provided inside the wet scrubber 10, and a spray nozzle 13 for spraying water is provided on top of the packing layer 12. That is, the rising air is mixed with water in the packing layer 12, and in this process, odor components in the air can be removed. The polling 11 is a configuration for increasing the mixing degree of air and water, and the structure shown in FIG. 2 is generally used.

However, such a conventional polling 11 has a disadvantage in that the effect of increasing the mixing degree of air and water is insignificant and the odor removal effect is not great. In addition, the wet scrubber 10 can remove hydrophilic odor substances, but has a problem in that it cannot remove hydrophobic odor substances such as methane.

In order to solve this problem, a liquid chemical scrubber 20 shown in FIG. 3 has been proposed. The liquid chemical scrubber 20 was developed to improve the removal rate of odorous substances, and is characterized by using two or more liquid chemicals with different properties. For example, an acidic chemical is sprayed onto the first packing layer 21 to remove alkaline odorous substances, and then an alkaline chemical is sprayed onto the second packing layer 23 to remove acidic odorous substances.

However, since the chemical liquid scrubber 20 uses chemicals harmful to the human body, there is a problem in that a large amount of contaminated wastewater is generated.

Accordingly, there is a need to develop an odor removal device capable of effectively removing odorous substances of various natures without using harmful chemicals.

An object of the present invention is to provide an odor removal device capable of effectively removing odorous substances of various natures without using harmful chemicals.

However, the problem to be solved by the present invention is not limited to the above-described problem, and may be expanded in various ways without departing from the spirit and scope of the present invention.

In order to achieve the above object of the present invention, an odor removal device according to exemplary embodiments includes a housing having an accommodation space therein; an intake duct passing through a side surface of the housing and introducing air containing odorous substances into the accommodation space; a packing layer provided above the intake duct in the accommodation space and removing odorous substances in the air; and a discharge duct disposed above the packing layer and passing through the housing to discharge air from which odor substances are removed to the outside.

At this time, the packing layer supports a spray nozzle for spraying water downward, a plurality of deodorizing blocks provided under the spray nozzle to increase the contact area between air and water, and the deodorizing blocks, but the water drains downward. It may include a block bed in which a plurality of through holes are formed so as to exit. In addition, each of the deodorizing blocks may have a three-dimensional body having a plurality of pores on a surface and a hollow penetrating the body.

Meanwhile, the body may have any one of a spherical shape and a polyhedral shape.

In addition, if necessary, a plurality of hollows may be provided in the deodorization block.

Water that has fallen from the packing layer may be stored in a lower portion of the accommodation space, and the water stored in the lower portion of the accommodation space may be supplied to the spray nozzle by a spray pump.

In one embodiment, a plurality of packing layers may be vertically stacked inside the housing.

In one embodiment, the block bed may include a plate-shaped bed supporting the deodorization blocks, a plurality of through holes penetrating the bed, and a plurality of protruding pins protruding upward from the bed. .

In one embodiment, the odor removal device may further include a demister disposed between the packing layer and the discharge duct to selectively collect moisture.

An odor removal device according to another exemplary embodiment of the present invention includes a suction duct through which air containing odor substances is introduced; a plasma generator connected to the rear end of the suction duct and generating active oxygen species by generating plasma; a packing layer connected to the rear end of the plasma generator and spraying water to remove odorous substances in the air; and a discharge duct for discharging the air passing through the packing layer to the outside.

At this time, air moves upward in the packing layer. In addition, the packing layer supports a spray nozzle for spraying water downward, a plurality of deodorizing blocks provided under the spray nozzle to increase the contact area between air and water, and the deodorizing blocks to allow water to escape downward. It may include a block bed in which a plurality of through holes are formed so as to be. Further, each of the deodorizing blocks may have a three-dimensional body having a plurality of pores on a surface and a hollow penetrating the body.

Meanwhile, the body may have a spherical shape or a polyhedral shape, and a plurality of hollows may be provided in the body.

In addition, the block bed may include a plate-shaped bed supporting the deodorization blocks, a plurality of through holes penetrating the bed, and a plurality of protruding pins protruding upward from the bed.

Meanwhile, the odor eliminator may further include a spray pump supplying water that has fallen from the packing layer to the spray nozzle.

An odor removal device according to exemplary embodiments of the present invention may maximize contact between air and water by using deodorizing blocks formed with numerous pores, and may smooth air flow by forming hollows penetrating the deodorizing blocks. Accordingly, it is possible to maximize the removal performance of odorous substances.

In addition, the block bed supporting the deodorization block is formed with through-holes that function as air circulation and water drain passages. In the odor removal device according to exemplary embodiments of the present invention, protruding pins are formed on the block bed to protrude upward. By doing so, it is possible to prevent the deodorizing block from blocking the through hole. Accordingly, it is possible to maintain smooth flow of air and drain of water, and to maximize performance of removing odorous substances.

In addition, the odor removal device according to exemplary embodiments of the present invention may further include a plasma generator as a pretreatment device. The plasma generator can increase the reactivity of hydrophilic odor substances and convert hydrophobic odor substances into hydrophilic substances. there is. Accordingly, most of the odorous substances are hydrophilic, and various kinds of odorous substances can be easily removed even when only water is used as washing water.

1 is a view showing a conventional wet scrubber.
FIG. 2 is a diagram illustrating polling of FIG. 1 .
3 is a view showing a conventional liquid chemical cleaning type scrubber.
4 is a view showing an odor removal device according to a first embodiment of the present invention.
FIG. 5 is a perspective view illustrating the deodorizing block of FIG. 4 .
6 is a view showing an odor removal device according to a second embodiment of the present invention.
7 is a view showing an odor removal device according to a third embodiment of the present invention.

For the embodiments of the present invention disclosed in the text, specific structural or functional descriptions are only exemplified for the purpose of explaining the embodiments of the present invention, and the embodiments of the present invention may be implemented in various forms and the text It should not be construed as being limited to the embodiments described above.

Since the present invention may have various changes and various forms, specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific form disclosed, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms may be used for the purpose of distinguishing one component from another. For example, a first element may be termed a second element, and similarly, a second element may be termed a first element, without departing from the 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. Other expressions describing the relationship between elements, such as "between" and "directly between" or "adjacent to" and "directly adjacent to", etc., should be interpreted similarly.

Terms used in this application 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 application, the terms "comprise" or "having" are intended to designate that the described feature, number, step, operation, component, part, or combination thereof exists, but one or more other features or numbers However, it should be understood that it does not preclude the presence or addition of steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in this application, they are not interpreted in an ideal or excessively formal meaning. .

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described in more detail. The same reference numerals are used for the same components in the drawings, and redundant descriptions of the same components are omitted.

First, an odor removal device according to a first embodiment of the present invention will be described with reference to FIGS. 4 and 5 . 4 is a view showing an odor removal device according to a first embodiment of the present invention, and FIG. 5 is a perspective view showing the deodorization block of FIG. 4 .

Referring to FIGS. 4 and 5, the odor removal device 100 includes a housing 110 constituting an external shape, a first packing layer 120 and a second packing layer 130 provided inside the housing to remove odorous substances in the air. ), a spray pump 140 for supplying cleaning water to the packing layers 120 and 130, a demister 150 for removing moisture from the air passing through the packing layers 120 and 130, and odorous substances. and a drainage pump 160 for discharging contaminated water to the outside.

At this time, the washing water may be water, water containing a chemical solution, or a chemical solution. However, for convenience of description, only the case of using water as washing water will be described below.

The housing 110 is configured to form an external shape of the odor removal device 100 and may have a cylindrical shape, a polygonal column shape, and the like. An accommodating space 115 is formed inside the housing 110, and components for removing odor substances, such as the packing layers 120 and 130 and the demister 150, may be accommodated in the accommodating space 115. In addition, water that has fallen from the packing layers 120 and 130 may be accommodated in the lower portion of the accommodation space 115 .

Specifically, as shown in FIG. 4, water is stored at the lowermost part of the accommodation space 115, and the first packing layer 120, the second packing layer 130, and the demister 150 are sequentially formed thereon. can be placed as In addition, an intake duct 111 through which polluted air is introduced from the outside is provided below the first packing layer 120, and a discharge duct 113 through which purified air is discharged to the outside is provided above the demister 150. It can be. That is, the contaminated air may be introduced into the housing 110 through the intake duct 111, purified while passing through the packing layers 120 and 130, and then discharged to the outside through the discharge duct 113.

The first packing layer 120 is provided at a higher position than the intake duct 111 and can remove odorous substances contained in the air.

The first packing layer 120 includes a first spray nozzle 121 for spraying water, a plurality of first deodorizing blocks 123 increasing a contact area between the sprayed water and air, and the first deodorizing blocks 123 ) It may include a first block bed 125 supporting the.

The first spray nozzle 121 may receive water from the spray pump 140 and spray water toward the first deodorizing blocks 123 . Considering the effect of gravity, it is preferable that the first spray nozzle 121 is located above the first deodorization blocks 123, and a plurality of them may be provided as needed.

At this time, the spray pump 140 supplies water stored in the accommodation space 115 of the housing 110 to the first spray nozzle 121 . That is, there is no need to continuously supply water from the outside, and odor can be continuously removed by circulating water. Then, the contaminated water may be discharged to the outside using the discharge pump 160 .

The first deodorizing block 123 has a sphere shape or a polyhedron shape, and can improve the capture rate of odorous substances by increasing the contact area between the water sprayed from the first spray nozzle 121 and the air. there is.

One embodiment of the first take-off block 123 is shown in FIG. 5 . As shown in FIG. 5 , the first deodorization block 123 may have a hexahedral body 1231 having a plurality of pores 1233 and a hollow 1235 penetrating the body 1231.

The pores 1233 may be uniformly formed throughout the body 1231 . For example, a material having a large amount of pores 1233 is prepared by adding a forming agent to synthetic resin or rubber, and the porous body 1231 having a large porosity is formed by cutting the material to an appropriate size. can

The pores 1233 may store water sprayed from the first spray nozzle 125 . Therefore, the existence of the numerous pores 1233 can greatly increase the contact area and contact probability between air and water, and as a result, the odor removal effect of the odor removal device 100 can be improved.

The hollow 1235 is formed to pass through the body 1231, and the size or number of the hollow may be appropriately changed as needed. For example, as shown in FIG. 5 , three hollows 1235 penetrating each side of the hexahedral body 1231 may be provided. Alternatively, only one hollow 1235 may be formed in the hexahedron-shaped body 1231, or two hollows 1235 may be formed on each side, so that a total of six hollows 1235 may be provided.

Contaminated air introduced into the housing 110 through the intake duct 111 rises toward the discharge duct 113 and is purified while being mixed with water in the first packing layer 120 . However, since the first packing layer 120 is filled with a number of deodorizing blocks 123, the deodorizing blocks 123 obstruct air flow, and thus the odor removal effect may decrease.

In order to solve this problem, in the present invention, a hollow 1235 is formed in the deodorizing block 123. In this case, since rising air can flow through the hollow 1235, the flow of air in the first packing layer 120 can be smooth. In addition, since air is more likely to contact water while passing through the hollow 1235 inside the body 1231, the performance of removing odorous substances can be greatly improved.

Meanwhile, although FIG. 5 shows that the first deodorizing block 123 has a hexahedral shape, the present invention is not limited thereto, and the first deodorizing block 123 may have various shapes. For example, the first deodorizing block 123 may have a sphere shape or any one of various polyhedral shapes such as hexahedron, octahedron, and decahedron.

The first takeover blocks 123 may be supported by the first block bed 125 . The first block bed 125 may include a plate-shaped bed 1251 and a plurality of through holes 1253 penetrating the bed 1251 . That is, while the bed 1251 supports the first deodorization block 123 , water in which odor substances are collected may fall downward through the through-holes 1253 .

Meanwhile, only one packing layer may be provided inside the housing 110, but a plurality of packing layers may be provided to improve the effect of removing odor substances. 4 shows an embodiment provided with two packing layers.

The second packing layer 130 is provided above the first packing layer 120, and includes a second spray nozzle 131 for spraying water, and a plurality of second deodorizing blocks for increasing the contact area between the sprayed water and air. 133, and a second block bed 135 supporting the second deodorizing blocks 133. At this time, the structure of each of the second spray nozzle 131, the second deodorizing block 133, and the second block bed 135 is the first spray nozzle 121, the first deodorizing block 123 and the first block bed 135 described above. It may be substantially the same as or similar to the block bed 125 . Therefore, redundant description thereof will be omitted.

A demister 150 for removing moisture may be provided above the second packing layer 130 .

Most of the water sprayed from the spray nozzles 121 and 131 falls downward, but fine droplets may rise together with the air. The demister 150 is a component that selectively collects these fine droplets. The demister 150 may be, for example, a filter in which a fibrous object is overlapped in a net shape, and may be provided with or omitted from a plurality of demisters.

The air from which odor substances and moisture are removed may be discharged to the outside of the housing 110 through the discharge duct 113 provided at the top.

As described above, the odor removal device 100 according to the present invention maximizes the contact between air and water by using the deodorization block 123 in which numerous pores 1233 are formed, and the deodorization block 123 has a hollow ( 1235) to facilitate air flow. Accordingly, it is possible to maximize the removal performance of odorous substances.

Hereinafter, an odor removal device 101 according to a second embodiment of the present invention will be described with reference to FIG. 6 .

The odor removal device 100 of FIG. 6 is substantially the same as or similar to the odor removal device 100 described with reference to FIGS. 4 and 5 except for the shapes of the block beds 125 and 135 . Therefore, only the above differences will be described, and redundant descriptions of the same components will be omitted.

First, referring to FIG. 4 again, the plurality of first deodorizing blocks 123 may be supported by the first block bed 125, and water is formed through through holes 1253 formed in the first block bed 125. falls downwards through

However, as shown in FIG. 4, when the first deodorizing block 123 has a polyhedral shape, one surface of the first deodorizing block 123 may contact the first block bed 125 to block the through hole 1253. there is. In this case, since air rises and water drains through the through hole 1253 is not smooth, the odor removal effect may deteriorate.

In order to compensate for this problem, in the present invention, a protruding pin 1255 is additionally formed on the first block bed 125. The protruding pin 1255 may prevent the through hole 1253 from being blocked by separating the first deodorizing block 123 from the first block bed 125 .

Specifically, as shown in FIG. 6, the first block bed 125 includes a plate-shaped bed 1251, a plurality of through holes 1253 penetrating the bed 1251, and a bed 1251 ) may include a plurality of protruding pins 1255 protruding upward. The protruding pin 1255 is provided at a position adjacent to the through hole 1253, and the plurality of protruding pins 1255 may have the same length or different lengths.

In addition, although not shown, a plurality of protruding pins may be provided in the second block bed 135 as well.

As described above, in the odor removal device 101 according to the second embodiment of the present invention, the protruding pins 1255 protruding upward are formed on the block beds 125 and 135 to prevent the through hole 1253 from being blocked. It can be prevented. Accordingly, it is possible to maintain smooth flow of air and drain of water, and to maximize performance of removing odorous substances.

Hereinafter, an odor removal device 102 according to a third embodiment of the present invention will be described with reference to FIG. 7 .

The odor removal device 102 of FIG. 7 is substantially the same as or similar to the odor removal device 100 described with reference to FIGS. 4 and 5 except that it further includes a plasma generator 170 . Therefore, only the above differences will be described, and redundant descriptions of the same components will be omitted.

The odor removal device 100 shown in FIG. 4 can greatly improve the possibility of contact between air and washing water. However, when water is used as washing water, most of the hydrophilic odor substances can be removed, but the removal of the hydrophobic odor substances may be insufficient.

In order to compensate for this problem, in the present invention, a plasma generator 170 is additionally installed. The plasma generator 170 improves decomposability of hydrophilic substances and converts hydrophobic substances into hydrophilic substances, thereby significantly improving odor removal performance. Therefore, even if water is used as washing water, various odorous substances can be easily removed.

More specifically, as shown in FIG. 7, the odor removal device 102 according to the third embodiment of the present invention includes a housing 110 constituting an external shape, and is provided inside the housing to remove odorous substances in the air. The first packing layer 120 and the second packing layer 130, the spray pump 140 for supplying water to the packing layers 120 and 130, and moisture from the air passing through the packing layers 120 and 130. It may include a demister 150 to remove, a drainage pump 160 to discharge polluted water containing odorous substances to the outside, and a plasma generator 170 to generate plasma.

In this case, based on the flow direction of air, the plasma generator 170 should be installed upstream of the packing layers 120 and 130 . That is, the contaminated air is first supplied to the plasma generator 170 through the intake duct 111, and the air passing through the plasma generator 170 is supplied to the packing layers 120 and 130 through the connection duct 117. It can be.

Meanwhile, FIG. 7 shows an example in which the plasma generator 170 is installed outside the housing 110, but the present invention is not limited thereto. That is, it is sufficient as long as the plasma generator 170 is installed upstream of the packing layers 120 and 130, and the plasma generator 170 may be installed inside the housing 110 as needed. For example, a plasma generator 170 may be provided between the suction duct 111 and the first packing layer 120 in FIG. 4 .

The plasma generator 170 is a device that generates low-temperature plasma at atmospheric pressure, and may be, for example, a dielectric barrier discharge (DBD) type plasma generator. In this case, the plasma generator 170 generates a large amount of highly reactive reactive oxygen species (ROS), and the reactive oxygen species may react with malodorous substances.

Specifically, hydrophilic odorous substances such as ammonia and hydrogen sulfide may react with active oxygen species to increase decomposition. This reaction process is disclosed in Chemical Formula 1. In Chemical Formula 1, ammonia with low reactivity is converted to nitrogen dioxide with high reactivity.

[Formula 1]

Next, hydrophobic malodorous substances such as methane can be converted into hydrophilic substances by reacting with active oxygen species. This reaction process is disclosed in Chemical Formula 2. In Chemical Formula 2, methane, a hydrophobic material, is converted to carbon dioxide, a hydrophilic material.

[Formula 2]

As described above, in the plasma generator 170, the reactivity of the hydrophilic malodorous material is further increased, and the hydrophobic malodorous material may be converted into a hydrophilic material. That is, after passing through the plasma generator 170, most odor substances become hydrophilic and their reactivity with water is greatly increased. Therefore, the odor removal effect in the packing layers 120 and 130 can be further improved. In addition, since various odorous substances can be removed using only water, there is an advantage in that no chemicals harmful to the human body are used.

In addition, the plasma generator 170 has an effect of removing greenhouse gases such as methane and nitrous oxide.

For example, methane, a typical odorous substance, is a very serious global warming substance with a Global Warming Potential (GWP) of 21. Here, the global warming potential (GWP) is a measure of the effect of greenhouse gases on global warming and represents a relative value based on carbon dioxide. However, since methane is hydrophobic, there is a problem that it is difficult to remove it with only a general wet scrubber. However, since the malodor removal device 102 according to the present invention can convert methane into hydrophilic carbon dioxide (see Chemical Formula 2) in the plasma generator 170, methane can be easily removed using only water.

In addition, nitrous oxide (N ₂ O), which is one of the greenhouse gases, is a serious global warming substance with a global warming potential (GWP) of up to 310, and can be removed in the plasma generator 170. This process is disclosed in Formula 3 below.

[Formula 3]

That is, nitrous oxide (N ₂ O) is converted into highly reactive nitrous oxide (NO ₂ ) in the process of passing through the plasma generator 170, and the converted nitrous oxide (NO ₂ ) is the packing layer (120, 130) can be collected from

Although the above has been described with reference to the embodiments of the present invention, those skilled in the art can variously modify and change the present invention without departing from the spirit and scope of the present invention described in the claims below. You will understand that you can.

10: wet scrubber 20: liquid cleaning scrubber
100, 101, 102: odor removal device
110: housing 120: first packing layer
130: second packing layer 140: spray pump
150: demister 160: discharge pump
170: plasma generator

Claims (10)

A housing having an accommodation space therein;
an intake duct passing through a side surface of the housing and introducing air containing odorous substances into the accommodation space;
a packing layer provided above the intake duct in the accommodation space and removing odorous substances in the air; and
a discharge duct disposed above the packing layer and passing through the housing to discharge air from which odor substances are removed; and
It is connected to the housing through a connection duct and is installed upstream of the packing layer, and generates highly reactive reactive oxygen species (ROS) so that odorous substances contained in the air introduced through the intake duct react with the reactive oxygen species. and a plasma generator for converting the hydrophobic odorous substance into a hydrophilic substance having excellent reactivity with water, removing the odorous substance, and supplying the odorous substance to the packing layer through the connecting duct,
The end of the suction duct inserted into the housing is bent upward by a predetermined angle,
The packing layer,
a spray nozzle for spraying water downward;
a spray pump supplying water to the spray nozzle;
a plurality of deodorizing blocks provided under the spray nozzle to increase the contact area between air and sprayed water to improve the capture rate of odorous substances; and
A block bed supporting the deodorization blocks and having a plurality of through holes formed therein so that water can escape downward;
The spray pump circulates the water stored in the accommodation space of the housing to continuously remove odors, so that there is no need to continuously supply water from the outside, and then the contaminated water is discharged to the outside using a discharge pump,
Each of the deodorization blocks,
Polyhedral body having a plurality of pores on the surface; and
In order to solve the problem that the odor removal effect is reduced because the packing layer is filled with deodorizing blocks and obstructs the flow of air, it is formed to pass through the body from each side of the body to the opposite side, so that in the packing layer It has a plurality of hollows to facilitate the flow of air in the packing layer by allowing rising air to flow through the hollows, and to improve the removal performance of malodorous substances by allowing the air to contact water while passing through the inside of the body through the hollows. ,
The block bed,
a plate-shaped bed supporting the deodorizing blocks;
a plurality of through holes penetrating the bed; and
In order to compensate for the problem that one side of the deodorizing blocks contacts the block beds and blocks the through-holes so that the air rises and the water drains through the through-holes is not smooth, the odor removal effect is lowered. An odor removal device comprising a plurality of protruding pins having different lengths from each other and preventing through-holes from being clogged by separating the deodorizing blocks from the block bed. delete delete delete The odor removal device according to claim 1, wherein a plurality of packing layers are vertically stacked inside the housing. delete The odor removal device according to claim 1, further comprising a demister disposed between the packing layer and the discharge duct to selectively collect moisture. delete delete delete

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