KR102078746B1 - Selective catalytic reduction apparatus - Google Patents

Abstract

The disclosure disclosed herein relates to the provision of a selective catalytic reduction device that expands the contact area of a catalyst and gas in a confined space and improves gas flow.
According to one embodiment of the disclosure disclosed herein, the selective catalytic reduction device is formed in a duct shape extending from one end to the other, and an inlet including inclined plates disposed in the inner space so as to be spaced apart from each other, one end of the inlet The mixing part which is coupled to the other end of the part and whose both ends are open to the outside, one end is coupled to the other end of the mixing part, the other end is bent and extended toward one side, and the inside is a distribution part formed to be divided into a plurality of spaces. A catalyst comprising a diffusion unit that is coupled to the other end of the distribution unit, extends toward the other end and extends, and one end is coupled to the other end of the diffusion unit, the other end is coupled to the outlet, and the interior space is formed adjacent to the other end. It includes a part, and the catalyst units are combined with each other to form a zigzag toward one end and the other end of the catalyst part Bending and extending toward the lower portion in combination with the catalytic portion is formed to separate the inner space of said catalyst is operated as an SCR device with high efficiency in a narrow space, since the catalyst portion in contact with the catalyst for a relatively large amount of gas.

Description

Selective catalytic reduction device {SELECTIVE CATALYTIC REDUCTION APPARATUS}

The disclosure disclosed herein relates to a selective catalytic reduction device, and to a selective catalytic reduction device for removing nitrogen oxides through a catalyst.

Unless otherwise indicated in this specification, the contents described in this identification item are not prior art to the claims of this application, and the description in this identification item is not admitted to be prior art.

In recent years, as part of efforts to reduce air pollutant emissions that cause fine dust generated in Korea, amendments to related laws and enforcement rules have been revised and supplemented to strengthen pollution control.

Selective catalytic reduction (SCR) systems and selective non-catalytic reduction (SNCR) systems are typically used as post-treatment facilities for treating nitrogen oxides, which are representative air pollutants.

When the SCR device is installed in an existing facility, the SCR catalyst is in close contact with the inlet side of the gas discharged to the outside, and the contact area between the gas and the catalyst is relatively low in a limited space, thereby reducing the efficiency of nitrogen oxide removal.

In this regard, Korean Patent Publication No. 10-1561260 discloses an SCR reactor for minimum area installation, and Korean Patent Publication No. 10-0983635 discloses a channeled year of a catalytic reduction reactor.

However, the existing technologies do not disclose a structure in which the contact area of the catalyst and gas is expanded in a limited space and the gas flow is improved.

Disclosed is a selective catalytic reduction device that expands a contact area between a catalyst and a gas in a limited space and improves gas flow.

In addition, it is obvious that other technical problems may be derived from the following description, not limited to the technical problems as described above.

According to one embodiment of the disclosed content, the selective catalytic reduction device is formed in a duct shape extending from one end to the other, and an inlet including inclined plates arranged to be spaced apart from each other in the inner space, one end of which is provided at the other end of the inlet. A mixing part that is combined and has both ends open to the outside, one end is coupled to the other end of the mixing part, the other end is bent and extended toward one side, and the inside is a distribution part formed to be divided into a plurality of spaces, one end of which is the other end And a diffusion unit formed to be extended and extended toward the other end, and one end coupled to the other end of the diffusion unit and the other end coupled to an outlet, and the interior space includes a catalyst unit including catalyst units formed adjacent to the other end , The catalyst units are combined with each other and bent in a zigzag form toward one end and the other end of the catalyst part. It extends toward the in combination with the catalytic portion is formed to separate the inner space of said catalyst.

In addition, each of the catalyst units may include a catalyst plate and a guide, one end of the catalyst plate is disposed toward the distribution portion, and the other end of the catalyst plate is formed to extend toward the outlet. Here, one end of the guide is disposed to be spaced apart from the catalyst plate on one end of the catalyst plate, and the other end of the guide may be inclined toward the other end of the catalyst plate to be combined with the other end of the catalyst plate.

In addition, the catalyst units may be stacked with each other while one end of the catalyst plate is coupled to one end of the catalyst units with one end of the guide positioned above.

In addition, the mixing unit may include a reducing agent inlet formed to open and close a portion of the outside and nozzles that are disposed in the interior space of the mixing unit through the reducing agent inlet to spray the reducing agent.

In addition, one end of the mixing unit is coupled to the inner surface of the mixing unit, and the other end extends toward the center of the distribution unit to form a concave curved surface toward the inside of the mixing unit, and one end is coupled to the lower end of the guide unit. The other end may further include a separating plate extending toward the upper portion of the guide unit, coupled to one upper portion of the guide unit, and inclined surfaces extending toward both sides of the distribution unit on both sides.

In addition, one end of each of the distribution parts may be disposed in a state spaced from each other from one end of the distribution part, and the other end may include curved guide plates extending and forming curved surfaces parallel to each other toward one end of the diffusion part.

In addition, the diffusion portion includes a plurality of diffusion plates that are formed to extend inclined from one end of the diffusion portion toward the upper portion of the diffusion portion in the inner space, and the inclination angle may increase as the diffusion plates are disposed on the upper portion.

According to one embodiment of the contents disclosed in the present specification, the selective catalytic reduction device has an advantage of excellent removal effect of nitrogen oxides in a limited space by mixing the inflowing gas and spreading the gas uniformly toward the catalyst plates.

In addition, the selective catalytic reduction device has the advantage of improving the efficiency of reacting to the catalyst plate, which is produced to have a large surface area for the gas to be uniformly diffused by mixing the inflowing gas and slowing the gas through adjustment of the movement path.

In addition, the selective catalytic reduction apparatus has an advantage in that guides for guiding the movement of gas between the catalyst plates are formed inclined, thereby increasing the contact area between the gas and the catalyst plate and improving the effect of removing nitrogen oxides.

In addition, since the effects of the present invention described above are naturally exerted by the composition of the contents regardless of whether the inventor recognizes them or not, the above-described effects are only a few effects according to the contents described, and all effects that the inventors grasp or exist. It should not be admitted that it is written.

In addition, the effects of the present invention will have to be further understood by the overall description of the specification, even if it is not described in an explicit sentence, those skilled in the art to which the described content belongs may have such an effect through this specification. If it can be recognized as an effect, it should be regarded as the effect described in this specification.

1 is an image showing the flow analysis results of a conventional selective catalytic reduction device.
2 is a perspective view of a selective catalytic reduction device according to an embodiment of the content disclosed herein.
3 is a perspective view showing a part of the selective catalytic reduction device of Figure 2;
4 is a perspective view and a bottom view showing a guide unit and a separation plate of the selective catalytic reduction device of FIG. 2.
Figure 5 is a cross-sectional view taken along I-I 'of the selective catalytic reduction device of Figure 2;
Figure 6 is a cross-sectional view taken along II-II 'of the selective catalytic reduction device of Figure 2;
7 is an image showing the results of the flow analysis of the selective catalytic reduction device of FIG.
8 is a perspective view of a selective catalytic reduction device according to another embodiment of the content disclosed herein.
9 is a perspective view of a selective catalytic reduction device according to another embodiment of the content disclosed herein.

Hereinafter, the configuration, operation and effect of the selective catalytic reduction device according to the preferred embodiment will be described with reference to the accompanying drawings. For reference, in the following drawings, each component is omitted or schematically illustrated for convenience and clarity, and the size of each component does not reflect the actual size, and the same reference numerals refer to the same components throughout the specification. Reference numerals for the same components in the individual drawings will be omitted.

Figure 1 shows an image showing the flow analysis results of a conventional selective catalytic reduction apparatus.

As shown in FIG. 1, the conventional selective catalytic reduction device 1 has an inlet 2 through which gas is introduced, a catalyst unit 4 for removing nitrogen oxide from the gas, and a gas discharged from the catalyst unit 4 A connecting portion 6 forming a moving space and an outlet 8 through which gas is discharged are formed.

In the selective catalytic reduction device 1, the positions of the injection part 2 and the catalyst part 4 are adjacent, so that the gas directly moves to the catalyst part 4, but in a limited space, spaces other than the catalyst part 4 are relatively Therefore, it is necessary to improve the nitrogen oxide removal effect through space utilization.

In the case of the catalyst part 4, it is formed to be connected to the inlet 2, and the space of the connection part 6 formed between the catalyst part 4 and the outlet 8 is used only as a space for moving the gas from which nitrogen oxide has been removed. As it is, a method of effectively utilizing the space of the connecting portion 6 is needed.

In addition, referring to the flow analysis result, the velocity (approximately 13.901 m / s) of the gas flowing from the injection port 2 inside the catalyst portion 4 is greater than that of the connection portion 6 (about 4.8139 m / s). It is relatively high, and it can be seen that the velocity of the gas discharged through the outlet 8 (about 13.901 m / s) is also relatively higher than the velocity inside the connecting portion 6.

Through this, in a space in which the contact of the gas and the catalyst part 4 is necessary, the speed of removing nitrogen oxides is relatively high, and the gas discharged from the catalyst part 4 is stagnated through the connection part 6 and then the outlet 8 Since it is discharged through), it is necessary to use a space corresponding to the connecting portion 6 and at the same time, a technique for reducing the speed of the gas in a space requiring contact between the gas and the catalyst portion 4.

2 shows a perspective view of a selective catalytic reduction device according to one embodiment of the content disclosed herein. FIG. 3 shows a perspective view showing a part of the selective catalytic reduction device of FIG. 2.

2 and 3, the selective catalytic reduction apparatus 100 includes an inlet part 200, a mixing part 300, a distribution part 400, a diffusion part 500, a catalyst part 600, and an outlet Includes part 700.

The selective catalytic reduction apparatus 100 mixes and separates the gas flowing from the inlet part 200 and moves it toward the catalytic part 600 to guide a uniform amount of gas to move to various positions of the catalytic part 600 And, by expanding the area of the catalyst portion 600 as much as possible, the nitrogen oxide removal effect is improved.

Specifically, the inlet 200 includes a frame 220 and an inclined plate 240.

One end of the inlet 200 is connected to the combustion device, the other end is formed in a form extending obliquely toward the upper front.

The inlet part 200 separates the gas introduced from the combustion device including the boiler that discharges gas from inside the building into the upper and lower parts through the plurality of inclined plates 240 to induce the movement of the gas toward the mixing part 300.

One end of the frame 220 is connected to the combustion device, and the other end is inclinedly extended toward the front upper portion to be coupled with one end of the mixing unit 300, and a hollow is formed in the center where gas can move.

One end of each of the inclined plates 240 is coupled to one end of the inner surface of the frame 220, and the other end extends to the other end of the frame 220 along the extending direction of the frame 220, and spaces a predetermined distance up and down from each other. They are arranged to be spaced apart.

Accordingly, the gas flowing into the inlet 200 moves toward the mixing unit 300 in a state separated up and down by the inclined plates 240, and the speed decreases, and the gas in the frame 220 moves to one side. Prevent bias.

The mixing part 300 is formed in a duct form, and one end is connected to the other end of the inlet part 200 so that the gas discharged from the inlet part 200 flows in, and a predetermined space is provided so that the inlet gases can be mixed with each other. Is formed.

Specifically, the mixing unit 300 includes a frame 320, a guide unit 340, a separation plate 360, a reducing agent inlet 370, and nozzles 375.

The frame 320 is formed in the form of a duct, and a cover capable of being detached or attached is coupled to one side to open the interior space of the frame 320 to one side, and a reducing agent inlet 370 is formed at the top to mix gas. Effective reducing agent can be added.

The nozzles 375 spray the reducing agent (ammonia) supplied from the outside through the pipe from the inside of the frame 320 to spray the reducing agent uniformly on the gas mixed inside the frame 320.

The nozzles 375 are arranged to be spaced apart from each other at uniform intervals through the pipe extending from the inside of the frame 320 toward the bottom through the reducing agent inlet 370 to effectively spray the reducing agent into the gas.

One end of the frame 320 is coupled to be connected to the other end of the frame 220, and the other end is extended to the front so that the end of the distribution unit 400 and the inner space are coupled.

The guide unit 340 is formed in a rectangular shape to be coupled to the inside of the other end of the frame 320, the separation plate 360 is coupled to the guide unit 340 in the form of connecting the upper and lower center of the guide unit 340 do.

Therefore, the gas mixed with each other in the interior of the mixing unit 300 is separated to both sides through the separation plate 360 to move toward the distribution unit 400, the guide unit 340 is coupled to the inside of the frame 320 It stably supports the separation plate 360.

In addition, the separation plate 360 prevents gas mixed in the interior space of the frame 320 from being excessively concentrated in the center of the distribution unit 400 while passing through the guide unit 340, so that the gas is distributed to the distribution unit 400 Guide to move evenly to both sides of the.

The distribution unit 400 includes a frame 420, a first curved guide plate 430, and a second curved guide plate 440.

One end of the distribution unit 400 is coupled so that the other end and the inner space of the mixing unit 300 are connected, and the other end is bent and extended toward one side so that one end of the diffusion unit 500 is connected to the inner space.

The frame 420 is formed in a duct shape, and one end is coupled to be connected to the frame 320, the other end is bent and extended toward one side, and three spaces are formed in the left and right directions of the inner space of the frame 420. The first and second curved guide plates 430 and 440 partitioned as much as possible are formed.

One end of the first curved guide plate 430 is formed in the form of a plate connecting the upper and lower ends of one end of the frame 420 at a position adjacent to one side of the one end of the frame 420, and the other end along the bending direction of the frame 420 It extends to divide the inner space of the frame 420 into two spaces.

One end of the second curved guide plate 440 is formed in the form of a plate connecting the upper and lower ends of one end of the frame 420 at a position adjacent to the other side of the one end of the frame 420, and the other end of the curved direction of the frame 420 Accordingly, the space located on the other side of the first curved guide plate 430 is divided into two spaces.

Accordingly, each of the first and second curved guide plates 430 and 440 divides the inner space of the frame 420 into three spaces of one side, the other side, and the center of the frame 420 inner space, and the separation plate 360. The separated and flowing gas is separated through the first and second curved guide plates 430 and 440 and moves toward the diffusion unit 500.

4 is a perspective view and a bottom view showing a guide unit and a separation plate of the selective catalytic reduction device of FIG. 2.

Specifically, the guide unit 340 is formed in a rectangular shape to be coupled to the inside of the other end of the frame 320, one edge of the guide unit 340 is combined with the inner surface of the frame 320, the other end is a mixing unit 300 ) Extending toward the center of the other end, the inner surface of the rim is formed with a curved surface protruding concave toward the inside of one end of the mixing unit 300.

The separation plate 360 has a central portion protruding toward one end of the mixing portion 300, and both side surfaces extend inclined toward the distribution portion 400 from the central portion, and both sides are formed in a curved shape toward the distribution portion 400.

One end of the separation plate 360 is coupled to one end of the guide unit 340 at one end of the guide unit 340, and the other end extends toward the top, and both sides are guide units at one end of the guide unit 340. Combined with one end of 340.

Therefore, the gas introduced into the mixing unit 300 and mixed is separated on both sides by inclined surfaces formed on both sides of the separation plate 360 and curved surfaces formed on the edge of the guide unit 340, and the distribution unit 400 is separated. Move towards.

5 is a cross-sectional view taken along I-I 'of the selective catalytic reduction device of FIG. 2. 6 is a cross-sectional view taken along II-II 'of the selective catalytic reduction device of FIG. 2.

1 to 6, the diffusion unit 500 includes a frame 520, a first diffusion plate 540, a second diffusion plate 542 and third diffusion plates 544.

The diffusion unit 500 is coupled to the other end of the distribution unit 400 so that one end is connected to the interior space of the distribution unit 400, the upper end is extended and extended toward the other end, so that one end and the internal space of the catalyst unit 600 are extended. Combined to be connected.

The frame 520 is formed in the form of a duct, one end is combined with the other end of the distribution unit 400, the other end is extended toward the catalyst unit 600 and extended so that the upper surface and both sides form an inclined surface toward one side.

The first diffusion plate 540 is formed in the lower portion of the inner space of the diffusion unit 500, one end is coupled to the frame 520 at a position adjacent to the distribution unit 400, the other end is an extension direction of the frame 520 It extends obliquely toward the top.

The inner space of the frame 520 is divided into a space below the first diffusion plate 540 and a space above the first diffusion plate 540 through the first diffusion plate 540.

The second diffusion plate 542 is spaced apart from the upper portion of the first diffusion plate 540, one end is coupled to the frame 520 at a position adjacent to the distribution unit 400, the other end is an extension direction of the frame 520 Along the inclination angle of the first diffusion plate 540, it extends obliquely toward the top at a relatively higher inclination angle.

The inner space of the frame 520 is a space below the first diffusion plate 540 through the first and second diffusion plates 540 and 542, between the first diffusion plate 540 and the second diffusion plate 542 It is divided into a space and a space formed on the second diffusion plate 542.

The third diffusion plate 544 is spaced apart from the upper portion of the second diffusion plate 542, one end is coupled to the frame 520 at a position adjacent to the distribution unit 400, the other end is an extension direction of the frame 520 Accordingly, the second diffusion plate 542 is extended to be inclined toward the top at a relatively higher angle than the inclination angle.

Accordingly, the interior space of the frame 520 is divided into four spaces through the first to third diffusion plates 540, 542, and 544, and the gas flowing from one end of the diffusion unit 500 through four spaces They are separated from each other and spread and move toward one side.

In addition, the gas flowing into the diffusion unit 500 is distributed to the upper portion of the uniform amount of gas through the first to third diffusion plates 540, 520, and 544, the inclination angle of which increases as it is disposed on the upper side and moves toward one side. do.

The catalyst unit 600 includes a frame 620 and catalyst units 630, and the catalyst unit 630 includes a catalyst plate 640 and a guide 660.

One end of the catalyst unit 600 is coupled such that the inner space is connected to the other end of the diffusion unit 500, and the other end extends toward one side so that one end of the discharge unit 700 and the inner space are connected to each other.

The frame 620 is formed in the shape of a duct of a rectangular parallelepiped, one end is coupled to the other end of the frame 520, the other end is extended toward one side is coupled to the discharge unit 700.

The catalyst units 630 are arranged to be adjacent to the discharge unit 700 in the inner space of the frame 620, and are stacked while being combined with each other from the bottom surface of the frame 620 toward the top to be introduced at one end of the frame 620 The space in which the gas moves toward the discharge part 700 is separated.

In the state where the catalyst units 630 are combined with each other, the upper end of the frame 620 is combined with the upper part of the frame 620, and is reciprocated in a zigzag form toward one end or the other end of the frame 620, and is formed in an extended form. do.

Each of the catalyst plates 640 is formed in a plate shape extending toward the other side so as to be parallel to the bottom surface of the frame 620, and one end of each frame 620 is spaced apart from the diffusion unit 500 by a predetermined distance. It is combined with, the other end is extended to a position adjacent to the discharge unit 700 and then combined with the frame 620.

Each of the catalyst plates 640 is arranged spaced apart from each other at a predetermined distance from the lower portion of the frame 620 to the upper portion, and each of the guides 660 is a catalyst plate 640 between each of the catalyst plates 640 ) To block the space in which the gas moves toward the discharge unit 700.

Specifically, one end of each of the guides 660 is disposed so as to be spaced apart from one end of each of the catalyst plates 640, and the other end of each of the guide plates 660 extends obliquely toward a lower portion of the side where the discharge part 700 is located. ) To the other end.

At the lower part of the catalyst part 600, one end of a separate guide 660 is coupled to one end of the catalyst plate 640 located at the lower part, and extends toward one lower part to be coupled with the bottom surface of the frame 620, and located at the upper part. One end of the guide 660 of the catalyst unit 630 is coupled to the upper portion of the frame 620 to separate the discharge space 20 adjacent to the discharge part 700 and the inflow space 10 adjacent to the diffusion part 600 from each other. do.

The gas moving toward the discharge part 700 along the bottom surface of each of the guides 660 contacts the upper surface of each of the catalyst plates 640 to remove nitrogen oxide through the reaction, and the gas from which the nitrogen oxide is removed It passes through the catalyst plates 640 and moves toward the discharge part 700.

Therefore, each of the guides 660 is uniformly dispersed from the diffusion part 700 to the upper and lower parts to guide the incoming gas to the upper surface of the catalyst plate 640 to improve the contact area between the gas and the catalyst plate 640, The catalytic reaction is improved.

In addition, each of the catalyst plates 640 is disposed on one side of the frame 620 adjacent to the relatively large discharge portion 700, thereby effectively removing nitrogen oxides through a relatively large surface area than the catalyst portion 4 of FIG. There are possible advantages.

On the other hand, in the case of a separate guide 660 coupled with the bottom surface of the catalyst unit 600, the gas moving toward the discharge unit 700 along the bottom surface of the catalyst unit 600 is replaced by the catalyst plate 640, and the catalyst unit It is possible to prevent stagnation on the bottom surface of (600).

Discharge part 700 is coupled so that one end is connected to the other end of the catalyst unit 600 and the inner space, the other end is reduced and extended to be connected to the outer space.

7 and 8 show images showing the flow analysis results of the selective catalytic reduction device of FIG. 2.

7 and 8, the velocity of the gas flowing into the inlet 200 is gradually reduced while moving the mixing unit 300, the distribution unit 400 and the diffusion unit 500, the diffusion unit In the space between the 500 and the catalyst unit 630 inside the catalyst unit 600 is uniformly spread and moves.

In particular, the gas is bypassed through the mixing unit 300 and the speed decreases while the speed decreases to the first in the process of movement and then diffuses and moves by the first to third diffusion plates 540, 542, and 544. The flow of gas into the space between the catalyst plates 640 by the speed of the smooth flow of nitrogen oxides are effectively removed.

In addition, the velocity of the gas (about 5.1189 m / s) inside the catalyst portion 600 of FIG. 7 is relatively higher than the velocity of the gas moving in the catalyst portion 4 of FIG. 1 (about 13.901 m / s). Since it is remarkably low, there is an advantage in that the reaction of the gas flowing into the catalyst plate 640 is sustained sufficiently.

8 shows a perspective view of a selective catalytic reduction device according to another embodiment of the content disclosed herein.

The selective catalytic reduction device 120 according to the present embodiment is substantially the same as the selective catalytic reduction device 100 of FIGS. 1 to 7 except for the elevation unit 800, so that the same reference number and name are used and overlapped. Description is omitted.

8, the selective catalytic reduction device 120 further includes a lifting unit 800, and the lifting unit 800 includes a motor 820, a sliding bar 840, a spring 860, and flow velocity sensing It includes a sensor 880.

The lifting unit 800 is combined with one end of each of the catalyst plates 640 on one side of the frame 620 to raise or lower one end of the catalyst plate 640 through a partial upward or downward driving.

As the gas moves toward the discharge part 700 through the driving of the lift part 800, one end instead of the guides 660 is disposed toward the lower part relative to the other end, and the upper surface of the catalyst plate 640 forming an inclined surface In the case of a gas moving at a relatively low speed because it is in primary contact with the nitrogen oxide removal effect is improved.

In this case, both ends of each of the catalyst plates 640 are coupled to be rotatable with both sides of the frame 620, and one end of the catalyst plate 640 moves toward the upper or lower side about the other end of the catalyst plate 640. This is possible.

Specifically, the motor 820 is formed on the lower side of the inside of the frame 620, one end of the sliding bar 840 is coupled to one end through a separate gear box and the drive shaft of the motor 820, the other end It extends upward and is coupled with one end of each of the catalyst plates 640.

If the sliding bar 840 is temporarily moved downward once it is disposed on the bottom surface of the catalyst plate 640 of the spring 860, when the driving of the motor 820 is stopped, the sliding bar 840 Elastically moves upward.

The flow rate sensor 880 is attached to the inside of the inlet part 200, the mixing part 300, the distributing part 400, the diffusion part 500 or the catalyst part 600, and is connected to the motor 820 to connect the gas. When the speed is relatively low, the motor 820 is driven to move the sliding bar 840 toward the bottom.

Therefore, the selective catalytic reduction device 120 has an advantage of continuously maintaining the removal effect of nitrogen oxides according to the moving speed of the gas through the operation of the lifting unit 800.

9 shows a perspective view of a selective catalytic reduction apparatus according to another embodiment of the content disclosed herein.

The selective catalytic reduction device 140 according to this embodiment is substantially the same as the selective catalytic reduction device 100 of FIGS. 1 to 7 except for the catalyst unit 900, so that the same reference number and name are used and overlapped. Description is omitted.

As illustrated in FIG. 9, the selective catalytic reduction device 140 includes a catalyst unit 900.

The catalyst unit 900 improves the catalytic reaction through a structure in which the incoming gas can move smoothly toward the discharge unit 700, and the gas passing through the catalyst unit 900 is also discharged smoothly toward the discharge unit 700. Is formed.

Specifically, the catalyst unit 900 includes a frame 910 and catalyst units 920, and each of the catalyst units 920 includes a catalyst plate 940 and a guide 960.

Each of the catalyst units 920 is coupled to be stacked up and down with each other, so that the space inside the frame 910 is introduced into the inflow space 10 adjacent to the diffusion part 500 and the exhaust space 20 adjacent to the discharge part 700. Compartment.

The catalyst plate 940 is coupled to the frame 910 in a state spaced apart from each other at a predetermined distance from the inside of the frame 910 adjacent to the discharge part 700, and each of the guides 960 is a catalyst plate ( 940).

The catalyst plate 940 and the guide 960 are alternately alternated with each other, and both ends of the guides 960 are combined with each of the catalyst plates 940 located in the upper and lower portions in a state arranged from top to bottom to form a zigzag shape as a whole. In combination with the frame 910, the inner space of the frame 910 is separated into an inlet space 10 and an outlet space 20.

Specifically, one end of the guide 960 adjacent to the diffusion unit 500 extends a predetermined distance toward the catalyst plate 940 in a state that is spaced apart toward the top of one end of the catalyst plate 940, The central portion is bent toward the discharge portion 700 and extends toward the discharge portion 700 in a state parallel to the catalyst plate 940, and the other end is bent and extended toward the other end of the catalyst plate 940 to be inclined. 940).

The other end of the guide 960 is combined with the other end of the catalyst plate 940 to form an inlet space 10 between the guide 960 and the catalyst plate 940, and between the guide 960 and the outlet 700 The discharge space 20 is formed.

The length of the central portion of the guide 960 is formed to be relatively longer than the lengths of the one end and the other end of the guide 960, so that the space formed in the upper and lower portions of the central portion of the guide 960 extends from one end to the other end of the catalyst plate 940. It is formed in the shape of a cuboid.

Each of the catalyst units 920 is stacked up and down in a form in which one end of the guide 960 is combined with one end of the catalyst plate 940 corresponding to the catalyst unit 920 located at the upper portion.

The guide 960 corresponding to the catalyst unit 920 positioned on the upper portion of the catalyst unit 900 is coupled to the upper portion of the frame 910, and corresponds to the catalyst unit 920 positioned below the catalyst unit 900. The catalyst plate 940 is a separate guide 960 is added to the lower portion of the frame 910 is coupled to the inner space of the frame 910 with the catalyst unit 920 between the inlet space 10 and the outlet space (20).

Through the shape of the guide 960, the space between the guide 960 and the catalyst plate 940 extends so that the size of the space is uniform from one end to the other end of the catalyst plate 940, and moves toward the gas outlet 700. It has this seamless advantage.

In addition, the space formed between the catalyst units 920 is also formed in an extended form while maintaining a space of a uniform size from one end to the other end of the catalyst plate 940, so that the gas moves smoothly to the discharge unit 700 There are advantages.

Therefore, since the gas flowing into the inflow space 10 is easily introduced to the other end of the catalyst plate 940 between the catalyst plate 940 and the guide 960, the reaction between the gas and the catalyst plate 940 is smooth. There is this.

In addition, after reacting with the catalyst plate 940, the gas discharged to the discharge space 20 located at the lower portion has an advantage of smoothly moving to the discharge unit 700 along the central portion of the guide 960 coupled to the lower portion.

Meanwhile, the guide 962 illustrated in FIG. 9 is formed in a shape having a concave curved surface toward the top, and can be used by being coupled to each of the catalyst units 920 in place of the guide 960.

When the guide 962 is used in combination with the catalyst unit 920, gas can be introduced into the space between the guide 962 and the catalyst plate 940 in a short time and the space of the inflow space 10 itself increases. When a large amount of gas is irregularly introduced and stagnated into the selective catalytic reduction device 140, there is an advantage of gradually discharging the gas to the discharge unit 700.

The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but the embodiments described in the specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and represent all technical spirits of the present invention. It should be understood that there may be various equivalents and modifications that can replace them at the time of application. Therefore, the embodiments described above are to be understood in all respects as illustrative and not restrictive, and the scope of the present invention is indicated by the following claims rather than the detailed description, and the meaning and scope of the claims It should be construed that any altered or modified form derived from the equivalent concept is included in the scope of the present invention.

100, 120, 140: selective catalytic reduction device 200: inlet
300: mixing unit 400: distribution unit
500: diffusion unit 600: catalyst unit
700: discharge unit 800: lift

Claims (8)

It is formed in the form of a duct extending from one end to the other end, the interior space includes an inlet including sloping plates arranged to be spaced apart from each other;
A mixing unit having one end formed in a duct shape coupled to the other end of the inlet;
One end is coupled to the other end of the mixing portion, the other end is bent and extended toward one side and the distribution portion is formed to be divided into a plurality of spaces inside;
One end is a diffusion portion coupled to the other end of the distribution portion, is formed to extend and extend toward the other end; And
One end is coupled to the other end of the diffusion unit and the other end is coupled to the outlet, the inner space includes a catalyst unit including catalyst units formed adjacent to the other end;
The catalytic units are combined with each other to bend in a zigzag form toward one end and the other end of the catalyst part, extend toward the bottom and are combined with the catalyst part to form a selective catalytic reduction device characterized in that formed to separate the internal space of the catalyst part.
According to claim 1, Each of the catalyst unit,
One end is disposed toward the distribution portion, the other end is formed to extend toward the outlet catalyst plate; And
One end is disposed so as to be spaced apart from the catalyst plate on one end of the catalyst plate, the other end is extended inclined toward the other end of the catalyst plate guide coupled to the other end of the catalyst plate; selective catalytic reduction comprising a Device.
According to claim 2, The catalyst units,
Selective catalytic reduction device, characterized in that one end of the guide is coupled to one end of the catalyst plate of any one of the catalyst units located on the top and stacked with each other.
According to claim 1, The mixing unit,
A reducing agent inlet formed to open and close a part of the outside; And
Selective catalytic reduction device comprising a; nozzles that are disposed in the interior space of the mixing unit through the reducing agent injection port for injecting a reducing agent.
According to claim 4, The mixing unit,
One end is coupled to the inner surface of the mixing portion, the other end is extended toward the center of the distribution portion guide unit is formed a concave curved surface toward the inside of the mixing portion; And
One end is coupled to the lower end of the guide unit, the other end is extended toward the upper portion of the guide unit and coupled to the upper end of the guide unit, the separation plate is formed on both sides extending toward both sides of the distribution unit; Selective catalytic reduction device further comprising a.
According to claim 4, The distribution unit,
Selective catalytic reduction device, characterized in that each end is disposed in a state spaced from each other at both ends of the distribution part, the other end comprises curved surface guide plates extending and forming a curved surface parallel to each other toward one end of the diffusion part. .
According to claim 1, The diffusion unit,
In the inner space includes a plurality of diffusion plates formed to extend obliquely from one end to the other end of the diffusion portion,
Selective catalytic reduction device, characterized in that the inclination angle increases as the diffusion plates are disposed on the upper portion.
According to claim 2,
Selective catalytic reduction device further comprises a lifting unit for moving one end of the catalyst plate toward the upper or lower depending on the moving speed of the gas.

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