A flue gas treatment device

Abstract

This utility model provides a flue gas treatment device, including a shell forming a reaction space, an air inlet communicating with the reaction space at the bottom side of the shell, and an air outlet communicating with the reaction space at the top surface of the shell; a connecting sleeve, which is a cylindrical shape with open ends, one of the open ends connecting to the air inlet; a descaling liquid delivery pipe disposed on the outer side of the top side wall of the connecting sleeve; and multiple descaling liquid spray heads disposed on the inner side of the connecting sleeve and distributed horizontally, with the distribution direction perpendicular to the air inlet direction. The multiple descaling liquid spray heads are positioned facing the air inlet and are connected to the descaling liquid delivery pipe via a pipe passing through the top side wall of the connecting sleeve, thereby spraying descaling liquid into the reaction space through the air inlet. The descaling liquid sprayed by the descaling liquid spray heads can be sprayed into the reaction space, descaling a portion of the reaction space near the air inlet, slowing down the scaling rate, and facilitating subsequent cleaning.

Description

Technical Field

[0001] This utility model relates to the field of flue gas treatment technology, and in particular to a flue gas treatment device. Background Technology

[0002] Large quantities of flue gas generated by factories need to be treated and purified before being discharged. Currently, gas-liquid reaction technology is commonly used for flue gas treatment. In this process, the flue gas to be treated is transported to a reaction chamber, where a slurry is released into the chamber via spray nozzles on a slurry delivery pipe. The slurry reacts with the flue gas, removing harmful substances and thus treating the gas. However, during this process, scaling occurs on the inner walls and internal components of the reaction chamber, negatively impacting the treatment equipment. The inlet area at the bottom of the equipment, in particular, is prone to scaling due to the higher temperature of the flue gas initially entering the reaction chamber. Utility Model Content

[0003] One objective of this invention is to provide a flue gas treatment device that can help reduce the scaling rate in the bottom air inlet area of ​​the flue gas treatment device.

[0004] Specifically, this utility model provides a flue gas treatment device, comprising:

[0005] The outer shell has a reaction space, and an air inlet communicating with the reaction space is formed on the bottom side of the outer shell, and an air outlet communicating with the reaction space is formed on the top surface of the outer shell.

[0006] The adapter sleeve is a cylindrical shape with openings at both ends, and one of the open ends is connected to the air inlet.

[0007] A descaling fluid delivery pipe is disposed on the outer side of the top side wall of the adapter sleeve; and

[0008] Multiple descaling liquid spray heads are disposed on the inner side of the adapter sleeve and distributed horizontally, with the distribution direction perpendicular to the air intake direction of the air inlet. The multiple descaling liquid spray heads are arranged facing the air inlet. The multiple descaling liquid spray heads are connected to the descaling liquid delivery pipe through a pipe passing through the top side wall of the adapter sleeve, thereby spraying descaling liquid into the reaction space through the air inlet.

[0009] Optionally, the descaling liquid spray head is tilted upward along the air intake direction of the air inlet.

[0010] Optionally, the acute angle formed between the axis of the descaling spray head and the horizontal plane is set to 5 to 30 degrees.

[0011] Optionally, the closest distance between the descaling liquid spray head and the inner top wall of the adapter sleeve is set to 10-40 cm.

[0012] Optionally, along the distribution direction of the plurality of descaling liquid spray heads, the two descaling liquid spray heads located at the two ends are tilted toward the other along the air intake direction of the air inlet.

[0013] Optionally, the closest distance between the descaling liquid spray head and the air inlet is set to 10-50 cm.

[0014] Optionally, the inner bottom wall of the adapter sleeve is inclined from high to low along the air intake direction of the air inlet, and the acute angle formed by the inner bottom wall of the adapter sleeve and the horizontal plane is set to 1 to 15 degrees.

[0015] Optionally, a sludge collection tank is provided on the bottom surface of the outer shell, and the bottom surface of the outer shell slopes from high to low from the periphery of the sludge collection tank towards the location of the sludge collection tank.

[0016] Optionally, the flue gas treatment device further includes:

[0017] A slurry delivery pipe is disposed within the reaction space and is lower than the highest point of the air inlet. The slurry delivery pipe extends from the side of the outer shell opposite to the air inlet to the side where the air inlet is located. The slurry delivery pipe is equipped with a slurry spray head for spraying reaction slurry into the reaction space.

[0018] Optionally, the flue gas treatment device further includes:

[0019] Filtering device, including:

[0020] The container body includes a filtration chamber, an inlet, and an outlet communicating with the filtration chamber. The inlet receives the raw reaction slurry, and the outlet connects to the slurry delivery pipe.

[0021] A filter screen is disposed within the filter chamber, thereby dividing the filter chamber into two parts, with the inlet and outlet located on opposite sides of the filter screen.

[0022] This utility model's flue gas treatment device utilizes an adapter sleeve connected to the air inlet. A descaling liquid delivery pipe is installed on the outer side of the top sidewall of the adapter sleeve, and multiple descaling liquid spray heads are arranged on the inner side of the adapter sleeve, with their distribution direction perpendicular to the air inlet direction. The descaling liquid spray heads are connected to the descaling liquid delivery pipe via a pipe passing through the adapter sleeve, thereby delivering descaling liquid to the descaling liquid spray heads and spraying the descaling liquid into the reaction space. On one hand, the horizontally distributed descaling liquid spray heads, close to the top sidewall of the adapter sleeve, create a water curtain of descaling liquid covering the air inlet from top to bottom. This forces the flue gas to pass through the water curtain before entering the reaction space, reducing the temperature of the flue gas entering the reaction space and weakening the promoting effect of high-temperature flue gas on scaling, thus slowing down the scaling rate within the reaction space, particularly in the bottom part of the air inlet area near the air inlet of the flue gas treatment device. On the other hand, the descaling solution sprayed by the descaling solution spray head can be sprayed into the reaction space to descale the area near the air inlet, further slowing down the scaling rate in the air intake area at the bottom of the flue gas treatment device, which is easier to clean later.

[0023] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0024] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0025] Figure 1 This is a schematic diagram of a flue gas treatment device according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic cross-sectional view of a flue gas treatment device according to an embodiment of the present invention;

[0027] Figure 3 This is a partial schematic diagram of a flue gas treatment device according to an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of a filter device and a slurry conveying pipe in a flue gas treatment device according to an embodiment of the present invention;

[0029] Figure 5 This is a schematic cross-sectional view of a filter device in a flue gas treatment apparatus according to an embodiment of the present invention. Detailed Implementation

[0030] Those skilled in the art should understand that the embodiments described below are merely some embodiments of the present invention, and not all embodiments of the present invention. These embodiments are intended to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Based on the embodiments provided by the present invention, all other embodiments obtained by those skilled in the art without creative effort should still fall within the scope of protection of the present invention.

[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0032] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] like Figures 1 to 3 As shown, in one embodiment, the flue gas treatment device 10 includes a housing 100, an adapter sleeve 200, a descaling liquid delivery pipe 300, and two descaling liquid spray heads 400. The housing 100 forms a reaction space 101, and an air inlet 102 communicating with the reaction space 101 is formed on the bottom side of the housing 100. An air outlet 103 communicating with the reaction space 101 is formed on the top surface of the housing 100. The adapter sleeve 200 is a cylindrical shape with openings at both ends, and one of the open ends is connected to the air inlet 102. The descaling liquid delivery pipe 300 is disposed on the outside of the adapter sleeve 200. Two descaling liquid spray heads 400 are disposed inside the adapter sleeve 200 and distributed horizontally, perpendicular to the air intake direction of the air inlet 102. The descaling liquid spray heads 400 are positioned facing the air inlet 102 and are connected to the descaling liquid delivery pipe 300 via a pipe passing through the top side wall of the adapter sleeve 200, thereby spraying descaling liquid into the reaction space 101 through the air inlet 102. The descaling liquid can be clean water, a solution of mixed descaling agents, etc.

[0034] like Figures 1 to 3 As shown, specifically, the outer shell 100 can be divided into a main shell portion 110, a top shell portion 120, and a bottom plate 130. The main shell portion 110 is cylindrical in shape, open at both the top and bottom. An air inlet 102 is located on one side wall of the main shell portion 110, at the bottom of that side wall. The top shell portion 120 is also open at both the top and bottom, located at the top of the main shell portion 110, thus connecting with the internal space of the main shell portion 110. The top opening of the top shell portion 120 is the air outlet 103. The bottom plate 130 is located at the bottom opening of the main shell portion 110, thus closing the bottom of the main shell portion 110.

[0035] It should be noted that the outer shell 100 is divided into the main shell 110, the top shell 120 and the bottom plate 130 for the purpose of explaining the scheme of this embodiment. The main shell 110, the top shell 120 and the bottom plate 130 can be formed separately or integrally.

[0036] refer to Figures 1 to 3 As shown, for ease of explanation, the side wall where the air inlet 102 is located is defined as the front side wall, and the side wall opposite it is defined as the rear side wall. That is, the air intake direction along the air inlet 102 is the front-rear direction of the equipment, and the lateral direction perpendicular to the air intake direction is the left-right direction of the equipment.

[0037] like Figures 1 to 3 As shown, the adapter sleeve 200 is a square tube with openings at both ends. One end with an opening is connected to the outer shell 100 at the air inlet 102, and the other end with an opening is used to connect to an external pipe to receive the flue gas to be treated, so that the flue gas to be treated can flow through the area enclosed by the adapter sleeve 200 to the air inlet 102, and then flow into the reaction space 101 from the air inlet 102.

[0038] like Figures 1 to 3 As shown, the descaling liquid delivery pipe 300 is located at the top of the adapter sleeve 200, extending from one side of the adapter sleeve 200 to the other side in the left-right direction of the flue gas treatment device 10. Two descaling liquid spray heads 400 are distributed along the left-right direction of the flue gas treatment device 10 and are connected to the descaling liquid delivery pipe 300 via pipes passing through the top side wall of the adapter sleeve 200. Therefore, the two descaling liquid spray heads 400 can receive descaling liquid from the descaling liquid delivery pipe 300 and spray the descaling liquid toward the air inlet 102, thereby spraying it into the reaction space 101.

[0039] In this embodiment, the adapter sleeve 200 is connected to the air inlet 102. A descaling liquid delivery pipe 300 is provided on the outer side of the top side wall of the adapter sleeve 200. Multiple descaling liquid spray heads 400 are provided on the inner side of the adapter sleeve 200, with their distribution direction perpendicular to the air intake direction of the air inlet 102. The descaling liquid spray heads 400 are connected to the descaling liquid delivery pipe 300 through a pipe passing through the adapter sleeve 200. Descaling liquid is delivered to the descaling liquid spray heads 400 through the descaling liquid delivery pipe 300, and descaling liquid is sprayed into the reaction space 102 through the descaling liquid spray heads 400. On the one hand, the descaling liquid spray heads 400 are laterally distributed and close to the top side wall of the adapter sleeve 200, so that the descaling liquid sprayed by the descaling liquid spray heads 400 forms a water curtain covering the air inlet 102 from top to bottom. This forces the flue gas to pass through the water curtain before entering the reaction space 101, thereby reducing the temperature of the flue gas entering the reaction space 101 and weakening the promoting effect of high-temperature flue gas on scaling. This slows down the scaling rate in the reaction space 101, especially the scaling rate in the air intake area near the air inlet 102 at the bottom of the flue gas treatment device 10. On the other hand, the descaling liquid sprayed by the descaling liquid spray heads 400 can be sprayed into the reaction space 101 to descale the area near the air inlet 102, further slowing down the scaling rate in the air intake area near the air inlet 102 at the bottom of the flue gas treatment device 10, facilitating subsequent cleaning.

[0040] It should be noted that in some other embodiments, the flue gas treatment device may also be equipped with three or more descaling liquid spray heads.

[0041] like Figures 1 to 3 As shown, a sludge collection tank 104 is provided on the bottom surface of the outer casing 100, and the bottom surface of the outer casing 100 slopes from high to low towards the location of the sludge collection tank 104. Specifically, the sludge collection tank 104 is provided on the bottom plate 130, and the bottom plate 130 slopes towards the sludge collection tank 104. This structure allows the flushed dirt and reacted slurry to fall onto the bottom surface of the outer casing 100 and be collected in the sludge collection tank 104, and then discharged from the sludge collection tank 104, which is beneficial for the collection of dirt and reacted slurry and subsequent treatment.

[0042] like Figures 1 to 4 As shown, the flue gas treatment device 10 also includes two slurry conveying pipes 500. The slurry conveying pipes 500 are located inside the reaction space 101 and are lower than the highest point of the air inlet 102. The slurry conveying pipes 500 extend from the side of the outer shell 100 opposite to the air inlet 102 to the side where the air inlet 102 is located. The slurry conveying pipes 500 are equipped with slurry spray heads (not marked in the figure) for spraying reaction slurry into the reaction space 101.

[0043] like Figures 1 to 4As shown, two slurry delivery pipes 500 are distributed along the left-right direction of the equipment within the reaction space 101. Both the slurry delivery pipes 500 and the slurry spray heads on them are lower than the highest point of the air inlet 102. That is, on the same vertical plane, the highest point of the projection of the slurry delivery pipe 500 is lower than the highest point of the projection of the air inlet 102. Alternatively, the slurry delivery pipes 500 are positioned at the bottom of the reaction space 101, directly opposite the air inlet 102 along the front-rear direction of the equipment. Furthermore, the slurry delivery pipes 500 extend from the rear to the front of the equipment. Specifically, the slurry delivery pipes 500 pass through the rear sidewall of the equipment and extend into the reaction space 101, extending from the rear sidewall to the front sidewall, i.e., towards the air inlet 102.

[0044] By setting a slurry delivery pipe 500 lower than the air inlet 102 within the reaction space 101, and making the slurry delivery pipe 500 extend from the side of the outer shell 100 opposite to the air inlet 102 towards the side where the air inlet 102 is located, the slurry delivery pipe 500 is positioned in the portion of the bottom of the reaction space 101 directly opposite the air inlet 102 along the front-to-back direction of the equipment. When flue gas enters the reaction space 101 through the air inlet 102, at the bottom of the reaction space 101, the flue gas will flow approximately along the axial direction of the lowest slurry delivery pipe 500 through the area where the slurry delivery pipe 500 is located, thereby reacting with the reaction slurry sprayed by multiple slurry spray heads distributed along the extension direction of the slurry delivery pipe 500. Therefore, this solution takes into account the characteristics of flue gas density and easy deposition, and makes full use of the lateral flow properties of flue gas. In conjunction with the slurry delivery pipe 500 set in the bottom area directly opposite the air inlet 102, the reaction effect of the reaction slurry and flue gas in the bottom area of ​​the equipment is improved. This allows the equipment to have a better flue gas treatment effect by expanding the reaction space 101 laterally, while helping to reduce the height of the equipment and thus improve the stability of the equipment.

[0045] Furthermore, because a descaling liquid spray head 400 is provided, even if the slurry delivery pipe 500 is located in the space directly opposite the air inlet 102, the descaling liquid sprayed by the descaling liquid spray head 400 can be used to descale the slurry delivery pipe 500, reducing the scaling phenomenon in the part of the slurry delivery pipe 500 near the air inlet 102, and avoiding the problem of severe scaling and blockage caused by the slurry delivery pipe 500 being too close to the air inlet 102.

[0046] It should be noted that, in addition to the slurry conveying pipe below the air inlet, the flue gas treatment device may also be equipped with multiple sets of slurry conveying pipes that are above the air inlet and distributed longitudinally.

[0047] like Figures 1 to 5As shown, in one embodiment, the flue gas treatment device 10 further includes a filter device 600, which includes a container body 610 and a filter screen 620. The container body 610 forms a filter chamber 611, and an inlet 612 and an outlet 613 communicating with the filter chamber 611. The inlet 612 is used to receive raw slurry, and the outlet 613 is used to connect to the slurry delivery pipe 500. The filter screen 620 is disposed in the filter chamber 611, thereby dividing the filter chamber 611 into two parts, and the inlet 612 and the outlet 613 are respectively located on both sides of the filter screen 620.

[0048] Therefore, the raw slurry entering the filter chamber 611 through the inlet 612 can only reach the outlet 613 after passing through the filter screen 620, and then enter the slurry delivery pipe 500. In other words, the slurry entering the slurry delivery pipe 500 has been filtered, thereby reducing the occurrence of clogging in the slurry delivery pipe 500.

[0049] like Figures 1 to 3 As shown, the descaling liquid spray head 400 is tilted upwards along the air intake direction of the air inlet 102. Specifically, the descaling liquid spray head 400 is tilted upwards along the direction from front to back in the flue gas treatment device 10. This structure helps to increase the spraying distance of the descaling liquid spray head 400 in the air intake direction, thereby helping to improve the descaling range.

[0050] like Figures 1 to 3 As shown, the acute angle formed between the axis of the descaling spray head 400 and the horizontal plane is set to 5 to 30 degrees. For example, it can be 5 degrees, 10 degrees, 15 degrees, 20 degrees, 25 degrees, or 30 degrees.

[0051] By setting the acute angle between the axis of the descaling fluid spray head 400 and the horizontal plane to 5–30 degrees, the descaling fluid spray head 400 achieves a longer spray distance in the air intake direction and a larger spray coverage of the air inlet 102 in the longitudinal direction, which helps to achieve a better cooling effect on the flue gas at the air inlet 102. Additionally, it prevents the descaling fluid sprayed by the descaling fluid spray head 400 from being blocked by the top side wall of the adapter sleeve 200.

[0052] like Figures 1 to 3 As shown, the closest distance between the descaling liquid spray head 400 and the inner top wall of the adapter sleeve 200 is set to 10-40 cm, for example, it can be 10 cm, 15 cm, 20 cm, 25 cm, 30 cm, 35 cm or 40 cm, etc. Combined with the upward tilt angle of the descaling liquid spray head 400 along the air intake direction, it effectively avoids the descaling liquid sprayed by the descaling liquid spray head 400 being blocked by the top side wall of the adapter sleeve 200.

[0053] like Figures 1 to 3As shown, along the distribution direction of the multiple descaling liquid spray heads 400, the two descaling liquid spray heads 400 located at the two ends are tilted towards each other along the air intake direction of the air inlet 102. That is to say, the two descaling liquid spray heads 400 at the two ends are close to each other along the air intake direction, expanding the overlapping area of ​​the spray range of the two descaling liquid spray heads 400 at the two ends, which has a better cooling effect on the flue gas and improves the descaling effect on the reaction space 101.

[0054] It should be noted that when there are only two descaling liquid spray heads 400, the two descaling liquid spray heads 400 are the two descaling liquid spray heads 400 at the two outermost ends.

[0055] like Figures 1 to 3 As shown, the closest distance between the descaling liquid spray head 400 and the air inlet 102 is set to 10-50 cm. For example, it can be 10 cm, 15 cm, 20 cm, 25 cm, 30 cm, 35 cm, 40 cm, 45 cm, or 50 cm, etc.

[0056] By setting the closest distance between the descaling liquid spray head 400 and the air inlet 102 to 10-50 cm, the distance between the descaling liquid spray head 400 and the air inlet 102 is appropriate. This not only prevents the reaction slurry in the reaction space 101 from splashing onto the descaling liquid spray head 400, but also ensures that the descaling liquid spray head 400 has a good descaling effect on the slurry spray head of the slurry delivery pipe 500 near the air inlet 102.

[0057] like Figure 2 As shown, the inner bottom wall of the adapter sleeve 200 slopes from high to low along the air intake direction of the air inlet 102, and the acute angle formed by the inner bottom wall of the adapter sleeve 200 and the horizontal plane is set to 1 to 15 degrees, for example, it can be 1 degree, 2 degrees, 3 degrees, 4 degrees, 5 degrees, 6 degrees, 7 degrees, 8 degrees, 9 degrees, 10 degrees, 11 degrees, 12 degrees, 13 degrees, 14 degrees or 15 degrees, etc., so as to avoid the liquid sprayed by the descaling spray head 400 flowing back to other components and causing damage to other components such as pumps, while allowing the flue gas to enter the air inlet 102 with a better flow path.

[0058] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A flue gas treatment device, characterized in that, include: The outer shell has a reaction space, and an air inlet communicating with the reaction space is formed on the bottom side of the outer shell, and an air outlet communicating with the reaction space is formed on the top surface of the outer shell. The adapter sleeve is a cylindrical shape with openings at both ends, and one of the open ends is connected to the air inlet. The descaling solution delivery pipe is located on the outer side of the top side wall of the adapter sleeve; and Multiple descaling liquid spray heads are disposed on the inner side of the adapter sleeve and distributed horizontally, with the distribution direction perpendicular to the air intake direction of the air inlet. The multiple descaling liquid spray heads are arranged facing the air inlet. The multiple descaling liquid spray heads are connected to the descaling liquid delivery pipe through a pipe passing through the top side wall of the adapter sleeve, thereby spraying descaling liquid into the reaction space through the air inlet. The flue gas treatment device also includes: A slurry delivery pipe is disposed within the reaction space and is lower than the highest point of the air inlet. The slurry delivery pipe extends from the side of the outer shell opposite to the air inlet to the side where the air inlet is located. The slurry delivery pipe is equipped with a slurry spray head for spraying reaction slurry into the reaction space.

2. The flue gas treatment device according to claim 1, characterized in that, The descaling liquid spray head is tilted upwards along the air intake direction of the air inlet.

3. The flue gas treatment device according to claim 2, characterized in that, The acute angle formed between the axis of the descaling spray head and the horizontal plane is set to 5-30 degrees.

4. The flue gas treatment device according to claim 3, characterized in that, The closest distance between the descaling liquid spray head and the inner top wall of the adapter sleeve is set to 10-40 cm.

5. The flue gas treatment device according to claim 1, characterized in that, Along the distribution direction of the plurality of descaling liquid spray heads, the two descaling liquid spray heads located at the two ends are tilted toward the other along the air intake direction of the air inlet.

6. The flue gas treatment device according to claim 1, characterized in that, The minimum distance between the descaling liquid spray head and the air inlet is set to 10-50 cm.

7. The flue gas treatment device according to claim 1, characterized in that, The inner bottom wall of the adapter sleeve slopes from high to low along the air intake direction of the air inlet, and the acute angle formed between the inner bottom wall of the adapter sleeve and the horizontal plane is set to 1~15 degrees.

8. The flue gas treatment device according to claim 1, characterized in that, The bottom surface of the outer shell is provided with a sludge collection tank, and the bottom surface of the outer shell slopes from high to low from the periphery of the sludge collection tank towards the location of the sludge collection tank.

9. The flue gas treatment device according to claim 1, characterized in that, Also includes: Filtering device, including: The container body has a filter chamber, and an inlet and an outlet communicating with the filter chamber. The inlet is used to receive the raw reaction slurry, and the outlet is used to connect to the slurry delivery pipe. and A filter screen is disposed within the filter chamber, thereby dividing the filter chamber into two parts, with the inlet and outlet located on opposite sides of the filter screen.

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