Flue gas treatment device

Abstract

The invention provides a flue gas treatment device, which comprises: an absorption tower, which comprises a tower body, a main spray pipe arranged in the tower body and a plurality of filler layers arranged in the tower body, a liquid inlet is located at the top of the tower body and is communicated with the main spray pipe, and the plurality of filler layers are arranged at intervals from top to bottom and are located between the liquid inlet and a flue gas inlet; the liquid supplementing device comprises a liquid supplementing box arranged on the outer side of the tower body, a liquid supplementing pump connected with the liquid supplementing box and an auxiliary spraying pipe connected with the liquid supplementing pump, a mounting hole is formed in the side wall of the tower body, the mounting hole is located between the two adjacent filler layers in the middle, and the auxiliary spraying pipe penetrates through the mounting hole in a removable mode and extends into the tower body; and the sealing structure is arranged at the mounting hole in an openable and closable manner. According to the technical scheme, the problem that the trapping efficiency of the flue gas treatment device is low due to the fact that an absorption tower needs to be shut down to add an absorbent in the prior art is effectively solved.

Description

Technical Field

[0001] The present invention relates to the field of carbon dioxide capture, and in particular to a flue gas treatment device. Background Art

[0002] In the process of carbon dioxide capture, an absorber is used to capture carbon dioxide in flue gas by chemical absorption. Commonly used absorbents such as monoethanolamine (MEA), diethanolamine (DEA) or methyldiethanolamine (MDEA) react chemically with carbon dioxide to generate corresponding carbonates. The reaction rate in the absorber depends on many factors, including the concentration of the absorbent, the partial pressure of carbon dioxide, temperature, pH value, etc.

[0003] If the reaction rate is slow, it is due to insufficient absorbent concentration. In order to replenish the absorbent, the absorber needs to be stopped to add it to maintain the efficiency and absorption capacity of the absorber. If it is necessary to stop the machine to add absorbent, the reaction process will be temporarily interrupted, affecting the continuous operation of the flue gas treatment device, resulting in low capture efficiency. Summary of the invention

[0004] The main purpose of the present invention is to provide a flue gas treatment device to solve the problem in the related art that the absorption tower needs to be shut down to add absorbent, resulting in low capture efficiency of the flue gas treatment device.

[0005] In order to achieve the above-mentioned object, the present invention provides a flue gas treatment device, comprising: an absorption tower, comprising a tower body, a main spray pipe arranged in the tower body, and a plurality of packing layers arranged in the tower body, the tower body is provided with a flue gas inlet, a flue gas outlet, a liquid inlet and a liquid outlet, the liquid inlet is located at the top of the tower body and is connected to the main spray pipe, the plurality of packing layers are arranged at intervals from top to bottom, and the plurality of packing layers are located between the liquid inlet and the flue gas inlet; a liquid replenishing device, comprising a liquid replenishing tank arranged outside the tower body, a liquid replenishing pump connected to the liquid replenishing tank, and an auxiliary spray pipe connected to the liquid replenishing pump A mounting hole is provided on the side wall of the tower body, and the mounting hole is located between two adjacent packing layers in the middle, wherein the two adjacent packing layers in the middle are located between the uppermost packing layer and the lowermost packing layer, and the auxiliary spray pipe can be removably passed through the mounting hole and extended into the tower body; a sealing structure can be openably and closably arranged at the mounting hole, when the sealing structure is opened, the auxiliary spray pipe passes through the mounting hole and extends into the tower body, and the sealing structure seals the gap between the auxiliary spray pipe and the mounting hole, and when the sealing structure is closed, the auxiliary spray pipe is moved out of the mounting hole, and the sealing structure blocks the mounting hole.

[0006] Furthermore, the auxiliary spray pipe is swingably arranged around its axis.

[0007] Furthermore, the flue gas treatment device also includes a motor arranged outside the tower body and a gear transmission structure connected between the motor and the auxiliary spray pipe.

[0008] Furthermore, there are two mounting holes, which are respectively arranged on two opposite side walls of the tower body, and the auxiliary spray pipe includes two detachably connected pipe sections, and the two pipe sections are respectively removable and pass through the two mounting holes.

[0009] Furthermore, one of the two pipe sections is provided with a threaded hole, and the other pipe section is provided with a threaded section connected to the threaded hole.

[0010] Furthermore, the sealing structure includes a sealing seat, a fluororubber ring arranged on the sealing seat and a pressure ring for fixing the fluororubber ring. The sealing seat, the fluororubber ring and the pressure ring can all be sleeved on the auxiliary spray pipe.

[0011] Furthermore, the sealing structure also includes an elastic member and an adjustment seat arranged on the sealing seat, the elastic member is clamped between the adjustment seat and the sealing seat, the fluororubber ring is arranged on the adjustment seat, and both the adjustment seat and the elastic member can be sleeved on the auxiliary spray pipe.

[0012] Furthermore, the sealing structure also includes a clamping seat, an O-ring and a silicone rubber ring. The clamping seat can be sleeved on the auxiliary spray pipe, the O-ring is located between the outer side of the clamping seat and the sealing seat, and the silicone rubber ring is located between the inner side of the clamping seat and the auxiliary spray pipe.

[0013] Furthermore, the sealing structure also includes a first steel wire retaining ring and a second steel wire retaining ring, the first steel wire retaining ring is located between the adjustment seat and the pressing seat, and the second steel wire retaining ring is located between the pressing seat and the pressing ring.

[0014] Furthermore, the sealing structure also includes a sealing cover detachably connected to the sealing seat.

[0015] Applying the technical solution of the present invention, the flue gas treatment device includes: an absorption tower, a liquid replenishment device and a sealing structure. The absorption tower includes a tower body, a main spray pipe arranged in the tower body and a plurality of packing layers arranged in the tower body, and the tower body is provided with a flue gas inlet, a flue gas outlet, a liquid inlet and a liquid outlet. The liquid inlet is located at the top of the tower body and is connected to the main spray pipe. The plurality of packing layers are arranged at intervals from top to bottom, and the plurality of packing layers are located between the liquid inlet and the flue gas inlet. The liquid replenishment device includes a liquid replenishment tank arranged outside the tower body, a liquid replenishment pump connected to the liquid replenishment tank and an auxiliary spray pipe connected to the liquid replenishment pump. A mounting hole is provided on the side wall of the tower body, and the mounting hole is located between two adjacent packing layers in the middle, wherein the two adjacent packing layers in the middle are located between the uppermost packing layer and the lowermost packing layer, and the auxiliary spray pipe can be removably passed through the mounting hole and extended into the tower body. The sealing structure can be opened and closed and arranged at the mounting hole. When the sealing structure is opened, the auxiliary spray pipe passes through the installation hole and extends into the tower body, and the sealing structure seals the gap between the auxiliary spray pipe and the installation hole. When the sealing structure is closed, the auxiliary spray pipe moves out of the installation hole, and the sealing structure blocks the installation hole. Flue gas enters the tower body from the flue gas inlet and passes through multiple packing layers from bottom to top in sequence. During the process of passing through, the absorbent in the main spray pipe is sprayed from top to bottom, so that the absorbent and flue gas are subjected to carbon dioxide capture treatment in the packing layer to increase the reaction rate. Finally, the purified flue gas is discharged from the flue gas outlet. After the absorbent in the main spray pipe passes through multiple packing layers from top to bottom, its concentration gradually decreases. At this time, the replenishment pump is turned on, and the replenishment pump adds the absorbent in the replenishment tank to the packing layer below the topmost packing layer through the auxiliary spray pipe, which effectively increases the concentration of the absorbent. In addition, the sealing structure can seal the mounting hole, so that the auxiliary spray pipe can continue to add absorbent to the packing layer below the topmost packing layer without stopping the absorption tower, and will not interrupt the reaction process, so that the flue gas treatment device can operate continuously and ensure the capture efficiency. Therefore, the technical solution of the present application effectively solves the problem in the related art that the absorption tower needs to be shut down to add absorbent, resulting in low capture efficiency of the flue gas treatment device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A simplified structural diagram of an embodiment of a flue gas treatment device according to the present invention is shown;

[0018] Figure 2 Shows Figure 1 A schematic cross-sectional view of the sealing structure of a flue gas treatment device.

[0019] The above drawings include the following reference numerals:

[0020] 10. Absorption tower; 11. Tower body; 12. Flue gas inlet; 13. Flue gas outlet; 14. Liquid inlet; 15. Liquid outlet; 16. Mounting hole; 17. Main spray pipe; 18. Packing layer;

[0021] 20. Liquid replenishing device; 21. Liquid replenishing tank; 22. Liquid replenishing pump; 23. Auxiliary spray pipe;

[0022] 30. Sealing structure; 31. Elastic member; 32. Adjusting seat; 33. Sealing seat; 331. Fluorine rubber ring; 332. O-ring; 333. Silicon rubber ring; 334. First steel wire retaining ring; 335. Second steel wire retaining ring; 34. Pressing ring; 35. Pressing seat; 36. Sealing cover;

[0023] 41. Motor; 42. Gear transmission structure;

[0024] 51. Regeneration tower; 52. Heat exchanger. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0027] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0028] like Figure 1 and Figure 2 As shown, the present application provides a flue gas treatment device, and an embodiment of the flue gas treatment device includes: an absorption tower 10, a liquid replenishing device 20 and a sealing structure 30. The absorption tower 10 includes a tower body 11, a main spray pipe 17 arranged in the tower body 11, and a plurality of packing layers 18 arranged in the tower body 11. The tower body 11 is provided with a flue gas inlet 12, a flue gas outlet 13, a liquid inlet 14 and a liquid outlet 15. The liquid inlet 14 is located at the top of the tower body 11 and is connected to the main spray pipe 17. The plurality of packing layers 18 are arranged at intervals from top to bottom, and the plurality of packing layers 18 are located between the liquid inlet 14 and the flue gas inlet 12. The liquid replenishing device 20 includes a liquid replenishing tank 21 arranged outside the tower body 11, a liquid replenishing pump 22 connected to the liquid replenishing tank 21, and an auxiliary spraying pipe 23 connected to the liquid replenishing pump 22. A mounting hole 16 is provided on the side wall of the tower body 11. The mounting hole 16 is located between two adjacent packing layers 18 in the middle, wherein the two adjacent packing layers 18 in the middle are located between the uppermost packing layer 18 and the lowermost packing layer 18. The auxiliary spray pipe 23 can be removably passed through the mounting hole 16 and extended into the tower body 11. The sealing structure 30 is openably and closably provided at the mounting hole 16. When the sealing structure 30 is opened, the auxiliary spray pipe 23 passes through the mounting hole 16 and extends into the tower body 11, and the sealing structure 30 seals the gap between the auxiliary spray pipe 23 and the mounting hole 16. When the sealing structure 30 is closed, the auxiliary spray pipe 23 is moved out of the mounting hole 16, and the sealing structure 30 blocks the mounting hole 16.

[0029] Applying the technical solution of this embodiment, the flue gas treatment device includes: an absorption tower 10, a liquid replenishing device 20 and a sealing structure 30. When the sealing structure 30 is opened, the auxiliary spray pipe 23 passes through the mounting hole 16 and extends into the tower body 11, and the sealing structure 30 seals the gap between the auxiliary spray pipe 23 and the mounting hole 16. When the sealing structure 30 is closed, the auxiliary spray pipe 23 moves out of the mounting hole 16, and the sealing structure 30 blocks the mounting hole 16. The flue gas enters the tower body 11 from the flue gas inlet 12, and passes through a plurality of packing layers 18 from bottom to top in sequence. During the passing process, the absorbent in the main spray pipe 17 is sprayed from top to bottom, so that the absorbent and the flue gas are subjected to carbon dioxide capture treatment in the packing layer 18 to increase the reaction rate, and finally the purified flue gas is discharged from the flue gas outlet 13. After the absorbent in the main spray pipe 17 passes through multiple packing layers 18 from top to bottom, the concentration of the absorbent gradually decreases. At this time, the replenishment pump 22 is turned on. The replenishment pump 22 adds the absorbent in the replenishment tank 21 to the packing layer 18 below the top packing layer 18 through the auxiliary spray pipe 23, which effectively increases the concentration of the absorbent. In addition, the sealing structure 30 can seal the mounting hole 16, so that the auxiliary spray pipe 23 can continue to add absorbent to the packing layer 18 below the top packing layer 18 without stopping the absorption tower 10, and will not interrupt the reaction process, so as to facilitate the continuous operation of the flue gas treatment device and ensure the capture efficiency. Therefore, the technical solution of this embodiment effectively solves the problem that the absorption tower in the related art needs to be shut down to add absorbent, resulting in a low capture efficiency of the flue gas treatment device. In addition, when the absorption tower needs to add absorbent, the sealing structure 30 can be opened and the auxiliary spray pipe 23 can be installed. When the absorption tower is inspected or cleaned, the auxiliary spray pipe 23 can be removed from the absorption tower.

[0030] It should be noted that the “removable” in “the auxiliary spray pipe 23 can be removably passed through the mounting hole 16 ” means that the auxiliary spray pipe 23 can be moved out of the mounting hole 16 or pass through the mounting hole 16 .

[0031] The flue gas treatment device of this embodiment further includes a regeneration tower 51 and a heat exchanger 52 . An inlet of the regeneration tower 51 is connected to the liquid outlet 15 through the heat exchanger 52 , and an outlet of the regeneration tower 51 is connected to the liquid inlet 14 through the heat exchanger 52 .

[0032] like Figure 1 and Figure 2 As shown, in order for the auxiliary spray pipe 23 to spray uniformly around the packing layer 18, the auxiliary spray pipe 23 is swivellable about its axis.

[0033] like Figure 1 and Figure 2 As shown, the flue gas treatment device further includes a motor 41 disposed outside the tower body 11 and a gear transmission structure 42 connected between the motor 41 and the auxiliary spray pipe 23. The gear transmission structure 42 has a simple structure, stable transmission, and is easy to implement.

[0034] like Figure 1 and Figure 2 As shown, in order to facilitate the installation of the auxiliary spray pipe 23 on the tower body 11, there are two mounting holes 16, and the two mounting holes 16 are respectively arranged on two opposite side walls of the tower body 11. The auxiliary spray pipe 23 includes two detachably connected pipe sections, and the two pipe sections can be removably passed through the two mounting holes 16.

[0035] like Figure 1 and Figure 2 As shown, in order to facilitate the detachable connection of the two pipe sections, a threaded hole is provided on one of the two pipe sections, and a threaded section connected to the threaded hole is provided on the other one.

[0036] like Figure 1 and Figure 2 As shown, the sealing structure 30 includes a sealing seat 33, a fluororubber ring 331 disposed on the sealing seat 33, and a pressure ring 34 for fixing the fluororubber ring 331. The sealing seat 33, the fluororubber ring 331, and the pressure ring 34 can all be sleeved on the auxiliary spray pipe 23. The fluororubber ring 331 prevents leakage between the auxiliary spray pipe 23 and the mounting hole 16. In addition, the pressure in the tower body 11 during operation can be maintained to ensure that the absorption process is carried out at the required pressure.

[0037] like Figure 1 and Figure 2 As shown, the sealing structure 30 also includes an elastic member 31 and an adjustment seat 32 disposed on a sealing seat 33, the elastic member 31 is sandwiched between the adjustment seat 32 and the sealing seat 33, a fluororubber ring 331 is disposed on the adjustment seat 32, and both the adjustment seat 32 and the elastic member 31 can be sleeved on the auxiliary spray pipe 23. The setting of the elastic member 31 enables the adjustment seat 32 to float on the sealing seat 33, so that the auxiliary spray pipe 23 can pass through the mounting hole 16.

[0038] like Figure 1 and Figure 2 As shown, the sealing structure 30 also includes a pressing seat 35, an O-shaped sealing ring 332 and a silicone rubber ring 333. The pressing seat 35 can be sleeved on the auxiliary spray pipe 23. The O-shaped sealing ring 332 is located between the outer side of the pressing seat 35 and the sealing seat 33. The O-shaped ring is a very simple and effective sealing element, which can provide a reliable seal between the outer side of the pressing seat 35 and the sealing seat 33. The silicone rubber ring 333 is located between the inner side of the pressing seat 35 and the auxiliary spray pipe 23. The silicone rubber ring 333 has good elasticity, can maintain the sealing effect under pressure changes, and can resist the erosion of ozone and ultraviolet rays, and is suitable for use outdoors or in harsh environments.

[0039] like Figure 1 and Figure 2As shown, the sealing structure 30 also includes a first steel wire retaining ring 334 and a second steel wire retaining ring 335. The first steel wire retaining ring 334 is located between the adjustment seat 32 and the pressing seat 35, and the second steel wire retaining ring 335 is located between the pressing seat 35 and the pressing ring 34. The steel wire retaining ring can assist in fixing the adjustment seat 32 to prevent the adjustment seat 32 from shifting or misaligning under the action of the elastic member 31, thereby ensuring the sealing effect of the fluororubber ring 331 and the silicone rubber ring 333. With the support of the first steel wire retaining ring, the adjustment seat 32 can better contact the pressing seat 35. In addition, the first steel wire retaining ring can reduce the mechanical wear of the silicone rubber ring 333 and the fluororubber ring 331 during installation and operation, thereby extending their service life. The second steel wire retaining ring 335 has the same technical effect as the first steel wire retaining ring 334.

[0040] like Figure 1 and Figure 2 As shown, the sealing structure 30 further includes a sealing cover 36 detachably connected to the sealing seat 33. When the sealing cover 36 is opened, the auxiliary spray pipe 23 passes through the mounting hole 16 and extends into the tower body 11, and the sealing cover 36 seals the gap between the auxiliary spray pipe 23 and the mounting hole 16. When the sealing cover 36 is closed, the auxiliary spray pipe 23 moves out of the mounting hole 16, and the sealing cover 36 blocks the mounting hole 16.

[0041] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0042] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0043] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A flue gas treatment device, characterized in that: include: An absorption tower (10) comprises a tower body (11), a main spray pipe (17) arranged in the tower body (11), and a plurality of packing layers (18) arranged in the tower body (11); the tower body (11) is provided with a smoke inlet (12), a smoke outlet (13), a liquid inlet (14), and a liquid outlet (15); the liquid inlet (14) is located at the top of the tower body (11) and is connected to the main spray pipe (17); the plurality of packing layers (18) are arranged at intervals from top to bottom, and the plurality of packing layers (18) are located between the liquid inlet (14) and the smoke inlet (12); A liquid replenishing device (20), comprising a liquid replenishing tank (21) arranged outside the tower body (11), a liquid replenishing pump (22) connected to the liquid replenishing tank (21), and an auxiliary spraying pipe (23) connected to the liquid replenishing pump (22); a mounting hole (16) is arranged on the side wall of the tower body (11); the mounting hole (16) is located between two adjacent packing layers (18) in the middle, wherein the two adjacent packing layers (18) in the middle are located between the uppermost packing layer (18) and the lowermost packing layer (18); and the auxiliary spraying pipe (23) can be removably passed through the mounting hole (16) and extended into the tower body (11); A sealing structure (30) is openably and closably arranged at the mounting hole (16); when the sealing structure (30) is opened, the auxiliary spray pipe (23) passes through the mounting hole (16) and extends into the tower body (11); the sealing structure (30) seals the gap between the auxiliary spray pipe (23) and the mounting hole (16); when the sealing structure (30) is closed, the auxiliary spray pipe (23) moves out of the mounting hole (16) and the sealing structure (30) blocks the mounting hole (16).

2. The flue gas treatment device according to claim 1, characterized in that: The auxiliary spray pipe (23) is arranged to be swingable around its axis.

3. The flue gas treatment device according to claim 2, characterized in that: The flue gas treatment device further comprises a motor (41) arranged outside the tower body (11) and a gear transmission structure (42) connected between the motor (41) and the auxiliary spray pipe (23).

4. The flue gas treatment device according to claim 1, characterized in that: There are two mounting holes (16), which are respectively arranged on two opposite side walls of the tower body (11); the auxiliary spray pipe (23) comprises two detachably connected pipe sections, and the two pipe sections are respectively removably passed through the two mounting holes (16).

5. The flue gas treatment device according to claim 4, characterized in that: One of the two pipe sections is provided with a threaded hole, and the other pipe section is provided with a threaded section connected with the threaded hole.

6. The flue gas treatment device according to claim 1, characterized in that: The sealing structure (30) comprises a sealing seat (33), a fluororubber ring (331) arranged on the sealing seat (33) and a pressure ring (34) for fixing the fluororubber ring (331); the sealing seat (33), the fluororubber ring (331) and the pressure ring (34) can all be sleeved on the auxiliary spray pipe (23).

7. The flue gas treatment device according to claim 6, characterized in that: The sealing structure (30) further comprises an elastic member (31) and an adjustment seat (32) arranged on the sealing seat (33); the elastic member (31) is sandwiched between the adjustment seat (32) and the sealing seat (33); the fluororubber ring (331) is arranged on the adjustment seat (32); and both the adjustment seat (32) and the elastic member (31) can be sleeved on the auxiliary spray pipe (23).

8. The flue gas treatment device according to claim 7, characterized in that: The sealing structure (30) further comprises a clamping seat (35), an O-ring (332) and a silicone rubber ring (333); the clamping seat (35) can be sleeved on the auxiliary spray pipe (23); the O-ring (332) is located between the outer side of the clamping seat (35) and the sealing seat (33); and the silicone rubber ring (333) is located between the inner side of the clamping seat (35) and the auxiliary spray pipe (23).

9. The flue gas treatment device according to claim 8, characterized in that: The sealing structure (30) further comprises a first steel wire retaining ring (334) and a second steel wire retaining ring (335), wherein the first steel wire retaining ring (334) is located between the adjustment seat (32) and the pressing seat (35), and the second steel wire retaining ring (335) is located between the pressing seat (35) and the pressing ring (34).

10. The flue gas treatment device according to claim 6, characterized in that: The sealing structure (30) further comprises a sealing cover (36) detachably connected to the sealing seat (33).

Images