Boiler flue gas treatment device

Abstract

The utility model relates to the technical field of flue gas treatment devices, and provides a boiler flue gas treatment device which comprises a connecting pipeline used for connecting a boiler and a spray tower, the connecting pipeline is obliquely arranged, and a flue gas pretreatment mechanism is arranged in the connecting pipeline. The flue gas pretreatment mechanism comprises a plurality of filter plates, a plurality of spraying assemblies and a water pump used for supplying water to the spraying assemblies, the filter plates and the spraying assemblies are sequentially arranged and distributed in the linear direction, and the spraying assemblies are located between the adjacent filter plates; the connecting pipeline comprises a pipe body and a plurality of mounting bottom plates, and each mounting bottom plate is detachably connected with the pipe body. According to the technical scheme, the problem that particle deposition at the bottom of the spray tower in the prior art affects the spray cycle work is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of flue gas treatment devices, specifically to a boiler flue gas treatment device. Background Technology

[0002] A boiler is generally a device that uses fuel combustion or other heat sources to heat water or other substances to a certain temperature and pressure. Its main function is to convert chemical energy into thermal energy by burning fuels (such as coal, natural gas, etc.) or using other energy sources (such as electricity, nuclear energy, etc.), thereby producing steam, hot water, or other forms of heat energy from hot water or other working fluids. Currently, most power plants are equipped with boilers, which are used to generate electricity.

[0003] Because boilers generate large amounts of pollutants during operation, such as sulfur oxides and particulate matter, direct release of these pollutants into the atmosphere without treatment can cause serious environmental pollution. Therefore, boilers need to be equipped with flue gas treatment devices such as spray towers.

[0004] However, in actual use, dissolved substances (such as lime, calcium, etc.) in the spray liquid sprayed from the spray tower may react with acidic gases in the chemical gases entering the spray tower, resulting in pollutants in the gas not being completely absorbed or removed. Some pollutants are deposited at the bottom of the tower in the form of particles, affecting the circulation of the spray liquid in the spray tower. Utility Model Content

[0005] This utility model proposes a boiler flue gas treatment device, which solves the problem in related technologies where particulate deposits at the bottom of the spray tower affect the spray circulation operation.

[0006] The technical solution of this utility model is as follows:

[0007] A boiler flue gas treatment device includes a connecting pipe for connecting a boiler and a spray tower. The connecting pipe is inclined and has a flue gas pretreatment mechanism. The flue gas pretreatment mechanism includes several filter plates, several spray components, and a water pump for supplying water to each spray component. The filter plates and spray components are arranged sequentially along a linear direction, and each spray component is located between adjacent filter plates. The connecting pipe includes a pipe body and several mounting base plates, and each mounting base plate is detachably connected to the pipe body.

[0008] Furthermore, the width of the projection surface of each filter plate in the direction of the opening of the connecting pipe is smaller than the width of the projection surface of the connecting pipe in its opening direction, and adjacent filter plates are respectively disposed on the top surface and the bottom surface of the connecting pipe.

[0009] Furthermore, each of the filter plates is detachably connected to the connecting pipe; each of the filter plates passes through the connecting pipe along the length of the projection plane of the connecting pipe in its opening direction, and a first fixing structure for fixing the filter plate is provided between the connecting pipe and each filter plate.

[0010] Furthermore, each of the first fixing structures includes a fixing plate and several fixing components. The fixing plate is integrally formed with the filter plate, and each of the fixing components is threadedly connected to the fixing plate and the pipe body.

[0011] Furthermore, each of the filter plates and the tube body is provided with a second fixing structure for fixing the filter plates; each of the second fixing structures includes a fixing seat, a number of constraint members, and a number of fasteners. The fixing seat and the fixing plate are respectively located on both sides of the filter plate, and the fixing seat is fixedly connected to the tube body. The filter plate and the fixing seat are flush. Each of the constraint members passes through the filter plate and the fixing seat. Each of the fasteners is located at both ends of each constraint member and is threadedly connected to the constraint member. The penetration direction of each constraint member is perpendicular to the fixing direction of the fixing member.

[0012] Furthermore, the tube body is provided with a plurality of mounting grooves for mounting the mounting base plate, and the opening length of the mounting groove is equal to the distance between adjacent filter plates at the same horizontal height.

[0013] Furthermore, a collection pool is provided below the connecting pipe, and the collection pool is connected to the water inlet of the water pump.

[0014] The working principle and beneficial effects of this utility model are as follows:

[0015] This utility model adjusts the connecting pipe between the boiler and the spray tower. The connecting pipe mainly includes a pipe body and several mounting base plates. Each mounting base plate is detachably connected to the pipe body. That is, the base plate of the connecting pipe is a spliced ​​structure and the base plate of the connecting pipe is detachable.

[0016] Meanwhile, a flue gas pretreatment mechanism is installed in the connecting pipe. This invention can pretreat the high-temperature flue gas discharged from the boiler before it enters the spray tower, thereby removing some particulate matter and acidic gases. This not only reduces the burden on the spray tower but also shifts the deposition points of reactive particles, ensuring that most particles remain in the connecting pipe. This reduces the number of reactive particles generated inside the spray tower, or even eliminates the generation of reactive particles altogether. This effectively prevents particle deposition at the bottom of the spray tower from affecting the normal circulation of the spray liquid or extending the maintenance interval for the spray tower (as the number of reactive particles generated decreases, the time required for their deposition to affect the normal circulation of the spray liquid increases), thus ensuring the stable operation of the spray tower or extending the stable operation time of the spray tower.

[0017] Specifically, the flue gas pretreatment mechanism of this invention mainly includes several filter plates, several spray components, and a water pump for supplying water to the spray components. That is, the same spray components are installed in both the connecting pipes and the external spray tower to ensure the treatment effect of the flue gas pretreatment mechanism. Furthermore, each spray component is located between adjacent filter plates. Because the flue gas may contain some larger particles, the filter plates block these large particles, allowing the subsequent spray components to more efficiently remove the gas and the small particles still in the gas, thus improving the overall treatment effect of this invention. Attached Figure Description

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] Figure 1 This is a schematic diagram of the structure of this embodiment;

[0020] Figure 2 This is a side view of the connecting pipe in this embodiment;

[0021] Figure 3 for Figure 2 A sectional view;

[0022] Figure 4 This is a schematic diagram of the filter plate in this embodiment.

[0023] In the picture:

[0024] 1. Connecting pipe; 11. Pipe body; 111. Mounting groove; 12. Mounting base plate; 2. Flue gas pretreatment mechanism; 21. Filter plate; 22. Spray assembly; 23. Water pump; 3. First fixing structure; 31. Fixing plate; 32. Fixing component; 4. Second fixing structure; 41. Fixing seat; 42. Constraint component; 43. Fastener; 5. Collection tank. Detailed Implementation

[0025] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0026] like Figure 1 As shown, this embodiment proposes a boiler flue gas treatment device, which mainly includes a connecting pipe 1 for connecting the boiler and the spray tower. The connecting pipe 1 is equipped with a flue gas pretreatment mechanism 2. That is, this embodiment can pretreat the flue gas from the boiler to the spray tower, thereby reducing the treatment burden of the subsequent spray tower on the flue gas.

[0027] Specifically, the flue gas pretreatment mechanism 2 mainly includes several filter plates 21, several spray components 22, and a water pump 23 for supplying water to each spray component 22. That is, this embodiment, like the external spray tower, also has several spray components 22, and each spray component 22 includes several arrayed spray heads to ensure that the spray range of each spray component 22 can cover the path of the flue gas in this embodiment. In summary, this embodiment, like the external spray tower, uses spraying liquid to complete the flue gas treatment.

[0028] Each filter plate 21 and each spray assembly 22 are arranged sequentially along a linear direction. Each spray assembly 22 is located between adjacent filter plates 21, that is, the filter plates 21 and the spray assemblies 22 are spaced apart from each other. This allows the flue gas to be filtered by the filter plates 21 before being sprayed by the spray assemblies 22. This filtration removes larger particles from the flue gas, so that the spray assemblies 22 mainly treat the flue gas itself and the smaller particles within it. This avoids large particles affecting the water flow from the spray assemblies 22, ensuring the flue gas treatment effect by guaranteeing the smoothness of the spray water flow.

[0029] Meanwhile, since the flue gas undergoes a chemical reaction inside the connecting pipe 1, the reaction particles generated by the chemical reaction will fall inside the connecting pipe 1, thus preventing them from being generated inside the spray tower. This avoids these particles from depositing at the bottom of the spray tower and affecting the stability of the spray cycle.

[0030] In order to clean the particulate matter deposited in connecting pipe 1, such as Figures 2-3 As shown, the connecting pipe 1 in this embodiment mainly includes a pipe body 11 and several mounting base plates 12. Each mounting base plate 12 is detachably connected to the pipe body 11, that is, the base plate of the connecting pipe 1 is a spliced ​​structure. When the connecting pipe 1 needs to be cleaned, the mounting base plate 12 can be directly removed from the pipe body 11 and replaced with a new mounting base plate 12. Because the particles deposited in the connecting pipe 1 are subject to their own adhesion characteristics and the influence of gravity, most of the particles are attached to the base plate (mounting base plate 12) of the connecting pipe 1. Therefore, when the mounting base plate 12 is replaced, the particles attached to the old mounting base plate 12 will be removed from the connecting pipe 1 as it is removed, thereby quickly completing the cleaning work inside the connecting pipe 1. Then, the particles attached to the old mounting base plate 12 are cleaned.

[0031] In the preferred embodiment, each mounting base plate 12 is fixed to the pipe body 11 by means of bolt thread connection, which not only ensures the reliability of the connection between the two, but also facilitates the disassembly of each mounting base plate 12.

[0032] Furthermore, due to the slope of the conventionally inclined connecting pipe 1, the spray liquid in the connecting pipe 1 will flow with its tilt direction to complete the discharge of the spray liquid. Preferably, the horizontal height of the end of the connecting pipe 1 that is close to the spray tower is lower than the horizontal height of the end of the connecting pipe 1 that is close to the boiler, so that this embodiment does not need to design an additional liquid treatment mechanism, and the sprayed liquid can be directly discharged to the spray tower.

[0033] Each mounting base plate 12 and the pipe body 11 should be provided with a sealing strip made of rubber or other sealing elastic material to ensure the sealing performance of the overall structure of the connecting pipe 1.

[0034] If necessary, it can also be as follows Figure 1 As shown, a collection tank 5 is provided below the connecting pipe 1. The collection tank 5 is used to collect the spray liquid that seeps out from the connecting pipe 1. The collection tank 5 is connected to the inlet of the water pump 23, so that the recovered spray liquid can be circulated under the action of the water pump 23, avoiding waste of the seeping spray liquid. The collection tank 5 also has a storage function. By ensuring the amount of spray liquid in the collection tank 5, each spray component 22 can be guaranteed to have sufficient spray liquid for spraying.

[0035] In this embodiment, the water pump 23 is preferably a high-efficiency water pump or other pumping device that can pump water to a higher position, so as to ensure that the spray liquid in the collection tank 5 can be transported to each spraying component 22 under the action of the water pump 23 to complete the spraying work.

[0036] like Figures 2-3 As shown, in this embodiment, the width of the projection surface of each filter plate 21 in the direction of the opening of the connecting pipe 1 is smaller than the width of the projection surface of the connecting pipe 1 in its opening direction. That is, the filter plate 21 does not completely cover the internal channel structure of the connecting pipe 1 in the direction of the opening of the connecting pipe 1. By designing adjacent filter plates 21 respectively on the top and bottom surfaces of the connecting pipe 1, multiple bends can exist inside the connecting pipe 1, and the internal structure of the connecting pipe 1 can present a serpentine (S-shaped) structure. The S-shaped channel design can help guide the flow of flue gas, reduce turbulence in the airflow, and make the flue gas flow more stable. When the flue gas passes through the curved path, the flow velocity may change to some extent, but it can avoid the airflow turbulence or unevenness that may occur in the straight channel, and enhance the stability of the flue gas flow.

[0037] Considering that the filter plate 21 in this embodiment is used to filter large particles in flue gas, these large particles adhere to the filter plate 21 after being filtered by the filter plate 21 due to the humid environment inside the connecting pipe 1, gradually affecting the filtration performance of the filter plate 21. In order to facilitate the cleaning of the filter plate 21, each filter plate 21 can be detached and connected to the connecting pipe 1.

[0038] Specifically, each filter plate 21 extends through the connecting pipe 1 along the length of its projection plane in the opening direction, that is, each filter plate 21 extends through both sides of the connecting pipe 1. The connecting pipe 1 (pipe body 11) should have corresponding through grooves for the filter plates 21 to pass through. In this way, by means of the friction between the filter plates 21 and the pipe body 11 when each filter plate 21 is pulled out from the pipe body 11, most of the dirt attached to the filter plates 21 is effectively removed, effectively improving the cleaning efficiency of the filter plates 21.

[0039] like Figures 2-4 As shown, in this embodiment, to ensure that each filter plate 21 can be fixed on the connecting pipe 1, a first fixing structure 3 for fixing the filter plate 21 is provided between the connecting pipe 1 and each filter plate 21. Specifically, each first fixing structure 3 in this embodiment includes a fixing plate 31 and several fixing parts 32. The fixing plate 31 is integrally formed with the filter plate 21 to ensure the connection strength between the two. After the filter plate 21 is moved to the designated position, the fixing plate 31 will abut against the pipe body 11. Each fixing part 32 is threadedly connected to the fixing plate 31 and the pipe body 11, thereby realizing the fixing of the filter plate 21.

[0040] In this embodiment, bolts are preferred for all fixing components 32, which ensures both the connection strength between the filter plate 21 and the pipe body 11 and the ease of disassembling the filter plate 21.

[0041] Meanwhile, to further enhance the installation stability of each filter plate 21 on the pipe body 11, a second fixing structure 4 for fixing the filter plate 21 is also provided between each filter plate 21 and the pipe body 11. Specifically, each second fixing structure 4 includes a fixing seat 41, several constraint members 42, and several fasteners 43. The fixing seat 41 and the fixing plate 31 are respectively located on both sides of the filter plate 21, that is, the first fixing structure 3 and the second fixing structure 4 are respectively located on both sides of the filter plate 21, so that there are fixing points on both sides of the filter plate 21 on the pipe body 11, thereby effectively ensuring the installation strength and stability of the filter plate 21.

[0042] The fixing seat 41 is fixedly connected to the tube body 11, and the through groove on the tube body 11 for the filter plate 21 to pass through extends to the fixing seat 41, so that the end of the filter plate 21, which is fixed by the first fixing structure 3, close to the fixing seat 41 can be flush with the fixing seat 41 for subsequent fixing work. In detail, each constraint member 42 passes through the filter plate 21 and the fixing seat 41. Both the fixing seat 41 and the filter plate 21 should be provided with limiting holes for the constraint members 42 to pass through. After the constraint members 42, the fixing seat 41 and the filter plate 21 cooperate with each other, they play the role of restricting the degree of freedom of the filter plate 21. Each fastener 43 is located at both ends of each constraint 42 and is threadedly connected to the constraint 42. When each fastener 43 is rotated to a certain angle, it can abut against the fixing seat 41, thereby restricting the movement of the constraint 42 in the axial direction of the limiting hole. The through direction of each constraint 42 is perpendicular to the fixing direction of the fixing member 32, so that the first fixing structure 3 and the second fixing structure 4 can apply fixing force to the filter plate 21 in different directions, thereby effectively improving the fixing effect.

[0043] The pipe body 11 is provided with a plurality of mounting grooves 111 for mounting the mounting base plate 12. The opening length of the mounting groove 111 is equal to the distance between the adjacent filter plates 21 at the same horizontal height. That is, the bottom of the pipe body 11 is provided with a support beam for supporting the filter plates 21 located at the bottom of the pipe body 11, so as to ensure the connection strength between the filter plates 21 located at the bottom of the pipe body 11 and the pipe body 11.

[0044] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A boiler flue gas treatment device, comprising a connecting pipe (1) for connecting a boiler and a spray tower, wherein the connecting pipe (1) is inclined, characterized in that, The connecting pipe (1) is provided with a flue gas pretreatment mechanism (2), which includes a number of filter plates (21), a number of spray components (22), and a water pump (23) for supplying water to each spray component (22). Each filter plate (21) and each spray component (22) are arranged sequentially along a linear direction, and each spray component (22) is located between adjacent filter plates (21). The connecting pipe (1) includes a pipe body (11) and several mounting base plates (12), each of which is detachably connected to the pipe body (11).

2. The boiler flue gas treatment device according to claim 1, characterized in that, The width of the projection surface of each filter plate (21) in the opening direction of the connecting pipe (1) is smaller than the width of the projection surface of the connecting pipe (1) in its opening direction. Adjacent filter plates (21) are respectively disposed on the top surface and the bottom surface of the connecting pipe (1).

3. The boiler flue gas treatment device according to claim 1 or 2, characterized in that, Each of the filter plates (21) can be detachably connected to the connecting pipe (1); Each of the filter plates (21) extends through the connecting pipe (1) along the length of the projection plane of the connecting pipe (1) in its opening direction. A first fixing structure (3) for fixing the filter plate (21) is provided between the connecting pipe (1) and each filter plate (21).

4. The boiler flue gas treatment device according to claim 3, characterized in that, Each of the first fixing structures (3) includes a fixing plate (31) and several fixing parts (32). The fixing plate (31) and the filter plate (21) are integrally formed. Each of the fixing parts (32) is threadedly connected to the fixing plate (31) and the pipe body (11).

5. The boiler flue gas treatment device according to claim 4, characterized in that, Each of the filter plates (21) and the tube body (11) is provided with a second fixing structure (4) for fixing the filter plate (21); Each of the second fixing structures (4) includes a fixing seat (41), a number of constraint members (42), and a number of fasteners (43). The fixing seat (41) and the fixing plate (31) are respectively located on both sides of the filter plate (21), and the fixing seat (41) is fixedly connected to the pipe body (11). The filter plate (21) and the fixing seat (41) are flush. Each of the constraint members (42) passes through the filter plate (21) and the fixing seat (41). Each of the fasteners (43) is located at both ends of each constraint member (42) and is threadedly connected to the constraint member (42). The penetration direction of each constraint member (42) is perpendicular to the fixing direction of the fixing member (32).

6. The boiler flue gas treatment device according to claim 1 or 2, characterized in that, The tube body (11) is provided with a plurality of mounting grooves (111) for mounting the mounting base plate (12), and the opening length of the mounting groove (111) is equal to the distance between adjacent filter plates (21) at the same horizontal height.

7. The boiler flue gas treatment device according to claim 1, characterized in that, A collection pool (5) is provided below the connecting pipe (1), and the collection pool (5) is connected to the inlet of the water pump (23).

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