Ash removal and desulfurization treatment equipment for thermal power plant

Abstract

The invention provides thermal power plant ash removal and desulfurization treatment equipment, and relates to the technical field of thermal power plant flue gas treatment, the thermal power plant ash removal and desulfurization treatment equipment comprises a treatment box, a dust removal device, a desulfurization liquid storage box and a liquid collection tank, the treatment box is provided with a dust removal chamber, a spraying chamber and an ascending chamber which are communicated in sequence, the treatment box is provided with a smoke inlet and a smoke outlet, and the smoke inlet is communicated with the dust removal chamber; the end, away from the dust removal chamber, of the smoke inlet is suitable for being connected with a smoke exhaust pipeline of a thermal power plant. The dust removal device is arranged in the dust removal chamber to remove dust in flue gas, the desulfurization liquid storage tank and the liquid collection tank are both installed on the treatment box, the desulfurization liquid storage tank is located above the spraying chamber and communicates with the spraying chamber to spray desulfurization liquid to the spraying chamber, and the liquid collection tank is located below the spraying chamber and the rising chamber; and the top end of the liquid collecting tank is open and is communicated with the spraying chamber and the rising chamber. The dust removal and desulfurization functions are integrated, the flue gas conveying resistance and energy consumption are reduced, and the occupied space is small.

Description

Technical Field

[0001] This invention relates to the field of flue gas treatment technology for thermal power plants, and in particular to a desulfurization and ash removal equipment for thermal power plants. Background Technology

[0002] During the power generation process of thermal power plants, the combustion of coal produces a large amount of dust- and sulfur-containing flue gas. If the flue gas is directly emitted, it will cause serious pollution to the atmospheric environment. At the same time, the accumulation of dust can also easily affect the normal operation of subsequent equipment. Therefore, the desulphurization and ash removal treatment of flue gas is the core link for thermal power plants to meet environmental protection standards and operate safely.

[0003] In related technologies, the ash removal and desulfurization treatment system of thermal power plants usually adopts a "segmented" design, that is, the ash removal and desulfurization functions are implemented by independent equipment. In this case, the dust-laden flue gas must first pass through a special dust removal device to remove dust, and then be introduced into the desulfurization tower through a conveying pipeline for desulfurization treatment. The whole process increases the resistance of the flue gas during the transportation process, resulting in a significant increase in energy consumption. At the same time, it occupies a large space and is difficult to match the application requirements of the limited space of thermal power plants. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, embodiments of the present invention propose an ash removal and desulfurization treatment device for thermal power plants. This device integrates ash removal and desulfurization functions, reduces flue gas transport resistance and energy consumption, and occupies little space.

[0006] According to an embodiment of the present invention, a desulfurization and ash removal treatment device for a thermal power plant includes a treatment box, a dust removal device, a desulfurization liquid storage tank, and a collection tank. The treatment box has a dust removal chamber, a spray chamber, and a rising chamber connected in sequence. The treatment box is provided with a flue gas inlet and a flue gas outlet. The flue gas inlet is connected to the dust removal chamber, and the end of the flue gas inlet away from the dust removal chamber is adapted to be connected to the flue gas exhaust pipe of the thermal power plant. The flue gas outlet is connected to the rising chamber. The dust removal device is located in the dust removal chamber to remove dust from the flue gas. The desulfurization liquid storage tank and the collection tank are both installed in the treatment box. The desulfurization liquid storage tank is located above the spray chamber and is connected to the spray chamber to spray desulfurization liquid into the spray chamber. The collection tank is located below each of the spray chamber and the rising chamber, and the top of the collection tank is open and is connected to both the spray chamber and the rising chamber.

[0007] According to an embodiment of the present invention, in a thermal power plant ash removal and desulfurization treatment equipment, after sulfur-containing flue gas enters the dust removal chamber through the flue gas inlet, the dust removal device can remove dust from the flue gas. Then, the flue gas continues to enter the desulfurization chamber, where a desulfurization liquid storage tank sprays desulfurization liquid into the chamber. The desulfurization liquid captures sulfur dioxide in the flue gas, achieving desulfurization and purification of the flue gas. The waste liquid generated during desulfurization, as well as the waste liquid carried by the desulfurized flue gas as it is discharged through the rising chamber, can all be automatically collected into a collection tank under gravity, thus completing the ash removal and desulfurization treatment of the sulfur-containing flue gas. The dust removal device, desulfurization liquid storage tank, and collection tank are all integrated into the treatment box, enabling the equipment to simultaneously perform ash removal and desulfurization functions, while reducing the overall size of the equipment and improving its applicability within the limited space of a thermal power plant. Therefore, compared to related technologies, the present invention integrates ash removal and desulfurization functions, reduces flue gas transport resistance and energy consumption, and occupies less space.

[0008] In some embodiments, the dust removal chamber and the rising chamber both extend in the vertical direction, and the dust removal chamber, the spray chamber and the rising chamber are arranged in a U-shape. The smoke inlet is located near the top of the dust removal chamber, and the smoke outlet is located near the top of the rising chamber.

[0009] In some embodiments, the dust removal chamber extends in a vertical direction, and the dust removal device is at least one and arranged at intervals in the vertical direction for multi-stage dust removal of flue gas.

[0010] In some embodiments, the dust removal device is detachably connected to the processing box.

[0011] In some embodiments, the dust removal device includes a mounting frame, a dust removal frame, a filter cloth, and an elastic member. The mounting frame is slidably connected to the processing box along a first direction, which is orthogonal to the vertical direction. The dust removal frame is disposed within the mounting frame, and the filter cloth is fitted within the dust removal frame to filter and remove dust from the flue gas. The mounting frame has a first position and a second position. In the first position, the mounting frame is completely located within the dust removal chamber, and at least a portion of the mounting frame is located outside the processing box in the second position. The elastic member connects the mounting frame and the processing box and is capable of pressing the mounting frame toward the first position.

[0012] In some embodiments, the desulfurization liquid storage tank includes a tank body, an atomizing nozzle, and a pressurizing component. The tank body is connected to the processing tank and has a first receiving cavity for containing the desulfurization liquid. The atomizing nozzle is located at the bottom of the tank body and communicates with the first receiving cavity. The atomizing nozzle is capable of spraying the desulfurization liquid into the spray chamber. The pressurizing component is installed on the tank body and is used to pressurize the desulfurization liquid in the first receiving cavity.

[0013] In some embodiments, the processing device further includes a first air guide plate and a second air guide plate, both of which are disposed in the spray chamber. One of the first air guide plate and the second air guide plate is connected to the top surface of the spray chamber, and the other is connected to the bottom surface of the spray chamber. The spray chamber, the first air guide plate, and the second air guide plate together define a flue gas flow channel. The first air guide plate and the second air guide plate are both at least one and are arranged at intervals along the extension direction of the spray chamber, which is orthogonal to the vertical direction. The first air guide plate and the second air guide plate are spaced apart and alternately arranged along the extension direction of the spray chamber.

[0014] In some embodiments, the processing equipment further includes a filtration device disposed outside the processing chamber. The filtration device includes a filter cylinder and a filter body. The filter cylinder has a second receiving cavity and is provided with an air inlet and an exhaust outlet communicating with the second receiving cavity. The air inlet is communicating with the first smoke outlet. The filter body is disposed in the second receiving cavity and includes a filter frame and an activated carbon filter layer. The filter frame is detachably connected to the filter cylinder, and the activated carbon filter layer is fitted inside the filter frame to perform secondary dust removal on the flue gas.

[0015] In some embodiments, the second receiving cavity extends in a vertical direction, and the filter body is at least one and arranged at intervals in the vertical direction for multi-stage secondary dust removal of flue gas.

[0016] In some embodiments, the filtration device further includes an air intake element, the air intake of which is connected to the exhaust port, and the air outlet of which is connected to the external environment.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a thermal power plant ash removal and desulfurization treatment equipment according to an embodiment of the present invention.

[0019] Figure 2 This is a cross-sectional structural schematic diagram of a thermal power plant ash removal and desulfurization treatment equipment according to an embodiment of the present invention (the filtration device is not shown in the figure).

[0020] Figure 3 This is an exploded structural diagram of the dust removal device in the desulfurization and ash removal equipment of a thermal power plant according to an embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the structure of the filter body in the ash removal and desulfurization treatment equipment of a thermal power plant according to an embodiment of the present invention.

[0022] Figure label: 1. Processing box; 11. Dust removal chamber; 12. Spray chamber; 13. Ascension chamber; 14. Smoke inlet; 15. Smoke outlet; 2. Dust removal device; 21. Mounting frame; 22. Dust removal frame; 23. Filter cloth; 24. Elastic component; 3. Desulfurization liquid storage tank; 31. Tank body; 311. First receiving cavity; 32. Atomizing nozzle; 33. Pressurizing component; 4. Liquid collection tank; 5. First air guide plate; 6. Second air guide plate; 7. Filter device; 71. Filter cylinder; 711. Air inlet; 712. Exhaust outlet; 72. Filter body; 721. Filter frame; 722. Activated carbon filter layer; 73. Air intake component. Detailed Implementation

[0023] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0024] like Figure 1 and Figure 2 As shown in the figure, an embodiment of the present invention provides a desulfurization and ash removal equipment for a thermal power plant, comprising a treatment tank 1, a dust removal device 2, a desulfurization liquid storage tank 3, and a collection tank 4. The treatment tank 1 has a dust removal chamber 11, a spray chamber 12, and a rising chamber 13 connected in sequence. The treatment tank 1 is provided with a flue gas inlet 14 and a flue gas outlet 15. The flue gas inlet 14 is connected to the dust removal chamber 11, and the end of the flue gas inlet 14 facing away from the dust removal chamber 11 is adapted to be connected to the flue gas exhaust pipe of the thermal power plant. The flue gas outlet 15 is connected to the rising chamber 13. The dust removal device 2 is provided in the dust removal chamber 11 to remove dust from the flue gas. The desulfurization liquid storage tank 3 and the collection tank 4 are both installed in the treatment tank 1. The desulfurization liquid storage tank 3 is located above the spray chamber 12 and is connected to the spray chamber 12 to spray desulfurization liquid onto the spray chamber 12. The collection tank 4 is located below each of the spray chamber 12 and the rising chamber 13. The top of the collection tank 4 is open and is connected to both the spray chamber 12 and the rising chamber 13.

[0025] According to the embodiment of the present invention, in the desulfurization and ash removal equipment for thermal power plants, after the sulfur-containing flue gas enters the dust removal chamber 11 through the flue gas inlet 14, the dust removal device 2 can remove the dust in the flue gas. Then, the flue gas continues to enter the desulfurization chamber, and the desulfurization liquid storage tank 3 sprays desulfurization liquid into the desulfurization chamber. The desulfurization liquid captures the sulfur dioxide in the flue gas, thereby achieving desulfurization and purification of the flue gas. The waste liquid generated during desulfurization, as well as the waste liquid carried by the desulfurized flue gas when it is discharged outward through the rising chamber 13, can be automatically collected into the collection tank 4 under the action of gravity, thereby completing the desulfurization and ash removal treatment of the sulfur-containing flue gas. The dust removal device 2, the desulfurization liquid storage tank 3, and the collection tank 4 are all integrated on the treatment box 1, so that the treatment equipment not only has the functions of desulfurization and ash removal at the same time, but also reduces the volume of the entire treatment equipment and improves the applicability of the treatment equipment in the limited space of the thermal power plant. Therefore, compared with related technologies, the present invention integrates the functions of desulfurization and ash removal, reduces the resistance and energy consumption of flue gas transportation, and occupies less space.

[0026] Understandably, placing the desulfurization liquid storage tank above the spray chamber and the collection tank below each of the spray chamber and the rising chamber can improve the integration of this part and reduce space occupation. At the same time, the waste liquid generated in the spray chamber during desulfurization, as well as the waste liquid or condensed waste liquid carried by the desulfurization flue gas discharged from the rising chamber, can fall into the collection tank under gravity, so as to facilitate the centralized treatment of waste liquid in the later stage. This reduces the energy consumption required to treat sulfur-containing flue gas to a certain extent and saves costs.

[0027] Specifically, the collection tank can be directly formed inside the treatment tank, or it can be detachably connected to the treatment tank. When the collection tank is formed inside the treatment tank, a drain port connected to the collection tank can be opened on the treatment tank to discharge waste liquid later. When the collection tank is detachably connected to the treatment tank, the collection tank can be removed from the treatment tank and the waste liquid can be poured out when the waste liquid in the collection tank reaches a set amount. The desulfurization liquid in the desulfurization liquid storage tank is not limited to inorganic desulfurization liquid (such as lime / limestone slurry, sodium hydroxide solution, etc.), ammonia-based desulfurization liquid (based on ammonia water or ammonium bicarbonate, such as ammonium sulfate), organic amine desulfurization liquid (such as ethanolamine, methyl diethanolamine solution), or compound desulfurization liquid.

[0028] like Figure 2 As shown, in some embodiments, the dust removal chamber 11 and the rising chamber 13 both extend in the vertical direction. The dust removal chamber 11, the spray chamber 12 and the rising chamber 13 are arranged in a U-shape. The smoke inlet 14 is arranged near the top of the dust removal chamber 11 and the smoke outlet 15 is arranged near the top of the rising chamber 13.

[0029] Understandably, the above structural design can further improve the integration of the treatment equipment and reduce the overall volume. The sulfur-containing flue gas flows from top to bottom in the dust removal chamber, flows horizontally in the spray chamber, and finally is discharged from the rising chamber through the flue gas outlet in the upward direction. Compared with related technologies, the length of the flue gas conveying pipeline in the dust removal and desulfurization process is shortened, which can reduce the conveying resistance and energy consumption.

[0030] Specifically, the spray chamber can extend horizontally. The two ends of the spray chamber are open in the horizontal direction and are respectively connected to the bottom of the dust removal chamber and the bottom of the rising chamber.

[0031] like Figure 1 and Figure 2 As shown, in some embodiments, the dust removal chamber 11 extends in the vertical direction, and the dust removal device 2 is at least one and arranged at intervals in the vertical direction to perform multi-stage dust removal on the flue gas, thereby further improving the dust removal effect on sulfur-containing flue gas and optimizing the dust removal performance of the treatment equipment.

[0032] like Figure 1 and Figure 2 As shown, in some embodiments, the dust removal device 2 is detachably connected to the processing box 1.

[0033] Understandably, detachably connecting the dust collector to the treatment box facilitates the disassembly and assembly of the dust collector, and allows for the replacement of only the affected component if either the dust collector or the treatment box is damaged, thus ensuring the lifespan of both and saving costs.

[0034] For example, as shown in the figure, there are three dust removal devices, all of which can be detached from the side of the processing box and installed into the dust removal chamber.

[0035] like Figures 1 to 3 As shown, in some embodiments, the dust removal device 2 includes a mounting frame 21, a dust removal frame 22, a filter cloth 23, and an elastic member 24. The mounting frame 21 is slidably connected to the processing box 1 along a first direction, which is orthogonal to the vertical direction. The dust removal frame 22 is disposed inside the mounting frame 21, and the filter cloth 23 is fitted inside the dust removal frame 22 to filter and remove dust from the flue gas. The mounting frame 21 has a first position and a second position. In the first position, the mounting frame 21 is completely located in the dust removal chamber 11, and at least a portion of the mounting frame 21 is located outside the processing box 1 in the second position. The elastic member 24 connects the mounting frame 21 and the processing box 1 and can press the mounting frame 21 toward the first position.

[0036] It is understandable that after the sulfur-containing flue gas enters the dust removal chamber, it flows from top to bottom and is filtered through the filter cloth of the dust removal device to capture the dust in the sulfur-containing flue gas, thus achieving the dust removal treatment of the sulfur-containing flue gas. The elastic component between the mounting frame and the treatment box is conducive to the reset of the dust removal device after maintenance.

[0037] Specifically, the elastic element is not limited to a return spring. One end of the elastic element can be connected to the mounting frame, and the other end can be connected to the processing box.

[0038] like Figure 1 and Figure 2 As shown, in some embodiments, the desulfurization liquid storage tank 3 includes a tank body 31, an atomizing nozzle 32, and a pressurizing component 33. The tank body 31 is connected to the treatment tank 1 and has a first receiving cavity 311 for containing the desulfurization liquid. The atomizing nozzle 32 is located at the bottom of the tank body 31 and communicates with the first receiving cavity 311. The atomizing nozzle 32 can spray the desulfurization liquid into the spray chamber 12. The pressurizing component 33 is installed on the tank body 31 and is used to pressurize the desulfurization liquid in the first receiving cavity 311. The pressurizing component is not limited to a pressurizing pump.

[0039] Understandably, since the desulfurization liquid storage tank is located above the spray chamber, and the atomizing nozzle is located at the bottom of the desulfurization tank and connected to the first receiving cavity of the tank, the desulfurization liquid in the first receiving cavity can automatically enter the atomizing nozzle under the action of gravity, and be sprayed from the atomizing nozzle to the spray chamber, so that the spray liquid and the flue gas in the spray chamber are mixed evenly, thereby improving the desulfurization effect. The pressurizing component can pressurize the desulfurization liquid, so that the desulfurization liquid can be sprayed out smoothly, and at the same time further improve the mixing effect of the spray liquid and the flue gas.

[0040] like Figure 2 As shown, in some embodiments, the processing device further includes a first air guide plate 5 and a second air guide plate 6. Both the first air guide plate 5 and the second air guide plate 6 are disposed in the spray chamber 12. One of the first air guide plate 5 and the second air guide plate 6 is connected to the top surface of the spray chamber 12, and the other is connected to the bottom surface of the spray chamber 12. The spray chamber 12, the first air guide plate 5 and the second air guide plate 6 together define a flue gas flow channel.

[0041] The first air guide plate 5 and the second air guide plate 6 are both at least one and are arranged at intervals along the extension direction of the spray chamber 12. The extension direction of the spray chamber 12 is orthogonal to the vertical direction. The first air guide plate 5 and the second air guide plate 6 are spaced apart and alternately arranged along the extension direction of the spray chamber 12. In other words, at least one first air guide plate and at least one second air guide plate form a grating-like structure in the spray chamber.

[0042] It is understandable that the combination of the first and second air guide plates can form an "S" shaped flue gas flow channel in the spray chamber, which prolongs the desulfurization time of the flue gas in the spray chamber, that is, it can increase the reaction time between the flue gas and the desulfurization liquid to ensure the desulfurization effect. At the same time, the aforementioned layout structure can not only meet the desulfurization requirements, but also reduce the volume of the treatment equipment and occupy a small area.

[0043] Specifically, the top end of the first air guide plate can be connected to the top surface of the spray chamber, and the bottom end of the second air guide plate can be connected to the bottom surface of the spray chamber. In this case, the bottom end of the first air guide plate is spaced apart from the bottom surface of the spray chamber, and the top end of the second air guide plate is spaced apart from the top surface of the spray chamber. Furthermore, the bottom end of the first air guide plate and the top end of the second air guide plate are spaced apart in the extending direction of the spray chamber. The extending direction of the spray chamber can be the left-right direction shown in the figure.

[0044] In addition, there can be multiple atomizing nozzles arranged at intervals in the spray chamber. The atomizing nozzles can be located in the gap between the first air guide plate and the second air guide plate. In other words, the atomizing nozzles are connected to the flue gas flow channel, and the spray position of the atomizing nozzles does not interfere with the first air guide plate and the second air guide plate.

[0045] Furthermore, the outer wall of each of the first and second air guide plates may be provided with an anti-corrosion coating, or both the first and second air guide plates may be corrosion-resistant plates, in order to ensure the service life of the first and second air guide plates.

[0046] like Figure 1 As shown, in some embodiments, the processing equipment further includes a filter device 7, which is located outside the processing box 1. The filter device 7 includes a filter cylinder 71 and a filter body 72. The filter cylinder 71 has a second receiving cavity (not shown in the figure) and is provided with an air inlet 711 and an exhaust port 712 communicating with the second receiving cavity. The air inlet 711 is connected to the first smoke outlet 15. The filter body 72 is located in the second receiving cavity and includes a filter frame 721 and an activated carbon filter layer 722. The filter frame 721 is detachably connected to the filter cylinder 71, and the activated carbon filter layer 722 is fitted inside the filter frame 721 to perform secondary dust removal on the flue gas.

[0047] Understandably, the flue gas after desulfurization can continue to enter the filtration device for secondary dust removal to further improve the purification effect of the treatment equipment on sulfur-containing flue gas. Among them, the activated carbon filter layer has the advantages of strong adsorption capacity and recyclability, so it can effectively remove a variety of pollutants in the flue gas and has a good purification effect.

[0048] In addition, the filter frame and filter cartridge are detachably connected, which facilitates the disassembly and assembly of the filter frame. At the same time, if one of the filter frame and filter cartridge is damaged, only the corresponding one needs to be replaced, so as to ensure the service life of both.

[0049] Therefore, this treatment equipment has primary ash removal, desulfurization and secondary ash removal functions, and has a good purification effect on sulfur-containing flue gas.

[0050] Specifically, the air inlet can be connected to the first smoke outlet via a delivery pipe.

[0051] like Figure 1As shown, in some embodiments, the second receiving cavity extends in the vertical direction, and the filter body 72 is at least one and arranged at intervals in the vertical direction to perform multi-stage secondary dust removal on the flue gas, thereby further optimizing the purification and dust removal effect of the treatment equipment on the flue gas and improving the overall performance of the treatment equipment.

[0052] For example, as shown in the figure, there are two filter bodies that can be disassembled and installed inside the filter cartridge.

[0053] like Figure 1 As shown, in some embodiments, the filter device 7 further includes an exhaust fan 73. The air inlet of the exhaust fan 73 is connected to the exhaust port 712, and the air outlet of the exhaust fan 73 is connected to the external environment. The exhaust fan generates negative pressure to draw in the gas after secondary dust removal, effectively overcoming pipeline resistance, guiding the gas after secondary dust removal to flow and discharge it outward, and maintaining the working pressure of the processing equipment. The exhaust fan is not limited to an exhaust fan.

[0054] The working process of the ash removal and desulfurization equipment in this thermal power plant will now be described, taking into account its specific structure: 1) Sulfur-containing flue gas enters the dust removal chamber through the flue gas inlet, flows from top to bottom and is filtered sequentially by the filter cloths of multiple dust removal devices to achieve one-time ash removal of the sulfur-containing flue gas; 2) After that, the flue gas continues to enter the desulfurization chamber. The pressurizing component pressurizes the desulfurization liquid, causing the desulfurization liquid to be sprayed into the desulfurization chamber from the atomizing nozzle. The spray liquid is evenly mixed with the flue gas to desulfurize the flue gas. The first air guide plate and the second air guide plate cooperate to form an "S" shaped flue gas flow channel in the desulfurization chamber, which can prolong the desulfurization time of the flue gas in the spray chamber, that is, increase the reaction time between the flue gas and the desulfurization liquid, thus ensuring the desulfurization effect. 3) Furthermore, the flue gas after desulfurization flows upward along the rising chamber. At the same time, the waste liquid generated in the spray chamber during desulfurization, as well as the waste liquid or condensed waste liquid carried by the desulfurization flue gas discharged from inside and outside the rising chamber, can fall into the collection tank under the action of gravity, so as to facilitate the centralized treatment of waste liquid in the later stage. 4) Finally, the flue gas enters the second receiving chamber of the filter device, flows from top to bottom and is filtered and adsorbed by the activated carbon filter layer of multiple filter bodies to achieve secondary dust removal of the flue gas. During this process, the exhaust fan can generate negative pressure to draw in the gas after secondary dust removal, effectively overcome the pipeline resistance, guide the gas after secondary dust removal to flow and discharge it outward, and maintain the working pressure of the treatment equipment.

[0055] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0056] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0057] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0058] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0059] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0060] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A desulfurization and ash removal treatment device for thermal power plants, characterized in that, include: The treatment box has a dust removal chamber, a spray chamber and an ascent chamber connected in sequence. The treatment box is provided with a smoke inlet and a smoke outlet. The smoke inlet is connected to the dust removal chamber. The end of the smoke inlet away from the dust removal chamber is adapted to be connected to the exhaust pipe of the thermal power plant. The smoke outlet is connected to the ascent chamber. A dust removal device is provided in the dust removal chamber to remove dust from the flue gas; The desulfurization liquid storage tank and the collection tank are both installed in the treatment tank. The desulfurization liquid storage tank is located above the spray chamber and communicates with the spray chamber to spray desulfurization liquid into the spray chamber. The collection tank is located below each of the spray chamber and the rising chamber. The top of the collection tank is open and communicates with both the spray chamber and the rising chamber.

2. The ash removal and desulfurization treatment equipment for thermal power plants according to claim 1, characterized in that, Both the dust removal chamber and the rising chamber extend vertically. The dust removal chamber, the spray chamber, and the rising chamber are arranged in a U-shape. The smoke inlet is located near the top of the dust removal chamber, and the smoke outlet is located near the top of the rising chamber.

3. The ash removal and desulfurization treatment equipment for thermal power plants according to claim 1, characterized in that, The dust removal chamber extends vertically, and the dust removal device is at least one and arranged at intervals along the vertical direction for multi-stage dust removal of flue gas.

4. The ash removal and desulfurization treatment equipment for thermal power plants according to claim 1, characterized in that, The dust removal device is detachably connected to the processing box.

5. The ash removal and desulfurization treatment equipment for thermal power plants according to claim 4, characterized in that, The dust removal device includes: The installation frame, dust removal frame, and filter cloth are provided. The installation frame is slidably connected to the treatment box along a first direction, which is orthogonal to the vertical direction. The dust removal frame is disposed within the installation frame, and the filter cloth is fitted within the dust removal frame to filter and remove dust from the flue gas. The elastic element has a first position and a second position, wherein the mounting frame is completely located in the dust removal chamber in the first position, and at least a portion of the mounting frame is located outside the processing box in the second position. The elastic element connects the mounting frame and the processing box and is capable of pressing the mounting frame toward the first position.

6. The ash removal and desulfurization treatment equipment for thermal power plants according to claim 1, characterized in that, The desulfurization liquid storage tank includes: The enclosure and the atomizing nozzle are provided. The enclosure is connected to the treatment box and has a first receiving cavity for containing desulfurization liquid. The atomizing nozzle is located at the bottom of the enclosure and communicates with the first receiving cavity. The atomizing nozzle can spray desulfurization liquid into the spray chamber. A pressurizing component is installed on the housing and is used to pressurize the desulfurization liquid in the first accommodating cavity.

7. The ash removal and desulfurization treatment equipment for thermal power plants according to claim 1, characterized in that, It also includes a first air guide plate and a second air guide plate, both of which are disposed in the spray chamber. One of the first air guide plate and the second air guide plate is connected to the top surface of the spray chamber, and the other is connected to the bottom surface of the spray chamber. The spray chamber, the first air guide plate and the second air guide plate together define a flue gas flow channel. The first air guide plate and the second air guide plate are both at least one and are arranged at intervals along the extension direction of the spray chamber, which is orthogonal to the vertical direction. The first air guide plate and the second air guide plate are spaced apart and alternately arranged along the extension direction of the spray chamber.

8. The ash removal and desulfurization treatment equipment for thermal power plants according to any one of claims 1-7, characterized in that, It also includes a filtration device, which is located outside the processing chamber, and the filtration device includes: A filter cartridge having a second receiving cavity and an air inlet and an exhaust outlet communicating with the second receiving cavity, the air inlet communicating with the first smoke outlet; The filter body is disposed in the second receiving cavity and includes a filter frame and an activated carbon filter layer. The filter frame is detachably connected to the filter cylinder, and the activated carbon filter layer is fitted inside the filter frame to perform secondary dust removal on the flue gas.

9. The ash removal and desulfurization treatment equipment for thermal power plants according to claim 8, characterized in that, The second receiving cavity extends in the vertical direction, and the filter body is at least one and arranged at intervals in the vertical direction for multi-stage secondary dust removal of flue gas.

10. The ash removal and desulfurization treatment equipment for thermal power plants according to claim 8, characterized in that, The filtration device also includes an air intake element, the air inlet of which is connected to the air outlet, and the air outlet of which is connected to the external environment.

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