Cement kiln flue gas desulfurization and denitrification device
By designing a desulfurization box with scraper rod and a denitrification box with ventilation disc in the cement kiln flue gas desulfurization and denitrification device, the problems of inconvenient sulfide cleaning and poor denitrification effect in the existing devices are solved, and more efficient flue gas treatment is achieved.
Patent Information
- Application Number
- CN202421794281.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-07-26
AI Technical Summary
When the existing cement kiln flue gas desulfurization and denitrification device is used, the sulfide attached to the desulfurization mesh plate made of calcium oxide materials is inconvenient to clean up, and the ammonia water and flue gas are not in sufficient contact, resulting in poor denitrification effect.
A device including a desulfurization box and a denitrification box is designed. The desulfurization box is equipped with a desulfurization mesh plate and a scraper rod. The drive assembly drives the scraper to rotate to clean up the sulfide; a ventilation tray and multiple air outlets are installed in the denitrification box, and the flue gas is evenly dispersed and sprayed out to contact ammonia water for denitrification treatment.
It improves the convenience of cleaning sulfides on the desulfurization mesh plate, ensures the sealing of the desulfurization box, prevents flue gas from escaping, and improves the contact efficiency between flue gas and ammonia water through the uniform dispersion and spraying design, and improves the denitrification effect.
Smart Images
Figure CN222943234U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of flue gas treatment, and in particular to a cement kiln flue gas desulfurization and denitrification device. Background Art
[0002] Cement kiln, also known as cement rotary kiln, is mainly used for calcining cement clinker. It is divided into two categories: dry process cement kiln and wet process cement kiln. Cement kiln will produce a lot of flue gas in the production process. The flue gas contains substances that pollute the environment, such as sulfur dioxide and nitrogen oxides. The flue gas needs to be purified before discharge. When the existing desulfurization and denitrification device is in use, when the desulfurization mesh plate made of calcium oxide material is used to desulfurize the flue gas, the sulfide produced by the reaction will adhere to the desulfurization mesh plate, which is inconvenient to clean. In addition, when ammonia water is used to denitrify the flue gas, the flue gas and ammonia water are not in sufficient contact, resulting in poor flue gas denitrification effect. Summary of the invention
[0003] The purpose of the embodiment of the present application is to provide a cement kiln flue gas desulfurization and denitrification device, which can solve the technical problems of the existing desulfurization and denitrification device in use. When the flue gas is desulfurized by a desulfurization mesh plate made of calcium oxide material, the sulfide produced by the reaction will adhere to the desulfurization mesh plate, which is inconvenient to clean. In addition, when ammonia water is used to denitrify the flue gas, the flue gas and the ammonia water are not in sufficient contact, resulting in poor flue gas denitrification effect.
[0004] The embodiment of the present application provides a cement kiln flue gas desulfurization and denitrification device, including a desulfurization box and a denitrification box, the desulfurization box is connected with an air inlet pipe, a connecting pipe is connected between the desulfurization box and the denitrification box, an air outlet pipe is connected to the denitrification box, a desulfurization mesh plate is arranged in the desulfurization box, a scraper rod is fitted on the lower end of the desulfurization mesh plate, a transmission assembly is arranged on the desulfurization box, an impeller is arranged in the air inlet pipe, the impeller is connected to the scraper rod through the transmission assembly, a discharge assembly is arranged below the desulfurization mesh plate, a sealing assembly is arranged on the desulfurization box, a ventilation disk is arranged in the denitrification box, the connecting pipe is connected to the ventilation disk, and a plurality of air outlets are evenly arranged on the ventilation disk.
[0005] Wherein, the transmission assembly includes a first rotating shaft, a second rotating shaft, a first sprocket, a second sprocket and a chain, a first mounting plate is fixedly provided on the desulfurization box, the impeller is arranged in the intake pipe, the first rotating shaft passes through the first mounting plate and the intake pipe, the first mounting plate and the first rotating shaft, the intake pipe and the first rotating shaft are rotatably connected through bearings respectively, one end of the first rotating shaft is fixedly connected to the impeller, the first sprocket is fixedly connected to the other end of the first rotating shaft, the second rotating shaft passes through the desulfurization box and the desulfurization mesh plate, the desulfurization box and the second rotating shaft, the desulfurization mesh plate and the second rotating shaft are rotatably connected through bearings respectively, one end of the second rotating shaft is fixedly connected to the scraper rod, the second sprocket is fixedly connected to the other end of the second rotating shaft, and the first sprocket and the second sprocket are both meshingly connected with the chain.
[0006] Among them, the discharge assembly includes a sealing scraper, a motor, a screw and a sliding rod, the sealing scraper is fitted with the inner bottom end of the desulfurization box, the screw is rotatably arranged in the desulfurization box through a bearing, the motor drives the screw to rotate, the sliding rod is fixedly arranged in the desulfurization box, the sealing scraper is threadedly sleeved on the screw, and the sealing scraper is limitedly slidably connected to the sliding rod, the side bottom end of the desulfurization box is connected to a first discharge pipe and a second discharge pipe, and the first discharge pipe and the second discharge pipe are respectively arranged on the left and right sides of the desulfurization box.
[0007] Wherein, the sealing assembly includes a second mounting plate, a third mounting plate, a first cylinder, a second cylinder, a first sealing baffle and a second sealing baffle, the second mounting plate and the third mounting plate are both fixedly arranged on the desulfurization box, the first cylinder is arranged on the second mounting plate, the second cylinder is arranged on the third mounting plate, the first sealing baffle is arranged on the first discharge pipe, the first cylinder drives the first sealing baffle to move, the second sealing baffle is arranged on the second discharge pipe, and the second cylinder drives the second sealing baffle to move.
[0008] Wherein, a feeding pipe is connected to the denitration box, and a valve is arranged on the feeding pipe.
[0009] Beneficial effects of the utility model:
[0010] The utility model provides a cement kiln flue gas desulfurization and denitrification device. When in use, the flue gas generated by the cement kiln is sent into the desulfurization box through an air inlet pipe, the flue gas contacts and reacts with the calcium oxide material of the desulfurization mesh plate to perform desulfurization treatment, the sulfide generated by the desulfurization reaction adheres to the lower end surface of the desulfurization mesh plate, the flue gas flowing in the air inlet pipe drives the scraper rod to rotate through the transmission component, the scraper rod scrapes off and cleans the sulfide, the desulfurized flue gas is sent into the ventilation plate in the denitrification box through a connecting pipe, the flue gas is then evenly dispersed and sprayed out from a plurality of air outlets and contacts and reacts with ammonia water to perform denitrification treatment, and the denitrified flue gas is discharged through the air outlet pipe; when it is necessary to clean the sulfide accumulated in the desulfurization box, the cleaning can be completed by the coordinated use of the discharge component and the sealing component.
[0011] The device is provided with a transmission component, and the flow of the flue gas itself can drive the scraper rod to rotate, and the scraper rod scrapes off and cleans the sulfides, thereby improving the convenience of cleaning; the device is provided with a discharge component and a sealing component, and the sulfides accumulated in the desulfurization box can be cleaned without stopping the machine, thereby ensuring the continuous production, and the sealing of the desulfurization box is maintained during the cleaning process to prevent the flue gas from escaping; the device is provided with a ventilation plate and multiple air outlets, so that the flue gas is sprayed into the ammonia water evenly and dispersedly, so that the flue gas and the ammonia water are fully contacted and reacted, thereby improving the flue gas denitrification effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.
[0013] Figure 1 It is a cross-sectional schematic diagram of the overall main structure in some embodiments of the present application;
[0014] Figure 2 It is a cross-sectional schematic diagram of the top view of the internal structure of the desulfurization box in some embodiments of the present application;
[0015] Figure 3 It is a cross-sectional schematic diagram of the top view of the internal structure of the denitrification box in some embodiments of the present application.
[0016] The reference numerals are:
[0017] 1. Desulfurization box; 11. Air inlet pipe; 12. Desulfurization mesh plate; 13. Scraper rod; 14. Impeller; 15. First mounting plate; 16. First discharge pipe; 17. Second discharge pipe;
[0018] 2. Denitrification box; 21. Air outlet pipe; 22. Ventilation plate; 23. Air outlet; 24. Feeding pipe; 25. Valve;
[0019] 3. Connecting pipe;
[0020] 4. Transmission assembly; 41. First rotating shaft; 42. Second rotating shaft; 43. First sprocket; 44. Second sprocket; 45. Chain;
[0021] 5. Discharging assembly; 51. Sealing scraper; 52. Motor; 53. Screw; 54. Sliding rod;
[0022] 6. Sealing assembly; 61. Second mounting plate; 62. Third mounting plate; 63. First cylinder; 64. Second cylinder; 65. First sealing baffle; 66. Second sealing baffle. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0024] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.
[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0026] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0027] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0028] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0029] like Figure 1 and 3 As shown, an embodiment of the present application provides a cement kiln flue gas desulfurization and denitrification device, including a desulfurization box 1 and a denitrification box 2, the desulfurization box 1 is connected with an air inlet pipe 11, a connecting pipe 3 is connected between the desulfurization box 1 and the denitrification box 2, an air outlet pipe 21 is connected to the denitrification box 2, a desulfurization mesh plate 12 is arranged in the desulfurization box 1, a scraper rod 13 is fitted at the lower end of the desulfurization mesh plate 12, a transmission assembly 4 is arranged on the desulfurization box 2, an impeller 14 is arranged in the air inlet pipe 11, the impeller 14 is connected to the scraper rod 13 through the transmission assembly 4, a discharge assembly 5 is arranged below the desulfurization mesh plate 12, a sealing assembly 6 is arranged on the desulfurization box 1, a ventilation plate 22 is arranged in the denitrification box 2, the connecting pipe 3 is connected to the ventilation plate 22, and a plurality of air outlets 23 are evenly arranged on the ventilation plate 22.
[0030] When in use, the flue gas generated by the cement kiln is sent into the desulfurization box 1 through the air inlet pipe 11, and the flue gas contacts and reacts with the calcium oxide material of the desulfurization mesh plate 12 for desulfurization treatment. The sulfide generated by the desulfurization reaction adheres to the lower end surface of the desulfurization mesh plate 12, and the flue gas flowing in the air inlet pipe 11 drives the scraper 13 to rotate through the transmission component 4, and the scraper 13 scrapes off and cleans the sulfide. The desulfurized flue gas is sent to the ventilation plate 22 in the denitrification box 2 through the connecting pipe 3, and the flue gas is then evenly dispersed and sprayed out from multiple air outlets 23 and contacts and reacts with ammonia water for denitrification treatment. The denitrified flue gas is discharged through the air outlet pipe 21; when it is necessary to clean the sulfide accumulated in the desulfurization box 1, the cleaning can be completed by the coordinated use of the discharge component 5 and the sealing component 6.
[0031] The device is provided with a transmission component 4, and the flow of the flue gas itself can drive the scraper rod 13 to rotate, and the scraper rod 13 scrapes off and cleans the sulfides, thereby improving the convenience of cleaning; the device is provided with a discharge component 5 and a sealing component 6, and the sulfides accumulated in the desulfurization box 1 can be cleaned without stopping the machine, thereby ensuring the continuous production, and the sealing of the desulfurization box 1 is maintained during the cleaning process to prevent the flue gas from escaping; the device is provided with a ventilation plate 22 and a plurality of air outlets 23, so that the flue gas is sprayed into the ammonia water evenly and dispersedly, so that the flue gas and the ammonia water are fully contacted and reacted, thereby improving the flue gas denitrification effect.
[0032] like Figure 1 As shown, in this embodiment, the transmission assembly 4 includes a first rotating shaft 41, a second rotating shaft 42, a first sprocket 43, a second sprocket 44 and a chain 45. The desulfurization box 1 is fixedly provided with a first mounting plate 15, and the impeller 14 is arranged in the intake pipe 11. The first rotating shaft 41 passes through the first mounting plate 15 and the intake pipe 11. The first mounting plate 15 and the first rotating shaft 41, and the intake pipe 11 and the first rotating shaft 41 are respectively rotatably connected through bearings. One end of the first rotating shaft 41 is fixedly connected to the impeller 14, and the first sprocket 43 is fixedly connected to the other end of the first rotating shaft 41. The second rotating shaft 42 passes through the desulfurization box 1 and the desulfurization mesh plate 12. The desulfurization box 1 and the second rotating shaft 42, and the desulfurization mesh plate 12 and the second rotating shaft 42 are respectively rotatably connected through bearings. One end of the second rotating shaft 42 is fixedly connected to the scraper rod 13, and the second sprocket 44 is fixedly connected to the other end of the second rotating shaft 42. The first sprocket 43 and the second sprocket 44 are both meshedly connected with the chain 45.
[0033] When in use, the flue gas flowing in the air intake pipe 11 drives the impeller 14 to rotate, the impeller 14 drives the first rotating shaft 41 to rotate, the first rotating shaft 41 drives the first sprocket 43 to rotate, the first sprocket 43 drives the chain 45 to rotate, the chain 45 drives the second sprocket 44 to rotate, the second sprocket 44 drives the second rotating shaft 42 to rotate, the second rotating shaft 42 drives the scraper rod 13 to rotate, and the scraper rod 13 scrapes off and cleans the sulfide; the first mounting plate 15 supports the first rotating shaft 41.
[0034] like Figure 1 and 2 As shown, in this embodiment, the discharge assembly 5 includes a sealing scraper 51, a motor 52, a screw 53 and a sliding rod 54. The sealing scraper 51 is fitted with the inner bottom end of the desulfurization box 1, and the screw 53 is rotatably arranged in the desulfurization box 1 through a bearing. The motor 52 drives the screw 53 to rotate, and the sliding rod 54 is fixedly arranged in the desulfurization box 1. The sealing scraper 51 is threadedly sleeved on the screw 53, and the sealing scraper 51 is slidably connected with the sliding rod 54. The side bottom end of the desulfurization box 1 is connected with a first discharge pipe 16 and a second discharge pipe 17, and the first discharge pipe 16 and the second discharge pipe 17 are respectively arranged on the left and right sides of the desulfurization box 1.
[0035] During use, when it is necessary to clean the sulfide accumulated in the desulfurization box 1, the motor 52 is turned on to drive the screw 53 to rotate, and the screw 53 drives the sealing scraper 51 to move toward the first discharge pipe 16, and the sealing scraper 51 scrapes the sulfide into the first discharge pipe 16. Then, the motor 52 is turned on to drive the screw 53 to rotate in the opposite direction, and the screw 53 drives the sealing scraper 51 to move toward the second discharge pipe 17, and the sealing scraper 51 scrapes the sulfide into the second discharge pipe 17, and the cleaning is completed; the sealing scraper 51 and the sliding rod 54 are used in combination to guide and limit the sealing scraper 51.
[0036] like Figure 1 As shown, in this embodiment, the sealing assembly 6 includes a second mounting plate 61, a third mounting plate 62, a first cylinder 63, a second cylinder 64, a first sealing baffle 65 and a second sealing baffle 66. The second mounting plate 61 and the third mounting plate 62 are both fixedly arranged on the desulfurization box 1, the first cylinder 63 is arranged on the second mounting plate 61, the second cylinder 64 is arranged on the third mounting plate 62, the first sealing baffle 65 is arranged on the first discharge pipe 16, the first cylinder 63 drives the first sealing baffle 65 to move, the second sealing baffle 66 is arranged on the second discharge pipe 17, and the second cylinder 64 drives the second sealing baffle 66 to move.
[0037] The first sealing baffle 65 can open or close the first discharge pipe 16, and the second sealing baffle 66 can open or close the second discharge pipe 17. When in use, when it is necessary to clean the sulfide accumulated in the desulfurization box 1, the motor 52 is turned on to drive the screw 53 to rotate, and the screw 53 drives the sealing scraper 51 to move toward the first discharge pipe 16. The sealing scraper 51 scrapes the sulfide into the first discharge pipe 16. The sealing scraper 51 fits with the inner wall of the desulfurization box 1 to prevent the flue gas from escaping from the first discharge pipe 16. Then, the first cylinder 63 is turned on to drive the first sealing baffle 65 to move to open the first discharge pipe 16, and the first discharge pipe 17 can be cleaned. 16 is discharged; then the motor 52 is turned on to drive the screw 53 to rotate in the opposite direction, and the screw 53 drives the sealing scraper 51 to move toward the second discharge pipe 17, and the sealing scraper 51 scrapes the sulfide into the second discharge pipe 17. The sealing scraper 51 fits the inner wall of the desulfurization box 1 to prevent the flue gas from escaping from the second discharge pipe 17, and then the second cylinder 64 is turned on to drive the second sealing baffle 66 to move to open the second discharge pipe 17, so that the sulfide in the second discharge pipe 17 can be discharged, and the cleaning is completed; the second mounting plate 61 supports the first cylinder 63, and the third mounting plate 62 supports the second cylinder 64.
[0038] like Figure 1 As shown, in this embodiment, a feeding pipe 24 is connected to the denitration box 2 , and a valve 25 is provided on the feeding pipe 24 ; when in use, a staff member can open the valve 25 and add ammonia water into the denitration box 2 through the feeding pipe 24 .
[0039] Working principle: When the cement kiln flue gas desulfurization and denitrification device provided in the present application is used, the flue gas generated by the cement kiln is sent into the desulfurization box 1 through the air inlet pipe 11, and the flue gas contacts and reacts with the calcium oxide material of the desulfurization mesh plate 12 for desulfurization treatment. The sulfide generated by the desulfurization reaction adheres to the lower end surface of the desulfurization mesh plate 12, and the flue gas flowing in the air inlet pipe 11 drives the impeller 14 to rotate, and the impeller 14 drives the first rotating shaft 41 to rotate, and the first rotating shaft 41 drives the first sprocket 43 to rotate, and the first sprocket 43 drives the chain 45 to rotate, and the chain 45 drives the second sprocket 44 to rotate, and the second sprocket 44 drives the second rotating shaft 42 to rotate, and the second rotating shaft 42 drives the scraper 13 to rotate, and the scraper 13 scrapes off and cleans the sulfide, and the desulfurized flue gas is sent into the ventilation plate 22 in the denitrification box 2 through the connecting pipe 3, and the flue gas is then evenly dispersed and sprayed out from multiple air outlets 23 and contacts and reacts with ammonia water for denitrification treatment, and the denitrified flue gas is discharged through the air outlet pipe 21;
[0040] When it is necessary to clean the sulfide accumulated in the desulfurization box 1, the motor 52 is turned on to drive the screw 53 to rotate, and the screw 53 drives the sealing scraper 51 to move toward the first discharge pipe 16. The sealing scraper 51 scrapes the sulfide into the first discharge pipe 16. The sealing scraper 51 fits the inner wall of the desulfurization box 1 to prevent the flue gas from escaping from the first discharge pipe 16. Then, the first cylinder 63 is turned on to drive the first sealing baffle 65 to move to open the first discharge pipe 16, so that the sulfide in the first discharge pipe 16 can be cleaned. The sulfides are discharged; then the motor 52 is turned on to drive the screw 53 to rotate in the opposite direction, and the screw 53 drives the sealing scraper 51 to move toward the second discharge pipe 17, and the sealing scraper 51 scrapes the sulfide into the second discharge pipe 17. The sealing scraper 51 fits against the inner wall of the desulfurization box 1 to prevent the flue gas from escaping from the second discharge pipe 17. Then, the second cylinder 64 is turned on to drive the second sealing baffle 66 to move to open the second discharge pipe 17, so that the sulfide in the second discharge pipe 17 can be discharged, and the cleaning is completed.
[0041] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A cement kiln flue gas desulfurization and denitrification device, characterized in that: The invention comprises a desulfurization box (1) and a denitration box (2), wherein the desulfurization box (1) is connected to an air inlet pipe (11), a connecting pipe (3) is connected between the desulfurization box (1) and the denitration box (2), an air outlet pipe (21) is connected to the denitration box (2), a desulfurization mesh plate (12) is arranged in the desulfurization box (1), a scraper rod (13) is attached to the lower end of the desulfurization mesh plate (12), a transmission assembly (4) is arranged on the desulfurization box (1), and the air inlet pipe (11) is connected to the denitration box (2). An impeller (14) is arranged in the air pipe (11), and the impeller (14) is connected to the scraper (13) through the transmission assembly (4). A discharge assembly (5) is arranged below the desulfurization mesh plate (12). A sealing assembly (6) is arranged on the desulfurization box (1). A ventilation plate (22) is arranged in the denitrification box (2). The connecting pipe (3) is connected to the ventilation plate (22), and a plurality of air outlets (23) are evenly arranged on the ventilation plate (22).
2. The cement kiln flue gas desulfurization and denitrification device according to claim 1, characterized in that: The transmission assembly (4) comprises a first rotating shaft (41), a second rotating shaft (42), a first sprocket (43), a second sprocket (44) and a chain (45); a first mounting plate (15) is fixedly arranged on the desulfurization box (1); the impeller (14) is arranged in the intake pipe (11); the first rotating shaft (41) passes through the first mounting plate (15) and the intake pipe (11); the first mounting plate (15) and the first rotating shaft (41), the intake pipe (11) and the first rotating shaft (41) are rotatably connected via bearings respectively; one end of the first rotating shaft (41) is fixedly arranged on the impeller (14); The first sprocket (43) is fixedly connected to the other end of the first rotating shaft (41), the second rotating shaft (42) passes through the desulfurization box (1) and the desulfurization mesh plate (12), the desulfurization box (1) and the second rotating shaft (42), the desulfurization mesh plate (12) and the second rotating shaft (42) are respectively rotatably connected through bearings, one end of the second rotating shaft (42) is fixedly connected to the scraper rod (13), the second sprocket (44) is fixedly connected to the other end of the second rotating shaft (42), and the first sprocket (43) and the second sprocket (44) are both meshedly connected to the chain (45).
3. The cement kiln flue gas desulfurization and denitrification device according to claim 1, characterized in that: The discharge assembly (5) comprises a sealing scraper (51), a motor (52), a screw (53) and a sliding rod (54); the sealing scraper (51) is fitted with the inner bottom end of the desulfurization box (1); the screw (53) is rotatably arranged in the desulfurization box (1) through a bearing; the motor (52) drives the screw (53) to rotate; the sliding rod (54) is fixedly arranged in the desulfurization box (1); the sealing scraper (51) is threadedly sleeved on the screw (53), and the sealing scraper (51) is limitedly slidably connected to the sliding rod (54); the side bottom end of the desulfurization box (1) is connected to a first discharge pipe (16) and a second discharge pipe (17); the first discharge pipe (16) and the second discharge pipe (17) are respectively arranged on the left and right sides of the desulfurization box (1).
4. The cement kiln flue gas desulfurization and denitrification device according to claim 3, characterized in that: The sealing assembly (6) comprises a second mounting plate (61), a third mounting plate (62), a first cylinder (63), a second cylinder (64), a first sealing baffle (65) and a second sealing baffle (66); the second mounting plate (61) and the third mounting plate (62) are both fixedly mounted on the desulfurization box (1); the first cylinder (63) is mounted on the second mounting plate (61); the second cylinder (64) is mounted on the third mounting plate (62); the first sealing baffle (65) is mounted on the first discharge pipe (16); the first cylinder (63) drives the first sealing baffle (65) to move; the second sealing baffle (66) is mounted on the second discharge pipe (17); the second cylinder (64) drives the second sealing baffle (66) to move.
5. The cement kiln flue gas desulfurization and denitrification device according to claim 1, characterized in that: The denitration box (2) is connected to a feeding pipe (24), and a valve (25) is provided on the feeding pipe (24).