Cement clinker high-temperature denitration device

Abstract

The utility model relates to cement manufacturing technical field, concretely is a kind of cement clinker high temperature denitration device, including connecting shell, upper casing and lower casing, the inside of connecting shell is provided with cleaning assembly, the cleaning assembly includes the cleaning plate of the inside fixed connection of connecting shell, the side wall of connecting shell is fixedly connected with gear ring, the top and bottom of connecting shell are all fixedly connected with limit ring, by cleaning assembly reaches the cleaning of first filter plate when carrying out denitration reaction each time, the cooperation setting of motor, gear, gear ring, connecting shell, first filter plate and cleaning plate has realized the guarantee in long time denitration reaction, guarantee the filtering function of first filter plate, can make kiln tail flue gas pass smoothly, ensure and ammonia gas fully mix, this makes denitration reaction can be carried out under good condition, so that more nitrogen oxides can react under the action of catalyst with ammonia gas, to significantly improve denitration efficiency.

Description

Technical Field

[0001] This utility model relates to the field of cement manufacturing technology, and in particular to a high-temperature denitrification device for cement clinker. Background Technology

[0002] In today's cement production industry, environmental standards are becoming increasingly stringent, with nitrogen oxide emissions becoming a key target for control. During cement clinker production, a large amount of high-temperature flue gas containing nitrogen oxides is generated at the kiln tail. If not effectively treated, this will cause serious pollution to the atmospheric environment, leading to environmental problems such as acid rain and photochemical smog. Therefore, developing efficient and reliable high-temperature denitrification devices for cement clinker is crucial for the green and sustainable development of the cement industry. Before the flue gas undergoes the denitrification reaction, impurities in the flue gas need to be filtered.

[0003] An existing authorized publication number (CN220238226U) discloses a cement denitrification device. Its technical solution includes: a decomposition furnace body; a fan body fixedly installed at the bottom of the decomposition furnace body; a top shell fixedly installed at the top of the decomposition furnace body; a mounting frame provided inside the top shell; reaction packing material filled inside the mounting frame; and flue gas ducts embedded in the lower outer side of the decomposition furnace body. This utility model solves the problem of ammonia escape during ammonia denitrification, which causes environmental damage.

[0004] Regarding the aforementioned technologies, the existing cement denitrification devices have the following drawbacks: when the denitrification reaction continues, a large amount of dust will be quickly adsorbed on the surface of the filter screen, which not only affects the flow of flue gas and reduces the denitrification efficiency, but also increases the system operating resistance and consumes more energy. Therefore, this utility model provides a high-temperature denitrification device for cement clinker. Utility Model Content

[0005] The purpose of this application is to provide a high-temperature denitrification device for cement clinker to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] A high-temperature denitrification device for cement clinker includes a connecting shell, an upper shell, and a lower shell. A cleaning assembly is disposed inside the connecting shell. The cleaning assembly includes a cleaning plate fixedly connected to the interior of the connecting shell. A toothed ring is fixedly connected to the side wall of the connecting shell. Limiting rings are fixedly connected to the top and bottom of the connecting shell. Sliding grooves adapted to the limiting rings are formed at the bottom of the upper shell and the top of the lower shell. A motor is fixedly connected to the side wall of the lower shell. A gear is fixedly connected to the output end of the motor, and the gear meshes with the toothed ring. A first filter plate is disposed inside the connecting shell, and the cleaning plate is attached to the first filter plate.

[0008] Preferably, the side wall of the lower housing is fixedly connected to a communicating air inlet pipe, and the inner bottom wall of the lower housing is fixedly connected to a guide plate.

[0009] Preferably, the bottom of the guide plate is fixedly connected to a connected collection chamber, and the side wall of the upper housing and the side wall of the lower housing are fixedly connected to the same connecting seat.

[0010] Preferably, an air guide pipe is fixedly connected to the top of the upper housing, the air guide pipe penetrates the upper housing, and multiple jet nozzles are provided on the side wall of the air guide pipe.

[0011] Preferably, a second filter plate is provided inside the upper housing, a baffle is fixedly connected to the top of the second filter plate, a protrusion is fixedly connected to the top of the second filter plate, the air guide pipe passes through the first filter plate and the second filter plate, and one end of the air guide pipe is fixedly connected to the top of the cleaning plate.

[0012] Preferably, the side wall of the air duct is hinged to a scraper, and the bottom of the scraper is in contact with the top of the second filter plate.

[0013] Preferably, the side wall of the upper housing has a slot, and a collection box is provided on the side wall of the upper housing.

[0014] In summary, the technical effects and advantages of this utility model are as follows:

[0015] The cleaning assembly cleans the first filter plate during each denitrification reaction. The coordinated design of the motor, gears, gear ring, connecting shell, first filter plate, and cleaning plate ensures the filtration function of the first filter plate during long-term denitrification reactions, allowing the kiln tail flue gas to pass smoothly and ensuring thorough mixing with ammonia. This allows the denitrification reaction to proceed under favorable conditions, enabling more nitrogen oxides to react with ammonia under the action of a catalyst, thereby significantly improving denitrification efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a first-view axial side view of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the air guide tube of this utility model;

[0019] Figure 3This is a schematic diagram of the scraper structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the cleaning board of this utility model.

[0021] In the diagram: 1. Upper housing; 2. Connecting seat; 3. Lower housing; 4. Collection chamber; 5. Air inlet pipe; 6. Gear; 7. Collection box; 8. Air guide pipe; 9. Jet nozzle; 10. Scraper; 11. Limiting ring; 12. Motor; 13. Guide plate; 14. Gear ring; 15. Connecting shell; 16. First filter plate; 17. Second filter plate; 18. Protrusion; 19. Cleaning plate; 20. Baffle. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Example 1: Reference Figure 1-4The high-temperature denitrification device for cement clinker shown includes a connecting shell 15, an upper housing 1, and a lower housing 3. The connecting shell 15 connects the upper housing 1 and the lower housing 3 and provides installation space for the internal cleaning components. The cleaning components are installed inside the connecting shell 15, including a cleaning plate 19 fixedly connected to the inside of the connecting shell 15. The cleaning plate 19 is used to clean impurities and dust adsorbed on the surface of the first filter plate 16 during device operation, ensuring the filtration performance of the first filter plate 16 and preventing dust accumulation from affecting the denitrification efficiency. A gear ring 14 is fixedly connected to the side wall of the connecting shell 15. The gear ring 14 cooperates with the gear 6 at the output end of the motor 12 to realize the rotation of the connecting shell 15, thereby driving the cleaning plate 19 to rotate and clean. Limiting rings 11 are fixedly connected to the top and bottom of the connecting shell 15. The bottom of the upper housing 1 and the top of the lower housing 3 are provided with sliding grooves adapted to the limiting rings 11. The connecting shell 15 is designed to limit its vertical displacement and ensure its stability during rotation. A motor 12 is fixedly connected to the side wall of the lower housing 3, providing power for the operation of the entire cleaning assembly. A gear 6 is fixedly connected to the output end of the motor 12, which meshes with a gear ring 14. The rotation of the motor 12 drives the gear 6 to rotate, which in turn drives the gear ring 14 to rotate, thus enabling the connecting shell 15 and the cleaning plate 19 to rotate. A first filter plate 16 is installed inside the connecting shell 15. The first filter plate 16 is used to filter the kiln tail flue gas introduced from the air inlet pipe 5, intercepting dust and other impurities in the flue gas to prevent them from entering the subsequent denitrification reaction area and affecting the reaction effect. The cleaning plate 19 is attached to the first filter plate 16 to ensure that the cleaning plate 19 can effectively clean the impurities on the surface of the first filter plate 16 during rotation.

[0025] Example 2: Reference Figure 1-4Based on the same concept as in Embodiment 1 above, this embodiment further proposes that the side wall of the lower casing 3 is fixedly connected to a communicating air inlet pipe 5. The air inlet pipe 5 is used to introduce high-temperature flue gas containing pollutants such as nitrogen oxides generated at the tail of the cement kiln, introducing the flue gas into the interior of the lower casing 3 to prepare for subsequent denitrification treatment. The bottom wall of the interior of the lower casing 3 is fixedly connected to a guide plate 13. The guide plate 13 can guide the impurities and dust falling from the first filter plate 16 and the water generated by the denitrification reaction, causing them to converge towards the center for unified guidance into the collection chamber 4. The bottom of the guide plate 13 is fixedly connected to a communicating collection chamber 4. The collection chamber 4 is used to collect the impurities and dust and water guided by the guide plate 13 for convenient centralized treatment and to prevent them from escaping into the device. Internal buildup affects operation; the side walls of the upper casing 1 and the lower casing 3 are fixedly connected to the same connecting seat 2, which stabilizes the connection between the upper casing 1 and the lower casing 3, enhancing the stability of the entire device structure; a gas guide pipe 8 is fixedly connected to the top of the upper casing 1, penetrating the upper casing 1, and is used to introduce ammonia into the interior of the upper casing 1. Ammonia acts as a reducing agent in the denitrification reaction, reacting with nitrogen oxides in the flue gas; multiple jet nozzles 9 are provided on the side wall of the gas guide pipe 8, which can evenly spray the ammonia in the gas guide pipe 8, allowing the ammonia to fully mix with the flue gas entering the upper casing 1, improving the denitrification reaction efficiency; a second filter plate 17 is provided inside the upper casing 1, which can filter... The flue gas after the first denitrification reaction is filtered again to further remove residual impurities and unreacted solids, improving the purification effect. A baffle 20 is fixedly connected to the top of the second filter plate 17. The baffle 20 allows impurities such as ammonium sulfate to fall into the collection box 7 after the scraper 10 has swept around once. A protrusion 18 is fixedly connected to the top of the second filter plate 17 to prevent the scraper 10 from being jammed by the baffle 20 during movement. When the scraper 10 touches the protrusion 18, it raises the scraper 10 to avoid the baffle 20. An air guide pipe 8 passes through the first filter plate 16 and the second filter plate 17. One end of the air guide pipe 8 is fixedly connected to the top of the cleaning plate 19, allowing the air guide pipe 8 to... When the cleaning plate 19 rotates, it can rotate synchronously, driving the scraper 10 to rotate and allowing the ammonia gas to mix more evenly with the flue gas. The side wall of the air duct 8 is hinged to the scraper 10, which is used to clean the impurities on the top surface of the second filter plate 17 when the air duct 8 rotates, preventing the accumulation of impurities from affecting the filtration effect of the second filter plate 17. The bottom of the scraper 10 is in contact with the top of the second filter plate 17, ensuring that the scraper 10 can effectively scrape off the impurities on the second filter plate 17. The side wall of the upper housing 1 is provided with a slot, which is used to facilitate the installation and removal of the collection box 7. The side wall of the upper housing 1 is provided with a collection box 7, which is used to collect the impurities scraped off from the second filter plate 17 by the scraper 10, making it convenient to clean the impurities.

[0026] The working principle of this device is as follows: When using this device, the operator first introduces kiln tail flue gas into the air inlet pipe 5. The flue gas passes through the first filter plate 16, which filters out dust and other impurities in the flue gas. Then, ammonia gas is introduced into the air inlet pipe 8 and sprayed out through multiple jet nozzles 9 to denitrify the flue gas. When the reaction is complete, the operator can start the motor 12. The motor 12, through the meshing between the gear 6 and the gear ring 14, causes the gear ring 14 to pass through the connecting shell 15 and the cleaning plate 19 to clean the impurities and dust adsorbed on the first filter plate 16. The water formed during the denitrification reaction will pass through the first filter plate 16 due to gravity, carrying the impurities and dust through the guide plate 13 and collected in the collection chamber 4.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-temperature denitrification device for cement clinker, comprising a connecting shell (15), an upper casing (1), and a lower casing (3), characterized in that: The connecting shell (15) is provided with a cleaning component inside. The cleaning component includes a cleaning plate (19) fixedly connected to the inside of the connecting shell (15). A toothed ring (14) is fixedly connected to the side wall of the connecting shell (15). Limiting rings (11) are fixedly connected to the top and bottom of the connecting shell (15). The bottom of the upper shell (1) and the top of the lower shell (3) are provided with sliding grooves that are adapted to the limiting rings (11). A motor (12) is fixedly connected to the side wall of the lower shell (3). A gear (6) is fixedly connected to the output end of the motor (12). The gear (6) meshes with the toothed ring (14). A first filter plate (16) is provided inside the connecting shell (15). The cleaning plate (19) is attached to the first filter plate (16).

2. The high-temperature denitrification device for cement clinker according to claim 1, characterized in that: The lower housing (3) has an air inlet pipe (5) fixedly connected to its side wall, and a guide plate (13) fixedly connected to its inner bottom wall.

3. The high-temperature denitrification device for cement clinker according to claim 2, characterized in that: The bottom of the guide plate (13) is fixedly connected to a connected collection chamber (4), and the side wall of the upper housing (1) and the side wall of the lower housing (3) are fixedly connected to the same connecting seat (2).

4. The high-temperature denitrification device for cement clinker according to claim 3, characterized in that: An air duct (8) is fixedly connected to the top of the upper housing (1). The air duct (8) penetrates the upper housing (1), and multiple jet nozzles (9) are provided on the side wall of the air duct (8).

5. A high-temperature denitrification device for cement clinker according to claim 4, characterized in that: The upper housing (1) is provided with a second filter plate (17). A baffle (20) is fixedly connected to the top of the second filter plate (17). A protrusion (18) is fixedly connected to the top of the second filter plate (17). The air guide pipe (8) passes through the first filter plate (16) and the second filter plate (17). One end of the air guide pipe (8) is fixedly connected to the top of the cleaning plate (19).

6. A high-temperature denitrification device for cement clinker according to claim 5, characterized in that: The side wall of the air duct (8) is hinged to a scraper (10), the bottom of which is in contact with the top of the second filter plate (17).

7. A high-temperature denitrification device for cement clinker according to claim 6, characterized in that: The upper housing (1) has a slot on its side wall, and a collection box (7) is provided on the side wall of the upper housing (1).

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