A denitrification equipment suitable for high altitude and low pressure

Abstract

This utility model relates to a denitrification device suitable for high-altitude, low-pressure environments, belonging to the technical field of denitrification equipment. It includes an installation platform, on the top of which a denitrification tank and a preparatory tank are fixedly installed. A connecting pipe is fixedly installed on the top of the denitrification tank, and the connecting pipe is fixedly connected to one side of the preparatory tank. A spray pipe is fixedly installed on the inner wall of the denitrification tank, and a denitrification nozzle is fixedly installed at the bottom of the spray pipe. A supplementary denitrification assembly is installed inside the preparatory tank. This denitrification device for high-altitude, low-pressure environments utilizes a preparatory tank on one side of the denitrification tank, connecting the two tanks via a connecting pipe. A first exhaust gas concentration meter is installed on the connecting pipe to detect the nitrogen content in the connecting pipe. When nitrogen is detected in the gas in the connecting pipe, a denitrification solution is introduced into the preparatory pipe and sprayed out through the preparatory nozzle for secondary denitrification, ensuring complete denitrification of the discharged exhaust gas.

Description

Technical Field

[0001] This utility model relates to the technical field of denitrification equipment, specifically a denitrification equipment suitable for high altitude and low air pressure. Background Technology

[0002] Nitrogen removal technology is involved in raw material handling, wastewater and waste gas treatment, and safety control in explosives production. In explosives production, nitrogen is mainly found in nitrate-based raw materials such as ammonium nitrate, potassium nitrate, or nitrogen-containing organic compounds. Nitrogen-containing wastewater (e.g., nitrate ions) and waste gas (e.g., nitrogen oxides) generated during production must meet emission standards. Denitrification towers are used to treat waste gas containing nitrogen oxides, absorbing these oxides with an alkaline solution such as sodium hydroxide.

[0003] Utility model patent CN212800065U discloses a wastewater denitrification device, comprising several reagent addition mechanisms connected sequentially to an anaerobic ammoniation reactor, a clarifier, a pre-reactor, a main reactor, a post-reactor, and a sedimentation tank. Each reagent addition mechanism includes a reagent bottle, a dispensing container, a first connecting pipe connecting the reagent bottle and the dispensing container, a second connecting pipe connecting the dispensing container, a first switching valve installed on the first connecting pipe, and a second switching valve installed on the second connecting pipe. This wastewater denitrification device allows wastewater to pass sequentially through the anaerobic ammoniation reactor, clarifier, pre-reactor, main reactor, post-reactor, and sedimentation tank, with reagents added via the reagent addition mechanisms to complete denitrification. The dispensing containers of the reagent addition mechanisms can directly pre-store the required reagent dosage, facilitating rapid and accurate reagent dosage, resulting in good wastewater denitrification effect and high denitrification efficiency.

[0004] However, this denitrification device uses a fixed amount of reagent for denitrification treatment. When the nitrogen concentration in the wastewater or exhaust gas to be treated increases, incomplete denitrification is likely to occur, resulting in non-compliance with emission standards. Therefore, a denitrification device suitable for high altitude and low air pressure is proposed to solve the problems mentioned above. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a denitrification device suitable for high altitudes and low air pressures, which has advantages such as avoiding incomplete denitrification and solves the problems mentioned in the background technology.

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

[0007] A nitrogen removal device suitable for high altitude and low pressure includes an installation platform. A nitrogen removal tank and a preparatory tank are fixedly installed on the top of the installation platform. A connecting pipe is fixedly installed on the top of the nitrogen removal tank and is fixedly connected to one side of the preparatory tank. A spray pipe is fixedly installed on the inner wall of the nitrogen removal tank and a nitrogen removal nozzle is fixedly installed at the bottom of the spray pipe. A supplementary nitrogen removal component is provided inside the preparatory tank.

[0008] The supplementary denitrification assembly includes a preparatory pipe fixedly installed on the inner wall of the preparatory tank, a preparatory nozzle fixedly installed at the bottom of the preparatory pipe, the preparatory nozzle being located above the connecting pipe, and a first exhaust gas concentration meter fixedly installed at the top of the connecting pipe.

[0009] Furthermore, a support rod is fixedly installed on the top of the installation platform, an installation top plate is fixedly installed on the top of the support rod, two preparation tanks are fixedly installed on the top of the installation top plate, an output pipe is fixedly installed on the bottom of the preparation tanks, and an output valve is fixedly installed on the surface of the output pipe.

[0010] Furthermore, an output pump is fixedly installed on the top of the installation platform, one end of one of the output pipes is connected to the input end of the output pump, and a denitrification conveying pipe is fixedly installed at the output end of the output pump, which is connected to the spray pipe.

[0011] Furthermore, a preparatory pump is fixedly installed on the top of the installation platform, and one end of another output pipe is connected to the input end of the preparatory pump. A preparatory delivery pipe is fixedly installed on the output end of the preparatory pump, and one end of the preparatory delivery pipe is connected to the preparatory pipe.

[0012] Furthermore, a stirring shaft is rotatably mounted on the inner top wall of the preparation tank, stirring blades are fixedly mounted on the surface of the stirring shaft, and a stirring motor is fixedly mounted on the top of the preparation tank, with the output shaft of the stirring motor fixedly connected to the top end of the stirring shaft.

[0013] Furthermore, a feed pipe and a dilution pipe are fixedly installed on the top of the preparation tank, and a solution concentration meter is fixedly installed on the inner side wall of the preparation tank.

[0014] Furthermore, an exhaust gas inlet pipe is fixedly installed on one side of the denitrification tank, a second exhaust gas concentration meter is fixedly installed on the top of the exhaust gas inlet pipe, a first booster fan is fixedly installed on the surface of the exhaust gas inlet pipe, and a second booster fan is fixedly installed on the surface of the connecting pipe.

[0015] Furthermore, a waste gas outlet pipe is fixedly installed on the top of the preparation tank, and drain pipes are fixedly installed at the bottom of both the denitrification tank and the preparation tank. A drain valve is fixedly installed on the surface of the drain pipe, and a controller is fixedly installed on the top of the installation platform.

[0016] Compared with the prior art, this utility model provides a nitrogen removal device suitable for high altitude and low air pressure, which has the following beneficial effects:

[0017] 1. This denitrification equipment, applicable to high-altitude and low-pressure environments, uses a preparatory tank on one side of the denitrification tank, connected by a connecting pipe. A first waste gas concentration meter is installed on the connecting pipe to detect the nitrogen content in the connecting pipe. When nitrogen is detected in the gas, a denitrification solution is introduced into the preparatory pipe and sprayed out through a preparatory nozzle for secondary denitrification. This ensures complete denitrification of the discharged waste gas, solving the problem of incomplete denitrification and non-compliance with emission standards that often occurs with common denitrification devices that use a fixed amount of reagent.

[0018] 2. This denitrification equipment, applicable to high altitudes and low air pressure, uses a second exhaust gas concentration meter installed on the exhaust gas inlet pipe to detect the nitrogen content in the exhaust gas. The nitrogen content data is transmitted to the controller, which calculates the required concentration of the denitrifying agent. The agent is then mixed in a preparation tank, and the concentration is detected by a solution concentration meter to prepare a denitrifying agent of the appropriate concentration. This allows for precise control of the amount of denitrifying agent used and avoids waste. Attached Figure Description

[0019] Figure 1 This is a front sectional view of the structure of this utility model;

[0020] Figure 2 This is a front view of the structure of this utility model;

[0021] Figure 3 This is a side sectional view of the denitrification tank of this utility model;

[0022] Figure 4 This is a three-dimensional drawing of the preparatory tube for this utility model.

[0023] In the diagram: 1. Installation platform; 2. Denitrification tank; 3. Preparatory tank; 4. Connecting pipe; 5. Spray pipe; 6. Denitrification nozzle; 7. Preparatory pipe; 8. Preparatory nozzle; 9. First waste gas concentration meter; 10. Support rod; 11. Mounting top plate; 12. Preparation tank; 13. Output pipe; 14. Output valve; 15. Output pump; 16. Denitrification conveying pipe; 17. Preparatory pump; 18. Preparatory conveying pipe; 19. Stirring shaft; 20. Stirring blades; 21. Stirring motor; 22. Feed pipe; 23. Dilution pipe; 24. Solution concentration meter; 25. Waste gas inlet pipe; 251. Second waste gas concentration meter; 26. First booster fan; 27. Second booster fan; 28. Waste gas outlet pipe; 29. ​​Drain pipe; 30. Drain valve; 31. Controller. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0025] Please see Figures 1 to 4 This embodiment of a denitrification device suitable for high altitude and low pressure includes an installation platform 1. A denitrification tank 2 and a preparation tank 3 are fixedly installed on the top of the installation platform 1. A connecting pipe 4 is fixedly installed on the top of the denitrification tank 2 and is fixedly connected to one side of the preparation tank 3. A spray pipe 5 is fixedly installed on the inner wall of the denitrification tank 2 and a denitrification nozzle 6 is fixedly installed at the bottom of the spray pipe 5. A supplementary denitrification component is provided inside the preparation tank 3.

[0026] The supplementary denitrification component includes a preparatory pipe 7 fixedly installed on the inner wall of the preparatory tank 3, a preparatory nozzle 8 fixedly installed at the bottom of the preparatory pipe 7, the preparatory nozzle 8 being located above the connecting pipe 4, and a first exhaust gas concentration meter 9 fixedly installed at the top of the connecting pipe 4.

[0027] Specifically, the nitrogen content of the exhaust gas in the connecting pipe 4 is detected by the first exhaust gas concentration meter 9. When the connecting pipe 4 still contains nitrogen, a denitrifying agent is introduced into the preparatory pipe 7 and sprayed out through the preparatory nozzle 8 to perform secondary denitrification of the exhaust gas, so as to prevent nitrogen residue in the discharged exhaust gas.

[0028] Please see Figure 1 and Figure 2 In this embodiment, a support rod 10 is fixedly installed on the top of the installation platform 1, an installation top plate 11 is fixedly installed on the top of the support rod 10, two preparation tanks 12 are fixedly installed on the top of the installation top plate 11, an output pipe 13 is fixedly installed on the bottom of the preparation tank 12, and an output valve 14 is fixedly installed on the surface of the output pipe 13.

[0029] An output pump 15 is fixedly installed on the top of the installation platform 1. One end of an output pipe 13 is connected to the input end of the output pump 15. A denitrification delivery pipe 16 is fixedly installed at the output end of the output pump 15 and is connected to the spray pipe 5. During denitrification, the output pump 15 extracts the denitrifying agent from one of the preparation tanks 12 and delivers it to the spray pipe 5.

[0030] Meanwhile, a preparatory pump 17 is fixedly installed on the top of the installation platform 1. One end of another output pipe 13 is connected to the input end of the preparatory pump 17. A preparatory delivery pipe 18 is fixedly installed at the output end of the preparatory pump 17, and one end of the preparatory delivery pipe 18 is connected to the preparatory pipe 7. When secondary denitrification is required, the preparatory pump 17 extracts the denitrifying agent from another preparation tank 12 and delivers it to the preparatory pipe 7.

[0031] The mixing tank 12 has a stirring shaft 19 rotatably mounted on its inner top wall, stirring blades 20 fixedly mounted on the surface of the stirring shaft 19, and a stirring motor 21 fixedly mounted on the top of the mixing tank 12. The output shaft of the stirring motor 21 is fixedly connected to the top end of the stirring shaft 19.

[0032] Secondly, a feed pipe 22 and a dilution pipe 23 are fixedly installed on the top of the preparation tank 12, and a solution concentration meter 24 is fixedly installed on the inner wall of the preparation tank 12. The solution concentration meter 24 detects the concentration of the denitrifying agent. The denitrifying agent and diluent are added to the feed pipe 22 and the dilution pipe 23 to dilute the denitrifying agent.

[0033] Please see Figure 1 and Figure 3 In this embodiment, an exhaust gas inlet pipe 25 is fixedly installed on one side of the denitrification tank 2, a second exhaust gas concentration meter 251 is fixedly installed on the top of the exhaust gas inlet pipe 25, a first booster fan 26 is fixedly installed on the surface of the exhaust gas inlet pipe 25, and a second booster fan 27 is fixedly installed on the surface of the connecting pipe 4. The second exhaust gas concentration meter 251 detects the nitrogen content of the exhaust gas entering the denitrification tank 2 and configures the corresponding denitrifying agent concentration according to the denitrification tank 2.

[0034] The preparation tank 3 is equipped with a waste gas outlet pipe 28 fixedly installed on its top. Both the denitrification tank 2 and the preparation tank 3 are equipped with drain pipes 29 fixedly installed at their bottoms. A drain valve 30 is fixedly installed on the surface of the drain pipe 29. A controller 31 is fixedly installed on the top of the installation platform 1. The controller 31 receives the detection signal from the first waste gas concentration meter 9. When nitrogen is still present in the connecting pipe 4, it controls the preparation pump 17 to start.

[0035] The working principle of the above embodiment is as follows: the nitrogen content of the exhaust gas in the connecting pipe 4 is detected by the first exhaust gas concentration meter 9. When the connecting pipe 4 still contains nitrogen, the controller 31 controls the preparatory pump 17 to start, introduces denitrifying agent into the preparatory pipe 7, and sprays it out through the preparatory nozzle 8 to perform secondary denitrification of the exhaust gas.

[0036] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods, and any method that achieves the desired beneficial effect can be implemented. Furthermore, all electrical components in this embodiment are electrically connected to the main controller and power supply. The main controller can be a conventional, known device such as a computer that performs control functions. Those skilled in the art can control the electrical components through simple programming, and the existing disclosed power connection technologies are common knowledge in the field. Therefore, this embodiment will not elaborate further on their specific structural composition and working principles.

[0037] It should be noted that the orientations or positional relationships indicated herein are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the purpose of facilitating the description of this application 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, and therefore should not be construed as a limitation of this application.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A nitrogen removal device suitable for high altitude and low pressure, comprising an installation platform (1), characterized in that: The top of the installation platform (1) is fixedly installed with a denitrification tank (2) and a preparation tank (3). The top of the denitrification tank (2) is fixedly installed with a connecting pipe (4). The connecting pipe (4) is fixedly connected to one side of the preparation tank (3). The inner wall of the denitrification tank (2) is fixedly installed with a spray pipe (5). The bottom of the spray pipe (5) is fixedly installed with a denitrification nozzle (6). The preparation tank (3) is equipped with a supplementary denitrification component. The supplementary denitrification assembly includes a preparatory pipe (7) fixedly installed on the inner wall of the preparatory tank (3), a preparatory nozzle (8) fixedly installed at the bottom of the preparatory pipe (7), the preparatory nozzle (8) being located above the connecting pipe (4), and a first exhaust gas concentration meter (9) fixedly installed at the top of the connecting pipe (4).

2. The nitrogen removal equipment suitable for high altitude and low pressure as described in claim 1, characterized in that: The top of the installation platform (1) is fixedly installed with a support rod (10), the top of the support rod (10) is fixedly installed with an installation top plate (11), the top of the installation top plate (11) is fixedly installed with two preparation tanks (12), the bottom of the preparation tanks (12) is fixedly installed with an output pipe (13), and the surface of the output pipe (13) is fixedly installed with an output valve (14).

3. A nitrogen removal device suitable for high altitude and low pressure as described in claim 2, characterized in that: An output pump (15) is fixedly installed on the top of the installation platform (1). One end of one of the output pipes (13) is connected to the input end of the output pump (15). A denitrification conveying pipe (16) is fixedly installed at the output end of the output pump (15). The denitrification conveying pipe (16) is connected to the spray pipe (5).

4. A nitrogen removal device suitable for high altitude and low pressure as described in claim 3, characterized in that: A preparatory pump (17) is fixedly installed on the top of the installation platform (1). One end of another output pipe (13) is connected to the input end of the preparatory pump (17). A preparatory delivery pipe (18) is fixedly installed on the output end of the preparatory pump (17). One end of the preparatory delivery pipe (18) is connected to the preparatory pipe (7).

5. A nitrogen removal device suitable for high altitude and low pressure according to claim 2, characterized in that: A stirring shaft (19) is rotatably mounted on the inner top wall of the preparation tank (12). Stirring blades (20) are fixedly mounted on the surface of the stirring shaft (19). A stirring motor (21) is fixedly mounted on the top of the preparation tank (12). The output shaft of the stirring motor (21) is fixedly connected to the top end of the stirring shaft (19).

6. A nitrogen removal device suitable for high altitude and low pressure as described in claim 5, characterized in that: The top of the preparation tank (12) is fixedly equipped with a feed pipe (22) and a dilution pipe (23), and the inner side wall of the preparation tank (12) is fixedly equipped with a solution concentration meter (24).

7. A nitrogen removal device suitable for high altitude and low pressure as described in claim 1, characterized in that: A waste gas inlet pipe (25) is fixedly installed on one side of the denitrification tank (2), a second waste gas concentration meter (251) is fixedly installed on the top of the waste gas inlet pipe (25), a first booster fan (26) is fixedly installed on the surface of the waste gas inlet pipe (25), and a second booster fan (27) is fixedly installed on the surface of the connecting pipe (4).

8. A nitrogen removal device suitable for high altitude and low pressure according to claim 1, characterized in that: The top of the preparation tank (3) is fixedly installed with a waste gas outlet pipe (28), and the bottom of both the denitrification tank (2) and the preparation tank (3) are fixedly installed with a drain pipe (29). A drain valve (30) is fixedly installed on the surface of the drain pipe (29), and a controller (31) is fixedly installed on the top of the installation platform (1).

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