A nitrogen oxide emission device with atomizing spray function

Abstract

The utility model discloses a nitrogen oxides emission device with atomization spraying function, including ammonia water jar, reaction box and SCR device, be provided with the shower nozzle on the reaction box, still include anti -evaporation device and rotation adjusting device, anti -evaporation device includes the breather valve, is connected with first pipeline and second pipeline on the breather valve, and the first pipeline lower extreme extension setting is in the inside upper end of ammonia water jar, and the second pipeline extension setting is in the inside bottom end of ammonia water jar, the shower nozzle is atomization shower nozzle, and the shower nozzle is rotatably installed on the reaction box through rotation adjusting device, and the shower nozzle is connected with the water suction pump, and the water suction pump is connected ammonia water jar, the reaction box includes the air inlet and the exhaust port, and the air inlet is connected with external nitrogen oxides emission equipment, and the exhaust port is connected with SCR device. The utility model discloses through rotatably installing the shower nozzle on the reaction box, and through rotation adjusting device can adjust the spraying direction of shower nozzle at random, to can according to actual working condition to the spraying direction and the flexible adjustment of spraying angle.

Description

Technical Field

[0001] This utility model relates to the field of cement production technology, specifically to a nitrogen oxide emission device with atomizing spray function. Background Technology

[0002] During cement production, a large amount of waste gas containing nitrogen oxides is generated at the kiln tail. With increasingly stringent environmental protection requirements, controlling nitrogen oxide emissions from the kiln tail has become crucial. Therefore, the waste gas must be treated to remove nitrogen oxides before it can be released.

[0003] In the prior art, utility model patent with patent number CN202021513017.4 discloses a nitrogen oxide treatment device, including a base plate, a cooling tower installed on the upper surface of the base plate, a spray tower installed on the upper end of the cooling tower, a tower head integrally connected to the upper end of the spray tower, an exhaust port connected to the upper end of the tower head, an air inlet connected to the left end of the spray tower, a cooling device installed on the left side of the cooling tower, and a spray device installed on the right side of the cooling tower. The structure is simple and the construction is clear and easy to understand. Nitrogen oxide gas enters from the air inlet, and a liquid pump draws out the spray liquid from the spray tower. The spray liquid flows along the vertical pipe, the liquid inlet pipe, and the horizontal pipe, and is sprayed out through the spray head to spray the gas. During this process, the cooling water between the water pump, the water tank, and the cooling coil circulates to cool the spray liquid, so that the gas can also be cooled during the spraying process.

[0004] The aforementioned patent provides a nitrogen oxide treatment device that sprays waste gas with spray heads. However, the spray head in this device cannot adjust the spray angle, making it difficult to accurately adjust the direction of ammonia spray and unable to make flexible adjustments according to actual working conditions. Further improvements are needed. Utility Model Content

[0005] The purpose of this invention is to provide a nitrogen oxide emission device with atomizing spray function, which aims to improve the problem that the spray head in the existing nitrogen oxide emission device cannot adjust the spray angle, making it difficult to accurately adjust the direction of ammonia spray.

[0006] This invention is implemented as follows: A nitrogen oxide emission device with atomizing spray function includes an ammonia tank, a reaction chamber, and an SCR device. The reaction chamber is equipped with a nozzle, and also includes an anti-volatilization device and a rotation adjustment device. The anti-volatilization device includes a breather valve, to which a first pipe and a second pipe are connected. The lower end of the first pipe extends into the upper part of the ammonia tank, and the second pipe extends into the lower part of the ammonia tank. The nozzle is an atomizing nozzle, which is rotatably mounted on the reaction chamber via the rotation adjustment device. The nozzle is connected to a water pump, which is connected to the ammonia tank. The reaction chamber includes an air inlet and an exhaust outlet. The air inlet is connected to an external nitrogen oxide emission device, and the exhaust outlet is connected to the SCR device.

[0007] Preferably, the ammonia tank includes a level display tube and an inlet pipe. The level display tube is provided on the side of the ammonia tank, and the inlet pipe is provided at the top. The upper end of the level display tube passes through the ammonia tank and connects to the upper interior of the ammonia tank, and the lower end passes through the ammonia tank and connects to the lower interior of the ammonia tank.

[0008] Preferably, the liquid level display tube is made of transparent material; and a switch valve is provided on the liquid inlet tube.

[0009] Preferably, the nozzle includes a pipe body, with a flow control valve at the upper end and a spray nozzle at the lower end; a spherical block is integrally formed on the pipe body, and the pipe body is rotatably mounted on the reaction chamber via the spherical block, with the spray nozzle located inside the reaction chamber; a water inlet connector is provided on the side of the pipe body outside the reaction chamber, and the water inlet connector is connected to a water pump.

[0010] Preferably, the nozzle further includes a flow meter, and the pipe body is provided with a flow meter for detecting the flow rate of the nozzle.

[0011] Preferably, the rotation adjustment device includes a rotating sleeve and a rotating ring. The rotating sleeve is installed on the outer end face of the reaction chamber, and the rotating ring is rotatably installed on the rotating sleeve and surrounds the nozzle. A connecting rod is rotatably installed on the rotating ring, and the end of the connecting rod away from the rotating ring is rotatably installed on the side of the nozzle tube. A limit rod is fixedly installed on the upper end face of the rotating ring, and a limit bolt is installed on the upper end of the limit rod extending above the rotating sleeve. The limit bolt abuts against the upper end face of the rotating sleeve.

[0012] Preferably, the connecting rod includes an intermediate rod and end rods, with end rods rotatably mounted at both ends of the intermediate rod via threads, and the connecting rods are rotatably mounted on corresponding rotating rings and tubes via the end rods at both ends.

[0013] Preferably, the reaction chamber further includes a drain port, and the lower end of the reaction chamber is provided with a drain port, and a switch valve is provided on the drain port.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model rotates and mounts the nozzle on the reaction chamber, and the spraying direction of the nozzle can be adjusted arbitrarily by means of a rotation adjustment device, so that the spraying direction and spraying angle can be flexibly adjusted according to the actual working conditions.

[0016] 2. This utility model, by setting a flow control valve and a flow meter on the nozzle, can control the spray flow rate of the nozzle through the flow control valve and reflect it intuitively through the flow meter.

[0017] 3. By installing an anti-volatilization device in the ammonia tank, this utility model can prevent the ammonia in the ammonia water from volatilizing and causing a decrease in the ammonia water concentration, thus ensuring that the waste gas containing nitrogen oxides can be treated effectively. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 This is a cross-sectional structural schematic diagram of the ammonia tank of this utility model;

[0020] Figure 3 This is a cross-sectional structural schematic diagram of the reaction chamber of this utility model;

[0021] Figure 4 This is a utility model Figure 1 Schematic diagram of the structure at point A;

[0022] Figure 5 This is a utility model Figure 3 Schematic diagram of the structure at point B;

[0023] Figure 6 This is a three-dimensional structural diagram of the nozzle of this utility model.

[0024] In the diagram: 1. Ammonia tank; 101. Liquid level display tube; 102. Inlet pipe; 2. Anti-volatile device; 201. Breathing valve; 202. First pipe; 203. Second pipe; 3. Water pump; 4. Nozzle; 401. Pipe body; 402. Spherical block; 403. Spray nozzle; 404. Flow control valve; 405. Inlet connector; 406. Flow meter; 5. Rotation adjustment device; 501. Rotating sleeve; 502. Rotating ring; 503. Limiting rod; 504. Limiting bolt; 505. Connecting rod; 506. Intermediate rod; 507. End rod; 6. Reaction chamber; 601. Air inlet; 602. Exhaust outlet; 603. Liquid outlet; 7. SCR device. Detailed implementation method:

[0025] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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 or an electrical connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details:

[0027] Example 1

[0028] like Figure 1 and Figure 2 As shown, a nitrogen oxide emission device with atomizing spray function includes an ammonia tank 1, a reaction chamber 6, and an SCR device 7. The SCR device is short for Selective Catalytic Reduction, an existing device that can reduce nitrogen oxide emissions in exhaust gas. The reaction chamber 6 is equipped with nozzles 4, and also includes an anti-volatilization device 2 and a rotation adjustment device 5. The ammonia tank 1 includes a level display tube 101 and an inlet pipe 102. The level display tube 101 is located on the side of the ammonia tank 1, and the inlet pipe 102 is located at the top. The upper end of the level display tube 101 penetrates the ammonia tank 1, connecting to the upper interior of the ammonia tank 1, and the lower end penetrates the ammonia tank 1, connecting to the lower interior of the ammonia tank 1. The level display tube 101 connects to the upper and lower ends of the ammonia tank 1, respectively, ensuring that the air pressure inside the ammonia tank 1 and the level display tube 101 are the same. Therefore, the actual liquid level inside the ammonia tank 1 and the liquid level inside the level display tube 101 will also be at the same height. The level display tube 101 is made of transparent material, allowing staff to easily observe the remaining ammonia level inside the ammonia tank 1. A switch valve is installed on the inlet pipe 102. The inlet pipe 102 is used to replenish ammonia into the ammonia tank 1. The switch valve allows for opening and closing of the inlet pipe 102 to prevent ammonia leakage. The anti-evaporation device 2 includes a breather valve 201, to which a first pipe 202 and a second pipe 203 are connected. The lower end of the first pipe 202 extends into the upper part of the ammonia tank 1, and the second pipe 203 extends into the lower part of the ammonia tank 1. When ammonia gas evaporates from inside the ammonia tank 1, the gas pressure inside the ammonia tank 1 will increase, thereby opening the valve of the breather valve 201, allowing the ammonia gas to pass through the first pipe 202 to the second pipe 203 and re-enter the ammonia water. Since ammonia gas is highly soluble in water, the evaporated ammonia gas can be re-dissolved in the ammonia water, preventing the ammonia concentration from decreasing and resulting in unsatisfactory treatment effects.

[0029] like Figure 1 and Figure 3As shown, nozzle 4 is an atomizing nozzle, which is rotatably mounted on reaction chamber 6 via a rotating adjustment device 5. Nozzle 4 is connected to a water pump 3, which is connected to ammonia tank 1. Reaction chamber 6 includes an air inlet 601 and an exhaust outlet 602. Air inlet 601 is connected to an external nitrogen oxide emission device, and exhaust outlet 602 is connected to an SCR device 7. The reaction chamber also includes a drain outlet, located at the lower end of the chamber, with a switch valve installed on the outlet. The water pump 3 draws ammonia into nozzle 4, which atomizes and sprays it into reaction chamber 6, spraying the nitrogen oxides inside. After the nitrogen oxides inside reaction chamber 6 have completed their reaction, they enter the SCR device 7 through exhaust outlet 602 for secondary treatment of any remaining nitrogen oxides, ensuring a good treatment effect. Reaction chamber 6 also includes a drain outlet 603, located at the lower end of the chamber, with a switch valve installed on the drain outlet 603. When too much atomized ammonia water accumulates inside the reaction chamber 6, some of the unreacted atomized ammonia water will liquefy and remain at the bottom of the reaction chamber 6. It can be discharged through the drain port 603. Additives can be added to the ammonia water to make it colorimetric, which makes it easier to determine the remaining amount of ammonia.

[0030] like Figure 2 and Figure 6 As shown, the nozzle 4 includes a pipe body 401, with a flow control valve 404 at the upper end and a spray nozzle 403 at the lower end. A spherical block 402 is integrally formed on the pipe body 401, allowing the pipe body 401 to be rotatably mounted on the reaction chamber 6 via the spherical block 402. The spray nozzle 403 is located inside the reaction chamber 6. The rotatable mounting of the pipe body 401 on the reaction chamber 6 via the spherical block 402 allows for multi-angle rotation of the pipe body 401, facilitating adjustment of the spray direction of the spray nozzle 403. A water inlet connector 405 is located on the side of the pipe body 401 outside the reaction chamber 6, connecting to a water pump 3. The nozzle 4 also includes a flow meter 406, which is mounted on the pipe body 401 to detect the flow rate of the nozzle 4. By setting the flow control valve 404, the flow rate of ammonia water through the pipe body 401 can be controlled, thereby controlling the spray volume of the spray nozzle 403. The flow meter 406 is set on the pipe body 401 and located below the flow control valve 404, which facilitates real-time detection of the flow rate inside the pipe body 401 after being regulated by the flow control valve 404.

[0031] like Figure 4 and Figure 5As shown, the rotation adjustment device 5 includes a rotating sleeve 501 and a rotating ring 502. The rotating sleeve 501 is installed on the outer end face of the reaction chamber 6, and the rotating ring 502 is rotatably installed on the rotating sleeve 501 and surrounds the nozzle 4. A connecting rod 505 is rotatably mounted on the rotating ring 502, and one end of the connecting rod 505 away from the rotating ring 502 is rotatably installed on the side of the tube body 401 of the nozzle 4. A limiting rod 503 is fixedly installed on the upper end face of the rotating ring 502, and a limiting bolt 504 is installed above the rotating sleeve 501 at the upper end of the limiting rod 503. The limiting bolt 504 abuts against the upper end face of the rotating sleeve 501. The connecting rod 505 includes a middle rod 506 and an end rod 507. The two ends of the middle rod 506 are respectively rotatably mounted with end rods 507 by threads, and the connecting rod 505 is rotatably mounted on the corresponding rotating ring 502 and tube body 401 by the end rods 507 at both ends. During the rotation of the rotating ring 502, the nozzle 4 can be rotated by the connecting rod 505, thereby adjusting the spraying direction of the nozzle 4. At the same time, the connecting rod 505 can be lengthened by rotating the intermediate rod 506, which in turn drives the end rods 507 at both ends to move outward through the thread, or shorten the connecting rod 505 by causing the end rods 507 at both ends to retract inward. This allows for adjustment of the length of the connecting rod 505, thereby adjusting the tilt angle of the nozzle 4 and allowing for adjustment of the spraying angle of the nozzle 4.

[0032] Example 2

[0033] like Figure 1 , Figure 2 and Figure 3As shown, a nitrogen oxide emission device with atomizing spray function includes an ammonia tank 1, a reaction chamber 6, and an SCR device 7. The reaction chamber 6 is equipped with a nozzle 4, and also includes an anti-volatilization device 2 and a rotation adjustment device 5. The ammonia tank 1 includes a level display tube 101 and an inlet pipe 102. The level display tube 101 is located on the side of the ammonia tank 1, and the inlet pipe 102 is located at the top. The upper end of the level display tube 101 penetrates the ammonia tank 1, connecting to the upper interior of the ammonia tank 1, and the lower end penetrates the ammonia tank 1, connecting to the lower interior of the ammonia tank 1. The level display tube 101 is made of transparent material. A switch valve is installed on the inlet pipe 102. The anti-volatile device 2 includes a breather valve 201, to which a first pipe 202 and a second pipe 203 are connected. The lower end of the first pipe 202 extends into the upper part of the ammonia tank 1, and the second pipe 203 extends into the lower part of the ammonia tank 1. The nozzle 4 is an atomizing nozzle, rotatably mounted on the reaction chamber 6 via a rotating adjustment device 5. The nozzle 4 is connected to a water pump 3, which is connected to the ammonia tank 1. The reaction chamber 6 includes an air inlet 601 and an exhaust outlet 602. The air inlet 601 is connected to an external nitrogen oxide emission device, and the exhaust outlet 602 is connected to an SCR device 7. The reaction chamber also includes a drain outlet, located at the lower end of the reaction chamber, with a switch valve installed on the drain outlet. The reaction chamber 6 also includes a drain outlet 603, located at the lower end of the reaction chamber, with a switch valve installed on the drain outlet 603.

[0034] like Figure 2 and Figure 6 As shown, the nozzle 4 includes a pipe body 401, with a flow control valve 404 at the upper end and a spray nozzle 403 at the lower end. A spherical block 402 is integrally formed on the pipe body 401, and the pipe body 401 is rotatably mounted on the reaction chamber 6 via the spherical block 402. The spray nozzle 403 is located inside the reaction chamber 6. A water inlet connector 405 is located on the side of the pipe body 401 outside the reaction chamber 6, and the water inlet connector 405 is connected to a water pump 3. The nozzle 4 also includes a flow meter 406, which is installed on the pipe body 401 to detect the flow rate of the nozzle 4.

[0035] like Figure 4 and Figure 5As shown, the rotation adjustment device 5 includes a rotating sleeve 501 and a rotating ring 502. The rotating sleeve 501 is installed on the outer end face of the reaction chamber 6, and the rotating ring 502 is rotatably installed on the rotating sleeve 501 and surrounds the nozzle 4. A connecting rod 505 is rotatably mounted on the rotating ring 502, and one end of the connecting rod 505 away from the rotating ring 502 is rotatably installed on the side of the tube body 401 of the nozzle 4. A limiting rod 503 is fixedly installed on the upper end face of the rotating ring 502, and a limiting bolt 504 is installed above the rotating sleeve 501 at the upper end of the limiting rod 503. The limiting bolt 504 abuts against the upper end face of the rotating sleeve 501. The connecting rod 505 includes a middle rod 506 and an end rod 507. The two ends of the middle rod 506 are respectively rotatably mounted with end rods 507 by threads, and the connecting rod 505 is rotatably mounted on the corresponding rotating ring 502 and tube body 401 by the end rods 507 at both ends.

[0036] The working principle of this utility model is as follows: When using this device, ammonia water is pumped into the nozzle 4 by the water pump 3, and then sprayed into the reaction tank 6 through the nozzle 4. When it is necessary to adjust the spraying direction of the nozzle 4, first adjust the length of the connecting rod 505 by rotating the middle rod 506 of the connecting rod 505 to adjust the tilt angle of the nozzle 4. Then rotate the rotating ring 502 to drive the nozzle 4 to rotate, thereby realizing arbitrary adjustment of the spraying direction of the nozzle 4. After the adjustment is completed, the locking limit bolt 504 can be tightened to make it abut against the rotating sleeve 501 to restrict the rotation. Ring 502 rotates. After nitrogen oxides are treated once by spraying ammonia water inside the reaction tank 6, the gas is then treated a second time through the SCR device 7. During use, the remaining amount of ammonia water inside the ammonia water tank 1 can be observed in time through the liquid level display tube 101 on the ammonia water tank 1. At the same time, when the ammonia water inside the ammonia water tank 1 evaporates, the gas pressure inside the ammonia water tank 1 can be increased by ammonia gas, thereby driving the breather valve 201 to open, and the ammonia gas is redissolved into the ammonia water through the first pipe 202 and the second pipe 203, thus ensuring that the concentration of ammonia water does not change too much.

[0037] In summary, this utility model rotatably mounts the nozzle 4 onto the reaction chamber 6, and the spraying direction of the nozzle 4 can be arbitrarily adjusted by the rotation adjustment device 5, thus allowing for flexible adjustment of the spraying direction and angle according to actual working conditions. By setting a flow control valve 404 and a flow meter 406 on the nozzle 4, the spraying flow rate of the nozzle 4 can be controlled by the leakage flow control valve 404, and the flow meter 406 can visually reflect the flow rate. By setting an anti-volatilization device 2 in the ammonia tank 1, the volatilization of ammonia in the ammonia water can be prevented from causing a decrease in the ammonia water concentration, ensuring that the waste gas containing nitrogen oxides can be treated effectively.

[0038] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A nitrogen oxide emission device with atomizing spray function, comprising an ammonia water tank (1), a reaction box (6) and an SCR device (7), a spray head (4) is arranged on the reaction box (6), characterized in that, It also includes an anti-volatilization device (2) and a rotation adjustment device (5); the anti-volatilization device (2) includes a breather valve (201), the breather valve (201) is connected to a first pipe (202) and a second pipe (203), the lower end of the first pipe (202) extends into the upper part of the ammonia tank (1), and the second pipe (203) extends into the lower part of the ammonia tank (1); the nozzle (4) is an atomizing nozzle, the nozzle (4) is rotatably mounted on the reaction chamber (6) by the rotation adjustment device (5), the nozzle (4) is connected to a water pump (3), and the water pump (3) is connected to the ammonia tank (1); the reaction chamber (6) includes an air inlet (601) and an exhaust port (602), the air inlet (601) is connected to an external nitrogen oxide emission device, and the exhaust port (602) is connected to an SCR device (7).

2. The nitrogen oxide emission device with atomizing spray function according to claim 1, characterized in that, The ammonia tank (1) includes a level display tube (101) and an inlet pipe (102). The level display tube (101) is provided on the side of the ammonia tank (1), and the inlet pipe (102) is provided at the top. The upper end of the level display tube (101) passes through the ammonia tank (1) and connects to the upper interior of the ammonia tank (1), and the lower end passes through the ammonia tank (1) and connects to the lower interior of the ammonia tank (1).

3. The nitrogen oxide emission device with atomizing spray function according to claim 2, characterized in that, The liquid level display tube (101) is made of transparent material; the liquid inlet tube (102) is equipped with a switch valve.

4. The nitrogen oxide emission device with atomizing spray function according to claim 1, characterized in that, The nozzle (4) includes a pipe body (401), the upper end of which is provided with a flow control valve (404), and the lower end of which is provided with a water nozzle (403); a spherical block (402) is integrally constructed on the pipe body (401), and the pipe body (401) is rotatably mounted on the reaction tank (6) through the spherical block (402), and the water nozzle (403) is located inside the reaction tank (6); a water inlet connector (405) is provided on the side of the pipe body (401) located outside the reaction tank (6), and the water inlet connector (405) is connected to a water pump (3).

5. The nitrogen oxide emission device with atomizing spray function according to claim 4, characterized in that, The nozzle (4) also includes a flow meter (406), and the pipe body (401) is provided with a flow meter (406) for detecting the flow rate of the nozzle (4).

6. The nitrogen oxide emission device with atomizing spray function according to claim 4, characterized in that, The rotation adjustment device (5) includes a rotating sleeve (501) and a rotating ring (502). The rotating sleeve (501) is installed on the outer end face of the reaction tank (6). The rotating ring (502) is rotatably installed on the rotating sleeve (501) and surrounds the nozzle (4). A connecting rod (505) is rotatably installed on the rotating ring (502). One end of the connecting rod (505) away from the rotating ring (502) is rotatably installed on the side of the tube body (401) of the nozzle (4). A limiting rod (503) is fixedly installed on the upper end face of the rotating ring (502). The upper end of the limiting rod (503) extends to the top of the rotating sleeve (501) and is provided with a limiting bolt (504). The limiting bolt (504) abuts against the upper end face of the rotating sleeve (501).

7. The nitrogen oxide emission device with atomizing spray function according to claim 6, characterized in that The connecting rod (505) includes an intermediate rod (506) and an end rod (507). The two ends of the intermediate rod (506) are respectively threaded and rotatably mounted with end rods (507). The connecting rod (505) is rotatably mounted on the corresponding rotating ring (502) and the tube body (401) through the end rods (507) at both ends.

8. The nitrogen oxide emission device with atomizing spray function according to claim 1, characterized in that, The reaction chamber (6) also includes a drain port (603), and the lower end of the reaction chamber (6) is provided with a drain port (603), and a switch valve is provided on the drain port (603).

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