Flue gas denitration ammonia spraying device

Abstract

The utility model discloses a flue gas denitration ammonia spraying device which comprises a denitration treatment box, an ammonia water vaporization box and a gas inlet pipe, a fixed bottom column is arranged at the middle position, close to the bottom, of the denitration treatment box, and a plurality of ammonia spraying boxes are arranged on the top of the fixed bottom column at equal intervals. A plurality of groups of connecting blocks are arranged at the two ends of the ammonia spraying box, an ammonia spraying pipe is arranged at one end of each connecting block, a plurality of nozzles are uniformly distributed on each ammonia spraying pipe, a transmission gear is arranged at the other end, opposite to the ammonia spraying pipe, of each connecting block, a plurality of groups of fixing blocks are arranged on the inner wall of the ammonia spraying box, and a transmission toothed plate is arranged between each group of fixing blocks; a synchronous bottom plate is arranged between the ends, close to the bottom, of the transmission toothed plates. According to the utility model, the transmission toothed plate, the transmission gear and other parts are matched for use, so that the spraying direction of the spray head can be conveniently changed, ammonia gas can be conveniently and quickly dispersed everywhere in the denitration treatment box, and subsequent mixing treatment is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of flue gas treatment technology, specifically to a flue gas denitrification and ammonia injection device. Background Technology

[0002] In the process of treating flue gas pollutants, denitrification devices are needed to filter harmful substances in the flue gas, ensuring that nitrogen oxides in the flue gas meet emission standards. Currently, traditional denitrification ammonia injection uses liquid ammonia vaporization, while a newer method of vaporizing ammonia water, diluting it with heated air, and then injecting ammonia is becoming widely used. This method is safe and reliable, and is especially suitable for applications with high explosion-proof requirements in the petrochemical industry.

[0003] Existing flue gas denitrification ammonia injection devices have the following drawbacks:

[0004] 1. In existing denitrification ammonia injection equipment, the ammonia injection nozzles are located in a single and fixed position. During the treatment process, the ammonia cannot be well dispersed inside the treatment chamber, and the mixing with the flue gas is time-consuming, thus affecting the efficiency and effectiveness of the treatment.

[0005] 2. When the existing flue gas enters the denitrification ammonia injection equipment, it is very easy for it to accumulate in a certain place in the treatment box and cannot be dispersed. The center of the flue gas is not easy to contact and mix with the ammonia, resulting in insufficient flue gas treatment effect.

[0006] Therefore, a solution is needed. Utility Model Content

[0007] (a) Technical problems to be solved

[0008] To address the shortcomings of existing technologies, this utility model provides a flue gas denitrification ammonia injection device to solve the problems mentioned in the background art.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, this utility model provides the following technical solution: a flue gas denitrification ammonia injection device, comprising a denitrification treatment box, an ammonia vaporization box, and an inlet pipe. The denitrification treatment box has a fixed base column located near the center of the bottom. Several ammonia injection boxes are evenly spaced on the top of the fixed base column. Several sets of connecting blocks are provided at both ends of each ammonia injection box. An ammonia injection pipe is provided at one end of each connecting block. Several nozzles are evenly arranged on the ammonia injection pipe. The connecting block has a... The ammonia injection box has a transmission gear, and several sets of fixed blocks are provided on the inner wall of the ammonia injection box. A transmission gear plate is provided between each set of fixed blocks. A synchronous base plate is provided between the transmission gear plates near the bottom. Two guide rods are symmetrically arranged between the synchronous base plate and the ammonia injection box. An adjusting screw is provided between the middle position of the synchronous base plate and the ammonia injection box. A drive box is provided at the bottom of the adjusting screw. A connecting pipe is provided in the middle position near the top of the ammonia injection box. Several connecting gas pipes are installed in the connecting pipe.

[0011] The denitrification treatment box has a fixed plate inside near the top end. A dispersion column is set at the top center of the fixed plate. Several guide grooves are evenly arranged on the top of the fixed plate. Several air guide holes are evenly arranged on the fixed plate at the positions of the guide grooves.

[0012] Preferably, a support frame is installed on the bottom of the denitrification treatment box, a filter assembly is provided in the denitrification treatment box at the position between the fixed plate and the ammonia injection box, a pump box is provided between the ammonia vaporization box and the denitrification treatment box, the pump box is connected to the connecting air pipe, and one end of the air inlet pipe is connected to the middle position of the top of the denitrification treatment box.

[0013] Preferably, an inspection door is installed on the outside of the denitrification treatment box, the two sides of the ammonia injection box are fixedly connected to the inner wall of the denitrification treatment box, a single set of connecting blocks are on the same vertical line, the cross-section of the connecting block is in the shape of an "I" and is rotatably connected to the ammonia injection box, and the ammonia injection pipes at different positions are inclined at different angles.

[0014] Preferably, the transmission gear meshes with the toothed side of the transmission gear plate, the transmission gear plate and the fixed block are slidably connected, and the synchronous base plate is provided with a guide hole for use with the guide rod and a threaded hole for use with the adjusting screw.

[0015] Preferably, the adjusting screw is rotatably connected to the ammonia injection box, the drive box is fixed inside the bottom of the ammonia injection box, the drive end of the drive box is connected to the adjusting screw, and one end of the connecting air pipe is connected to the nozzle.

[0016] Preferably, the outer edge of the fixing plate is fixedly connected to the inner wall of the denitrification treatment box, the top of the dispersion column and the ammonia injection box are both arc-shaped, the guide groove is arc-shaped concave, and the air guide holes at each position are distributed in a ring shape.

[0017] (III) Beneficial Effects

[0018] This utility model provides a flue gas denitrification ammonia injection device. It has the following beneficial effects:

[0019] This flue gas denitrification ammonia injection device allows for convenient adjustment of the nozzle position and angle. As ammonia enters and exits through the nozzle, a synchronous base plate drives the transmission gear column to move, which in turn, in conjunction with the transmission gear, rotates the ammonia injection pipe, thereby changing the injection direction of the nozzle. Through the coordinated use of multiple nozzles, ammonia can be quickly dispersed throughout the denitrification treatment chamber, facilitating thorough mixing with the flue gas. Simultaneously, when the flue gas enters the denitrification treatment chamber, it is dispersed by the dispersion column and guide channel, preventing clumping and ensuring effective mixing of the flue gas and ammonia, thus guaranteeing the denitrification treatment effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the ammonia injection box described in this utility model;

[0022] Figure 3 This is a schematic diagram of the transmission gear plate described in this utility model;

[0023] Figure 4 This is a schematic diagram of the fixing plate described in this utility model.

[0024] In the diagram: Guide rod 1-1, transmission gear plate 2, nozzle 3, ammonia injection pipe 4, synchronous base plate 5, ammonia injection box 6, drive box 7, transmission gear 8, connecting block 9, adjusting screw 10, connecting air pipe 11, connecting pipe 12, fixing block 13, denitrification treatment box 14, fixing base column 15, filter assembly 16, fixing plate 17, inspection door 18, air inlet pipe 19, pump box 20, dispersion column 21, air guide hole 22, guide groove 23, ammonia vaporization box 24. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1-4 This utility model provides a technical solution:

[0027] Example 1

[0028] Regarding the aforementioned problem 1: In existing denitrification ammonia injection equipment, the ammonia injection nozzles are located in a single and fixed position. During the treatment process, the ammonia cannot be well dispersed inside the treatment chamber, and the mixing with the flue gas is time-consuming, thus affecting the efficiency and effectiveness of the treatment.

[0029] The solution is as follows: A flue gas denitrification ammonia injection device includes a denitrification treatment box 14, an ammonia vaporization box 24, and an inlet pipe 19. A fixed base column 15 is located near the center of the bottom of the denitrification treatment box 14. Several ammonia injection boxes 6 are evenly spaced on the top of the fixed base column 15. Several sets of connecting blocks 9 are located at both ends of each ammonia injection box 6. An ammonia injection pipe 4 is located at one end of each connecting block 9. Several nozzles 3 are evenly arranged on the ammonia injection pipe 4. A transmission gear 8 is located at the other end of the connecting block 9 opposite to the ammonia injection pipe 4. Several sets of fixed blocks 13 are located on the inner wall of the ammonia injection box 6. A transmission gear plate 2 is located between each set of fixed blocks 13. A synchronous base plate 5 is located between the transmission gear plates 2 near the bottom. The synchronous base plate 5 is symmetrically positioned with respect to the ammonia injection box 6. Two guide rods 1 are provided. An adjusting screw 10 is provided between the middle position of the synchronous base plate 5 and the ammonia injection box 6. A drive box 7 is provided at the bottom of the adjusting screw 10. A connecting pipe 12 is provided at the middle position near the top of the ammonia injection box 6. Several connecting gas pipes 11 are installed in the connecting pipe 12. Specifically, ammonia gas enters the connecting gas pipes 11 through the pump gas box 20 and is sprayed into the denitrification treatment box 14 through the nozzles 13 at various positions. Simultaneously, the movement of the synchronous base plate 5 drives the movement of the transmission gear plate 2, which in turn cooperates with the transmission gear 8 to realize the rotation of the connecting block 9, thereby realizing the rotation of the ammonia injection pipe 4, realizing the change of the spray direction of the nozzle, and can quickly disperse the ammonia gas in various parts of the denitrification treatment box 14 for convenient subsequent mixing treatment.

[0030] The denitrification treatment box 14 has a fixed plate 17 inside near the top end. A dispersion column 21 is set at the top center of the fixed plate 17. Several guide grooves 23 are evenly arranged on the top of the fixed plate 17. Several air guide holes 22 are evenly arranged on the fixed plate 17 at the position of the guide grooves 23.

[0031] Furthermore, a support frame is installed on the bottom of the denitrification treatment box 14, and a filter assembly 16 is installed in the denitrification treatment box 14 at the position between the fixed plate 17 and the ammonia injection box 6. A pump box 20 is installed between the ammonia vaporization box 24 and the denitrification treatment box 14. The pump box 20 is connected to the connecting air pipe 11, and one end of the air inlet pipe 19 is connected to the middle position of the top of the denitrification treatment box 14.

[0032] Furthermore, an inspection door 18 is installed on the outside of the denitrification treatment box 14, the two sides of the ammonia injection box 6 are fixedly connected to the inner wall of the denitrification treatment box 14, a single set of connecting blocks 9 are on the same vertical line, the cross-section of the connecting block 9 is in the shape of an "I" and is rotatably connected to the ammonia injection box 6, and the ammonia injection pipes 4 at different positions are inclined at different angles.

[0033] Furthermore, the transmission gear 8 meshes with the toothed side of the transmission gear plate 2, and the transmission gear plate 2 and the fixed block 13 are slidably connected. The synchronous base plate 5 is provided with a guide hole for use with the guide rod 1 and a threaded hole for use with the adjusting screw 10.

[0034] Furthermore, the adjusting screw 10 is rotatably connected to the ammonia injection box 6, the drive box 7 is fixed inside the bottom of the ammonia injection box 6, the drive end of the drive box 7 is connected to the adjusting screw 10, and one end of the connecting air pipe 11 is connected to the nozzle 3.

[0035] Furthermore, the outer edge of the fixing plate 17 is fixedly connected to the inner wall of the denitrification treatment box 14, the top of the dispersion column 21 and the ammonia injection box 6 are both arc-shaped, the guide channel 23 is arc-shaped, and the air guide holes 22 at each position are distributed in a ring shape.

[0036] Example 2

[0037] Regarding the second problem to be solved above: When the existing flue gas enters the denitrification ammonia injection equipment, it is very easy for it to accumulate in a certain place in the treatment box and cannot be dispersed. The center of the flue gas is not easy to contact and mix with the ammonia, resulting in insufficient flue gas treatment effect.

[0038] The solution is as follows: The flue gas enters the interior of the denitrification treatment box 14 through the inlet pipe 19. The flue gas first comes into contact with the dispersion column 21 and undergoes preliminary dispersion. Then, the flue gas is gradually guided to the air guide holes 22 at various positions through the guide channel 23, and passes through the fixed plate 17 to enter the filter assembly 16. This can prevent the flue gas from accumulating and affecting the subsequent mixing and treatment with ammonia.

[0039] Working principle: During operation, ammonia water first enters the ammonia water vaporization box 24 for vaporization treatment. Then, the ammonia gas enters the connecting gas pipe 11 through the pump box 20 and is sprayed out by the nozzles 3 at various positions. Simultaneously, the drive box 7 drives the adjusting screw 10 to rotate. With the threaded connection with the synchronous base plate 5, it can drive the transmission gear plates 2 on both sides to move. The forward and reverse rotation of the drive box 7 can realize the reciprocating up and down movement of the transmission gear plates 2. The transmission gear plates 2, in conjunction with the transmission gear 8, can drive the connecting block 9 to rotate, that is, realize the rotation of the ammonia injection pipe 4, so that the direction of the nozzles 3 is changed, thereby better dispersing the ammonia gas in various places in the denitrification treatment box 14. Subsequently, the flue gas enters the interior of the denitrification treatment box 14 through the air inlet pipe 19 and is initially dispersed by the dispersion column 21. Further, it is guided to the air guide hole 22 through the guide groove 23 and enters the filter assembly 16. It then gradually passes through the ammonia injection box 6 and mixes with the ammonia gas to ensure the denitrification effect.

[0040] The components of this utility model, including guide rod 1-1, transmission gear plate 2, nozzle 3, ammonia injection pipe 4, synchronous base plate 5, ammonia injection box 6, drive box 7, transmission gear 8, connecting block 9, adjusting screw 10, connecting air pipe 11, connecting pipe 12, fixing block 13, denitrification treatment box 14, fixing base column 15, filter assembly 16, fixing plate 17, inspection door 18, air inlet pipe 19, pump box 20, dispersion column 21, air guide hole 22, flow guide groove 23, and ammonia vaporization box 24, are all general standard parts or parts known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. The problem solved by this utility model is that in existing denitrification ammonia injection equipment, the position of the ammonia injection nozzle is singular. Once fixed, the ammonia cannot be well dispersed inside the treatment chamber during the treatment process, and the mixing with the flue gas is time-consuming, thus affecting the efficiency and effect of the treatment. This utility model can easily change the position and angle of the nozzle 3 through the combination of the above-mentioned components. When ammonia enters and is sprayed out by the nozzle 3, the drive box, in conjunction with the adjusting screw, drives the synchronous base plate to move, further realizing the movement of the transmission gear column. In conjunction with the transmission gear, the ammonia spray pipe is rotated, changing the spray direction of the nozzle. This can quickly disperse the ammonia in various parts of the denitrification treatment chamber, facilitating thorough mixing with the flue gas. At the same time, when the flue gas enters the denitrification treatment chamber, it can be dispersed by the dispersion column and the guide channel, avoiding accumulation into clumps, ensuring the mixing effect of flue gas and ammonia, and thus ensuring the denitrification effect.

[0041] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0042] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A flue gas denitrification ammonia injection device, characterized in that: The system includes a denitrification treatment box (14), an ammonia vaporization box (24), and an air inlet pipe (19). The denitrification treatment box (14) has a fixed base column (15) located near the center of the bottom. Several ammonia injection boxes (6) are evenly spaced on the top of the fixed base column (15). Several sets of connecting blocks (9) are provided at both ends of each ammonia injection box (6). An ammonia injection pipe (4) is provided at one end of each connecting block (9). Several nozzles (3) are evenly arranged on the ammonia injection pipe (4). A transmission gear (8) is provided at the other end of each connecting block (9) opposite to the ammonia injection pipe (4). Several... A dry group fixing block (13) is provided with a transmission toothed plate (2) between the fixing blocks (13) in a single group. A synchronous base plate (5) is provided between the transmission toothed plates (2) near the bottom end. Two guide rods (1) are symmetrically arranged on the synchronous base plate (5) and the ammonia injection box (6). An adjusting screw (10) is provided between the middle position of the synchronous base plate (5) and the ammonia injection box (6). A drive box (7) is provided at the bottom of the adjusting screw (10). A connecting pipe (12) is provided in the middle position near the top end of the ammonia injection box (6). Several connecting gas pipes (11) are installed in the connecting pipe (12). The denitrification treatment box (14) has a fixed plate (17) inside near the top end. A dispersion column (21) is provided at the middle of the top of the fixed plate (17). Several guide grooves (23) are evenly arranged on the top of the fixed plate (17). Several air guide holes (22) are evenly arranged on the fixed plate (17) at the position of the guide grooves (23).

2. The flue gas denitrification ammonia injection device according to claim 1, characterized in that: A support frame is installed on the bottom of the denitrification treatment box (14). A filter assembly (16) is provided in the denitrification treatment box (14) between the fixed plate (17) and the ammonia injection box (6). A pump box (20) is provided between the ammonia vaporization box (24) and the denitrification treatment box (14). The pump box (20) is connected to the connecting gas pipe (11). One end of the air inlet pipe (19) is connected to the middle of the top of the denitrification treatment box (14).

3. The flue gas denitrification ammonia injection device according to claim 1, characterized in that: An inspection door (18) is installed on the outside of the denitrification treatment box (14). The two sides of the ammonia injection box (6) are fixedly connected to the inner wall of the denitrification treatment box (14). A single set of connecting blocks (9) are on the same vertical line. The cross-section of the connecting block (9) is in the shape of an "I" and is rotatably connected to the ammonia injection box (6). The ammonia injection pipes (4) at different positions are inclined at different angles.

4. The flue gas denitrification ammonia injection device according to claim 1, characterized in that: The transmission gear (8) meshes with the toothed side of the transmission gear plate (2), and the transmission gear plate (2) and the fixed block (13) are slidably connected. The synchronous base plate (5) is provided with a guide hole for use with the guide rod (1) and a threaded hole for use with the adjusting screw (10).

5. The flue gas denitrification ammonia injection device according to claim 1, characterized in that: The adjusting screw (10) is rotatably connected to the ammonia injection box (6), the drive box (7) is fixed inside the bottom of the ammonia injection box (6), the drive end of the drive box (7) is connected to the adjusting screw (10), and one end of the connecting air pipe (11) is connected to the nozzle (3).

6. The flue gas denitrification ammonia injection device according to claim 1, characterized in that: The outer edge of the fixed plate (17) is fixedly connected to the inner wall of the denitrification treatment box (14). The top of the dispersion column (21) and the ammonia injection box (6) are both arc-shaped structures. The guide groove (23) is an arc-shaped concave structure. The air guide holes (22) at each position are distributed in a ring shape.

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