Tail gas denitration device of gas generator set

Abstract

The invention relates to the technical field of tail gas denitration equipment, and discloses a gas generator set tail gas denitration device which comprises a supporting seat frame, a reaction chamber is arranged at the top of the supporting seat frame, an exhaust pipe and a mixing pipe are connected to the two sides of the reaction chamber respectively, an expansion joint is connected to the side, close to the reaction chamber, of the mixing pipe, and a set of frame bodies are arranged at the bottom of the mixing pipe; the mixing pipe is communicated with the interior of the expansion joint, a first filter plate, a second filter plate, a third filter plate and a fourth filter plate are sequentially arranged in the mixing pipe and the expansion joint from right to left, and a circulating mechanism is arranged between the second filter plate and the third filter plate; the circulating mechanism comprises a first inner cylinder, a second inner cylinder is arranged in the first inner cylinder, a third inner cylinder is arranged in the second inner cylinder, and a power compression part is arranged in the third inner cylinder; a first gear is arranged at the center of the side, corresponding to the third filter plate, of the second filter plate, and a second gear meshed with the first gear is arranged on one side of the first gear. The device has the beneficial effects that denitration can be efficiently and continuously carried out, potential safety hazards can be eliminated, and the denitration stability is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of tail gas denitration equipment, and in particular to a tail gas denitration device for a gas-fired generator set. Background Art

[0002] Gas-fired generators generate large amounts of nitrogen oxides during operation. Nitrogen oxides are one of the main pollutants causing atmospheric pollution. They contribute to environmental problems such as acid rain, the greenhouse effect, and ozone layer depletion, posing a serious threat to human survival. Therefore, denitrification of gas-fired generator exhaust is a crucial step in exhaust emission treatment.

[0003] Before the exhaust gas generated in the existing process enters the reaction chamber, the temperature of the exhaust gas will be affected by other factors and cannot be maintained at a high temperature throughout the entire output process, making it difficult for the exhaust gas to reach the predetermined conversion efficiency in the second half of the denitrification device, and a large amount of by-product ammonia salts will be produced. The ammonia salts will adhere to the air flow pipes inside the denitrification device, thereby affecting the operation of the entire denitrification device and making it difficult for the denitrification device to maintain high efficiency and high stability for a long time; at the very least, it will cause irreversible damage to the denitrification device, and at worst, pipeline blockage and leakage will occur, bringing immeasurable losses to the company. Summary of the Invention

[0004] The technical task of the present invention is to provide a gas-fired generator set exhaust gas denitrification device to solve the above problems.

[0005] The technical solution of the present invention is achieved as follows:

[0006] A gas generator set exhaust denitrification device includes a support frame, a reaction chamber is provided on the top of the support frame, an exhaust pipe and a mixing pipe are connected to both sides of the reaction chamber, an expansion joint is connected to the side of the mixing pipe close to the reaction chamber, and a group of frames are provided at the bottom of the mixing pipe; the mixing pipe and the expansion joint are connected, and the mixing pipe and the expansion joint are provided with a first filter plate, a second filter plate, a third filter plate and a fourth filter plate from right to left in sequence, and a circulation mechanism is provided between the second filter plate and the third filter plate; the circulation mechanism includes a first inner cylinder, a second inner cylinder is provided in the first inner cylinder, and a third inner cylinder is provided in the second inner cylinder An inner cylinder and a power compression part are provided in the third inner cylinder; a gear 1 is provided at the center of one side of the second filter plate corresponding to the third filter plate, a meshing gear 2 is provided on one side of the gear 1, a gear shaft is inserted through the middle of the gear 2, the gear shaft passes through the second filter plate and is connected to the motor 2 installed on the other side of the second filter plate, the other side of the gear shaft is connected to the power compression part, a number of through holes are evenly provided around the gear 1, a return pipe is provided on the side of the gear 1 away from the first filter plate, a return groove is provided below the return pipe outlet, a first pillar is provided at the bottom of the return groove, and a group of second pillars is provided at the bottom of the return pipe.

[0007] Preferably, an interlayer is formed between the first inner cylinder and the inner wall of the mixing tube, and a heating plate is provided on the inner wall of the interlayer.

[0008] Preferably, the aperture of the through hole is adapted to the diameter of the return pipe, a protrusion is provided on the side of the return groove away from gear one, the groove depth radius of the return groove is adapted to the aperture of the through hole, the right side of the return groove is in contact with one side of the gear, the first pillar is fixed on the left side of the bottom of the return groove, the right side of the return pipe is in contact with one side of the gear, and the return pipe outlet is located at the upper right side of the return groove.

[0009] Preferably, the second filter plate is provided with a circle of outlets, the diameter of the outlets being adapted to the diameter of the through holes; and there is a distance of 5-8 mm between the gear 1 and the second filter plate.

[0010] Preferably, an arc-shaped groove is provided on the second inner cylinder, and a straight groove is provided on the third inner cylinder; the power compression part includes a filter frame, an activated carbon filter is provided in the filter frame, and several arc-shaped plates are provided on the outside of the filter frame, and a limit rod is provided on the right side of the outside of one of the arc-shaped plates, and the limit rod passes through the straight groove and the arc-shaped groove.

[0011] Preferably, a filter screen is provided in the middle of the side of the second inner cylinder away from the third filter plate, and a spring ring is provided at the center of the side of the filter screen corresponding to the third filter plate. The spring ring is arranged in a conical structure, wherein the side of the gear shaft away from gear two is connected to the side of the filter screen.

[0012] Preferably, the second inner cylinder is made of elastic material, an embedding groove is provided on a side of the third filter plate away from the fourth filter plate, and the left side of the third filter plate is embedded in the embedding groove.

[0013] Preferably, a motor 1 is provided at the center of one side of the fourth filter plate corresponding to the third filter plate, a fixing column is provided on the side of the motor 1 away from the fourth filter plate, a bracket is provided on the top of the fixing column, the top of the bracket is fixed on the inner wall of the expansion joint, the output end of the motor 1 is connected to the output shaft, the output shaft passes through the fixing column, a rotating disk is provided on the side of the output shaft away from the motor 1, and a number of fan blades are provided on the side of the rotating disk.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are:

[0015] 1. A circulation mechanism is provided at the inlet end of the device. When the exhaust gas enters the entire device, the exhaust gas will circulate along with the circulation mechanism there, and the lower temperature portion of the exhaust gas entering will be heated to maintain a high temperature environment. This allows the exhaust gas to maintain a high conversion efficiency during the entire denitrification process, avoiding the generation of a large amount of by-products, ensuring that the denitrification device can continue to operate efficiently, while eliminating potential safety hazards and ensuring the stability of the denitrification device. A power compression unit is provided within the circulation mechanism. The power compression unit is mainly used to disperse the generated high temperature, while simultaneously drawing the introduced exhaust gas into it to fuse and collide with the dispersed high temperature, keeping the exhaust gas in a high-temperature environment.

[0016] 2. A spring coil is provided on one side of the activated carbon filter, and the spring coil is set to a conical structure. When the activated carbon filter moves, it will press or stretch the spring coil, and the heat entering the interior will be transferred to the spring coil at this location. The spring coil is made of heat-absorbing material, and the heat is increased by the action of the spring coil. As the compression or stretching movement occurs, the spring coil brings up the exhaust gas and heat flowing inside, promoting the full fusion of the two. Among them, the compressive elastic force generated by the spring coil with a conical structure is different in each part, and the flow power of parts with different elastic forces will also be different, and the power that promotes fusion and rolling will also be different.

[0017] 3. Ensure that the exhaust gas is always within a high conversion efficiency during the overall denitrification process, avoid the generation of a large number of by-products, ensure that denitrification can be carried out continuously and efficiently, eliminate safety hazards, and ensure the stability of denitrification. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 is a schematic diagram of the overall structure according to an embodiment of the present invention;

[0020] Figure 2 is a schematic diagram of the connection between the mixing tube and the first inner cylinder according to an embodiment of the present invention;

[0021] Figure 3 2. It is a schematic diagram of the connection structure between the mixing tube and the circulation mechanism according to an embodiment of the present invention;

[0022] Figure 4 is a schematic diagram of the structure of a return pipe according to an embodiment of the present invention;

[0023] Figure 5 is an exploded view of the connection between the gear 1 and the second filter plate according to an embodiment of the present invention;

[0024] Figure 6 is a schematic structural diagram of a circulation mechanism according to an embodiment of the present invention;

[0025] Figure 7 is a schematic structural diagram of a third inner cylinder according to an embodiment of the present invention;

[0026] Figure 8 is a schematic diagram of a filter frame structure according to an embodiment of the present invention;

[0027] Figure 9 Schematic diagram of the internal structure of a mixing tube according to an embodiment of the present invention.

[0028] In the picture:

[0029] 1. Support frame; 2. Reaction chamber; 3. Exhaust pipe; 4. Mixing tube; 5. Expansion joint; 6. Frame; 7. First filter plate; 8. Second filter plate; 9. Third filter plate; 10. Fourth filter plate; 11. First inner tube; 12. Second inner tube; 13. Third inner tube; 14. Gear 1; 15. Gear 2; 16. Gear shaft; 17. Motor 2; 18. Through hole; 19. Return pipe; 20. Return trough; 21. First pillar; 22. Second pillar; 23. Heating plate; 24. Outlet; 25. Arc trough; 26. Straight trough; 27. Filter frame; 28. Activated carbon filter; 29. ​​Arc plate; 30. Limit rod; 31. Filter; 32. Spring coil; 33. Motor 1; 34. Fixing column; 35. Bracket; 36. Rotating disk; 37. Fan blade DETAILED DESCRIPTION

[0030] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0032] According to an embodiment of the present invention, Figures 1-9 Shown in:

[0033] The present invention provides a denitration device for exhaust gas from a gas generator set, comprising a support frame 1, a reaction chamber 2 is provided on the top of the support frame 1, an exhaust pipe 3 and a mixing pipe 4 are connected to both sides of the reaction chamber 2, an expansion joint 5 is connected to the side of the mixing pipe 4 close to the reaction chamber 2, and a group of frames 6 are provided at the bottom of the mixing pipe 4; the mixing pipe 4 and the expansion joint 5 are connected to each other, and a first filter plate 7, a second filter plate 8, a third filter plate 9 and a fourth filter plate 10 are provided in the mixing pipe 4 and the expansion joint 5 from right to left, and a circulation mechanism is provided between the second filter plate 8 and the third filter plate 9; the circulation mechanism comprises a first inner cylinder 11, a second inner cylinder 12 is provided in the first inner cylinder 11, and a third inner cylinder 13 is provided in the second inner cylinder 12. A power compression part is provided in the third inner cylinder 13; a gear 14 is provided at the center of one side of the second filter plate 8 corresponding to the third filter plate 9, and a meshing gear 2 15 is provided on one side of the gear 14. A gear shaft 16 is inserted through the middle of the gear 2 15, and the gear shaft 16 passes through the second filter plate 8 and is connected to the motor 2 17 installed on the other side of the second filter plate 8. The other side of the gear shaft 16 is connected to the power compression part. A number of through holes 18 are evenly provided around the gear 14, and a return pipe 19 is provided on the side of the gear 14 away from the first filter plate 7. A return groove 20 is provided below the outlet of the return pipe 19, a first pillar 21 is provided at the bottom of the reflux groove 20, and a group of second pillars 22 are provided at the bottom of the return pipe 19.

[0034] Among them, an interlayer is formed between the first inner cylinder 11 and the inner wall of the mixing tube 4, and a heating plate 23 is provided on the inner wall of the interlayer. The aperture of the through hole 18 is adapted to the diameter of the return pipe 19. A protrusion is provided on the side of the reflux groove 20 away from the gear 14. The groove depth radius of the reflux groove 20 is adapted to the aperture of the through hole 18. The right side of the reflux groove 20 is in contact with the side of the gear 14. The first pillar 21 is fixed on the left side of the bottom of the reflux groove 20. The right side of the reflux pipe 19 is in contact with the side of the gear 14. The outlet of the reflux pipe 19 is located at the upper right side of the reflux groove 20. A circle of outlets 24 is provided on the second filter plate 8. The diameter of the outlet 24 is adapted to the aperture of the through hole 18; there is a spacing of 5-8mm between the gear 14 and the second filter plate 8.

[0035] In addition, an arc groove 25 is provided on the second inner cylinder 12, and a straight groove 26 is provided on the third inner cylinder 13; the power compression part includes a filter frame 27, an activated carbon filter 28 is provided in the filter frame 27, and a plurality of arc plates 29 are provided on the outside of the filter frame 27, and a limit rod 30 is provided on the right side of the outside of one of the arc plates 29, and the limit rod 30 passes through the straight groove 26 and the arc groove 25. A filter screen 31 is provided in the middle of the side of the second inner cylinder 12 away from the third filter plate 9, and a spring ring 32 is provided at the center of one side of the filter screen 31 corresponding to the third filter plate 9. The spring ring 32 is set to a conical structure, wherein the gear shaft 16 is connected to the filter screen 31 on the side away from the gear 2 15. 1, the second inner cylinder 12 is made of elastic material, the third filter plate 9 is provided with an embedding groove on the side away from the fourth filter plate 10, the left side of the third filter plate 9 is embedded in the embedding groove, and the fourth filter plate 10 is provided with a motor 33 at the center of one side of the third filter plate 9 corresponding to the third filter plate 9. The motor 33 is provided with a fixing column 34 on the side away from the fourth filter plate 10, and a bracket 35 is provided on the top of the fixing column 34. The top of the bracket 35 is fixed to the inner wall of the expansion joint 5. The output end of the motor 33 is connected to the output shaft, and the output shaft passes through the fixing column 34. A rotating disk 36 is provided on the side of the output shaft away from the motor 33, and a plurality of fan blades 37 are provided on the side of the rotating disk 36.

[0036] A first inner tube 11, a second inner tube 12 and a third inner tube 13 are provided in the mixing tube 4, which divides the interior of the mixing tube 4 into multiple layers. A warming layer is formed between the mixing tube 4 and the first inner tube 11. The warming layer transmits the heat source between the mixing tube 4, the first inner tube 11, the second inner tube 12 and the third inner tube through several filter plates, thereby maintaining a constant internal temperature. The interlayer formed between the mixing tube 4 and the first inner tube 11 is larger than the interlayer formed between the second inner tube 12 and the third inner tube 13, wherein the second inner tube 12 is made of soft material. When the gear 2 15 is running, the second inner tube 12 is driven to rotate by the gear shaft 16, and the gear shaft 16 is arranged on one side of the side of the second inner tube 12, so that the second inner tube 12 will continuously hit the first inner tube 11 after rotating, causing the spacing between the interlayers between the first inner tube 11 and the second inner tube 12, and the second inner tube 12 and the third inner tube 13 to change. After the spacing between several interlayers changes, the shuttle exhaust will be squeezed, causing the exhaust to be affected by the interlayers with different spacings, and the exhaust gas and the high temperature of the shuttle to continuously hit its inner wall, fully dispersing the exhaust gas or high temperature.

[0037] A first filter plate 7 is provided at the inlet end of the mixing tube 4. The aperture of the first filter plate 7 is larger than the aperture of the second filter plate 8, and a circle of outlets 24 are provided on the second filter plate 8. The outlets 24 and the through holes 18 are located at the same position, so that the through holes 18 and the outlets 24 are connected during the rotation of the through holes 18.

[0038] There is a certain distance between gear 14 and the second filter plate 8. When gear 14 rotates, the exhaust gas will form a vortex along the distance left in the middle, causing the exhaust gas to stop when rotating there. When it stops and swirls, it will circulate into the return pipe 19. Under the guidance and transportation of the return pipe 19 and the return groove 20, the exhaust gas is prompted to form a circular motion. When it stops and rolls, the exhaust gas will be more fully integrated with the internal high temperature, keeping the exhaust gas always in a high temperature state.

[0039] The reaction chamber 2 there is set to an existing structure. The denitrification device includes the reaction chamber 2. In the present invention, the main purpose is to maintain the high temperature state of the exhaust gas just entering the mixing tube 4 after the exhaust gas enters the mixing tube 4, so as to keep the exhaust gas always in a high temperature state, thereby avoiding that a part of the exhaust gas just entering has a temperature that is too low and affects the denitrification effect, and avoids the generation of a large amount of by-products.

[0040] Detailed usage and effects of this embodiment:

[0041] The generated exhaust gas enters from the inlet end of the mixing tube 4, passes through the first filter plate 7, and a front chamber is formed between the first filter plate 7 and the second filter plate 8. After the exhaust gas enters the front chamber, it penetrates from the second filter plate 8. The driving motor 2 17 is running, and the motor 2 17 drives the gear 2 15 to rotate. After the gear 2 15 rotates, it drives the gear 14 meshing on the side to rotate. After the gear 14 rotates, the exhaust gas that passes through will form a vortex with the rotation. Part of the exhaust gas enters the space formed between the second filter plate 8 and the gear 1 14 through the outlet 24. With the rotation movement, the exhaust gas rolls inside the space and hits its inner wall. Part of the exhaust gas that passes through the through hole 18 is brought into the reflux pipe 19 that passes through the side, and enters the reflux groove 20 along the reflux pipe 19. It is guided and transported from the side again. The exhaust gas that enters the reaction chamber 2 collides with and mixes with the heat generated by the third filter plate 9.

[0042] After the gear 14 rotates, it drives the gear shaft 16 inserted in the middle to rotate, and the gear shaft 16 drives the filter 31 connected on one side. Since the filter 31 is set on the second inner cylinder 12, when the filter 31 rotates, the second inner cylinder 12 will also rotate. After the second inner cylinder 12 rotates, the arc groove 25 on the surface will move with the inserted limit rod 30. The limit rod 30 moves with the curvature of the arc groove 25, and the limit rod 30 slides in the straight groove 26. In this way, the limit rod 30 moves back and forth. When the limit rod 30 moves back and forth, it will move the arc plate 29, and the arc plate 29 carries the filter connected in the middle. The frame 27 moves together. When the filter frame 27 moves in the third inner tube 13, the activated carbon filter 28 brings up the incoming exhaust gas. During the movement of the activated carbon filter 28, the internal space is compressed and stretched, and the spacing formed in the internal space will keep changing. In the continuous conversion of the space, the exhaust gas flowing inside is constantly colliding. The exhaust gas is diffused and compressed under the change of space, and the heat of the internal flow will collide and merge with the exhaust gas, keeping the temperature environment of the exhaust gas at a high temperature, ensuring that the denitrification device can continue to operate with high efficiency, thereby eliminating safety hazards and ensuring the stability of the denitrification device.

[0043] The above specific embodiments will allow those skilled in the art to easily implement the present invention. However, it should be understood that the present invention is not limited to the above specific embodiments. Based on the disclosed embodiments, those skilled in the art can arbitrarily combine different technical features to implement different technical solutions.

Claims

1. A gas generator set tail gas denitrification device, characterized in that: The invention comprises a support frame (1), a reaction chamber (2) is provided on the top of the support frame (1), an exhaust pipe (3) and a mixing pipe (4) are connected to both sides of the reaction chamber (2), an expansion joint (5) is connected to the side of the mixing pipe (4) close to the reaction chamber (2), and a group of frames (6) are provided at the bottom of the mixing pipe (4); The mixing tube (4) and the expansion joint (5) are connected to each other, and a first filter plate (7), a second filter plate (8), a third filter plate (9) and a fourth filter plate (10) are sequentially provided inside the mixing tube (4) and the expansion joint (5) from right to left, and a circulation mechanism is provided between the second filter plate (8) and the third filter plate (9); The circulation mechanism comprises a first inner cylinder (11), a second inner cylinder (12) is provided in the first inner cylinder (11), a third inner cylinder (13) is provided in the second inner cylinder (12), and a power compression part is provided in the third inner cylinder (13); A gear 1 (14) is provided at the center of one side of the second filter plate (8) corresponding to the third filter plate (9), and a meshing gear 2 (15) is provided on one side of the gear 1 (14). A gear shaft (16) is inserted through the middle of the gear 2 (15), and the gear shaft (16) passes through the second filter plate (8) and is connected to the motor 2 (17) installed on the other side of the second filter plate (8). The other side of the gear shaft (16) is connected to the power compression part. A plurality of through holes (18) are evenly provided around the periphery of the gear 1 (14). A return pipe (19) is provided on the side of the gear 1 (14) away from the first filter plate (7), and a return groove (20) is provided below the outlet of the return pipe (19). A first support (21) is provided at the bottom of the return groove (20), and a group of second supports (22) is provided at the bottom of the return pipe (19).

2. A gas generator set tail gas denitrification device according to claim 1, characterized in that: An interlayer is formed between the first inner cylinder (11) and the inner wall of the mixing tube (4), and a heating plate (23) is provided on the inner wall of the interlayer.

3. The exhaust denitration device for a gas-fired generator set according to claim 1, characterized in that: The aperture of the through hole (18) is adapted to the diameter of the return pipe (19), a protruding block is provided on the side of the return groove (20) away from the gear one (14), the groove depth radius of the return groove (20) is adapted to the aperture of the through hole (18), the right side of the return groove (20) contacts the side of the gear one (14), the first pillar (21) is fixed to the left side of the bottom of the return groove (20), the right side of the return pipe (19) contacts the side of the gear one (14), and the outlet of the return pipe (19) is located at the upper right side of the return groove (20).

4. The exhaust denitration device for a gas-fired generator set according to claim 1, characterized in that: The second filter plate (8) is provided with a circle of outlets (24), the diameter of the outlets (24) being adapted to the diameter of the through holes (18); There is a distance of 5-8 mm between the gear 1 (14) and the second filter plate (8).

5. The exhaust denitration device for a gas-fired generator set according to claim 1, characterized in that: The second inner cylinder (12) is provided with an arc groove (25), and the third inner cylinder (13) is provided with a straight groove (26); The power compression part includes a filter frame (27), an activated carbon filter (28) is provided in the filter frame (27), and a plurality of arc-shaped plates (29) are provided on the outside of the filter frame (27), wherein a limiting rod (30) is provided on the right side of the outside of one of the arc-shaped plates (29), and the limiting rod (30) passes through the straight groove (26) and the arc-shaped groove (25).

6. The exhaust denitration device for a gas-fired generator set according to claim 5, characterized in that: A filter screen (31) is provided in the middle of a side of the second inner cylinder (12) away from the third filter plate (9), and a spring ring (32) is provided at the center of a side of the filter screen (31) corresponding to the third filter plate (9). The spring ring (32) is configured as a conical structure, wherein a side of the gear shaft (16) away from the second gear (15) is connected to the side of the filter screen (31).

7. The exhaust denitration device for a gas-fired generator set according to claim 6, characterized in that: The second inner cylinder (12) is made of elastic material. An embedding groove is provided on a side of the third filter plate (9) away from the fourth filter plate (10), and the left side of the third filter plate (9) is embedded in the embedding groove.

8. The exhaust denitration device for a gas-fired generator set according to claim 1, characterized in that: A motor 1 (33) is provided at the center of one side of the fourth filter plate (10) corresponding to the third filter plate (9), a fixing column (34) is provided on the side of the motor 1 (33) away from the fourth filter plate (10), a bracket (35) is provided on the top of the fixing column (34), and the top of the bracket (35) is fixed on the inner wall of the expansion joint (5), an output end of the motor 1 (33) is connected to an output shaft, the output shaft passes through the fixing column (34), a rotating disk (36) is provided on the side of the output shaft away from the motor 1 (33), and a plurality of fan blades (37) are provided on the side of the rotating disk (36).

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