An industrial waste gas leak prevention device

Abstract

This utility model discloses an industrial waste gas leak prevention device, including a smoke collection duct, the internal space of which is a smoke collection chamber. The upper wall of the smoke collection duct is connected to a pressurized exhaust duct. The upper wall of the smoke collection duct is an ejector mounting wall. Several water film ejectors are installed in a circumferential array on the lower side of the ejector mounting wall. Each water film ejector can spray a cone-shaped water film jet downwards. The several cone-shaped water film jets distributed in a circumferential array are spliced ​​together to form a water film isolation wall, which divides the smoke collection chamber into upper and lower parts. The water film isolation wall formed by the several cone-shaped water film jets distributed in a circumferential array can effectively prevent harmful gas fumes from being directly discharged from the smoke collection duct and absorb the harmful gas fumes. The high-efficiency telescopic device drives the impact plate to form a gas fumes channel at the center of the water film isolation wall, so that the absorbed gas fumes can be discharged from the smoke collection duct in time, thereby avoiding excessive pressure in the smoke collection duct and reaction chamber, which may lead to an explosion.

Description

Technical Field

[0001] This utility model relates to the field of air pollution control technology, and more specifically to an industrial waste gas leak prevention device. Background Technology

[0002] In industrial production, if the raw material feeding speed in the reaction chamber is too fast or the maintenance is improper, the reaction in the reaction chamber may be incomplete, resulting in the presence of harmful gases in the industrial waste gas that accumulates in the flue. Existing industrial waste gas leak prevention devices generally use sealing devices to seal, treat and discharge industrial waste gas. However, the industrial waste gas that accumulates in the flue has characteristics such as high temperature, high pressure and strong corrosion, which makes the sealing device very easy to be damaged. Summary of the Invention

[0003] Purpose of the invention: In order to overcome the shortcomings of the existing technology, this utility model provides an industrial waste gas leak prevention device that can effectively prevent harmful gases in the industrial waste gas in the flue from being directly discharged from the flue, and can efficiently absorb harmful gases, and can promptly discharge the gas and smoke after the harmful substances in the flue are absorbed from the flue, thereby avoiding excessive pressure in the flue and reaction chamber.

[0004] Technical Solution: To achieve the above objectives, this utility model provides an industrial waste gas leak prevention device, including a smoke collection cylinder. The internal space of the smoke collection cylinder is a smoke collection chamber. The upper wall of the smoke collection cylinder is connected to a pressurized exhaust cylinder. The upper wall of the smoke collection cylinder is an ejector mounting wall. Several water film ejectors are installed in a circumferential array on the lower side of the ejector mounting wall. Each water film ejector can spray a conical water film jet downwards. Among the several conical water film jets sprayed by the several water film ejectors in the circumferential array, any two adjacent conical water film jets intersect each other, so that the several conical water film jets in the circumferential array are spliced ​​together to form a water film isolation wall, which divides the smoke collection chamber into upper and lower parts.

[0005] Furthermore, the radius of the outer wall of the booster exhaust stack is smaller than the radius of the inner wall of the smoke collection stack. The booster exhaust stack is equipped with a booster fan and a motor. The booster fan is coaxially arranged with the booster exhaust stack and located inside the booster exhaust stack. The motor is connected to the booster fan drive.

[0006] Furthermore, each water film ejector includes a conical jet shroud and an inlet pipe. The inlet end of each inlet pipe is connected to a supply pipe. The upper end of the conical jet shroud is connected to the outlet end below the inlet pipe. An annular jet port is provided on the lower edge of the conical jet shroud.

[0007] Furthermore, the conical jet shroud includes a first conical wall and a second conical wall. The internal space of the first and second conical walls is a conical annular spray chamber. The inlet pipe includes an outer annular wall and an inner annular wall arranged coaxially. An inlet channel is formed between the outer annular wall and the inner annular wall. The inlet channel is connected to the conical annular spray chamber.

[0008] Furthermore, the upper contour of the first conical wall is coaxially and integrally connected with the lower contour of the inner annular wall, and the upper contour of the second conical wall is coaxially and integrally connected with the lower contour of the outer annular wall. The end of the first conical wall away from the inner annular wall and the end of the second conical wall away from the outer annular wall form an annular jet orifice, and the lower end of the conical annular spray chamber is connected to the annular jet orifice along the contour.

[0009] Furthermore, the common intersection point of several conical jet water films ejected from several water film injectors arranged in a circumferential array is located on the axial diameter of the smoke collection chamber. An impact plate is set near the common intersection point, and the impact plate has several mesh holes. Driven by the driving device, the impact plate moves at high frequency above and below the common intersection point along the axial diameter of the smoke collection chamber. The driving device is connected to the pressurized exhaust pipe through a bracket. Both ends of the bracket are fixedly connected to the inner wall of the pressurized exhaust pipe, and the bracket is located below the pressurized fan.

[0010] Beneficial effects: In this industrial waste gas leak prevention device, several conical jet water films arranged in a circumferential array are spliced ​​together to form a water film isolation wall, which can effectively prevent harmful gas fumes from being directly discharged from the fume collection cylinder and can efficiently absorb harmful gas fumes. Through the high-efficiency telescopic device, the impact plate is driven to form a gas fumes channel at the center of the water film isolation wall, which can enable the gas fumes after the harmful substances in the fume collection cylinder are absorbed to be discharged from the fume collection cylinder in a timely manner, thereby avoiding excessive pressure in the fume collection cylinder and reaction chamber, which may lead to an explosion. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of an industrial waste gas leak prevention device according to the present invention;

[0012] Figure 2 View from direction A;

[0013] Figure 3 For local magnification Figure 1 ;

[0014] Figure 4 For local magnification Figure 2 . Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] As attached Figure 1 and 2As shown, an industrial waste gas leak prevention device includes a smoke collection duct 1, the internal space of which is a smoke collection chamber 22. The upper wall of the smoke collection duct 1 is connected to a pressurized exhaust duct 2, and the lower end of the smoke collection duct 1 is connected to the exhaust end of the reaction chamber. The upper wall of the smoke collection duct 1 is an injector mounting wall 3, and several water film injectors 5 are installed in a circumferential array on the lower side of the injector mounting wall 3. Each water film injector 5 can spray a conical jet of water film downwards, and the several water film jets are distributed in a circumferential array. Among the several conical water jets sprayed from the nozzle 5, any two adjacent conical water jets intersect each other, so that the several conical water jets distributed in a circular array are spliced ​​together to form a water film isolation wall, which divides the smoke collection chamber 22 into upper and lower parts by the water film isolation wall, thereby preventing the harmful gas smoke in the smoke collection chamber 22 from being discharged from the pressurized smoke exhaust pipe 2; the conical water jets sprayed from each water film injector 5 can absorb the harmful gas smoke located in the lower part of the smoke collection chamber 22.

[0017] The radius of the outer wall of the pressurized exhaust stack 2 is smaller than the radius of the inner wall of the smoke collection stack 1. Each water film injector 5 is generally installed between the outer wall of the pressurized exhaust stack 2 and the inner wall of the smoke collection stack 1. The pressurized exhaust stack 2 is equipped with a pressurized fan 8 and a motor 9. The pressurized fan 8 is coaxially arranged with the pressurized exhaust stack 2 and located inside the pressurized exhaust stack 2. The motor 9 is connected to the pressurized fan 8 for driving. The motor 9 always drives the pressurized fan 8 to rotate, so that the gas and smoke that meet the emission standards in the smoke collection chamber 22 can be discharged quickly, thereby avoiding excessive accumulation of gas and smoke in the smoke collection chamber 22, which could cause an explosion risk.

[0018] The injector mounting wall 3 has several injection holes 4 arranged in a circular array. Each water film injector 5 is set corresponding to each injection hole 4, and the inlet end of each water film injector 5 is sleeved and installed inside the injection hole 4. The inlet end of each water film injector 5 is connected to a supply pipe 6. Therefore, the connection between each water film injector 5 and the supply pipe 6 is located outside the smoke collection chamber 22, which can prevent the gas and smoke in the smoke collection chamber 22 from overflowing from the connection between each water film injector 5 and the supply pipe 6, and can greatly reduce the difficulty of maintenance.

[0019] like Figure 3 As shown, each water film ejector 5 includes a conical jet hood 16 and an inlet pipe 23. The inlet end of each inlet pipe 23 is connected to a supply pipe 6. The supply pipe 6 provides the water film ejector 5 with an aqueous solution or a solution that can react with the gas fumes generated in the reaction chamber. The upper end of the conical jet hood 16 is connected to the outlet end below the inlet pipe 23. The lower edge of the conical jet hood 16 is provided with an annular jet port 19. The flow rate of the solution in the supply pipe 6 shall not be less than the minimum flow rate required for the water film isolation wall to be formed by splicing together several conical jet water films ejected by several water film ejectors 5 in a circular array.

[0020] The conical jet hood 16 includes a first conical wall 28 and a second conical wall 29. The internal space of the first conical wall 28 and the second conical wall 29 is a conical annular spray chamber 20. The inlet pipe 23 includes an outer annular wall 26 and an inner annular wall 27 arranged coaxially. The upper end of the inner annular wall 27 is constricted inward. An inlet channel 25 is formed between the outer annular wall 26 and the inner annular wall 27. The inlet channel 25 is connected to the conical annular spray chamber 20. The cross-sectional area of ​​the conical annular spray chamber 20 near the inlet pipe 23 is larger than the cross-sectional area of ​​the conical annular spray chamber 20 away from the inlet pipe 23. This allows the aqueous solution supplied by the supply pipe 6 or the solution that can react with the gas and smoke generated in the reaction chamber to gradually increase its flow rate in the conical annular spray chamber 20, ensuring that the aqueous solution or the solution that can react with the gas and smoke generated in the reaction chamber is finally ejected from the annular jet port 19 to form a conical jet water film.

[0021] The upper contour of the first conical wall 28 is coaxially and integrally connected with the lower contour of the inner annular wall 27. The upper contour of the second conical wall 29 is coaxially and integrally connected with the lower contour of the outer annular wall 26. The end of the first conical wall 28 away from the inner annular wall 27 and the end of the second conical wall 29 away from the outer annular wall 26 form an annular jet orifice 19. The lower end of the conical annular spray chamber 20 is connected to the annular jet orifice 19 along the contour. The conical jet water film ejected from the annular jet orifice 19 intersects with the inner wall of the smoke collection cylinder 1, thereby preventing the harmful gas smoke in the smoke collection chamber 20 from overflowing.

[0022] The common intersection point 21 of several conical jet water films ejected from several water film ejectors 5 arranged in a circumferential array is located on the axial diameter of the smoke collection chamber 22. An impact plate 15 is disposed near the common intersection point 21, such as... Figure 4As shown, the striking plate 15 has several mesh holes 17. Driven by the driving device, the striking plate 15 moves at high frequency above and below the common intersection point 21 along the axial diameter of the smoke collection chamber 22. The driving device is connected to the pressurized exhaust pipe 2 through the bracket 10. Both ends of the bracket 10 are fixedly connected to the inner wall of the pressurized exhaust pipe 2, and the bracket 10 is located below the pressurized fan 8. Driven by the driving device, the striking plate 15 moves at high frequency above and below the common intersection point 21 along the axial diameter of the smoke collection chamber 22, so that the center of the water film isolation wall formed by several conical jet water films arranged in a circumferential array is struck by the striking plate 15. The gas mist is dispersed and intermittently formed by several water film injectors 5, which spray water solution or solution that can react with the gas mist generated in the reaction chamber onto the impact plate 15. The water mist is formed by the impact force of the impact plate 15 and the several networks 17 opened on the impact plate 15, thereby reacting and absorbing the harmful part of the gas mist in the middle section below the water film isolation wall, so that the gas mist meets the emission standards. After reaction and absorption, the gas mist that meets the emission standards is intermittently discharged from the pressurized exhaust stack 2 through the gas mist channel formed in the center of the water film isolation wall.

[0023] The driving device is a high-frequency telescopic device 12. The high-frequency telescopic device 10 includes a fixed part 13 and a telescopic part 14. The striking plate 15 is fixedly installed at the end of the telescopic part 14. A hanging circular plate 18 is provided on the end of the fixed part 13 away from the striking plate 15. An installation ring 11 is provided on the bracket 10. The installation ring 11 is coaxially arranged with the pressurized exhaust pipe 2. The radius of the outer wall of the fixed part 13 is the same as the radius of the inner wall of the installation ring 11. The radius of the hanging circular plate 18 is much larger than the radius of the outer wall of the installation ring 11. When the lower end of the fixed part 13 of the high-frequency telescopic device 10 passes through the installation ring 11 and is sleeved onto the bracket 10, the lower wall of the hanging circular plate 18 abuts against the upper wall of the installation ring 11. Then the telescopic part 14 moves vertically downward relative to the fixed part 13 along the axis of the smoke collection chamber 22 until the striking plate 15 is located near the common intersection point 21.

[0024] The working principle of this industrial waste gas leak prevention device is as follows: When the detection device in the reaction chamber detects an abnormality in the reaction, the control system controls several liquid supply pipes 6 to supply aqueous solutions or solutions that can react with the gas and smoke generated in the reaction chamber to each water film injector 5. This causes the several conical jet water films sprayed from the several water film injectors 5, which are arranged in a circumferential array, to jointly form a water film isolation wall. This water film isolation wall divides the smoke collection chamber 22 into upper and lower parts, causing the gas and smoke in the smoke collection chamber 20 to accumulate below the water film isolation wall, thereby preventing harmful gas and smoke from being directly discharged from the pressurized exhaust stack 2. The aqueous solutions or solutions that can react with the gas and smoke generated in the reaction chamber supplied from each water film injector 5 collide with the inner wall of the smoke collection stack 1 and form water mist, thereby absorbing the harmful substances in the gas and smoke in the smoke collection chamber 20. The several conical jet water films sprayed from the several water film injectors 5, which are arranged in a circumferential array, converge at a common intersection point 21. The impact plates collide with each other, forming a water mist that absorbs harmful substances in the gas and smoke within the smoke collection chamber 20. Subsequently, the control system activates the high-frequency expansion joint 12, causing the impact plate 15 to move vertically up and down at high frequency relative to the common intersection point 21 along the axis of the smoke collection chamber 22 under the drive of the expansion joint 14. This causes the water film isolation wall, formed by several conical jet water films arranged in a circumferential array, to be broken up by the impact plate 15, intermittently forming a gas and smoke channel. Aqueous solutions or solutions that can react with the gas and smoke generated in the reaction chamber are sprayed from several water film injectors 5 and impact the impact plate 15. The water mist formed by the impact force of the impact plate 15 and the several networks 17 on the impact plate 15 reacts with and absorbs the harmful parts of the gas and smoke located below the water film isolation wall. After reaction and absorption, the gas and smoke that meet the emission standards are intermittently discharged from the pressurized exhaust stack 2 through the gas and smoke channel formed at the center of the water film isolation wall.

[0025] The above are the preferred embodiments described in this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

Claims

1. An industrial waste gas leak prevention device, characterized in that: The system includes a smoke collection duct (1), the internal space of which is a smoke collection chamber (22). The upper wall of the smoke collection duct (1) is connected to a pressurized exhaust duct (2). The upper wall of the smoke collection duct (1) is an injector mounting wall (3). Several water film injectors (5) are installed in a circular array on the lower side of the injector mounting wall (3). Each water film injector (5) can spray a conical water film jet downwards. Among the several conical jet water films sprayed by the several water film injectors (5) in a circular array, any two adjacent conical jet water films are interlaced, so that the several conical jet water films in a circular array are spliced ​​together to form a water film isolation wall, so that the smoke collection chamber (22) is divided into upper and lower parts by the water film isolation wall.

2. The industrial waste gas leak prevention device according to claim 1, characterized in that: The radius of the outer wall of the booster exhaust pipe (2) is smaller than the radius of the inner wall of the smoke collection pipe (1). The booster exhaust pipe (2) is equipped with a booster fan (8) and a motor (9). The booster fan (8) is coaxial with the booster exhaust pipe (2) and located inside the booster exhaust pipe (2). The motor (9) is connected to the booster fan (8) for driving.

3. The industrial waste gas leak prevention device according to claim 1, characterized in that: Each of the water film jets (5) includes a conical jet shroud (16) and an inlet pipe (23). The inlet end of each inlet pipe (23) is connected to a supply pipe (6). The upper end of the conical jet shroud (16) is connected to the outlet end below the inlet pipe (23). The lower edge of the conical jet shroud (16) is provided with an annular jet port (19).

4. The industrial waste gas leak prevention device according to claim 3, characterized in that: The conical jet hood (16) includes a first conical wall (28) and a second conical wall (29). The internal space of the first conical wall (28) and the second conical wall (29) is a conical annular spray chamber (20). The liquid inlet pipe (23) includes an outer annular wall (26) and an inner annular wall (27) arranged coaxially. A liquid inlet channel (25) is formed between the outer annular wall (26) and the inner annular wall (27). The liquid inlet channel (25) is connected to the conical annular spray chamber (20).

5. An industrial waste gas leak prevention device according to claim 4, characterized in that: The upper contour of the first conical wall (28) is coaxially and integrally connected with the lower contour of the inner annular wall (27). The upper contour of the second conical wall (29) is coaxially and integrally connected with the lower contour of the outer annular wall (26). The end of the first conical wall (28) away from the inner annular wall (27) and the end of the second conical wall (29) away from the outer annular wall (26) form an annular jet port (19). The lower end of the conical annular spray cavity (20) is connected to the annular jet port (19) along the contour.

6. The industrial waste gas leak prevention device according to claim 1, characterized in that: The common intersection (21) of several conical jet water films ejected from several water film injectors (5) arranged in a circular array is located on the axial diameter of the smoke collection chamber (22). A striking plate (15) is provided near the common intersection (21). Several mesh holes (17) are opened on the striking plate (15). Under the drive of the driving device, the striking plate (15) moves at high frequency above and below the common intersection (21) along the axial diameter of the smoke collection chamber (22). The driving device is connected to the pressurized smoke exhaust pipe (2) through a bracket (10). Both ends of the bracket (10) are fixedly connected to the inner wall of the pressurized smoke exhaust pipe (2), and the bracket (10) is located below the pressurized fan (8).

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