A spray type exhaust gas treatment device

Abstract

This utility model belongs to the field of waste gas treatment technology, specifically disclosing a spray-type waste gas treatment device, including: a tower base, a tower body, a waste gas inlet pipe, a waste gas outlet pipe, and a spray system. The tower base is hollow and open at the top, and the inner cavity of the tower base stores spray liquid. The tower body is hollow and open on both the top and bottom sides, with the lower opening of the tower body sealed to the upper opening of the tower base. The outlet of the waste gas inlet pipe extends into the tower body. In use, waste gas rises through the lower side of the tower body. The spray liquid stored in the tower base is drawn upwards by a suction pump and suction pipe, and falls through a dispersing nozzle. The dispersed spray liquid contacts the waste gas, neutralizing its components. Compared to existing technologies, the dispersing nozzle disperses the spray liquid, and the loose packing layer increases the contact path between the rising waste gas and the falling spray liquid, resulting in better neutralization of the waste gas.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, specifically a spray-type waste gas treatment device. Background Technology

[0002] Waste gas spraying treatment technology is one of the most commonly used wet treatment technologies in industrial waste gas purification. Its core is to remove harmful pollutants (such as acid and alkali gases, dust, some organic pollutants and malodorous substances) from waste gas by fully contacting the liquid absorbent with the waste gas and using physical dissolution or chemical reaction. It is widely used in waste gas treatment in industries such as chemical, electroplating, spraying, power, and metallurgy.

[0003] Currently, during spray treatment, the spray liquid is sprayed directly from the upper side of the tower downwards, while the exhaust gas is output from the lower side upwards. This results in poor contact between the exhaust gas and the spray liquid, leading to poor exhaust gas treatment effect. Utility Model Content

[0004] The purpose of this utility model is to provide a spray-type waste gas treatment device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a spray-type waste gas treatment device, comprising: Tower base, tower body, exhaust gas inlet pipe, exhaust gas outlet pipe, and spray system; The tower base is hollow and open at the top, and the inner cavity of the tower base stores the spray liquid. The tower body is hollow and open at the top and bottom. The lower opening of the tower body is sealed to the upper opening of the tower base. The outlet of the exhaust gas inlet pipe extends into the tower body, and one end of the exhaust gas outlet pipe is connected to the upper opening of the tower body. The spraying system includes a support mesh plate installed inside the tower body, a loose packing layer located on the upper part of the support mesh plate, a suction pipe, and a suction pump. One end of the suction pipe is connected to the interior of the tower base, and a spray output pipe is connected to the suction pipe. The spray output pipe extends into the suction pipe, and a dispersion nozzle is provided at the end of the spray output pipe located inside the suction pipe. The dispersion nozzle is located on the upper side of the loose packing layer, and the suction pump is installed on the pipeline of the suction pipe.

[0006] Preferably, the dispersion nozzle is petal-shaped and has a hollow structure with uniformly distributed dispersion holes at the bottom.

[0007] Preferably, a ladder is provided on the outer wall of the tower body, and a through groove is opened on the outer wall of the tower body at a position corresponding to the loose packing layer. A cover is detachably connected to the through groove by screws, and a sealing ring is embedded between the cover and the through groove.

[0008] Preferably, it also includes a replenishment mechanism, which includes a spray agent storage tank and a replenishment pipe connected to the bottom of the spray agent storage tank. The end of the replenishment pipe away from the spray agent storage tank is connected to a suction pipe, and a shut-off valve and a check valve are installed on the replenishment pipe.

[0009] Preferably, a support frame is provided on the lower side of the outer wall of the spray agent storage tank.

[0010] Preferably, the exhaust gas inlet pipe is bent downwards at one end inside the tower body and extends into the tower base.

[0011] Preferably, one end of the exhaust gas inlet pipe extending into the tower base is connected to an exhaust gas dispersion disc.

[0012] Preferably, the exhaust gas dispersion disc includes a disc cover and an arc-shaped disc body threadedly connected to the lower side of the disc cover. The arc-shaped disc body is hollow and has dispersion holes at the edge of its lower surface. The exhaust gas inlet pipe is threadedly connected to the disc cover and communicates with the interior of the arc-shaped disc body.

[0013] Compared with the prior art, the beneficial effects of this utility model are: When this solution is in use, the exhaust gas rises through the lower side of the tower body, and the spray liquid stored in the tower base is drawn up by the suction pump and suction pipe and falls based on the dispersion nozzles. The dispersed and falling spray liquid (alkaline) comes into contact with the exhaust gas and can react and neutralize the components (acidic components) in the exhaust gas.

[0014] Compared to existing technologies, the dispersion nozzle can disperse the spray liquid. Based on the setting of the loose packing layer, the contact path between the floating exhaust gas and the falling spray liquid is increased, resulting in better neutralization and treatment of the exhaust gas. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the tower body of this utility model; Figure 3 This is a schematic diagram of the structure of the suction pipe and the spray agent storage tank of this utility model; Figure 4 This is a schematic diagram of the structure of the tower base, exhaust gas inlet pipe, and exhaust gas dispersion disc of this utility model; Figure 5 This is a schematic diagram of the structure of the waste gas dispersion disc of this utility model; Figure 6 This is a schematic diagram of the separate structure of the waste gas dispersion disc of this utility model.

[0016] In the diagram: 1. Tower base; 2. Tower body; 3. Exhaust gas inlet pipe; 4. Exhaust gas outlet pipe; 5. Suction pipe; 6. Spray output pipe; 7. Cover; 8. Ladder; 9. Support mesh plate; 10. Loose packing layer; 11. Dispersion nozzle; 12. Suction pump; 13. Spray agent temporary storage tank; 14. Support frame; 15. Replenishment pipe; 16. One-way valve; 17. Shut-off valve; 18. Disc cover; 19. Arc-shaped disc. Detailed Implementation

[0017] 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.

[0018] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example 1

[0019] Please see Figure 1-6 This utility model provides a technical solution: a spray-type waste gas treatment device, including: a tower base 1, a tower body 2, a waste gas inlet pipe 3, a waste gas outlet pipe 4, and a spray system; The tower base 1 is hollow and open at the top, and the inner cavity of the tower base 1 stores the spray liquid. The tower body 2 is hollow and open at both the top and bottom. The lower opening of the tower body 2 is sealed to the upper opening of the tower base 1. The outlet of the exhaust gas inlet pipe 3 extends into the tower body 2, and one end of the exhaust gas outlet pipe 4 is connected to the upper opening of the tower body 2. The spraying system includes a support mesh plate 9 installed inside the tower body 2, a loose packing layer 10 located above the support mesh plate 9, a suction pipe 5, and a suction pump 12. One end of the suction pipe 5 communicates with the interior of the tower base 1. A spray output pipe 6 is connected to the suction pipe 5 and extends into the suction pipe 5. A dispersion nozzle 11 is provided at one end of the spray output pipe 6 located inside the suction pipe 5. The dispersion nozzle 11 is located above the loose packing layer 10. The suction pump 12 is installed on the pipeline of the suction pipe 5.

[0020] Analysis of the above content: The loose packing layer 10 is made of porous polyethylene granules. During operation, one end of the exhaust gas inlet pipe 3 is connected to the exhaust gas outlet pipe. The exhaust gas enters the tower body 2 through the exhaust gas inlet pipe 3 and floats upward inside the tower body 2. The corresponding spray liquid is prepared according to the components that need to be treated in the exhaust gas. For example, if the exhaust gas contains sulfur dioxide, an alkaline spray liquid (such as sodium hydroxide solution) can be used to react the sulfur dioxide to generate sodium sulfite, thereby treating the corresponding components in the exhaust gas. The treated exhaust gas continues to float upward and is output from the exhaust gas outlet pipe 4.

[0021] Support blocks are welded to the inner wall edge of tower body 2 to support the support mesh plate 9. The mesh size of the support mesh plate 9 is smaller than the particle size of the loose packing layer 10. Both tower base 1 and tower body 2 are made of stainless steel, and the joints are sealed by welding. Example 2

[0022] Please see Figure 1-6 Based on Embodiment 1, this utility model provides a technical solution: the dispersion nozzle 11 is petal-shaped and has a hollow structure with uniformly distributed dispersion holes at the bottom.

[0023] Analysis of the above content: After the spray liquid enters the dispersing nozzle 11, it is evenly dispersed and sprayed out from the lower dispersing hole (similar to a shower head in daily life, which disperses water). After being dispersed, it can come into good contact with the rising exhaust gas. Example 3

[0024] Please see Figure 1-6 The present invention provides a technical solution based on embodiment one: a ladder 8 is provided on the outer wall of the tower body 2, and a through groove is opened on the outer wall of the tower body 2 at a position corresponding to the loose filler layer 10. A cover 7 is detachably connected to the through groove by screws, and a sealing ring is embedded between the cover 7 and the through groove.

[0025] Analysis of the above content: The ladder 8 is welded to the outer wall of the tower body 2. The ladder 8 makes it convenient for maintenance personnel to climb up and down. The through groove facilitates the addition and removal of the loose filler layer 10 material. Example 4

[0026] Please see Figure 1-6 The present invention provides a technical solution based on Embodiment 1: it further includes a replenishment mechanism, the replenishment mechanism including a spray agent storage tank 13 and a replenishment pipe 15 connected to the bottom of the spray agent storage tank 13. The end of the replenishment pipe 15 away from the spray agent storage tank 13 is connected to the suction pipe 5. A shut-off valve 17 and a one-way valve 16 are installed on the pipeline of the replenishment pipe 15.

[0027] Analysis of the above content: According to the example above, as the reaction proceeds, the alkaline component in the spray liquid will be gradually consumed. Therefore, it is necessary to replenish the alkaline solution (if it is another type of spray liquid, then replenish other types of solutions). The alkaline solution is pre-stored in the spray agent storage tank 13. The spray agent storage tank 13 has an opening, which can be used to replenish the solution. At the same time, the spray agent storage tank 13 is connected to the outside through the opening to avoid the alkaline solution not being able to fall due to the negative pressure inside the spray agent storage tank 13. The alkaline solution in the spray agent storage tank 13 is input into the suction pipe 5 through the replenishment pipe 15 under the action of gravity. In order to avoid the difficulty in replenishing the alkaline solution due to the high pressure in the suction pipe 5, it can be replenished when the operation of this scheme is stopped, or a pump can be installed on the pipeline of the replenishment pipe 15 to draw the alkaline solution into the suction pipe 5. Example 5

[0028] Please see Figure 1-6 Based on Embodiment 4, this utility model provides a technical solution: a support frame 14 is provided on the lower side of the outer wall of the spray agent storage tank 13.

[0029] Analysis of the above content: The support frame 14 is set up to support the spray agent storage tank 13, so that the spray agent storage tank 13 can be installed stably. Example 6

[0030] Please see Figure 1-6 This utility model provides a technical solution based on Embodiment 1: the exhaust gas inlet pipe 3 is bent downward at one end inside the tower body 2 and extends into the tower base 1. The end of the exhaust gas inlet pipe 3 extending into the tower base 1 is connected to an exhaust gas dispersion disc. The exhaust gas dispersion disc includes a disc cover 18 and an arc-shaped disc body 19 threadedly connected to the lower side of the disc cover 18. The arc-shaped disc body 19 is hollow and has dispersion holes at the edge of its lower surface. The exhaust gas inlet pipe 3 is threadedly connected to the disc cover 18, and the exhaust gas inlet pipe 3 communicates with the interior of the arc-shaped disc body 19.

[0031] Analysis of the above content: After the exhaust gas is introduced into the tower body 2 through the exhaust gas inlet pipe 3, the exhaust gas further enters the tower base 1 downward along the end of the exhaust gas inlet pipe 3. Since there is a spray liquid that falls and accumulates in the tower base 1, the exhaust gas first contacts the spray liquid on the lower side and undergoes a preliminary reaction. Then it floats up and contacts the spray liquid falling on the upper side for further reaction. In this way, the reaction is more complete.

[0032] When the exhaust gas enters the tower base 1 through the dispersion holes of the arc-shaped disc 19, it is restricted by the dispersion holes and dispersed into multiple fine airflows, thus achieving exhaust gas dispersion. In this way, the gas is dispersed into the spray liquid, resulting in better contact.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious 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. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model, and no reference numerals in the claims should be considered as limiting the scope of the claims.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A spray-type waste gas treatment device, characterized in that, include: Tower base (1), tower body (2), exhaust gas inlet pipe (3), exhaust gas outlet pipe (4) and spray system; The tower base (1) is hollow and open at the top. The inner cavity of the tower base (1) stores the spray liquid. The tower body (2) is hollow and open at the top and bottom. The lower opening of the tower body (2) is sealed to the upper opening of the tower base (1). The outlet of the exhaust gas inlet pipe (3) extends into the tower body (2). One end of the exhaust gas outlet pipe (4) is connected to the upper opening of the tower body (2). The spraying system includes a support mesh plate (9) installed inside the tower body (2), a loose packing layer (10) located on the upper part of the support mesh plate (9), a suction pipe (5) and a suction pump (12). One end of the suction pipe (5) is connected to the inside of the tower base (1). A spray output pipe (6) is connected to the suction pipe (5). The spray output pipe (6) extends into the suction pipe (5). A dispersion nozzle (11) is provided at one end of the spray output pipe (6) inside the suction pipe (5). The dispersion nozzle (11) is located on the upper side of the loose packing layer (10). The suction pump (12) is installed on the pipeline of the suction pipe (5).

2. The spray-type waste gas treatment equipment according to claim 1, characterized in that: The dispersion nozzle (11) is petal-shaped and has a hollow structure with uniformly distributed dispersion holes at the bottom.

3. The spray-type waste gas treatment equipment according to claim 1, characterized in that: A ladder (8) is provided on the outer wall of the tower body (2). A through groove is opened on the outer wall of the tower body (2) at the position corresponding to the loose packing layer (10). A cover (7) is detachably connected to the through groove by screws, and a sealing ring is embedded between the cover (7) and the through groove.

4. The spray-type waste gas treatment equipment according to claim 1, characterized in that: It also includes a replenishment mechanism, which includes a spray agent storage tank (13) and a replenishment pipe (15) connected to the bottom of the spray agent storage tank (13). One end of the replenishment pipe (15) away from the spray agent storage tank (13) is connected to a suction pipe (5). A shut-off valve (17) and a check valve (16) are installed on the pipeline of the replenishment pipe (15).

5. The spray-type waste gas treatment equipment according to claim 4, characterized in that: A support frame (14) is provided on the lower side of the outer wall of the spray agent storage tank (13).

6. The spray-type waste gas treatment equipment according to claim 1, characterized in that: The exhaust gas inlet pipe (3) is located inside the tower body (2), with one end bent downwards and extending into the tower base (1).

7. The spray-type waste gas treatment device according to claim 6, characterized in that: The exhaust gas inlet pipe (3) extends into the tower base (1) and is connected to an exhaust gas dispersion plate at one end.

8. The spray-type waste gas treatment device according to claim 7, characterized in that: The exhaust gas dispersion disc includes a disc cover (18) and an arc-shaped disc body (19) threadedly connected to the lower side of the disc cover (18). The arc-shaped disc body (19) is hollow and has dispersion holes at the edge of its lower surface. The exhaust gas inlet pipe (3) is threadedly connected to the disc cover (18) and communicates with the interior of the arc-shaped disc body (19).

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