A spray type smoke absorbing device

Abstract

The utility model relates to exhaust treatment technical field, concretely relates to a kind of spray type smoke absorption device, including shell, circulating pump, the shell upper end is fixedly connected with exhaust port, the shell outside is fixedly connected with air inlet, the shell lower end is fixedly connected with liquid storage tank, the liquid storage tank outside is fixedly connected with liquid inlet, the shell inside is horizontally provided with cyclone plate demister, the shell inside is horizontally provided with filler tray, the circulating pump input end is fixedly connected in the liquid inlet outer end, the circulating pump output end is fixedly connected with spray main pipe, the spray main pipe outside is fixedly connected with spray branch pipe one, the spray branch pipe one outside is fixedly connected with spray branch pipe two, the spray branch pipe two outside is fixedly connected with atomizing nozzle.The utility model, multistage spray structure improves smoke absorption efficiency, cyclone plate demister, can avoid smoke secondary pollution, porous plate, avoid uneven when smoke enters device, influence absorption effect.

Description

Technical Field

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

[0002] In many industrial fields such as fertilizers, electroplating, gunpowder, and explosives, processes such as nitration and decomposition of nitro compounds produce large amounts of nitrate fumes containing high concentrations of nitrogen oxides. These nitrate fumes are highly hazardous, causing not only direct harm to the human body but also serious damage to the surrounding environment.

[0003] Existing spray-type nitrous oxide absorption devices have a small contact area and short contact time between nitrous oxide and absorbent liquid, resulting in low absorption efficiency. Furthermore, the nitrous oxide does not enter the device uniformly, which can easily cause excessively high local concentrations and affect the absorption effect. The purified nitrous oxide still carries droplets, which can easily cause secondary pollution.

[0004] Therefore, a spray-type nitrous oxide absorption device is proposed to solve the problems mentioned above. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a spray-type nitrous smoke absorption device, which can solve the problems of small contact area and short contact time between nitrous smoke and absorption liquid, uneven entry of nitrous smoke into the device, and nitrous smoke still carrying liquid droplets after purification.

[0006] To achieve the above objectives, this utility model provides the following technical solution: It includes a housing and a circulating pump. An exhaust port is fixedly connected to the upper end of the housing, an air inlet is fixedly connected to the outer side of the housing, a liquid storage tank is fixedly connected to the lower end of the housing, and the liquid storage tank communicates with the interior of the housing. An inlet is fixedly connected to the outer side of the liquid storage tank, a drain is fixedly connected to the outer side of the liquid storage tank, a cyclone demister is horizontally arranged inside the housing, and a packing disc is horizontally arranged inside the housing.

[0007] The input end of the circulating pump is fixedly connected to the outer end of the liquid inlet, the output end of the circulating pump is fixedly connected to the main spray pipe, the outer side of the main spray pipe is fixedly connected to the first spray pipe, the outer side of the first spray pipe is fixedly connected to the second spray pipe, and the outer side of the second spray pipe is fixedly connected to the atomizing nozzle.

[0008] Preferably, the two spray branch pipes are equidistant from each other, and there is a length difference between the two spray branch pipes, and the several two spray branch pipes form a near-circular shape.

[0009] Preferably, the spray branch pipes are arranged at equal intervals, and a plurality of the spray branch pipes and the spray branch pipes form a spray layer.

[0010] Preferably, the packing disc includes at least two layers of packing units, and the packing disc and the packing units constitute a packing layer.

[0011] Preferably, a circular groove is formed through the lower surface of the packing disc, and the packing discs are equidistantly arranged between the spray layers.

[0012] Preferably, a perforated plate is fixedly connected to the inner wall of one end of the air inlet, and the perforated plate has uniformly through-hole grooves on its surface, and the grooves are concave.

[0013] Preferably, a reduced diameter opening is fixedly connected to the surface of the perforated plate, the wide end of the reduced diameter opening corresponds to the groove on the surface of the perforated plate, and the middle part of the reduced diameter opening is arc-shaped and concave.

[0014] Compared with the prior art, this utility model provides a spray-type nitrous oxide absorption device, which has the following beneficial effects:

[0015] 1. This spray-type nitrous smoke absorption device, through its multi-stage spray structure and packing disc, significantly increases the contact area and contact time between the absorbent liquid and the nitrous smoke, thereby improving the nitrous smoke absorption efficiency.

[0016] 2. This spray-type nitrous oxide absorption device can effectively remove liquid droplets from the gas through a cyclone demister, thus avoiding secondary pollution.

[0017] 3. This spray-type nitrous oxide absorption device uses a perforated plate to prevent uneven nitrous oxide entry into the device, which could easily cause excessively high local concentrations and affect the absorption effect. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model;

[0020] Figure 3 This is a partially enlarged structural diagram of point A in this utility model;

[0021] Figure 4 This is a schematic diagram of the perforated plate structure of this utility model;

[0022] Figure 5 This is a partially enlarged structural diagram of section B of this utility model.

[0023] In the diagram: 1. Outer shell; 2. Air inlet; 3. Drain outlet; 4. Exhaust outlet; 5. Circulating pump; 6. Liquid inlet; 8. Spray main pipe; 9. Spray branch pipe one; 11. Swirl plate demister; 12. Spray branch pipe two; 13. Liquid storage tank; 14. Atomizing nozzle; 15. Packing disc; 16. Perforated plate; 17. Reduction port. Detailed Implementation

[0024] 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.

[0025] Example:

[0026] Please see Figure 1 - Figure 5 The spray-type nitrous oxide absorption device in this embodiment includes a shell 1 and a circulating pump 5. An exhaust port 4 is fixedly connected to the upper end of the shell 1, an air inlet 2 is fixedly connected to the outer side of the shell 1, a liquid storage tank 13 is fixedly connected to the lower end of the shell 1 and the liquid storage tank 13 is connected to the interior of the shell 1, an inlet 6 is fixedly connected to the outer side of the liquid storage tank 13, an outlet 3 is fixedly connected to the outer side of the liquid storage tank 13, a cyclone demister 11 is horizontally arranged inside the shell 1, and a packing disc 15 is horizontally arranged inside the shell 1.

[0027] The input end of the circulating pump 5 is fixedly connected to the outer end of the liquid inlet 6. The output end of the circulating pump 5 is fixedly connected to the spray main pipe 8. The outer side of the spray main pipe 8 is fixedly connected to the first spray branch pipe 9. The outer side of the first spray branch pipe 9 is fixedly connected to the second spray branch pipe 12. The outer side of the second spray branch pipe 12 is fixedly connected to the atomizing nozzle 14.

[0028] The fumes to be treated enter the outer shell 1 through the air inlet 2. Since the interior of the outer shell 1 is sealed, the fumes flow vertically upward under the pressure difference and first come into contact with the packing disc 15 located below. The multi-layer packing units intersect with each other to form a complex channel structure. The fumes are fully dispersed when passing through these channels and the flow path is extended, which creates favorable conditions for subsequent contact with the absorbent liquid.

[0029] At the same time, the circulation pump 5 starts, and the pre-prepared absorbent liquid in the storage tank 13 is drawn out through the liquid inlet 6. The absorbent liquid is transported to the spray main pipe 8 through the pipeline, and then evenly distributed to each spray branch pipe 9. Guided by the spray branch pipe 12, it is finally sprayed out by the atomizing nozzle 14 at the bottom. The absorbent liquid sprayed by the atomizing nozzle 14 forms a wide-coverage and uniformly dense atomized spray zone. The fine droplets fall downwards under the action of gravity and come into full contact with the exhaust gas, absorbing the pollutants in the exhaust gas. The absorbed smoke continues to rise and is removed by the cyclone demister 11, and finally discharged from the exhaust port 4. The absorbed liquid falls back into the storage tank 13 after spraying, realizing recycling. When the pH of the absorbent liquid does not meet the requirements, the waste liquid is discharged through the drain port 3 and new absorbent liquid is added.

[0030] The spray branch pipes 12 are equidistantly distributed, and there is a length difference between the spray branch pipes 12. Several spray branch pipes 12 form a near-circular shape.

[0031] The spray branch pipes 19 are arranged at equal intervals, and several spray branch pipes 19 and spray branch pipes 212 together form a spray layer.

[0032] The stuffing disc 15 includes at least two layers of packing units, and the stuffing disc 15 and the packing units together form a packing layer;

[0033] A circular groove is provided through the lower surface of the packing disc 15, and the packing discs 15 are equidistantly arranged between the spray layers;

[0034] After the nitrous oxide exhaust gas enters the outer shell 1 through the air inlet 2, it first enters the lower packing layer area. At this time, the exhaust gas will first pass through the circular grooves on the lower surface of the packing disc 15. The evenly distributed circular grooves form a diversion port, cutting the exhaust gas that may have flowed in a concentrated manner into multiple fine airflows, forcing them to diffuse to various corners of the packing disc 15. The multi-layer packing units inside the packing disc 15 are intertwined, which prolongs the residence time of the exhaust gas in the packing layer, preparing for the subsequent absorption reaction.

[0035] As the exhaust gas passes through the lower packing layer, the upper lower spray layer is already in operation. The main spray pipe 8 evenly distributes the absorbent liquid to each equidistantly arranged spray branch pipe 9, and then delivers it to the atomizing nozzles 14 with a near-circular distribution through spray branch pipes 12 of different lengths. The near-circular layout perfectly fits the cylindrical space of the outer shell 1, ensuring that the atomized absorbent liquid sprayed from the nozzles can cover the entire lower packing layer without any dead angles. When the absorbent liquid droplets and the nitrifying exhaust gas meet in the gaps between the packing, the two are fully mixed with the huge contact area provided by the packing. The pollutants in the nitrifying exhaust gas quickly react chemically with the absorbent liquid, and the initial purification is completed.

[0036] The exhaust gas, after being treated in the lower layer, continues to flow upward and enters the upper packing layer. Similar to the lower layer, the exhaust gas is dispersed again through the circular grooves of the upper packing disc 15 and comes into deep contact with the upper packing unit. At this time, the upper spray layer is activated simultaneously. The absorbent liquid is uniformly covered through the roughly circularly distributed spray branch pipes 12, which captures the pollutants remaining in the exhaust gas a second time. The multi-layer interactive mode allows the pollutants to be gradually stripped away through repeated gas-liquid contact, and the purification level is continuously improved.

[0037] Ultimately, the exhaust gas, after being deeply purified by two layers of packing and two layers of spraying, still carries a small amount of unseparated absorbent liquid droplets. When these gaseous droplets rise to the cyclone demister 11, the high-speed airflow adheres to the surface of the cyclone blades under the guidance of the blades, and then drips back into the storage tank 13 along the blades, achieving complete gas-liquid separation. At this point, the clean gas is smoothly discharged from the exhaust port 4 at the top of the outer shell 1. The entire treatment process is both efficient and thorough, ensuring that the exhaust gas meets emission standards.

[0038] A perforated plate 16 is fixedly connected to the inner wall of one end of the air inlet 2. The perforated plate 16 has uniformly through-hole grooves on its surface, and the grooves are concave.

[0039] A reduced diameter opening 17 is fixedly connected to the surface of the perforated plate 16. The wide end of the reduced diameter opening 17 corresponds to the groove on the surface of the perforated plate 16, and the middle part of the reduced diameter opening 17 is arc-shaped and concave.

[0040] When the nitrous oxide exhaust gas to be treated flows in from the inlet 2, it first contacts the perforated plate 16. The originally concentrated airflow is dispersed into various concave grooves. The airflow velocity is initially reduced by the narrowing of the groove diameter. Subsequently, the airflow enters the corresponding constriction port 17. The arc-shaped concave central structure guides the airflow along the arc, reducing turbulence. At the same time, it further narrows the airflow and makes its direction more consistent, so that the nitrous oxide exhaust gas is perpendicular to the inside of the outer shell 1. After being treated by the perforated plate 16 and the constriction port 17, the exhaust gas is no longer in a chaotic jet state, but enters the inside of the outer shell 1 at a uniform and stable speed. This avoids the problem of insufficient contact with the absorbent liquid due to excessively fast local airflow, laying the foundation for efficient purification when flowing through the lower packing layer.

[0041] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. As long as they can achieve their beneficial effects, they can be implemented. Therefore, this embodiment will not elaborate on their specific structural composition and working principle.

[0042] 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 nitrous oxide absorption device, characterized in that: Includes a housing (1) and a circulating pump (5). The upper end of the housing (1) is fixedly connected to an exhaust port (4), the outer side of the housing (1) is fixedly connected to an air inlet (2), the lower end of the housing (1) is fixedly connected to a liquid storage tank (13), and the liquid storage tank (13) is connected to the inside of the housing (1). The outer side of the liquid storage tank (13) is fixedly connected to a liquid inlet (6), the outer side of the liquid storage tank (13) is fixedly connected to a liquid outlet (3), a cyclone demister (11) is horizontally arranged inside the housing (1), and a packing disc (15) is horizontally arranged inside the housing (1). The input end of the circulating pump (5) is fixedly connected to the outer end of the liquid inlet (6), and the output end of the circulating pump (5) is fixedly connected to the spray main pipe (8). The outer side of the spray main pipe (8) is fixedly connected to the first spray branch pipe (9), the outer side of the first spray branch pipe (9) is fixedly connected to the second spray branch pipe (12), and the outer side of the second spray branch pipe (12) is fixedly connected to the atomizing nozzle (14). The spray branch pipes (12) are equidistantly distributed and there is a length difference between the spray branch pipes (12). Several spray branch pipes (12) form a near-circular shape. The spray branch pipes (9) are arranged at equal intervals, and several spray branch pipes (9) and spray branch pipes (12) together form a spray layer. A perforated plate (16) is fixedly connected to the inner wall of one end of the air inlet (2). The perforated plate (16) has uniformly perforated grooves on its surface, and the grooves are concave. The perforated plate (16) has a narrowed opening (17) fixedly connected to its surface. The wide end of the narrowed opening (17) corresponds to the groove on the surface of the perforated plate (16), and the middle part of the narrowed opening (17) is arc-shaped and concave.

2. The spray-type nitrous oxide absorption device according to claim 1, characterized in that: The packing disc (15) includes at least two layers of packing units, and the packing disc (15) and the packing units constitute a packing layer.

3. The spray-type nitrous oxide absorption device according to claim 2, characterized in that: The lower surface of the packing disc (15) is provided with a circular groove, and the packing disc (15) is equidistantly arranged between the spray layers.

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