Acid-base waste gas treatment device

Abstract

The utility model discloses an acid-base waste gas treatment device which is characterized in that a plurality of layers of fillers and a plurality of layers of spray pipes are arranged in a treatment tower, and the spray pipes and the fillers are arranged at intervals; a water distributor is arranged in the treatment tower and located above the uppermost spraying pipe and the filler, the water distributor comprises a water inlet pipe and a plurality of water distribution branch pipes, the water distribution branch pipes are connected to one end of the water inlet pipe, and the other end of the water inlet pipe penetrates out of the treatment tower; a plurality of spray holes are formed in the water distribution branch pipes. According to the utility model, each layer of filler below is flushed regularly through the water distributor, so that the problems of filler crystallization and caking are prevented, the waste gas treatment effect is ensured, the overhaul period is prolonged, and the overhaul cost is reduced; meanwhile, the water distributor can also be used for regularly washing each layer of spraying pipes and baffle plates, so that the service time of the spraying pipes and the baffle plates is prolonged, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of waste gas treatment equipment, in particular to an acidic and alkaline waste gas treatment device. Background Art

[0002] Existing waste gas treatment towers typically utilize a chemical reaction of acid-base neutralization to absorb acidic and alkaline waste gases and then spray corresponding alkaline and acidic agents to induce neutralization and treat the waste gases. Most waste gas treatment towers utilize packed towers, adding packing layers and spray layers within the tower body to increase the contact time between the spray liquid and the waste gases, effectively absorbing and treating the waste gases. However, some waste gas components are easily adsorbed and scaled on the packing surface, while some alkaline agents have poor fluidity and are also prone to scaling on the packing surface. Over time, the packing layer tends to clump, compromising waste gas treatment effectiveness, resulting in short maintenance cycles and high maintenance costs. Utility Model Content

[0003] In response to the shortcomings of the above-mentioned existing waste gas treatment devices, the applicant provides a rationally structured acid-base waste gas treatment device, in which a water distributor is arranged at the top of the treatment tower. The packing layer is regularly flushed through the water distributor to prevent the problems of packing crystallization and agglomeration, thereby ensuring the waste gas treatment effect, extending the maintenance cycle, and reducing the maintenance cost.

[0004] The technical solutions adopted in this utility model are as follows:

[0005] A device for treating acidic and alkaline waste gas, wherein several layers of fillers and several layers of spray pipes are arranged in a treatment tower, and the spray pipes and the fillers are arranged at intervals; a water distributor is arranged in the treatment tower, above the topmost spray pipe and the fillers, and the water distributor includes a water inlet pipe and several water distribution branches, and the several water distribution branches are connected to one end of the water inlet pipe, and the other end of the water inlet pipe passes through the treatment tower; a plurality of spray holes are opened on the water distribution branch pipe.

[0006] As a further improvement of the above technical solution:

[0007] A plurality of water distribution branch pipes are horizontally radially arranged on the water inlet pipe; the water distribution branch pipes are connected to a connecting piece, and the connecting piece can be rotatably connected to the water inlet pipe.

[0008] The top surface of the connecting piece is a closed surface.

[0009] The spray holes of the water distribution branch pipe are opened on the lower half of the pipe wall, and the spray holes are offset to one side at a certain angle.

[0010] The spray holes of each water distribution branch pipe are offset in the same direction; the angle α between the central axis of the spray hole and the vertical line is 15 to 75 degrees.

[0011] The apertures of the plurality of spray holes of the water distribution branch pipe are the same; or the aperture of the spray hole close to the connecting piece is smaller than the aperture of the spray hole close to the plug.

[0012] The water distribution branch pipe is provided with a plug at one end away from the connecting piece.

[0013] The water inlet pipe includes a horizontal pipe and a vertical pipe. One end of the horizontal pipe passes through the wall of the treatment tower, and the other end is connected to the vertical pipe. The vertical pipe is vertically arranged in the center of the treatment tower; a number of water distribution branches are connected to the vertical pipe.

[0014] In the treatment tower, several baffles are installed between the water distributor and the top spray pipe.

[0015] A reagent pool is set at the bottom of the treatment tower, a tower cap is set at the top of the tower, an air inlet is opened at the lower part of the tower body of the treatment tower, an exhaust port is opened on the top of the tower cap, and a liquid outlet and a slag discharge port connected to the reagent pool are set at the bottom of the tower body; a pH meter and a thermometer are set at the lower part of the tower body of the treatment tower, and an air pressure detector is set in the middle of the tower body.

[0016] The beneficial effects of the utility model are as follows:

[0017] The utility model uses a water distributor to regularly flush the layers of fillers below, thereby preventing the problems of filler crystallization and agglomeration, ensuring the exhaust gas treatment effect, extending the maintenance cycle, and reducing maintenance costs; the water distributor can also regularly flush the spray pipes and baffles on each layer, extending the service life of the spray pipes and baffles, and reducing maintenance costs.

[0018] The water distribution branch pipe of the utility model generates a rotational motion when spraying water, thereby realizing rotary flushing, so that the flushing covers the entire cross section, flushing is more sufficient and thorough, and the flushing effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is the main view of the utility model.

[0020] Figure 2 for Figure 1 Cross-sectional view of section AA.

[0021] Figure 3 for Figure 1 The arrow in the cross-sectional view of section BB indicates the direction of rotation of the water distribution branch pipe.

[0022] Figure 4 This is an axial cross-sectional view of the water distribution branch pipe.

[0023] Figure 5 It is a radial cross-sectional view of the water distribution branch pipe.

[0024] In the figure: 1. Treatment tower; 11. Reagent tank; 12. Tower cap; 13. Air inlet; 14. Exhaust port; 15. Liquid outlet; 16. Slag outlet; 17. Manhole; 2. Filler; 3. Spray pipe; 4. Baffle; 5. Water distributor; 51. Water inlet pipe; 511. Horizontal pipe; 512. Vertical pipe; 52. Water distribution branch pipe; 521. Plug; 522. Spray hole; 53. Connector; 6. pH meter; 7. Thermometer; 8. Air pressure detector. DETAILED DESCRIPTION

[0025] The specific implementation of the present utility model will be described below with reference to the accompanying drawings.

[0026] like Figure 1 、 Figure 2 As shown, the treatment tower 1 of the present invention has a reagent pool 11 at the bottom and a tower cap 12 at the top. An air inlet 13 is provided at the bottom of the tower body of the treatment tower 1, an exhaust port 14 is provided at the top of the tower cap 12, and a liquid outlet 15 and a slag outlet 16 are provided at the bottom of the tower body, which are connected to the reagent pool 11. Several manholes 17 are provided on the treatment tower 1 for operators to enter and exit the treatment tower 1, facilitating operations such as installation, maintenance, and safety inspections.

[0027] The treatment tower 1 is equipped with several layers of packing 2 and several layers of spray pipes 3. The spray pipes 3 are connected to the liquid outlet 15 of the reagent tank 11 via liquid inlet pipes. The spray pipes 3 are spaced apart from the packing 2. The top spray pipe 3 is located above the topmost packing 2 layer, and the bottom spray pipe 3 is located above the bottommost packing 2 layer. Several baffles 4 are installed at the top of the treatment tower 1, above the topmost spray pipe 3.

[0028] like Figure 2 、 Figure 3 As shown, a water distributor 5 is provided in the treatment tower 1 above the baffle 4. The water distributor 5 is located above each layer of filler 2 and the baffle 4. The water distributor 5 is opened regularly to regularly flush the layers of filler 2 below to prevent the problems of crystallization and agglomeration of the filler 2, thereby ensuring the waste gas treatment effect, extending the maintenance cycle, and reducing the maintenance cost. The water distributor 5 can also regularly flush the spray pipes 3 and baffles 4 on each layer to extend the service life of the spray pipes 3 and baffles 4 and reduce maintenance costs.

[0029] like Figure 2 、 Figure 3 As shown, the water distributor 5 includes a water inlet pipe 51 and several water distribution branches 52. The water inlet pipe 51 includes a horizontal pipe 511 and a vertical pipe 512. One end of the horizontal pipe 511 passes through the wall of the treatment tower 1, and the other end is connected to the vertical pipe 512. The vertical pipe 512 is vertically arranged in the center of the treatment tower 1. Figure 3As shown, a plurality of water distribution branches 52 are rotatably connected to the top of the vertical pipe 512 through a connector 53. The plurality of water distribution branches 52 are evenly arranged on the vertical pipe 512 in a horizontal radial pattern. The water distribution branches 52 are fixedly connected to the connector 53, and the connector 53 is rotatably connected to the vertical pipe 512 through a bearing. The top surface of the connector 53 is a closed surface. Figure 4 As shown, the water distribution branch pipe 52 is provided with a plug 521 at the end away from the connector 53 to seal the outer end of the water distribution branch pipe 52. A number of spray holes 522 are provided on the pipe wall of the water distribution branch pipe 52, spaced apart along the axial direction. The aperture of the spray hole 522 close to the connector 53 is smaller than the aperture of the spray hole 522 close to the plug 521. The aperture of the spray hole 522 away from the connector 53 is larger, the water spray volume is larger, the water pressure reaction is greater, the water distribution branch pipe 52 rotates faster, and the flushing effect is better. Of course, in other embodiments, all the spray holes 522 can also be set to the same aperture. Figure 5 As shown, the spray holes 522 are formed on the lower half of the water distribution branch pipe 52. The spray holes 522 are offset from the vertical position to one side at a certain angle, and the angle α between the central axis of the spray hole 522 and the vertical line is 15 to 75 degrees. All the spray holes 522 of all the water distribution branch pipes 52 are offset in the same direction. When water is sprayed obliquely downward from the spray holes 522, the water distribution branch pipes 52 rotate around the center of the vertical pipe 512 under the reaction of the water pressure, as shown in FIG. Figure 3 As shown, when the spray hole 522 is offset toward the front, the water distribution branch pipe 52 rotates clockwise during flushing; when the spray hole 522 is offset toward the rear, the water distribution branch pipe 52 rotates counterclockwise during flushing. By aligning the spray hole 522 to one side, the water distribution branch pipe 52 generates a rotational motion when spraying water, achieving rotary flushing, covering the entire cross-section, and providing a more thorough and effective flushing effect.

[0030] like Figure 2 As shown, the lower portion of treatment tower 1 is equipped with a pH meter 6 and a thermometer 7, and a pressure gauge 8 is located in the middle of the tower. pH meter 6 monitors the pH of the liquid in reagent tank 11. When the measured pH exceeds the set value, the reagent needs to be replaced. The thermometer 7 monitors the temperature of the exhaust gas within the tower, and the pressure gauge 8 monitors the pressure within the tower. Based on the measured temperature and pressure values, the system's treatment process parameters are adjusted to ensure the exhaust gas treatment effect.

[0031] During actual use of the present invention, waste gas enters the treatment tower 1 through the air inlet 13. The spray pipe 3 sprays the reagent into the treatment tower 1 to purify the waste gas, and the purified waste gas is discharged through the exhaust port 14. The sprayed reagent flows downward back to the reagent pool 11 and is then transported to the spray pipe 3 through the pipeline, and the cycle is repeated. During use of the treatment tower 1, the water distributor 5 is periodically opened to regularly flush the packing 2, spray pipe 3, and baffle 4 in the treatment tower 1.

[0032] The above description is an explanation of the present invention, not a limitation of the present invention. The present invention may be modified in any form without violating the spirit of the present invention.

Claims

1. An acidic and alkaline waste gas treatment device, wherein a treatment tower (1) is provided with a plurality of layers of fillers (2) and a plurality of layers of spray pipes (3), and the spray pipes (3) and the fillers (2) are arranged at intervals; characterized in that: A water distributor (5) is provided in the treatment tower (1) above the uppermost spray pipe (3) and the filler (2). The water distributor (5) includes a water inlet pipe (51) and a plurality of water distribution branches (52). The plurality of water distribution branches (52) are connected to one end of the water inlet pipe (51), and the other end of the water inlet pipe (51) passes through the treatment tower (1); a plurality of spray holes (522) are provided on the water distribution branch pipe (52).

2. The acidic and alkaline waste gas treatment device according to claim 1, characterized in that: A plurality of water distribution branch pipes (52) are horizontally radially arranged on the water inlet pipe (51); the water distribution branch pipes (52) are connected to a connecting piece (53), and the connecting piece (53) is rotatably connected to the water inlet pipe (51).

3. The acidic and alkaline waste gas treatment device according to claim 2, characterized in that: The top surface of the connecting member (53) is a closed surface.

4. The acidic and alkaline waste gas treatment device according to claim 1, characterized in that: The spray hole (522) of the water distribution branch pipe (52) is provided on the lower half of the pipe wall, and the spray hole (522) is offset to one side at a certain angle.

5. The acidic and alkaline waste gas treatment device according to claim 3, characterized in that: The spray holes (522) of each water distribution branch pipe (52) are offset in the same direction; and the angle α between the central axis of the spray hole (522) and the vertical line is 15 to 75 degrees.

6. The acidic and alkaline waste gas treatment device according to claim 1, characterized in that: The apertures of the plurality of spray holes (522) of the water distribution branch pipe (52) are the same; or the aperture of the spray hole (522) close to the connecting piece (53) is smaller than the aperture of the spray hole (522) close to the plug (521).

7. The acidic and alkaline waste gas treatment device according to claim 1, characterized in that: The water distribution branch pipe (52) is provided with a plug (521) at one end away from the connecting piece (53).

8. The acidic and alkaline waste gas treatment device according to claim 1, characterized in that: The water inlet pipe (51) includes a horizontal pipe (511) and a vertical pipe (512). One end of the horizontal pipe (511) passes through the wall of the treatment tower (1), and the other end is connected to the vertical pipe (512). The vertical pipe (512) is vertically arranged in the center of the treatment tower (1); a plurality of water distribution branch pipes (52) are connected to the vertical pipe (512).

9. The acidic and alkaline waste gas treatment device according to claim 1, characterized in that: In the treatment tower (1), a plurality of baffles (4) are provided between the water distributor (5) and the uppermost spray pipe (3).

10. The acidic and alkaline waste gas treatment device according to claim 1, characterized in that: A reagent pool (11) is provided at the bottom of the treatment tower (1), a tower cap (12) is provided at the top of the tower, an air inlet (13) is provided at the lower part of the tower body of the treatment tower (1), an exhaust port (14) is provided at the top of the tower cap (12), and a liquid outlet (15) and a slag outlet (16) communicating with the reagent pool (11) are provided at the bottom of the tower body; a pH meter (6) and a thermometer (7) are provided at the lower part of the tower body of the treatment tower (1), and an air pressure detector (8) is provided in the middle of the tower body.

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