Acid mist purification tower capable of circularly washing

Abstract

The utility model relates to the technical field of purification towers, and discloses an acid mist purification tower capable of circularly washing, which comprises a tower body, gas inlet components are arranged at the bottom of the side wall of the tower body and in the tower body, dosing components are arranged at the middle top and the outer side of the side wall of the tower body, a filler component penetrates through the middle of the side wall of the tower body, and the filler component is arranged in the tower body. A spraying assembly is arranged at the top of the tower body and comprises a cover body, a branch pipe and a spraying head. A complete and efficient acid mist purification process is formed by reasonably arranging the gas inlet assembly, the dosing assembly, the filler assembly, the spraying assembly and other structures on the tower body, the gas inlet assembly can ensure that acid mist waste gas smoothly enters the tower, and a foundation is laid for subsequent treatment; the chemical adding assembly can supplement chemicals to the water tank according to needs, the good purification performance of washing liquid is maintained, continuous and effective treatment of acid mist is guaranteed, the gas-liquid contact area is increased through the filler assembly, and acidic substances in waste gas can be absorbed and neutralized to a certain degree in the initial stage.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of purification tower, concretely is a kind of acid mist purification tower of recyclable washing. BACKGROUND

[0002] In the industrial production process, such as chemical industry, electroplating, metallurgy and other industries, a large amount of waste gas containing acidic substances, i.e. acid mist, will be generated.

[0003] The adsorption capacity of traditional acid mist treatment adsorption material is limited, and the adsorbent needs to be replaced frequently, which is costly and inefficient. The gas-liquid contact in some devices is not sufficient, resulting in incomplete absorption of acidic substances and a significant reduction in purification effect. As the treatment process progresses, the concentration of the scrubbing liquid decreases, and the purification capacity gradually weakens, making it impossible to continuously and stably purify acid mist efficiently. In addition, the separation effect of liquid droplets in the purified gas is poor, which can easily cause secondary pollution, and the discharged gas may still contain a large amount of impurities, which does not meet the increasingly stringent environmental emission standards. SUMMARY

[0004] The utility model aims to solve the problems of limited adsorption capacity of traditional acid mist treatment adsorption material, frequent replacement of adsorbent, insufficient gas-liquid contact, difficulty in maintaining the concentration of scrubbing liquid, weakening of purification capacity, poor separation effect of liquid droplets, and difficulty in meeting the standards of discharged gas. The utility model provides a recyclable acid mist purification tower.

[0005] To achieve the above-mentioned purpose, the utility model specifically adopts the following technical solutions:

[0006] A recyclable acid mist purification tower, comprising a tower body, an air inlet assembly is provided at the bottom of the side wall of the tower body and inside the tower body, a dosing assembly is provided at the top of the side wall and outside of the tower body, a packing assembly is penetrated through the middle of the side wall of the tower body, a spraying assembly is provided at the top of the tower body, the spraying assembly comprises a cover, a pipe and a spray head, the pipe is arranged at the bottom side of the cover, the top side of the spray head is fixedly connected to the bottom side of the pipe, a water tank is fixedly connected to the bottom of the dosing assembly, an exhaust pipe is fixedly provided at the top side of the spraying assembly, an observation window and a controller are provided at the side wall of the tower body, a grille demister is provided at the middle of the side wall of the spraying assembly, and a filter mesh is provided inside the grille demister.

[0007] Further, the air inlet assembly comprises a fan and an air pipe, the inner end of the air pipe is fixedly connected to the output end of the fan, and the fan works to draw the waste gas into the bottom of the tower body through the air pipe.

[0008] Further, the dosing assembly comprises a pump body, a liquid tank, a liquid inlet pipe and a water pipe, the bottom side of the liquid tank is located at the top side of the water tank, the bottom end of the water pipe is fixedly connected to the top of the water tank, and the pump body delivers the washing liquid in the liquid tank to the water tank through the water pipe to maintain the concentration and amount of the circulating washing liquid.

[0009] Further, the bottom end of the pump body and the top inner side of the liquid tank are fixedly connected, the bottom end of the liquid inlet pipe and the top of the liquid tank are fixedly connected, and the top of the water pipe is fixedly connected to the top of the liquid tank, and the pump body delivers the washing liquid in the liquid tank (supplemented with medicament through the liquid inlet pipe) to the water tank through the water pipe.

[0010] Further, the filler assembly comprises a tank cover and a filler grid, the inner side of the tank cover is fixedly connected to the outer side end of the filler grid, and during the rising of the waste gas, the waste gas first passes through the filler assembly and is preliminarily contacted with the washing liquid flowing down from the surface of the filler grid in the filler grid.

[0011] Further, the side wall of the grid mist eliminator penetrates the outer side wall of the spray head, and the top side of the grid mist eliminator is arranged at the bottom side of the cover body, the branch pipe below the cover body delivers the washing liquid in the water tank to the spray head, and the spray head uniformly sprays the washing liquid in the tower body.

[0012] Further, part of the spray head is uniformly arranged at the bottom side of the grid mist eliminator, the pipeline branched in the branch pipe penetrates the inside of the grid mist eliminator and is connected to the top of the spray head, and part of the spray head is below the grid mist eliminator, so that the rising waste gas is fully contacted with the fine washing liquid mist again.

[0013] Compared with the prior art, the acid mist purification tower with circulating washing provided by the present application has the following beneficial effects:

[0014] The acid mist purification tower with circulating washing, by reasonably arranging the air inlet assembly, the dosing assembly, the filler assembly and the spraying assembly in the tower body, forms a perfect and efficient acid mist purification process, the air inlet assembly can ensure that the acid mist waste gas smoothly enters the tower, and lays a foundation for subsequent treatment, the dosing assembly can supplement medicament to the water tank as needed, maintains the good purification performance of the washing liquid, and guarantees the continuous and effective treatment of the acid mist, the filler assembly increases the gas-liquid contact area, so that the acidic substances in the waste gas can be absorbed and neutralized to a certain extent in the initial stage, the spraying assembly cooperates with the cover body, the branch pipe and the spray head to uniformly spray the washing liquid, so that the waste gas is fully contacted and reacted with the washing liquid, and the acid mist is deeply purified, and the grid mist eliminator and the filter screen arranged in the grid mist eliminator effectively intercept the liquid droplets carried by the purified gas, avoid secondary pollution, and ensure that the discharged gas meets the environmental protection requirements. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1It is a whole structure connection schematic diagram of the utility model;

[0016] Figure 2 It is a whole structure connection left side schematic diagram of the utility model;

[0017] Figure 3 It is a structure display top side schematic diagram of the utility model air inlet assembly in the tower body;

[0018] Figure 4 It is a structure refinement schematic diagram of the utility model dosing assembly;

[0019] Figure 5 It is an internal structure display diagram of the utility model filler assembly;

[0020] Figure 6 It is a bottom side schematic diagram of the utility model spray assembly internal related structure.

[0021] In the drawing: 1, tower body; 2, air inlet assembly; 21, fan; 22, breather pipe; 3, dosing assembly; 31, pump body; 32, liquid storage tank; 33, liquid inlet pipe; 34, water pipe; 4, filler assembly; 41, tank cover; 42, filler grid; 5, spray assembly; 51, cover body; 52, sub-pipe; 53, spray head; 6, water tank; 7, exhaust pipe; 8, observation window; 9, controller; 10, grid demister; 11, air filter net. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. Embodiment one:

[0023] As shown in Figures 1-6 A circulating washing acid mist purification tower, comprising a tower body 1, an air inlet assembly 2 is arranged at the bottom of the side wall of the tower body 1 and the inside of the tower body 1, a dosing assembly 3 is arranged at the top of the side wall and the outside of the tower body 1, a filler assembly 4 penetrates through the middle of the side wall of the tower body 1, a spray assembly 5 is arranged at the top of the tower body 1, a water tank 6 is fixedly connected to the bottom of the dosing assembly 3, an exhaust pipe 7 is fixedly arranged at the top side of the spray assembly 5, an observation window 8 and a controller 9 are arranged at the side wall of the tower body 1, a grid demister 10 is arranged at the middle of the side wall of the spray assembly 5, and an air filter net 11 is arranged in the grid demister 10.

[0024] As shown in Figure 2 and Figure 3As shown, the air inlet assembly 2 includes a fan 21 and a vent pipe 22, the inner end of the vent pipe 22 is fixedly connected to the output end of the fan 21, the acid mist exhaust gas enters the tower body 1 through the air inlet assembly 2; the fan 21 works, and the exhaust gas is sucked into the bottom of the tower body through the vent pipe 22;

[0025] As shown in Figure 1 , Figure 2 and Figure 4 , the dosing assembly 3 includes a pump body 31, a liquid tank 32, a liquid inlet pipe 33 and a water pipe 34, the bottom side of the liquid tank 32 is located at the top side of the water tank 6, the bottom end of the water pipe 34 is fixedly connected to the top of the water tank 6, the bottom end of the pump body 31 and the top inner side of the liquid tank 32 are fixedly connected, the bottom end of the liquid inlet pipe 33 and the top of the liquid tank 32 are fixedly connected, the top of the water pipe 34 is fixedly connected to the top of the liquid tank 32, the dosing assembly 3 starts to work, the pump body 31 transports the scrubbing liquid (supplemented with reagent through the liquid inlet pipe 33) in the liquid tank 32 to the water tank 6 through the water pipe 34 to maintain the concentration and amount of circulating scrubbing liquid, in this process, after the scrubbing liquid absorbs the acidic components in the exhaust gas, it falls back to the bottom of the tower body and is pumped back to the water tank 6 by the pump body 31 for recycling;

[0026] As shown in Figure 1 and Figure 5 , the filler assembly 4 includes a cover 41 and a filler grid 42, the inner side of the cover 41 is fixedly connected to the outer side end of the filler grid 42, during the upward movement of the exhaust gas, it first passes through the filler assembly 4, the exhaust gas is preliminarily contacted with the scrubbing liquid flowing down from the surface of the filler grid 42 in the filler grid 42, the filler grid 42 increases the gas-liquid contact area, so that part of the acidic substances in the exhaust gas are absorbed and neutralized. Example two:

[0027] As shown in Figure 1 , Figure 2 , Figure 5 and Figure 6 , the spray assembly 5 includes a cover 51, a branch pipe 52 and a spray head 53, the branch pipe 52 is arranged at the bottom side of the cover 51, the top side of the spray head 53 is fixedly connected to the bottom side of the branch pipe 52, part of the spray head 53 is uniformly arranged at the bottom side of the grid mist eliminator 10, the branch pipe 52 is connected through the inside of the grid mist eliminator 10 and the top of the spray head 53, the side wall of the grid mist eliminator 10 is connected through the outer side wall of the spray head 53, the top side of the grid mist eliminator 10 is arranged at the bottom side of the cover 51, the spray assembly 5 is started, the branch pipe 52 below the cover 51 transports the scrubbing liquid in the water tank 6 to the spray head 53, the spray head 53 uniformly sprays the scrubbing liquid in the tower body; part of the spray head 53 is below the grid mist eliminator 10, so that the upward exhaust gas is again fully contacted with the fine scrubbing liquid mist, further neutralization reaction occurs, thereby deeply purifying the acid mist.

[0028] Working principle: asFigures 1-6 As shown, first, the acid mist exhaust gas enters the tower body 1 through the air inlet assembly 2; the fan 21 works to draw the exhaust gas into the bottom of the tower body through the air pipe 22; at this time, the dosing assembly 3 starts to work, the pump body 31 delivers the scrubbing liquid in the liquid tank 32 (supplemented by the liquid inlet pipe 33) to the water tank 6 through the water pipe 34 to maintain the concentration and amount of the circulating scrubbing liquid;

[0029] Then, during the rising of the exhaust gas, it first passes through the packing assembly 4, and the exhaust gas is preliminarily contacted with the scrubbing liquid flowing down from the surface of the packing grid 42 in the packing grid 42, and the packing grid 42 increases the gas-liquid contact area, so that part of the acidic substances in the exhaust gas are absorbed and neutralized;

[0030] Then, the spraying assembly 5 starts to work, the branch pipe 52 below the cover body 51 delivers the scrubbing liquid in the water tank 6 to the spray head 53, and the spray head 53 uniformly sprays the scrubbing liquid in the tower body; part of the spray head 53 is below the grid mist eliminator 10, so that the rising exhaust gas is again fully contacted with the fine scrubbing liquid droplets, further neutralization reaction occurs, thereby deeply purifying the acid mist; in this process, after the scrubbing liquid absorbs the acidic components in the exhaust gas, it falls back to the bottom of the tower body, and is then pumped back to the water tank 6 by the pump body 31 for recycling;

[0031] Finally, the gas after the purification treatment continues to rise, passes through the grid mist eliminator 10, and the filter screen 11 in the grid mist eliminator 10 intercepts and separates the liquid droplets entrained in the gas to prevent secondary pollution caused by the liquid droplets discharged with the gas, and the purified gas is discharged from the tower body 1 through the exhaust pipe 7; during the entire working process, the running condition in the tower can be observed through the observation window 8, and the controller 9 can control and adjust the operating parameters of each assembly such as the fan 21 and the pump body 31, so as to ensure that the purification tower stably and efficiently operates, and the discharged gas meets the environmental protection requirements.

Claims

1. A recyclable and washable acid mist purification tower, comprising a tower body (1), characterized in that: An air intake assembly (2) is provided at the bottom of the side wall of the tower body (1) and inside the tower body (1). A dosing assembly (3) is provided at the top and outside of the side wall of the tower body (1). A packing assembly (4) passes through the middle of the side wall of the tower body (1). A spraying assembly (5) is provided at the top of the tower body (1). The spray assembly (5) includes a cover (51), a branch pipe (52) and a spray head (53). The branch pipe (52) is located on the bottom side of the cover (51). The top side of the spray head (53) is fixedly connected to the bottom side of the branch pipe (52). A water tank (6) is fixedly connected to the bottom of the dosing assembly (3). An exhaust pipe (7) is fixedly installed on the top side of the spray assembly (5). An observation window (8) and a controller (9) are provided on the side wall of the tower body (1). A grid demister (10) is provided in the middle of the side wall of the spray assembly (5). A filter screen (11) is provided inside the grid demister (10).

2. The recyclable and washable acid mist purification tower according to claim 1, characterized in that: The air intake assembly (2) includes a fan (21) and a vent pipe (22), the inner end of which is fixedly connected to the output end of the fan (21).

3. The recyclable and washable acid mist purification tower according to claim 1, characterized in that: The dosing assembly (3) includes a pump body (31), a storage tank (32), an inlet pipe (33), and a water pipe (34). The bottom side of the storage tank (32) is located on the top side of the water tank (6), and the bottom end of the water pipe (34) is fixedly connected to the top of the water tank (6).

4. The recyclable and washable acid mist purification tower according to claim 3, characterized in that: The bottom end of the pump body (31) is fixedly connected to the top inner side of the liquid storage tank (32), the bottom end of the liquid inlet pipe (33) is fixedly connected to the top of the liquid storage tank (32), and the top of the water pipe (34) is fixedly connected to the top of the liquid storage tank (32).

5. The recyclable and washable acid mist purification tower according to claim 1, characterized in that: The packing assembly (4) includes a box cover (41) and a packing grid (42), with the inner side of the box cover (41) fixedly connected to the outer end of the packing grid (42).

6. The recyclable and washable acid mist purification tower according to claim 1, characterized in that: The sidewall of the demister (10) extends through the outer sidewall of the spray head (53), and the top side of the demister (10) is located on the bottom side of the cover (51).

7. The recyclable and washable acid mist purification tower according to claim 1, characterized in that: Some of the spray heads (53) are evenly arranged on the bottom side of the grid demister (10), and the pipes branching inside the branch pipe (52) pass through the interior of the grid demister (10) and connect to the top of the spray head (53).

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