Hot galvanizing waste gas treatment device

Abstract

The utility model discloses a hot galvanizing waste gas treatment device which comprises a spray tower used for absorbing hot galvanizing waste gas, a waste gas guide pipe used for guiding in the hot galvanizing waste gas is arranged on the lower portion of the spray tower, an air supply assembly is arranged on the lower portion of the spray tower, and a filtering assembly is arranged on the upper portion of the output end of the air supply assembly. And the filtering assembly is located under the waste gas guide pipe. The air supply assembly and the waste gas guide pipe are arranged at the lower part of the spray tower, so that waste gas can be effectively blown at the lower part of the spray tower, and compared with a traditional spray tower treatment method, the gas-liquid contact area can be increased, so that the mass transfer efficiency is improved. A spraying assembly in the device comprises a spraying pipe and an atomizer, the spraying pipe is located at the top end of a spraying tower, the atomizer is located below the spraying pipe, absorption liquid is atomized into small liquid drops through the atomizer, the small liquid drops are evenly distributed in the spraying tower, the problem that the liquid drops are not evenly distributed is avoided, and the absorption effect is improved.

Description

Technical Field

[0001] The utility model relates to a hot-dip galvanizing waste gas treatment device. Background Technique

[0002] Hot-dip galvanizing is a common metal surface treatment method, but a large amount of waste gas, including acidic and alkaline gases, will be generated during this process. The harmful substances in these waste gases pose potential risks to the environment and human health, so effective treatment is required.

[0003] Traditional hot-dip galvanizing waste gas treatment methods mainly use spray towers to absorb acidic or alkaline gases in the waste gas. However, the existing technology has low mass transfer efficiency and uneven droplet distribution when using a spray tower to treat hot-dip galvanizing waste gas, which will affect the absorption effect. Therefore, a hot-dip galvanizing waste gas treatment device is proposed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a hot-dip galvanizing waste gas treatment device to solve the problems of low mass transfer efficiency and uneven droplet distribution in the existing technology when using a spray tower to treat hot-dip galvanizing waste gas, which will affect the absorption effect.

[0005] To solve the above technical problems, the utility model provides the following technical solution: a hot-dip galvanizing waste gas treatment device, including a spray tower for absorbing hot-dip galvanizing waste gas, an exhaust gas conduit for introducing hot-dip galvanizing waste gas is arranged at the lower part of the spray tower, a air supply component is arranged at the lower part of the spray tower, a filtering component is arranged above the output end of the air supply component, and the filtering component is located directly below the exhaust gas conduit.

[0006] Preferably, the air supply component includes a blower, the output end of the blower is connected to the input end of an air supply pipe, and the output end of the air supply pipe is connected to the air inlet of the spray tower, so that the blower supplies air to the lower part of the spray tower through the air supply pipe.

[0007] Preferably, the filtering component includes two groups of annular clamping plates at the lower part of the spray tower, a bearing frame is arranged in the middle of the two groups of annular clamping plates, and a filter net is arranged between the two groups of bearing frames.

[0008] Preferably, a liquid inlet pipe for conveying waste gas absorption liquid is arranged at the upper part of the spray tower, and a spraying component is arranged at the output end of the liquid inlet pipe.

[0009] Preferably, the spraying component includes a spray pipe arranged at the top of the spray tower, and multiple groups of atomizers are arranged directly below the spray pipe.

[0010] Preferably, a receiving bottom shell for accommodating the waste gas absorption liquid is provided at the lower part of the spray tower, and a liquid guiding pipe is provided at the bottom of the receiving bottom shell, so that the receiving bottom shell can export the waste gas absorption liquid through the liquid guiding pipe.

[0011] Preferably, the receiving bottom shell is located directly below the filter screen, so that the waste gas absorption liquid on the filter screen can be collected at the receiving bottom shell by gravity.

[0012] Preferably, the output end of the waste gas conduit is provided in a flared shape.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] By providing a air supply component and a waste gas conduit at the lower part of the spray tower, the present utility model can effectively blow the waste gas at the lower part of the spray tower. Compared with the traditional spray tower treatment method, it can increase the gas-liquid contact area, thereby improving the mass transfer efficiency.

[0015] The spray component in the device includes a spray pipe and an atomizer. The spray pipe is located at the top of the spray tower, and the atomizer is located below the spray pipe. The atomizer atomizes the absorption liquid into fine droplets, making it evenly distributed in the spray tower, avoiding the problem of uneven droplet distribution, and improving the absorption effect.

[0016] The filtering component includes an annular clamping plate and a filter screen. The annular clamping plate is arranged at the lower part of the spray tower, and the filter screen is located between the annular clamping plates. Through the arrangement of the annular clamping plate and the filtering function of the filter screen, solid particles and suspended matters in the waste gas can be effectively captured and filtered, improving the filtering effect.

[0017] At the same time, the filter screen is located directly below the waste gas conduit, and the output end of the air supply component is located directly below the filter screen. During the air supply process, the filter screen can reduce the wind pressure of the air supply component, avoiding excessive wind pressure of the air supply component. Higher wind pressure will increase the air flow velocity, causing the waste gas to pass through the spray tower faster, reducing the residence time of the waste gas in the spray tower, limiting the contact time between the gas and the spray liquid, and thus reducing the absorption efficiency.

[0018] On the contrary, lower wind pressure will slow down the air flow velocity, increase the contact time between the gas and the spray liquid, contribute to improving the absorption efficiency, prevent excessive wind pressure, and then ensure the contact area between the gas and the spray liquid and the distribution of the spray liquid, thereby improving the absorption efficiency of the waste gas from the side.

[0019] A receiving bottom shell and a liquid guiding pipe are provided in the device. The receiving bottom shell is located directly below the filter screen. The waste gas absorption liquid on the filter screen is collected at the receiving bottom shell by gravity, and then the waste gas absorption liquid is exported through the liquid guiding pipe, which can facilitate the treatment and recycling of the waste gas absorption liquid. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0021] Figure 2 It is a schematic diagram of the structure of the spray assembly of an embodiment of the present utility model;

[0022] Figure 3 It is a schematic diagram of the structure of the exhaust gas duct of an embodiment of the present utility model;

[0023] Figure 4 It is a schematic diagram of the structure of the filtration assembly of an embodiment of the present utility model;

[0024] Figure 5 It is a schematic diagram of the structure of the carrier of an embodiment of the present utility model.

[0025] In the figure: 100, spray tower; 101, air inlet; 200, exhaust gas duct; 300, air supply assembly; 301, air blower; 302, air supply pipe; 400, filtration assembly; 401, annular clamping plate; 402, carrier; 403, filter net; 500, liquid inlet pipe; 600, spray assembly; 601, spray pipe; 602, atomizer; 700, accommodating bottom shell; 701, liquid guide pipe. Specific embodiments

[0026] In order to facilitate the solution of the problems of low mass transfer efficiency and uneven liquid droplet distribution when the prior art uses a spray tower to treat hot-dip galvanizing exhaust gas, which will affect the absorption effect, the embodiments of the present utility model provide a hot-dip galvanizing exhaust gas treatment device. The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figures 1-5 , the present utility model provides a hot-dip galvanizing exhaust gas treatment device, including a spray tower 100 for absorbing hot-dip galvanizing exhaust gas. An exhaust gas duct 200 for introducing hot-dip galvanizing exhaust gas is arranged at the lower part of the spray tower 100. An air supply assembly 300 is arranged at the lower part of the spray tower 100. A filtration assembly 400 is arranged above the output end of the air supply assembly 300, and the filtration assembly 400 is located directly below the exhaust gas duct 200. The output end of the exhaust gas duct 200 is arranged in a horn shape.

[0028] The air supply assembly 300 includes a blower 301. The output end of the blower 301 is connected to the input end of an air supply duct 302, and the output end of the air supply duct 302 is connected to the air inlet 101 of the spray tower 100, so that the blower 301 supplies air to the lower part of the spray tower 100 through the air supply duct 302.

[0029] The filtering assembly 400 includes two sets of annular clamping plates 401 located at the lower part of the spray tower 100. A carrier 402 is arranged in the middle of the two sets of annular clamping plates 401, and a filter net 403 is arranged between the two sets of carriers 402.

[0030] An inlet pipe 500 for conveying the waste gas absorption liquid is arranged at the upper part of the spray tower 100, and a spray assembly 600 is arranged at the output end of the inlet pipe 500. The spray assembly 600 includes a spray pipe 601 arranged at the top of the spray tower 100, and multiple sets of atomizers 602 are arranged directly below the spray pipe 601.

[0031] A receiving bottom shell 700 for accommodating the waste gas absorption liquid is arranged at the lower part of the spray tower 100. A liquid guide pipe 701 is arranged at the bottom of the receiving bottom shell 700, so that the receiving bottom shell 700 discharges the waste gas absorption liquid through the liquid guide pipe 701. The receiving bottom shell 700 is located directly below the filter net 403, so that the waste gas absorption liquid on the filter net 403 is collected at the receiving bottom shell 700 by gravity.

[0032] The working principle of a hot-dip galvanizing waste gas treatment device provided by the present utility model is as follows: During use, the hot-dip galvanizing waste gas to be treated is sent to the spray tower 100 through a waste gas duct 200. The waste gas absorption liquid is pumped into the spray pipe 601 by an external pump body and atomized and sprayed through the atomizer 602. At the same time, the air supply assembly 300 is started, so that the blower 301 supplies air to the spray tower 100 through the air supply duct 302, and the filter net 403 filters the dust in the gas pumped by the blower 301;

[0033] The blower 301 blows the waste gas at the outlet of the waste gas duct 200 to the atomizer 602 through wind pressure. While increasing the waste gas flow rate, the waste gas is brought into full contact with the waste gas absorption liquid, and then the waste gas is absorbed;

[0034] After the waste gas absorption liquid absorbs the substances in the waste gas and undergoes an absorption reaction, when the gravity is greater than the wind pressure generated by the air supply assembly 300, the waste gas absorption liquid drops to the filter net 403, is collected in the receiving bottom shell 700, and is discharged to the outside through the liquid guide pipe 701.

[0035] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A hot dip galvanizing waste gas treatment device, characterized in that: The invention comprises a spray tower (100) for absorbing hot-dip galvanizing waste gas, wherein a waste gas conduit (200) for introducing hot-dip galvanizing waste gas is arranged at the lower part of the spray tower (100), an air supply assembly (300) is arranged at the lower part of the spray tower (100), a filter assembly (400) is arranged at the upper part of the output end of the air supply assembly (300), and the filter assembly (400) is located directly below the waste gas conduit (200).

2. A hot dip galvanizing waste gas treatment device according to claim 1, characterized in that: The air supply assembly (300) comprises an air supply fan (301), the output end of the air supply fan (301) being connected to the input end of an air supply pipe (302), and the output end of the air supply pipe (302) being connected to the air inlet (101) of the spray tower (100), so that the air supply fan (301) supplies air to the lower part of the spray tower (100) through the air supply pipe (302).

3. A hot dip galvanizing waste gas treatment device according to claim 1, characterized in that: The filter assembly (400) comprises two groups of annular clamping plates (401) located at the lower part of the spray tower (100), a support frame (402) is provided in the middle of the two groups of annular clamping plates (401), and a filter screen (403) is provided between the two groups of support frames (402).

4. A hot dip galvanizing waste gas treatment device according to claim 1, characterized in that: A liquid inlet pipe (500) for conveying waste gas absorption liquid is arranged at the upper part of the spray tower (100), and a spray assembly (600) is arranged at the output end of the liquid inlet pipe (500).

5. A hot dip galvanizing waste gas treatment device according to claim 4, characterized in that: The spray assembly (600) comprises a spray pipe (601) arranged at the top of a spray tower (100), and a plurality of groups of atomizers (602) are arranged directly below the spray pipe (601).

6. A hot dip galvanizing waste gas treatment device according to claim 1, characterized in that: A receiving bottom shell (700) for receiving waste gas absorption liquid is arranged at the lower part of the spray tower (100), and a liquid guide pipe (701) is arranged at the bottom of the receiving bottom shell (700) so that the receiving bottom shell (700) can guide the waste gas absorption liquid out through the liquid guide pipe (701).

7. A hot dip galvanizing waste gas treatment device according to claim 6, characterized in that: The containing bottom shell (700) is located directly below the filter screen (403), so that the exhaust gas absorption liquid on the filter screen (403) is collected to the containing bottom shell (700) by gravity.

8. The hot dip galvanizing waste gas treatment device according to claim 1, characterized in that: The output end of the exhaust gas conduit (200) is arranged in a trumpet shape.

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