Experimental acid mist waste gas treatment device

Abstract

The utility model is applicable to the technical field of acid mist treatment, and provides an experimental acid mist waste gas treatment device which comprises an outer shell, a liquid inlet cover and a liquid outlet cover are fixedly connected to the top and the bottom of the outer shell respectively, and a liquid inlet and a gas outlet are formed in the liquid inlet cover; a connecting tank is arranged at the bottom of the liquid outlet cover through a liquid outlet; an air inlet pipeline and a liquid outlet pipeline are arranged on the connecting tank; a water inlet and a water outlet are formed in the outer shell; a sieve plate and a film distributor are arranged in the liquid inlet cover, a plurality of vertical tubes are arranged in the outer shell, tube flow channels are arranged in the vertical tubes, a plurality of film distributor flow channels are arranged on the film distributor, the vertical tubes are arranged at the bottom of the film distributor, and the tube flow channels correspond to the film distributor flow channels in a one-to-one mode. Therefore, the device can consume acidic components in the gas through an acid-base neutralization reaction by adopting a falling film absorption mode through reverse countercurrent contact of the alkaline solution and the acidic gas.

Description

Technical Field

[0001] The utility model is applicable to the technical field of acid mist treatment, and provides an experimental acid mist waste gas treatment device. Background Technique

[0002] An acid mist waste gas treatment device is a device used to treat waste gas containing acidic substances generated in laboratories or industrial processes. These waste gases usually contain acidic compounds such as sulfuric acid, nitric acid, and hydrofluoric acid, which can pose potential hazards to the environment and human health. The main function of the acid mist waste gas treatment device is to convert or remove these acidic substances through absorption, neutralization, or other chemical reaction processes to reduce their impact on the surrounding environment.

[0003] In order to treat these acidic waste gases, common methods include using alkaline solutions (such as sodium hydroxide or sodium carbonate solutions) for neutralization reactions. The neutralization reaction will convert the acidic substances in the waste gas into relatively safer salts or water-soluble compounds, thereby reducing their harm to the environment and human body.

[0004] However, some of the current experimental acid mist waste gas treatment devices on the market have the problem of low acid gas absorption efficiency. This is mainly manifested in the insufficient contact between the absorbent and the waste gas, resulting in incomplete neutralization or absorption of some acidic substances. In addition, some devices are complex in design and inconvenient to operate, making it difficult to achieve stable and efficient waste gas treatment effects. Content of the Utility Model

[0005] Aiming at the above defects, the purpose of the utility model is to provide an experimental acid mist waste gas treatment device, aiming to solve the problems proposed in the background technique. The device includes an outer shell body, the top and bottom of the outer shell body are respectively fixedly connected with a liquid inlet cover and a liquid outlet cover, and a liquid inlet and an air outlet are installed on the liquid inlet cover; a connecting tank is installed at the bottom of the liquid outlet cover through a liquid outlet, and an air inlet pipe and a liquid outlet pipe are installed on the connecting tank; a water inlet and a water outlet are fixedly connected to the outer shell body; a sieve plate and a film distributor are installed in the liquid inlet cover, several vertical tubes are installed in the outer shell body, a tube flow channel is arranged in the vertical tube, and several film distributor flow channels are evenly arranged on the film distributor. The vertical tube is fixedly connected to the bottom of the film distributor, and the tube flow channel corresponds to the film distributor flow channel one by one.

[0006] Furthermore, both the liquid inlet cover and the liquid outlet cover are connected to the top and bottom of the outer shell body through sealing flanges.

[0007] Further, the sieve plate includes a first sieve plate and a second sieve plate, and first sieve plate holes and second sieve plate holes are uniformly provided on the first sieve plate and the second sieve plate respectively; the first sieve plate is arranged above the second sieve plate, and any one of the first sieve plate holes and any one of the second sieve plate holes are staggered in the height direction; any one of the second sieve plate holes and any one of the film distributor channels on the film distributor are staggered in the height direction.

[0008] Further, a plurality of conical buffers are uniformly provided on the film distributor, and the conical buffers correspond to the second sieve plate holes on the second sieve plate one by one.

[0009] Further, a buffer plate is fixedly connected inside the liquid inlet cover.

[0010] Further, a mixing plate is fixedly connected inside the liquid outlet cover, and a plurality of through holes are provided on the mixing plate.

[0011] Further, one end of the air outlet away from the liquid inlet cover is inclined upward.

[0012] In the present utility model, the alkaline solution and the acidic gas are in countercurrent contact in the opposite direction, so as to adopt the falling film absorption method to consume the acidic components in the gas through the acid-base neutralization reaction. Among them, the vertical tubes also play the role of the cooling and absorption section, the absorbent and the absorption gas flow inside the tubes, and the coolant flows between the tubes; a film distributor and a plurality of sieve plates and other distribution devices are provided in the upper part to ensure that the absorbent is evenly distributed into each absorption tube and forms a thin film on the inner wall of the tube and flows downwards. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the device;

[0014] Figure 2 is a sectional view of the device;

[0015] Figure 3 is a schematic structural diagram of the film distributor;

[0016] Figure 4 is Figure 2 an enlarged view of the structure of part A of

[0017] In the figure: 01 - mounting table; 1 - outer housing; 101 - water inlet; 102 - water outlet; 11 - mounting seat; 12 - sealing flange; 13 - vertical tubes; 2 - liquid inlet cover; 21 - liquid inlet; 22 - air outlet; 23 - buffer plate; 3 - liquid outlet cover; 31 - liquid outlet; 32 - mixing plate; 4 - connection tank; 41 - intake pipe; 42 - liquid outlet pipe; 5 - film distributor; 51 - film distributor channel; 52 - conical buffer; 61 - first sieve plate; 611 - first sieve plate hole; 62 - second sieve plate; 621 - second sieve plate hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with 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.

[0019] It should be noted that in the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more; the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model. In addition, terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0020] At the same time, in the description of the present utility model, unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0021] In order to make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0022] See Figures 1-4 , the purpose of the present utility model is to provide an experimental acid mist waste gas treatment device, including an outer shell 1. The top and bottom of the outer shell 1 are respectively fixedly connected with a liquid inlet hood 2 and a liquid outlet hood 3. A liquid inlet 21 and an air outlet 22 are fixedly connected to the liquid inlet hood 2; a liquid outlet 31 is fixedly connected to the liquid outlet hood 3. The liquid outlet hood 3 is fixedly connected to the top of a connection tank 4 through the liquid outlet 31. An air inlet pipe 41 and a liquid outlet pipe 42 are fixedly connected to the connection tank 4; specifically, the air inlet pipe 41 is located above the liquid outlet pipe 42. An inlet water port 101 and an outlet water port 102 are fixedly connected to the outer shell 1.

[0023] A sieve plate and a film distributor 5 are fixedly connected inside the liquid inlet hood 2. The sieve plate is arranged on top of the film distributor 5 and is at a certain distance from the film distributor 5. The communication port between the air outlet 22 and the inside of the liquid inlet hood 2 is arranged between the sieve plate and the film distributor 5.

[0024] Inside the outer casing 1, a number of vertical tubes 13 are fixedly connected. Inside the vertical tubes 13, there are tube flow channels. On the film distributor 5, a number of film distributor flow channels 51 are evenly arranged. The vertical tubes 13 are fixedly connected to the bottom of the film distributor 5, and the tube flow channels correspond to the film distributor flow channels 51 one by one.

[0025] During actual use, the intake pipe 41 on the connection tank 4 is connected to the external air supply equipment for the experimental acid mist. The external air supply equipment sends the gas with acid mist into the connection tank 4 through the intake pipe 41. Subsequently, the acid mist enters a number of vertical tubes 13 inside the outer casing 1 upward along the liquid outlet 31. Then, the acid mist enters the liquid inlet hood 2 through the film distributor flow channels 51 on the film distributor 5, and finally is discharged from the device through the air outlet 22. During this process, the alkaline solution enters the liquid inlet hood 2 through the liquid inlet 21. The alkaline solution falls on the film distributor 5 through the buffering of the sieve plate. Then, the alkaline solution descends along the inner wall of the vertical tube 13 in a thin film shape through the film distributor 5 to absorb and neutralize the acidic gas moving upward along the vertical tube 13. During the process, due to the heat released by the neutralization reaction, an external circulating cooling device is connected to the water inlet 101 and the water outlet 102 of the outer casing 1 to continuously circulate the coolant outside the vertical tube to achieve the purpose of cooling. After the acid-base neutralization, the alkaline liquid descends through the liquid outlet 31 into the connection tank 4. The liquid accumulates at the bottom of the connection tank 4 and then flows out from the liquid outlet pipe 42 for recovery treatment.

[0026] Preferably, both the liquid inlet hood 2 and the liquid outlet hood 3 are connected to the top and bottom of the outer casing 1 through sealing flanges 12. The sealing flanges 12 can reliably fix and connect the liquid inlet hood 2 and the liquid outlet hood 3 to the outer casing 1, ensuring that the acidic gas and the alkaline solution will not leak.

[0027] Preferably, the sieve plate includes a first sieve plate 61 and a second sieve plate 62. On the first sieve plate 61 and the second sieve plate 62, first sieve plate holes 611 and second sieve plate holes 621 are evenly arranged respectively. The first sieve plate 61 is arranged above the second sieve plate 62, and any first sieve plate hole 611 and any second sieve plate hole 621 are staggered in the height direction. At the same time, any second sieve plate hole 621 and any film distributor flow channel 51 on the film distributor 5 are staggered in the height direction.

[0028] Preferably, a buffer plate 23 is fixedly connected inside the liquid inlet hood 2 near the liquid inlet 21. When the alkaline liquid enters the liquid inlet hood 2 through the liquid inlet 21 and first falls on the buffer plate 23, it can make the alkaline liquid distribute more evenly on the sieve plate when flowing down.

[0029] Preferably, a number of conical buffers 52 are evenly arranged on the film applicator 5. The conical buffers 52 correspond one by one to the second sieve plate holes 621 on the second sieve plate 62. When the alkaline liquid falls along the second sieve plate holes 621, it can fall on the top or the inclined surface of the conical buffer 52, thereby slowing down the flow rate of the alkaline liquid and enabling it to form a film and flow down better when flowing into the film applicator channel 51.

[0030] Preferably, a mixing plate 32 is fixedly connected inside the liquid outlet hood 3, and a number of through holes are provided on the mixing plate 32; on the mixing plate 32, under the influence of gravity, the alkaline liquid moves downward, and under the pressure of an external air pump, the acidic gas moves upward. After the alkaline liquid falls on the mixing plate 32, it will splash or form a mixed flow, and is preliminarily mixed with the acidic gas, which can further promote the absorption of the acidic gas.

[0031] Preferably, the end of the air outlet 22 away from the liquid inlet hood 2 is inclined upward. Specifically, the acute angle between the straight line formed by the length direction of the air outlet 22 and the height direction of the outer housing 1 is 65°. The upwardly inclined air outlet 22 can prevent the alkaline liquid from entering the air outlet 22.

[0032] Preferably, two symmetrically arranged mounting seats 11 are provided on the side surface of the outer housing 1, and the mounting seats 11 can facilitate the installation of the device. Thus, the device can be installed on the mounting table 01 through the mounting seats 11.

[0033] In summary, the device can achieve countercurrent contact in the reverse direction between the alkaline solution and the acidic gas, and thus adopt the falling film absorption method to consume the acidic components in the gas through the acid-base neutralization reaction. Among them, the vertical tubes 13 also play the role of the cooling absorption section. The absorbent and the absorption gas flow inside the tubes, and the coolant flows between the tubes; a film applicator 5 and a plurality of sieve plates and other distribution devices are provided in the upper part to ensure that the absorbent is evenly distributed into each absorption tube and forms a thin film on the inner wall of the tube and flows down.

[0034] Certainly, the present utility model can also have many other embodiments. Without departing from the spirit and essence of the present utility model, those skilled in the art can make various corresponding changes and deformations according to the present utility model, but these corresponding changes and deformations should all fall within the protection scope of the appended claims of the present utility model.

Claims

1. An experimental acid mist waste gas treatment device, characterized in that, It includes a housing body (1), a liquid inlet cover (2) and a liquid outlet cover (3) are fixedly connected to the top and bottom of the housing body (1) respectively. A liquid inlet (21) and a gas outlet (22) are installed on the liquid inlet cover (2); a connecting tank (4) is installed at the bottom of the liquid outlet cover (3) through a liquid outlet (31), and an air inlet pipe (41) and a liquid outlet pipe (42) are installed on the connecting tank (4); a water inlet (101) and a water outlet (102) are fixedly connected to the housing body (1); a sieve plate and a film distributor (5) are installed in the liquid inlet cover (2), several vertical tubes (13) are installed in the housing body (1), a tube flow channel is provided in the vertical tube (13), and several film distributor flow channels (51) are evenly provided on the film distributor (5). The vertical tube (13) is fixedly connected to the bottom of the film distributor (5), and the tube flow channel corresponds to the film distributor flow channel (51) one by one.

2. The experimental acid mist waste gas treatment device according to claim 1, characterized in that, Both the liquid inlet cover (2) and the liquid outlet cover (3) are connected to the top and bottom of the housing body (1) through sealing flanges (12).

3. The experimental acid mist waste gas treatment device according to claim 1, characterized in that, The sieve plate includes a first sieve plate (61) and a second sieve plate (62), and first sieve plate holes (611) and second sieve plate holes (621) are evenly provided on the first sieve plate (61) and the second sieve plate (62) respectively; the first sieve plate (61) is arranged above the second sieve plate (62), and any one of the first sieve plate holes (611) and any one of the second sieve plate holes (621) are staggered in the height direction; any one of the second sieve plate holes (621) and any one of the film distributor flow channels (51) on the film distributor (5) are staggered in the height direction.

4. The experimental acid mist waste gas treatment device according to claim 3, characterized in that, Several conical buffers (52) are evenly provided on the film distributor (5), and the conical buffers (52) correspond to the second sieve plate holes (621) on the second sieve plate holes (621) one by one.

5. The experimental acid mist exhaust gas treatment device according to claim 1, characterized in that, A buffer plate (23) is fixedly connected inside the liquid inlet cover (2).

6. The experimental acid mist waste gas treatment device according to claim 1, characterized in that A mixing plate (32) is fixedly connected inside the liquid outlet cover (3), and several through holes are provided on the mixing plate (32).

7. The experimental acid mist waste gas treatment device according to claim 1, wherein One end of the gas outlet (22) away from the liquid inlet cover (2) is inclined upward.

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