Acid mist air draft backwater recycling device

Abstract

The utility model discloses an acid mist air draft backwater recycling device which comprises a treatment box, a partition plate is fixed in the treatment box and divides an inner cavity of the treatment box into an adsorption chamber and a neutralization chamber from left to right, and an air inlet pipe located at the bottom of an inner cavity of the adsorption chamber is installed on the side face of the treatment box. A plurality of air inlet nozzles communicated with the inner cavity of the air inlet pipe are mounted on the air inlet pipe, and a spraying pipe is mounted at the top of the inner cavity of the adsorption chamber. According to the acid mist air draft return water recycling device, acid mist is treated in a liquid adsorption mode, copper in the acid mist can be precipitated and collected in the treatment process, resource waste caused by copper loss is avoided, meanwhile, the acid mist is sprayed in a water circulation mode, the water consumption is reduced, in addition, alkali liquor is additionally arranged for further neutralizing the acid mist, and the acid mist is recycled. The acid mist treatment effect is improved, harmful gases such as nitric oxide insoluble in water in the acid mist can be removed in an activated carbon adsorption and filtration mode, and harm to the environment and the human body is reduced.

Description

A device for extracting and reusing acid mist and returning water Technical Field

[0001] This utility model relates to the technical field of acid mist treatment devices, specifically an acid mist extraction and water recycling device. Background Technology

[0002] During the processing of raw foil, the use of solutions such as sulfuric acid and copper sulfate can generate acid mist. This acid mist is highly corrosive, posing a significant environmental hazard. Inhalation of acid mist can irritate the respiratory tract and harm human health. Acid mist is readily soluble in water; therefore, liquid absorption is commonly used to eliminate it from flue gas. However, this method consumes a large amount of water, and direct discharge of wastewater to a recycling station leads to water waste and increases the pressure on the recycling station's wastewater treatment capacity. Furthermore, the acid mist contains copper, and its discharge to the recycling station results in copper loss, leading to substantial resource waste. Summary of the Invention

[0003] The technical problem this invention aims to solve is to overcome existing defects and provide an acid mist extraction and water recycling device. This device uses liquid adsorption to treat acid mist, and during the treatment process, copper in the acid mist can be precipitated and collected to avoid copper loss and resource waste. Simultaneously, a water circulation method is used to spray the acid mist, reducing water consumption. Furthermore, an alkaline solution is added to further neutralize the acid mist, improving the treatment effect. Activated carbon adsorption filtration can also remove water-insoluble harmful gases such as nitric oxide from the acid mist, reducing harm to the environment and human health. This effectively solves the problems in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an acid mist extraction and water recycling device, comprising a treatment box, wherein a partition plate is fixed inside the treatment box, and the partition plate divides the inner cavity of the treatment box into an adsorption chamber and a neutralization chamber from left to right; an air inlet pipe is installed on the side of the treatment box at the bottom of the inner cavity of the adsorption chamber, and several air inlet nozzles communicating with the inner cavity are installed on the air inlet pipe; a spray pipe is installed at the top of the inner cavity of the adsorption chamber, and several spray nozzles communicating with the inner cavity are installed on the side of the spray pipe; a water supply assembly communicating with the inner cavity of the spray pipe is installed on the outside of the treatment box; an air supply pipe is installed in the neutralization chamber, the air inlet end of the air supply pipe communicating with the top of the inner cavity of the adsorption chamber; several second nozzles communicating with the inner cavity are installed on the lower side of the air supply pipe, and the second nozzles are located at the bottom of the inner cavity of the neutralization chamber; clean water is stored in the lower part of the adsorption chamber; and alkaline solution is stored in the lower part of the neutralization chamber.

[0005] As a preferred embodiment of this utility model, a baffle plate is installed in the adsorption chamber, and the baffle plate divides the adsorption chamber into an immersion chamber and a spray chamber from bottom to top. The clean water is stored in the immersion chamber, and a space is reserved between the clean water surface and the baffle plate. A connecting pipe for connecting the immersion chamber and the spray chamber is installed on the baffle plate, and a one-way valve is installed on the connecting pipe.

[0006] As a preferred embodiment of this utility model, the end of the connecting pipe is fixed with an air jet pipe located at the bottom of the spray chamber, and a number of first nozzles communicating with the inner cavity are installed on the side of the air jet pipe.

[0007] As a preferred embodiment of this utility model, the water supply assembly includes a water pump installed outside the treatment tank, an inlet pipe connected to the inner cavity of the spray pipe at the outlet end of the water pump, a pumping pipe connected to the bottom of the inner cavity of the spray chamber at the inlet end of the water pump, and clean water stored in the lower part of the inner cavity of the spray chamber.

[0008] As a preferred embodiment of this utility model, a filter box is installed on the top of the treatment box, located in the upper part of the neutralization chamber, and the neutralization chamber is connected to the outside through the filter box. The filter box is provided with replaceable activated carbon, and a positioning plate for supporting and limiting the filter box is fixed on the upper side of the neutralization chamber.

[0009] As a preferred embodiment of this utility model, a plurality of condensing plates are installed in the neutralization chamber, and the plurality of condensing plates are distributed on both sides of the neutralization chamber cavity, and the condensing plates on both sides of the neutralization chamber are staggered, and the condensing plates are inclined downward.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. The acid mist extraction and water recycling device of this utility model connects the air inlet pipe to the external exhaust assembly, controls the exhaust assembly to extract the flue gas generated when the green foil is produced, and the extracted flue gas enters the air inlet pipe and is sprayed out into the adsorption chamber through the air inlet nozzle.

[0012] 2. The acid mist extraction and water recycling device of this utility model controls the water supply component to deliver spray liquid into the spray pipe. The spray liquid entering the spray pipe is sprayed out in the form of water mist through the spray head. The sprayed water mist further dissolves the acid mist in the flue gas. The water flow after spraying is collected in the lower part of the spray chamber and is re-extracted by the water supply component to achieve water circulation, thereby reducing water consumption and wastewater discharge.

[0013] 3. In the acid mist extraction and water recycling device of this utility model, as flue gas is continuously discharged into the adsorption chamber through the air inlet pipe, the air pressure in the adsorption chamber increases. Some of the flue gas enters the gas delivery pipe and is transported to the neutralization chamber through the gas delivery pipe. The alkaline solution filling the neutralization chamber reacts with the residual acid mist in the flue gas to improve the quality of acid mist treatment in the flue gas. First, water washing is used to dissolve some of the acid mist, and then the remaining acid mist is neutralized by alkaline solution. This method can reduce the rate of decrease in alkaline solution concentration and increase the service life of alkaline solution.

[0014] 4. In the acid mist extraction and water recycling device of this utility model, the acid mist in the flue gas is neutralized by alkaline solution, and the flue gas enters the filter box, is filtered by the filter box, and is discharged from the treatment box. The activated carbon set in the filter box is used for adsorption and filtration of harmful gases such as nitrogen monoxide in the flue gas, protecting the environment and human health. Attached Figure Description

[0015] Figure 1 is a schematic diagram of the structure of this utility model;

[0016] Figure 2 is a cross-sectional view of the present invention;

[0017] Figure 3 is a schematic diagram of the front view structure of Figure 2;

[0018] Figure 4 is an enlarged structural diagram of point A in Figure 3.

[0019] In the diagram: 1. Processing box, 2. Divider plate, 3. Air inlet pipe, 4. Air inlet nozzle, 5. Spray pipe, 6. Spray head, 7. Water pump, 8. Water inlet pipe, 9. Water extraction pipe, 10. Barrier plate, 11. Connecting pipe, 12. One-way valve, 13. Jet pipe, 14. First nozzle, 15. Air supply pipe, 16. Second nozzle, 17. Condensation plate, 18. Filter box, 19. Positioning plate. Detailed Implementation

[0020] 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.

[0021] Please refer to Figures 1-4. This utility model provides a technical solution: an acid mist extraction and water recycling device, including a treatment box 1. A partition plate 2 is fixed inside the treatment box 1, dividing the inner cavity of the treatment box 1 into an adsorption chamber and a neutralization chamber from left to right. This partitioned treatment method improves the efficiency and quality of acid mist treatment. An air inlet pipe 3 is installed on the side of the treatment box 1 at the bottom of the inner cavity of the adsorption chamber, and several air inlet nozzles 4 connected to the inner cavity of the air inlet pipe 3 are installed on the air inlet pipe 3. The air inlet pipe 3 is connected to an external exhaust assembly, which controls the exhaust assembly to extract the flue gas generated by the green foil. The extracted flue gas enters the air inlet pipe 3 and is sprayed out into the adsorption chamber through the air inlet nozzles 4. Preferably, clean water is stored in the lower part of the inner cavity of the adsorption chamber. After the flue gas is sprayed out through the air inlet nozzles 4 on the air inlet pipe 3, it comes into contact with the clean water. The clean water dissolves part of the acid mist in the flue gas. At the same time, under the action of the clean water, the copper contained in the acid mist flue gas precipitates and accumulates in the adsorption chamber, which facilitates the recovery of copper contained in the flue gas and reduces resource waste.

[0022] A spray pipe 5 is installed at the top of the adsorption chamber, and several spray heads 6 connected to the inner cavity are installed on the side of the spray pipe 5. A water supply assembly connected to the inner cavity of the spray pipe 5 is installed on the outside of the treatment box 1. The water supply assembly is controlled to deliver spray liquid into the spray pipe 5. The spray liquid entering the spray pipe 5 is sprayed out in the form of water mist through the spray heads 6, and the sprayed water mist further dissolves the acid mist in the flue gas.

[0023] A gas supply pipe 15 is installed inside the neutralization chamber. The inlet end of the gas supply pipe 15 is connected to the top of the adsorption chamber. Several second nozzles 16, connected to the inner cavity of the gas supply pipe 15, are installed on the lower side of the gas supply pipe 15 and are located at the bottom of the neutralization chamber. As flue gas is continuously discharged into the adsorption chamber through the inlet pipe 3, the air pressure inside the adsorption chamber increases. Some of the flue gas enters the gas supply pipe 15 and is transported to the neutralization chamber through the gas supply pipe 15. The lower part of the neutralization chamber stores an alkaline solution, which is a sodium hydroxide solution. The alkaline solution filling the neutralization chamber reacts with the residual acid mist in the flue gas to improve the quality of acid mist treatment in the flue gas. In this device, some acid mist is first dissolved by water washing, and then the remaining acid mist is neutralized by alkaline solution. This method can reduce the rate of decrease in alkaline solution concentration and increase the service life of alkaline solution.

[0024] A baffle plate 10 is installed in the adsorption chamber, dividing the adsorption chamber into a water immersion chamber and a spray chamber from bottom to top. Clean water is stored in the water immersion chamber, where copper in the flue gas precipitates and accumulates, facilitating the collection and filtration of copper in the flue gas. A space is reserved between the clean water surface and the baffle plate 10. A connecting pipe 11 is installed on the baffle plate 10 to connect the water immersion chamber and the spray chamber. The flue gas moves in the clean water in the form of bubbles, and the clean water washes the flue gas, dissolving some of the acid mist and facilitating copper precipitation. After the flue gas moves to the space above the liquid surface, it enters the connecting pipe 11 and then enters the spray chamber through the connecting pipe 11. A one-way valve 12 is installed on the connecting pipe 11 to prevent gas or liquid in the spray chamber from entering the water immersion chamber through the connecting pipe 11. Preferably, a one-way valve is also installed on the air inlet pipe 3 to prevent clean water in the water immersion chamber from flowing into the air inlet pipe 3.

[0025] The end of the connecting pipe 11 is fixed with a jet pipe 13 located at the bottom of the spray chamber, and several first nozzles 14 communicating with its inner cavity are installed on the side of the jet pipe 13. The flue gas entering the connecting pipe 11 flows into the jet pipe 13 and is then sprayed out through the first nozzles 14. The several first nozzles 14 are used to increase the flue gas emission area, so that the acid mist in the flue gas can come into contact with the water mist in the spray chamber.

[0026] The water supply assembly includes a water pump 7 installed outside the treatment tank 1. The water pump 7 has an inlet pipe 8 connected to the inner cavity of the spray pipe 5 at its outlet end. The water pump 7 also has a pumping pipe 9 connected to the bottom of the spray chamber at its inlet end. The lower part of the spray chamber stores clean water. The water pump 7 is controlled to operate, and the water pump 7 draws water from the bottom of the spray chamber through the pumping pipe 9 and delivers the drawn water to the spray pipe 5 through the inlet pipe 8. The water after spraying is collected in the lower part of the spray chamber and is re-drawn for spraying through the water supply assembly, thus realizing water circulation and reducing water consumption and wastewater discharge.

[0027] A filter box 18 is installed on the top of the treatment box 1, located in the upper part of the neutralization chamber. The neutralization chamber is connected to the outside through the filter box 18. The filter box 18 is equipped with replaceable activated carbon. A positioning plate 19 is fixed on the upper side of the neutralization chamber to support and limit the filter box 18. After the acid mist in the flue gas is neutralized by the alkali solution, the flue gas enters the filter box 18, is filtered by the filter box 18, and is discharged from the treatment box 1. The activated carbon in the filter box 18 is used for adsorption and filtration of harmful gases such as nitrogen monoxide in the flue gas, protecting the environment and human health.

[0028] Several condensing plates 17 are installed in the neutralization chamber, distributed on both sides of the chamber. The condensing plates 17 on both sides of the neutralization chamber are staggered and tilted downwards. After the flue gas is discharged from the alkaline solution, it is guided and blocked by the condensing plates 17, which increases its movement path in the neutralization chamber. This facilitates the condensation of water molecules carried in the flue gas on the condensing plates 17, reducing the moisture content in the flue gas and preventing the activated carbon in the filter box 18 from adsorbing a large amount of water molecules and becoming unusable for the adsorption and filtration of harmful gases.

[0029] The water pump 7 used in this utility model is a commonly used electronic component in the prior art. Its working method and circuit structure are well-known technologies. The operation of the water pump 7 is controlled by setting a switch or a PLC controller. This method is a common technical means used by technicians and will not be described in detail here.

[0030] This acid mist extraction and water recycling device uses liquid adsorption to treat acid mist. During the treatment process, copper in the acid mist can be precipitated and collected to avoid copper loss and resource waste. At the same time, water circulation is used to spray the acid mist to reduce water consumption. In addition, an alkaline solution is added to further neutralize the acid mist and improve the acid mist treatment effect. Activated carbon adsorption filtration can also remove harmful gases such as nitrogen monoxide that are insoluble in water from the acid mist, reducing harm to the environment and human health.

[0031] The parts not disclosed in this utility model are all prior art, and their specific structures, materials, and working principles will not be described in detail. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An acid mist extraction and recirculation water reuse device, comprising a treatment tank (1), characterized in that: The processing box (1) is fixed with a partition plate (2), which divides the inner cavity of the processing box (1) into an adsorption chamber and a neutralization chamber from left to right. An air inlet pipe (3) is installed on the side of the processing box (1) at the bottom of the adsorption chamber, and several air inlet nozzles (4) connected to the inner cavity are installed on the air inlet pipe (3). A spray pipe (5) is installed on the top of the adsorption chamber, and several spray nozzles (6) connected to the inner cavity are installed on the side of the spray pipe (5). A water supply assembly connected to the inner cavity of the spray pipe (5) is installed on the outside of the processing box (1). A gas supply pipe (15) is installed in the neutralization chamber. The air inlet end of the gas supply pipe (15) is connected to the top of the adsorption chamber. Several second nozzles (16) connected to the inner cavity are installed on the lower side of the gas supply pipe (15), and the second nozzles (16) are located at the bottom of the neutralization chamber. The lower part of the adsorption chamber stores clean water, and the lower part of the neutralization chamber stores alkaline solution.

2. The acid mist extraction and water recycling device according to claim 1, characterized in that: The adsorption chamber is equipped with a baffle plate (10), which divides the adsorption chamber into an immersion chamber and a spray chamber from bottom to top. The clean water is stored in the immersion chamber, and a space is reserved between the clean water surface and the baffle plate (10). The baffle plate (10) is equipped with a connecting pipe (11) for connecting the immersion chamber and the spray chamber, and a one-way valve (12) is installed on the connecting pipe (11).

3. The acid mist extraction and water recycling device according to claim 2, characterized in that: The end of the connecting pipe (11) is fixed with a jet pipe (13) located at the bottom of the spray chamber, and a number of first nozzles (14) communicating with its inner cavity are installed on the side of the jet pipe (13).

4. The acid mist extraction and water recycling device according to claim 2, characterized in that: The water supply assembly includes a water pump (7) installed outside the treatment tank (1). The water pump (7) has an inlet pipe (8) that communicates with the inner cavity of the spray pipe (5) at its outlet end. The water pump (7) has a pumping pipe (9) that communicates with the bottom of the spray chamber at its inlet end. The lower part of the spray chamber stores clean water.

5. The acid mist extraction and water recycling device according to claim 1, characterized in that: The processing box (1) is equipped with a filter box (18) located in the upper part of the neutralization chamber, and the neutralization chamber is connected to the outside through the filter box (18). The filter box (18) is equipped with replaceable activated carbon, and a positioning plate (19) is fixed on the upper side of the neutralization chamber to support and limit the filter box (18).

6. The acid mist extraction and water recycling device according to claim 1, characterized in that: The neutralization chamber is equipped with several condensing plates (17), which are distributed on both sides of the neutralization chamber cavity and are staggered on both sides. The condensing plates (17) are inclined downwards.

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