Chemical tail gas spraying treatment device

Abstract

The utility model discloses a chemical tail gas spraying treatment device, which relates to the technical field of chemical tail gas treatment and comprises a liquid tank for accommodating liquid, a plurality of branch tower bodies and a circulating pump, the adjacent branch tower bodies are connected end to end through gas guide pipes, and the chemical tail gas sequentially penetrates through the branch tower bodies; the liquid tank is located below the branch tower bodies, the lower ends of the branch tower bodies are connected with the liquid tank through liquid discharging pipes, and spraying frames for spraying liquid to the lower parts of the branch tower bodies are arranged at the upper parts of the branch tower bodies; the circulating pump is used for guiding liquid in the liquid tank into each spraying frame through the water guide pipe; according to the utility model, the chemical tail gas is dredged through the plurality of branch tower bodies connected end to end, and the spraying liquid of each branch tower body independently circulates without interference and can be directly guided back to the liquid box and circulates, so that the proportion of the liquid to the gas in each branch tower body is balanced, the full contact of the gas and the liquid is facilitated, and the treatment effect of the chemical tail gas can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical tail gas treatment, in particular to a chemical tail gas spray treatment device. Background Art

[0002] The spray treatment device is a common equipment for chemical tail gas treatment. The traditional spray treatment device is a tower structure, i.e., a spray tower. The existing spray tower is an integral structure, and has a multi-layer spray rack with nozzles inside. The liquid falls from top to bottom, and the nozzle sprays the liquid into mist or raindrops. The chemical tail gas passes from bottom to top and is in close contact with the mist or raindrop-shaped liquid for mass transfer, so that the harmful soluble components in the chemical tail gas are absorbed. For example, a spray tower with a utility model patent with a publication number of CN214051105U and a spray tower device with a utility model patent with a publication number of CN218687722U both have a multi-layer spray structure, and the multi-layer spray structure fully absorbs the soluble components in the chemical tail gas, but the liquid that has absorbed the soluble components in the upper layer has to pass through the lower spray structure and the packing layer, so that the spray liquid content in the lower part of the tower body increases, that is, the liquid-gas ratio in the lower part is significantly greater than the liquid-gas ratio in the upper part, and the liquid-gas ratio in the tower body is seriously unbalanced, which is not conducive to the full contact between the liquid and gas in the lower part of the tower body. Utility Model Content

[0003] The purpose of the utility model is to provide a chemical tail gas spray treatment device in order to solve the above-mentioned problems in the prior art.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A chemical tail gas spray treatment device comprises a liquid tank for containing liquid, a plurality of sub-tower bodies and a circulation pump; adjacent sub-tower bodies are connected end to end through air guide pipes, and chemical tail gas passes through each sub-tower body in sequence; the liquid tank is located below the sub-tower body, and the lower ends of the sub-tower bodies are connected to the liquid tank through drainage pipes, and the upper parts of the sub-tower bodies are provided with spray racks for spraying liquid toward the lower parts of the sub-tower bodies; the circulation pump guides the liquid in the liquid tank into each spray rack through a water guide pipe.

[0006] Furthermore, the chemical tail gas flows from bottom to top in the sub-tower body; the lower part of the head sub-tower body is connected to an air inlet pipe for conveying chemical tail gas; and the upper end of the tail sub-tower body is connected to an exhaust pipe.

[0007] Furthermore, a swirl plate and a packing layer are provided inside the sub-tower body; the swirl plate is located at the lower part of the sub-tower body; and the packing layer is located in the middle part of the sub-tower body.

[0008] Furthermore, the water pipe includes a main water pipe and a plurality of branch water pipes, and the circulation pump pumps the liquid into the main water pipe; the main water pipe and each spray rack are connected through the branch water pipes.

[0009] Furthermore, the sub-tower bodies increase in height from the head end to the tail end.

[0010] Furthermore, a liquid infusion tube is provided on the upper side of the liquid tank, and a cover body is provided at the upper end of the liquid infusion tube.

[0011] Furthermore, a demister is provided in the tail end sub-tower body, and the demister is located on the upper side of the spray frame in the sub-tower body.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model guides chemical tail gas through a plurality of sub-tower bodies connected end to end, and the spray liquid of each sub-tower body flows independently without interference, and can be directly guided back to the liquid tank and circulated, so that the ratio of liquid and gas in each sub-tower body is balanced, which is conducive to full contact between gas and liquid and can improve the chemical tail gas treatment effect; the utility model makes the gas-liquid contact more fully through the swirl plate and the packing layer; and removes water mist in the exhaust gas through the demister. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the internal structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the internal structure of the first end tower body of the utility model.

[0016] Figure 3 It is a schematic diagram of the internal structure of the tail end tower body of the utility model.

[0017] Figure 4 It is a schematic diagram of the external structure of the utility model.

[0018] In the figure: 1. tower body; 2. air guide pipe; 3. air inlet pipe; 4. exhaust pipe; 5. swirl plate; 6. packing layer; 7. spray rack; 8. liquid tank; 9. circulation pump; 10. water guide pipe; 11. drain pipe; 12. liquid replenishment pipe; 13. cover body; 14. demister. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" that may appear 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 a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the term "provided with" that may appear should be understood in a broad sense. For example, the object "provided with" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or an inseparable connection. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0022] The present invention is further described in detail below in conjunction with the embodiments.

[0023] The specific embodiment of the chemical tail gas spray treatment device provided by the utility model is as follows:

[0024] See also Figure 1-4 The chemical tail gas spray treatment device comprises a liquid tank 8 for containing liquid, a plurality of sub-tower bodies 1 and a circulating pump 9. In the present embodiment, three sub-tower bodies 1 are arranged, and the adjacent sub-tower bodies 1 are connected end to end through an air guide pipe 2, and the height of the three sub-tower bodies 1 increases successively from the head end to the tail end.

[0025] The lower part of the first tower body 1 is connected to an air inlet pipe 3 for conveying chemical tail gas; the upper end of the tail tower body 1 is connected to an exhaust pipe 4; the chemical tail gas passes through the three tower bodies 1 in sequence; the chemical tail gas inside the tower body 1 flows from bottom to top.

[0026] A spray rack 7 for spraying liquid toward the lower part of the sub-tower body 1 is arranged on the upper part of the three sub-tower bodies 1, and a plurality of nozzles or spray holes are arranged on the lower side of the spray rack 7; a circulating pump 9 guides the liquid in the liquid tank 8 into each spray rack 7 through a water pipe 10; the water pipe 10 includes a main water pipe and three branch water pipes, and the circulating pump 9 pumps the liquid into the main water pipe; the main water pipe and each spray rack 7 are connected through branch water pipes respectively.

[0027] The liquid tank 8 contains spray liquid. During specific implementation, acidic spray liquid or alkaline spray liquid can be selected according to the composition of chemical tail gas. The liquid tank 8 is located below the sub-tower body 1, and the lower ends of the three sub-tower bodies 1 are connected to the upper side of the liquid tank 8 through three drainage pipes 11 respectively.

[0028] In this way, the flow path of the chemical tail gas is single, and the return liquid path of the spray liquid, that is, the sub-tower body 1 and the drain pipe 11 are all three, so that the spray liquid is respectively in contact with the chemical tail gas in the three sub-tower bodies 1, and the harmful soluble components are dissolved in the liquid, so that the harmful substances in the chemical tail gas are treated. The liquid-gas ratio in each sub-tower body 1 is relatively balanced and close, and there is no obvious liquid-gas ratio difference, so that the gas and liquid can be more fully contacted, so that the treatment of the chemical tail gas is more complete and comprehensive.

[0029] A swirl plate 5 and a packing layer 6 are provided inside the sub-tower body 1; the swirl plate 5 is located at the lower part of the sub-tower body 1; the packing layer 6 is located in the middle part of the sub-tower body 1; the swirl plate 5 makes the chemical tail gas evenly distributed when entering each sub-tower body 1, ensuring full contact between gas and liquid; the packing layer 6 increases the surface area and slows down the falling speed of the spray liquid, so that the spray liquid is retained and fully contacts with the chemical tail gas, which is conducive to the harmful components in the chemical tail gas being fully dissolved in the liquid.

[0030] A demister 14 is provided in the tail sub-tower body 1, i.e., the sub-tower body 1 with the highest height. The demister 14 is located on the upper side of the spray rack 7 in the sub-tower body 1. In this embodiment, the demister 14 is a fiber demister, located on the inner side of the exhaust pipe 4, and has a fiber layer, which can remove water mist in the exhaust gas.

[0031] In this embodiment, a liquid replenishing tube 12 is provided on the upper side of the liquid tank 8, and a cover body 13 is provided on the upper end of the liquid replenishing tube 12. The cover body 13 is connected to the upper end of the liquid replenishing tube 12 by a thread, which is convenient for replenishing the spray liquid. In some embodiments, a sewage pipe is connected to the lower part of the liquid tank 8, and a valve is installed on the sewage pipe to facilitate the discharge of the spray liquid from the liquid tank 8.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A chemical tail gas spray treatment device, characterized in that: The invention comprises a liquid tank (8) for containing liquid, a plurality of sub-tower bodies (1) and a circulation pump (9); the adjacent sub-tower bodies (1) are connected end to end via an air guide pipe (2), and the chemical tail gas passes through each sub-tower body (1) in sequence; the liquid tank (8) is located below the sub-tower body (1), the lower ends of the sub-tower bodies (1) are connected to the liquid tank (8) via a liquid discharge pipe (11), and the upper parts of the sub-tower bodies (1) are provided with spray racks (7) for spraying liquid toward the lower parts of the sub-tower bodies (1); and the circulation pump (9) guides the liquid in the liquid tank (8) into each spray rack (7) via a water guide pipe (10).

2. The chemical tail gas spray treatment device according to claim 1, characterized in that: The chemical tail gas flow direction inside the sub-tower body (1) is from bottom to top; the lower part of the head sub-tower body (1) is connected to an intake pipe (3) for conveying the chemical tail gas; and the upper end of the tail sub-tower body (1) is connected to an exhaust pipe (4).

3. The chemical tail gas spray treatment device according to claim 1, characterized in that: The sub-tower body (1) is provided with a swirl plate (5) and a packing layer (6); the swirl plate (5) is located at the lower part of the sub-tower body (1); and the packing layer (6) is located in the middle part of the sub-tower body (1).

4. The chemical tail gas spray treatment device according to claim 1, characterized in that: The water guide pipe (10) comprises a main water pipe and a plurality of branch water pipes. The circulation pump (9) pumps liquid into the main water pipe. The main water pipe and each spray rack (7) are connected via branch water pipes.

5. The chemical tail gas spray treatment device according to claim 1 or 2, characterized in that: The sub-tower body (1) increases in height from the head end to the tail end.

6. The chemical tail gas spray treatment device according to claim 1, characterized in that: A liquid replenishing tube (12) is provided on the upper side of the liquid tank (8), and a cover body (13) is provided at the upper end of the liquid replenishing tube (12).

7. The chemical tail gas spray treatment device according to claim 1, characterized in that: A demister (14) is provided in the tail end sub-tower body (1), and the demister (14) is located on the upper side of the spray rack (7) in the sub-tower body (1).

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