Tail gas purification device

Abstract

The utility model provides a tail gas purification device. The tail gas purification device comprises a leaching tower; the spraying device is arranged in the leaching tower and comprises a spraying head, and the spraying head is configured to spray leacheate; the leacheate conveying pipe is connected with the spraying device and is configured to convey leacheate to the spraying device; the ozone injection device is configured to inject ozone into the leacheate in the leacheate conveying pipe; the water body catalytic ozonation module is arranged in the leaching tower and is positioned below the spraying device, so that the leacheate sprayed by the spraying head is sprayed to the water body catalytic ozonation module; the tail gas pipe is connected with the leaching tower and is configured to introduce tail gas to the lower part of the water body ozone catalytic oxidation module; and the air catalytic ozonation module is arranged on the tail gas pipe and is configured to utilize ozone to purify tail gas in the tail gas pipe. The tail gas purification device can achieve efficient purification of tail gas.

Description

Technical Field

[0001] This application relates to the field of environmental protection technologies, and particularly to an exhaust gas purification device. Background Art

[0002] During cigarette production and processing, it is necessary to add flavors and additives to the tobacco leaves. The exhaust gas collected during the production process contains various volatile organic compounds such as hydrocarbons, alcohols, and esters, and also contains a certain amount of odor gas. It is necessary to treat and purify it to achieve up-to-standard discharge and avoid harm to the human body and the environment. The treatment methods for cigarette production exhaust gas include low-temperature plasma treatment, water washing process, biological filter, adsorption method, etc.

[0003] In recent years, a process for treating waste gas by ozone synergistic washing has been proposed. This process combines simple ozone oxidation with the washing method for waste gas purification. Although ozone oxidation can have a certain effect on improving the purification of waste gas, the utilization rate of ozone is low and the reaction efficiency is low. Therefore, the improvement effect on waste gas purification is not obvious.

[0004] The above statements are only used to provide background technical information related to this application, and do not necessarily constitute prior art. Summary of the Invention

[0005] The purpose of this application is to provide an exhaust gas purification device, aiming to achieve efficient purification of exhaust gas.

[0006] This application provides an exhaust gas purification device, including:

[0007] A washing tower;

[0008] A spraying device, arranged inside the washing tower, including a spray head configured to spray a washing liquid;

[0009] A washing liquid delivery pipe, connected to the spraying device and configured to deliver the washing liquid to the spraying device;

[0010] An ozone injection device configured to inject ozone into the washing liquid in the washing liquid delivery pipe;

[0011] A water body ozone catalytic oxidation module, arranged inside the washing tower and located below the spraying device, so that the washing liquid sprayed by the spray head is sprayed onto the water body ozone catalytic oxidation module;

[0012] An exhaust gas pipe, connected to the washing tower and configured to introduce exhaust gas below the water body ozone catalytic oxidation module; and

[0013] An air ozone catalytic oxidation module, arranged on the exhaust gas pipe and configured to purify the exhaust gas in the exhaust gas pipe by using ozone.

[0014] In the tail gas purification device of some embodiments, the tail gas purification device further includes:

[0015] An ozone generation device for generating ozone; and

[0016] An ozone delivery pipe connecting the ozone generation device to the ozone injection device and the air ozone catalytic oxidation module for delivering the ozone generated by the ozone generation device to the ozone injection device and the air ozone catalytic oxidation module.

[0017] In the tail gas purification device of some embodiments, the tail gas purification device further includes a flow control device disposed on the ozone delivery pipe and configured to adjust the flow rate of the ozone delivered to the ozone injection device and / or the air ozone catalytic oxidation module.

[0018] In the tail gas purification device of some embodiments, the tail gas purification device further includes a wash liquid delivery pump disposed on the wash liquid delivery pipe and configured to drive the wash liquid in the wash liquid delivery pipe to flow toward the spray device.

[0019] In the tail gas purification device of some embodiments, the tail gas purification device further includes a wash liquid tank, and the wash liquid delivery pipe is connected to the wash liquid tank to deliver the wash liquid in the wash liquid tank to the spray device.

[0020] In the tail gas purification device of some embodiments, the tail gas purification device further includes a wash liquid recovery pipe connected between the wash tower and the wash liquid tank and configured to recover the wash liquid in the wash tower to the wash liquid tank.

[0021] In the tail gas purification device of some embodiments, the tail gas purification device further includes a wash liquid recovery pump configured to drive the wash liquid in the wash liquid recovery pipe to flow toward the wash liquid tank.

[0022] In the tail gas purification device of some embodiments, the tail gas purification device further includes a tail gas fan configured to drive the tail gas in the tail gas pipe to flow toward the wash tower.

[0023] In the tail gas purification device of some embodiments, the tail gas purification device further includes an ozone decomposition module configured to decompose the ozone in the exhaust gas formed after the tail gas treatment is completed in the wash tower.

[0024] In the tail gas purification device of some embodiments, the tail gas purification device further includes an exhaust pipe connected to the wash tower and configured to output the exhaust gas formed after the tail gas treatment is completed in the wash tower, and the ozone decomposition module is disposed on the exhaust pipe.

[0025] Based on the tail gas purification device provided by the present application, ozone can be injected into the washing liquid in the input washing liquid delivery pipe through an ozone injection device; the washing liquid containing ozone is sprayed through the spray heads of the spraying device, so that the washing liquid containing ozone sprayed by the spray heads is sprayed onto the water body ozone catalytic oxidation module; the air ozone catalytic oxidation module uses ozone to purify the tail gas in the tail gas pipe and introduces the tail gas purified by ozone into the lower part of the water body ozone catalytic oxidation module in the washing tower; the tail gas entering the washing tower passes upward through the water body ozone catalytic oxidation module and is further purified in the water body ozone catalytic oxidation module; after the washing tower completes the tail gas treatment, exhaust gas is formed. Thus, the tail gas purification device can achieve ozone catalytic oxidation treatment of air in the air ozone catalytic oxidation module and ozone catalytic oxidation treatment of water body in the water body ozone catalytic oxidation module. During the ozone catalytic oxidation treatment of air, ozone is excited by an ozone catalytic oxidant to generate active free radicals, which rapidly decompose gaseous pollutants in the air, especially oxidize a large amount of low-water-soluble volatile organic compounds in the tail gas, and convert them into highly water-soluble pollutants or directly mineralize them into carbon dioxide. During the ozone catalytic oxidation treatment of the water body, after the air ozone catalytic oxidation process, the water solubility of pollutants in the tail gas is significantly improved, which is beneficial to improving the removal effect of the subsequent washing process, and at the same time, the total amount of pollutants in the tail gas will be significantly reduced. After entering the washing tower, a large amount of gaseous pollutants in the tail gas will be transferred to the water body through the washing process. At the same time, due to the coupling of the water body ozone catalytic oxidation in this process, the water body ozone catalyst will further use ozone to rapidly oxidize the pollutants dissolved in the water body. Therefore, the tail gas purification device can achieve efficient purification of tail gas.

[0026] Other features and advantages of the present application will become clear from the following detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings. Description of the Drawings

[0027] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The exemplary embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings:

[0028] Figure 1 It is a schematic structural diagram of the principle of the cigarette production tail gas purification device according to the embodiment of the present application. Detailed Embodiments

[0029] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way restricts the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0030] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0031] In the description of the present application, it should be understood that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Without further statement, the above terms have no special meanings, and thus cannot be construed as limiting the scope of protection of the present application.

[0032] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the orientation terms is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. Without contrary description, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be construed as limiting the scope of protection of the present application; the orientation terms "inside" and "outside" refer to the inside and outside relative to the contour of each component itself.

[0033] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0034] As Figure 1 shown, the embodiments of the present application provide an exhaust gas purification device.

[0035] The tail gas purification device includes a scrubbing tower 1, a spraying device 2, a scrubbing liquid delivery pipe 13, an ozone injection device 9, a water body ozone catalytic oxidation module 3, a tail gas pipe 14, and an air ozone catalytic oxidation module 11.

[0036] The spraying device 2 is arranged inside the scrubbing tower 1 and includes a spray head 21 which is configured to spray the scrubbing liquid.

[0037] The scrubbing liquid delivery pipe 13 is connected to the spraying device 2 and is configured to deliver the scrubbing liquid to the spraying device 2.

[0038] The ozone injection device 9 is configured to inject ozone into the scrubbing liquid inside the scrubbing liquid delivery pipe 13.

[0039] The water body ozone catalytic oxidation module 3 is arranged inside the scrubbing tower 1 and is located below the spraying device 2 so that the scrubbing liquid sprayed by the spray head 21 is sprayed onto the water body ozone catalytic oxidation module 3.

[0040] The tail gas pipe 14 is connected to the scrubbing tower 1 and is configured to introduce the tail gas below the water body ozone catalytic oxidation module 3.

[0041] The air ozone catalytic oxidation module 11 is arranged on the tail gas pipe 14 and is configured to purify the tail gas inside the tail gas pipe 14 by using ozone.

[0042] According to the tail gas purification device of this embodiment, the following can be achieved: injecting ozone into the washing liquid in the input washing liquid delivery pipe 13 through the ozone injection device 9; spraying the washing liquid containing ozone through the spray head 21 of the spraying device 2, so that the washing liquid containing ozone sprayed by the spray head 21 is sprayed onto the water body ozone catalytic oxidation module 3; using the air ozone catalytic oxidation module 11 to purify the tail gas in the tail gas pipe 14 with ozone and introducing the tail gas purified by ozone into the lower part of the water body ozone catalytic oxidation module 3 in the washing tower 1; the tail gas entering the washing tower 1 passes upward through the water body ozone catalytic oxidation module 3 and is further purified in the water body ozone catalytic oxidation module 3; after the washing tower 1 completes the tail gas treatment, exhaust gas is formed. Thus, this tail gas purification device can achieve ozone catalytic oxidation treatment in the air in the air ozone catalytic oxidation module 11 and water body ozone catalytic oxidation treatment in the water body ozone catalytic oxidation module 3. During the ozone catalytic oxidation treatment in the air, ozone is excited by the ozone catalytic oxidant to generate active free radicals, which rapidly decompose gaseous pollutants in the air, especially oxidize a large amount of volatile organic compounds with low water solubility in the tail gas, etc., and convert them into pollutants with high water solubility or directly mineralize them into carbon dioxide. During the water body ozone catalytic oxidation treatment, after the air ozone catalytic oxidation process, the water solubility of the pollutants in the tail gas is significantly improved, which is beneficial to improving the removal effect of the later washing process, and at the same time, the total amount of pollutants in the tail gas will be significantly reduced. After entering the washing tower 1, a large amount of gaseous pollutants in the tail gas will be transferred to the water body through the washing process, and at the same time, due to the coupling of the water body ozone catalytic oxidation in this process, the water body ozone catalyst will further use ozone to rapidly oxidize the pollutants dissolved in the water body. Therefore, this tail gas purification device can achieve efficient purification of the tail gas.

[0043] As Figure 1 shown, in the tail gas purification device of some embodiments, the tail gas purification device further includes an ozone generation device 7 and an ozone delivery pipe 16. The ozone generation device 7 is used to generate ozone. The ozone delivery pipe 16 connects the ozone generation device 7 with the ozone injection device 9 and the air ozone catalytic oxidation module 11, and is used to deliver the ozone generated by the ozone generation device 7 to the ozone injection device 9 and the air ozone catalytic oxidation module 11.

[0044] As Figure 1 shown, in the tail gas purification device of some embodiments, the tail gas purification device further includes a flow control device 8. The flow control device 8 is arranged on the ozone delivery pipe 16 and is configured to adjust the flow rate of the ozone delivered to the ozone injection device 9 and / or the air ozone catalytic oxidation module 11. In Figure 1 the embodiment shown, the ozone delivery pipe 16 includes an ozone delivery main pipe and two ozone delivery branch pipes respectively leading to the ozone injection device 9 and the air ozone catalytic oxidation module 11. The pipe flow control device 8 is a three-way control valve arranged at the junction of the ozone delivery main pipe and the two ozone delivery branch pipes.

[0045] As Figure 1 shown, in the tail gas purification device of some embodiments, the tail gas purification device further includes a washing liquid delivery pump 5. The washing liquid delivery pump 5 is arranged on the washing liquid delivery pipe 13 and is configured to drive the washing liquid in the washing liquid delivery pipe 13 to flow towards the spraying device 2.

[0046] As Figure 1 shown, in the tail gas purification device of some embodiments, the tail gas purification device further includes a washing liquid tank 4. The washing liquid delivery pipe 13 is connected to the washing liquid tank 4 to deliver the washing liquid in the washing liquid tank 4 to the spraying device 2.

[0047] As Figure 1 shown, in the tail gas purification device of some embodiments, the tail gas purification device further includes a washing liquid recovery pipe 15. The washing liquid recovery pipe 15 is connected between the washing tower 1 and the washing liquid tank 4 and is configured to recover the washing liquid in the washing tower 1 to the washing liquid tank 4.

[0048] As Figure 1 shown, in the tail gas purification device of some embodiments, the tail gas purification device further includes a washing liquid recovery pump 6, which is configured to drive the washing liquid in the washing liquid recovery pipe 15 to flow towards the washing liquid tank 4.

[0049] As Figure 1 shown, in the tail gas purification device of some embodiments, the tail gas purification device further includes a tail gas fan 10, which is configured to drive the tail gas in the tail gas pipe 14 to flow towards the washing tower 1.

[0050] As Figure 1 shown, in the tail gas purification device of some embodiments, the tail gas purification device further includes an ozone decomposition module 12. The ozone decomposition module 12 is configured to decompose the ozone in the exhaust gas formed after the tail gas treatment in the washing tower 1.

[0051] The ozone decomposition module 12 can catalytically decompose the ozone in the exhaust gas. The exhaust gas output from the washing tower 1 undergoes ozone catalytic decomposition. For example, through an ozone grading catalyst, efficient decomposition of the ozone in the washing tower exhaust gas is achieved, which helps to avoid the harm of residual ozone in the exhaust gas to the human body and the environment. The ozone decomposition module 12 includes, for example, an ozone grading catalyst in the shape of honeycomb ceramics.

[0052] As Figure 1 shown, in the tail gas purification device of some embodiments, the tail gas purification device further includes an exhaust pipe 17. The exhaust pipe 17 is connected to the washing tower 1 and is configured to output the exhaust gas formed after the tail gas treatment in the washing tower 1. The ozone decomposition module 12 is arranged on the exhaust pipe 17.

[0053] The second aspect of the present application provides a tail gas purification method using the tail gas purification device of the first aspect of the present application, including:

[0054] Ozone is injected into the eluent in the input eluent delivery pipe 13 through the ozone injection device 9;

[0055] The eluent containing ozone is sprayed through the spray head 21 of the spraying device 2, so that the eluent containing ozone sprayed by the spray head 21 is sprayed onto the water body ozone catalytic oxidation module 3;

[0056] The air ozone catalytic oxidation module 11 purifies the tail gas in the tail gas pipe 14 by using ozone and feeds the tail gas purified by using ozone into the lower part of the water body ozone catalytic oxidation module 3 in the scrubbing tower 1;

[0057] The tail gas entering the scrubbing tower 1 passes upward through the water body ozone catalytic oxidation module 3 and is further purified in the water body ozone catalytic oxidation module 3; and

[0058] After the scrubbing tower 1 finishes treating the tail gas, exhaust gas is formed.

[0059] The tail gas purification method of the embodiment of the present application has the same advantages as the tail gas purification device of the embodiment of the present application.

[0060] In the tail gas purification method of some embodiments, the tail gas purification method further includes: adjusting the flow rate of ozone delivered to the ozone injection device 9 and / or the air ozone catalytic oxidation module 11.

[0061] In the tail gas purification method of some embodiments, the tail gas purification method further includes: decomposing ozone in the exhaust gas by using the ozone decomposition module 12.

[0062] Those skilled in the art can understand that in the above method of the specific embodiment, the writing order of each step does not mean a strict execution order and does not constitute any limitation to the implementation process. The specific execution order of each step should be determined according to its function and possible internal logic.

[0063] The following will be combined with Figure 1 The tail gas treatment device and the tail gas treatment method of the embodiment of the present application will be further described. The tail gas in this embodiment is, for example, cigarette production waste gas.

[0064] Figure 1 The tail gas treatment device shown includes: a scrubbing tower 1, a spraying device 2, an eluent delivery pipe 13, an ozone injection device 9, a water body ozone catalytic oxidation module 3, a tail gas pipe 14, an air ozone catalytic oxidation module 11, an ozone generation device 7, an ozone delivery pipe 16, a flow control device 8, an eluent tank 4, an eluent delivery pump 5, an eluent recovery pipe 15, an eluent recovery pump 6, a tail gas fan 10, an ozone decomposition module 12, and an exhaust pipe 17.

[0065] The spraying device 2 and the water body ozone catalytic oxidation module 3 are located inside the scrubbing tower 1, and the spray heads 21 of the spraying device 2 are located above the water body ozone catalytic oxidation module 3.

[0066] The ozone generating device 7 is connected to the ozone injection device 9 and the air ozone catalytic oxidation module 11 through the ozone delivery pipe 16. The flow control device 8 is arranged on the ozone delivery pipe 16.

[0067] The scrubbing liquid tank 4 is connected to the spraying device 2 through the scrubbing liquid delivery pipe 13. The scrubbing liquid delivery pump 5 and the ozone injection device 9 are arranged on the scrubbing liquid delivery pipe 13. The scrubbing liquid delivery pump 5 is located upstream of the ozone injection device 9.

[0068] The tail gas pipe 14 is connected to the scrubbing tower 1 and passes the tail gas into the area below the water body ozone catalytic oxidation module 3. The tail gas fan 10 and the air ozone catalytic oxidation module 11 are arranged on the tail gas pipe 14. One ozone delivery branch pipe of the ozone delivery pipe 16 is connected to the tail gas pipe 14, and the connection point is located upstream of the air ozone catalytic oxidation module 11.

[0069] The scrubbing liquid recovery pipe 15 is connected between the bottom of the scrubbing tower 1 and the scrubbing liquid tank 4, and the scrubbing liquid recovery pump 6 is arranged on the scrubbing liquid recovery pipe 15.

[0070] The exhaust pipe 17 is connected to the top of the scrubbing tower 1. The ozone decomposition module 12 is arranged on the exhaust pipe 17.

[0071] Among them, the scrubbing liquid is, for example, scrubbing water, and the scrubbing water can be, for example, tap water or reclaimed intermediate water after sewage treatment. To further improve the treatment efficiency, the scrubbing water can also be an alkaline chemical scrubbing liquid.

[0072] The ozone generating device 7 uses an ozone generator. The ozone injection device 9 is a Venturi injector. The air ozone catalytic oxidation module 11 is arranged in front of the tail gas inlet of the scrubbing tower 1 and is a honeycomb ceramic-shaped ozone catalyst. The water body ozone catalytic oxidation module 3 is placed below the spraying device 2 in the scrubbing tower 1 and is a spherical water body ozone catalyst packing layer. The ozone decomposition module 12 is placed behind the exhaust outlet of the scrubbing tower 1 and is a honeycomb ceramic-shaped ozone grading catalyst.

[0073] The tail gas treatment device of this embodiment adopts a multi-stage ozone catalytic oxidation process, including a three-stage tail gas treatment process:

[0074] 1. Ozone catalytic oxidation in the air: It is carried out in the air ozone catalytic oxidation module 11. Ozone is excited by the ozone catalyst to generate active free radicals, which quickly decompose gaseous pollutants in the air. In particular, a large amount of low-water-soluble volatile organic compounds in the cigarette production waste gas are oxidized, converted into high-water-soluble pollutants or directly mineralized to form carbon dioxide.

[0075] 2. Catalytic oxidation of ozone in water: It is carried out in the catalytic oxidation module of ozone in water in the scrubbing tower 1. After the air ozone catalytic oxidation process, the water solubility of pollutants in the tail gas is significantly improved, which is beneficial to improving the removal effect of the subsequent scrubbing process. At the same time, the total amount of pollutants in the tail gas will be significantly reduced. After entering the scrubbing tower, a large amount of gaseous pollutants in the tail gas will be transferred to the water through the scrubbing process. At the same time, due to the coupling of the catalytic oxidation of ozone in water in this process, the catalyst of ozone in water will further utilize ozone to rapidly oxidize the pollutants dissolved in the water.

[0076] 3. Catalytic decomposition of ozone: It is carried out in the ozone decomposition module 12. The exhaust gas of the scrubbing tower 1 undergoes catalytic decomposition of ozone, and the ozone in the tail gas of the scrubbing tower is efficiently decomposed through the ozone grading catalyst, avoiding the harm of residual ozone introduced into the treatment system to the human body and the environment.

[0077] The working process of the tail gas purification device of this embodiment for purifying tail gas, such as the waste gas in cigarette production, is as follows:

[0078] Ozone is generated by the ozone generating device 7. The generated ozone is divided into two paths through the three-way control valve serving as the flow control device 8, and the dosage of ozone in the two gas paths is controlled. The ozone generated in one path is directly introduced into the tail gas pipe 14 upstream of the air ozone catalytic oxidation module 11, and is evenly mixed with the tail gas therein. The mixed waste gas is rapidly purified through the air ozone catalytic oxidation module 11. The tail gas purified by the air ozone catalytic oxidation module 11 is introduced into the bottom of the scrubbing tower 1 through the tail gas pipe 14. The ozone generated in the other path is dispersed into the scrubbing liquid in the scrubbing liquid conveying pipe 13 through the venturi injector serving as the ozone injection device 9, and is evenly sprayed downward through the spray heads 21 of the spray device 2 in the scrubbing tower 1. The sprayed scrubbing liquid comes into efficient contact with the tail gas flowing from bottom to top in the scrubbing tower 1. At the same time, the catalytic oxidation module of ozone in water 3 is placed directly below the spray head 21. After the catalytic oxidation module of ozone in water 3 comes into contact with the scrubbing liquid, it utilizes the ozone in the scrubbing liquid to rapidly degrade and transfer the pollutants dissolved in the scrubbing liquid. The scrubbing liquid can be recycled to the scrubbing liquid tank 4 through the scrubbing liquid recovery pipe 15 and the scrubbing liquid recovery pump 6 for reuse after being collected at the bottom of the scrubbing tower 1, or it can be directly discharged. The exhaust gas highly purified by the scrubbing tower 1 is discharged from the exhaust port at the top of the scrubbing tower 1 to the exhaust pipe 17. An ozone decomposition module 12 is provided on the exhaust pipe 17, and the ozone decomposition module 12 rapidly decomposes the residual ozone gas in the tail gas, thus avoiding the impact and harm of ozone on the environment and the human body and achieving ultra-clean emission of the purified tail gas.

[0079] According to the above description, the tail gas treatment device and method of the embodiments of the present application can efficiently purify tail gas, for example, can efficiently purify the waste gas generated in cigarette production. The catalytic oxidation of ozone in air, the catalytic oxidation of ozone in water body and the catalytic decomposition of ozone form a multi-stage catalytic oxidation of ozone. Combined with the flushing process, the tail gas can be directly treated and purified, while strengthening the transfer of gaseous pollutants in the tail gas to the flushing liquid, improving the purification effect of the flushing liquid. In addition, it is also beneficial to improve the removal efficiency of the pollutants transferred to the flushing liquid, realize the purification of the flushing water, and meet the standards for reuse or discharge. It is also beneficial to solve the problem of residual pollution of ozone introduced into the tail gas purification device. The tail gas treatment device and method of this embodiment can efficiently, continuously operate and treat waste gas at low cost.

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them; although the present application has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: it is still possible to modify the specific implementation manners of the present application or perform equivalent replacements on some technical features, and they should all be covered within the scope of the technical solutions claimed in the present application.

Claims

1. An exhaust gas purification device, characterized in that: include: Elution tower (1); A spray device (2), arranged in the elution tower (1), comprising a spray head (21), wherein the spray head (21) is configured to spray an elution liquid; an eluent delivery pipe (13), connected to the spray device (2) and configured to deliver the eluent to the spray device (2); an ozone injection device (9) configured to inject ozone into the eluent in the eluent delivery pipe (13); The water body ozone catalytic oxidation module (3) is arranged in the elution tower (1) and is located below the spray device (2), so that the elution liquid sprayed by the spray head (21) is sprayed onto the water body ozone catalytic oxidation module (3); A tail gas pipe (14) is connected to the leaching tower (1) and is configured to introduce tail gas to the bottom of the water body ozone catalytic oxidation module (3); and The air ozone catalytic oxidation module (11) is arranged on the tail gas pipe (14) and is configured to purify the tail gas in the tail gas pipe (14) by using ozone.

2. The exhaust gas purification device according to claim 1, characterized in that: Also includes: an ozone generating device (7) for generating ozone; and An ozone delivery pipe (16) connects the ozone generating device (7) with the ozone injection device (9) and the air ozone catalytic oxidation module (11), and is used to deliver ozone generated by the ozone generating device (7) to the ozone injection device (9) and the air ozone catalytic oxidation module (11).

3. The exhaust gas purification device according to claim 2, characterized in that: It also includes a flow control device (8), which is arranged on the ozone delivery pipe (16) and is configured to adjust the flow of ozone delivered to the ozone injection device (9) and / or the air ozone catalytic oxidation module (11).

4. The exhaust gas purification device according to claim 1, characterized in that: It also comprises a eluent delivery pump (5), which is arranged on the eluent delivery pipe (13) and is configured to drive the eluent in the eluent delivery pipe (13) to flow toward the spray device (2).

5. The exhaust gas purification device according to claim 1, characterized in that: It also comprises a elution liquid box (4), and the elution liquid delivery pipe (13) is connected to the elution liquid box (4) to deliver the elution liquid in the elution liquid box (4) to the spraying device (2).

6. The exhaust gas purification device according to claim 5, characterized in that: It also includes an eluent recovery pipe (15), which is connected between the eluent tower (1) and the eluent tank (4) and is configured to recover the eluent in the eluent tower (1) to the eluent tank (4).

7. The exhaust gas purification device according to claim 6, characterized in that: It also includes an eluent recovery pump (6) configured to drive the eluent in the eluent recovery pipe (15) to flow toward the eluent tank (4).

8. The exhaust gas purification device according to claim 1, characterized in that: It also includes an exhaust gas fan (10) configured to drive the exhaust gas in the exhaust gas pipe (14) to flow toward the leaching tower (1).

9. The exhaust gas purification device according to any one of claims 1 to 8, characterized in that: It also comprises an ozone decomposition module (12), wherein the ozone decomposition module (12) is configured to decompose ozone in the exhaust gas formed after the exhaust gas treatment is completed in the leaching tower (1).

10. The exhaust gas purification device according to claim 9, characterized in that: It also comprises an exhaust pipe (17), the exhaust pipe (17) being connected to the leaching tower (1) and being configured to output exhaust gas generated after the leaching tower (1) completes tail gas treatment, and the ozone decomposition module (12) is arranged on the exhaust pipe (17).

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