A photocatalytic waste gas treatment device

By setting a cyclone separator and a filter mechanism at the front end of the photooxygen catalytic exhaust gas treatment device, the oil fume or dust in the exhaust gas is solved, and the problem of photocatalyst failure directly through the treatment equipment is solved, extending the service life of the equipment and reducing the treatment cost.

CN222694423UActive Publication Date: 2025-04-01WUHAN TUOJIAN LAB CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202323666138.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2023-12-29
Publication Date
2025-04-01
Estimated Expiration
2033-12-29

AI Technical Summary

Technical Problem

When the exhaust gas containing a large amount of oil smoke or dust passes directly through the photooxygen catalytic waste gas treatment equipment, it is easy to cause the photocatalyst to fail and affect the service life of the equipment.

Method used

A photooxygen catalytic exhaust gas treatment device is designed, including a cyclone separator and a filtering mechanism. The cyclone separator is used to separate oil fume or dust in the exhaust gas, and the filtering mechanism further filters residual particles to prevent them from entering the photooxygen catalytic mechanism.

Benefits of technology

By separating the oil smoke or dust in the exhaust gas and preventing it from entering the photooxygen catalyst directly, the service life of the photooxygen catalyst is extended and the cost of waste gas treatment is reduced.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN222694423U_ABST
    Figure CN222694423U_ABST
Patent Text Reader

Abstract

The utility model discloses a photocatalytic waste gas treatment device, including a cyclone separator, a filtering mechanism and a photocatalytic mechanism; the air inlet of the cyclone separator is used to introduce waste gas; the inlet of the filtering mechanism is connected with the air outlet of the cyclone separator; the photocatalytic mechanism includes a photocatalytic housing, a photocatalytic net and a plurality of ultraviolet lamps, the photocatalytic housing has a closed accommodating cavity, and the two ends of the photocatalytic housing are respectively provided with a photocatalytic inlet and a photocatalytic outlet connected with the accommodating cavity, the photocatalytic inlet is connected with the outlet of the filtering mechanism, and the photocatalytic net and the ultraviolet lamp are fixed in the accommodating cavity. The beneficial effect of the technical solution proposed by the utility model is that by arranging a cyclone separator and a filtering mechanism at the front end of the photocatalytic mechanism, the oil smoke or dust in the waste gas can be separated, and the oil smoke or dust is prevented from directly entering the photocatalytic mechanism, which leads to a shortened service life of the photocatalytic mechanism, and the waste gas treatment cost is reduced.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the technical field of photo-oxygen catalysis, in particular to a photo-oxygen catalysis waste gas treatment device. Background Art

[0002] Photocatalytic waste gas treatment equipment is a special equipment for removing odors. It has a wide range of applications. Deodorization equipment is widely used in waste gas treatment in paint plants, paper mills, ink factories, pharmaceutical factories, feed mills, etc. The principle of photocatalytic waste gas treatment is mainly to use photocatalysts to convert harmful substances in waste gas into harmless substances under light conditions. Specifically, photocatalytic oxidation uses high-energy ultraviolet light beams to irradiate waste gas, so that the molecular chains of organic or inorganic high-molecular odorous compounds are degraded and transformed into low-molecular compounds under the irradiation of high-energy ultraviolet light beams. At the same time, photocatalytic oxidation uses oxygen molecules to produce free oxygen, that is, active oxygen. Because the positive and negative electrons carried by free oxygen are unbalanced, it needs to combine with oxygen molecules to produce ozone. Then the molecular bonds of bacteria are used to destroy the nucleic acid of bacteria, and then the oxidation reaction is carried out through ozone to achieve the purpose of purifying and killing bacteria.

[0003] However, in some cases, when it is necessary to treat waste gas containing a large amount of oil smoke or dust, if the waste gas containing a large amount of oil smoke or dust is directly passed through the photocatalytic waste gas treatment equipment, it is easy to cause the photocatalyst to fail and affect the service life of the equipment. Utility Model Content

[0004] In view of this, it is necessary to provide a photocatalytic exhaust gas treatment device to solve the technical problem that exhaust gas containing a large amount of oil smoke or dust directly passes through the photocatalytic exhaust gas treatment equipment, which easily leads to photocatalyst failure and affects the service life of the equipment.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a photo-oxidation catalytic exhaust gas treatment device, including a cyclone separator, a filtering mechanism and a photo-oxidation catalytic mechanism;

[0006] The air inlet of the cyclone separator is used to introduce exhaust gas;

[0007] The inlet of the filtering mechanism is in communication with the air outlet of the cyclone separator;

[0008] The photo-oxidation catalytic mechanism comprises a photo-oxidation catalyst housing, a photo-oxidation net and a plurality of ultraviolet lamps. The photo-oxidation catalyst housing has a closed accommodating cavity. A photo-oxidation inlet and a photo-oxidation outlet communicating with the accommodating cavity are respectively provided at both ends of the photo-oxidation catalyst housing. The photo-oxidation inlet is communicated with the outlet of the filtering mechanism. The photo-oxidation net and the ultraviolet lamp are both fixed in the accommodating cavity.

[0009] In some embodiments, the photo-oxidation catalytic exhaust gas treatment device further includes an air collecting hood, and an outlet of the air collecting hood is connected to an air inlet of the cyclone separator through a first pipeline.

[0010] In some embodiments, the inlet of the filtering mechanism is connected to the air outlet of the cyclone separator via a second pipe.

[0011] In some embodiments, the filtering mechanism includes a filter shell and a filter frame, and a filter inlet and a filter outlet are respectively opened at both ends of the filter shell, and the filter inlet is connected to the air outlet of the cyclone separator. The filter frame is used to encapsulate activated carbon, and the filter frame is arranged in the filter shell.

[0012] In some embodiments, a socket is provided on the side wall of the filter housing, and the filter frame includes a filter frame body and a side panel. The filter frame body is used to encapsulate activated carbon, and the side panel is fixed to the side of the filter frame body. The side panel is detachably connected to the filter housing and is used to cover the opening of the socket, and a handle is fixed on the side panel.

[0013] In some embodiments, the side plate is connected to the filter housing via a plurality of fixing screws.

[0014] In some embodiments, the photo-oxidation catalytic mechanism further includes a coarse filter, and the coarse filter is fixed in the photo-catalytic inlet.

[0015] In some embodiments, the photo-oxygen catalytic mechanism further includes a fixing plate, the fixing plate is fixed in the housing of the photo-oxygen catalyst, and each of the ultraviolet lamps is fixed to the fixing plate.

[0016] In some embodiments, the photo-oxidation catalytic mechanism further includes an activated carbon mesh, and the activated carbon mesh is fixed to the photo-catalytic outlet.

[0017] In some embodiments, the photo-oxidation catalytic exhaust gas treatment device further includes an exhaust fan, and an inlet of the exhaust fan is connected to the photo-catalytic outlet.

[0018] Compared with the prior art, the technical solution proposed by the utility model has the beneficial effect that by arranging a cyclone separator and a filtering mechanism at the front end of the photo-oxidation catalytic mechanism, the oil smoke or dust in the exhaust gas can be separated, preventing the oil smoke or dust from directly entering the photo-oxidation catalytic mechanism and shortening the service life of the photo-oxidation catalytic mechanism, thereby reducing the exhaust gas treatment cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of an embodiment of the photo-oxidation catalytic waste gas treatment device provided by the utility model;

[0020] Figure 2 yes Figure 1 A schematic diagram of the structure of the filtering mechanism in FIG.

[0021] Figure 3 yes Figure 2 A partial enlarged view of the middle area A;

[0022] Figure 4 yes Figure 2 Schematic diagram of the structure of the photo-oxidation catalytic mechanism;

[0023] In the figure: 1-cyclone separator, 11-second pipeline, 2-filter mechanism, 21-filter housing, 211-filter inlet, 212-filter outlet, 22-filter frame, 221-filter frame body, 222-side plate, 2221-fixing screw, 223-handle, 3-photocatalytic mechanism, 31-photocatalytic housing, 311-photocatalytic inlet, 312-photocatalytic outlet, 32-photocatalytic net, 33-ultraviolet lamp, 34-coarse filter net, 35-fixing plate, 36-activated carbon net, 4-gas collecting hood, 41-first pipeline, 5-exhaust fan. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0025] Please refer to Figure 1 The utility model provides a photo-oxidation catalytic exhaust gas treatment device, comprising a cyclone separator 1, a filtering mechanism 2 and a photo-oxidation catalytic mechanism 3;

[0026] The air inlet of the cyclone separator 1 is used to introduce exhaust gas;

[0027] The inlet of the filtering mechanism 2 is communicated with the air outlet of the cyclone separator 1;

[0028] The photo-oxidation catalytic mechanism 3 includes a photo-oxidation catalytic housing 31, a photo-oxidation net 32 ​​and a plurality of ultraviolet lamps 33. The photo-oxidation catalytic housing 31 has a closed accommodating cavity. The two ends of the photo-oxidation catalytic housing 31 are respectively provided with a photo-oxidation inlet 311 and a photo-oxidation outlet 312 connected to the accommodating cavity. The photo-oxidation inlet 311 is connected to the outlet of the filtering mechanism 2. The photo-oxidation net 32 ​​and the ultraviolet lamp 33 are both fixed in the accommodating cavity.

[0029] When in use, the exhaust gas containing oil smoke or dust is introduced into the air inlet of the cyclone separator 1. When the exhaust gas containing oil smoke or dust enters the cyclone separator, the gas generates a strong rotation motion. In this process, the dust or oil smoke particles in the exhaust gas are thrown to the wall of the device under the action of centrifugal force, and fall along the wall surface and are discharged from the discharge port, while the gas is discharged from the air outlet at the top. At this time, the exhausted exhaust gas still contains dust or oil smoke particles with smaller particle sizes. When the exhaust gas passes through the filtering mechanism 2, these dust or oil smoke particles with smaller particle sizes can be separated. The separated gas enters the photo-oxidation catalyst housing 31, and the high-energy radiation emitted by the ultraviolet lamp 33 The UV ultraviolet light beam can crack the molecular bonds of bacteria in the malodorous gas and destroy the nucleic acid of bacteria. At the same time, the ultraviolet light beam decomposes the oxygen molecules in the air to produce free oxygen. Because the free oxygen is unstable, it needs to combine with oxygen molecules to produce ozone. Ozone reacts with bacteria to further kill bacteria. In addition, when the ultraviolet light beam is irradiated on the photocatalytic net 32, the photocatalyst on the photocatalytic net 32 ​​produces free radicals or active oxygen, which has a strong oxidizing ability and can convert some difficult-to-degrade organic substances into harmless or low-harmful substances, thereby achieving the purpose of purifying the exhaust gas. The purified gas is discharged from the photocatalytic outlet 312. In the utility model, by arranging a cyclone separator 1 and a filter mechanism 2 at the front end of the photocatalytic mechanism 3, the oil smoke or dust in the exhaust gas can be separated, and the oil smoke or dust is prevented from directly entering the photocatalytic mechanism 3, which shortens the service life of the photocatalytic mechanism 3 and reduces the cost of exhaust gas treatment.

[0030] To facilitate the collection of production waste gas, please refer to Figure 1 In a preferred embodiment, the photo-oxidation catalytic exhaust gas treatment device further comprises an air collecting hood 4 , and the outlet of the air collecting hood 4 is connected to the air inlet of the cyclone separator 1 through a first pipe 41 .

[0031] In order to realize the connection between the inlet of the filter mechanism 2 and the outlet of the cyclone separator 1, please refer to Figure 1 In a preferred embodiment, the inlet of the filtering mechanism 2 is connected to the air outlet of the cyclone separator 1 via a second pipe 11.

[0032] In order to realize the function of the filter mechanism 2, please refer to Figure 1-Figure 3 In a preferred embodiment, the filter mechanism 2 includes a filter housing 21 and a filter frame 22. A filter inlet 211 and a filter outlet 212 are respectively provided at both ends of the filter housing. The filter inlet 211 is connected to the air outlet of the cyclone separator 1. The filter frame 22 is used to encapsulate activated carbon. The filter frame 22 is arranged in the filter housing 21.

[0033] To facilitate the replacement of the activated carbon in the filter frame 22, please refer to Figure 1-Figure 3In a preferred embodiment, a plug hole is provided on the side wall of the filter housing 21, and the filter frame 22 includes a filter frame body 221 and a side plate 222. The filter frame body 221 is used to encapsulate activated carbon, and the side plate 222 is fixed to the side of the filter frame body 221. The side plate 222 is detachably connected to the filter housing 21 and is used to cover the opening of the plug hole. A handle 223 is fixed on the side plate 222 to facilitate pulling out. When the activated carbon in the filter frame 22 needs to be replaced, the filter frame body 221 is pulled out, the activated carbon therein is replaced, and the filter frame body 221 is inserted into the opening, and then the side plate 222 is fixedly connected to the filter housing 21, so that the activated carbon in the filter frame 22 can be replaced.

[0034] In order to realize the detachable connection between the side plate 222 and the filter housing 21, please refer to Figure 1-Figure 3 In a preferred embodiment, the side plate 222 is connected to the filter housing 21 via a plurality of fixing screws 2221 .

[0035] To prevent impurities from entering the photocatalytic converter housing 31, please refer to Figure 1 and Figure 4 In a preferred embodiment, the photo-oxidation catalytic mechanism 3 further includes a coarse filter 34 , and the coarse filter 34 is fixed in the photo-catalytic inlet 311 .

[0036] To facilitate the fixing of each UV lamp 33, please refer to Figure 1 and Figure 4 In a preferred embodiment, the photo-oxygen catalytic mechanism 3 further includes a fixing plate 35 , the fixing plate 35 is fixed in the photo-oxygen catalytic device housing 31 , and each of the ultraviolet lamps 33 is fixed to the fixing plate 35 .

[0037] To absorb odor from exhaust gas, please refer to Figure 1 and Figure 4 In a preferred embodiment, the photo-oxidation catalytic mechanism 3 further includes an activated carbon net 36 , and the activated carbon net 36 is fixed to the photo-catalytic outlet 312 .

[0038] To facilitate the entry of gas into the device, please refer to Figure 1 In a preferred embodiment, the photo-oxidation catalytic exhaust gas treatment device further includes an exhaust fan 5 , and the inlet of the exhaust fan 5 is connected to the photo-catalytic outlet 312 .

[0039] In order to better understand the present invention, the following Figure 1-Figure 4The working process of the photocatalytic exhaust gas treatment device provided by the utility model is described in detail: when in use, the exhaust gas containing oil smoke or dust is introduced into the air inlet of the cyclone separator 1. When the exhaust gas containing oil smoke or dust enters the cyclone separator, the gas produces a strong rotation motion. In this process, the dust or oil smoke particles in the exhaust gas are thrown to the wall of the device under the action of centrifugal force, and fall along the wall surface and are discharged from the discharge port, while the gas is discharged from the air outlet at the top. At this time, the exhausted exhaust gas still contains dust or oil smoke particles with smaller particle sizes. When the exhaust gas passes through the filtering mechanism 2, these dust or oil smoke particles with smaller particle sizes can be separated, and the separated gas enters the photocatalytic In the housing 31, the high-energy UV ultraviolet light beam emitted by the ultraviolet lamp 33 can crack the molecular bonds of bacteria in the malodorous gas and destroy the nucleic acid of bacteria. At the same time, the ultraviolet light beam decomposes the oxygen molecules in the air to produce free oxygen. Because the free oxygen is unstable, it needs to combine with oxygen molecules to produce ozone. Ozone reacts with bacteria to further kill bacteria. In addition, when the ultraviolet light beam is irradiated on the photocatalytic net 32, the photocatalyst on the photocatalytic net 32 ​​produces free radicals or active oxygen, which has a strong oxidizing ability and can convert some difficult-to-degrade organic substances into harmless or low-harm substances, thereby achieving the purpose of purifying the exhaust gas. The purified gas is discharged from the photocatalytic outlet 312. In the utility model, by arranging a cyclone separator 1 and a filter mechanism 2 at the front end of the photocatalytic mechanism 3, oil smoke or dust in the exhaust gas can be separated, preventing oil smoke or dust from directly entering the photocatalytic mechanism 3 and shortening the service life of the photocatalytic mechanism 3, thereby reducing the cost of exhaust gas treatment.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A photocatalytic exhaust gas treatment device, characterized in that: It includes a cyclone separator, a filtering mechanism and a photo-oxidation catalytic mechanism; The air inlet of the cyclone separator is used to introduce exhaust gas; The inlet of the filtering mechanism is in communication with the air outlet of the cyclone separator; The photocatalytic mechanism comprises a photocatalytic housing, a photocatalytic net and a plurality of ultraviolet lamps. The photocatalytic housing has a closed accommodating cavity. Both ends of the photocatalytic housing are respectively provided with a photocatalytic inlet and a photocatalytic outlet connected to the accommodating cavity. The photocatalytic inlet is connected to the outlet of the filtering mechanism. The photocatalytic net and the ultraviolet lamp are both fixed in the accommodating cavity. The inlet of the filter mechanism is connected to the air outlet of the cyclone separator via a second pipe; The filter mechanism comprises a filter housing and a filter frame, wherein two ends of the filter housing are respectively provided with a filter inlet and a filter outlet, wherein the filter inlet is connected to the air outlet of the cyclone separator, and the filter frame is used to encapsulate activated carbon, and the filter frame is arranged in the filter housing; A plug hole is opened on the side wall of the filter housing, and the filter frame includes a filter frame body and a side plate. The filter frame body is used to encapsulate activated carbon, and the side plate is fixed to the side of the filter frame body. The side plate is detachably connected to the filter housing and is used to cover the opening of the plug hole. A handle is fixed on the side plate.

2. The photo-oxidation catalytic exhaust gas treatment device according to claim 1, characterized in that: The photo-oxidation catalytic waste gas treatment device further comprises an air collecting hood, and an outlet of the air collecting hood is connected to an air inlet of the cyclone separator through a first pipeline.

3. The photo-oxidation catalytic exhaust gas treatment device according to claim 1, characterized in that: The side plate is connected to the filter housing via a plurality of fixing screws.

4. The photo-oxidation catalytic exhaust gas treatment device according to claim 1, characterized in that: The photo-oxidation catalytic mechanism further comprises a coarse filter, and the coarse filter is fixed in the photo-catalytic inlet.

5. The photo-oxidation catalytic exhaust gas treatment device according to claim 1, characterized in that: The photo-oxygen catalytic mechanism further comprises a fixing plate, the fixing plate is fixed in the housing of the photo-oxygen catalytic device, and each of the ultraviolet lamps is fixed to the fixing plate.

6. The photo-oxidation catalytic exhaust gas treatment device according to claim 1, characterized in that: The photo-oxidation catalytic mechanism further comprises an activated carbon net, and the activated carbon net is fixed to the photo-catalytic outlet.

7. The photo-oxidation catalytic exhaust gas treatment device according to claim 1, characterized in that: The photo-oxidation catalytic exhaust gas treatment device further comprises an exhaust fan, and an inlet of the exhaust fan is connected to the photo-catalytic outlet.