CN220573136U - Catalytic waste gas treatment device - Google Patents
Catalytic waste gas treatment device Download PDFInfo
- Publication number
- CN220573136U CN220573136U CN202322134474.2U CN202322134474U CN220573136U CN 220573136 U CN220573136 U CN 220573136U CN 202322134474 U CN202322134474 U CN 202322134474U CN 220573136 U CN220573136 U CN 220573136U
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- Prior art keywords
- treatment device
- catalytic
- pipe
- preprocessing
- communicated
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- 230000003197 catalytic effect Effects 0.000 title claims abstract description 53
- 239000002912 waste gas Substances 0.000 title claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 238000001035 drying Methods 0.000 claims abstract description 8
- 238000007781 pre-processing Methods 0.000 claims description 23
- 239000011941 photocatalyst Substances 0.000 claims description 20
- 239000007789 gas Substances 0.000 claims description 18
- 238000011049 filling Methods 0.000 claims description 15
- 238000007789 sealing Methods 0.000 claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 7
- 238000001179 sorption measurement Methods 0.000 claims description 7
- 230000001502 supplementing effect Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 11
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 239000010815 organic waste Substances 0.000 description 7
- 239000001569 carbon dioxide Substances 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 238000007084 catalytic combustion reaction Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 241000700605 Viruses Species 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000004332 deodorization Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 2
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical group O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- -1 formaldehyde, nitrogen oxides Chemical class 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 238000013032 photocatalytic reaction Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The utility model relates to the field of waste gas treatment, in particular to a catalytic waste gas treatment device, which comprises a mounting bottom plate, a catalytic treatment device and an air inlet pipe, wherein the left side of the mounting bottom plate is provided with a pretreatment device, the left side of the pretreatment device is provided with the air inlet pipe, the right side of the air inlet pipe is provided with a first air pipe, the inside of the pretreatment device is provided with a drying plate, the lower end of the drying plate is provided with a filter screen, the lower end of the filter screen is provided with cleaning liquid, the right side of the pretreatment device is provided with the first air pipe, the first air pipe is provided with an air blower, and the right side of the first air pipe is communicated with the catalytic treatment device.
Description
Technical Field
The utility model relates to the technical field of waste gas treatment, in particular to a catalytic waste gas treatment device.
Background
The organic waste gas treatment refers to the treatment work of adsorbing, filtering and purifying organic waste gas generated in the industrial production process. The organic waste gas is generally inflammable and explosive, toxic and harmful, insoluble in water, soluble in organic solvent and difficult to treat. In the process of organic waste gas treatment, various principles such as an organic waste gas activated carbon adsorption treatment method, a catalytic combustion method, a catalytic oxidation method, an acid-base neutralization method, a plasma method and the like are commonly adopted.
In the related art, the catalytic combustion method is more used, hydrocarbon in the organic waste gas is rapidly oxidized into water and carbon dioxide under the action of a catalyst, so that the aim of treatment is fulfilled, but the method consumes more fuel, has higher catalytic cost and is easy to form secondary pollution.
The above information disclosed in this background section is only for the understanding of the background of the inventive concept and, therefore, it may contain information that does not form the prior art.
Disclosure of Invention
The utility model aims to provide a catalytic waste gas treatment device, which aims to solve the problems that the catalytic combustion method proposed in the background art is more in use, hydrocarbon in organic waste gas is rapidly oxidized into water and carbon dioxide under the condition of low temperature by utilizing the catalytic combustion method under the action of a catalyst, and the treatment purpose is achieved, but the method consumes more fuel, has higher catalytic cost and is easy to form secondary pollution.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides a catalysis formula exhaust treatment device, includes mounting plate, preprocessing device, catalytic treatment device and intake pipe, the left side upper end installation of mounting plate is provided with preprocessing device, preprocessing device's left side upper end UNICOM is provided with the intake pipe, the installation is provided with the air inlet fan in the intake pipe, the right side of intake pipe and preprocessing device's inside UNICOM's setting, the right side of intake pipe is provided with first gas-supply pipe at preprocessing device internally mounted, the lower extreme and the inside lower extreme UNICOM of preprocessing device of first gas-supply pipe, preprocessing device's inside upper end installation is provided with the desiccator, the left and right sides of desiccator is through connecting block and preprocessing device's internal connection setting, the lower extreme of desiccator is provided with the filter screen at preprocessing device internally mounted, the filter screen passes through connecting block and preprocessing device's internal connection setting, the lower extreme of filter screen is provided with preprocessing device's inside packing, preprocessing device's right side upper end UNICOM is provided with the second pipe, install the trachea on the second pipe, the right side of second gas-supply pipe is provided with the catalytic treatment device.
In some embodiments, the inside of the catalytic treatment device is provided with a photocatalyst filling layer, the upper end of the catalytic treatment device and the left and right sides of the photocatalyst filling layer are provided with light sources, the light sources are ultraviolet lamps, the left and right sides of the upper end of the photocatalyst filling layer are provided with fixing blocks, and the fixing blocks are fixedly connected with the inner wall of the upper end of the catalytic treatment device.
In some embodiments, the catalytic treatment device is provided with a sealing plate at the lower end of the photocatalyst filling layer, the left side and the right side of the sealing plate are in sealing connection with the inner wall of the catalytic treatment device, and the lower end of the sealing plate is communicated with a connecting pipe.
In some embodiments, a low-temperature plasma reactor is installed at the lower end of the connecting pipe, the left side and the right side of the low-temperature plasma reactor are connected with the inner wall of the catalytic treatment device through supporting blocks, an activated carbon adsorption layer is installed at the lower end of the low-temperature plasma reactor in the catalytic treatment device, an exhaust pipe is communicated with the lower end of the right side of the catalytic treatment device, and an exhaust fan is installed on the exhaust pipe.
In some embodiments, an observation window is installed on the left side of the front end of the pretreatment device, a controller is installed on the right side of the observation window, and an access hole is installed on the front end of the catalytic treatment device.
In some embodiments, a liquid level sensor is installed at the lower end of the right side inside the pretreatment device, a liquid discharge pipe is communicated with the lower end of the left side of the pretreatment device, a stop valve is installed on the liquid discharge pipe, and a water supplementing pipe is communicated with the upper end of the liquid discharge pipe at the left side of the pretreatment device.
The beneficial effects of the utility model are as follows:
the waste gas can be dried and filtered in advance to remove moisture and particulate matters, the efficiency and the effect of subsequent treatment are improved, the photocatalysis reaction generated by the photocatalyst and the ultraviolet lamp is utilized to decompose organic matters in the waste gas into carbon dioxide and water, bacteria and viruses can be killed at the same time, the purposes of disinfection and deodorization are achieved, the wire discharge generated by the low-temperature plasma reactor is utilized to further degrade refractory matters in the waste gas, such as benzene, formaldehyde, nitrogen oxides and the like, so that the refractory matters are converted into harmless or low-harmful matters, the active carbon adsorption layer is utilized to carry out final purification on the waste gas, the residual organic matters and peculiar smell are removed, the air outlet quality is improved, and the equipment is monitored and controlled through the observation window, the controller and the liquid level sensor, so that the equipment is convenient to maintain and manage.
Drawings
FIG. 1 is a schematic diagram of a catalytic exhaust treatment device according to the present utility model;
fig. 2 is a front view of a catalytic exhaust treatment device according to the present utility model.
In the figure: the device comprises an air inlet pipe 1, a first air conveying pipe 2, a filter screen 3, a pretreatment device 4, a drying plate 5, an air conveying fan 6, a catalytic treatment device 7, a light source 8, a photocatalyst filling layer 9, a fixed block 10, a sealing plate 11, a connecting pipe 12, a supporting block 13, an air exhausting fan 14, an active carbon adsorption layer 15, a low-temperature plasma reactor 16, a liquid level sensor 17, an installation bottom plate 18, a stop valve 19, a liquid discharging pipe 20, a cleaning liquid 21, a connecting block 22, an air inlet fan 23, an observation window 24, an exhaust pipe 25, an inspection hole 26, a controller 27, a water supplementing pipe 28 and a second air conveying pipe 29.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
It should be noted that, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like refer to an azimuth or a positional relationship based on that shown in the drawings, or that the inventive product is commonly put in place when used, merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 and 2, a catalytic exhaust gas treatment device comprises a mounting base plate 18, a pretreatment device 4, a catalytic treatment device 7 and an air inlet pipe 1, wherein the pretreatment device 4 is arranged at the upper end of the left side of the mounting base plate 18, the air inlet pipe 1 is arranged at the upper end of the left side of the pretreatment device 4 in a communicated manner, an air inlet fan 23 is arranged on the air inlet pipe 1, the right side of the air inlet pipe 1 is communicated with the interior of the pretreatment device 4 in a communicated manner, a first air conveying pipe 2 is arranged at the right side of the air inlet pipe 1 in the interior of the pretreatment device 4 in a communicated manner, the lower end of the first air conveying pipe 2 is communicated with the lower end of the interior of the pretreatment device 4, a drying plate 5 is arranged at the upper end of the interior of the pretreatment device 4 in a communicated manner, the left side and the right side of the drying plate 5 are connected with the inner wall of the pretreatment device 4 through a connecting block 22, a filter screen 3 is arranged at the inner wall of the pretreatment device 4 in a connected manner, the lower end of the filter screen 3 is filled with a cleaning liquid 21 in the interior of the pretreatment device 4 in the interior, a second air conveying pipe 29 is arranged at the upper end of the right side of the pretreatment device 4 in a communicated manner, a second air conveying pipe 29 is arranged on the right side of the upper end of the pretreatment device 4 in a communicated manner, a second air conveying pipe 29 is arranged in a communicated manner, a second air conveying pipe 7 is arranged in a communicated manner, and a catalytic conveying device 7 is arranged at the right side of the air conveying pipe 29 is arranged in a communicated air conveying device 7.
In the embodiment of the present utility model, as shown in fig. 1, a photocatalyst filling layer 9 is installed in the catalytic treatment device 7, light sources 8 are installed at the upper end of the catalytic treatment device 7 and at the left and right sides of the photocatalyst filling layer 9, the light sources 8 are ultraviolet lamps, fixing blocks 10 are installed at the left and right sides of the upper end of the photocatalyst filling layer 9, the fixing blocks 10 are fixedly connected with the inner wall of the upper end of the catalytic treatment device 7, a sealing plate 11 is installed at the lower end of the photocatalyst filling layer 9 of the catalytic treatment device 7, the left and right sides of the sealing plate 11 are in sealing connection with the inner wall of the catalytic treatment device 7, a connecting pipe 12 is communicated with the lower end of the sealing plate 11, the photocatalyst is a semiconductor material capable of generating electron-hole pairs under illumination to induce oxidation reduction reaction, the conventional photocatalyst is titanium dioxide (TiO 2), zirconium dioxide (ZrO 2), zinc oxide (ZnO) or the like, and the ultraviolet lamp is an illumination device capable of providing sufficient energy to excite the photocatalyst.
In the embodiment of the utility model, as shown in fig. 1 and 2, the lower end of the connecting pipe 12 is provided with the low-temperature plasma reactor 16, the left side and the right side of the low-temperature plasma reactor 16 are connected with the inner wall of the catalytic treatment device 7 through the supporting blocks 13, the lower end of the low-temperature plasma reactor 16 is internally provided with the activated carbon adsorption layer 15, the lower right end of the catalytic treatment device 7 is communicated with the exhaust pipe 25, the exhaust pipe 25 is provided with the exhaust fan 14, the low-temperature plasma reactor 16 comprises a central electrode, an outer cylinder electrode and a medium pipe, the outer side of the central electrode is provided with the outer cylinder electrode, an air gap is arranged between the outer cylinder electrode and the central electrode, the medium pipe is wrapped and covered on the outer surface of the outer cylinder electrode, the reactor forms a coaxial cylinder structure, stable wire-shaped discharge is generated in the air gap when an external high-voltage alternating current power supply is used, and low-temperature plasma is formed, and the low-temperature plasma reactor mainly has the functions of utilizing high-energy electrons generated by the wire-shaped discharge and active particles to react with organic molecules in gas so as to decompose the organic molecules in gas into harmless or low-harmful substances.
In the embodiment of the present utility model, as shown in fig. 1 and 2, an observation window 24 is installed on the left side of the front end of the pretreatment device 4, a controller 27 is installed on the right side of the observation window 24, an access hole 26 is installed on the front end of the catalytic treatment device 7, a liquid level sensor 17 is installed on the lower end of the right side of the interior of the pretreatment device 4, a liquid discharge pipe 20 is communicated with the lower end of the left side of the pretreatment device 4, a stop valve 19 is installed on the liquid discharge pipe 20, a water supplementing pipe 28 is communicated with the upper end of the liquid discharge pipe 20 on the left side of the pretreatment device 4, and the low-temperature plasma reactor 16 is overhauled and maintained through the provided access hole 26.
In this embodiment, the exhaust gas enters the pretreatment device 4 through the air inlet pipe 1, and the air inlet fan 23 provides enough air flow pressure; the waste gas is dried and filtered in the pretreatment device 4 through the drying plate 5 and the filter screen 3 to remove moisture and particulate matters, and meanwhile, the cleaning liquid 21 is used for primarily cleaning and sterilizing the waste gas; the waste gas enters the catalytic treatment device 7 through the second gas pipe 29 and the gas transmission fan 6, a photocatalyst filling layer 9 and an ultraviolet lamp are arranged in the catalytic treatment device 7, the photocatalyst generates a photocatalytic reaction under the irradiation of the ultraviolet lamp, organic matters in the waste gas are decomposed into carbon dioxide and water, and meanwhile, bacteria and viruses can be killed, so that the purposes of disinfection and deodorization are achieved; the waste gas enters a low-temperature plasma reactor 16 through a connecting pipe 12, a central electrode, an outer cylinder electrode and a medium pipe are arranged in the low-temperature plasma reactor 16, when a high-voltage alternating current power supply is externally applied, stable wire discharge is generated in an air gap between the central electrode and the outer cylinder electrode, low-temperature plasma is formed, and the low-temperature plasma reactor 16 mainly has the function of utilizing high-energy electrons and active particles generated by the wire discharge to chemically react with organic molecules in the gas so as to decompose the organic molecules into harmless or low-harmful substances; the waste gas is finally purified through the activated carbon adsorption layer 15, so that residual organic matters and peculiar smell are removed, and the air outlet quality is improved; the exhaust gas is discharged through the exhaust pipe 25, and the exhaust fan 14 provides a sufficient exhaust pressure.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (6)
1. The utility model provides a catalytic exhaust treatment device, includes mounting plate (18), preprocessing device (4), catalytic treatment device (7) and intake pipe (1), its characterized in that: the left upper end installation of mounting plate (18) is provided with preprocessing device (4), the left upper end UNICOM of preprocessing device (4) is provided with intake pipe (1), the last installation of intake pipe (1) is provided with air inlet fan (23), the right side of intake pipe (1) is provided with preprocessing device (4) inside UNICOM, the right side of intake pipe (1) is provided with first gas-supply pipe (2) at preprocessing device (4) internally mounted, the lower extreme of first gas-supply pipe (2) and preprocessing device (4) inside lower extreme UNICOM, preprocessing device (4) inside upper end installation is provided with drying plate (5), the left and right sides of drying plate (5) are provided with filter screen (3) through connecting block (22) and preprocessing device (4) inner wall connection, filter screen (3) are provided with air-supply pipe (29) through connecting block (22) and preprocessing device (4) inner wall connection setting, preprocessing device (4) lower extreme (4) are provided with second gas-supply pipe (29) on preprocessing device (4), the right side of the second gas pipe (29) is communicated with a catalytic treatment device (7).
2. The catalytic exhaust gas treatment device according to claim 1, wherein the catalytic treatment device (7) is internally provided with a photocatalyst filling layer (9), the upper end of the photocatalyst filling layer (9) and the left and right sides of the photocatalyst filling layer (9) are provided with light sources (8), the light sources (8) are ultraviolet lamps, the left and right sides of the upper end of the photocatalyst filling layer (9) are provided with fixing blocks (10), and the fixing blocks (10) are fixedly connected with the inner wall of the upper end of the catalytic treatment device (7).
3. The catalytic exhaust gas treatment device according to claim 1, wherein the catalytic treatment device (7) is provided with a sealing plate (11) at the lower end of the photocatalyst filling layer (9), the left and right sides of the sealing plate (11) are in sealing connection with the inner wall of the catalytic treatment device (7), and the lower end of the sealing plate (11) is provided with a connecting pipe (12) in communication.
4. A catalytic waste gas treatment device according to claim 3, wherein the lower end of the connecting pipe (12) is provided with a low-temperature plasma reactor (16), the left and right sides of the low-temperature plasma reactor (16) are connected with the inner wall of the catalytic treatment device (7) through supporting blocks (13), the lower end of the low-temperature plasma reactor (16) is provided with an activated carbon adsorption layer (15) at the inner part of the catalytic treatment device (7), the lower end of the right side of the catalytic treatment device (7) is communicated with an exhaust pipe (25), and an exhaust fan (14) is arranged on the exhaust pipe (25).
5. A catalytic converter according to claim 1, wherein the left side of the front end of the pretreatment device (4) is provided with an observation window (24), the right side of the observation window (24) is provided with a controller (27), and the front end of the catalytic converter (7) is provided with an access opening (26).
6. The catalytic waste gas treatment device according to claim 1, wherein a liquid level sensor (17) is installed at the lower end of the right side inside the pretreatment device (4), a liquid discharge pipe (20) is communicated with the lower end of the left side of the pretreatment device (4), a stop valve (19) is installed on the liquid discharge pipe (20), and a water supplementing pipe (28) is communicated with the upper end of the liquid discharge pipe (20) at the left side of the pretreatment device (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322134474.2U CN220573136U (en) | 2023-08-09 | 2023-08-09 | Catalytic waste gas treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322134474.2U CN220573136U (en) | 2023-08-09 | 2023-08-09 | Catalytic waste gas treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220573136U true CN220573136U (en) | 2024-03-12 |
Family
ID=90121338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322134474.2U Active CN220573136U (en) | 2023-08-09 | 2023-08-09 | Catalytic waste gas treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220573136U (en) |
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2023
- 2023-08-09 CN CN202322134474.2U patent/CN220573136U/en active Active
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