CN220303668U - Catalytic combustion regenerating device - Google Patents
Catalytic combustion regenerating device Download PDFInfo
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- CN220303668U CN220303668U CN202322236497.4U CN202322236497U CN220303668U CN 220303668 U CN220303668 U CN 220303668U CN 202322236497 U CN202322236497 U CN 202322236497U CN 220303668 U CN220303668 U CN 220303668U
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- Prior art keywords
- desorption
- catalytic
- catalytic combustion
- carbon adsorption
- heat exchange
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- 238000007084 catalytic combustion reaction Methods 0.000 title claims abstract description 39
- 230000001172 regenerating effect Effects 0.000 title claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 80
- 238000003795 desorption Methods 0.000 claims abstract description 69
- 238000001179 sorption measurement Methods 0.000 claims abstract description 41
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 33
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 20
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 16
- 230000008929 regeneration Effects 0.000 claims abstract description 14
- 238000011069 regeneration method Methods 0.000 claims abstract description 14
- 230000005611 electricity Effects 0.000 claims abstract description 3
- 230000003197 catalytic effect Effects 0.000 claims description 47
- 238000004321 preservation Methods 0.000 claims description 9
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 8
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000011490 mineral wool Substances 0.000 claims description 4
- 229910000510 noble metal Inorganic materials 0.000 claims description 4
- 229910052763 palladium Inorganic materials 0.000 claims description 4
- 229910052697 platinum Inorganic materials 0.000 claims description 4
- 239000002912 waste gas Substances 0.000 abstract description 8
- 239000007789 gas Substances 0.000 description 19
- 239000010815 organic waste Substances 0.000 description 14
- 230000006872 improvement Effects 0.000 description 13
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 4
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001012 protector Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
The utility model relates to the technical field of waste gas treatment, and discloses a catalytic combustion regeneration device which comprises a catalytic combustion furnace and an activated carbon adsorption box, wherein the catalytic combustion furnace comprises a heat exchange chamber, a wall surface for heat exchange is vertically arranged in the heat exchange chamber, the heat exchange chamber is respectively communicated with a straight exhaust pipe and an air inlet pipe, and a flame arrester is arranged in the air inlet pipe; the air inlet pipe is connected with an activated carbon adsorption box, and a desorption heater is arranged in the activated carbon adsorption box; the active carbon adsorption case still includes desorption temperature monitor, desorption alarm and desorption controller to be equipped with the nitrogen bottle and pass through nitrogen valve and active carbon adsorption case intercommunication, desorption heater, desorption temperature monitor, desorption alarm and nitrogen valve all with desorption controller electricity is connected, in order to solve the direct intercommunication of active carbon adsorption case and catalytic combustion stove and use the problem that has the potential safety hazard.
Description
Technical Field
The utility model relates to the technical field of waste gas treatment, in particular to a catalytic combustion regeneration device.
Background
The existing organic waste gas treatment method is that waste gas passes through an active carbon adsorption box to adsorb organic components in the waste gas into micropores of active carbon, and the filtered clean gas reaches an exhaust standard and can be directly discharged to the outside; however, after the activated carbon adsorbs the organic waste gas for a certain time, the adsorption capacity of the activated carbon is saturated, and organic components in the waste gas cannot be effectively filtered, so that the filtration capacity of the activated carbon can be recovered only by desorbing and regenerating the activated carbon, and the purification cost is reduced by recycling.
The desorption process of the activated carbon is that clean air is heated to the desorption temperature of 120 ℃ and the heated air is contacted with the activated carbon, so that the adsorption capacity of the activated carbon on organic components is reduced, high-concentration organic waste gas is blown out, the organic waste gas is sent into a catalytic combustion furnace, and the organic waste gas is completely changed into harmless substances such as carbon dioxide, water and the like under the conditions of no flame and lower 280-340 ℃ by a catalyst, so that the harmful substances can be directly discharged to the outside; the reaction ensures that the chemical reaction process is not combustion of open fire, so the method is safe and reliable, and can thoroughly solve the problem of secondary pollution during desorption.
However, as the organic waste gas is decomposed in the catalytic combustion furnace, a large amount of heat is dissipated along with the emission of no harmful substances, and in order to meet the catalytic temperature condition, the heating device needs to continuously heat the gas subjected to catalytic combustion; and the ignition temperature of the activated carbon is 300 ℃ and is close to the catalytic combustion reaction temperature, and potential safety hazards exist in the direct communication use of the activated carbon adsorption box and the catalytic combustion furnace.
Disclosure of Invention
The utility model aims to provide a catalytic combustion regeneration device to solve the problem that potential safety hazards exist in the direct communication use of an activated carbon adsorption box and a catalytic combustion furnace.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the catalytic combustion regenerating device comprises a catalytic combustion furnace and an activated carbon adsorption box, wherein the catalytic combustion furnace comprises a heat exchange chamber, a wall surface for heat exchange is vertically arranged in the heat exchange chamber, the wall surface divides the heat exchange chamber into a low-temperature area and a high-temperature area, the low-temperature area is communicated with an air inlet pipe, the high-temperature area is communicated with a direct-discharge pipe, a fan is arranged in the direct-discharge pipe, a preheating chamber is communicated above the heat exchange chamber, the preheating chamber comprises a catalytic bed and a catalytic heater, and a flame arrester is arranged in the air inlet pipe;
the activated carbon adsorption box comprises a desorption inlet and a desorption outlet, the desorption outlet is connected with the air inlet pipe, a desorption branch pipe is arranged on the straight exhaust pipe and connected with the desorption inlet, and a desorption heater is arranged in the activated carbon adsorption box;
the active carbon adsorption case still includes desorption temperature monitor, desorption alarm and desorption controller to be equipped with the nitrogen cylinder and pass through nitrogen valve and active carbon adsorption case intercommunication, desorption heater, desorption temperature monitor, desorption alarm and nitrogen valve all with desorption controller electricity is connected.
The principle and the advantages of the scheme are as follows: the desorption heater heats up, desorbs high-concentration organic waste gas, the high-concentration organic waste gas enters a low-temperature area of the heat exchange chamber through the air inlet pipe under the action of the fan, then enters the preheating chamber, is heated up through the catalytic heater, reacts with the catalytic bed in a contact way, is decomposed into high-temperature carbon dioxide and water, then returns to the heat exchange chamber and enters the high-temperature area, converts heat to the low-temperature area, finally, most harmless decomposition products are discharged from the outside through the straight exhaust pipe, and the small part of harmless decomposition products are returned to the activated carbon adsorption box through the desorption branch pipe to participate in the next desorption work.
Wherein, flame arrestor in the air-supply line can prevent flame and pass through, separates the fire hidden danger of continuous catalytic combustion stove and active carbon adsorption case, avoids the active carbon adsorption case to catch fire the secondary and influences catalytic combustion stove, and utilizes desorption temperature monitor real-time supervision active carbon adsorption incasement temperature, and when the temperature was higher than the default, desorption controller control desorption alarm response to close desorption heater, simultaneously, open the nitrogen valve, make the active carbon adsorption incasement be full of nitrogen gas, avoid active carbon high temperature to catch fire.
The device rapidly increases the temperature of the desorbed waste gas through the heat exchange chamber, and reduces the energy consumption of the catalytic heater, so that the device operates with small power, and the adsorption and desorption process and the catalytic combustion process of the activated carbon are combined for use, so that the organic waste gas with large air volume and low concentration is changed into the waste gas with small air volume and high concentration for treatment. The catalytic combustion efficiency reaches more than 97%, and the standard emission is ensured. Simultaneously, the combustion heat energy of the organic waste gas is fully utilized; the automatic control alarm function and the flame arrester are arranged for the activated carbon with lower ignition point, so that potential safety hazards caused by the communication of the catalytic combustion furnace and the activated carbon adsorption box are avoided, the stable operation of the device is ensured, and secondary pollution caused by high Wen Qihuo is avoided, so that the device has the characteristics of environmental protection, high efficiency, low treatment cost, safety and the like.
As an improvement, the preheating chamber is provided with an evacuation branch pipe communicated with the straight exhaust pipe, an evacuation valve is arranged in the evacuation branch pipe, the preheating chamber further comprises a catalytic temperature monitor, a catalytic alarm and a catalytic controller, and the catalytic heater, the evacuation valve, the catalytic temperature monitor and the catalytic alarm are all electrically connected with the catalytic controller.
The beneficial effects of this improvement are: when the catalytic controller detects that the temperature is higher than the preset temperature, the catalytic alarm is started, the catalytic heater stops working, the exhaust valve is opened, high-temperature gas in the preheating chamber is rapidly exhausted through the exhaust branch pipe, the possibility of ignition and explosion caused by a high-temperature and high-pressure environment in the preheating chamber is avoided, and the overall safety of the device is improved.
As an improvement, the top of the preheating chamber is provided with a pressure relief opening, and a pressure relief diaphragm is arranged in the pressure relief opening.
As an improvement, the inner walls of the heat exchange chamber and the preheating chamber are provided with heat preservation layers, and the heat preservation layers are thick rock wool heat preservation layers.
The beneficial effects of this improvement are: the heat dissipation is reduced, the whole energy consumption is reduced, the overhigh temperature of the outer surface of the device can be avoided, meanwhile, the thick rock wool is also an insulating material, and the safety of the device is further improved.
As an improvement, an air quantity control valve is arranged between the heat exchange chamber and the fan.
The beneficial effects of this improvement are: the flow speed of the air flow in the device can be controlled, and the explosion risk caused by overlarge pressure in the device can be avoided while the organic waste gas is fully catalyzed and decomposed.
As an improvement, the straight-line pipe is communicated with the outside, and a rain cover is arranged at the pipe orifice of the straight-line pipe, which is positioned at the outside.
The beneficial effects of this improvement are: rain water is prevented from entering the device, causing circuit breaking and corrosion of internal components.
As an improvement, the flame arrester is composed of a plurality of layers of metal nets.
The beneficial effects of this improvement are: effectively preventing flame from passing through, and filtering out larger particles in the airflow.
As an improvement, the catalytic bed is a multilayer honeycomb ceramic-based carrier, and palladium and platinum noble metals are plated on the ceramic-based carrier.
The beneficial effects of this improvement are: the contact area of the catalyst and the air flow can be increased by the multi-layer honeycomb shape, so that the catalytic reaction is more sufficient, the resistance of the air flow passing through is smaller, and the air flow is smoother; the ceramic has the characteristic of high temperature resistance, avoids deformation and ignition of a carrier mechanism, and uses noble metals of palladium and platinum as catalysts, so that the purification efficiency can reach more than 97 percent, the catalysts can be reused, and the service life of a catalytic bed is longer.
Drawings
Fig. 1 is a schematic structural view of a catalytic combustion regeneration apparatus.
Detailed Description
The following is a further detailed description of the embodiments:
reference numerals in the drawings of the specification include: wall 1, low temperature zone 2, high temperature zone 3, catalytic bed 4, air inlet pipe 5, straight calandria 6, flame arrester 7, fan 8, rain cover 9, exhaust valve 10, exhaust branch pipe 11, desorption branch pipe 12, pressure relief port 13, air volume control valve 14, active carbon adsorption case 15.
Example 1
The catalytic combustion regeneration apparatus, substantially as shown in fig. 1, comprises a catalytic combustion furnace and an activated carbon adsorption tank 15.
The catalytic combustion stove includes the heat transfer room, the vertical wall 1 that is used for exchanging heat that is equipped with in the middle of the heat transfer room forms a dividing wall type heat exchanger, wall 1 is with two spaces about dividing into the heat transfer room, be low temperature zone 2 and high temperature zone 3 respectively, low temperature zone 2 intercommunication has an air-supply line 5, high temperature zone 3 intercommunication has a calandria 6, the calandria 6 intercommunication external world, the mouth of pipe department that the calandria 6 is located the external world is equipped with rain-proof cover 9, be equipped with fan 8 in the calandria 6 for form negative pressure environment in the device, draw into catalytic combustion stove from air-supply line 5 with high concentration organic waste gas, fixedly be equipped with flame arrester 7 between air-supply line 5 and the preheating chamber, this flame arrester 7 comprises multilayer metal mesh.
The upper side of the heat exchange chamber is communicated with a preheating chamber, the preheating chamber comprises a catalytic bed 4, the catalytic bed 4 is a multilayer honeycomb ceramic-based carrier, palladium and platinum noble metals are plated on the ceramic-based carrier as catalysts, the preheating chamber is provided with an evacuation branch pipe 11 communicated with the straight-line pipe 6, the evacuation branch pipe 11 is internally provided with an evacuation valve 10, the preheating chamber also comprises a catalytic heater, a catalytic temperature monitor, a catalytic alarm and a catalytic controller, and the catalytic heater, the evacuation valve 10, the catalytic temperature monitor and the catalytic alarm are all electrically connected with the catalytic controller.
The catalytic temperature monitor monitors the temperature in the preheating chamber in real time, and if the temperature in the preheating chamber does not reach the temperature condition of the catalytic reaction, the catalytic heater is started to carry out secondary temperature rise on the gas; if the temperature in the preheating chamber is greater than the preset maximum temperature in the preheating chamber, the catalytic controller stops the catalytic heater, simultaneously starts the catalytic alarm, and opens the evacuation valve 10 to discharge the gas in the preheating chamber so as to rapidly reduce the temperature and the pressure in the preheating chamber.
The active carbon adsorption box 15 comprises a desorption inlet and a desorption outlet, the desorption outlet is connected with the air inlet pipe 5, the straight exhaust pipe 6 is provided with a desorption branch pipe 12 connected with the desorption inlet, and a desorption heater is arranged in the active carbon adsorption box 15;
the activated carbon adsorption box 15 further comprises a desorption temperature monitor, a desorption alarm and a desorption controller, and is provided with a nitrogen cylinder which is communicated with the activated carbon adsorption box 15 through a nitrogen valve, and the desorption heater, the desorption temperature monitor, the desorption alarm and the nitrogen valve are all electrically connected with the desorption controller.
The desorption temperature monitor monitors the temperature in the activated carbon adsorption box 15 in real time, when activated carbon adsorption tends to a saturated state, the desorption heater is started to carry out heating desorption, if the temperature in the activated carbon adsorption box is higher than the preset highest temperature of the activated carbon adsorption box 15, the desorption controller stops the operation of the desorption heater, and simultaneously starts the desorption alarm and opens the nitrogen valve, so that nitrogen in the nitrogen cylinder enters the activated carbon adsorption box 15, the oxygen concentration is reduced, and the combustion condition is destroyed.
The top of the preheating chamber is provided with a pressure relief opening 13, a pressure relief diaphragm is arranged in the pressure relief opening 13, and when the pressure in the device is between 30 and 80Kpa, the pressure is automatically relieved, so that the equipment always operates in a safe state. The inner walls of the heat exchange chamber and the preheating chamber are provided with heat preservation layers, and the heat preservation layers adopt rock wool heat preservation layers with the thickness of 50mm, so that the temperature of the outer wall of the device does not exceed the ambient temperature by 25 ℃. An air quantity control valve 14 is arranged between the heat exchange chamber and the fan 8 to adjust the air flow quantity.
The specific implementation process is as follows:
the desorption heater heats up, high-concentration organic waste gas is desorbed from the active carbon adsorption box 15, the high-concentration organic waste gas enters the low-temperature area 2 of the heat exchange chamber through the air inlet pipe 5 under the action of the fan 8, then enters the preheating chamber to be heated up through the catalytic heater, and is in contact reaction with the catalytic bed 4, and is decomposed into high-temperature carbon dioxide and water, and then the high-temperature carbon dioxide and water are returned to the heat exchange chamber and enter the high-temperature area 3 to convert heat into the low-temperature area 2, and finally, most harmless decomposition products are discharged from the outside through the straight exhaust pipe 6, and the small part of the harmless decomposition products are returned to the active carbon adsorption box 15 through the desorption branch pipe 12 to participate in the next desorption work.
Example 2
On the basis of the embodiment 1, a metal shell is arranged outside the catalytic combustion regeneration device, a grounding screw is arranged to ground the device, the resistance between the metal shell and the grounding screw is less than or equal to 0.1 omega, and the insulation resistance in the whole catalytic combustion regeneration device is more than or equal to 2MΩ. The frequency between the live part of the device and the housing should be 50HZ and the voltage 2000V. The desorption heater and the catalytic heater can automatically control the compensation and stop according to the temperature fluctuation of the waste gas; the main circuit in the device is provided with an ultra-high temperature protector, and when the temperature exceeds a preset value, the circuit is automatically tripped and opened. The device can realize automatic control, does not need to be attended by a special person, and has small occupied area and long service life.
The foregoing is merely exemplary of the present utility model, and specific technical solutions and/or features that are well known in the art have not been described in detail herein. It should be noted that, for those skilled in the art, several variations and modifications can be made without departing from the technical solution of the present utility model, and these should also be regarded as the protection scope of the present utility model, which does not affect the effect of the implementation of the present utility model and the practical applicability of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.
Claims (8)
1. The catalytic combustion regenerating unit, including catalytic combustion stove and active carbon adsorption case, its characterized in that: the catalytic combustion furnace comprises a heat exchange chamber, wherein a wall surface for heat exchange is vertically arranged in the heat exchange chamber, the wall surface divides the heat exchange chamber into a low-temperature area and a high-temperature area, the low-temperature area is communicated with an air inlet pipe, the high-temperature area is communicated with an in-line pipe, a fan is arranged in the in-line pipe, a preheating chamber is communicated above the heat exchange chamber, a catalytic bed and a catalytic heater are arranged in the preheating chamber, and a flame arrester is arranged in the air inlet pipe;
the activated carbon adsorption box comprises a desorption inlet and a desorption outlet, the desorption outlet is connected with the air inlet pipe, a desorption branch pipe is arranged on the straight exhaust pipe and connected with the desorption inlet, and a desorption heater is arranged in the activated carbon adsorption box;
the active carbon adsorption case still includes desorption temperature monitor, desorption alarm and desorption controller to be equipped with the nitrogen cylinder and pass through nitrogen valve and active carbon adsorption case intercommunication, desorption heater, desorption temperature monitor, desorption alarm and nitrogen valve all with desorption controller electricity is connected.
2. The catalytic combustion regeneration apparatus of claim 1, wherein: the preheating chamber is provided with an evacuation branch pipe communicated with the straight exhaust pipe, an evacuation valve is arranged in the evacuation branch pipe, the preheating chamber further comprises a catalytic temperature monitor, a catalytic alarm and a catalytic controller, and the catalytic heater, the evacuation valve, the catalytic temperature monitor and the catalytic alarm are all electrically connected with the catalytic controller.
3. The catalytic combustion regeneration apparatus of claim 1, wherein: the top of the preheating chamber is provided with a pressure relief opening, and a pressure relief diaphragm is arranged in the pressure relief opening.
4. The catalytic combustion regeneration apparatus of claim 1, wherein: the inner walls of the heat exchange chamber and the preheating chamber are provided with heat preservation layers, and the heat preservation layers are thick rock wool heat preservation layers.
5. The catalytic combustion regeneration apparatus of claim 1, wherein: an air quantity control valve is arranged between the heat exchange chamber and the fan.
6. The catalytic combustion regeneration apparatus of claim 1, wherein: the direct exhaust pipe is communicated with the outside, and a rain cover is arranged at the pipe orifice of the direct exhaust pipe, which is positioned at the outside.
7. The catalytic combustion regeneration apparatus of claim 1, wherein: the flame arrester is composed of a plurality of layers of metal nets.
8. The catalytic combustion regeneration apparatus of claim 1, wherein: the catalytic bed is a multi-layer honeycomb ceramic-based carrier, and palladium and platinum noble metals are plated on the ceramic-based carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322236497.4U CN220303668U (en) | 2023-08-18 | 2023-08-18 | Catalytic combustion regenerating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322236497.4U CN220303668U (en) | 2023-08-18 | 2023-08-18 | Catalytic combustion regenerating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220303668U true CN220303668U (en) | 2024-01-05 |
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ID=89350912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322236497.4U Active CN220303668U (en) | 2023-08-18 | 2023-08-18 | Catalytic combustion regenerating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220303668U (en) |
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2023
- 2023-08-18 CN CN202322236497.4U patent/CN220303668U/en active Active
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