Methane dry reforming multimode reaction system with adjustable photo-thermal coupling and decoupling

Abstract

The invention relates to the technical field of methane dry reforming, in particular to a photo-thermal coupling and decoupling adjustable methane dry reforming multi-mode reaction system which comprises a catalytic reaction cavity, a light source assembly, an electric heating assembly, a furnace body allowing gas to enter for reaction and a catalyst carrier arranged in the furnace body and used for being filled with a catalyst. Through cooperative regulation and control of the electric heating assembly and the light source assembly, flexible switching of photo-thermal coupling and decoupling in the methane dry reforming reaction is achieved. The system can operate in different modes, including photo-thermal catalysis, photo-assisted thermal catalysis, photo-induced thermal catalysis and thermal catalysis, so that an efficient and controllable experimental platform is provided for researching the synergistic effect of light and heat in reaction.

Description

Technical Field

[0001] The present invention relates to the technical field of methane dry reforming, and in particular to a methane dry reforming multi-mode reaction system with adjustable photothermal coupling and decoupling. Background Art

[0002] Methane dry reforming is an important chemical reaction used to generate hydrogen and carbon monoxide from methane and carbon dioxide, and has broad prospects for energy and industrial applications. In recent years, with the widespread application of solar energy, photothermal catalysis, as an emerging technology, is being explored for use in methane dry reforming reactions. Compared with traditional catalytic methods, photothermal catalysis utilizes the synergistic effect of solar energy and thermal energy to utilize the full spectrum of solar energy at a higher energy flux density, thereby greatly improving reaction efficiency. Photothermal catalytic methane dry reforming technology has significant advantages in improving solar energy utilization, energy conservation and emission reduction, and environmental protection, and has become a research hotspot. Optimizing the photothermal synergistic mode in methane dry reforming and specifically solving the energy-quality mismatch link are the keys to the development of photothermal catalytic technology.

[0003] However, existing technologies are unable to integrate photothermal catalysis, light-assisted thermal catalysis, photothermal catalysis and thermal catalysis modes on the same reaction platform, and are unable to achieve parallel, comparable and controllable dry reforming multi-mode reaction control studies. It is difficult to accurately analyze the specific effects of "light" and "heat" on dry reforming reactions, and it is impossible to clarify the contributions of "light" and "heat" in photothermal catalysis. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: in order to solve the problem that in the prior art, photothermal catalysis, photo-assisted thermal catalysis and thermal catalysis dry reforming reactions cannot be realized in the same system, and it is difficult to accurately analyze the specific contributions of light and heat to the dry reforming reaction, a multi-mode reaction system for methane dry reforming with adjustable photothermal coupling and decoupling and a contribution degree research method are provided.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: a multi-mode reaction system for methane dry reforming with adjustable photothermal coupling and decoupling, comprising:

[0006] The catalytic reaction chamber comprises a furnace body for gas to enter for reaction and a catalyst carrier disposed in the furnace body and used to load the catalyst;

[0007] The light source assembly includes a light source body, a lens barrel mounted on the light outlet of the light source body, a focusing lens detachably mounted on the head of the optical lens barrel, and a filter system capable of switching between different wavelengths of light;

[0008] and an electric heating assembly, which is disposed in the furnace body and is used to heat the furnace body;

[0009] When only the electric heating component is turned on, the electric heating component heats the furnace body, and this is a thermal catalytic methane dry reforming reaction; when the electric heating component is turned off and the light source body is turned on, the light is irradiated onto the catalyst through the focusing lens, and this is a photothermal catalytic methane dry reforming reaction; when the electric heating component is turned on and the focusing lens is removed, the light emitted by the light source body is irradiated onto the catalyst, and this is a light-assisted thermal catalytic methane dry reforming reaction.

[0010] Furthermore, the light source assembly also includes an optical power meter, a reflector system arranged at the light outlet of the light source body, a first lifting platform for driving the light source body to rise and fall, and a second lifting platform for driving the optical power meter to rise and fall.

[0011] Furthermore, the catalyst carrier includes a loading tube for loading the catalyst and a fixing tube connected to both sides of the loading tube and used for loading quartz wool to fix the catalyst. The axis of the loading tube is parallel to the axis of the lens barrel and the cross-sectional area of the loading tube matches the focusing light.

[0012] Furthermore, a heat conducting plate is embedded at one end of the filling tube close to the light source assembly. When the electric heating assembly is turned off and the light source body is turned on, light is irradiated onto the heat conducting plate of the catalyst carrier through the focusing lens, which is a photothermal catalytic methane dry reforming reaction.

[0013] Furthermore, the furnace body includes a hinged base and an upper card cover, and an open and close inner cavity is formed between the two. An upper ceramic layer and a lower ceramic layer are installed in the open and close inner cavity, and a heating cavity in which an electric heating component and a catalyst carrier are installed is formed between the two. A heat-conducting layer is provided between the electric heating component and the catalyst carrier, and the upper ceramic layer has a conical light channel for light to enter.

[0014] Furthermore, the reflector assembly includes a holder and a reflective sheet magnetically fixed to the holder.

[0015] Furthermore, the filter system is a filter wheel, and the filter wheel is provided with a plurality of installation stations at intervals along its circumference, and each installation station is installed with a different filter.

[0016] Furthermore, it also includes a support frame, a central control unit integrated in the support frame control cabinet, and a gas pipeline system arranged at both ends of the catalytic reaction chamber.

[0017] Furthermore, the two fixed pipes are an upper fixed pipe and a lower fixed pipe and both extend out of the furnace body. The gas pipeline system includes an air inlet pipeline connected to the upper fixed pipe, an air outlet pipeline connected to the lower fixed pipe, and a pressure sensor installed on the air outlet pipeline.

[0018] Furthermore, the support frame is also equipped with an upper lifting rail for clamping the upper fixed tube and driving it to move up and down, and a lower lifting rail for clamping the lower fixed tube and driving it to move up and down.

[0019] Beneficial effects of the present invention: The present invention utilizes electric heating components and light source components to perform photothermal coupling and decoupling of dry reforming reactions, thereby realizing photothermal, photo-assisted thermal, photothermal catalysis and thermal catalytic reaction condition selection in different modes, providing an effective platform for the synergistic effect of light and heat in methane dry reforming. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and examples.

[0021] Figure 1 A three-dimensional diagram of the present invention from a first viewing angle;

[0022] Figure 2 A three-dimensional diagram of the second viewing angle of the present invention;

[0023] Figure 3 It is a front view of the present invention;

[0024] Figure 4 It is a rear view of the present invention;

[0025] Figure 5 Schematic diagram of the structure of the light source component;

[0026] Figure 6 Schematic diagram of the structure of the catalyst carrier;

[0027] Figure 7 Schematic diagram of the structure of the catalytic reaction chamber;

[0028] In the picture:

[0029] 1-support frame; 101-fixed bracket; 102-control cabinet;

[0030] 2-Central control unit; 201-Programmable control panel; 202-Operation button group;

[0031] 3-light source assembly; 301-first lifting platform; 302-second lifting platform; 303-optical power meter; 304-light source body; 305-reflector system; 3051-card holder; 3052-reflector; 306-filter system; 3061-filter wheel; 3062-installation station; 307-lens barrel; 308-focusing lens;

[0032] 4 - catalytic reaction chamber; 401 - furnace body; 402 - catalyst carrier; 4021 - loading tube; 4022 - fixing tube; 403 - temperature measuring thermocouple; 404 - monitoring thermocouple; 405 - wire; 406 - upper lifting rail; 407 - lower lifting rail; 408 - window; 409 - upper card cover; 410 - upper ceramic layer; 411 - lower ceramic layer; 412 - base; 413 - heat conducting layer; 414 - heat conducting sheet;

[0033] 5-gas pipeline system; 501-inlet pipeline; 502-outlet pipeline; 503-pressure sensor; 504-pipeline fixture;

[0034] 6. Heating component. DETAILED DESCRIPTION

[0035] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams that illustrate the basic structure of the present invention only in a schematic manner. Therefore, they only show components relevant to the present invention, and directions and references (e.g., up, down, left, right, etc.) may be used solely to facilitate the description of features in the drawings. The following detailed description is therefore not to be taken in a limiting sense, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents.

[0036] like Figure 1-Figure 7 As shown, a multi-mode reaction system for methane dry reforming with adjustable photothermal coupling and decoupling comprises:

[0037] The catalytic reaction chamber 4 includes a furnace body 401 for gas to enter for reaction and a catalyst carrier 402 disposed in the furnace body 401 and used to load the catalyst. The furnace body 401 has a window 408 for light to enter.

[0038] The light source assembly 3 is used to provide a modulatable photothermal radiation field for the reaction, including a light source body 304, a lens barrel 307 mounted on the light outlet of the light source body 304, a focusing lens 308 detachably arranged on the head of the optical lens barrel 307, and a filtering system 306 that can switch between light of different wavelengths. The light source body 304 is a solar simulator, the focusing lens 308 is a convex lens with different focal lengths. By replacing convex lenses of different specifications, the optical requirements of different catalytic modes can be adapted. The entire replacement process does not require auxiliary tools and can ensure the accuracy of optical path alignment. The convex lens is threadedly connected to the lens barrel 307 through a retaining ring, and the convex lens group can be quickly assembled and disassembled by screwing the retaining ring.

[0039] and an electric heating component 6, which is disposed in the furnace body 401 and is used to heat the furnace body 401. The electric heating component 6 is an electric heating wire, which can achieve rapid heating from room temperature to 800°C within 30 minutes, with a temperature fluctuation of ≤±2°C;

[0040] When only the electric heating component 6 is turned on, the electric heating component 6 heats the furnace body 401. When the temperature of the furnace body 401 reaches a preset value, a mixture of methane, carbon dioxide, and nitrogen enters the furnace body 401 and reacts with the catalyst, which is a thermal catalytic methane dry reforming reaction.

[0041] When the electric heating assembly 6 is turned off and the light source body 304 is turned on, the filter system 306 provides light within the required wavelength range. The light is irradiated onto the catalyst through the focusing lens 308 to ensure the lighting conditions for the catalytic reaction. At the same time, the focused light can heat the furnace body 401. When the reaction temperature reaches the set value, the feed gas enters the catalytic reaction chamber 4 and reacts with the catalyst. At this time, it is a photothermal catalytic methane dry reforming reaction.

[0042] When the electric heating component 6 is turned on and the focusing lens 308 is removed, the light emitted by the light source body 304 is extracted into the required wavelength range by the filtering system 306 and then evenly irradiated onto the catalyst. When the reaction temperature reaches the set value, the raw gas enters the catalytic reaction chamber 4 and reacts with the catalyst. This is a light-assisted thermal catalytic methane dry reforming reaction.

[0043] In some examples, the light source assembly 3 also includes an optical power meter 303, a reflector system 305 arranged at the light outlet of the light source body 304, a first lifting platform 301 for driving the light source body 304 to rise and fall, and a second lifting platform 302 for driving the optical power meter 303 to rise and fall. The first lifting platform 301 and the second lifting platform 302 are both equipped with micron-level adjustment knobs. Through the first lifting platform 301 and the second lifting platform 302, the reaction bed layer of the catalyst carrier 402 and the optical power meter 303 can be located in the same plane.

[0044] In some examples, the catalyst carrier 402 includes a loading tube 4021 for loading the catalyst and a fixed tube 4022 connected to both sides of the loading tube 4021 and used to load quartz wool to fix the catalyst. The quartz wool in the fixed tube 4022 can effectively prevent the catalyst particles from migrating to both ends. Two fixed tubes 4022 with equal diameters are connected by a loading tube 4021 that shrinks in the middle to form a streamlined structure. The axis of the loading tube 4021 and the axis of the fixed tube 4022 intersect with each other. The axis of the loading tube 4021 is parallel to the axis of the lens barrel 307 and the cross-sectional area of the loading tube 4021 matches the focusing light spot. When the circular light spot is irradiated, the inner surface of the loading tube 4021 becomes an ideal light energy receiving surface. The light spot fully covers the catalyst surface, eliminates edge light leakage, and achieves uniform energy flux density distribution.

[0045] In some examples, a heat conducting plate 414 is embedded at one end of the filling tube 4021 close to the light source. The heat conducting plate 414 is made of SiC. Light is evenly irradiated onto the heat conducting plate 414 on the catalyst carrier 402 through the focusing lens 308, ensuring the lighting conditions for the catalytic reaction while efficiently conducting the heat generated by the light into the catalyst carrier 402 to carry out photothermal catalytic driven methane dry reforming reaction.

[0046] In some examples, the furnace body 401 includes a hinged base 412 and an upper cover 409, which enclose an open and close inner cavity. The window 408 is a quartz window, which is located on the upper cover 409. An upper ceramic layer 410 and a lower ceramic layer 411 are installed in the open and close inner cavity, and a heating cavity in which the power supply heating component 6 and the catalyst carrier 402 are installed is formed between the two. A heat-conducting layer 413 made of SiC is laid in the heating cavity. The upper ceramic layer 410 has a 45° conical light channel for light to enter, which is aligned with the optical axis of the light source component 3.

[0047] In some examples, the reflector assembly includes a holder 3051 and a reflector 3052 magnetically fixed to the holder 3051. The holder 3051 and the reflector 3052 both adopt a magnetically coupled permanent magnet array positioning structure. The holder 3051 is embedded with a neodymium iron boron magnet array arranged according to a specific polarity. A magnetic ring is provided on the back of the reflector 3052. The reflector 3052 can be quickly positioned and replaced by magnetic attraction, realizing tool-free operation.

[0048] In some examples, the filtering system 306 is a filter wheel 3061, and the filter wheel 3061 is provided with a plurality of installation stations 3062 at intervals along its circumference. Each installation station 3062 is installed with a different filter. The number of installation stations 3062 can be but is not limited to six, seven or eight, etc. By manually rotating the filter wheel 3061, the required filter can be precisely positioned at the center of the system optical path, thereby achieving fast and stable switching between different filters, and the entire switching process can be completed without the use of any auxiliary tools.

[0049] In some examples, it further includes a support frame 1, a central control unit 2 integrated into a control cabinet 102 of the support frame 1, and a gas pipeline system 5 disposed at both ends of the catalytic reaction chamber 4;

[0050] The support frame 1 constitutes the main structure of the system, and the central control unit 2 is integrated and installed in the control cabinet 102 of the support frame 1, and realizes signal interaction with the light source assembly 3 and the catalytic reaction chamber 4 through electrical connection lines; the light axially aligns with the window 408 of the catalytic reaction chamber 4 to provide a modulatable photothermal radiation field; the catalytic reaction chamber 4 is structurally coupled with the support frame 1 through a rigid connector, and its spatial position is located at the geometric center of the system.

[0051] The support frame 1 includes a fixed bracket 101 and the control cabinet 102, both of which are assembled from aluminum profiles and sheet metal. The aluminum profile is an anodized European standard 30×30mm L-shaped aluminum profile and is connected and fixed to other components by high-strength angle brackets. The sheet metal is laid on the aluminum profile, and the back sheet metal is provided with an array of heat dissipation holes with an aperture of 5-8mm and an opening ratio of ≥30%. The control cabinet 102 is located on the left side of the fixed bracket 101 and is provided with an electromagnetic shielding layer inside.

[0052] The central control unit 2 includes a circuit power module, a programmable control panel 201 and an operation button group 202; the central control unit 2 is integrated into the operation interface area of the control cabinet 102, wherein the circuit power module is built into the electrical compartment of the control cabinet 102, and is electrically connected to the programmable control panel 201 and the operation button group 202 through a shielded cable; the programmable control panel 201 and the operation button group 202 are embedded in the outer sheet metal operation surface of the control cabinet 102; the operation button group 202 includes basic system control function buttons; through the human-computer interaction interface of the programmable control panel 201 and the operation button group 202, the parameter setting, program calling, real-time pressure monitoring and temperature control functions of the reaction device can be realized.

[0053] In some examples, the two fixed tubes 4022 are respectively an upper fixed tube and a lower fixed tube and both extend out of the furnace body 401. A temperature measuring thermocouple 403 is installed on the extended section of the upper fixed tube 4022, and a monitoring thermocouple 404 is installed on the extended section of the lower fixed tube 4022. The temperature measuring thermocouple 403 and the monitoring thermocouple 404 are respectively connected to the circuit power module through a wire 405. The reaction temperature is now monitored and regulated in real time by the central control unit 2. The gas pipeline system 5 includes an air inlet pipeline 501 connected to the upper fixed tube 4022, an air inlet pipeline 502 connected to the lower fixed tube 4022, and an air inlet pipeline 503 connected to the lower fixed tube 4022. Tube 4022 connects the outlet pipe 502 of the pipe and the pressure sensor 503 installed on the outlet pipe 502. The pressure sensor 503 is used to monitor the system pressure in real time, and the inlet pipe 501 and the outlet pipe 502 are both fixed on the fixed bracket 101 through the pipe fixture 504. The inlet pipe 501 and the outlet pipe 502 are both stainless steel pipes. The inlet pipe 501 is connected to the gas supply system and can be used to introduce a mixed gas of methane, carbon dioxide and nitrogen. The product gas after the reaction is transported to the gas chromatograph through the outlet pipe 502 for analysis.

[0054] In some examples, the support frame 1 is also equipped with an upper lifting rail 406 for clamping the upper fixed tube 4022 and driving it to rise and fall, and a lower lifting rail 407 for clamping the lower fixed tube 4022 and driving it to rise and fall. The upper lifting rail 406 and the lower lifting rail 407 can achieve precise fixation of the position of the catalyst carrier 402.

[0055] Working principle:

[0056] Thermal catalysis drives the methane dry reforming reaction: In thermal catalytic mode, the light source 304 is turned off, the program is set via the programmable control panel 201 of the central control unit 2, and the spiral heating wire is activated via the operation button group 202 to heat the furnace body 401. To ensure uniform temperature in the reaction zone, a thermally conductive layer 413 is laid around the catalyst carrier 402. Real-time temperature monitoring is performed by temperature-measuring thermocouples 403 and monitoring thermocouples 404. When the temperature of the furnace body 401 reaches the preset value, a mixture of methane, carbon dioxide, and nitrogen enters the catalyst carrier 402 through the inlet pipe 501 and reacts with the catalyst. The generated gas then enters the chromatograph through the outlet pipe 502 for analysis.

[0057] Photothermal catalysis drives methane dry reforming reaction: In the photothermal catalytic mode, first turn off the thermal catalytic mode, and start the light source body 304 by operating the button group 202, adjust the first lifting platform 301 and the second lifting platform 302, and ensure that the light outlet of the light source, the reaction bed of the catalyst carrier 402 and the optical power meter 303 are located in the same plane. According to the reaction requirements, adjust the reflector 3052 and the filter system 306 in the reflector assembly to provide light in the required wavelength range. The light is evenly irradiated onto the catalyst carrier 402 bed through the focusing lens 308 to ensure the lighting conditions for the catalytic reaction. The temperature is continuously monitored by the temperature measuring thermocouple 403. When the reaction temperature reaches the set value, the raw gas enters the catalytic reaction chamber 4 and reacts with the catalyst. The generated gas enters the chromatograph through the outlet pipe 502 for detection.

[0058] Photothermal catalytic methane dry reforming reaction: In photothermal catalytic mode, first turn off the thermal catalytic mode and activate the light source body 304 using the operating button assembly 202. A heat conducting plate 414 is embedded on the surface of the loading tube 4021 on the catalyst carrier 402. The first and second lifting platforms 301, 302 are adjusted to ensure that the light source's light outlet, the catalyst carrier 402 bed, and the optical power meter 303 are in the same plane. Based on the reaction requirements, the reflector 3052 and filter system 306 in the reflector assembly are adjusted to provide illumination within the required wavelength range. Light is evenly illuminated by the focusing lens 308 onto the heat conducting plate 414 on the catalyst carrier 402, ensuring the optimal illumination conditions for the catalytic reaction. The temperature is continuously monitored by the thermocouple 403. When the reaction temperature reaches the set value, the feed gas enters the catalytic reaction chamber 4, reacts with the catalyst, and the generated gas is transported through the outlet pipe 502 to the chromatograph for detection.

[0059] Light-assisted thermal catalysis drives the methane dry reforming reaction: In the light-assisted thermal catalysis mode, the reaction program is set through the programmable control panel 201 of the central control unit 2, and the electric heating wire is activated to heat the furnace body 401 through the operation button group 202. Subsequently, the light source body 304 is activated, and the light source is precisely positioned by adjusting the first lifting platform 301 and the second lifting platform 302 so that the light source outlet, the reaction bed and the optical power meter 303 are aligned in the same plane. The focusing lens 308 group is removed so that the light is evenly distributed and irradiated onto the catalyst carrier 402 bed. Temperature control is completed by the temperature measuring thermocouple 403 and the monitoring thermocouple 404. When the temperature stabilizes and reaches the set value, the raw gas enters the reaction system, and the gas generated by the catalytic reaction enters the chromatograph through the outlet pipe 502 for analysis.

[0060] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A multi-mode reaction system for methane dry reforming with adjustable photothermal coupling and decoupling, characterized by: include: The catalytic reaction chamber (4) comprises a furnace body (401) for gas to enter for reaction and a catalyst carrier (402) disposed in the furnace body (401) and used for loading the catalyst; A light source assembly (3) comprises a light source body (304), a lens barrel (307) sleeved on a light outlet of the light source body (304), a focusing lens (308) detachably arranged on the head of the optical lens barrel (307), and a filter system (306) capable of switching between light beams of different wavelengths; and an electric heating component (6), which is arranged in the furnace body (401) and is used to heat the furnace body (401); When only the electric heating component (6) is turned on, the electric heating component (6) heats the furnace body (401), and this is a thermal catalytic methane dry reforming reaction; when the electric heating component (6) is turned off and the light source body (304) is turned on, the light is irradiated onto the catalyst through the focusing lens (308), and this is a photothermal catalytic methane dry reforming reaction; when the electric heating component (6) is turned on and the focusing lens (308) is removed, the light emitted by the light source body (304) is evenly irradiated onto the catalyst, and this is a light-assisted thermal catalytic methane dry reforming reaction.

2. The multi-mode reaction system for methane dry reforming with adjustable photothermal coupling and decoupling according to claim 1, characterized in that: The light source assembly (3) further comprises an optical power meter (303), a reflector system (305) arranged at a light outlet of the light source body (304), a first lifting platform (301) for driving the light source body (304) to rise and fall, and a second lifting platform (302) for driving the optical power meter (303) to rise and fall.

3. The multi-mode reaction system for methane dry reforming with adjustable photothermal coupling and decoupling according to claim 1 is characterized in that: The catalyst carrier (402) includes a loading tube (4021) for loading the catalyst and a fixing tube (4022) connected to both sides of the loading tube (4021) and used for loading quartz wool to fix the catalyst. The axis of the loading tube (4021) is parallel to the axis of the lens barrel (307) and the cross-sectional area of the loading tube (4021) matches the focusing light.

4. The multi-mode reaction system for methane dry reforming with adjustable photothermal coupling and decoupling according to claim 3, characterized in that: A heat conducting plate (414) is embedded in one end of the filling tube (4021) close to the light source assembly (3). When the electric heating assembly (6) is turned off and the light source body (304) is turned on, light is irradiated onto the heat conducting plate (414) of the catalyst carrier (402) through the focusing lens (308), and at this time, a photothermal catalytic methane dry reforming reaction occurs.

5. The multi-mode reaction system for methane dry reforming with adjustable photothermal coupling and decoupling according to claim 1, characterized in that: The furnace body (401) includes a hinged base (412) and an upper cover (409), an open and close inner cavity is formed between the two, an upper ceramic layer (410) and a lower ceramic layer (411) are installed in the open and close inner cavity, and a heating cavity in which a power supply heating component (6) and a catalyst carrier (402) are installed is formed between the two, and a heat conductive layer (415) is provided between the power supply heating component (6) and the catalyst carrier (402), and a conical light channel is provided in the upper ceramic layer (410) for light to enter.

6. The multi-mode reaction system for methane dry reforming with adjustable photothermal coupling and decoupling according to claim 2, characterized in that: The reflector system (305) comprises a card seat (3051) and a reflector (3052) fixed to the card seat (3051) by magnetic attraction.

7. The multi-mode reaction system for methane dry reforming with adjustable photothermal coupling and decoupling according to claim 1, characterized in that: The filter system (306) is a filter wheel (3061), and the filter wheel (3061) is provided with a plurality of installation stations (3062) spaced apart along its circumference, and each installation station (3062) is installed with a different filter.

8. The multi-mode reaction system for methane dry reforming with adjustable photothermal coupling and decoupling according to claim 1, characterized in that: It also includes a support frame (1), a central control unit (2) integrated in a control cabinet (102) of the support frame (1), and a gas pipeline system (5) arranged at both ends of the catalytic reaction chamber (4).

9. The multi-mode reaction system for methane dry reforming with adjustable photothermal coupling and decoupling according to claim 8, characterized in that: The two fixed pipes (4022) are an upper fixed pipe and a lower fixed pipe, and both extend out of the furnace body (401). The gas pipeline system (5) includes an air inlet pipeline (501) connected to the upper fixed pipe (4022), an air outlet pipeline (501) connected to the lower fixed pipe (4022), and a pressure sensor (503) installed on the air outlet pipeline (501).

10. The multi-mode reaction system for methane dry reforming with adjustable photothermal coupling and decoupling according to claim 8, characterized in that: The support frame (1) is also provided with an upper lifting rail (406) for clamping the upper fixed tube (4022) and driving it to move up and down, and a lower lifting rail (407) for clamping the lower fixed tube (4022) and driving it to move up and down.

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