Efficient carbon dioxide gas decomposition device

Abstract

The invention relates to the technical field of carbon dioxide conversion, and provides an efficient carbon dioxide gas decomposition device which comprises a first pipe body, a second pipe body, a metal electrode and a carbon bed, the first pipe body and the second pipe body are both made of insulating materials, the second pipe body is arranged on the first pipe body in a sleeving mode, a gap is reserved between the outer wall of the first pipe body and the inner wall of the second pipe body, and a first air inlet and a first air outlet which are communicated with the gap are formed in the second pipe body; the second pipe body is sleeved with the metal electrode, the metal electrode is used for being connected with a high-voltage power supply and serves as a discharge positive electrode, the first pipe body is internally used for containing a circularly flowing solution, and the solution in the first pipe body serves as a grounding electrode and has a cooling effect; the carbon bed is arranged at the first gas outlet and is used for decomposing the complex gas output by the first gas outlet again. The first tube body, the second tube body, the metal electrode and the carbon bed are matched for use, carbon dioxide is decomposed twice, and the decomposition efficiency of the carbon dioxide is effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon dioxide conversion, and in particular to a high-efficiency carbon dioxide gas decomposition device. Background Art

[0002] Carbon dioxide (CO 2 ) is a special renewable resource with abundant reserves, safety, low cost and easy access. It can be used to convert CO 2 The resource utilization of carbon dioxide is to obtain high value-added energy, materials and chemical products. Therefore, the research on the activation and conversion of carbon dioxide has always been a hot topic. The related research involves various fields of modern chemical synthesis, including fine chemicals, bulk chemicals, drug development, bio-based polymers, etc. However, in the process of research, it was found that CO 2 In its chemical transformation, it often shows thermodynamic stability and kinetic relative inertness, and CO 2 The chemical conversion product structure is single and the conversion efficiency is low.

[0003] Traditional CO 2 The thermal decomposition method not only has harsh reaction conditions, but also has low energy efficiency. It is urgent to develop new technologies to improve CO 2 In recent years, a number of conversion methods have been developed, including photocatalysis, electrocatalysis, photoelectric reduction, and plasma conversion, all of which have shown good application prospects. Among them, the plasma conversion method is considered to be one of the powerful alternatives to the pyrolysis method due to its high catalytic efficiency and mild reaction conditions.

[0004] Plasma is a physical state rich in a variety of highly active species, including ions, electrons, excited atoms and molecules, free radicals, etc. These active particles can participate in a variety of chemical reactions. The high-energy particles in low-temperature plasma usually have energies of several to tens of electron volts, which is enough to overcome the activation energy of many chemical reactions. In addition, the non-equilibrium characteristics of low-temperature plasma make the electron temperature much higher than the heavy particle temperature. This non-equilibrium state can significantly promote chemical reactions and break through the limitations of thermodynamic equilibrium on the reaction path. Therefore, high-energy particles generated by gas discharge and other methods can decompose carbon dioxide into carbon monoxide and oxygen, achieve efficient conversion of carbon dioxide, and provide a new technical approach for its resource utilization.

[0005] In the related technologies of using plasma to decompose carbon dioxide, common methods to improve gas conversion efficiency include optimizing the material and morphology of high-voltage electrodes, adjusting the intake speed, controlling the reaction environment temperature, and introducing adsorption materials. These methods are mainly achieved by changing external conditions. However, these means have relatively limited effects on improving the carbon dioxide conversion efficiency. In addition, the generated oxygen usually needs to be further purified, which increases the complexity and cost of the process. Summary of the invention

[0006] The problem solved by the present invention is how to improve the efficiency of decomposing carbon dioxide.

[0007] In order to solve the above problems, the present invention provides a high-efficiency carbon dioxide gas decomposition device, comprising a first tube body, a second tube body, a metal electrode and a carbon bed;

[0008] The first tube body and the second tube body are both made of insulating material, the second tube body is sleeved on the first tube body, a sealed gap is left between the outer wall of the first tube body and the inner wall of the second tube body, and the second tube body is provided with a first air inlet and a first air outlet connected with the gap;

[0009] The metal electrode is sleeved on the second tube body, and the metal electrode is used to connect to the high-voltage power supply and serve as a discharge positive electrode. The first tube body is used to set a circulating solution, and the solution in the first tube body is used as a grounding electrode and cooling.

[0010] The carbon bed is disposed at the first gas outlet, and is used to re-decompose the gas output from the first gas outlet.

[0011] Optionally, the carbon bed includes a reaction bin, a material bin and a heating plate, the reaction bin is provided with a second air inlet and a second air outlet, the second air inlet is connected to the first air outlet, the second air outlet is used to connect to a detection device, the material bin is connected to the reaction bin, the material bin is used to store activated carbon and transport the activated carbon to the reaction bin, and the heating plate is arranged in the reaction bin.

[0012] Optionally, the silo is a funnel-shaped structure, a small opening of the funnel-shaped structure is connected to the reaction chamber, and a sealing cover plate is detachably connected to a large opening of the funnel-shaped structure.

[0013] Optionally, a plurality of heating plates are provided, and the plurality of heating plates are staggeredly arranged in the reaction chamber.

[0014] Optionally, the carbon bed further comprises a temperature control system, which is connected to the heating plate and is used to obtain and adjust the temperature of the heating plate.

[0015] Optionally, the first tube body, the second tube body and the metal electrode are coaxially arranged with each other.

[0016] Optionally, two ends of the first tube body extend out of two ends of the second tube body respectively.

[0017] Optionally, the first tube body and the second tube body are both quartz glass tubes.

[0018] Optionally, a catalyst is filled between the outer wall of the first tube body and the inner wall of the second tube body.

[0019] Optionally, the first air inlet and the first air outlet are respectively arranged at two ends of the second tube body.

[0020] The beneficial effects of the high-efficiency carbon dioxide gas decomposition device of the present invention are as follows: the first tube body and the second tube body are both made of insulating materials, the second tube body is sleeved on the first tube body, and a gap is left between the two, carbon dioxide gas can be introduced through the first air inlet provided on the second tube body and discharged from the first air outlet; a metal electrode is sleeved on the second tube body, and the metal electrode is used to connect to a high-voltage power supply and serve as a discharge positive electrode, a circulating solution is provided in the first tube body as a grounding electrode, thereby, the aqueous solution, the first tube body, the second tube body and the metal electrode form a plasma discharge region, when the high-voltage power supply is turned on and carbon dioxide gas is introduced into the gap between the first tube body and the second tube body through the first air inlet, the carbon dioxide gas is initially decomposed to form a complex gas mixed with carbon dioxide, oxygen, carbon monoxide and oxygen ions and discharged from the first air outlet, when the carbon dioxide is initially decomposed, the metal electrode is externally placed, and the low-temperature solution circulating in the first tube body is continuously cooled, which can better control the temperature of the high-efficiency carbon dioxide gas decomposition device, thereby improving the carbon dioxide conversion rate. The carbon bed is connected to the first gas outlet, and the complex gas obtained after the gas decomposition enters the carbon bed from the first gas outlet. The complex gas is decomposed again by using a catalyst (such as activated carbon) in the carbon bed, and the oxygen therein is consumed in large quantities, and the carbon monoxide content increases to form a mixed gas mainly composed of carbon dioxide and carbon monoxide, thereby effectively improving the conversion rate of carbon dioxide and reducing the complexity of the converted gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of a high-efficiency carbon dioxide gas decomposition device according to an embodiment of the present invention;

[0022] Figure 2 It is a schematic cross-sectional structure diagram of a high-efficiency carbon dioxide gas decomposition device according to an embodiment of the present invention;

[0023] Figure 3 Schematic diagram of the structure of the carbon bed and temperature control system according to an embodiment of the present invention.

[0024] Description of reference numerals:

[0025] 1-The first tube body;

[0026] 2-second tube body; 21-first air inlet; 22-first air outlet;

[0027] 3-Metal electrode;

[0028] 4-carbon bed; 41-reaction chamber; 411-second air inlet; 412-second air outlet; 42-material chamber; 421-sealing ring; 43-heating plate; 44-sealing cover; 45-temperature control system; 451-thermistor; 452-first resistor; 453-second resistor; 454-third resistor; 455-electromagnetic relay; 456-diode; 457-transistor. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. Although certain embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be interpreted as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the drawings and embodiments of the present invention are only for exemplary purposes and are not intended to limit the scope of protection of the present invention.

[0030] The term "including" and its variations used in this document are open inclusions, that is, "including but not limited to"; the term "based on" means "based at least in part on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments"; the term "optionally" means "optional embodiments". The relevant definitions of other terms will be given in the following description. It should be noted that the concepts of "first", "second", etc. mentioned in the present invention are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0031] It should be noted that the modifications of "one" and "plurality" mentioned in the present invention are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0032] like Figures 1 to 3 As shown, an efficient carbon dioxide gas decomposition device provided by an embodiment of the present invention includes a first tube body 1, a second tube body 2, a metal electrode 3 and a carbon bed 4.

[0033] The first tube body 1 and the second tube body 2 are both made of insulating material. The second tube body 2 is sleeved on the first tube body 1. A gap is left between the outer wall of the first tube body 1 and the inner wall of the second tube body 2. The second tube body 2 is provided with a first air inlet 21 and a first air outlet 22 connected to the gap.

[0034] The metal electrode 3 is sleeved on the second tube body 2, and the metal electrode 3 is used to connect to a high-voltage power supply and serve as a discharge positive electrode. The first tube body 1 is used to set a circulating solution, and the solution in the first tube body 1 is used as a grounding electrode and for cooling.

[0035] Specifically, the first tube body 1 and the second tube body 2 are both straight tubes made of insulating materials, such as glass tubes. The diameter of the second tube body 2 is larger than that of the first tube body 1. When the second tube body 2 is sleeved on the first tube body 1, there is a gap between the first tube body 1 and the second tube body 2. The end of the second tube body 2 is sealed with the outer wall of the first tube body 1, and the gap is used to pass carbon dioxide gas. The metal electrode 3 can be an iron ring, a copper ring, etc., which is sleeved on the outer wall of the second tube body 2. The first tube body 1 is a water pipe, and the two ends are respectively a water inlet and a water outlet. The water inlet and the water outlet are used for the solution (such as a sodium chloride solution of a certain concentration) to enter and exit to form a circulation flow in the first tube body to ensure that the temperature is always at a low temperature. The aqueous solution serves as a water electrode and is grounded. Thus, the aqueous solution, the first tube body 1, the second tube body 2 and the metal electrode 3 form a plasma discharge region.

[0036] When in use, a low-temperature solution of a certain concentration is passed into the first tube body 1 and grounded, the metal electrode 3 is energized, and carbon dioxide is passed into the gap between the first tube body 1 and the second tube body 2 from the first air inlet 21. The carbon dioxide gas reacts in this area to form a complex gas mixed with carbon dioxide, oxygen, carbon monoxide and oxygen ions.

[0037] The carbon bed 4 is disposed at the first gas outlet 22 , and the carbon bed 4 is used to decompose the complex gas output from the first gas outlet 22 again.

[0038] Specifically, after the carbon dioxide is decomposed once, a complex gas mixed with carbon monoxide, carbon dioxide and oxygen is obtained, and thus, the carbon bed 4 is set to decompose the complex gas again. The carbon bed 4 is connected to the first gas outlet 22, and the complex gas discharged from the first gas outlet 11 is decomposed again by the catalyst (such as activated carbon) set in the carbon bed 4, and the oxygen therein is decomposed in large quantities, the period content is greatly reduced, and the carbon monoxide content is greatly increased, so as to obtain a relatively mixed gas mainly composed of carbon dioxide and carbon monoxide, thereby reducing the complexity of the carbon dioxide decomposition gas. The gas outlet end of the carbon bed 4 can be connected to professional equipment through a rubber tube, so that the mixed gas after two decompositions can be tested by professional equipment for the components and contents of each part of the gas.

[0039] In this embodiment, the first tube body 1 and the second tube body 2 are both made of insulating materials, the second tube body 2 is sleeved on the first tube body 1, and a gap is left between the two, the carbon dioxide gas can be introduced from the first air inlet provided on the second tube body 2 and discharged from the first air outlet; the metal electrode 3 is sleeved on the second tube body 2, and the metal electrode 3 is used to connect to the high-voltage power supply and serve as a discharge positive electrode, and the first tube body 1 is used to set a circulating solution as a grounding electrode, thereby, the aqueous solution, the first tube body 1, the second tube body 2 and the metal electrode 3 form a plasma discharge area, when the high-voltage power supply is turned on and the carbon dioxide gas is introduced into the gap between the first tube body 1 and the second tube body 2 from the first air inlet, the carbon dioxide gas is initially decomposed to form a complex gas mixed with carbon dioxide, oxygen, carbon monoxide and oxygen ions and discharged from the first air outlet, when the carbon dioxide is initially decomposed, the metal electrode 3 is external, and the low-temperature solution circulating in the first tube body 1 is continuously cooled, which can better control the temperature of the high-efficiency carbon dioxide gas decomposition device, thereby improving the carbon dioxide conversion rate. The carbon bed 4 is connected to the first gas outlet 22, and the complex gas obtained after the gas decomposition enters the carbon bed 4 through the first gas outlet 22. The complex gas is decomposed again by a catalyst (such as activated carbon) in the carbon bed 4, and the oxygen therein is consumed in large quantities, and the carbon monoxide content increases to form a mixed gas mainly composed of carbon dioxide and carbon monoxide, thereby effectively improving the conversion rate of carbon dioxide and reducing the complexity of the converted gas.

[0040] Optionally, the carbon bed 4 includes a reaction bin 41, a material bin 42 and a heating plate 43, the reaction bin 41 is provided with a second air inlet 411 and a second air outlet 412, the second air inlet 411 is connected to the first air outlet 22, the second air outlet 412 is used to connect to a detection device, the material bin 42 is connected to the reaction bin 41, the material bin 42 is used to store activated carbon and transport the activated carbon to the reaction bin 41, and the heating plate 43 is arranged in the reaction bin 41.

[0041] Specifically, Figure 2 and Figure 3 As shown, in order to ensure that the carbon bed 4 can provide sufficient reaction links, reaction catalysts and reaction temperatures, a reaction bin 41, a silo 42 and a heating plate 43 are provided. The second air inlet 411 of the reaction bin 41 is connected to the first air outlet 22, and is used to introduce the complex gas after the initial decomposition of carbon dioxide. The silo 42 is used to store catalysts for carbon reactions, such as activated carbon. The activated carbon can react quickly with oxygen in the complex gas to convert oxygen into carbon monoxide. The heating plate 43 heats the reaction bin 41 to increase the temperature of the reaction bin 41 to increase the reaction rate. After the second reaction, a mixed gas containing carbon dioxide and carbon monoxide is obtained and discharged from the second air outlet 412, which can be passed into the connected detection equipment for detection, etc.

[0042] Optionally, the silo 42 is a funnel-shaped structure, a small opening of the funnel-shaped structure is in communication with the reaction silo 41 , and a sealing cover plate 44 is detachably connected to the large opening.

[0043] Specifically, Figure 3 As shown, when the carbon bed 4 is reacting the complex gas with carbon, the catalyst in the silo 42 will be consumed. In order to facilitate the timely replenishment of the catalyst, the silo 42 is set to a funnel-shaped structure. The small mouth of the funnel structure is connected to the reaction silo 41. The catalyst stored in the silo 42 enters the reaction silo below through the small mouth of the funnel structure to replenish the catalyst lost in the reaction in time. The large mouth of the funnel structure is detachably connected with a sealing cover plate 44, and the external catalyst can be taken in and replenished by opening and closing the sealing cover plate 44. It should be noted that a sealing ring 421 is provided on the inner wall of the funnel structure near the large mouth, which is used to abut against the sealing cover plate 44 to improve the sealing of the silo 42.

[0044] Alternatively, if Figure 2 As shown, there are multiple heating plates 43, and the multiple heating plates 43 are staggered in the reaction chamber 41, which can change the flow path of the complex gas, increase the reaction time of the complex gas in the reaction chamber 41, and thus improve the reaction efficiency of the complex gas, while also ensuring the temperature and temperature uniformity of the reaction chamber 41.

[0045] Optionally, the carbon bed 4 further includes a temperature control system 45 , which is connected to the heating plate 43 and is used to obtain and adjust the temperature of the heating plate 43 .

[0046] Specifically, Figure 3As shown, in order to ensure the temperature stability in the reaction chamber 41 of the carbon bed 4, a temperature control system 45 is provided to be connected to the heating plate 43 to detect the temperature in the reaction chamber 41 and adjust the temperature of the heating plate 43 based on the acquired temperature. The temperature control system 45 includes an electromagnetic relay 455, the switch end of the electromagnetic relay 455 forms a loop with the 220V power supply and the heating plate 43, one end of the electromagnet of the electromagnetic relay 455 is connected to the power supply (12V power supply), and the other end is connected to the collector of the transistor 457, the emitter of the transistor 457 is grounded, and is connected in sequence with a first resistor 452 and a thermistor 451, the other end of the thermistor 451 is connected between the 12V power supply and the electromagnet, and the thermistor 451 (PTC type) is placed in the reaction chamber 41, and a second resistor 453 is arranged between the transistor 457, the first resistor 452 and Thermistor 451, when in use, detects the temperature inside the reaction chamber 41, and the resistance of thermistor 451 increases as the temperature rises. The first resistor 452 and the second resistor 453 are ordinary resistors, which enable the temperature control system to operate normally. When the base voltage of the transistor 457 is large enough, the transistor forms a path between c and e. When the temperature inside the reaction chamber 41 is too low, the value of thermistor 451 becomes smaller, the base voltage of the transistor 457 increases, the emitter and collector of the transistor 451 are connected, and the switch of the electromagnetic relay 455 is closed to heat the heating plate 43. It should be noted that the temperature inside the reaction chamber 41 can be changed by changing the resistance of the first resistor 452.

[0047] Furthermore, the temperature control system 45 also includes a third resistor 454 and a diode 456, the cathode of the diode 456 is connected between the electromagnet of the electromagnetic relay 455 and the power supply, the cathode of the diode 456 is connected between the electromagnet of the electromagnetic relay 455 and the collector of the transistor 457, and the two ends of the third resistor 454 are respectively electrically connected to the base and emitter of the transistor 457 for protecting the circuit.

[0048] Optionally, the first tube body 1 , the second tube body 2 and the metal electrode 3 are coaxially arranged with each other.

[0049] In this embodiment, if Figure 1 and Figure 2 As shown, the first tube body 1, the second tube body 2 and the metal electrode 3 are coaxially arranged with each other, so as to ensure the uniformity of the decomposition of carbon dioxide by the plasma discharge reaction.

[0050] Optionally, two ends of the first tube body 1 extend out of two ends of the second tube body 2 respectively.

[0051] Specifically, Figure 1As shown, two ends of the first tube body 1 extend out of two ends of the second tube body 2 respectively, and the aqueous solution in the first tube body can evenly cool the plasma discharge reaction in the gap between the two tube bodies.

[0052] Optionally, the first tube body 1 and the second tube body 2 are both quartz glass tubes.

[0053] Optionally, a catalyst is filled between the outer wall of the first tube body 1 and the inner wall of the second tube body 2 .

[0054] Specifically, a catalyst is filled between the outer wall of the first tube body 1 and the inner wall of the second tube body 2. The carbon dioxide gas forms a complex gas mixed with carbon dioxide, oxygen, carbon monoxide and oxygen ions under the action of the catalyst, which forms a more complex chemical reaction under the action of plasma, further improving the carbon dioxide conversion rate.

[0055] Optionally, the first air inlet 21 and the first air outlet 22 are respectively disposed at two ends of the second tube body 2 .

[0056] Specifically, Figure 2 As shown, the first air inlet 21 and the first air outlet 22 are respectively arranged at the two ends of the second tube body 2, so that after the carbon dioxide enters the gap between the first tube body 1 and the second tube body 2 through the first air inlet 21, it has a certain flow distance in the gap, so that the carbon dioxide can be fully decomposed and then flow out through the first air outlet 22, thereby increasing the decomposition efficiency of the carbon dioxide.

[0057] In one embodiment of the present invention, the specific data of each structure are as follows:

[0058] The first tube body 1 has a length of 180 mm, a cross-sectional radius of 12 mm, and a tube wall thickness of 1 mm;

[0059] The second tube body 2 has a length of 140 mm, a cross-sectional radius of 20 mm, and a tube wall thickness of 1 mm;

[0060] When the second tube body 2 is sleeved on the first tube body 1, the second tube body 2 is located in the center of the first tube body 1, the outer surface of the first air inlet 21 is 10 mm away from the left end of the first tube body 1 and protrudes from the outer surface of the second tube body 2, the first air inlet 21 is 20 mm long and has a radius of 3 mm; the outer surface of the first air outlet 22 is 50 mm away from the right end of the first tube body 1 and protrudes from the outer surface of the second tube body 2, the first air outlet 22 is 20 mm long and has a radius of 3 mm;

[0061] The reaction chamber 41 of the carbon bed 4 is a hollow cylinder with a cross-sectional radius of 8 mm, a length of 10 mm, and a wall thickness of 1 mm;

[0062] The radius of the sealing cover plate 44 is 7 mm and matches the size of the large opening of the silo 42;

[0063] The thermistor 451 is PTC10k, the first resistor 452 is a 20kΩ resistor, the second resistor 453 and the third resistor 454 are 5kΩ resistors, the transistor 457 selects the NPN transistor SS8050, the maximum current of the electromagnetic relay 455 is about 1A, and the diode 456 selects the ordinary rectifier diode 1N4007.

[0064] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. An efficient carbon dioxide gas decomposition device, characterized in that: It comprises a first tube body (1), a second tube body (2), a metal electrode (3) and a carbon bed (4); The first tube body (1) and the second tube body (2) are both made of insulating material; the second tube body (2) is sleeved on the first tube body (1); a sealed gap is left between the outer wall of the first tube body (1) and the inner wall of the second tube body (2); and the second tube body (2) is provided with a first air inlet (21) and a first air outlet (22) which are communicated with the gap; The metal electrode (3) is sleeved on the second tube (2), and the metal electrode (3) is used to connect to a high-voltage power supply and serve as a discharge positive electrode. The first tube (1) is used to set a circulating solution, and the solution in the first tube (1) is used to serve as a grounding electrode and cooling. The carbon bed (4) is arranged at the first gas outlet (22), and the carbon bed (4) is used to re-decompose the gas output from the first gas outlet (22).

2. The high-efficiency carbon dioxide gas decomposition device according to claim 1, characterized in that: The carbon bed (4) comprises a reaction chamber (41), a material chamber (42) and a heating plate (43); the reaction chamber (41) is provided with a second air inlet (411) and a second air outlet (412); the second air inlet (411) is connected to the first air outlet (22); the second air outlet (412) is used to be connected to a detection device; the material chamber (42) is connected to the reaction chamber (41); the material chamber (42) is used to store activated carbon and transport the activated carbon to the reaction chamber (41); and the heating plate (43) is arranged in the reaction chamber (41).

3. The high-efficiency carbon dioxide gas decomposition device according to claim 2, characterized in that: The material bin (42) is a funnel-shaped structure, the small opening of the funnel-shaped structure is in communication with the reaction bin (41), and a sealing cover plate (44) is detachably connected to the large opening of the funnel-shaped structure.

4. The high-efficiency carbon dioxide gas decomposition device according to claim 2, characterized in that: A plurality of the heating plates (43) are provided, and the plurality of the heating plates (43) are staggeredly arranged in the reaction chamber (41).

5. The high-efficiency carbon dioxide gas decomposition device according to claim 2, characterized in that: The carbon bed (4) further comprises a temperature control system (45), wherein the temperature control system (45) is connected to the heating plate (43) and is used to obtain and adjust the temperature of the heating plate (43).

6. The high-efficiency carbon dioxide gas decomposition device according to claim 1, characterized in that: The first tube body (1), the second tube body (2) and the metal electrode (3) are coaxially arranged with each other.

7. The high-efficiency carbon dioxide gas decomposition device according to claim 1, characterized in that: Two ends of the first tube body (1) extend out of two ends of the second tube body (2) respectively.

8. The high-efficiency carbon dioxide gas decomposition device according to claim 1, characterized in that: The first tube body (1) and the second tube body (2) are both quartz glass tubes.

9. The high-efficiency carbon dioxide gas decomposition device according to claim 1, characterized in that: A catalyst is filled between the outer wall of the first tube (1) and the inner wall of the second tube (2).

10. The high-efficiency carbon dioxide gas decomposition device according to claim 1, characterized in that: The first air inlet (21) and the first air outlet (22) are respectively arranged at two ends of the second tube body (2).

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