High temperature and radiation synergistically controllable novel thermal radiation catalytic reaction device and method

Abstract

The invention belongs to the field of chemical catalysis, and discloses a novel thermal radiation catalytic reaction device and method with synergic controllability of high temperature and radiation. The novel heat radiation catalytic reaction device comprises a reaction device shell, a gas pipeline, a first electric heating rod, a second electric heating rod, a heat conduction layer, a heat insulation layer, a high-temperature porous reaction layer, quartz glass and a gas premixing cavity, the invention discloses a high-temperature and radiation synergistic controllable novel thermal radiation catalytic reaction method. The method comprises the following steps: determining basic parameters; determining the target temperature of the heat radiation source; estimating a radiation intensity target value and a reaction temperature target value required by the thermal radiation catalytic reaction; calculating the diameter of the electric heating rod coated with the selective coating; debugging a reaction device according to the solved control parameters; through independent regulation and efficient cooperation of the reaction temperature and the radiation energy, activation energy required by various reactions can be reduced, efficient reactions under mild conditions can be achieved, and the universality, flexibility and efficiency of the technology are improved.

Description

Technical Field

[0001] The present application relates to a novel thermal radiation catalytic reaction device and method in which high temperature and radiation are synergistically controllable, and belongs to the field of chemical catalysis. Background Art

[0002] Thermal radiation is the phenomenon that an object emits electromagnetic waves due to its own temperature, and has obvious band characteristics. For example, the sun can be regarded as a sphere with a surface temperature of about 5770K. The energy radiated to the earth's surface can be divided into ultraviolet band (<0.38μm), visible light band (0.38~0.76μm) and infrared band (>0.76μm) according to wavelength, accounting for about 7%, 50% and 43% of the total solar radiation energy respectively. Any object with a temperature above absolute zero will continuously emit radiation energy.

[0003] Thermal catalysis is the most common catalytic technology and plays a vital role in fields such as oil processing, chemical industry and pharmaceutical industry. In a thermal catalytic system, the energy required for the reactant molecules to change from a normal state to an active state that is prone to chemical reactions is defined as activation energy, and breaking the activation energy usually requires relatively harsh reaction conditions such as high temperature and high pressure. Traditional thermal catalysis methods usually regard thermal energy as the primary driving force of the reaction, but often ignore the thermal radiation energy in a high temperature environment, which limits the reaction rate and overall energy efficiency.

[0004] According to Planck's law, when the temperature of a black body (i.e., an ideal object with both absorptivity and emissivity of 1) is below 3600K, its peak wavelength is in the infrared region, which means that the radiation energy of most thermal catalytic reactions is concentrated in the infrared band, and there are also a large number of infrared characteristic absorption peaks of gas molecules in this region. The latest research shows that when the peak radiation energy matches the infrared characteristic absorption peak of the gas reactant molecules, it can significantly enhance the gas molecules' absorption of radiation energy and excite their specific vibration modes, thereby intensifying inelastic collisions between molecules and reducing the activation energy required for the reaction, achieving the effect of reducing reaction conditions and increasing reaction rates. This type of reaction is a thermal radiation catalytic reaction.

[0005] At present, the research related to thermal radiation catalysis has just started, and there is a lack of effective reaction device design schemes and energy control strategies, which makes it difficult to achieve mild and efficient thermal radiation catalytic reactions. In view of this, the present invention proposes for the first time a new type of thermal radiation catalytic reaction device and method with coordinated control of high temperature and radiation. The activation energy required for the reaction is reduced by coordinated regulation of reaction temperature and radiation energy, thereby achieving continuous and efficient catalytic reactions and chemical production under relatively mild reaction conditions. The reaction device is suitable for most gas-phase reactions and gas-solid coupling reactions in multiple industrial fields such as energy, chemical industry, manufacturing, and environmental protection, and can be used as a better alternative to traditional thermal catalytic reaction devices. Summary of the invention

[0006] This application proposes for the first time a new type of thermal radiation catalytic reaction device and method in which high temperature and radiation are synergistically controllable. The reaction activation energy is reduced by synergistic regulation of high temperature and thermal radiation, thereby overcoming the shortcomings of traditional thermal catalytic methods, such as low reaction efficiency and harsh reaction conditions.

[0007] Technical solution 1 adopted in this application:

[0008] A novel thermal radiation catalytic reaction device with coordinated controllable high temperature and radiation, comprising a reaction device housing, a right plate of the reaction device, a left plate of the reaction device, a gas pipeline, a first electric heating rod, a second electric heating rod, a heat conducting layer, a heat insulating layer, a high temperature porous reaction layer, quartz glass, and a reaction gas premixing chamber;

[0009] The reaction gas premixing chamber comprises a column cavity and a disk cavity; the column cavity and the disk cavity of the reaction gas premixing chamber are coaxially connected; the outer wall of the column cavity of the reaction gas premixing chamber is laminated with quartz glass, the high-temperature porous reaction layer is filled with multiple pieces of annular mesh porous materials, and the high-temperature porous reaction layer is located between the quartz glass and the heat-conducting layer;

[0010] A gas product outlet is provided on the left disk of the reaction device; the gas product outlet is connected to the high-temperature porous reaction layer;

[0011] The heat-conducting layer is sleeved on the outer wall of the high-temperature porous reaction layer, and its right end is vertically arranged on the right plate of the reaction device, and the heat-conducting layer is a low-emissivity metal heat-conducting layer;

[0012] A first electric heating rod is arranged on the outer side wall of the heat conducting layer;

[0013] The heat insulation layer is filled in the shell of the reaction device and covers all components in the shell of the reaction device;

[0014] The second electric heating rod is arranged in the column cavity of the reaction gas premixing cavity;

[0015] The gas pipeline is arranged on the inner side of the reaction device shell and the left plate of the reaction device; the right end of the gas pipeline is connected to the raw gas inlet, the raw gas inlet is opened on the reaction device shell, and the left end of the gas pipeline is connected to the reaction gas premixing chamber.

[0016] Furthermore, the quartz glass is high temperature resistant quartz glass with high infrared transmittance.

[0017] Furthermore, the thermal insulation material is Al 2 O 3 Ceramic, polyurethane foam, asbestos materials.

[0018] Furthermore, the heat-conducting layer is made of stainless steel, nickel-aluminum alloy or graphene with a polished surface.

[0019] Furthermore, the substrate of the high-temperature porous reaction layer is a mesh porous material, and the catalyst required for the reaction is coated on its surface.

[0020] Furthermore, the first electric heating rod and the second electric heating rod are both made of copper, stainless steel, aluminum alloy, ceramic, or graphite.

[0021] Furthermore, the second electric heating rod is coated with a selective coating.

[0022] Technical solution 2 adopted in this application:

[0023] A novel thermal radiation catalytic reaction method with coordinated control of high temperature and radiation is implemented by using the novel thermal radiation catalytic reaction device with coordinated control of high temperature and radiation as described in technical solution 1, and comprises the following steps:

[0024] Step 1: Determine the basic parameters; according to different reactions, determine the corresponding reaction equations and clarify the activation energy E required for the reaction under common thermal catalytic systems. a , reaction temperature T r , and the infrared characteristic absorption peak λ of the main reactant gas molecules g ;

[0025] Step 2: Determine the target temperature T of the thermal radiation source e2 ; According to Wien's displacement law, a black body has a wavelength of λ m =b / T, where there is a peak of monochromatic radiation force, b is a constant, b = 2897.8K·μm; thus, the target temperature T required to be reached by the second electric heating rod coated with the selective coating is calculated. e2 =b / λ g , to achieve the matching between the thermal radiation source and the infrared characteristic absorption peaks of the reactant gas molecules;

[0026] Step 3: Estimate the target radiation intensity I required for the thermal radiation catalytic reaction r ' and the reaction temperature target value T r '; The ground state energy of reactants and products is calculated by first principles, and the transition state energy of reactant molecules at different reaction temperatures and different radiation intensities is calculated by molecular dynamics simulation, that is, the activation energy E required for thermal radiation catalysis. a '; With the minimum activation energy E a ' is the optimal value, and its corresponding radiation intensity I r ' and reaction temperature T r ' is the target value to be solved;

[0027] Step 4: According to the target temperature T of the thermal radiation source to be solved e2 And the radiation intensity target value I in the reaction area r', calculate the diameter D of the second electric heating rod coated with the selective coating; assume the length of the second electric heating rod is l, the distance from the reaction zone to the central axis of the second electric heating rod is r, the emissivity of the selective coating is ε, and the transmittance of the quartz glass is τ; according to the Stefan-Boltzmann law, through integration calculation in the range of spatial 0 < θ < 2 and length 0 < z < l, the target value I of the radiation intensity is derived. r ' The relational expression with the axial distance r:

[0028]

[0029] where σ is the Stefan-Boltzmann constant, with a value of 5.67×10 -8 W / (m 2 ·K), substitute all known quantities into the above formula, calculate and determine the diameter D of the second electric heating rod coated with the selective coating, θ is the direction angle, and z is the distance in the direction of length l;

[0030] Step Five: Debug the reaction device according to the solved control parameters; for the second electric heating rod coated with the selective coating, determine the model of the second electric heating rod according to the calculated diameter D, and set the optimal temperature it needs to reach according to the target temperature T e2 of the heat radiation source, so as to realize the regulation of the heat radiation energy; for the first electric heating rod, set its electric power according to the target value T r ' of the reaction temperature, and make dynamic adjustments according to the actual reaction rate.

[0031] This application has the following beneficial effects:

[0032] This application introduces heat radiation energy into the thermal catalytic reaction, thus forming a new reaction route mainly based on thermal radiation catalysis. Compared with the traditional thermal catalytic method, it requires less energy and milder reaction conditions, so it can achieve a higher reaction rate and a more mild and controllable reaction method under the same energy consumption.

[0033] Through the reaction device and method of this application, the independent control and parameter optimization of the reaction temperature and radiation energy (including radiation band and radiation intensity) can be realized. Furthermore, according to different reaction types and scenario requirements, the dynamic regulation and efficient coordination of the reaction temperature and radiation energy can be achieved, improving the versatility, flexibility and efficiency of technical applications. Brief Description of the Drawings

[0034] Figure 1 It is the structure of the new thermal radiation catalytic reaction device;

[0035] Figure 2 It is the schematic diagram of the new thermal radiation catalytic reaction device.

[0036] In the figure: 1. raw gas inlet, 2. gas pipeline, 3. reaction device shell, 4. thermal insulation layer, 5. first electric heating rod, 6. low emissivity metal thermal conductive layer, 7. high temperature porous reaction layer, 8. quartz glass, 9. reaction gas premixing chamber, 10. second electric heating rod, 11. gas product outlet, 12. reaction device right plate, 13. reaction device left plate. DETAILED DESCRIPTION

[0037] The present application will be described in detail below in conjunction with the accompanying drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present application. In addition, in the following description, the description of the structure and technical common knowledge is omitted to avoid unnecessary confusion of the concept of the present application.

[0038] Embodiment 1: Combination Figure 1 The present application discloses a novel heat radiation catalytic reaction device with coordinated controllable high temperature and radiation, comprising a reaction device housing 3, a reaction device right disk 12, a reaction device left disk 13, a gas pipeline 2, a first electric heating rod 5, a second electric heating rod 10, a heat conducting layer 6, a heat insulating layer 4, a high temperature porous reaction layer 7, a quartz glass 8, and a reaction gas premixing chamber 9;

[0039] The reaction gas premixing chamber 9 includes a column cavity and a disk cavity; the column cavity and the disk cavity of the reaction gas premixing chamber 9 are coaxially connected; the outer wall of the column cavity of the reaction gas premixing chamber 9 is bonded with a quartz glass 8, and the outer wall of the quartz glass 8 is provided with a high-temperature porous reaction layer 7;

[0040] A gas product outlet 11 is provided on the left disk 13 of the reaction device; the gas product outlet 11 is connected to the high-temperature porous reaction layer 7;

[0041] The heat-conducting layer 6 is sleeved on the outer wall of the high-temperature porous reaction layer 7, and its right end is vertically arranged on the right plate 12 of the reaction device. The heat-conducting layer 6 is a low-emissivity metal heat-conducting layer;

[0042] A first electric heating rod 5 is provided on the outer wall of the heat conducting layer 6;

[0043] The heat insulation layer 4 is filled in the reaction device shell 3 and covers all components in the reaction device shell 3;

[0044] The second electric heating rod 10 is arranged in the column cavity of the reaction gas premixing cavity 9;

[0045] The gas pipeline 2 is arranged on the inner side of the reaction device housing 3 and the left plate 13 of the reaction device; the right end of the gas pipeline 2 is connected to the raw gas inlet 1, which is opened on the reaction device housing 3, and the left end of the gas pipeline 2 is connected to the reaction gas premixing chamber 9.

[0046] Furthermore, the quartz glass 8 is high temperature resistant quartz glass with high infrared transmittance.

[0047] Furthermore, the thermal insulation material 4 is Al 2 O 3 High temperature resistant materials with low thermal conductivity such as ceramics, polyurethane foam, asbestos materials, etc.

[0048] Furthermore, the heat conducting layer 6 is made of stainless steel, nickel-aluminum alloy or graphene with a polished surface.

[0049] Furthermore, the substrate of the high-temperature porous reaction layer 7 is a mesh porous material, and the catalyst required for the reaction is coated on its surface.

[0050] Furthermore, the first electric heating rod 5 and the second electric heating rod 10 are both made of copper, stainless steel, aluminum alloy, ceramic, graphite, and can be combined with elements such as thermocouples to form a negative feedback control function of temperature.

[0051] Furthermore, the second electric heating rod 10 is coated with a selective coating.

[0052] Furthermore, the reaction device housing 3 is made of a temperature-resistant supporting material, preferably stainless steel.

[0053] Embodiment 2: Combination with Figure 2 The present application also discloses a novel thermal radiation catalytic reaction method in which high temperature and radiation are synergistically controllable, which is implemented by using the novel thermal radiation catalytic reaction device in which high temperature and radiation are synergistically controllable as described in Example 1, and comprises the following steps:

[0054] Step 1: Determine the basic parameters; according to the given reaction equation, determine the activation energy E required for the reaction under common thermal catalytic systems a , reaction temperature T r , and the infrared characteristic absorption peak λ of the main reactant gas molecules g Here, a gas molecule may have multiple infrared characteristic absorption peaks, and a main peak in the range of 1.5 to 9.0 μm can be selected as its infrared characteristic absorption peak λ g Generally speaking, the smaller the value, the higher the target temperature value required to be reached by the second electric heating rod coated with the selective coating, which can be combined with the reaction temperature T r Make further reasonable choices;

[0055] Step 2: Determine the target temperature T of the thermal radiation source e2 ; According to Wien's displacement law, a black body has a wavelength of λ m =b / T, where there is a peak of monochromatic radiation force, b is a constant, b=2897.8K·μm; thus, the target temperature T required to be reached by the second electric heating rod 10 coated with the selective coating is calculated.e2 = b / λ g , achieving the matching between the thermal radiation source and the infrared characteristic absorption peak of the reactant gas molecules;

[0056] Step 3. Estimate the target value I r ' of the radiation intensity required for the thermal radiation catalysis reaction and the target value T r ' of the reaction temperature; Calculate the ground state energies of the reactants and products using the first principles, and combine with molecular dynamics simulation to calculate the transition state energies of the reactant molecules at different reaction temperatures and different radiation intensities, that is, the activation energy E a ' required for the thermal radiation catalysis reaction; Take the minimum activation energy E a ' as the optimal value, and the corresponding radiation intensity I r ' and reaction temperature T r ' are the target values to be solved;

[0057] Step 4. According to the solved target temperature T e2 of the thermal radiation source and the target value I r ' of the radiation intensity in the reaction region, deduce the diameter D of the second electric heating rod 10 coated with the selective coating; Assume the length of the second electric heating rod 10 is l, the distance from the reaction region to the central axis of the second electric heating rod 10 is r, the emissivity of the selective coating is ε, and the transmittance of the quartz glass 8 is τ; According to the Stefan-Boltzmann law, through the integral calculation in the range of space 0 < θ < 2 and length 0 < z < l, deduce the correlation formula between the target value I r ' of the radiation intensity and the axial distance r:

[0058]

[0059] where σ is the Stefan-Boltzmann constant, with a value of 5.67×10 -8 W / (m 2 ·K), substitute all known quantities into the above formula, and deduce and determine the diameter D of the second electric heating rod 10 coated with the selective coating, θ is the direction angle, and z is the distance in the length l direction;

[0060] Step 5. Debug the reaction device according to the solved control parameters; For the second electric heating rod 10 coated with the selective coating, determine the model of the second electric heating rod 10 according to the calculated diameter D, and set the optimal temperature it needs to reach according to the target temperature T e2 of the thermal radiation source, so as to realize the regulation of the thermal radiation energy; For the first electric heating rod 5, set its electric power according to the target value T r ' of the reaction temperature, and make dynamic adjustments according to the actual reaction rate.

[0061] Working principle and process:

[0062] Different from the traditional thermal catalysis which is mainly controlled by thermal power, there are two clear energy conditions required to stimulate the thermal radiation catalytic reaction: one is thermal energy, which is expressed as reaction temperature and is mainly controlled by the first electric heating rod; the other is thermal radiation energy, which is expressed as radiation band and radiation intensity and is mainly controlled by the second electric heating rod coated with a selective coating. The above control parameters can all be calculated by the method provided by the present invention.

[0063] The raw gas inlet 1 can be expanded to multiple inlets according to the reaction requirements.

[0064] Gas pipeline 2 is used to achieve heat recovery and preheat the raw gas in the pipe. The material can be a metal with high thermal conductivity (such as copper). The gas pipeline is paved on the inside of the shell of the reaction device to absorb waste heat and reduce the external heat loss of the shell. In addition, the gas pipeline passes through the gas outlet channel (without affecting the outflow of product gas) to recover the high-temperature gas at the outlet and preheat the raw gas in the pipe.

[0065] The reaction device housing 3 plays a supporting and protective role and can be made of materials such as stainless steel.

[0066] Insulation layer 4, for heat preservation and insulation, can be made of Al 2 O 3 Materials such as ceramics, polyurethane foam, asbestos, etc.

[0067] The first electric heating rod 5 is used to provide a heat source and control the reaction temperature in real time. Its target value is determined by the optimal temperature required by different reaction types. The specific calculation steps will be given in the subsequent method. Metal (such as copper, stainless steel, aluminum alloy, etc.) and non-metal (such as ceramic, graphite, etc.) materials can be selected, and the negative feedback control function of the temperature can be formed by combining elements such as thermocouples.

[0068] The thermal conductive layer 6 is a low-emissivity metal thermal conductive layer, which needs to have both low emissivity and high thermal conductivity properties. A high-thermal conductive metal with a polished surface (such as stainless steel, nickel-aluminum alloy, etc.) or a graphite material (such as graphene) can be selected. Its function is to transfer the heat energy generated by the first electric heating rod 5 to the reaction area below by heat conduction, while isolating the thermal radiation generated by the first electric heating rod 5 due to high temperature and reducing the thermal radiation generated by itself.

[0069] The high-temperature porous reaction layer 7 is the main place where the thermal radiation catalytic reaction occurs, and receives the high temperature from the first electric heating rod 5 and the thermal radiation energy from the second electric heating rod 10 coated with a selective coating. The substrate is a mesh porous material, and a porous metal material or a foam ceramic with a through-hole structure can be selected, and the catalyst material required for the reaction is coated on its surface. It should be noted that the entire reaction area adopts a larger length to ensure the uniformity of the temperature field; the smaller thickness is to ensure that the radiation energy can be distributed throughout the entire area (the thermal radiation energy decays faster in the porous medium).

[0070] The quartz glass 8 is a high-temperature resistant quartz glass with high infrared transmittance. It needs to have high transmittance and high-temperature resistance to the radiation energy in the infrared band (>0.76μm). Its main function is to divide the high-temperature porous reaction layer 7 and the reaction gas premixing chamber 9, and transmit the thermal radiation energy emitted by the second electric heating rod 10 coated with the selective coating to the high-temperature porous reaction layer 7.

[0071] The reaction gas premixing chamber 9 is where the various raw material gases transported by the gas pipeline 2 are mixed and, after being preliminarily heated by the second electric heating rod 10 coated with a selective coating, are transported to the high-temperature porous reaction layer 7 to participate in the reaction.

[0072] The second electric heating rod 10 coated with a selective coating has the main function of providing thermal radiation energy, and realizes radiation band regulation by selective coating (directly changing the emissivity of each band) or adjusting the electric power (adjusting its own temperature to change the peak wavelength); the radiation intensity (energy density) regulation is realized by changing the diameter of the second electric heating rod 10. The above control parameters will be given by the calculation method proposed in the present invention according to the reaction type. The selective coating material adopts a ceramic-based material with high emissivity in the infrared band (such as cordierite, zircon sand, silica, etc.) or a high temperature resistant metal or metal oxide coating material (such as cerium oxide, zirconium oxide, yttrium oxide, etc.). The material selection of the second electric heating rod 10 refers to the first electric heating rod 5.

[0073] A water cooling pipeline may be added to the gas product outlet 11 to cool it to room temperature for easy collection; a heat recovery pipeline may also be further added to improve energy efficiency.

[0074] The above embodiments are merely illustrative of the principles and effects of the present application, and are not intended to limit the present application. Anything within the technical concept disclosed in the present application, and any simple replacement or change based on the technical solution of the present application, shall fall within the protection scope of the present application.

Claims

1. A novel thermal radiation catalytic reaction device with coordinated control of high temperature and radiation, characterized in that: It comprises a reaction device housing (3), a reaction device right disk (12), a reaction device left disk (13), a gas pipeline (2), a first electric heating rod (5), a second electric heating rod (10), a heat conducting layer (6), a heat insulating layer (4), a high-temperature porous reaction layer (7), quartz glass (8), and a reaction gas premixing chamber (9); The reaction gas premixing chamber (9) comprises a column chamber and a disk chamber; the column chamber and the disk chamber of the reaction gas premixing chamber (9) are coaxially connected; the outer wall of the column chamber of the reaction gas premixing chamber (9) is fitted with quartz glass (8); the high-temperature porous reaction layer (7) is filled with a plurality of circular ring-shaped mesh porous materials; and the high-temperature porous reaction layer (7) is located between the quartz glass (8) and the heat-conducting layer (6); A gas product outlet (11) is provided on the left disk (13) of the reaction device; the gas product outlet (11) is connected to the high-temperature porous reaction layer (7); The heat-conducting layer (6) is sleeved on the outer wall of the high-temperature porous reaction layer (7), and its right end is vertically arranged on the right plate (12) of the reaction device. The heat-conducting layer (6) is a low-emissivity metal heat-conducting layer; A first electric heating rod (5) is arranged on the outer side wall of the heat-conducting layer (6); The heat insulation layer (4) is filled in the reaction device shell (3) and covers all components in the reaction device shell (3); The second electric heating rod (10) is arranged in the column cavity of the reaction gas premixing cavity (9); The gas pipeline (2) is arranged on the inner side of the reaction device housing (3) and the left plate (13) of the reaction device; the right end of the gas pipeline (2) is connected to the raw gas inlet (1), the raw gas inlet (1) is provided on the reaction device housing (3), and the left end of the gas pipeline (2) is connected to the reaction gas premixing chamber (9).

2. The novel thermal radiation catalytic reaction device with coordinated control of high temperature and radiation according to claim 1 is characterized in that: The quartz glass (8) is high temperature resistant quartz glass with high infrared transmittance.

3. The novel thermal radiation catalytic reaction device with coordinated control of high temperature and radiation according to claim 2 is characterized in that: The heat insulating material (4) is Al2O3 ceramic, polyurethane foam, or asbestos material.

4. The novel thermal radiation catalytic reaction device with coordinated control of high temperature and radiation according to claim 3 is characterized in that: The heat conducting layer (6) is made of stainless steel, nickel-aluminum alloy or graphene with a polished surface.

5. The novel thermal radiation catalytic reaction device with coordinated control of high temperature and radiation according to claim 4 is characterized in that: The substrate of the high-temperature porous reaction layer (7) is a mesh-shaped porous material, and the catalyst required for the reaction is coated on its surface.

6. The novel thermal radiation catalytic reaction device with coordinated control of high temperature and radiation according to claim 5 is characterized in that: The first electric heating rod (5) and the second electric heating rod (10) are both made of copper, stainless steel, aluminum alloy, ceramic or graphite.

7. The novel thermal radiation catalytic reaction device with coordinated control of high temperature and radiation according to claim 6 is characterized in that: The second electric heating rod (10) is coated with a selective coating.

8. A novel thermal radiation catalytic reaction method with coordinated control of high temperature and radiation, which is implemented by the novel thermal radiation catalytic reaction device with coordinated control of high temperature and radiation as described in claims 1-7, comprising the following steps: Step 1: Determine the basic parameters; according to the given reaction equation, determine the activation energy E required for the reaction under common thermal catalytic systems a , reaction temperature T r , and the infrared characteristic absorption peak λ of the main reactant gas molecules g ; Step 2: Determine the target temperature T of the thermal radiation source e2 According to Wien's displacement law, a black body has a wavelength of λ m =b / T, where there is a peak value of monochromatic radiation force, b is a constant, b=2897.8K·μm; Thus, the target temperature T that the second electric heating rod (10) coated with the selective coating needs to reach is calculated. e2 =b / λ g , to achieve the matching between the thermal radiation source and the infrared characteristic absorption peaks of the reactant gas molecules; Step 3: Estimate the target radiation intensity I required for the thermal radiation catalytic reaction r ' and the reaction temperature target value T r '; The ground state energy of reactants and products is calculated by first principles, and the transition state energy of reactant molecules at different reaction temperatures and different radiation intensities is calculated by molecular dynamics simulation, that is, the activation energy E required for thermal radiation catalysis. a '; With the minimum activation energy E a ' is the optimal value, and its corresponding radiation intensity I r ' and reaction temperature T r ' is the target value to be solved; Step 4. Based on the target temperature T of the thermal radiation source to be solved e2 and the target value I r ' of the radiation intensity of the reaction region, calculate the diameter D of the second electric heating rod (10) coated with the selective coating; assume that the length of the second electric heating rod (10) is l, the distance from the reaction region to the central axis of the second electric heating rod (10) is r, the emissivity of the selective coating is ε, and the transmittance of the quartz glass (8) is τ; according to the Stefan-Boltzmann law, through the integration calculation in the range of space 0 < θ < 2π and length 0 < z < l, the correlation formula between the target value I r ' of the radiation intensity and the axial distance r is derived: Where σ is the Stefan-Boltzmann constant, which is 5.67×10 -8 W / (m 2 ·K), substitute all known quantities into the above formula to calculate and determine the diameter D of the second electric heating rod (10) coated with the selective coating, θ is the direction angle, and z is the distance in the direction of the length l; Step 5: debug the reaction device according to the solved control parameters; for the second electric heating rod (10) coated with the selective coating, determine the model of the second electric heating rod (10) according to the calculated diameter D, and adjust the temperature according to the target temperature T of the heat radiation source. e2 The optimal temperature to be reached is set to achieve the regulation of the thermal radiation energy; for the first electric heating rod (5), the reaction temperature target value T r 'Set its electrical power and make dynamic adjustments based on the actual reaction rate.

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