An air sterilization and disinfection device and method based on microwave radiation coupling foam ceramic adsorbent material

Abstract

The present invention discloses an air sterilization and disinfection device and method based on microwave radiation coupled with a foam ceramic adsorbent material, which includes an air inlet connected to a coarse filter screen in sequence, and then connected to an air chamber through an air extractor. The air chamber is connected to a flow channel A and a flow channel B, and is respectively connected to a first waste heat recovery area and a second waste heat recovery area. A microwave treatment area is arranged between the first waste heat recovery area and the second waste heat recovery area. The microwave treatment area is provided with a microwave generating device and a foam ceramic adsorbent material. A gas commutation system is arranged in the air chamber, and an air outlet is connected to the upper part of the air chamber. Through the coupling of microwave radiation and the foam ceramic adsorbent material, it is possible to efficiently and rapidly kill air-borne viruses and pathogenic bacteria under the conditions of low pressure drop and low energy consumption. The introduction of a waste heat recovery mechanism and a humidity control mechanism can further reduce energy consumption and improve the sterilization effect. This system can be combined with the ventilation system of indoor buildings and has a wide range of application scenarios.

Description

Technical Field

[0001] The invention belongs to the field of air disinfection and sterilization, and specifically relates to an air disinfection and sterilization device and method based on microwave radiation coupled foam ceramic adsorbent material. Background Art

[0002] Virus outbreaks and epidemics pose a major threat to human life and health, and can have serious economic consequences. Viruses are usually transmitted through three pathways: droplet, contact, and airborne transmission. Traditional virus transmission research and control measures focus on droplet and contact pathways. However, more and more experimental evidence shows that airborne transmission plays a key role in the indoor transmission of some viruses. These evidences include the long-term survival of viruses in aerosols (solid or liquid particles suspended in the air, with a particle size usually less than 5um), and the fact that the pathogenic dose of viruses transmitted through aerosols is much smaller than the dose required for droplet transmission. It is precisely because of the above characteristics that it is very difficult to inhibit the airborne transmission of viruses.

[0003] Traditional methods for controlling the spread of viral aerosols mainly include ultraviolet light irradiation (UV) and high-efficiency air filters (HEPA). HEPA is an effective means of capturing microorganisms in the air. Its pores only allow air to pass through, blocking most bacteria and particles, but it is expensive, easily causes blockage in the air system, and produces a large pressure drop, and has a short service life. In addition, it can only block but cannot inactivate bacteria and viruses. Some bacteria and viruses can survive and reproduce on its filter medium. UV is another common air treatment technology that can inactivate bacteria and viruses, but UV has a shielding effect, and its sterilization effect will drop rapidly in dusty or humid environments.

[0004] In recent years, studies have shown that microwave radiation has a good killing effect on a variety of pathogens and is a new sterilization technology. Compared with air sterilization methods based on traditional heating methods, microwave radiation has the following advantages: (1) rapid heating without hysteresis effect; (2) energy saving; (3) easy operation. However, its practicality is still limited by some problems, mainly because its energy consumption is still relatively high compared to other non-heating sterilization methods. Therefore, the present invention develops a new method to kill bacteria and viruses in the air using microwaves by coupling foam ceramic adsorbent materials. Summary of the invention

[0005] In view of the above problems, the present invention provides an air sterilization and disinfection device and method based on microwave radiation coupled with foam ceramic adsorbent material. A composite material with both microwave absorption capacity and aerosol adsorption capacity is coupled with microwave heating, and supplemented with waste heat recovery design, it can achieve efficient inactivation of viruses in the air with low energy consumption cost.

[0006] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] An air sterilization and disinfection device based on a microwave radiation-coupled foam ceramic adsorbent material, comprising an air inlet, the air inlet is sequentially connected to a coarse filter and an air extractor and then communicated with an air cavity, the air cavity is communicated with a flow channel A and a flow channel B, the A port of the flow channel A and the B port of the flow channel B are respectively communicated with a first waste heat recovery area and a second waste heat recovery area, a microwave treatment area is arranged between the first waste heat recovery area and the second waste heat recovery area, a microwave generating device is arranged in the microwave treatment area, and a gas commutation system is arranged in the air cavity for controlling the flow switching of the air flow channels A and B, and an air outlet is communicated with the upper part of the air cavity.

[0008] Further, the device further comprises a control system, the control system is electrically connected to the microwave generating device, the gas commutation system and the thermocouples distributed in the air sterilization and disinfection device respectively, and is used for receiving signals and feedback control.

[0009] Further, the thermocouples include a first thermocouple at the A port, a second thermocouple between the first waste heat recovery area and the microwave treatment area, a third thermocouple between the second waste heat recovery area and the microwave treatment area, and a fourth thermocouple at the B port.

[0010] Further, foam ceramic materials are arranged in the first waste heat recovery area and the second waste heat recovery area, a foam ceramic adsorption material is arranged in the microwave treatment area, and metal meshes are arranged on both sides of the microwave treatment area.

[0011] Preferably, the foam ceramic materials are materials such as SiC, zirconia, Si3N4, ferrite, graphene, carbon fiber, activated carbon, etc. that are easy to absorb microwaves; the foam ceramic adsorption material is a composite material formed by loading materials with a high specific surface area such as molecular sieve or activated carbon or materials with antiviral activity such as titanium oxide (TiO2) and copper oxide (CuO) onto a foam ceramic matrix by methods such as hydrothermal synthesis, chemical vapor deposition, or high-temperature sintering.

[0012] Further, the microwave generating device includes a magnetron, a waveguide, and a mica sheet. The microwave generated by the magnetron enters the microwave treatment area through the waveguide and the mica sheet. The foam ceramic adsorption material absorbs the wave and heats up. The mica sheet isolates the microwave treatment area from the magnetron, and the metal mesh and the metal shell of the reaction cavity form a Faraday cage.

[0013] Further, the gas commutation system includes a plunger valve electric control device, a first plunger valve, and a second plunger valve. The plunger valve electric control device controls the first plunger valve and the second plunger valve to rise or fall to achieve the switching of the air flow direction.

[0014] Further, an air humidity control system is also provided on the air cavity, including a humidity regulator, a humidity controller, and a humidity probe.

[0015] The present invention also proposes a process method for the above air sterilization and disinfection device, specifically including the following processes: The air flow is inhaled from the air inlet under the action of the air extractor. First, it passes through a coarse filter screen to filter out larger-sized particles. Subsequently, under the feedback control of the humidity regulator, the humidity controller, and the humidity probe, the relative humidity of the air flow is maintained within a suitable range. Then, after passing through the air flow commutation system, it passes through the waste heat recovery area composed of foam ceramic materials and finally enters the microwave treatment area; through the adsorption of the foam ceramic adsorption material, the viruses in the air flow are captured on the surface of the adsorption material. At the same time, the microwave generated by the magnetron enters the cavity of the microwave treatment area through the waveguide tube and through the mica sheet. The foam ceramic adsorption material absorbs the wave and heats up, and the adsorbed viruses and the remaining viruses in the air flow are eliminated; the mica sheet isolates the cavity of the microwave treatment area from the magnetron, and the metal mesh and the metal shell form a Faraday cage to limit the microwave radiation within the microwave treatment area to prevent the microwave from diffusing to other areas and causing a decrease in the heating efficiency; the thermocouple measures the temperature of the air flow at different positions, and the control system adjusts the power of the magnetron according to the temperature signal so that the final temperature of the air flow flowing out of the microwave treatment area, that is, the measurement value of the second thermocouple or the third thermocouple, is maintained within a suitable range to achieve the purpose of efficient sterilization. At the same time, the control system also regulates the air flow direction according to the measurement values of the first thermocouple and the fourth thermocouple to control the temperature of the air flow finally flowing out of the waste heat recovery area to a lower value to achieve the energy-saving effect of waste heat recovery.

[0016] Further, the aperture size of the coarse filter screen is 4 - 6 μm; the relative humidity range of the inlet air is controlled within 65% - 75%; the aperture size of the foam ceramic material is 100 μm - 2 mm; the temperature of the air flow flowing out of the microwave treatment area in the method is between 50 - 60 °C; the final discharge temperature of the treated gas in the method is between 30 - 40 °C; the electric energy consumption for treating a unit volume of air flow is 20 - 60 J / L.

[0017] The core elements of the method of the present invention include:

[0018] 1. Open-cell foam ceramics, composed of interconnected macroscopic pores that form tortuous flow channels, can significantly enhance the heat and mass transfer effect between the air flow and the material under the condition of low pressure drop when the air flow passes through.

[0019] 2. Using materials such as silicon carbide or zirconia with significant microwave radiation absorption ability to make foam ceramics can achieve efficient absorption of microwaves, improve the energy conversion efficiency, and at the same time achieve a uniform and temperature-precisely controllable heating effect on the air flow.

[0020] 3. Materials with high specific surface area such as molecular sieves or activated carbon are loaded onto the foam ceramic material by methods such as hydrothermal synthesis or chemical vapor deposition to form a foam ceramic adsorbent. When this composite material is used for air filtration, it can effectively adsorb liquid or solid particles in the aerosol, thus achieving the effect of capturing viruses. The viruses attached to the surface of the adsorbent can be quickly killed under the dual action of microwave radiation and foam ceramic heating. This design can minimize the overall temperature rise of the air flow, thereby reducing energy consumption.

[0021] 4. Foam ceramic materials such as silicon carbide or zirconia have a relatively high specific heat capacity and can be used as a medium for gas waste heat recovery and storage. Due to the structure of the foam ceramic, it can enhance the heat transfer effect. By combining with an air flow switching device, it is possible to make full use of the waste heat of the treated air flow without changing the direction of the inlet and outlet air flows of the system, thereby reducing the average temperature rise of the air flow in the overall system and further reducing the energy consumption of the system.

[0022] 5. The air humidity regulation system controls the humidity of the air flow to be treated within a suitable range, which can significantly improve the adsorption capacity of the virus-containing aerosol and the effectiveness of the system in killing viruses.

[0023] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0024] Through the coupling of microwave radiation and the foam ceramic adsorbent material, it is possible to efficiently and quickly kill airborne viruses and pathogenic bacteria under the conditions of low pressure drop and low energy consumption. The introduction of the waste heat recovery mechanism and the humidity control mechanism can further reduce energy consumption and improve the sterilization effect. This system can be combined with the ventilation system of indoor buildings and has a wide range of application scenarios. Brief Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of the air sterilization and disinfection device based on the microwave radiation coupled foam ceramic adsorbent material of the present invention;

[0026] Figure 2 It is a diagram showing the influence of the molecular sieve loading amount and temperature on the killing of Escherichia coli in the air flow by the system in Example 2 of the present invention;

[0027] In the figure: 1. Coarse filter screen; 2. Air extractor; 3. Humidity regulator; 4. Humidity controller; 5. First plunger valve; 6. Second plunger valve; 7. Electric control device for plunger valve; 8. First waste heat recovery area; 9. First thermocouple; 10. Port A; 11. Second thermocouple; 12. Mica sheet; 13. Control system; 14. Magnetron; 15. Waveguide; 16. Metal mesh; 17. Port B; 18. Fourth thermocouple; 19. Third thermocouple; 20. Microwave treatment area; 21. Air flow outlet; 22. Humidity probe; 23. Flow channel A; 24. Flow channel B; 25. Air cavity; 26. Air flow inlet; 27. Second waste heat recovery area. Detailed implementation mode

[0028] The technical solutions of the present invention will be clearly and completely described below through embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. Embodiment 1

[0029] As Figure 1 shown, an air sterilization and disinfection device based on microwave radiation coupling foam ceramic adsorbent material includes an air flow inlet 26, the air flow inlet 26 is sequentially connected to a coarse filter screen 1 and an air extractor 2 and then communicates with an air cavity 25, the air cavity 25 communicates with a flow channel A 23 and a flow channel B 24, a port A 10 of the flow channel A 23 and a port B 17 of the flow channel B 24 are respectively communicated with a first waste heat recovery area 8 and a second waste heat recovery area 27, a microwave treatment area 20 is arranged between the first waste heat recovery area 8 and the second waste heat recovery area 27, the microwave treatment area 20 is provided with a microwave generating device, and a gas commutation system is arranged in the air cavity 25 for controlling the flow switching of the air between the flow channel A 23 and the flow channel B 24, and an air flow outlet 21 communicates with the upper part of the air cavity 25. The device further includes a control system 13, and the control system 13 is electrically connected to the microwave generating device, the gas commutation system and the thermocouples distributed in the air sterilization and disinfection device respectively for receiving signals and feedback control.

[0030] The thermocouples include a first thermocouple 9 at the port A 10, a second thermocouple 11 between the first waste heat recovery area 8 and the microwave treatment area 20, a third thermocouple 19 between the second waste heat recovery area 27 and the microwave treatment area 20, and a fourth thermocouple 18 at the port B 17.

[0031] In the first waste heat recovery area 8 and the second waste heat recovery area 27, there is foam ceramic material, and in the microwave treatment area 20, there is foam ceramic adsorption material. On both sides of the microwave treatment area 20, there are metal meshes 16. The foam ceramic material is a material that is easy to absorb microwaves, such as SiC, zirconia, Si3N4, ferrite, graphene, carbon fiber, activated carbon, etc.; the foam ceramic adsorption material is a composite material formed by loading materials with a high specific surface area, such as molecular sieve or activated carbon, or materials with antiviral activity, such as titanium oxide (TiO2) and copper oxide (CuO), onto a foam ceramic matrix through methods such as hydrothermal synthesis, chemical vapor deposition, or high-temperature sintering.

[0032] The microwave generating device includes a magnetron 14, a waveguide 15, and a mica sheet 12. The microwave generated by the magnetron 14 enters the microwave treatment area 20 through the waveguide 15 and passes through the mica sheet 12. The foam ceramic adsorption material absorbs the microwave and heats up. The mica sheet 12 isolates the microwave treatment area 20 from the magnetron 14. The metal mesh 16 and the metal shell of the reaction chamber form a Faraday cage to limit the microwave radiation within the microwave treatment area 20.

[0033] An air humidity control system is also provided on the device of the present invention, including a humidity regulator 3, a humidity controller 4, and a humidity probe 22 to control the humidity of the incoming air.

[0034] The specific working principle of the device of the present invention is as Figure 1As shown in the figure. The air flow is sucked in by the air extractor 2 through the air inlet 26. First, it passes through the coarse filter screen 1 to filter out particles of larger sizes. Subsequently, under the feedback control of the humidity regulator 3, the humidity controller 4, and the humidity probe 22, the relative humidity of the air flow is maintained within an appropriate range. Then, it passes through the air flow commutation system and enters the microwave treatment area 20 after passing through the first waste heat recovery area 8 or the second waste heat recovery area 27 composed of foam ceramic materials. In the microwave treatment area, after a treatment time of 1 - 2 s, through the adsorption of the foam ceramic adsorption material, the viruses in the air flow are captured on the surface of the adsorption material. At the same time, the microwave generated by the magnetron 14 enters the cavity through the waveguide 15 and penetrates the mica sheet 12. The foam ceramic adsorption material absorbs the wave and heats up, and the adsorbed viruses and the remaining viruses in the air flow are eliminated. The mica sheet 12 isolates the reaction cavity from the magnetron 14, and the metal mesh 16 and the metal shell of the reaction cavity form a Faraday cage, restricting the microwave radiation within the microwave treatment area to prevent the microwave from diffusing to other areas and causing a decrease in the heating efficiency. Four thermocouples measure the temperature of the air flow at different positions, and the control system 13 adjusts the power of the magnetron according to the temperature signal, so that the final temperature of the air flow flowing out of the microwave treatment area, that is, the measured value of the second thermocouple 11 or the third thermocouple 19, is maintained within an appropriate range, such as 50 - 60 °C, to achieve the purpose of efficient sterilization. At the same time, the control system 13 also regulates the air flow direction according to the measured values of the first thermocouple 9 and the fourth thermocouple 18, so that the temperature of the air flow finally flowing out of the waste heat recovery area is controlled at a lower value, such as 30 - 40 °C, to achieve the energy-saving effect of waste heat recovery.

[0035] The method for controlling the air flow direction and waste heat recovery of the present invention is illustrated as follows:

[0036] The air flow commutation is achieved by changing the positions of the first plunger valve 5 and the second plunger valve 6 through the plunger valve electric control device 7. When the first plunger valve 5 is in the upper position and the second plunger valve 6 is in the lower position, the air flow enters the microwave treatment area from the port 10 of the microwave sterilization device A and is heated to the set final temperature, and then enters the second waste heat recovery area 27 on the right side. Through heat exchange with the foam ceramic, the temperature measured by the fourth thermocouple 18 gradually increases. When the temperature at this point rises to the critical value, the control system 13 changes the positions of the two plunger valves through the plunger valve electric control device 7, that is, the first plunger valve 5 is in the lower position and the second plunger valve 6 is in the upper position, to achieve the switching of the air flow direction. At this time, the air flow will enter from the port 17 of the microwave sterilization device B and exchange heat with the second waste heat recovery area 27 on the right side, achieving the effect of preheating the intake air with the waste heat of the exhaust gas. Similarly, when the temperature of the first thermocouple 9 rises to the critical value, the air flow direction changes again, and so on. Finally, the sterilized air flow will be discharged through the air outlet 21.

[0037] In this embodiment:

[0038] The foam ceramic material is an open-cell silicon carbide (SiC) foam ceramic with 20 PPI (average pore diameter of about 1.2 mm); the foam ceramic adsorbent material is a composite material formed by loading ZSM-5 molecular sieve onto the SiC foam ceramic matrix through dip coating; the pore size of the coarse filter screen is 5 um; the relative humidity of the inlet air is controlled at 70%.

[0039] In this embodiment, the low-pathogenic H5N2 avian influenza virus contained in the air is used as the treatment object. Experiments show that the system can perform complete disinfection on an air flow with an initial virus concentration of 6×10^5 PFU / m 3 (the highest reported concentration value during avian influenza virus outbreaks), at a flow rate of 36 L / min, and the power consumption per unit volume of the treated air flow is 36 J / L. Example 2

[0040] In this embodiment, Escherichia coli contained in the air is used as the treatment object, and the others are the same as in Example 1. Experiments show that without heating and without molecular sieve loading, the SiC foam ceramic has no significant effect on the concentration of Escherichia coli in the air flow. When loaded with ZSM-5 molecular sieve at a concentration of 27 mg / mL, without heating, a 1.4 logarithmic reduction effect on Escherichia coli can be achieved. When the temperature in the treatment area is maintained at 30°C, a 2.1 logarithmic reduction effect is produced. When the molecular sieve loading concentration increases to 135 mg / mL, a 2.9 logarithmic reduction effect is produced. When the final temperature in the treatment area rises to 50°C, a 3.3 logarithmic reduction effect is achieved. The specific effects of the molecular sieve loading amount and temperature on killing Escherichia coli in the air flow by this system are as Figure 2 shown.

[0041] As described above, only the specific embodiments of the present invention are provided, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims described.

Claims

1. An air sterilization and disinfection device based on a microwave radiation-coupled foam ceramic adsorbent material, characterized in that, It includes an air inlet (26), which is sequentially connected to a coarse filter (1) and an air extractor (2), and then communicates with an air cavity (25). The air cavity (25) communicates with an A flow channel (23) and a B flow channel (24). The A port (10) of the A flow channel (23) and the B port (17) of the B flow channel (24) communicate with a first waste heat recovery area (8) and a second waste heat recovery area (27) respectively. A microwave treatment area (20) is arranged between the first waste heat recovery area (8) and the second waste heat recovery area (27). The microwave treatment area (20) is provided with a microwave generating device. A gas commutation system is arranged in the air cavity (25) to control the flow switching between the air A flow channel (23) and the B flow channel (24). An air outlet (21) communicates with the upper part of the air cavity (25). Foam ceramic materials are arranged in the first waste heat recovery area (8) and the second waste heat recovery area (27), and a foam ceramic adsorption material is arranged in the microwave treatment area (20). Metal meshes (16) are arranged on both sides of the microwave treatment area (20). The foam ceramic material is one of SiC, zirconia, Si3N4, ferrite, graphene, carbon fiber, activated carbon, etc. The foam ceramic adsorption material is a composite material formed by loading a material with a high specific surface area or a material with antiviral activity onto a foam ceramic material matrix by a hydrothermal synthesis method, a chemical vapor deposition method or a high-temperature sintering method.

2. The air sterilization and disinfection device based on a microwave radiation-coupled foam ceramic adsorbent material according to claim 1, wherein It also includes a control system (13), which is electrically connected to the microwave generating device, the gas commutation system and the thermocouples distributed in the air sterilization and disinfection device respectively for receiving signals and feedback control.

3. The air sterilization and disinfection device based on a microwave radiation-coupled foam ceramic adsorbent material according to claim 2, wherein The thermocouples include a first thermocouple (9) at the A port (10), a second thermocouple (11) between the first waste heat recovery area (8) and the microwave treatment area (20), a third thermocouple (19) between the second waste heat recovery area (27) and the microwave treatment area (20), and a fourth thermocouple (18) at the B port (17).

4. The air sterilization and disinfection device based on a microwave radiation-coupled foam ceramic adsorbent material according to claim 1, characterized in that, The microwave generating device includes a magnetron (14), a waveguide (15) and a mica sheet (12). The microwave generated by the magnetron (14) enters the microwave treatment area (20) through the waveguide (15) and the mica sheet (12). The foam ceramic adsorption material absorbs the microwave and heats up. The mica sheet (12) isolates the cavity of the microwave treatment area (20) from the magnetron (14). The metal mesh (16) and the metal shell of the reaction cavity form a Faraday cage.

5. The air sterilization and disinfection device based on a microwave radiation-coupled foam ceramic adsorbent material according to claim 1, characterized in that, The gas commutation system includes a plunger valve electric control device (7), a first plunger valve (5) and a second plunger valve (6). The plunger valve electric control device (7) controls the first plunger valve (5) and the second plunger valve (6) to rise or fall to realize the switching of the air flow direction.

6. The air sterilization and disinfection device based on a microwave radiation-coupled foam ceramic adsorbent material according to claim 1, wherein An air humidity control system is also arranged on the air cavity (25), which includes a humidity regulator (3), a humidity controller (4) and a humidity probe (22).

7. A process method of an air sterilization and disinfection device based on a microwave radiation-coupled foam ceramic adsorbent material as described in any one of claims 1-6, characterized in that, Specifically, it includes the following processes: The air flow is inhaled through the air inlet (26) under the action of the air extractor (2). First, it passes through the coarse filter screen (1) to filter out particles with larger sizes. Subsequently, under the feedback control of the humidity regulator (3), the humidity controller (4) and the humidity probe (22), the relative humidity of the air flow is maintained within a suitable range. After that, it passes through the air flow reversing system and then through the first waste heat recovery area (8) or the second waste heat recovery area (27) composed of foam ceramic materials and finally enters the microwave treatment area (20). Through the adsorption of the foam ceramic adsorbent material, the viruses in the air flow are captured on the surface of the adsorbent material. At the same time, the microwave generated by the magnetron (14) enters the cavity of the microwave treatment area through the waveguide (15) and penetrates through the mica sheet (12). The foam ceramic adsorbent material absorbs the wave and heats up, and the adsorbed viruses and the remaining viruses in the air flow are eliminated. The mica sheet (12) isolates the cavity of the microwave treatment area (20) from the magnetron (14). The metal mesh (16) and the metal shell of the reaction cavity form a Faraday cage to limit the microwave radiation within the microwave treatment area (20) and prevent the microwave from diffusing to other areas, resulting in a decrease in heating efficiency. The thermocouple measures the temperature of the air flow at different positions, and the control system (13) adjusts the power of the magnetron (14) according to the temperature signal, so that the final temperature of the air flow flowing out of the microwave treatment area (20), that is, the measured value of the second thermocouple (11) or the third thermocouple (19), is maintained within a suitable range to achieve the purpose of efficient sterilization. At the same time, the control system (13) also controls the air flow direction according to the measured values of the first thermocouple (9) and the fourth thermocouple (18), so that the temperature of the air flow finally flowing out of the waste heat recovery area is controlled at a lower value to achieve the energy-saving effect of waste heat recovery.

8. The process method of an air sterilization and disinfection device based on a microwave radiation-coupled foam ceramic adsorbent material according to claim 7, characterized in that, The pore size of the coarse filter screen (1) is 4 - 6um; the relative humidity range of the inlet air is controlled at 65% - 75%; the pore size of the foam ceramic material is 100um - 2mm; the temperature of the air flow flowing out of the microwave treatment area (20) of the method is between 50 - 60°C; the final discharge temperature of the treated gas of the method is between 30 - 40°C; the electric energy consumption for treating a unit volume of air flow is 20 - 60J / L.

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