A device for high-energy microwave degradation of VOCs organic waste gas with different concentrations

Abstract

The present invention discloses a device for high-energy microwave degradation of VOCs organic waste gas of different concentrations. The outer shell is installed inside a compartment-type integrated skid through a structural frame. The inner shell is arranged inside the outer shell. The inner shell cavity is divided into three sealed annular cavities by two mutually connected separation sleeves. The three annular cavities are respectively a low-temperature chamber, a medium-high-temperature chamber and a high-temperature chamber from the outside to the inside. Catalytic carriers are arranged in the three chambers. An inlet and outlet gas switching device can connect the inlet pipe and the outlet pipe to the corresponding chamber according to the gas concentration detected by the concentration component detection system. The device also includes a microwave generator assembly and a microwave switching device. The present invention transmits microwave energy to different chambers in a more concentrated manner by arranging multiple levels of inner cavities in the microwave cavity, and treats the waste gas through the physical and chemical effects generated by different carriers. The device is applicable to various complex working conditions and waste gas of different concentrations. It has strong operability and obvious cost advantages, and improves the overall efficiency of high-energy microwave degradation of VOCs organic waste gas of different concentrations.

Description

Technical Field

[0001] The present invention relates to the field of environmental protection technology, in particular to a device for degrading VOCs organic waste gases with different concentrations using high-energy microwaves. Background Art

[0002] Currently, VOC waste gas treatment methods are categorized by concentration: medium- and low-concentration treatment technologies, and high-concentration treatment technologies. These technologies primarily include photocatalytic oxidation (including microwave- and low-temperature photocatalytic oxidation), biological methods, plasma treatment, and activated carbon. RTO (high-temperature direct combustion) and RCO (high-temperature catalytic combustion) are primarily used to treat high-concentration VOC waste gas with large air volumes. However, in actual production operations, waste gas concentrations fluctuate significantly. Using medium- and low-concentration treatment technologies can lead to low treatment efficiency and potential safety hazards at higher concentrations. Using high-concentration technologies, at lower concentrations, the waste gas needs to be converted to a lower-volume, higher-concentration waste gas for easier treatment, resulting in complex processes and high investment. Currently, to address varying waste gas concentrations, a combination of different processes and equipment is primarily employed. These treatment methods have limitations in terms of scope and application. Few single-technique processes or equipment are suitable for varying VOC waste gas concentrations.

[0003] In summary, there is an urgent need to design a device for high-energy microwave degradation of VOCs organic waste gas with different concentrations that overcomes the above problems. Summary of the Invention

[0004] The present invention aims to overcome the shortcomings of the prior art by providing a microwave high-energy device for degrading VOCs organic waste gases of varying concentrations, addressing existing issues such as low waste gas treatment efficiency, complex processes, high investment, and potential safety hazards caused by fluctuating waste gas concentrations. Relying on microwave high-energy degradation technology as its core, the present invention creatively proposes a method that simultaneously incorporates microwave low-temperature photocatalytic oxidation technology, microwave RCO (microwave high-temperature catalytic combustion) technology, and microwave RTO (microwave high-temperature direct combustion) technology, and develops a corresponding integrated microwave high-energy device for degrading VOCs organic waste gases of varying concentrations.

[0005] In order to achieve the above objectives, the present invention mainly provides the following technical solutions:

[0006] A device for high-energy microwave degradation of VOCs organic waste gas with different concentrations, comprising:

[0007] The compartment-type integrated skid has an air inlet pipe and an air outlet pipe on its left and right side walls respectively, and the air inlet pipe is equipped with a concentration component detection system;

[0008] An outer shell is mounted inside the compartment-type integrated skid via a structural frame, and the air inlet pipe and the air outlet pipe are respectively provided on both sides of the outer shell;

[0009] An inner shell is provided inside the outer shell, wherein the cavity of the inner shell is divided into three sealed annular cavities by two mutually sleeved separation sleeves, wherein the three annular cavities are respectively a low-temperature chamber, a medium-high-temperature chamber, and a high-temperature chamber from the outside to the inside, and a catalytic carrier is respectively provided in the low-temperature chamber, the medium-high-temperature chamber, and the high-temperature chamber;

[0010] an inlet and outlet switching device for switching the connection between the inlet and outlet pipes and the three different chambers, and for connecting the inlet and outlet pipes to the corresponding chambers according to the gas concentration detected by the concentration component detection system;

[0011] It also includes a microwave generator assembly provided on the side wall of the outer shell and a microwave switching device provided in the inner shell, wherein the microwave switching device is used to switch the connection between the microwave generator assembly and three different chambers;

[0012] The microwave generator assembly, the microwave switching device and the concentration component detection system are respectively electrically connected to a control system arranged on the side wall of the compartment-type integrated skid.

[0013] Preferably, the inlet and outlet air switching device includes an outlet fixing seat and an inlet fixing seat fixedly arranged at the upper and lower ends of the outer shell, and an air duct is respectively provided inside the outlet fixing seat and the inlet fixing seat. The air duct is provided with three switching ports corresponding to the lower ends of the three chambers at intervals on one side of the air duct close to the inner shell, and the outer ends of the two air ducts are respectively sealed and connected to the inlet pipe and the outlet pipe;

[0014] A rotary motor is provided at the lower end of the air intake fixing seat, and an output shaft of the rotary motor passes through the air intake fixing seat and is fixedly connected to the center of the lower end of the inner shell;

[0015] The low-temperature chamber, the medium-high-temperature chamber, and the high-temperature chamber are respectively provided with an air guide hole one at the upper and lower ends. The air guide holes one on the three chambers are respectively staggered in the radial direction. When the rotating motor drives the inner shell to rotate at different angles, any of the switching ports is connected to the air guide hole one on the corresponding chamber up and down.

[0016] Preferably, the microwave generator assembly includes a microwave excitation source arranged on the inner wall of the compartment-type integrated skid and magnetrons circumferentially spaced apart on the side wall of the shell, and the microwave emission ports of the magnetrons are embedded in the side wall of the shell.

[0017] Preferably, the microwave switching device includes microwave through-holes evenly spaced apart on the side wall of the inner shell, a first microwave conduit evenly spaced apart between the inner shell and the outermost separation sleeve, and a second microwave conduit evenly spaced apart between the inner shell and the innermost separation sleeve, wherein the first microwave conduit connects the outer side of the inner shell with the medium- and high-temperature chamber, and the second microwave conduit connects the outer side of the inner shell with the high-temperature chamber.

[0018] The microwave through-holes, microwave conduit 1 and microwave conduit 2 are staggered in the circumferential direction. When the inner shell rotates at different angles, the microwave through-holes, microwave conduit 1 and microwave conduit 2 can respectively correspond to the microwave emission port of the magnetron.

[0019] Preferably, a high-temperature catalytic carrier is provided in the high-temperature chamber, and a heat-insulating layer is provided between the high-temperature catalytic carrier and the side wall of the high-temperature chamber.

[0020] Preferably, it further comprises a safety overflow valve and a gas safety alarm provided on the gas outlet pipe, and the gas safety alarm is electrically connected to the control system.

[0021] Preferably, a filter and a flame arrester are also installed on the air intake pipe;

[0022] The filter and the flame arrester are electrically connected to the control system respectively.

[0023] Preferably, a pressure transmitter and a temperature transmitter are installed on the air inlet pipe and the air outlet pipe;

[0024] The pressure transmitter and the temperature transmitter are electrically connected to the control system respectively.

[0025] Preferably, it also includes an equipment inspection port and a distribution box on the outer wall of the compartment-type integrated skid, and the control system is installed in the distribution box.

[0026] Preferably, a skid-mounted base is provided at the bottom of the compartment-type integrated skid.

[0027] Compared with the prior art, the beneficial effects of the present invention are mainly reflected in:

[0028] The innovative features of the microwave high-energy device for degrading VOCs organic waste gas of different concentrations are:

[0029] 1. This invention fully utilizes the different characteristics of microwaves generated on different carriers and in different temperature ranges. By classifying organic waste gas into different cavities according to concentration and integrating the equipment into an integrated system, it is applicable to various complex working conditions and waste gas of different concentrations, and improves the overall efficiency of microwave high-energy degradation of VOCs organic waste gas of different concentrations.

[0030] 2. The present invention utilizes microwave- and low-temperature photocatalytic oxidation technology within a low-temperature chamber, overcoming the issues of low energy and inefficient shortwave UV generation during EUV lamp treatment, as well as the need for repeated equipment design based on varying treatment capacities. By utilizing microwave energy to drive the UV lamp's photocatalytic effect, the technology rapidly catalyzes and degrades waste gas, enabling thorough treatment and purification of low- and medium-concentration waste gas, ensuring full compliance with emission standards.

[0031] 3. The present invention utilizes microwave RCO (microwave high-temperature catalytic combustion) technology within the medium- and high-temperature chamber. This technology avoids the unstable catalytic effect of traditional catalytic combustion methods, which are significantly affected by factors such as wind speed and temperature, resulting in large fluctuations in exhaust gas concentration and catalyst deactivation due to overheating. Furthermore, it overcomes the high energy consumption and complex structure of traditional catalytic combustion exhaust gas treatment equipment.

[0032] 4. The present invention utilizes microwave RTO (microwave high-temperature direct combustion) technology within the high-temperature chamber. This technology leverages both the thermal and non-thermal effects of microwaves, achieving instant heating with no preheating required, no thermal inertia, and no open flame, allowing for immediate start-up and operation. This overcomes the drawbacks of traditional combustion methods, such as high flame temperatures that can easily cause oxygen and nitrogen in the air to interact and generate NOx, polluting the environment. It also avoids the potential safety hazards associated with open flames, effectively circumventing the equipment's high energy consumption and complex structure.

[0033] 5. Compared with the existing process combination equipment, it has low one-time investment and low operating costs. It can be used in various harsh environments, various concentrations and components, and is resistant to high temperature, high humidity, corrosion, safety and explosion-proof.

[0034] The above description is only an overview of the technical solution of the present invention. In order to clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following preferred embodiments of the present invention are described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0036] Figure 1 This is a three-dimensional diagram of the device for degrading VOCs organic waste gas with different concentrations using microwave high energy according to the present invention;

[0037] Figure 2 This is a front view of the device for high-energy microwave degradation of VOCs organic waste gas with different concentrations according to the present invention;

[0038] Figure 3 This is a cross-sectional view of a device for high-energy microwave degradation of VOCs organic waste gas with different concentrations according to the present invention;

[0039] Figure 4 This is a schematic diagram of the overall structure of the outer shell and inner shell of the device for high-energy microwave degradation of VOCs organic waste gas with different concentrations according to the present invention;

[0040] Figure 5 It is a top view of the outer shell and the inner shell of the device for high-energy microwave degradation of VOCs organic waste gas with different concentrations according to the present invention;

[0041] Description of reference numerals:

[0042] 1. Compartment-type integrated skid; 11. Inlet pipe; 12. Outlet pipe; 13. Filter; 14. Flame arrester; 15. Pressure transmitter; 16. Temperature transmitter; 17. Safety relief valve; 18. Distribution box; 19. Equipment maintenance port; 20. Skid-mounted base;

[0043] 2. Concentration component detection system;

[0044] 3. Shell; 31. Structural frame;

[0045] 4. Inner shell; 41. Separating sleeve; 411. Thermal insulation layer; 42. Low-temperature chamber; 43. Medium- and high-temperature chamber; 44. High-temperature chamber; 45. Catalytic carrier; 451. Microwave electrodeless UV lamp; 452. Catalyst carrier; 453. High-temperature catalyst carrier; 46. Air guide hole 1;

[0046] 5. Inlet and outlet switching device; 51. Outlet fixing seat; 52. Inlet fixing seat; 53. Air duct; 54. Switching port; 55. Rotating motor;

[0047] 6. Control system;

[0048] 7. Microwave generator assembly; 71. Microwave excitation source; 72. Magnetron;

[0049] 8. Microwave switching device; 81. Microwave perforator; 82. Microwave duct one; 83. Microwave duct two; 9. Gas safety alarm. DETAILED DESCRIPTION

[0050] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation method, structure, characteristics and effects of the device for high-energy microwave degradation of VOCs organic waste gas with different concentrations proposed by the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0051] like Figure 1-5As shown, the device for high-energy microwave degradation of VOCs organic waste gas with different concentrations of the present invention comprises:

[0052] The compartment-type integrated skid 1 has an air inlet pipe 11 and an air outlet pipe 12 on its left and right side walls, respectively. The air inlet pipe 11 is provided with a concentration component detection system 2;

[0053] The outer shell 3 is installed inside the compartment-type integrated skid 1 through a structural frame 31, and the air inlet pipe 11 and the air outlet pipe 12 are respectively provided on both sides of the outer shell 3;

[0054] The inner shell 4 is arranged inside the outer shell 3. The cavity of the inner shell 4 is divided into three sealed annular cavities by two mutually connected separation sleeves 41. The three annular cavities are respectively a low-temperature chamber 42, a medium-high temperature chamber 43 and a high-temperature chamber 44 from the outside to the inside. Catalytic carriers 45 are respectively arranged in the low-temperature chamber 42, the medium-high temperature chamber 43 and the high-temperature chamber 44; two separation sleeves 41 are welded inside the inner shell 4, and the three form an integral structural component.

[0055] The low-temperature chamber 42 is typically below 100°C and is a microwave low-temperature photocatalytic oxidation chamber. Its internal carrier is a microwave electrodeless UV lamp 451. The wavelengths of the electrodeless UV lamp are primarily 254nm and 185nm, with a UV output of 6-26% at the 185nm wavelength. Microwave energy is primarily used to drive the electrodeless UV lamp to produce a photocatalytic effect, rapidly catalytically degrading waste gas and capable of treating medium- and low-concentration VOCs. The medium- and high-temperature chamber 43 is typically 300-500°C and is a microwave RCO (microwave high-temperature catalytic combustion) chamber. The internal catalyst carrier 452 is a high-temperature precious metal catalyst, etc. The catalyst can catalyze a reaction with VOCs and oxidize and decompose combustible substances in volatile organic compounds. The catalyst can be a precious metal catalyst, a metal oxide catalyst, or a precious metal-transition metal oxide catalyst. The catalyst carrier can be a metal oxide carrier, a molecular sieve carrier, a glass carrier, a ceramic carrier, or activated carbon. It can process high-concentration VOCs that are not susceptible to catalyst poisoning. High-temperature chamber 44, typically at 800°C or above, is a microwave RTO (microwave high-temperature direct combustion) chamber. Its internal carrier is a high-temperature catalytic carrier 453, capable of treating a variety of high-concentration exhaust gases suitable for combustion. The temperature detection module monitors each chamber's parameters in real time, enabling dynamic feedback and temperature adjustment via control system 6.

[0056] an inlet and outlet switching device 5 for switching the connection between the inlet pipe 11 and the outlet pipe 12 and the three different chambers, and for connecting the inlet pipe 11 and the outlet pipe 12 to the corresponding chambers according to the gas concentration detected by the concentration component detection system 2;

[0057] Specifically, when the exhaust gas enters from the air inlet pipe 11, the concentration component detection system 2 can detect the gas concentration, and the inlet and outlet gas switching device 5 switches the gas into the corresponding processing chamber according to the concentration of the gas detected by the concentration component detection system 2, that is, the air inlet pipe 11 is connected to the chamber that is suitable for processing the exhaust gas of this concentration, and the air outlet pipe 12 can also be connected to the corresponding exhaust gas processing chamber for exhaust.

[0058] It also includes a microwave generator assembly 7 provided on the side wall of the outer shell 3 and a microwave switching device 8 provided in the inner shell 4, the microwave switching device 8 is used to switch the connection between the microwave generator assembly 7 and three different chambers;

[0059] Specifically, the microwave generator assembly 7 is used to generate microwaves, and the microwave switching device 8 can connect the microwave generator assembly 7 with the chamber where exhaust gas treatment is required, so that the microwaves enter the chamber for catalytic reaction and exhaust gas catalytic treatment.

[0060] The microwave generator assembly 7 , the microwave switching device 8 and the concentration component detection system 2 are respectively electrically connected to the control system 6 provided on the side wall of the compartment-type integrated skid 1 .

[0061] like Figure 3 、 Figure 4 and Figure 5 As shown, the inlet and outlet switching device 5 includes an outlet fixing seat 51 and an inlet fixing seat 52 fixedly arranged at the upper and lower ends of the outer shell 3. An air duct 53 is respectively provided inside the outlet fixing seat 51 and the inlet fixing seat 52. The air duct 53 is provided with three switching ports 54 corresponding to the lower ends of the three chambers at intervals on one side of the air duct 53 close to the inner shell 4. The outer ends of the two air ducts 53 are respectively sealed and connected to the inlet pipe 11 and the outlet pipe 12;

[0062] A rotary motor 55 is provided at the lower end of the air intake fixing seat 52 , and the output shaft of the rotary motor 55 passes through the air intake fixing seat 52 and is fixedly connected to the center of the lower end of the inner shell 4 ;

[0063] The low-temperature chamber 42, the medium-high-temperature chamber 43, and the high-temperature chamber 44 are respectively provided with air guide holes 46 at the upper and lower ends. The air guide holes 46 on the three chambers are staggered in the radial direction. When the rotating motor 55 drives the inner shell 4 to rotate at different angles, any of the switching ports 54 is connected to the air guide holes 46 on the corresponding chamber.

[0064] In the present invention, when switching between inlet and outlet chambers, the rotary motor 55 drives the inner shell 4 to rotate a certain angle until the air guide holes 46 at the upper and lower ends of the desired chamber are vertically connected to the corresponding switching port 54. The rotary motor 55 then stops rotating. At this point, the air inlet pipe 11 is connected to the interior of the desired chamber, allowing gas to be transported to the corresponding chamber to achieve catalytic treatment. Preferably, the controller of the rotary motor 55 is connected to the control system 6. The control system 6 can control the rotation of the rotary motor 55 based on the gas concentration detected by the concentration component detection system 2, thereby achieving automatic chamber switching.

[0065] like Figure 3 As shown, the microwave generator assembly 7 includes a microwave excitation source 71 mounted on the inner wall of the compartment-type integrated skid 1 and magnetrons 72 circumferentially spaced apart on the sidewalls of the housing 3. The microwave emission ports of the magnetrons 72 are embedded in the sidewalls of the housing 3. The magnetrons 72 are arranged in a staggered pattern, each generating microwaves to excite the carriers in each chamber to process the exhaust gas. The exhaust gas is then transferred to the appropriate chamber for treatment.

[0066] The microwave switching device 8 includes microwave through-holes 81 evenly spaced apart on the sidewall of the inner shell 4, microwave conduits 82 evenly spaced apart between the inner shell 4 and the outermost separating sleeve 41, and microwave conduits 83 evenly spaced apart between the inner shell 4 and the innermost separating sleeve 41. The microwave conduits 82 connect the outer side of the inner shell 4 with the medium- and high-temperature chamber 43, and the microwave conduits 83 connect the outer side of the inner shell 4 with the high-temperature chamber 44.

[0067] The microwave through-holes 81 , microwave conduit 1 82 and microwave conduit 2 83 are staggered in the circumferential direction. When the inner shell 4 rotates at different angles, the microwave through-holes 81 , microwave conduit 1 82 and microwave conduit 2 83 can respectively correspond to the microwave emission ports of the magnetron 72 .

[0068] Specifically, when the concentration component detection system 2 detects low-concentration exhaust gas, the rotating motor 55 drives the inner shell 4 to rotate, the air inlet pipe 11 and the air outlet pipe 12 are connected to the low-temperature chamber 42, and the inner shell 4 rotates relative to the outer shell 3. Finally, the microwave emission port of the magnetron 72 on the side wall of the outer shell 3 is connected with the microwave through-hole 81 on the side wall of the inner shell 4, and the microwave conduit 1 82 and the microwave conduit 2 83 are staggered with the microwave emission port of the magnetron 72. Therefore, the microwave only penetrates into the low-temperature chamber 42 and does not penetrate into other chambers, so that the low-concentration exhaust gas is discharged at low temperature. Chamber 42 undergoes microwave catalytic treatment. Similarly, when the air inlet pipe 11 is connected to the medium- and high-temperature chamber 43, microwave conduit 1 82 corresponds to the microwave emission port of the magnetron 72 on the side wall of the outer shell 3, while microwave conduit 2 83 and microwave perforation 81 are offset from the microwave emission port. Therefore, microwaves do not penetrate into the high-temperature chamber 44 and the low-temperature chamber 42, while the exhaust gas entering the medium- and high-temperature chamber 43 is catalytically treated. The principle of microwave penetration into the high-temperature chamber 44 is the same as that into the medium- and high-temperature chamber 43 and the low-temperature chamber 42, and will not be repeated here. The microwave generator assembly 7 and the microwave switching device 8 can transmit microwaves to the corresponding chamber based on the exhaust gas concentration parameters detected by the system. It should be noted that the rotating motor 55 drives the inner shell 4 to rotate, which can simultaneously switch gas and microwaves into the same chamber.

[0069] A high-temperature catalyst carrier 453 is disposed within the high-temperature chamber 44, and a heat-insulating layer 411 is disposed between the high-temperature catalyst carrier 453 and the sidewall of the high-temperature chamber 44. The heat-insulating layer 411 is made of a high-temperature resistant material to prevent high temperatures from diffusing into the medium- and high-temperature chambers and the low-temperature chamber, thereby extending the service life of each chamber.

[0070] The outermost layer of the inner shell 4 is provided with heat-insulating materials, such as heat-insulating cotton, which can effectively prevent the temperature loss in the cavity.

[0071] The system also includes a safety relief valve 17 and a gas safety alarm 9 provided on the gas outlet pipe 12. The gas safety alarm 9 is electrically connected to the control system 6. The safety relief valve 17 and the gas safety alarm 7 provide safety guarantees against abnormal operation.

[0072] The air inlet pipe 11 is also equipped with a filter 13 and a flame arrester 14;

[0073] The filter 13 and the flame arrester 14 are electrically connected to the control system 6 respectively.

[0074] The air inlet pipe 11 and the air outlet pipe 12 are both installed with a pressure transmitter 15 and a temperature transmitter 16;

[0075] The pressure transmitter 15 and the temperature transmitter 16 are electrically connected to the control system 6 respectively.

[0076] The control system 6 is also installed in the control box 18 and an equipment access port 19 on the outer wall of the compartment-type integrated skid 1. The equipment access port 19 facilitates the staff to inspect and maintain the interior of the device; the distribution box 18 is used to supply power to various electrical components to ensure their normal operation.

[0077] A skid-mounted base 20 is provided at the bottom of the compartment-type integrated skid 1 .

[0078] The present invention provides a device for high-energy microwave degradation of VOCs organic waste gas with different concentrations. By arranging multi-level inner chambers in a microwave cavity, microwave energy can be transmitted to different chambers in a more concentrated manner, and the waste gas is treated through the physical and chemical effects produced by different carriers. The device is suitable for various complex working conditions and waste gas with different concentrations. It is resistant to high temperature, high humidity, corrosion, safety and explosion-proof, has strong operability, and has obvious cost advantages, thereby improving the overall efficiency of high-energy microwave degradation of VOCs organic waste gas with different concentrations.

[0079] The purpose of the present invention is to protect: 1. A technical route (microwave) and equipment (microwave) to solve the effect that can only be achieved by different combination process equipment. 2. The integration of microwave high-energy degradation equipment, through the internal layout and air intake switching to the corresponding microwave low-temperature photocatalytic oxidation chamber, microwave RCO (microwave high-temperature catalytic combustion) chamber and microwave RTO (microwave high-temperature direct combustion) chamber for treatment, to achieve the purpose of treating gases of different concentrations and components. 3. The integration of microwave photocatalytic oxidation equipment, microwave RCO (microwave high-temperature catalytic combustion) equipment and microwave RTO (microwave high-temperature direct combustion) equipment is realized. 4. The present invention is intended to cover the shortcomings and disadvantages in actual applications brought about by single microwave low-temperature photocatalytic oxidation technology, microwave RCO (microwave high-temperature catalytic combustion method) and microwave RTO (microwave high-temperature direct combustion method).

[0080] The present invention provides a device for high-energy microwave degradation of VOCs organic waste gas with different concentrations, comprising the following steps:

[0081] 1. Organic waste gas with different concentrations of VOCs enters the device's air intake pipe through the collection system pipeline, and the concentration component detection system detects and determines which treatment chamber the waste gas is suitable for entering. The transverse cross-section of the outer shell and inner shell is polygonal or circular;

[0082] 2. Multiple microwave generator assemblies capable of generating microwaves are disposed on the exterior of the housing. The microwave generators are arranged in a staggered arrangement, each generating microwaves to excite the carriers in each chamber for treating the exhaust gas. The exhaust gas is then transferred to the appropriate chamber for treatment.

[0083] 3. The cavity of the inner shell is divided into the following annular spaces from the outside to the inside: the outer low-temperature chamber: usually below 100°C, which belongs to the microwave low-temperature photocatalytic oxidation chamber. The internal carrier is a microwave electrodeless ultraviolet lamp, which is arranged inside the outermost low-temperature zone cavity. The wavelengths of the electrodeless ultraviolet lamp are mainly 254nm and 185nm, among which the output rate of ultraviolet light with a wavelength of 185nm is 6-26%. Microwave energy is mainly used to drive the electrodeless ultraviolet lamp to produce a photocatalytic effect, which has a rapid catalytic degradation effect on waste gas and can treat medium and low-concentration VOCs organic waste gas.

[0084] 4. The cavity of the inner shell is divided into the following annular spaces from the outside to the inside: a middle layer medium-high temperature chamber: usually 300-500°C, belonging to the microwave RCO (microwave high-temperature catalytic combustion) chamber, the internal catalyst carrier is a high-temperature precious metal catalyst, etc., arranged inside the middle layer medium-high temperature zone cavity, wherein the catalyst can catalyze the reaction with VOCs organic waste gas and oxidize and decompose the combustible substances in volatile organic compounds. The catalyst can be a precious metal catalyst, a metal oxide catalyst, a precious metal-transition metal oxide catalyst, etc. The catalytic carrier can be a metal oxide carrier, a molecular sieve carrier, a glass carrier, a ceramic carrier, activated carbon, etc. It can treat high-concentration VOCs organic waste gas that is not easy to poison the catalyst.

[0085] 5. The cavity of the inner shell is divided into the following annular spaces from the outside to the inside: Inner high-temperature chamber: usually at 800°C and above, it belongs to the microwave RTO (microwave high-temperature direct combustion) chamber, and the internal carrier is a high-temperature catalytic carrier, which treats various high-concentration exhaust gases suitable for combustion.

[0086] 6. The microwave generator can transmit microwaves to the corresponding chamber according to the concentration parameters detected by the system.

[0087] 7. The temperature detection module detects the cavity parameters in real time and can adjust the heating temperature through dynamic feedback of the control system.

[0088] 8. The safety pressure relief device provides safety guarantee against abnormal operation.

[0089] 9. The inlet and outlet gas switching device can switch gases of different concentrations and components to a suitable chamber for catalytic treatment and discharge.

[0090] 10. The control system controls the microwave generator components and the exhaust gas treatment system, and can be remotely controlled by the base, completely realizing unmanned operation.

[0091] The present invention is further described above in conjunction with the embodiments, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A device for high-energy microwave degradation of VOCs organic waste gas with different concentrations, characterized in that: It includes: A compartment-type integrated skid (1) is provided with an air inlet pipe (11) and an air outlet pipe (12) on its left and right side walls, respectively, and a concentration component detection system (2) is provided on the air inlet pipe (11); A shell (3) is installed inside the compartment-type integrated skid (1) through a structural frame (31), and the air inlet pipe (11) and the air outlet pipe (12) are respectively provided on both sides of the shell (3); An inner shell (4) is arranged inside the outer shell (3), the cavity of the inner shell (4) being divided into three sealed annular cavities by two mutually sleeved separation sleeves (41), the three annular cavities being respectively a low-temperature chamber (42), a medium-high temperature chamber (43), and a high-temperature chamber (44) from the outside to the inside, and a catalytic carrier (45) being respectively arranged in each of the low-temperature chamber (42), the medium-high temperature chamber (43), and the high-temperature chamber (44); an inlet and outlet switching device (5) for switching the communication between the inlet pipe (11) and the outlet pipe (12) and the three different chambers, and capable of connecting the inlet pipe (11) and the outlet pipe (12) to the corresponding chambers according to the gas concentration detected by the concentration component detection system (2); It also includes a microwave generator assembly (7) arranged on the side wall of the outer shell (3) and a microwave switching device (8) arranged in the inner shell (4), wherein the microwave switching device (8) is used to switch the connection between the microwave generator assembly (7) and three different chambers; The microwave generator assembly (7), the microwave switching device (8), and the concentration component detection system (2) are respectively electrically connected to a control system (6) provided on the side wall of the compartment-type integrated skid (1).

2. The device for degrading VOCs organic waste gas with different concentrations by microwave high energy according to claim 1 is characterized in that: The inlet and outlet air switching device (5) comprises an outlet fixing seat (51) and an inlet fixing seat (52) fixedly arranged at the upper and lower ends of the outer shell (3); an air duct (53) is respectively provided inside the outlet fixing seat (51) and the inlet fixing seat (52); three switching ports (54) corresponding to the lower ends of the three chambers are spaced apart on one side of the air duct (53) close to the inner shell (4); the outer ends of the two air ducts (53) are respectively connected to the inlet pipe (11) and the outlet pipe (12); A rotary motor (55) is provided at the lower end of the air intake fixing seat (52), and an output shaft of the rotary motor (55) passes through the air intake fixing seat (52) and is fixedly connected to the center of the lower end of the inner shell (4); The low-temperature chamber (42), the medium-high-temperature chamber (43), and the high-temperature chamber (44) are respectively provided with an air guide hole (46) at the upper and lower ends. The air guide holes (46) on the three chambers are respectively staggered in the radial direction. When the rotating motor (55) drives the inner shell (4) to rotate at different angles, any of the switching ports (54) is connected to the air guide hole (46) on the corresponding chamber.

3. The device for high-energy microwave degradation of VOCs organic waste gas with different concentrations according to claim 2 is characterized in that: The microwave generator assembly (7) comprises a microwave excitation source (71) arranged on the inner wall of the compartment-type integrated skid (1) and magnetrons (72) arranged at circumferential intervals on the side wall of the shell (3), and microwave emission ports of the magnetrons (72) are embedded in the side wall of the shell (3).

4. The device for degrading VOCs organic waste gas with different concentrations using microwave high energy according to claim 3 is characterized by: The microwave switching device (8) comprises microwave through-holes (81) uniformly spaced apart on the side wall of the inner shell (4), microwave conduit 1 (82) uniformly spaced apart between the inner shell (4) and the outermost separation sleeve (41), and microwave conduit 2 (83) uniformly spaced apart between the inner shell (4) and the innermost separation sleeve (41), wherein the microwave conduit 1 (82) connects the outer side of the inner shell (4) with the medium-high temperature chamber (43), and the microwave conduit 2 (83) connects the outer side of the inner shell (4) with the high-temperature chamber (44); The microwave perforations (81), microwave conduit 1 (82), and microwave conduit 2 (83) are staggered in the circumferential direction. When the inner shell (4) rotates at different angles, the microwave perforations (81), microwave conduit 1 (82), and microwave conduit 2 (83) can respectively correspond to the microwave emission ports of the magnetron (72).

5. The device for high-energy microwave degradation of VOCs organic waste gas with different concentrations according to claim 1 is characterized in that: A high-temperature catalytic carrier (453) is provided in the high-temperature chamber (44), and a heat-insulating layer (411) is provided between the high-temperature catalytic carrier (453) and a side wall of the high-temperature chamber (44).

6. The device for degrading VOCs organic waste gas with different concentrations by microwave high energy according to claim 1 is characterized in that: It also includes a safety overflow valve (17) and a gas safety alarm (9) provided on the gas outlet pipe (12), and the gas safety alarm (9) is electrically connected to the control system (6).

7. The device for degrading VOCs organic waste gas with different concentrations using microwave high energy according to claim 1 is characterized by: The air inlet pipe (11) is also equipped with a filter (13) and a flame arrester (14); The filter (13) and the flame arrester (14) are electrically connected to the control system (6) respectively.

8. The device for degrading VOCs organic waste gas with different concentrations using microwave high energy according to claim 1 is characterized by: The air inlet pipe (11) and the air outlet pipe (12) are both equipped with a pressure transmitter (15) and a temperature transmitter (16); The pressure transmitter (15) and the temperature transmitter (16) are electrically connected to the control system (6) respectively.

9. The device for degrading VOCs organic waste gas with different concentrations by microwave high energy according to claim 1 is characterized in that: It also includes an equipment inspection port (19) and a distribution box (18) on the outer wall of the compartment-type integrated skid (1), and the control system (6) is installed in the distribution box (18).

10. The device for degrading VOCs organic waste gas with different concentrations by microwave high energy according to claim 1, characterized in that: A skid-mounted base (20) is provided at the bottom of the compartment-type integrated skid (1).

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