A multi-element detection system and method for packed bed structure under high-temperature combustion atmosphere

Abstract

The application discloses a kind of high-temperature combustion atmosphere under packed bed structure multivariate detection system and method, gas supply system, porous medium combustion unit, real-time monitoring system sequentially connect, the top of porous medium combustion unit is provided with high-temperature flue gas collection pipe, high-temperature flue gas collection pipe is connected product recovery chamber, product analyzer in turn;Real-time detection system includes temperature monitoring system and shape filler topography monitoring system;Detection rod is used to detect temperature abnormal area and the temperature and topography condition of different height cross section in combustion unit interior.This application uses thermocouple and high-speed camera to monitor temperature and outer filler crushing and discoloration condition in real time, detects the local temperature and topography state of inner filler that cannot be directly observed by detection rod, records overall damage and discoloration degree, quantitatively judges whether damage affects combustion.The health status of detection packed bed is helpful to the efficient use of low calorific value fuel, reduces pollutant emission, avoids resource waste.

Description

Technical Field

[0001] This invention relates to the field of porous media combustion, and more specifically, to a multi-element detection system and method for bed structure under high-temperature combustion atmosphere. Background Technology

[0002] Porous media combustion is a novel combustion technology that is increasingly widely used in internal combustion engines, heating equipment, and radiant heaters. Its combustion process involves a thermal recirculation effect. After fuel enters the porous media combustion unit, it is atomized into gas at high temperature. Through the thermal conductivity and transfer properties between gas and solids, and between solids themselves, the heat generated by fuel combustion is transferred to the upstream preheating zone. This preheats unburned fuel before it enters the reaction zone. This recirculation mechanism reduces heat loss, increases flame temperature, and improves combustion rate and flame stability. Compared to free-space combustion, porous media combustion produces a more uniform flame temperature distribution and a more stable temperature gradient, thereby reducing pollutant generation and broadening the combustible range. Porous media have high porosity, a large solid surface area, and high heat capacity, resulting in strong heat storage and conductivity. Furthermore, the packing of porous media into a filled bed increases gas turbulence intensity, which is beneficial for improving heat exchange. Therefore, research on fuel combustion in porous media filled beds is of great significance.

[0003] After catalysts are supported on porous media, they have a larger specific surface area and pore volume, increasing the number of surface active sites and improving oxygen mobility. This allows more lattice oxygen to be converted into surface oxygen, which helps to accelerate the fuel reaction rate, improve fuel utilization, and lower the fuel ignition temperature, enabling the reaction to occur at lower temperatures, thus reducing pollutant formation. Throughout the combustion process, the porous media serves as both a catalyst support and a packed bed to stabilize combustion. However, carbon deposition and sintering inevitably occur during combustion, leading to catalyst deactivation and discoloration.

[0004] When the porous media filler is damaged or discolored beyond a certain amount, it will affect the combustion reaction. Furthermore, some of the filler inside the burner cannot be directly observed, and its morphology cannot be detected. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned problems by providing a simple, easy-to-operate, and quantitatively accurate multi-element detection system and method for bed structure under high-temperature combustion atmosphere.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-element detection system for a bed structure under a high-temperature combustion atmosphere, characterized in that it includes a porous media combustion unit, an air supply system connected to the porous media combustion unit, a real-time monitoring system, and a detection rod; wherein the air supply system provides air and fuel to the porous media combustion unit;

[0007] The real-time monitoring system includes a monitoring unit and a detection rod. The monitoring unit includes a high-speed camera and multiple thermocouples that are sequentially inserted into the porous medium combustion unit. The high-speed camera is connected to an image analyzer, and the thermocouples are connected to a temperature monitor. The detection rod includes a thermocouple rod and a morphology scanner. The detection rod is connected to the image analyzer and the temperature monitor, respectively. The image analyzer, the temperature monitor, the product analyzer, and the variable diameter sieve are respectively connected to an intelligent control terminal.

[0008] Furthermore, the porous media combustion unit, from top to bottom, includes a porous media catalytic combustion zone, a porous media preheating zone, and a porous media anti-backfire zone. The porous media anti-backfire zone is connected to the front end of the premixing chamber via an air inlet pipe. The air supply system includes an air compressor and a fuel storage tank. The air compressor and the fuel storage tank are connected to a pressure reducing valve, a flow meter, and a check valve via pipelines, respectively, and then connected to a mass flow meter. The mass flow meter is connected to a flame arrester and the rear end of the premixing chamber. The top of the porous media combustion unit is equipped with a high-energy igniter and a high-temperature flue gas collection pipe. The high-temperature flue gas collection pipe is connected to a product recovery chamber and a product analyzer.

[0009] Furthermore, the upper porous media catalytic combustion zone of the porous media combustion unit is filled with 13mm alumina microspheres loaded with catalyst, the lower porous media preheating zone is filled with 3mm zirconia microspheres, the bottom anti-backfire layer is made of 60PPI zirconia foam ceramic board, and the wall of the porous media combustion unit is made of quartz glass.

[0010] Furthermore, the outer wall of the detection rod is made of quartz glass, and a thermocouple rod is installed inside and a morphology scanner is installed at the bottom. The morphology scanner detects the temperature and morphology of the internal cross-section of the porous medium combustion unit.

[0011] Furthermore, the information collected by the high-speed camera and the detection rod is transmitted to the image analyzer for processing and analysis. The results are transmitted to the intelligent control terminal and compared with the source model to confirm the overall discoloration rate and breakage rate of the porous medium.

[0012] Furthermore, the image analyzer includes an image acquisition module, a multi-threaded image processing module, a result display module, and a result communication and database storage module. Images captured by the high-speed camera and the detection rod are collected and stored by the image acquisition module, then processed and analyzed by the multi-threaded image processing module. The processing results are transmitted to the result display module for display by the intelligent control terminal and stored in the result communication and database for easy retrieval later.

[0013] Furthermore, the multi-threaded image processing module includes a shape processing module and a color processing module, which run simultaneously.

[0014] Furthermore, the variable diameter screen is equipped with a porous media extractor and screens of different diameters, which are connected to an intelligent control terminal.

[0015] This invention also provides a method for multi-element detection of a bed structure under a high-temperature combustion atmosphere, characterized by comprising the following steps:

[0016] Step S1. Before the device is put into operation, establish an overall filling material source model based on the actual filling situation;

[0017] Step S2. The gas supply system provides air and fuel to the porous media combustion unit for ignition and combustion;

[0018] Step S3. Thermocouples measure the temperature at different locations within the porous medium combustion unit. The measured temperatures are recorded by a temperature monitor to monitor the real-time temperature.

[0019] Step S4. A high-speed camera records and captures images in real time to monitor the breakage rate of the outer layer of the porous media combustion unit and the discoloration of the catalyst-loaded packing.

[0020] Step S5. (1) Abnormal temperature in the region, (2) Observed damage to the external packing material exceeding 20%, (3) Observed discoloration of the externally supported catalyst packing material exceeding 20%; When any of the above abnormalities are found, use a detection rod to detect the temperature and morphology of the cross-section at different heights inside the porous media combustion unit.

[0021] Step S6. The results from the high-speed camera and the detection rod are transmitted to the image analyzer to analyze the breakage rate and discoloration rate. When the breakage rate or discoloration rate exceeds 20%, the air intake is stopped and the combustion is interrupted.

[0022] Step S7. The product is transferred to the product recovery chamber through the high-temperature flue gas collection pipe, where the product is analyzed by the product analyzer and the quality of different products is recorded.

[0023] Step S8. After the temperature drops to room temperature, use a porous media extractor with a variable diameter screen to remove all the packing material. Pass them through screens of different diameters to retain intact packing material and remove broken packing material.

[0024] Further, step S6 specifically includes:

[0025] The detection results from the high-speed camera and the detection rod are jointly transmitted to the image analyzer. Based on the target object detection model, target detection is performed on the image to be identified, and a target detection box is obtained. The area where the target detection box is located is determined as the main body area in the image to be identified. Then, it is binarized to remove the background and extract the target object, resulting in a two-dimensional image. The shape processing module extracts its boundary to obtain object boundary map A. Then, based on the coordinates of the sampling position, the corresponding position in the source model is located to obtain the corresponding object boundary map B. A and B are shape matched. If the match fails, the filling material is considered broken. At the same time, the color processing module separates the binarized image using the Otsu method and spot detection threshold. By selecting appropriate shape parameters through binarization segmentation threshold, a color-changing area with obvious contrast is obtained and marked. The area of ​​the color-changing area is calculated and compared with the area of ​​the overall filling material. The analysis results of the two modules are transmitted to the intelligent control terminal. When the breakage rate or color-changing rate exceeds 20%, the air intake is stopped and combustion is interrupted.

[0026] Compared with the prior art, the present invention has at least the following beneficial effects:

[0027] 1. A temperature monitoring instrument is installed, which can monitor the temperature at different locations inside the burner in real time during high-temperature combustion. When local temperature abnormalities occur, timely detection can be carried out to find the cause and take corresponding remedial measures to avoid the occurrence of danger.

[0028] 2. It has the function of real-time monitoring of the packed bed in the porous media combustion unit, observing their health status from the degree of damage and color change. When some of the porous media in the packed bed reaches the end of its service life, it is replaced in time to ensure the stable combustion and efficient utilization of low-calorific-value fuels.

[0029] 3. It has the function of detecting the temperature and morphology of the filler material that cannot be directly observed. The high-speed camera captures and monitors the damage rate or discoloration of the outer layer filler balls inside the combustion unit. The detection rod detects the temperature and morphology of the filler balls at different heights inside the combustion unit. The combination of the two makes a judgment on the overall health status of the filler material, improves the quantitative indicators for judging the service life of porous media, and avoids affecting the combustion of fuel. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0031] In the diagram: 1-Intelligent control terminal, 2-Image analyzer, 3-Temperature monitor, 4-High-speed camera, 5-Thermocouple, 6-Premixing chamber, 7-Inlet pipe, 8-Porous media backfire prevention zone, 9-Porous media preheating zone, 10-Porous media catalytic combustion zone, 11-High-energy igniter, 12-High-temperature flue gas collection pipe, 13-Product recovery chamber, 14-Product analyzer, 15-Flame arrester, 16-Premixing chamber, 17-Check valve, 18-Flow meter, 19-Pressure reducing valve, 20-Fuel storage tank, 21-Air compressor, 22-Detection rod, 23-Thermocouple rod, 24-Topography scanner, 25-Variable diameter sieve. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] It should be noted that, unless otherwise specified, the experimental methods described in the following embodiments are all conventional methods, and the reagents and materials described are all commercially available unless otherwise specified. In the description of this invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0034] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0035] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] like Figure 1As shown, a multi-element detection system for a bed structure under a high-temperature combustion atmosphere includes a porous media combustion unit, an air supply system connected to the porous media combustion unit, a real-time monitoring system, and a detection rod 22. The porous media combustion unit, from top to bottom, includes a porous media catalytic combustion zone 10, a porous media preheating zone 9, and a porous media backfire prevention zone 8. The porous media backfire prevention zone 8 is connected to the front end of a premixing chamber 6 via an air inlet pipe 7. The air supply system includes an air compressor 21 and a fuel storage tank 20. The air compressor 21 and the fuel storage tank 20 are connected sequentially via pipelines to a pressure reducing valve 19, a flow meter 18, and a check valve 17, and then connected to a mass flow meter 16. The mass flow meter 16 is connected sequentially to a flame arrester. 15. The premixing chamber 6 is connected to the rear end; the top of the porous medium combustion unit is equipped with a high-energy igniter 11 and a high-temperature flue gas collection pipe 12, which is connected in sequence to the product recovery chamber 13 and the product analyzer 14; the real-time detection and detection system includes a monitoring unit and a detection rod 22. The monitoring unit includes a high-speed camera 4 and a thermocouple 5. The high-speed camera 4 is connected to the image analyzer 2, and the thermocouple 5 is connected to the temperature monitor 3; the detection rod 22 includes a thermocouple rod 23 and a morphology scanner 24. The detection rod 22 is connected to the image analyzer 2 and the temperature monitor 3 respectively. The image analyzer 2, the temperature monitor 3, the product analyzer 14, and the variable diameter sieve 25 are connected to the intelligent control terminal 1 respectively.

[0037] In a further preferred embodiment, the upper part of the porous media combustion unit is filled with 13mm alumina microspheres loaded with catalyst in the porous media catalytic combustion zone, the lower part of the porous media preheating zone is filled with 3mm zirconia microspheres, the bottom anti-backfire layer is made of 60PPI zirconia foam ceramic board, and the wall of the porous media combustion unit is made of quartz glass.

[0038] In the above embodiments, the flame can be stabilized at the interface between the porous media catalytic combustion zone 10 and the preheating zone 9, preventing backfire or flameout. Zirconia microspheres are chosen for the porous media preheating zone 9 because they are heat-resistant, durable, and have good heat storage capacity, thus improving the preheating effect. The catalyst supported on the alumina microspheres in the porous media catalytic combustion zone 10 is a hexaaluminate or a noble metal-based high-temperature resistant catalyst, which accelerates the reaction rate, increases the yield of the desired product, and reduces the generation of harmful gaseous products.

[0039] In a further preferred embodiment, the outer wall of the detection rod 22 is made of quartz glass, and a thermocouple rod 23 is provided inside and a morphology scanner 24 is provided at the bottom, which are used to detect the temperature and morphology of the internal cross-section of the porous medium combustion unit, respectively.

[0040] In the above embodiments, the detection rod 22 can detect the specific location and temperature of the local temperature abnormality area through the thermocouple rod 23, and can also observe the morphology of the filling material at different heights of the porous medium combustion unit through the morphology scanner 24 at the bottom, and determine the filling material breakage or the discoloration of the filling material loaded with catalyst.

[0041] In a further preferred embodiment, the information collected by the high-speed camera 4 and the detection rod 22 is transmitted to the image analyzer 2 for processing and analysis. The results are transmitted to the intelligent control terminal 1 and compared with the source model to confirm the overall discoloration rate and breakage rate of the porous medium.

[0042] In a further preferred embodiment, the image analyzer 2 includes an image acquisition module, a multi-threaded image processing module, a result display module, and a result communication and database storage module. Images captured by the high-speed camera 4 and the detection rod 22 are collected and stored by the image acquisition system, then the images undergo multi-threaded processing and analysis. The processing results are transmitted to the intelligent control terminal 1 for display and stored in the database for subsequent retrieval.

[0043] In a further preferred embodiment, the multi-threaded image processing module includes a shape processing module and a color processing module, which run simultaneously.

[0044] In a further preferred embodiment, the variable diameter screen 25 is equipped with a porous media extractor and screens of different diameters, and is connected to the intelligent control terminal 1.

[0045] In the above embodiments, the porous media extractor can mechanically remove the filler material inside the porous media combustion unit, and remove broken filler material through a screen, while retaining intact filler material for reuse.

[0046] To better achieve the objectives of the above invention, the present invention also provides a method for multi-element detection of a packed bed structure under a high-temperature combustion atmosphere, comprising the following steps:

[0047] Step S1. Before the device is put into operation, establish an overall filling material source model based on the actual filling situation.

[0048] Step S2. Air compressor 21 provides air and fuel storage tank 20 provides fuel, which flows into premix chamber 6 through mass flow meter 16 and flame arrester 15;

[0049] Step S3. After premixing, the mixture flows into the porous medium combustion unit through the intake pipe 7 and is ignited by the high-energy igniter 11, where it burns.

[0050] Step S4. Thermocouple 5 measures the temperature at different locations within the porous medium combustion unit. The measured temperature is recorded by temperature monitor 3 to monitor the real-time temperature. When an abnormal temperature occurs in a certain area, it can be detected in time to avoid danger.

[0051] Step S5. The high-speed camera 4 records and captures images in real time to monitor the breakage rate of the outer layer of the porous media combustion unit and the discoloration of the catalyst-loaded filler.

[0052] Step S6. (1) Abnormal temperature in the region, (2) Observed damage to the external packing material exceeding 20%, (3) Observed discoloration of the externally supported catalyst packing material exceeding 20%; When any of the above abnormalities are found, use the detection rod 22 to detect the temperature and morphology of the cross-sections at different heights inside the porous media combustion unit.

[0053] Step S7. The detection results from the high-speed camera 4 and the detection rod 22 are jointly transmitted to the image analyzer. Based on the target object detection model, target detection is performed on the image to be identified to obtain the target detection box. The area where the target detection box is located is determined as the main body area in the image to be identified. Then, it is binarized to remove the background and extract the target object, resulting in a two-dimensional image. The shape processing module extracts its boundary to obtain the object boundary map A; then, based on the coordinates of the sampling position, the corresponding position in the source model is located to obtain the object boundary map B of the corresponding target object; A and B are shape matched. If the matching fails, it is considered that the filling material is broken. At the same time, the color processing module separates the binarized image through the Otsu method and spot detection threshold. Through the binarization segmentation threshold, appropriate shape parameters are selected to obtain and mark the color-changing areas with obvious contrast; the area of ​​the color-changing area is calculated and compared with the area of ​​the overall filling material. The analysis results of the two modules are transmitted to the intelligent control terminal. When the breakage rate or color-changing rate exceeds 20%, the air intake is stopped and combustion is interrupted.

[0054] Step S8. The product is transferred to the product recovery chamber 13 through the high-temperature flue gas collection pipe 12, and the product is analyzed by the product analyzer 14 to record the quality of different products.

[0055] Step S9. After the temperature drops to room temperature, use the porous media extractor of the variable diameter sieve 25 to remove all the filler material, pass them through sieves of different diameters to retain intact filler material and remove broken filler material.

[0056] The specific working process is as follows: Air compressor 21 provides air and fuel storage tank 20 provides fuel. The required flow rate is controlled by mass flow meter 16 and introduced into premixing chamber 6. After the two fuels are fully mixed, they are introduced into porous media combustion unit and ignited by high-energy igniter 11. Loading a catalyst in the porous media combustion zone can accelerate the reaction rate, reduce the ignition temperature, and increase the yield of the target product. The products generated by combustion are transferred to product recovery chamber 13 through high-temperature flue gas collection pipe 12. Then, the quality of different products is analyzed and recorded by product analyzer 14. At the same time, thermocouples 5 evenly distributed in different positions inside the combustion unit measure the real-time temperature. The measured temperature is recorded by temperature monitoring instrument 3, and it is determined whether there is any abnormal temperature in a certain area. Throughout the process, high-speed camera 4 records the porous media combustion unit. The breakage of the inner and outer layers of the overall packing and the discoloration of the catalyst-loaded packing are monitored. In the event of abnormal temperature in the area, or breakage or discoloration of the outer layer of catalyst-loaded packing exceeding 20%, the temperature and morphology of the cross-sections at different heights inside the porous media combustion unit are monitored using the detection rod 22 to check for breakage and discoloration of the packing in the abnormal temperature area or the inner layer that was not observed. If the overall packing breakage exceeds 20% or the overall catalyst-loaded packing discoloration exceeds 20% after the detection, the air intake is stopped, combustion is interrupted, and after the temperature drops to room temperature, all packing is removed by the porous media extractor in the variable diameter screen 25 controlled by the program. Then, the unbroken packing is retained through the screen, and the severely discolored packing is removed manually. The retained packing can be reused.

[0057] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the inventive concept should fall within the protection scope of the present invention. All technical contents for which protection is sought in this invention are fully described in the claims.

Claims

1. A multi-element detection system for a packed bed structure under a high-temperature combustion atmosphere, characterized in that: It includes a porous media combustion unit, an air supply system connected to the porous media combustion unit, a real-time monitoring system, and a detection rod; wherein the air supply system provides air and fuel to the porous media combustion unit; The real-time monitoring system includes a monitoring unit and a detection rod. The monitoring unit includes a high-speed camera and multiple thermocouples that are sequentially inserted into the porous medium combustion unit. The high-speed camera is connected to an image analyzer, and the thermocouples are connected to a temperature monitor. The detection rod includes a thermocouple rod and a morphology scanner. The detection rod is connected to the image analyzer and the temperature monitor, respectively. The image analyzer, the temperature monitor, the product analyzer, and the variable diameter sieve are respectively connected to an intelligent control terminal. The outer wall of the detection rod is made of quartz glass, and a thermocouple rod is installed inside and a morphology scanner is installed at the bottom. The morphology scanner detects the temperature and morphology of the internal cross-section of the porous medium combustion unit. The information collected by the high-speed camera and the detection rod is transmitted to the image analyzer for processing and analysis. The results are transmitted to the intelligent control terminal and compared with the source model to confirm the overall discoloration rate and breakage rate of the porous medium.

2. The multi-element detection system for bed structure under high-temperature combustion atmosphere according to claim 1, characterized in that: The porous media combustion unit, from top to bottom, includes a porous media catalytic combustion zone, a porous media preheating zone, and a porous media anti-backfire zone. The porous media anti-backfire zone is connected to the front end of the premixing chamber via an air inlet pipe. The air supply system includes an air compressor and a fuel storage tank. The air compressor and the fuel storage tank are connected to a pressure reducing valve, a flow meter, and a check valve via pipelines, respectively, and then connected to a mass flow meter. The mass flow meter is connected to a flame arrester and the rear end of the premixing chamber. The top of the porous media combustion unit is equipped with a high-energy igniter and a high-temperature flue gas collection pipe. The high-temperature flue gas collection pipe is connected to a product recovery chamber and a product analyzer.

3. The multi-element detection system for bed structure under high-temperature combustion atmosphere according to claim 1, characterized in that: The upper porous media catalytic combustion zone of the porous media combustion unit is filled with 13 mm alumina microspheres loaded with catalyst, the lower porous media preheating zone is filled with 3 mm zirconia microspheres, the bottom anti-backfire layer is made of 60 PPI zirconia foam ceramic board, and the wall of the porous media combustion unit is made of quartz glass.

4. The multi-element detection system for bed structure under high-temperature combustion atmosphere according to claim 1, characterized in that: The image analyzer includes an image acquisition module, a multi-threaded image processing module, a result display module, and a result communication and database storage module. Images captured by the high-speed camera and the detection rod are collected and stored by the image acquisition module, then processed and analyzed by the multi-threaded image processing module. The processing results are transmitted to the result display module for display on the intelligent control terminal and stored in the result communication and database for later retrieval.

5. The multi-element detection system for bed structure under high-temperature combustion atmosphere according to claim 4, characterized in that: The multi-threaded image processing module includes a shape processing module and a color processing module, which run simultaneously.

6. The multi-element detection system for bed structure under high-temperature combustion atmosphere according to claim 1, characterized in that: The variable diameter screen is equipped with a porous media extractor and screens of different diameters, and is connected to an intelligent control terminal.

7. The detection method of a multi-element detection system for a packed bed structure under a high-temperature combustion atmosphere according to any one of claims 1-6, characterized in that, Includes the following steps: Step S1. Before the device is put into operation, establish an overall filling material source model based on the actual filling situation; Step S2. The gas supply system provides air and fuel to the porous media combustion unit for ignition and combustion; Step S3. Thermocouples measure the temperature at different locations within the porous medium combustion unit. The measured temperatures are recorded by a temperature monitor to monitor the real-time temperature. Step S4. A high-speed camera records and captures images in real time to monitor the breakage rate of the outer layer of the porous media combustion unit and the discoloration of the catalyst-loaded packing. Step S5. (1) Abnormal temperature in the region, (2) More than 20% of the external packing is observed to be damaged, (3) More than 20% of the externally supported catalyst packing is observed to be discolored; When any of the above abnormalities are found, the temperature and morphology of the cross-sections at different heights inside the porous media combustion unit are detected by a detection rod. Step S6. The results from the high-speed camera and the detection rod are transmitted to the image analyzer to analyze the breakage rate and discoloration rate. When the breakage rate or discoloration rate exceeds 20%, the air intake is stopped and the combustion is interrupted. Step S7. The product is transferred to the product recovery chamber through the high-temperature flue gas collection pipe, where the product is analyzed by the product analyzer and the quality of different products is recorded. Step S8. After the temperature drops to room temperature, use a porous media extractor with a variable diameter screen to remove all the packing material. Pass them through screens of different diameters to retain intact packing material and remove broken packing material.

8. The detection method of a multi-element detection system for a packed bed structure under a high-temperature combustion atmosphere according to claim 7, characterized in that, Step S6 specifically includes: The detection results from the high-speed camera and the detection rod are jointly transmitted to the image analyzer. Based on the target object detection model, target detection is performed on the image to be identified, and a target detection box is obtained. The area where the target detection box is located is determined as the main body area in the image to be identified. Then, it is binarized to remove the background and extract the target object, resulting in a two-dimensional image. The shape processing module extracts its boundary to obtain object boundary map A. Then, based on the coordinates of the sampling position, the corresponding position in the source model is located to obtain the corresponding object boundary map B. A and B are shape matched. If the match fails, the filling material is considered broken. At the same time, the color processing module separates the binarized image using the Otsu method and spot detection threshold. By selecting appropriate shape parameters through binarization segmentation threshold, a color-changing area with obvious contrast is obtained and marked. The area of ​​the color-changing area is calculated and compared with the area of ​​the overall filling material. The analysis results of the two modules are transmitted to the intelligent control terminal. When the breakage rate or color-changing rate exceeds 20%, the air intake is stopped and combustion is interrupted.

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