A high-temperature flue gas radial micro-channel treatment and heat exchange integrated device

Abstract

The application discloses a high-temperature flue gas radial micro-channel treatment and heat exchange integrated device, which comprises a cylindrical section at the upper part and a conical section at the lower part. The inside of the cylindrical section is sequentially provided with an annular first porous partition ring, a porous heat exchanger and a second porous partition ring from outside to inside, so that the inside of the cylindrical section is divided into a high-temperature flue gas buffer zone between the inner wall of the cylindrical section and the first porous partition ring, a dust removal filter zone between the first porous partition ring and the porous heat exchanger, a harmful substance removal filter zone between the porous heat exchanger and the second porous partition ring and a clean gas zone in the inside of the second porous partition ring. The high-temperature flue gas radial micro-channel treatment and heat exchange integrated device realizes integration of flue gas dust removal and waste heat recovery, has a small occupied space, low process energy consumption, and the filter material after adsorption can be regenerated and utilized without secondary pollution.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of industrial high-temperature flue gas reduction treatment, in particular, it is a high-temperature flue gas radial micro-channel processing and heat exchange integrated device. BACKGROUND

[0002] In order to ensure the normal operation of the coal-fired boiler, the high-temperature flue gas needs to be purified and disposed. After removing harmful substances such as dust, carbon, sulfur, chlorine, halogen, and alkali metals, the corrosion of hydrogen chloride and other substances on the equipment at high and low temperatures can be reduced, and the application range of high-temperature flue gas can be expanded. For the efficient separation and purification of small particle size gas phase and solid phase pollutants in coal-fired exhaust gas, improving the separation precision of gas-solid micro-channels, developing separation and absorption coupling process, reducing reactor pressure drop loss, facilitating unloading to realize filter regeneration, high-temperature flue gas waste heat recovery, and meeting the demand for large-scale reactor are the technical problems to be solved at present, and also the development direction of future radial fixed bed reactors.

[0003] CN112138542A discloses a high-temperature flue gas dust removal denitration desulfurization system and method, which realizes the integration of dust removal, denitration and desulfurization, but has problems such as increased filtration energy consumption and large floor area.

[0004] CN106582467A discloses a radial micro-channel coupling reaction device, which simplifies the process flow and reduces equipment cost. However, it cannot orderly process different gas phase or solid phase pollutants, and has problems such as small filtration contact area leading to low filtration efficiency, complex internal structure, and difficult filter regeneration.

[0005] CN115537237A, CN113289432A and CN114699866A all use a particle bed as the basis for dust removal and heat exchange of high-temperature flue gas, but still have problems such as low processing efficiency, high cost, complex equipment structure and operation.

[0006] Therefore, in the process of reducing dust and harmful substances in high-temperature flue gas and recycling flue gas waste heat, problems such as low filtration efficiency, high energy consumption, large floor area, and difficult filter regeneration still need to be solved. SUMMARY

[0007] The purpose of the present application is to provide an improved high-temperature flue gas purification device to solve the above-mentioned problems existing in the prior art high-temperature flue gas purification device.

[0008] To achieve the above-mentioned purpose, the first aspect of the present application provides a high-temperature flue gas radial micro-channel processing and heat exchange integrated device, the device main body includes a cylindrical segment at the upper part and a conical segment at the lower part, wherein;

[0009] A partition is arranged above the cylindrical segment, and a plurality of high-temperature flue gas radial inlet ports are formed in the outer wall of the lower part.

[0010] The inside of the cylindrical segment is sequentially provided with an annular first porous partition ring, a porous heat exchanger and a second porous partition ring from outside to inside, so as to separate the inside of the cylindrical segment into a high-temperature flue gas buffer zone between the inner wall of the cylindrical segment and the first porous partition ring, a dust removal filter material zone between the first porous partition ring and the porous heat exchanger, a harmful substance removal filter material zone between the porous heat exchanger and the second porous partition ring, and a clean gas zone inside the second porous partition ring.

[0011] The top end of the dust removal filter material zone is provided with a dust removal filter material feeding port which penetrates through the partition plate and extends to the outside of the main body, and the bottom of the dust removal filter material zone is communicated with the conical segment, and the bottom of the conical segment is a dust removal filter material discharging port.

[0012] The top of the harmful substance removal filter material zone is provided with a harmful substance adsorbent feeding port which penetrates through the partition plate and extends to the outside of the main body, and the bottom of the harmful substance removal filter material zone is tapered to form a harmful substance adsorption product discharging port in the conical segment and penetrates out from the side of the conical segment.

[0013] The bottom of the clean gas zone is sealed, and the upper end is provided with a clean gas outlet which penetrates through the partition plate and extends to the outside of the main body.

[0014] According to the application, the heights of the plurality of high-temperature flue gas radial feeding ports are the same, and they are uniformly distributed around the outer wall of the cylindrical segment. Preferably, the number of the high-temperature flue gas radial feeding ports is two.

[0015] According to the application, the high-temperature flue gas buffer zone is communicated with the high-temperature flue gas radial feeding port.

[0016] According to the application, the porous heat exchanger is a double-layer annular cylinder, the inside of which forms a cavity, and a plurality of ventilation pipes for the flow of high-temperature flue gas are provided on the annular cylinder.

[0017] According to the preferred embodiment of the application, the inner diameter of the ventilation pipe is 1-2 mm, and the opening rate of the ventilation pipe on the annular cylinder is 14-20% according to the area of the annular cylinder of the porous heat exchanger.

[0018] Further, the cavity of the porous heat exchanger is provided with a medium flow inlet and a medium flow outlet which respectively extend to the outside of the main body through pipelines penetrating through the partition plate.

[0019] Further, the dust removal filter material discharging port is further connected with a cyclone through a pipeline, the outlet of the cyclone is connected to the dust removal filter material feeding port of the device through a pipeline, and a fan is arranged on the pipeline in front of the dust removal filter material feeding port.

[0020] Further, the harmful substance adsorption product discharge port is further connected with the cyclone through a pipeline, the outlet of the cyclone is connected with the harmful substance adsorption product inlet of the device through a pipeline, and a fan is arranged on the pipeline in front of the harmful substance adsorption product inlet.

[0021] In a second aspect, the application provides a method for treating high-temperature flue gas, which uses the above-mentioned high-temperature flue gas radial micro-channel treatment and heat exchange integrated device, and includes the following steps:

[0022] The high-temperature flue gas enters the high-temperature flue gas buffer zone from the high-temperature flue gas radial inlet of the device, and is then radially transported through the first porous partition ring to the dust removal filter material zone; in the dust removal filter material zone, the dust contained in the high-temperature flue gas is intercepted in the particle channels or on the particle surfaces of the dust removal filter material, so that gas-solid separation is realized;

[0023] After dust removal, the high-temperature flue gas enters the harmful substance removal filter material zone through the porous heat exchanger, in this process, the low-temperature medium continuously flows into the cavity of the porous heat exchanger from the medium inlet, exchanges heat with the high-temperature flue gas flowing through the air pipe of the porous heat exchanger, and then flows out from the medium outlet, so that heat energy is recycled and utilized;

[0024] In the harmful substance removal filter material zone, the high-temperature flue gas further removes the harmful gas contained therein by passing through the harmful substance removal adsorbent, and then enters the clean gas zone from the second porous partition ring, and finally is discharged from the clean gas outlet.

[0025] Further, the method further includes blowing air to the dust removal filter material inlet and the harmful substance adsorbent inlet by the fan, so that the dust removal filter material and the harmful substance adsorbent flow down from the dust removal filter material discharge port and the harmful substance adsorption product discharge port under the action of gravity and air flow, wherein:

[0026] The dust removal filter material is discharged into the cyclone to realize filter material regeneration, and the regenerated filter material is discharged from the bottom of the cyclone and then directly transported back to the dust removal filter material zone of the device;

[0027] The harmful substance adsorbent has two treatment modes:

[0028] For the adsorbent that can be regenerated by the cyclone, the harmful substance adsorbent is discharged from the harmful substance adsorbent discharge port into the cyclone, and after regeneration, is transported back to the harmful substance removal filter material zone of the device; or,

[0029] For the adsorbent that cannot be regenerated, the harmful substance adsorbent is discharged from the harmful substance adsorbent discharge port and then collected for other purposes.

[0030] The application has the following beneficial effects:

[0031] 1. The traditional heat exchanger has complex structure, large volume, is easily affected by the environment, and has high investment and maintenance costs. The porous heat exchanger used in the device of the present application can make up for these deficiencies, while greatly increasing the contact area and further improving the heat transfer efficiency.

[0032] 2. The device of the present application has improved filtration efficiency of fine particles and significantly improved heat exchange efficiency, realizes integration of flue gas dust removal and waste heat recovery, has small occupied space, and low process energy consumption.

[0033] 3. High-temperature flue gas is treated by the device of the present application, without sewage discharge and secondary pollution. The filter material after adsorption can be regenerated in the device, and can be regenerated or used for other purposes through physical action, and has strong environmental friendliness.

[0034] 4. Compared with the traditional axial flow reactor, the radial flow reactor of the present application can provide longer residence time for the fluid, has the advantages of low pressure drop, low energy consumption, high treatment capacity and easy realization of large-scale, and is especially suitable for occasions with high requirements for mixing uniformity or reaction efficiency. This structure can realize the collaborative treatment of multiple pollutants, and different adsorbents are selected for different pollutants, and the application scene is more widely. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a structure sectional view of the main body of the high-temperature flue gas radial micro-channel treatment and heat exchange integrated device.

[0036] Figure 2 It is a structure sectional view of the porous heat exchanger.

[0037] Figure 3 It is a whole schematic view of the high-temperature flue gas radial micro-channel treatment and heat exchange integrated device.

[0038] Figure 4 It is a dechlorination effect diagram of different particle sizes and different calcium-based adsorbents.

[0039] Figure number explanation: 1-cylindrical section; 2-conical section; 3-high-temperature flue gas buffer zone; 31-high-temperature flue gas radial feed port; 4-dedusting filter material zone; 41-dedusting filter material feed port; 42-dedusting filter material discharge port; 5-harmful substance removal filter material zone; 51-harmful substance adsorbent feed port; 52-harmful substance adsorption product discharge port; 6-clean gas zone; 61-clean gas outlet; 7-baffle; 71-medium flow inlet; 72-medium flow outlet; 8-first porous partition ring; 9-porous heat exchanger; 91-cavity; 92-ventilation pipe; 10-second porous partition ring; 11-cyclone; 12-fan; 13-discharge bin. DETAILED DESCRIPTION

[0040] The technical solutions of the present application will be described clearly and completely in specific embodiments in combination with the drawings. It should be understood that the described embodiments are only used to illustrate the present application, but not to limit the scope of the present application.

[0041] Example 1, high-temperature flue gas radial micro-channel processing and heat exchange integrated device

[0042] Figure 1 The structure of the high-temperature flue gas radial micro-channel processing and heat exchange integrated device of the present application is shown in the cross-sectional view. The device body is integrally formed of stainless steel lined with polytetrafluoroethylene. As shown in the figure, the device body includes a cylindrical segment 1 at the upper part and a conical segment 2 at the lower part. The upper part of the cylindrical segment 1 is provided with a partition plate 7, and a plurality of high-temperature flue gas radial inlets 31 are formed on the outer wall of the lower part. The heights of the plurality of high-temperature flue gas radial inlets 31 are the same, and they are uniformly distributed around the outer wall of the cylindrical segment 1. Preferably, the number of high-temperature flue gas radial inlets 31 is two.

[0043] Further, the inside of the cylindrical segment 1 is sequentially provided with an annular first porous partition ring 8, a porous heat exchanger 9, and a second porous partition ring 10 from outside to inside, thereby separating the inside of the cylindrical segment 1 into a high-temperature flue gas buffer zone 3 between the inside of the cylindrical segment 1 and the first porous partition ring 8, a dust removal filter zone 4 between the first porous partition ring 8 and the porous heat exchanger 9, a harmful substance removal filter zone 5 between the porous heat exchanger 9 and the second porous partition ring 10, and a clean gas zone 6 inside the second porous partition ring 10.

[0044] The high-temperature flue gas buffer zone 3 is in communication with the high-temperature flue gas radial inlet 31 for buffering high-temperature flue gas.

[0045] The top end of the dust removal filter zone 4 is provided with a dust removal filter inlet 41 which penetrates through the partition plate 7 and extends to the outside of the main body for introducing dust removal filter material. The bottom of the dust removal filter zone 4 is in communication with the conical segment 2, and the bottom of the conical segment 2 is a dust removal filter outlet 42.

[0046] The top of the harmful substance removal filter zone 5 is provided with a harmful substance adsorbent inlet 51 which penetrates through the partition plate 7 and extends to the outside of the main body for introducing harmful substance adsorbent. The bottom of the harmful substance removal filter zone 5 is tapered in the conical segment 2 to form a harmful substance adsorbent product discharge port 52 which penetrates out of the side of the conical segment 2.

[0047] The bottom of the clean gas zone 6 is sealed, and the upper end is provided with a clean gas outlet 61 which penetrates through the partition plate 7 and extends to the outside of the main body.

[0048] Further, in combination with Figure 2As shown, the porous heat exchanger 9 is a double-layer annular cylinder, the inner part of which forms a cavity 91, and a plurality of air pipes 92 for the flow of high-temperature flue gas are uniformly arranged on the annular cylinder. The cavity 91 is provided with a medium inlet 71 and a medium outlet 72, which extend to the outside of the main body through the partition plate 7 by pipelines, respectively. The medium for heat exchange enters the cavity 91 from the medium inlet 71, exchanges heat with the high-temperature flue gas flowing through the air pipe 92, and then flows out from the medium outlet 72. In this embodiment, the inner diameter of the air pipe 92 is preferably 1-2 mm; and the opening rate of the air pipe 92 on the annular cylinder is 14-20% according to the area of the annular cylinder of the porous heat exchanger 9.

[0049] Further, as shown in Figure 3 The dust removal filter material discharge port 42 is further connected to the cyclone 11 through a pipeline, the outlet of the cyclone 11 is connected to the dust removal filter material inlet port 41 of the device through a pipeline, and a fan 12 is arranged on the pipeline in front of the dust removal filter material inlet port 41, which provides power for the transportation of the dust removal filter material, so that the dust removal filter material is transported back to the dust removal filter material area 4 of the device after regeneration.

[0050] The harmful substance adsorption product discharge port 52 is also further connected to the cyclone 11 through a pipeline, the outlet of the cyclone 11 is also connected to the harmful substance adsorption product inlet port 51 of the device through a pipeline, and a fan 12 is arranged on the pipeline in front of the harmful substance adsorption product inlet port 51, which can share the fan 12 in front of the dust removal filter material inlet port 41, and provides power for the transportation of the harmful substance adsorbent, so that the harmful substance adsorbent is transported back to the harmful substance removal filter material area 5 of the device after regeneration; or for the harmful substance adsorbent that cannot be regenerated by the cyclone, it is discharged to the discharge bin 13 after the harmful substance adsorption product discharge port 52, and then collected for other purposes.

[0051] The working principle of the high-temperature flue gas radial micro-channel processing and heat exchange integrated device of the present application is as follows:

[0052] As shown in Figures 1-3 The dust removal filter material and the harmful substance adsorbent are loaded into the dust removal filter material area 4 and the harmful substance removal filter material area 5 through the dust removal filter material inlet port 41 and the harmful substance adsorbent inlet port 51, respectively. The dust removal filter material is mixed by one or more porous adsorption materials, and the particle size of the material is 1-5 mm; and the harmful substance adsorbent is selected according to the composition of the high-temperature flue gas to be treated, and the adsorbent that can react with the high-temperature flue gas is selected.

[0053] The high-temperature flue gas enters the high-temperature flue gas buffer area 3 from the high-temperature flue gas radial inlet port 31, and then is radially transported to the dust removal filter material area 4 through the first porous partition ring 8 under the push of the high-temperature flue gas subsequently entering the high-temperature flue gas buffer area 3.

[0054] The high-temperature flue gas, after entering the dust-removing filter material area 4, has the dust contained therein intercepted in the particle channels of the dust-removing filter material or on the particle surface, so as to realize gas-solid separation.

[0055] After the dust is removed, the high-temperature flue gas enters the harmful substance-removing filter material area 5 through the porous heat exchanger 9. In this process, the low-temperature medium continuously flows into the cavity 91 from the medium flow inlet 71, exchanges heat with the high-temperature flue gas flowing through the vent pipe 92, and then flows out from the medium flow outlet 72, so as to realize heat energy recovery and utilization.

[0056] The high-temperature flue gas, after further adsorption by the harmful substance-removing adsorbent in the harmful substance-removing filter material area 5, enters the clean gas area 6 from the second porous partition ring 10. According to the adsorption effects of the dust-removing filter material area 4 and the harmful substance-removing filter material area 5, by adjusting the feeding frequency of the dust-removing filter material and the harmful substance-removing adsorbent, and in combination with adjusting the gas flow, concentration, temperature and other parameters of the high-temperature flue gas by using the feeding unit, the dust-removing and harmful substance-removing efficiencies are ensured to be optimal.

[0057] After the filtration is completed, the clean gas is discharged from the clean gas outlet 61. The dust-removing filter material and the harmful substance-removing adsorbent product are blown by the fan 12 to the dust-removing filter material feeding port 41 and the harmful substance-removing adsorbent feeding port 51, and flow down from the dust-removing filter material discharging port 42 and the harmful substance-removing adsorbent discharging port 52 under the action of gravity and air flow. After the dust-removing filter material is discharged, it enters the cyclone 11 to realize filter material regeneration. The regenerated filter material is discharged from the bottom of the cyclone 11, and then can be directly conveyed back to the dust-removing filter material area 4 of the device. The harmful substance-removing adsorbent has two treatment modes: for the adsorbent that can be regenerated by the cyclone 11, it is discharged from the harmful substance-removing adsorbent discharging port 52, enters the cyclone 11, and is conveyed back to the harmful substance-removing filter material area 5 of the device after regeneration; for the adsorbent that cannot be regenerated, it is discharged from the harmful substance-removing adsorbent discharging port 52 to the discharging bin 13, and then is collected for other uses.

[0058] Example 2, Application Example

[0059] The pyrolysis gas used in this experimental example is taken from a waste treatment plant in Shanghai, and is treated by using the high-temperature flue gas radial micro-channel treatment and heat exchange integrated device of Example 1. The quartz sand with a particle size of 1-5 mm and the calcium-based adsorbent (CaO, Ca(OH)2, CaCO3) with a particle size of 1-5 mm are respectively selected as the dust-removing filter material and the harmful substance-removing adsorbent.

[0060] Before the experiment, the pyrolysis gas is pretreated and its properties are measured. The temperature of the pyrolysis gas is about 600℃, the initial dust content is 50g / Nm 3 , and the HCl concentration is 1000ppm. The pyrolysis gas composition analysis results are shown in Table 1.

[0061] Table 1: Pyrolysis gas composition analysis

[0062]

[0063] 1.1 Microchannel dust removal and dechlorination effect

[0064] High-temperature pyrolysis gas passes through the dust removal filter media zone 4 and the harmful substance removal filter media zone 5 at a speed of 0.25 m / s. Dust is intercepted on the surface or pores of the porous adsorption material, and hydrogen chloride gas is absorbed by the calcium-based adsorbent, achieving synergistic treatment of dust removal and dechlorination. The dechlorination effect of each calcium-based adsorbent is as follows: Figure 3 As shown.

[0065] Depend on Figure 3 It can be seen that the optimal particle size range for dechlorination by calcium-based adsorbents varies. Among the three calcium-based adsorbents, Ca(OH)2 has the best dechlorination effect, followed by CaO and CaCO3. Ca(OH)2 with a particle size of 0.5-1 mm has the best dechlorination effect, with a maximum adsorption capacity between 67-171 mg / g. CaCO3 has the worst dechlorination effect, as low as 1.02 mg / g. Although its absorption efficiency is similar to that of traditional granular beds, its pressure drop is 76.15% of that of traditional granular beds. Compared with traditional axial flow reactors, the radial flow reactor of this invention reduces the bed pressure drop by nearly 30% while ensuring separation efficiency, which shows that it has significant advantages in energy saving and consumption reduction.

[0066] This process can efficiently obtain adsorption products and clean gas, with the dust content in the exhaust gas being less than 10 mg / Nm³. 3 The maximum adsorption capacity reaches 171.12 mg / g.

[0067]

[0068] 1.2. Heat exchange effect of the medium

[0069] The initial temperature of the medium is 25℃, and after heat exchange with 600℃ high-temperature pyrolysis gas, the temperature rises to 512℃, with a heat exchange efficiency of over 85%.

[0070] Although embodiments of the present invention have been described above in conjunction with the accompanying drawings, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims, and all of these are within the scope of protection of the present invention.

Claims

1. A high-temperature flue gas radial microchannel treatment and heat exchange integrated device, characterized in that, The main body of the device includes an upper cylindrical section and a lower conical section, wherein; The cylindrical section is provided with a partition at the top and multiple high-temperature flue gas radial inlets on the lower outer wall; The cylindrical section is provided with annular first porous partition ring, porous heat exchanger and second porous partition ring arranged sequentially from the outside to the inside. This separates the cylindrical section into a high-temperature flue gas buffer zone between the inner wall of the cylindrical section and the first porous partition ring, a dust removal filter material zone between the first porous partition ring and the porous heat exchanger, a harmful substance removal filter material zone between the porous heat exchanger and the second porous partition ring, and a clean gas zone inside the second porous partition ring. The top of the dust removal filter material area is provided with a dust removal filter material inlet, which passes through the partition and extends to the outside of the main body. The bottom of the dust removal filter material area is connected to a conical section, and the bottom of the conical section is the dust removal filter material outlet. The top of the hazardous substance removal filter media area is provided with a hazardous substance adsorbent inlet, which passes through the partition and extends to the outside of the main body. The bottom of the hazardous substance removal filter media area gradually narrows in the conical section to form a hazardous substance adsorption product discharge port, which exits from the side of the conical section. The bottom of the clean gas zone is sealed, and a clean gas outlet is provided at the top. The clean gas outlet passes through the partition and extends to the outside of the main body.

2. The apparatus according to claim 1, characterized in that, The multiple high-temperature flue gas radial feed inlets have the same height and are evenly distributed around the outer wall of the cylindrical section.

3. The apparatus according to claim 2, characterized in that, The number of radial feed inlets for the high-temperature flue gas is two.

4. The apparatus according to claim 1, characterized in that, The porous heat exchanger is a double-layered annular cylinder with a cavity inside. Several ventilation pipes for high-temperature flue gas to pass through are evenly distributed on the annular cylinder.

5. The apparatus according to claim 4, characterized in that, The cavity of the porous heat exchanger is provided with a medium flow inlet and a medium flow outlet, which are respectively extended to the outside of the main body through pipes passing through the partition.

6. The apparatus according to claim 4, characterized in that, The inner diameter of the vent pipe is 1-2 mm; based on the area of ​​the annular cylinder of the porous heat exchanger, the opening ratio of the vent pipe on the annular cylinder is 14-20%.

7. The apparatus according to claim 1, characterized in that, The dust removal filter material outlet is further connected to a hydrocyclone via a pipeline, and the outlet of the hydrocyclone is connected to the dust removal filter material inlet of the device via a pipeline. A fan is installed on the pipeline at the front end of the dust removal filter material inlet to transport the dust removal filter material back to the dust removal filter material area of ​​the device after regeneration.

8. The apparatus according to claim 1, characterized in that, The discharge port of the harmful substance adsorption product is further connected to the hydrocyclone through a pipeline. The outlet of the hydrocyclone is connected to the inlet of the harmful substance adsorption product of the device through a pipeline, and a fan is installed on the pipeline at the front end of the inlet of the harmful substance adsorption product.

9. A method for treating high-temperature flue gas, employing the integrated device for radial microchannel treatment and heat exchange of high-temperature flue gas as described in any one of claims 1 to 8, characterized in that... Includes the following steps: High-temperature flue gas enters the high-temperature flue gas buffer zone from the high-temperature flue gas radial inlet of the device, and then is radially conveyed to the dust removal filter material zone through the first porous partition ring; in the dust removal filter material zone, the dust contained in the high-temperature flue gas is intercepted in the particle channels or on the particle surface of the dust removal filter material, thereby achieving gas-solid separation. After dust removal, the high-temperature flue gas passes through the porous heat exchanger and enters the harmful substance removal filter area. During this process, the low-temperature medium continuously flows from the medium inlet into the cavity of the porous heat exchanger, exchanges heat with the high-temperature flue gas flowing through the vent pipe of the porous heat exchanger, and then flows out from the medium outlet, realizing the recovery and utilization of heat energy. In the hazardous substance removal filter area, the high-temperature flue gas is further adsorbed and the hazardous gases contained therein are removed by the hazardous substance removal adsorbent. Then it enters the clean gas area through the second porous partition ring and is finally discharged from the clean gas outlet.

10. The processing method according to claim 9, characterized in that, It also includes blowing air into the dust collector filter media inlet and the hazardous substance adsorbent inlet using a fan, so that the dust collector filter media and the hazardous substance adsorbent flow down from the dust collector filter media outlet and the hazardous substance adsorption product discharge outlet respectively under the action of gravity and airflow, wherein: After the dust collector filter media is discharged, it enters a hydrocyclone to regenerate the filter media. The regenerated filter media is discharged from the bottom of the hydrocyclone and then directly transported back to the dust collector filter media area of ​​the device. There are two ways to treat harmful substances using adsorbents: For regenerable adsorbents that can be regenerated via a hydrocyclone, the adsorbent is discharged from the hazardous substance discharge port into the hydrocyclone, and after regeneration, it is transported back to the hazardous substance removal filter media area of ​​the unit; or... For non-renewable adsorbents, they are collected after being discharged from the hazardous substance adsorbent discharge port and used for other purposes.

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