Soil indirect thermal desorption high-temperature dust removal flue gas purification equipment

Abstract

The utility model belongs to the technical field of soil thermal desorption, and particularly relates to soil indirect thermal desorption high-temperature dust removal flue gas purification equipment which comprises a purification tank, an air inlet is formed in the side wall of the purification tank, a placement plate is fixedly connected to the inner side wall of the purification tank, and a filter pipe is installed in the middle of the placement plate. Through the arrangement of the purification tank and the air inlet, heated indirect thermal desorption gas can be conveyed into the filter pipe for dust removal treatment, the ash storage box mainly comprises Al2O3 and SiO2, the porosity of the ceramic filter pipe is larger than or equal to 80%, the aperture is smaller than or equal to 1 micron of the purification tank, the dust removal efficiency is 99% or above, the high-temperature-resistant stainless steel shell is combined, high-temperature thermal desorption gas at the temperature of 350-600 DEG C can be tolerated, and the service life of the filter pipe is prolonged. Meanwhile, the dust content in the waste gas is reduced to be smaller than or equal to 30 mg / m < 3 >, the flue gas subjected to dust removal can be introduced into a subsequent treatment unit through the gas outlet, the flue gas entering the gas outlet can be pretreated and cooled through the arrangement of the cooling assembly, and environmental pollution caused when the soil indirect thermal desorption high-temperature dust removal flue gas purification equipment is used for purification is reduced.

Description

Technical Field

[0001] This utility model relates to the field of soil thermal desorption technology, specifically a soil indirect thermal desorption high-temperature dust removal and flue gas purification equipment. Background Technology

[0002] Currently, the industrial-scale applications of soil thermal desorption include collection and destruction methods. Collection methods (such as condensation) can be used for off-site treatment; destruction methods require immediate treatment after soil thermal desorption occurs. Direct heating thermal desorption technology involves direct contact between the heat source and the contaminated soil, resulting in good heating effect and high thermal energy utilization. However, this technology produces a large volume of exhaust gas with low pollutant concentrations, thus destruction methods are often used. Indirect heating thermal desorption technology requires first heating the thermal separation system, which then transfers heat to the contaminated soil. Therefore, its thermal efficiency is lower than direct heating thermal desorption technology, but it produces a smaller volume of exhaust gas with higher pollutant concentrations. Therefore, collection methods are frequently used, although destruction methods are also employed in some cases.

[0003] Soil thermal desorption mainly involves indirectly or directly heating the soil to volatilize pollutants into gaseous gases, which then react with soil moisture to form thermal desorption gas. In addition to moisture and pollutants, the main components of the thermal desorption tail gas include dust. In China, most treatment methods involve collection. Currently, the company's existing external heating rotary indirect thermal desorption and direct thermal desorption equipment both employ rapid cooling and activated carbon adsorption for flue gas absorption.

[0004] The commonly used thermal desorption gas treatment method of "circulating water spray cooling + activated carbon adsorption" is difficult to solve the problem of a large amount of dust in the exhaust gas. As a result, most of the dust is washed by the spray water and carried into the aqueous phase, which can easily cause pipe blockage and generate a large amount of secondary hazardous sludge, causing secondary pollution.

[0005] Therefore, this utility model provides a soil indirect thermal desorption high-temperature dust removal flue gas purification equipment. Utility Model Content

[0006] The purpose of this invention is to overcome the defects in the existing technology and provide a soil indirect thermal desorption high-temperature dust removal flue gas purification equipment.

[0007] To achieve the above objectives, the technical solution of this utility model is to design a soil indirect thermal desorption high-temperature dust removal flue gas purification equipment, including a purification tank. The side wall of the purification tank has an air inlet. A placement plate is fixed to the inner side wall of the purification tank. Filter tubes are installed in the middle of the placement plate, and the filter tubes are evenly distributed in the middle of the placement plate. An air outlet is provided on the side wall of the purification tank, located above the filter tubes. A compressed air tank connecting pipe is connected to the side wall of the purification tank. Venturi tubes are installed at the bottom of the compressed air tank connecting pipe, and the Venturi tubes are evenly distributed at the bottom of the compressed air tank connecting pipe. Each group of Venturi tubes... The venturi tubes correspond to the filter tubes. A cooling assembly is fixed to the outer wall of the purification tank. A sliding dust collection assembly is provided on the side wall of the purification tank. The heated indirect thermal desorption gas can be sent into the filter tube for dust removal through the purification tank and the air inlet. Because the main components of the ash storage box are Al2O3 and SiO2, this ceramic filter tube has a porosity of ≥80%, a pore size ≤1μm, and a dust removal efficiency of ≥99%. Combined with a high-temperature resistant stainless steel shell, it can withstand high-temperature thermal desorption gas of 350℃~600℃, while reducing the dust content in the exhaust gas to ≤30mg / m3. The dust-removed flue gas is introduced into the subsequent treatment unit through the air outlet. The cooling assembly can pre-treat and cool the flue gas entering the air outlet. The compressed gas tank connecting pipe and the venturi tube can use compressed gas to blow the dust and other materials generated during the entire filter tube dust removal process into the dust collection assembly for collection and treatment, reducing environmental pollution during the purification of a soil indirect thermal desorption high-temperature dust removal flue gas purification equipment.

[0008] A further preferred technical solution is that the cooling component includes a cold source box, the outer wall of the purification tank is fixedly connected to the cold source box, the output end of the cold source box is connected to a cooling pipe, the cooling pipes are evenly distributed on the side wall of the cold source box, and each group of cooling pipes passes through the middle of the air outlet. The arrangement of the cold source box and the cooling pipes can cool and reduce the temperature of the flue gas passing through the inside of the air outlet, further enhancing the flue gas treatment cooling effect of a soil indirect thermal desorption high-temperature dust removal flue gas purification equipment.

[0009] A further preferred technical solution includes a dust collection box, with the dust collection box slidably fitted to the side wall of the purification tank. The dust collection boxes are evenly distributed on the side wall of the purification tank. A support frame is fixed to the inner side wall of the purification tank, and the support frame is evenly distributed on the inner side wall of the purification tank. The support frame is located below the dust collection box. The dust collection box can collect the dust cleaned by the compressed gas, and the support frame can support the bottom of the dust collection box, further enhancing the dust collection effect of the soil indirect thermal desorption high-temperature dust removal flue gas purification equipment.

[0010] A further preferred technical solution is that the bottom of the ash storage box is provided with a sliding groove, which is evenly distributed at the bottom of the ash storage box, and the top of the support frame is provided with a rotating sliding rail, which is evenly distributed at the top of the support frame. The sliding groove and the sliding rail are in sliding engagement. By setting the sliding groove and the sliding rail, it is easier to pull out and push the ash storage box, which further enhances the portability of the soil indirect thermal desorption high-temperature dust removal flue gas purification equipment.

[0011] A further preferred technical solution is that a fixing rod is fixedly connected to the inner side wall of the purification tank, and a guide plate is installed on the side wall of the fixing rod. The setting of the fixing rod and the guide plate can guide the dust blown down by the compressed gas, so that the dust can enter the ash storage box better, reduce the accumulation of dust at the bottom of the inner side wall of the purification tank, and further enhance the dust guiding effect of a soil indirect thermal desorption high-temperature dust removal flue gas purification equipment.

[0012] A further preferred technical solution includes a connecting collar fitted on the outer wall of the filter tube, the connecting collar being in sliding fit with the side wall of the purification tank, a stabilizing plate being fixedly connected to the side wall of the connecting collar, a telescopic rod being fixedly connected to the side wall of the stabilizing plate, the telescopic rod being fixedly connected to the outer wall of the purification tank, and a first spring fitted on the side wall of the telescopic rod. The combination of the connecting collar, the stabilizing plate, and the first spring allows for the reset and stabilization of the filter tube after it has undergone compressed gas cleaning, further enhancing the reset and stabilization effect of a soil indirect thermal desorption high-temperature dust removal flue gas purification equipment.

[0013] A further preferred technical solution includes a fixed base fixed to the outer wall of the purification tank, a rotating seat with rotatable engagement on the side wall of the fixed base, a striking plate fixed to the top of the rotating seat, a pull rope fixed to the side wall of the striking plate, the pull rope having a sliding engagement with the fixed base, and a second spring fixed to the side wall of the striking plate. The second spring is fixed to the outer wall of the purification tank. By using the pull rope, the rotatable engagement between the fixed base and the rotating seat allows the striking plate to strike the stabilizing plate, shaking off the dust accumulated on the surface of the connecting collar. The second spring allows the striking plate to be reset, further reducing dust accumulation in this soil indirect thermal desorption high-temperature dust removal flue gas purification equipment.

[0014] A further preferred technical solution includes a first thermometer fixedly connected to the outer wall of the purification tank, with the detection end of the first thermometer connected to the inside of the purification tank; and a second thermometer fixedly connected to the outer wall of the purification tank, with the detection end of the second thermometer located at the end of the air outlet. The first and second thermometers can be used to detect the temperature of the gas entering and exiting the purification tank, facilitating subsequent data collection and comparison, and further enhancing the temperature detection effect of a soil indirect thermal desorption high-temperature dust removal flue gas purification equipment.

[0015] The advantages and beneficial effects of this utility model are as follows: 1. The soil indirect thermal desorption high-temperature dust removal flue gas purification equipment described in this utility model can send the heated indirect thermal desorption gas into the filter tube for dust removal treatment through the setting of the purification tank and the air inlet. Because the main components of the ash storage box are Al2O3 and SiO2, the porosity of this ceramic filter tube is ≥80%, the pore size is ≤1um of the purification tank, and the dust removal efficiency is over 99%. Combined with the high-temperature resistant stainless steel shell, it can withstand high-temperature thermal desorption gas of 350℃~600℃, and at the same time reduce the dust content in the exhaust gas to ≤30mg / m3. The dust-removed flue gas will be introduced into the subsequent treatment unit through the air outlet. The cooling component can pre-treat and cool the flue gas entering the air outlet. The compressed gas tank connecting pipe and the venturi tube can use compressed gas to blow the dust and other items generated during the dust removal process of the entire filter tube into the dust collection component for collection and treatment, thereby reducing the environmental pollution during the purification process of the soil indirect thermal desorption high-temperature dust removal flue gas purification equipment.

[0016] 2. The soil indirect thermal desorption high-temperature dust removal flue gas purification equipment of this utility model can cool and reduce the temperature of the flue gas passing through the outlet by setting up a cold source box and cooling pipe, which further enhances the flue gas treatment cooling effect of the soil indirect thermal desorption high-temperature dust removal flue gas purification equipment. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is a side view of the present invention;

[0019] Figure 3 This is a schematic diagram of the fixing rod structure in this utility model;

[0020] Figure 4 This is a schematic diagram of the rotating seat structure in this utility model;

[0021] Figure 5 This is a schematic diagram of the pulley structure in this utility model.

[0022] In the diagram: 1. Purification tank; 11. Air inlet; 12. Placement plate; 13. Filter tube; 14. Air outlet; 15. Compressed air tank connecting pipe; 16. Venturi tube; 2. Cold source box; 21. Cooling pipe; 3. Ash storage box; 31. Support frame; 4. Slide groove; 41. Slide rail; 5. Fixing rod; 51. Guide plate; 6. Connecting collar; 61. Stabilizing plate; 62. Telescopic rod; 63. First spring; 7. Fixed seat; 71. Rotating seat; 72. Striking plate; 73. Pull rope; 74. Second spring; 8. First thermometer; 81. Second thermometer. Detailed Implementation

[0023] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0024] like Figures 1 to 5 As shown in the figure, a soil indirect thermal desorption high-temperature dust removal flue gas purification equipment according to an embodiment of the present invention includes a purification tank 1. An air inlet 11 is provided on the side wall of the purification tank 1. A placement plate 12 is fixedly connected to the inner side wall of the purification tank 1. Filter tubes 13 are installed in the middle of the placement plate 12 and are evenly distributed in the middle of the placement plate 12. An air outlet 14 is provided on the side wall of the purification tank 1 and is located above the filter tubes 13. A compressed air tank connecting pipe 15 is connected to the side wall of the purification tank 1. A Venturi tube 16 is installed at the bottom of the compressed air tank connecting pipe 15. The Venturi tubes 16 are evenly distributed at the bottom of the compressed gas tank connecting pipe 15. Each group of Venturi tubes 16 corresponds to the position of the filter tube 13. A cooling assembly is fixed to the outer wall of the purification tank 1. A sliding dust collection assembly is provided on the side wall of the purification tank 1. During operation, after the organic polluted soil undergoes desorption treatment, the indirect thermal desorption gas generated by the indirect thermal desorption soil remediation system is sent to the superheater for heating and temperature control. The temperature of the thermal desorption gas after being heated and controlled by the superheater is 350-550℃. The thermal desorption gas after being heated and controlled by the superheater is then passed through... The flue gas is fed into the purification tank 1 with high-temperature dust removal through the inlet 11. Inside the purification tank 1, the flue gas undergoes dust removal treatment through the filter tube 13. The main components of the ash storage box 3 are Al2O3 and SiO2. After dust removal, the flue gas enters the subsequent flue gas treatment unit through the outlet 14. The flue gas entering the outlet 14 can be pre-cooled by the cooling component. Compressed gas can be blown through the compressed gas tank connecting pipe 15 and the venturi tube 16 to remove the dust generated in the process. Objects are collected and processed inside the dust collection assembly. The heated indirect thermal desorption gas is sent to the filter tube 13 for dust removal through the purification tank 1 and the air inlet 11. Since the main components of the ash storage box 3 are Al2O3 and SiO2, this ceramic filter tube has a porosity of ≥80%, a pore size ≤1um, and a dust removal efficiency of ≥99%. Combined with a high-temperature resistant stainless steel shell, it can withstand high-temperature thermal desorption gas of 350℃~600℃, while reducing the dust content in the exhaust gas to ≤30mg / m3. The dust-removed flue gas is introduced into the subsequent treatment unit through the air outlet 14. The flue gas entering the air outlet 14 can be pre-treated and cooled through the cooling assembly. The compressed gas tank connecting pipe 15 and the venturi tube 16 can use compressed gas to blow the dust and other items generated during the dust removal process of the filter tube 13 into the dust collection assembly for collection and treatment, reducing the environmental pollution during the purification of a soil indirect thermal desorption high-temperature dust removal flue gas purification equipment.

[0025] like Figures 1 to 3As shown, the cooling assembly includes a cold source box 2. The cold source box 2 is fixed to the outer wall of the purification tank 1. The output end of the cold source box 2 is connected to a cooling pipe 21. The cooling pipes 21 are evenly distributed on the side wall of the cold source box 2. Each set of cooling pipes 21 passes through the middle of the outlet 14. During operation, the flue gas passing through the outlet 14 can be cooled by the cold source box 2 and the cooling pipes 21, making it easier to cool down the flue gas when it enters the subsequent processing unit. The arrangement of the cold source box 2 and the cooling pipes 21 can cool down the flue gas passing through the outlet 14, further enhancing the flue gas treatment cooling effect of a soil indirect thermal desorption high-temperature dust removal flue gas purification equipment.

[0026] like Figures 1 to 5 As shown, the dust collection assembly includes a dust collection box 3. The dust collection box 3 is slidably fitted on the side wall of the purification tank 1. The dust collection boxes 3 are evenly distributed on the side wall of the purification tank 1. A support frame 31 is fixedly connected to the inner side wall of the purification tank 1. The support frame 31 is evenly distributed on the inner side wall of the purification tank 1 and is located below the dust collection box 3. During operation, the dust collected by the compressed gas blown out by the compressed gas tank connecting pipe 15 and the venturi tube 16 can be collected through the dust collection box 3. The support frame 31 can support the dust collection box 3. The dust collection box 3 can collect the dust cleaned by the compressed gas. The support frame 31 can support the bottom of the dust collection box 3, further enhancing the dust collection effect of a soil indirect thermal desorption high-temperature dust removal flue gas purification equipment.

[0027] like Figure 5 As shown, the bottom of the ash storage box 3 is provided with a sliding groove 4, which is evenly distributed at the bottom of the ash storage box 3. The top of the support frame 31 is provided with a rotating sliding rail 41, which is evenly distributed at the top of the support frame 31. The sliding groove 4 and the sliding rail 41 are in sliding engagement. During operation, the sliding groove 4 and the sliding rail 41 make it easier and smoother to pull out the ash storage box 3. The setting of the sliding groove 4 and the sliding rail 41 makes it easier to pull out and push in the ash storage box 3, further enhancing the portability of the soil indirect thermal desorption high-temperature dust removal flue gas purification equipment.

[0028] like Figure 3 As shown, a fixing rod 5 is fixedly connected to the inner wall of the purification tank 1, and a guide plate 51 is installed on the side wall of the fixing rod 5. During operation, the dust blown down by the compressed gas can be guided by the fixing rod 5 and the guide plate 51, reducing the dust from scattering outside the ash storage box 3 and reducing the accumulation of dust at the bottom of the inner wall of the purification tank 1. The setting of the fixing rod 5 and the guide plate 51 can guide the dust blown down by the compressed gas, allowing the dust to enter the ash storage box 3 better, reducing the accumulation of dust at the bottom of the inner wall of the purification tank 1, and further enhancing the dust guiding effect of a soil indirect thermal desorption high-temperature dust removal flue gas purification equipment.

[0029] like Figures 3 to 4As shown, a connecting collar 6 is fitted on the outer wall of the filter tube 13. The connecting collar 6 is in sliding fit with the side wall of the purification tank 1. A stabilizing plate 61 is fixedly connected to the side wall of the connecting collar 6. A telescopic rod 62 is fixedly connected to the side wall of the stabilizing plate 61. The telescopic rod 62 is fixedly connected to the outer wall of the purification tank 1. A first spring 63 is fitted on the side wall of the telescopic rod 62. During operation, the connecting collar 6 can stabilize the filter tube 13 when it swings while being cleaned by compressed gas. The stabilizing plate 61, the telescopic rod 62 and the first spring 63 can reset the swinging filter tube 13. The setting of the connecting collar 6, the stabilizing plate 61 and the first spring 63 can reset and stabilize the swinging of the filter tube 13 after being cleaned by compressed gas, further enhancing the reset and stabilization effect of a soil indirect thermal desorption high-temperature dust removal flue gas purification equipment.

[0030] like Figures 1 to 5 As shown, a fixed base 7 is fixed to the outer wall of the purification tank 1. A rotating base 71 with rotatable engagement is provided on the side wall of the fixed base 7. A striking plate 72 is fixed to the top of the rotating base 71. A pull rope 73 is fixed to the side wall of the striking plate 72. The pull rope 73 and the fixed base 7 are in sliding engagement. A second spring 74 is fixed to the side wall of the striking plate 72. The second spring 74 is fixed to the outer wall of the purification tank 1. During operation, by pulling the pull rope 73, the striking plate 72 can be used to strike the stabilizing plate 61, shaking off the dust accumulated on the side wall of the connecting collar 6. The striking plate 72 can be reset by the tension of the second spring 74. After reassembly, repeated striking can be performed. The setting of the pull rope 73 allows the rotatable engagement between the fixed base 7 and the rotating base 71 to use the striking plate 72 to strike the stabilizing plate 61, shaking off the dust accumulated on the surface of the connecting collar 6. The setting of the second spring 74 can reset the striking plate 72, further reducing the dust accumulation in a soil indirect thermal desorption high-temperature dust removal flue gas purification equipment.

[0031] like Figures 1 to 3 As shown, a first thermometer 8 is fixedly connected to the outer wall of the purification tank 1, and the detection end of the first thermometer 8 is connected to the inside of the purification tank 1. A second thermometer 81 is fixedly connected to the outer wall of the purification tank 1, and the detection end of the second thermometer 81 is located at the end of the air outlet 14. During operation, the temperature of the gas entering the purification tank 1 can be detected by the first thermometer 8, and the temperature of the gas after pre-cooling treatment can be detected by the second thermometer 81. The temperature of the gas entering and exiting the purification tank 1 can be detected by the first thermometer 8 and the second thermometer 81, respectively, which facilitates subsequent data collection and comparison and further enhances the temperature detection effect of a soil indirect thermal desorption high-temperature dust removal flue gas purification equipment.

[0032] Working principle: During operation, after the organically contaminated soil undergoes desorption treatment, the indirect thermal desorption soil remediation system generates indirect thermal desorption gas, which is then fed into a superheater for heating and temperature control. The temperature of the desorbed gas after heating and temperature control is 350–550°C. This heated and controlled gas is then introduced through inlet 11 into a purification tank 1 equipped with high-temperature dust removal. Inside the purification tank 1, the flue gas undergoes dust removal treatment through filter tube 13. The ash storage box 3 primarily consists of Al2O3 and SiO2, which are then processed after dust removal. The flue gas then enters the subsequent flue gas treatment unit through outlet 14. A cooling assembly pre-cools the flue gas entering outlet 14. Compressed gas is blown through the entire filter tube 13 via compressed gas tank connection pipe 15 and venturi tube 16, collecting dust and other particles generated during the process into the dust collection assembly. The cold source box 2 and cooling pipe 21 further cool the flue gas passing through outlet 14, facilitating cooling operations as it enters the subsequent treatment unit. Ash storage... The dust collection box 3 collects dust cleaned by compressed gas blown out by the compressed gas tank connecting pipe 15 and venturi tube 16. The support frame 31 supports the dust collection box 3, and the slide groove 4 and slide rail 41 make it easier and smoother to pull out the dust collection box 3. The fixing rod 5 and guide plate 51 guide the dust blown down by the compressed gas, reducing the amount of dust scattered outside the dust collection box 3 and reducing the accumulation of dust on the bottom of the inner wall of the purification tank 1. The connecting collar 6 allows the filter tube 13 to move when it is cleaned by the compressed gas. The system is stable. The filter tube 13 can be reset after swinging by the stabilizing plate 61 and the telescopic rod 62. By pulling the pull rope 73, the stabilizing plate 61 can be struck by the striking plate 72 to shake off the dust accumulated on the side wall of the connecting collar 6. The striking plate 72 can be reset by the pulling force of the second spring 74. After the combination, it can be repeatedly struck. The temperature of the gas entering the purification tank 1 can be detected by the first thermometer 8, and the temperature of the gas after pre-cooling treatment can be detected by the second thermometer 81.

[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A soil indirect thermal desorption high-temperature dust removal flue gas purification equipment, comprising a purification tank, characterized in that: The purification tank has an air inlet on its side wall, a placement plate is fixed to the inner side wall of the purification tank, filter tubes are installed in the middle of the placement plate and are evenly distributed in the middle of the placement plate, an air outlet is provided on the side wall of the purification tank and is located above the filter tubes, a compressed air tank connecting pipe is connected to the side wall of the purification tank, a venturi tube is installed at the bottom of the compressed air tank connecting pipe and is evenly distributed at the bottom of the compressed air tank connecting pipe, each group of venturi tubes corresponds to the position of the filter tube, a cooling assembly is fixed to the outer side wall of the purification tank, and a sliding dust collection assembly is provided on the side wall of the purification tank.

2. The soil indirect thermal desorption high-temperature dust removal flue gas purification equipment according to claim 1, characterized in that: The cooling assembly includes a cold source box, which is fixed to the outer wall of the purification tank. The output end of the cold source box is connected to a cooling pipe, which is evenly distributed on the side wall of the cold source box. Each set of cooling pipes passes through the middle of the air outlet.

3. The soil indirect thermal desorption high-temperature dust removal flue gas purification equipment according to claim 1, characterized in that: The dust collection assembly includes a dust collection box. The dust collection box is slidably fitted on the side wall of the purification tank. The dust collection boxes are evenly distributed on the side wall of the purification tank. A support frame is fixed to the inner side wall of the purification tank. The support frame is evenly distributed on the inner side wall of the purification tank. The support frame is located below the dust collection box.

4. The soil indirect thermal desorption high-temperature dust removal flue gas purification equipment according to claim 3, characterized in that: The bottom of the ash storage box is provided with a sliding groove, which is evenly distributed at the bottom of the ash storage box. The top of the support frame is provided with a rotatably engaged slide rail, which is evenly distributed at the top of the support frame. The sliding groove and the slide rail are in sliding engagement.

5. The soil indirect thermal desorption high-temperature dust removal flue gas purification equipment according to claim 1, characterized in that: A fixing rod is fixed to the inner side wall of the purification tank, and a guide plate is installed on the side wall of the fixing rod.

6. The soil indirect thermal desorption high-temperature dust removal flue gas purification equipment according to claim 1, characterized in that: A connecting collar is fitted onto the outer wall of the filter tube. The connecting collar is slidably fitted onto the side wall of the purification tank. A stabilizing plate is fixedly connected to the side wall of the connecting collar. A telescopic rod is fixedly connected to the side wall of the stabilizing plate. The telescopic rod is fixedly connected to the outer wall of the purification tank. A first spring is fitted onto the side wall of the telescopic rod.

7. The soil indirect thermal desorption high-temperature dust removal flue gas purification equipment according to claim 1, characterized in that: The outer wall of the purification tank is fixedly connected to a fixed seat. The side wall of the fixed seat is provided with a rotating seat that is rotatably engaged. The top of the rotating seat is fixedly connected to a striking plate. The side wall of the striking plate is fixedly connected to a pull rope. The pull rope is slidably engaged with the fixed seat. The side wall of the striking plate is fixedly connected to a second spring. The second spring is fixedly connected to the outer wall of the purification tank.

8. The soil indirect thermal desorption high-temperature dust removal flue gas purification equipment according to claim 1, characterized in that: A first thermometer is fixed to the outer wall of the purification tank, and the detection end of the first thermometer is connected to the inside of the purification tank. A second thermometer is fixed to the outer wall of the purification tank, and the detection end of the second thermometer is located at the end of the air outlet.

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