Thermal desorption heating device for organic contaminated soil remediation

Abstract

The utility model discloses a thermal desorption heating device for organic contaminated soil remediation, which comprises a thermal desorption heating device body, the thermal desorption heating device body comprises a heat source generating device, a thermal desorption device and a control box, the heat source generating device is fixedly connected with the thermal desorption device, and the control box is provided with a fuel inlet. Through the arrangement of a series of structures, exhausted waste gas can be filtered, adsorbed and purified for multiple times, the exhausted waste gas can be detected, and the qualified waste gas is directly guided and exhausted into the thermal desorption device for secondary utilization of heat, so that waste caused by direct emission of the heat is reduced; waste gas detected to be unqualified is guided and discharged into the activated carbon filler for secondary adsorption and purification, pollution caused by direct discharge of the unqualified waste gas is avoided, in addition, the first filter screen, the second filter screen and the activated carbon filler can be cleaned or replaced regularly and quickly, and convenience is brought to personnel to use.

Description

Technical Field

[0001] The utility model relates to the technical field of organic contaminated soil remediation, in particular to a thermal degassing and heating device for organic contaminated soil remediation. Background Art

[0002] Thermal desorption technology is a commonly used organic contaminated soil remediation technology. Its principle refers to the process of heating the organic pollutants in the soil to a sufficient temperature through direct or indirect heat exchange under vacuum conditions or when a carrier gas is introduced, so that the organic pollutants can be volatilized or separated from the contaminated medium and enter the gas treatment system. Thermal desorption is a physical separation process that converts pollutants from one phase to another. During the remediation process, there is no destruction of organic pollutants. By controlling the temperature of the thermal desorption system and the residence time of the contaminated soil, the pollutants can be selectively volatilized without chemical reactions such as oxidation and decomposition. The existing thermal desorption system for organic contaminated soil mainly evaporates and separates organic pollutants by directly heating the contaminated soil, and then treats the separated organic pollutants. In addition, the existing thermal desorption technology generally uses a rotary kiln as a heating equipment. During the operation of the rotary kiln, the equipment has a high failure rate, high energy consumption, inconvenient use, low efficiency, and time. The heat generated by the combustion of the fuel is used to evaporate and vaporize the soil around the outer wall of the heating tube and the moisture and harmful organic matter in the soil through radiation and conduction, and finally realize the physical process of separation from the soil, thereby realizing the harmless treatment of the organic contaminated soil; the thermal desorption and heating equipment also has the advantages of high efficiency, low energy consumption, and resource saving, while avoiding secondary pollution to the environment during the treatment process;

[0003] The above-mentioned patent discloses a thermal desorption and heating device for the remediation of organic contaminated soil. It cooperates with a control box, a thermal desorption device, a heat source generating device and a flue gas exhaust device to perform harmless treatment and remediation of organic contaminated soil. However, it still has some shortcomings during use: 1. After the flue gas exhaust device adsorbs and purifies the discharged exhaust gas, the exhaust gas is directly discharged. Since there is a lot of heat in the exhaust gas, its direct discharge method causes heat waste, and there is a lack of a structure for detecting the gas before the exhaust gas is discharged. If the adsorption and purification treatment is not in place and it is directly discharged, it will still cause pollution to the external environment; 2. The activated carbon adsorption filler of the flue gas exhaust device needs to be replaced after a period of use. The activated carbon adsorption filler is filled inside the adsorber, and it is impossible to remind personnel regularly and perform quick replacement work; Based on the above situation, the above-mentioned patent is improved, and therefore the present application proposes a thermal desorption and heating device for the remediation of organic contaminated soil. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a thermal decomposition and heating device for remediation of organic contaminated soil.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A thermal decomposition and heating device for remediating organic contaminated soil comprises a thermal decomposition and heating device body, the thermal decomposition and heating device body comprises a heat source generating device, a thermal desorption device and a control box, the heat source generating device is connected and fixed to the thermal desorption device, the control box is installed on the top of the thermal desorption device, a fuel inlet is provided on the control box, and the principle of performing thermal decomposition and heating to remediate the soil by cooperating with the heat source generating device, the thermal desorption device, the control box and the fuel inlet is the existing technology and will not be elaborated here in detail, the left side of the heat source generating device is connected and fixed with a flue gas exhaust mechanism, the flue gas exhaust mechanism comprises an L-shaped exhaust pipe connected and fixed to the left side of the heat source generating device, the top end of the L-shaped exhaust pipe is connected and fixed with a filter box with an opening at the top, the L-shaped exhaust pipe is used to discharge the exhaust gas inside the heat source generating device into the filter box, a multi-stage filter adsorption assembly is installed in the filter box, the multi-stage filter adsorption assembly is used to filter, adsorb and purify harmful substances in the exhaust gas, and the top of the filter box is magnetically fixed A cover plate is fixed, the bottom of the cover plate is fixedly installed on the top of the multi-stage filter adsorption assembly, the cover plate is used to block the top of the filter box, the right top of the filter box is connected and fixed with an exhaust gas detection guide assembly, the exhaust gas detection guide assembly is connected to the right side of the multi-stage filter adsorption assembly, the exhaust gas detection guide assembly is used to detect and guide the purified exhaust gas, the left top of the thermal desorption device is connected and fixed with a first connecting pipe with a blocking structure on the left side, the top of the first connecting pipe is connected and fixed with two first one-way valves with outlets at the bottom, the exhaust gas detection guide assembly is connected and fixed to the top of the first one-way valve on the left, and the top of the first one-way valve on the right is connected and fixed with an air inlet. The setting of the two first one-way valves can prevent air from entering the exhaust gas detection guide assembly and prevent exhaust gas from being discharged to the outside through the air inlet. A timer reminder alarm is fixedly connected to the left side of the filter box. The timer reminder alarm is used to remind personnel at regular intervals. A PLC controller is installed in the control box, and the PLC controller is electrically connected to the exhaust gas detection guide assembly.

[0007] Preferably, the multi-stage filtration and adsorption assembly includes a box-shaped filter that is movably mounted in the filter box and has an opening at the bottom. A first filter is magnetically fixed to the bottom of the box-shaped filter. The top of the first filter is fixedly connected to a second filter that is movably mounted in the box-shaped filter. The first filter and the second filter are used for secondary filtration of the discharged exhaust gas. The top of the second filter is provided with an activated carbon filler filled in the box-shaped filter. The activated carbon filler is used for adsorbing and purifying harmful substances in the exhaust gas. A circular support frame is fixedly connected between the inner walls of both sides of the filter box. The top of the circular support frame is movably in contact with the bottom of the first filter. The circular support frame is used to support the first filter. The bottom of the first filter is fixedly connected to a first pull ring. The top of the box-shaped filter is fixedly installed on the bottom of the cover plate.

[0008] Preferably, the exhaust gas detection and exhaust assembly includes an L-shaped tube connected and fixed to the top right side of the filter box, the left end of the L-shaped tube is located above the box-shaped filter, the bottom end of the L-shaped tube is connected and fixed to a first solenoid valve, the bottom of the first solenoid valve is connected and fixed to the top of the first one-way valve on the left side, the top of the L-shaped tube is fixedly connected to a CO concentration sensor, the detection end of the CO concentration sensor extends into the L-shaped tube, and the CO concentration sensor is used to detect exhaust gas inside the L-shaped tube, the left bottom end of the L-shaped tube is connected and fixed to a second solenoid valve, the left side of the second solenoid valve is connected and fixed to a second connecting pipe, the opening and closing of the second connecting pipe is controlled by the second solenoid valve, the left end of the second connecting pipe is in movably contact with the right side of the box-shaped filter, the filter box is fixedly sleeved on the second connecting pipe, a second one-way valve with an outlet on the left side is embedded and fixed on the right inner wall of the box-shaped filter, the right side of the second one-way valve is aligned and connected to the left end of the second connecting pipe, the provision of the second one-way valve can prevent exhaust gas from directly entering the second connecting pipe, and the CO concentration sensor, the first solenoid valve, and the second solenoid valve are all electrically connected to the PLC controller.

[0009] Preferably, two first grooves are provided on both sides of the bottom of the box-shaped filter screen, two first magnets are fixedly connected to both sides of the top of the first filter screen, a second magnet is fixedly connected to the top inner wall of the first groove, the first magnet is movably sleeved in the corresponding groove and adsorbed with the second magnet, the first magnet and the second magnet can be used to quickly fix the first filter screen, the first filter screen and the second filter screen are both provided with filter screen holes, and the filter screen holes on the first filter screen are larger than the filter screen holes on the second filter screen.

[0010] Preferably, a connecting rod is fixedly connected between the top of the box-shaped filter and the bottom of the cover plate, and a U-shaped handle is fixedly connected to the top of the cover plate, and the cover plate can be pulled by the U-shaped handle.

[0011] Preferably, the front side, rear side, left side and right side of the box-shaped filter screen are in active contact with the front inner wall, rear inner wall, left inner wall and right inner wall of the filter box respectively.

[0012] Preferably, a second groove is provided on both sides of the top of the filter box, a third magnet is fixedly connected to the bottom inner wall of the second groove, and a fourth magnet is fixedly connected to both sides of the bottom of the cover plate. The fourth magnet is movably mounted in the corresponding second groove and adsorbed with the third magnet, and the cover plate is quickly fixed by the third magnet and the fourth magnet.

[0013] Compared with the existing technology, the beneficial effects of the utility model are:

[0014] 1. Through the setting of multi-stage filtration and adsorption components, the exhaust gas can be filtered and adsorbed and purified multiple times during the soil remediation process, thereby improving the filtration and adsorption effect;

[0015] 2. The exhaust gas detection and drainage assembly is provided to detect the CO concentration in the exhausted exhaust gas. At the same time, in conjunction with the first one-way valve and the first connecting pipe, the exhaust gas can be directly drained into the thermal desorption device when the test is qualified, directly providing a heat source for the thermal desorption device, and its heat can be reused to reduce the waste caused by direct heat discharge. In addition, when the test is unqualified, the exhaust gas can be drained into the multi-stage filtration and adsorption assembly for secondary adsorption purification to avoid pollution caused by direct discharge of unqualified exhaust gas.

[0016] 3. The timing alarm clock and the multi-stage filtration adsorption component can remind personnel when the cleaning time is reached. Personnel can simply pull out the first filter, the second filter and the box filter to clean and replace them as well as the activated carbon filler. The simple pull and disassembly and cleaning method can achieve the purpose of regular and rapid cleaning.

[0017] The utility model is capable of filtering and adsorbing the discharged waste gas multiple times through the arrangement of a series of structures, and can detect the discharged waste gas, and directly guide the qualified waste gas to the thermal desorption device for secondary utilization of its heat, thereby reducing the waste caused by direct discharge of heat, and guide the unqualified waste gas to the activated carbon filler for secondary adsorption purification, thereby avoiding the pollution caused by the direct discharge of unqualified waste gas. In addition, the first filter screen, the second filter screen and the activated carbon filler can be cleaned or replaced quickly and regularly, which is convenient for personnel to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of a thermal degassing and heating device for remediation of organic contaminated soil proposed in the utility model;

[0019] Figure 2 This is a schematic diagram of the main cross-sectional structure of a thermal degassing and heating device for remediation of organic contaminated soil proposed in the present invention;

[0020] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of part A.

[0021] In the figure: 100, control box; 101, thermal desorption device; 102, heat source generating device; 103, fuel inlet; 104, air inlet; 105, L-shaped exhaust pipe; 1, filter box; 2, first connecting pipe; 3, L-shaped pipe; 4, CO concentration sensor; 5, first solenoid valve; 6, first one-way valve; 7, second connecting pipe; 8, second solenoid valve; 9, box-shaped filter; 10, timed reminder alarm clock; 11, first filter; 12, second one-way valve; 13, second filter; 14, circular support frame; 15, cover plate; 16, connecting rod. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Reference Figure 1-3 , a thermal desorption heating device for remediation of organic contaminated soil, including a thermal desorption heating device body, the thermal desorption heating device body includes a heat source generating device 102, a thermal desorption device 101 and a control box 100, the control box 100 is installed on the top of the thermal desorption device 101, the heat source generating device 102 is connected and fixed to the thermal desorption device 101, and a fuel inlet 103 is provided on the control box 100. The principle of performing thermal desorption heating to repair the soil by cooperating with the heat source generating device 102, the thermal desorption device 101, the control box 100 and the fuel inlet 103 is the existing technology and will not be elaborated here in detail. The left side of the heat source generating device 102 is connected and fixed with a flue gas exhaust mechanism, and the flue gas exhaust mechanism includes an L-shaped exhaust pipe 105 connected and fixed to the left side of the heat source generating device 102, the top end of the L-shaped exhaust pipe 105 is connected and fixed with a filter box 1 with an opening at the top, and the L-shaped exhaust pipe 105 is used to discharge the exhaust gas inside the heat source generating device 102 into the filter box 1;

[0024] A multi-stage filter adsorption assembly is installed in the filter box 1. A cover plate 15 is fixed to the top of the filter box 1 by magnetic attraction, wherein a second groove is provided on both sides of the top of the filter box 1. A third magnet is fixedly connected to the bottom inner wall of the second groove. A fourth magnet is fixedly connected to both sides of the bottom of the cover plate 15. The fourth magnet is movably sleeved in the corresponding second groove and adsorbed with the third magnet. The cover plate 15 is quickly fixed by the third and fourth magnets. A U-shaped handle is fixedly connected to the top of the cover plate 15, and the cover plate 15 can be pulled by the U-shaped handle. The bottom of the cover plate 15 It is fixedly installed on the top of the multi-stage filter adsorption component, and the multi-stage filter adsorption component includes a box-shaped filter 9 that is movably sleeved in the filter box 1 and has an opening at the bottom, wherein the front side, rear side, left side and right side of the box-shaped filter 9 are in movably contact with the front inner wall, rear inner wall, left inner wall and right inner wall of the filter box 1 respectively, and a first filter 11 is fixed to the bottom of the box-shaped filter 9 by magnetic attraction, wherein two first grooves are provided on both sides of the bottom of the box-shaped filter 9, and two first magnets are fixedly connected to both sides of the top of the first filter 11, and a first magnet is fixedly connected to the top inner wall of the first groove. Two magnets, the first magnet is movably set in the corresponding groove and adsorbed with the second magnet, the first magnet and the second magnet can be used to quickly fix the first filter 11, the top of the first filter 11 is fixedly connected with the second filter 13 movably set in the box-shaped filter 9, the first filter 11 and the second filter 13 are used for secondary filtration of the discharged exhaust gas, wherein the first filter 11 and the second filter 13 are both provided with filter holes, the filter holes on the first filter 11 are larger than the filter holes on the second filter 13, and the top of the second filter 13 is provided with The activated carbon filler filled in the box-shaped filter 9 is used to adsorb and purify harmful substances in the exhaust gas. A circular support frame 14 is fixedly connected between the inner walls of the two sides of the filter box 1. The top of the circular support frame 14 is in active contact with the bottom of the first filter 11. The circular support frame 14 is used to support the first filter 11. The bottom of the first filter 11 is fixedly connected to a first pull ring. A connecting rod 16 is fixedly connected between the top of the box-shaped filter 9 and the bottom of the cover plate 15. The connection between the box-shaped filter 9 and the cover plate 15 is achieved through the connecting rod 16;

[0025] The top right side of the filter box 1 is connected and fixed with an exhaust gas detection guide assembly, which includes an L-shaped tube 3 connected and fixed to the top right side of the filter box 1, wherein the right inner wall of the filter box 1 is provided with a first mounting hole for fixing the L-shaped tube 3, the left end of the L-shaped tube 3 is located above the box-shaped filter 9, the bottom end of the L-shaped tube 3 is connected and fixed with a first solenoid valve 5, the top of the L-shaped tube 3 is fixedly connected with a CO concentration sensor 4, the detection end of the CO concentration sensor 4 extends into the L-shaped tube 3, the CO concentration sensor 4 is used to detect the exhaust gas inside the L-shaped tube 3, and its detection principle is the existing technology, which will not be elaborated here. The bottom left side of the L-shaped tube 3 A second solenoid valve 8 is connected and fixed, and a second connecting pipe 7 is connected and fixed to the left side of the second solenoid valve 8. The opening and closing of the second connecting pipe 7 is controlled by the second solenoid valve 8. The left end of the second connecting pipe 7 is movably contacted with the right side of the box-shaped filter 9. The filter box 1 is fixedly sleeved on the second connecting pipe 7, wherein a second mounting hole for fixing the second connecting pipe 7 is opened on the right inner wall of the filter box 1. A second one-way valve 12 with the left side as the outlet is embedded and fixed on the right inner wall of the box-shaped filter 9. The right side of the second one-way valve 12 is aligned with the left end of the second connecting pipe 7 and is in contact with it. The setting of the second one-way valve 12 can prevent the exhaust gas from directly entering the interior of the second connecting pipe 7;

[0026] The left top of the thermal desorption device 101 is connected to and fixed with a first connecting pipe 2 with a blocking structure on the left side. The top of the first connecting pipe 2 is connected to and fixed with two first one-way valves 6 with outlets at the bottom. The bottom of the first solenoid valve 5 is connected and fixed to the top of the first one-way valve 6 on the left side. The top of the first one-way valve 6 on the right side is connected and fixed with an air inlet 104. The setting of the two first one-way valves 6 can prevent air from entering the exhaust gas detection guide assembly and prevent exhaust gas from being discharged to the outside through the air inlet 104. A timed reminder alarm clock 10 is fixedly connected to the left side of the filter box 1. The timed reminder alarm clock 10 is used to remind personnel at regular intervals. A PLC controller is installed in the control box 100. The PLC controller is electrically connected to the CO concentration sensor 4, the first solenoid valve 5 and the second solenoid valve 8. The CO concentration sensor 4 detects the CO concentration in the exhaust gas and detects the concentration of CO in the exhaust gas. The concentration value is transmitted to the PLC controller. The principle is the basic programming setting numerical control method well known to those skilled in the art. It can be realized by editing the corresponding control numerical program by numerical control programmers. They are all conventional means or common knowledge and will not be repeated here. The utility model can filter and adsorb the discharged exhaust gas multiple times through a series of structural settings, and can detect the discharged exhaust gas, and directly discharge the qualified exhaust gas into the thermal desorption device 101 for its heat and then reuse it for the second time, reducing the waste caused by direct discharge of heat, and discharge the unqualified exhaust gas into the activated carbon filler for secondary adsorption purification, avoiding the pollution caused by the direct discharge of unqualified exhaust gas. In addition, the first filter 11, the second filter 13 and the activated carbon filler can be cleaned or replaced quickly and regularly to facilitate personnel use.

[0027] Working Principle: When in use, the heat source generating device 102, the thermal desorption device 101, the control box 100, the air inlet 104 and the fuel inlet 103 cooperate to achieve effective soil remediation by thermal desorption and heating. The specific principle of thermal desorption and heating has been disclosed in the patent application number: 201521119463.6, and will not be elaborated here.

[0028] When exhaust gas is discharged during the process of thermal degassing and adding heat, the exhaust gas enters the filter box 1 through the L-shaped exhaust pipe 105, and the exhaust gas entering the filter box 1 passes through the first filter 11, the second filter 13, the activated carbon filler and the box-shaped filter 9 in sequence and is discharged into the L-shaped pipe 3. The first filter 11 performs a first filtration on the impurities in the exhaust gas, the second filter 13 performs a second filtration on the impurities in the exhaust gas, the activated carbon filler adsorbs and purifies the harmful substances in the exhaust gas, and the box-shaped filter 9 filters the exhaust gas after adsorption and purification again. By multiple filtration and adsorption purification methods, the exhaust gas can be effectively filtered and purified, and the CO concentration is reduced. The sensor 4 detects the CO concentration in the exhaust gas inside the L-shaped tube 3 and transmits the detected concentration value to the PLC controller. When it is detected that the CO concentration in the exhaust gas meets the requirements, the PLC controller controls the first solenoid valve 5 to open, so that the purified exhaust gas inside the L-shaped tube 3 enters the thermal desorption device 101 through the first solenoid valve 5, the first one-way valve 6 on the left, and the first connecting pipe 2 in sequence, directly providing a heat source for the thermal desorption device 101. By directly discharging the filtered and purified exhaust gas into the thermal desorption device 101, the exhaust gas contains heat, which can be reused, thereby reducing the waste caused by direct heat discharge;

[0029] If the CO concentration sensor 4 detects that the CO concentration in its exhaust gas does not meet the requirements, the PLC controller controls the second solenoid valve 8 to open and controls the first solenoid valve 5 to close, so that the gas stops entering the first connecting pipe 2, and the exhaust gas inside the L-shaped tube 3 is sequentially passed through the second solenoid valve 8, the second connecting pipe 7 and the second one-way valve 12 into the activated carbon filler, and the activated carbon filler performs secondary adsorption and purification on the exhaust gas. The gas after adsorption and purification passes through the box-shaped filter 9 again and enters the L-shaped tube 3, and the CO concentration sensor 4 detects the exhausted exhaust gas again. If it meets the requirements, the first solenoid valve 5 is opened and the second solenoid valve 8 is closed. If it does not meet the requirements, the second solenoid valve 8 is opened and the first solenoid valve 5 is closed, thereby achieving the effect of detecting and guiding the exhausted exhaust gas. By detecting the exhausted exhaust gas and performing secondary adsorption and purification when the detection fails, the pollution caused by the direct discharge of unqualified exhaust gas can be avoided;

[0030] The time for cleaning and replacing the activated carbon filler, the first filter 11 and the second filter 13 is set in advance by the timer alarm 10. When the cleaning time is reached, the timer alarm 10 sounds to remind the personnel. After receiving the reminder, the personnel can pull up the U-shaped handle to drive the cover 15 to separate upward from the filter box 1. The cover 15 drives the box-shaped filter 9 out of the filter box 1 through the connecting rod 16. The box-shaped filter 9 drives the first filter 11 and the second filter 13 to move out of the filter box 1. Then, the pull ring is pulled downward to drive the first filter 11 downward to separate from the box-shaped filter 9. The first filter 11 drives the second filter 13 downward to move out of the box-shaped filter 9, thereby releasing the cover on the bottom of the box-shaped filter 9. Block, at this time you can clean the first filter 11 and the second filter 13, and pour out the activated carbon filler inside the box-shaped filter 9 for replacement, add new activated carbon filler into the box-shaped filter 9, and move the second filter 13 into the box-shaped filter 9, fix the first filter 11 by the first magnet and the second magnet, and then you can move the box-shaped filter 9 into the filter box 1, and fix the cover 15 by the third magnet and the second magnet, so as to complete the replacement of the activated carbon filler and the cleaning of the first filter 11 and the second filter 13, and by reminding personnel when the cleaning time is reached, the personnel can disassemble and remove the filter for cleaning by simply pulling, which is convenient for regular and quick cleaning.

[0031] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A thermal desorption heating device for remediation of organic contaminated soil, comprising a thermal desorption heating device body, wherein the thermal desorption heating device body comprises a heat source generating device (102), a thermal desorption device (101) and a control box (100), wherein the heat source generating device (102) is fixedly connected to the thermal desorption device (101), the control box (100) is installed on the top of the thermal desorption device (101), and a fuel inlet (103) is provided on the control box (100), characterized in that: The left side of the heat source generating device (102) is connected and fixed with a smoke exhaust mechanism, and the smoke exhaust mechanism includes an L-shaped smoke exhaust pipe (105) connected and fixed to the left side of the heat source generating device (102), and the top of the L-shaped smoke exhaust pipe (105) is connected and fixed with a filter box (1) with an opening at the top, and a multi-stage filter adsorption component is installed in the filter box (1), and a cover plate (15) is fixed to the top of the filter box (1) by magnetic attraction, and the bottom of the cover plate (15) is fixed to the top of the multi-stage filter adsorption component, and the top of the right side of the filter box (1) is connected and fixed with an exhaust gas detection guide assembly, and the exhaust gas detection guide assembly is connected to the multi-stage filter adsorption component. The right side of the filter adsorption component is connected, the left top of the thermal desorption device (101) is connected and fixed with a first connecting pipe (2) with a blocking structure on the left side, the top of the first connecting pipe (2) is connected and fixed with two first one-way valves (6) with outlets at the bottom, the exhaust gas detection guide assembly is connected and fixed with the top of the first one-way valve (6) on the left side, the top of the first one-way valve (6) on the right side is connected and fixed with an air inlet (104), the left side of the filter box (1) is fixedly connected with a timer reminder alarm clock (10), and a PLC controller is installed in the control box (100), and the PLC controller is electrically connected to the exhaust gas detection guide assembly.

2. The thermal desorption and heating device for remediation of organic contaminated soil according to claim 1, characterized in that: The multi-stage filtering adsorption assembly comprises a box-shaped filter (9) movably sleeved in the filter box (1) and having an opening at the bottom, a first filter (11) being magnetically fixed to the bottom of the box-shaped filter (9), a second filter (13) movably sleeved in the box-shaped filter (9) being fixedly connected to the top of the first filter (11), an activated carbon filler filled in the box-shaped filter (9) being provided on the top of the second filter (13), a circular support frame (14) being fixedly connected between the inner walls on both sides of the filter box (1), the top of the circular support frame (14) being movably in contact with the bottom of the first filter (11), the bottom of the first filter (11) being fixedly connected to a first pull ring, and the top of the box-shaped filter (9) being fixedly mounted to the bottom of the cover plate (15).

3. The thermal desorption and heating device for remediation of organic contaminated soil according to claim 2, characterized in that: The exhaust gas detection guide assembly comprises an L-shaped tube (3) connected and fixed to the top of the right side of the filter box (1); the left end of the L-shaped tube (3) is located above the box-shaped filter (9); the bottom end of the L-shaped tube (3) is connected and fixed with a first electromagnetic valve (5); the bottom of the first electromagnetic valve (5) is connected and fixed with the top of the first one-way valve (6) on the left side; the top of the L-shaped tube (3) is fixedly connected with a CO concentration sensor (4); the detection end of the CO concentration sensor (4) extends into the L-shaped tube (3); the left bottom of the L-shaped tube (3) is connected and fixed with a second electromagnetic valve ( 8), the left side of the second solenoid valve (8) is connected and fixed with a second connecting pipe (7), the left end of the second connecting pipe (7) is in movable contact with the right side of the box-shaped filter (9), the filter box (1) is fixedly sleeved on the second connecting pipe (7), the right inner wall of the box-shaped filter (9) is embedded and fixed with a second one-way valve (12) with the left side as an outlet, the right side of the second one-way valve (12) is aligned and in contact with the left end of the second connecting pipe (7), and the CO concentration sensor (4), the first solenoid valve (5) and the second solenoid valve (8) are all electrically connected to the PLC controller.

4. The thermal desorption and heating device for remediation of organic contaminated soil according to claim 2, characterized in that: Two first grooves are provided on both sides of the bottom of the box-shaped filter (9), two first magnets are fixedly connected to both sides of the top of the first filter (11), a second magnet is fixedly connected to the inner wall of the top of the first groove, the first magnet is movably sleeved in the corresponding groove and adsorbed with the second magnet, the first filter (11) and the second filter (13) are both provided with filter holes, and the filter holes on the first filter (11) are larger than the filter holes on the second filter (13).

5. The thermal desorption and heating device for remediation of organic contaminated soil according to claim 2, characterized in that: A connecting rod (16) is fixedly connected between the top of the box-shaped filter (9) and the bottom of the cover plate (15), and a U-shaped handle is fixedly connected to the top of the cover plate (15).

6. The thermal desorption and heating device for remediation of organic contaminated soil according to claim 2, characterized in that: The front side, rear side, left side and right side of the box-shaped filter screen (9) are in active contact with the front inner wall, rear inner wall, left inner wall and right inner wall of the filter box (1) respectively.

7. The thermal desorption and heating device for remediation of organic contaminated soil according to claim 1, characterized in that: The filter box (1) is provided with a second groove on both sides of the top, a third magnet is fixedly connected to the inner wall of the bottom of the second groove, and a fourth magnet is fixedly connected to both sides of the bottom of the cover plate (15), and the fourth magnet is movably sleeved in the corresponding second groove and adsorbed with the third magnet.

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