In-situ thermal desorption remediation device for organic contaminated soil

Abstract

The utility model relates to soil remediation equipment technical field discloses an organic contaminated soil in situ thermal desorption repair device, including soil remediation storehouse, the bottom of soil remediation storehouse is provided with the repair support subassembly, the periphery of soil remediation storehouse is evenly provided with fastening screw, the soil remediation storehouse is provided with thermal desorption gas exhaust subassembly, the utility model discloses a thermal desorption gas exhaust subassembly is provided on soil remediation storehouse, the bottom of soil remediation storehouse is provided with repair support subassembly, wherein the middle part baffle in thermal desorption gas exhaust subassembly sets up in the middle part of soil remediation storehouse, and further avoid the problem that the pipe orifice is easy to be blocked in traditional mode, uses the pumping and exhaust pipe, effectively improves the repair efficiency of soil thermal desorption, is more convenient for the use of user, and the bottom support station top of repair support subassembly is provided with two discharge channels symmetrically, and the discharge of thermal desorption soil in soil remediation storehouse is more convenient.

Description

Technical Field

[0001] This utility model relates to the field of soil remediation equipment technology, specifically to an in-situ thermal desorption remediation device for organically contaminated soil. Background Technology

[0002] Thermal desorption, as a non-combustion technology, has a wide range of pollutant treatment capabilities, mobile equipment, and allows for the reuse of remediated soil. It is particularly effective for chlorinated organic compounds, as the non-oxidative combustion method avoids dioxin formation, making it widely used for the remediation of organic-contaminated soils. Currently, the traditional thermal desorption technology for contaminated soil is drum-type thermal desorption, while emerging technologies include fluidized bed thermal desorption, microwave thermal desorption, and far-infrared thermal desorption.

[0003] A search revealed that Chinese patent publication number CN 212264158 U discloses an in-situ thermal desorption remediation device for organically contaminated soil, comprising: a square tube sleeve, a cylindrical tube, a coil, and a conversion interface; the cylindrical tube is disposed within the square tube sleeve, and the coil is wound around the outer wall of the cylindrical tube; the bottom of the cylindrical tube is connected to a cylindrical tube inlet pipe, and the top of the cylindrical tube is connected to a cylindrical tube outlet pipe; one side of the coil is connected to a coil outlet pipe, and the other side of the coil is connected to a coil outlet pipe; the cylindrical tube inlet pipe and the coil outlet pipe are connected through the conversion interface, and the cylindrical tube outlet pipe and the coil outlet pipe are connected through the conversion interface. This invention utilizes the heat from the exhaust gas to accelerate the soil heating rate, avoiding excessive energy consumption. The soil temperature at the furthest point from the heating well can quickly reach the target temperature, thus reducing the overall energy consumption of the thermal desorption remediation process.

[0004] The soil thermal desorption remediation device in the above-mentioned patent still has certain shortcomings. Traditional in-situ thermal desorption remediation equipment for organically polluted soil usually puts the organically polluted soil into the thermal desorption chamber for treatment. However, in the existing thermal desorption remediation chamber, the harmful gases emitted during thermal desorption are relatively slow to be discharged, and sometimes the extraction pipe opening for diversion is easily blocked by soil, which greatly reduces the efficiency of soil thermal desorption remediation. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides an in-situ thermal desorption remediation device for organically contaminated soil. This device solves the problems of slow removal of harmful gases during thermal desorption in existing thermal desorption remediation chambers, and the tendency for the extraction pipe to be blocked by soil, which greatly reduces the efficiency of thermal desorption remediation of soil.

[0006] This utility model provides the following technical solution: an in-situ thermal desorption remediation device for organic polluted soil, including a soil remediation chamber, a remediation support component at the bottom of the soil remediation chamber, fastening screws evenly arranged around the soil remediation chamber, and a thermal desorption gas discharge component on the soil remediation chamber.

[0007] The remediation support assembly includes a bottom support platform disposed at the bottom of the soil remediation chamber. Support legs are evenly arranged around the bottom end of the bottom support platform. Two discharge channels are symmetrically opened at the top of the bottom support platform. Limit slots are opened on the side walls of the discharge channels, and channel closing plates are inserted into the limit slots.

[0008] The thermal desorption gas exhaust assembly includes a top closed cover disposed on the top of the soil remediation chamber. The top of the top closed cover has a central through hole, and an exhaust collection cover is disposed on the central through hole. The top of the exhaust collection cover has a gas exhaust pipe, and a closed valve is disposed on the gas exhaust pipe. The inner walls on both sides of the soil remediation chamber have symmetrically disposed mounting slots. A central partition plate is inserted into the mounting slot. An exhaust channel is disposed on the top of the central partition plate. A plurality of central reinforcing rods are evenly disposed in the exhaust channel. Ventilation holes are evenly disposed on the central reinforcing rods.

[0009] Preferred technical solution 1: Two side air inlets are symmetrically opened on the side wall of the exhaust channel, and each side air inlet is equipped with a soil filter screen.

[0010] Preferred technical solution 2: The soil remediation chamber is fixedly connected to the top of the bottom support platform by the fastening screws.

[0011] Preferred technical solution 3: The soil remediation chamber has openings at both the top and bottom.

[0012] This solution makes it easier to remove soil that has been placed in the soil remediation chamber.

[0013] Preferred technical solution four: The top of the soil remediation chamber is uniformly provided with baffles around its perimeter.

[0014] This solution allows the top closed cover to be positioned and limited at the top of the soil remediation chamber.

[0015] Preferred technical solution five: Two handles are symmetrically arranged on both sides of the top of the middle partition plate.

[0016] This solution makes it easier for users to pull out the middle partition.

[0017] Compared with existing technologies, this utility model provides an in-situ thermal desorption remediation device for organically contaminated soil, which has the following beneficial effects: This utility model has a thermal desorption gas exhaust component installed on the soil remediation chamber and a remediation support component installed at the bottom of the soil remediation chamber. The central partition plate of the thermal desorption gas exhaust component is located in the middle of the soil remediation chamber, and an exhaust channel is set in the middle of the central partition plate. The two sides of the central partition plate are in contact with the thermally desorbed soil through the soil filter screen, thereby increasing the contact area between the partition plate and the soil. This allows the harmful gases emitted by the organically contaminated soil during the thermal desorption process to quickly enter the exhaust channel through the soil filter screen, be discharged upward through the exhaust channel, and then be safely released through the gas exhaust pipe. This avoids the problem of easy blockage of the pipe opening caused by the use of the extraction pipe in the traditional method, effectively improving the remediation efficiency of soil thermal desorption and making it more convenient for users. The bottom support platform of the remediation support component has two symmetrically opened discharge channels at the top, which makes it more convenient to discharge the thermally desorbed soil in the soil remediation chamber. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0019] Figure 2 This is an exploded view of the structure of this utility model;

[0020] Figure 3 For the present utility model Figure 2 Enlarged view of the structure of the central discharge channel;

[0021] Figure 4 For the present utility model Figure 2 A schematic diagram of the structure of the central partition plate.

[0022] In the diagram: 1. Soil remediation chamber; 2. Remediation support assembly; 3. Fastening screws; 4. Thermal desorption gas exhaust assembly;

[0023] 201. Bottom support platform; 202. Support leg; 203. Discharge channel; 204. Limiting slot; 205. Channel closing plate;

[0024] 401. Top closed cover; 402. Central through hole; 403. Exhaust collection cover; 404. Gas exhaust pipe; 405. Closing valve; 406. Mounting slot; 407. Central partition plate; 408. Exhaust channel; 409. Central reinforcing rod; 410. Vent hole; 411. Side air inlet; 412. Soil filter screen. Detailed Implementation

[0025] Please see Figure 1-4 ,

[0026] Example 1: An in-situ thermal desorption remediation device for organic polluted soil includes a soil remediation chamber 1, a remediation support component 2 at the bottom of the soil remediation chamber 1, fastening screws 3 evenly arranged around the soil remediation chamber 1, and a thermal desorption gas discharge component 4 on the soil remediation chamber 1.

[0027] The repair support assembly 2 includes a bottom support platform 201 set at the bottom of the soil remediation chamber 1. Support legs 202 are evenly arranged around the bottom end of the bottom support platform 201. Two discharge channels 203 are symmetrically opened at the top of the bottom support platform 201. Limiting slots 204 are opened on the side walls of the discharge channels 203. Channel closing plates 205 are inserted into the limiting slots 204.

[0028] The thermal desorption gas discharge assembly 4 includes a top closed cover 401 disposed on the top of the soil remediation chamber 1. The top of the top closed cover 401 has a central through hole 402. An exhaust collection cover 403 is disposed on the central through hole 402. A gas discharge pipe 404 is disposed on the top of the exhaust collection cover 403. A closing valve 405 is disposed on the gas discharge pipe 404. The inner walls on both sides of the soil remediation chamber 1 are symmetrically provided with installation slots 406. A central partition plate 407 is inserted into the installation slots 406. An exhaust channel 408 is disposed on the top of the central partition plate 407. Several central reinforcing rods 409 are evenly disposed in the exhaust channel 408. Ventilation holes 410 are evenly disposed on the central reinforcing rods 409. Two side air inlets 411 are symmetrically provided on the side walls of the exhaust channel 408. Soil filter screens 412 are disposed on each side air inlet 411.

[0029] The soil remediation chamber 1 is fixedly connected to the top of the bottom support platform 201 by fastening screws 3.

[0030] Example 2: The difference between this example and Example 1 is that the soil remediation chamber 1 has open ends at both the top and bottom.

[0031] This makes it easier to remove the soil that has been put into the soil remediation chamber 1.

[0032] Example 3: The difference between this example and Example 1 is that, in this example, baffles are evenly arranged around the top of the soil remediation chamber 1.

[0033] This ensures that the top closed cover 401 is positioned and limited at the top of the soil remediation chamber 1.

[0034] Example 4: The difference between this example and Example 1 is that two handles are symmetrically arranged on both sides of the top of the middle partition plate 407.

[0035] This makes it easier for users to pull out the middle partition 407.

[0036] In this embodiment, the removal of harmful gases from the thermal desorption process in the existing thermal desorption remediation chamber is relatively slow, and the extraction pipe opening for diversion is sometimes easily blocked by soil, which greatly reduces the efficiency of thermal desorption remediation of soil.

[0037] In summary, during specific implementation, when users need to perform thermal desorption remediation treatment on organically contaminated soil, they first need to remove the top closed cover 401 of the thermal desorption gas exhaust component 4 from the top of the soil remediation chamber 1, and pour the organically contaminated soil to be thermally desorbed onto both sides of the middle partition 407, ensuring that the soil does not submerge the top of the middle partition 407. Since both sides of the middle partition 407 are equipped with soil filters 412, the soil filters 412 can increase the contact area with the soil while effectively preventing the soil from entering the exhaust channel 408 opened in the middle partition 407. This allows the harmful gases emitted from the soil to pass better through the soil filters 412 into the exhaust channel 408 when the heating device is placed inside the soil remediation chamber 1 to perform thermal desorption and heating on the soil. The gases are then discharged upwards more quickly through the exhaust channel 408 and into the bottom side of the top closed cover 401 at the top of the soil remediation chamber 1.

[0038] Next, by connecting the gas discharge pipe 404 to the external connecting pipe and opening the closed valve 405, the harmful gas is output to the reprocessing equipment, thus completing the discharge of harmful gases during the soil thermal desorption process. At the same time, it avoids the problem of easy blockage of the pipe opening caused by the use of the extraction pipe in the traditional method, effectively improving the remediation efficiency of soil thermal desorption and making it more convenient for users to use.

[0039] The bottom support platform 201 of the repair support component 2 has two symmetrical discharge channels 203 at its top. When the soil in the soil remediation chamber 1 has completed thermal desorption, the user can pull out the channel closing plate 205 inserted in the limit slot 204, thereby opening the bottom of the soil remediation chamber 1 and discharging the soil after thermal desorption through the discharge channel 203. This makes the discharge of soil from the soil remediation chamber 1 more convenient and faster, and easier for the user.

Claims

1. An in-situ thermal desorption remediation device for organically contaminated soil, comprising a soil remediation chamber (1), characterized in that: The bottom of the soil remediation chamber (1) is provided with a remediation support component (2), and fastening screws (3) are evenly arranged around the soil remediation chamber (1). The soil remediation chamber (1) is provided with a thermal desorption gas discharge component (4). The repair support assembly (2) includes a bottom support platform (201) disposed at the bottom of the soil remediation chamber (1). Support legs (202) are evenly arranged around the bottom end of the bottom support platform (201). Two discharge channels (203) are symmetrically opened at the top of the bottom support platform (201). Limit slots (204) are opened on the side walls of the discharge channels (203). Channel closing plates (205) are inserted into the limit slots (204). The thermal desorption gas discharge assembly (4) includes a top closed cover (401) disposed on the top of the soil remediation chamber (1). The top of the top closed cover (401) has a central through hole (402). An exhaust collection cover (403) is disposed on the central through hole (402). A gas discharge pipe (404) is disposed on the top of the exhaust collection cover (403). A closing valve (405) is disposed on the gas discharge pipe (404). Installation slots (406) are symmetrically provided on the inner walls on both sides of the soil remediation chamber (1). A central partition plate (407) is inserted into the installation slot (406). An exhaust channel (408) is provided on the top of the central partition plate (407). A plurality of central reinforcing rods (409) are evenly disposed in the exhaust channel (408). Ventilation holes (410) are evenly provided on the central reinforcing rods (409).

2. The in-situ thermal desorption remediation device for organically contaminated soil according to claim 1, characterized in that: The exhaust channel (408) has two symmetrical side air inlets (411) on its side wall, and each side air inlet (411) is provided with a soil filter screen (412).

3. The in-situ thermal desorption remediation device for organically contaminated soil according to claim 2, characterized in that: The soil remediation chamber (1) is fixedly connected to the top of the bottom support platform (201) by the fastening screws (3) provided.

4. The in-situ thermal desorption remediation device for organically contaminated soil according to claim 3, characterized in that: The soil remediation chamber (1) has openings at both the top and bottom.

5. The in-situ thermal desorption remediation device for organically contaminated soil according to claim 4, characterized in that: The top of the soil remediation chamber (1) is evenly equipped with baffles around its perimeter.

6. The in-situ thermal desorption remediation device for organically contaminated soil according to claim 5, characterized in that: Two handles are symmetrically arranged on both sides of the top of the central partition plate (407).

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