Thermal desorption device for contaminated soil remediation

Abstract

The utility model relates to the technical field of soil remediation, in particular to a thermal desorption device for contaminated soil remediation, a treatment component is arranged inside a treatment cylinder, a filter component is arranged outside the treatment cylinder, the treatment component comprises a front cover mounted at the front part of the treatment cylinder, a feed hopper is mounted in the middle of the top of the treatment cylinder, and a discharge port is formed in the top of the treatment cylinder. A connecting cover is arranged on the rear portion of the treatment barrel, a limiting sliding block is fixedly installed outside the connecting cover and slidably connected to the interior of the treatment barrel, an arc-shaped storage net is fixedly installed on the inner side of the limiting sliding block, and the filtering assembly comprises connecting pipes installed on the two sides of the top of the treatment barrel. Wherein the outer end of one connecting pipe is connected with an air inlet pipe, and the outer end of the connecting pipe on the other side is connected with a connecting air pipe. According to the thermal desorption device for contaminated soil remediation, the whole device can discharge waste gas in a more environment-friendly mode, and the environment-friendly effect of the device is improved.

Description

Technical Field

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

[0002] Thermal desorption is the mainstream technology for the remediation of organic contaminated soil at present. It is a process of directly or indirectly heating the soil to increase the temperature of the soil and the organic matter therein, so that the organic matter begins to volatilize from the soil near the boiling point, and the volatilized organic gas is collected. Generally speaking, more than half of the organic pollutants of concern in the organic contaminated soil of construction land have a boiling point temperature below 300°C. For such substances, the temperature for thermal desorption from the soil generally reaches 320°C, so a corresponding thermal desorption device is required. For example, a Chinese patent discloses a thermal desorption device for the remediation of organic contaminated soil (authorization announcement number CN213001803U). This patented technology can reduce the remediation cost when the thermal desorption device is used, improve the convenience of the thermal desorption device when it is used, and reduce the pollution caused to the environment when the thermal desorption device is used;

[0003] However, the above disclosed thermal desorption device still has some defects when used: there is no processing structure to process the waste gas of thermal desorption, so that the waste gas is directly discharged into the air, affecting the air quality of the environment, which is not environmentally friendly. Therefore, those skilled in the art provide a thermal desorption device for contaminated soil remediation to solve the problems raised in the above background technology. Summary of the invention

[0004] The purpose of the utility model is to provide a thermal desorption device for contaminated soil remediation to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A thermal desorption device for contaminated soil remediation comprises a treatment cylinder, a treatment component is disposed inside the treatment cylinder, and a filter component is disposed outside the treatment cylinder;

[0007] The processing assembly includes a front cover installed at the front of the processing cylinder, a feed hopper is installed at the middle of the top of the processing cylinder, a connecting cover is provided at the rear of the processing cylinder, a limiting slider is fixedly installed on the outside of the connecting cover, the limiting slider is slidably connected to the inside of the processing cylinder, and an arc-shaped storage net is fixedly installed on the inner side of the limiting slider;

[0008] The filter assembly includes connecting pipes installed on both sides of the top of the processing cylinder, wherein the outer end of one connecting pipe is connected to the air inlet pipe, and the outer end of the connecting pipe on the other side is connected to the connecting air duct, a filter box is installed on the outer end of the air inlet pipe, the outer end of the connecting air duct is connected to the processing box, and a filtering mechanism is arranged inside the processing box.

[0009] As a further solution of the utility model: the filtering mechanism includes a top cover installed on the top of the processing box, an air outlet pipe is installed in the middle of the top of the top cover, and a connecting bucket is installed in the middle of the inside of the processing box.

[0010] As a further solution of the utility model: a threaded connecting sleeve is installed at the position of the connecting bucket on the inner wall of the processing box, and the connecting bucket and the threaded connecting sleeve are threadedly connected to each other. A filter net bag is fixedly installed at the bottom of the connecting bucket, and activated carbon is installed in the middle of the inner part of the filter net bag.

[0011] As a further solution of the utility model: an exhaust fan is installed inside the processing box near the filter net bag, a connecting port is opened inside the processing box at the position corresponding to the air outlet duct, and the air inlet end of the connecting port is connected to the air outlet end of the air outlet duct.

[0012] As a further solution of the utility model: an adjusting motor is fixedly installed at the front center of the front cover, and a combustion nozzle group is installed at the inner bottom of the processing cylinder.

[0013] As a further solution of the utility model: the output shaft of the regulating motor is installed with an adjusting shaft, the outside of the regulating shaft is equidistantly installed with a stirring wheel, and an igniter is installed at the position of the inner bottom of the front cover corresponding to the combustion nozzle group.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. Thermal desorption device used for contaminated soil remediation. When in use, the exhaust gas is discharged into the treatment box through the connecting air duct. The exhaust fan inside the treatment box blows the exhaust gas to the connecting bucket. The large particles of the exhaust gas can be filtered through the filter net bag. The exhaust gas can be adsorbed by activated carbon, which can effectively treat the exhaust gas and achieve more environmentally friendly exhaust gas discharge, which is better than the traditional method.

[0016] 2. The thermal desorption device used for the remediation of contaminated soil places the soil on the arc-shaped storage net. The adjusting motor at the front cover drives the adjusting shaft to rotate, which can drive the stirring wheel to stir the soil on the arc-shaped storage net, thereby improving the uniformity of soil thermal desorption. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1A schematic diagram of the structure of a thermal desorption device for contaminated soil remediation;

[0018] Figure 2 A schematic diagram of the structure of a treatment box in a thermal desorption device for contaminated soil remediation;

[0019] Figure 3 This is a schematic diagram of the structure of the treatment cylinder in the thermal desorption device used for contaminated soil remediation.

[0020] In the figure: 1. treatment cylinder; 2. front cover; 3. feed hopper; 4. air inlet pipe; 5. filter box; 6. connecting pipe; 7. connecting air duct; 8. treatment box; 9. top cover; 10. air outlet pipe; 11. connecting bucket; 12. filter net bag; 13. activated carbon; 14. threaded connection sleeve; 15. exhaust fan; 16. connection port; 17. connection cover; 18. limit slider; 19. arc storage net; 20. combustion nozzle group; 21. igniter; 22. adjustment motor; 23. adjustment shaft; 24. stirring wheel. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figures 1 to 3 In an embodiment of the utility model, a thermal desorption device for contaminated soil remediation includes a treatment cylinder 1, a treatment component is disposed inside the treatment cylinder 1, and a filter component is disposed outside the treatment cylinder 1;

[0023] The processing assembly includes a front cover 2 installed at the front of the processing cylinder 1, a feed hopper 3 is installed at the middle of the top of the processing cylinder 1, a connecting cover 17 is provided at the rear of the processing cylinder 1, a limiting slider 18 is fixedly installed on the outside of the connecting cover 17, the limiting slider 18 is slidably connected to the inside of the processing cylinder 1, and an arc-shaped storage net 19 is fixedly installed on the inner side of the limiting slider 18;

[0024] The filter assembly includes connecting pipes 6 installed on both sides of the top of the treatment cylinder 1, wherein the outer end of one connecting pipe 6 is connected to the air inlet pipe 4, and the outer end of the connecting pipe 6 on the other side is connected to the connecting air duct 7, the outer end of the air inlet pipe 4 is installed with a filter box 5, the outer end of the connecting air duct 7 is connected to the treatment box 8, and the interior of the treatment box 8 is provided with a filtering mechanism;

[0025] The filtering mechanism includes a top cover 9 installed on the top of the treatment box 8, an air outlet pipe 10 is installed in the middle of the top of the top cover 9, a connecting bucket 11 is installed in the middle of the inside of the treatment box 8, a threaded connecting sleeve 14 is installed at the position of the inner wall of the treatment box 8 corresponding to the connecting bucket 11, and the connecting bucket 11 and the threaded connecting sleeve 14 are threadedly connected to each other, a filter net bag 12 is fixedly installed at the bottom of the connecting bucket 11, and activated carbon 13 is installed in the middle of the inside of the filter net bag 12, an exhaust fan 15 is installed near the position of the filter net bag 12 in the inside of the treatment box 8, a connecting port 16 is opened in the inside of the treatment box 8 corresponding to the position of the air outlet pipe 10, and the air inlet end of the connecting port 16 is connected with the air outlet end of the air outlet pipe 10, the exhaust gas is discharged into the treatment box 8 through the connecting air pipe 7, and the exhaust gas is blown to the connecting bucket 11 by the exhaust fan 15 inside the treatment box 8, then the large particles of the exhaust gas can be filtered through the filter net bag 12, and the exhaust gas can be adsorbed by the activated carbon 13, so that the exhaust gas can be effectively treated, and more environmentally friendly exhaust gas can be achieved.

[0026] exist Figure 1 and 3 Middle: It also includes an adjusting motor 22 fixedly installed at the front center of the front cover 2, and a combustion nozzle group 20 is installed at the inner bottom of the treatment tube 1. Through the external gas pipe and the combustion nozzle group 20, the ignition heating is carried out in conjunction with the igniter 21 for thermal desorption, and the exhaust gas is discharged into the treatment box 8 through the connecting air duct 7.

[0027] exist Figure 1 and 3 Middle: The output shaft of the regulating motor 22 is installed with an regulating shaft 23, and the outside of the regulating shaft 23 is equidistantly installed with a stirring wheel 24. The inner bottom of the front cover 2 is installed with an igniter 21 at the position corresponding to the combustion nozzle group 20. The regulating motor 22 at the front cover 2 drives the regulating shaft 23 to rotate, which can drive the stirring wheel 24 to stir the soil on the arc storage net 19, thereby improving the uniformity of soil thermal desorption.

[0028] The working principle of the utility model is as follows: soil that needs thermal desorption is added into the treatment cylinder 1 through the feed hopper 3, the soil will fall to the arc storage net 19, and will be ignited and heated by the igniter 21 through the external gas pipe and the combustion nozzle group 20 for thermal desorption, and the exhaust gas will be discharged into the treatment box 8 through the connecting air duct 7, and the exhaust gas will be blown to the connecting bucket 11 through the exhaust fan 15 inside the treatment box 8, and the large particles of the exhaust gas can be filtered through the filter net bag 12, and the exhaust gas can be adsorbed by the activated carbon 13, so that the exhaust gas can be effectively treated, and more environmentally friendly exhaust gas discharge can be achieved, and the soil is placed on the arc storage net 19, and the adjusting shaft 23 is driven to rotate by the adjusting motor 22 at the front cover 2, so that the stirring wheel 24 can be driven to stir the soil on the arc storage net 19, so that the uniformity of soil thermal desorption can be improved, which is more practical.

Claims

1. A thermal desorption device for contaminated soil remediation, comprising a treatment cylinder (1), characterized in that: A processing assembly is disposed inside the processing cylinder (1), and a filtering assembly is disposed outside the processing cylinder (1); The processing assembly comprises a front cover (2) installed at the front of the processing cylinder (1), a feed hopper (3) is installed at the middle of the top of the processing cylinder (1), a connecting cover (17) is arranged at the rear of the processing cylinder (1), a limiting slider (18) is fixedly installed on the outside of the connecting cover (17), the limiting slider (18) is slidably connected to the inside of the processing cylinder (1), and an arc-shaped storage net (19) is fixedly installed on the inner side of the limiting slider (18); The front center of the front cover (2) is fixedly mounted with an adjustment motor (22), and the inner bottom of the treatment cylinder (1) is mounted with a combustion nozzle group (20); The output shaft of the regulating motor (22) is mounted with an regulating shaft (23), the outside of the regulating shaft (23) is equidistantly mounted with a stirring wheel (24), and an igniter (21) is mounted at the inner bottom of the front cover (2) at a position corresponding to the combustion nozzle group (20); The filter assembly comprises connecting pipes (6) installed on both sides of the top of the treatment cylinder (1), wherein the outer end of one connecting pipe (6) is connected to the air inlet pipe (4), and the outer end of the other connecting pipe (6) is connected to the connecting air duct (7), the outer end of the air inlet pipe (4) is installed with a filter box (5), the outer end of the connecting air duct (7) is connected to the treatment box (8), and a filtering mechanism is arranged inside the treatment box (8).

2. The thermal desorption device for contaminated soil remediation according to claim 1, characterized in that: The filtering mechanism comprises a top cover (9) installed on the top of the processing box (8), an air outlet pipe (10) is installed in the middle of the top of the top cover (9), and a connecting bucket (11) is installed in the middle of the inside of the processing box (8).

3. The thermal desorption device for contaminated soil remediation according to claim 2, characterized in that: A threaded connection sleeve (14) is installed on the inner wall of the treatment box (8) at a position corresponding to the connection bucket (11), and the connection bucket (11) and the threaded connection sleeve (14) are threadedly connected to each other. A filter net bag (12) is fixedly installed at the bottom of the connection bucket (11), and activated carbon (13) is installed in the middle of the filter net bag (12).

4. The thermal desorption device for contaminated soil remediation according to claim 1, characterized in that: An exhaust fan (15) is installed inside the processing box (8) near the filter net bag (12), and a connecting port (16) is provided inside the processing box (8) at a position corresponding to the air outlet pipe (10), and the air inlet end of the connecting port (16) is connected to the air outlet end of the air outlet pipe (10).

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