Combustor for thermal desorption of soil

Abstract

The utility model relates to the technical field of soil groundwater remediation, in particular to a combustor for soil thermal desorption, which comprises a fuel tank, an ignition mechanism, a heating well, a combustion fan, a heat insulation device and an auxiliary component, and the auxiliary component comprises a placing plate, a support frame, a fixing frame, a spring, a clamping plate, a shell and a heat exchanger body; when high-temperature gas is discharged out of the heating well, the high-temperature gas is sucked in through the heat exchanger body, meanwhile, external cold air is sucked in, the cold air and the high-temperature gas flow in the channel and conduct heat exchange through the plates, then the temperature of the cold air is increased, the cold air completing exchange can enter the heating well, the combustion efficiency is improved, and the heat exchange efficiency is improved. Therefore, the problem that part of heat generated by the combustor is wasted due to the fact that high-temperature gas of an existing combustor for soil thermal desorption penetrates through soil and then is discharged into air is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of soil and groundwater restoration, in particular to a burner for soil thermal desorption. Background Art

[0002] The burner for soil thermal desorption is to ignite and burn after mixing fuel with air to produce high-temperature gas. These high-temperature gases are injected into the contaminated soil through the heating well, and the soil is heated by heat conduction to make its temperature reach the target value. When the soil temperature is high enough, the pollutants in the soil will be volatilized by heat and extracted to the surface through the extraction system for subsequent treatment.

[0003] At present, the prior art discloses a burner for soil thermal desorption, including a fuel tank, an ignition mechanism, a heating well, a combustion-supporting fan and a heat insulation device. When in use, the combustion-supporting fan is started to form a negative pressure in the heating well, and the fuel gas and air are drawn in and mixed, ignited, and high-temperature gas is generated; the high-temperature gas flows in the heating well, thereby indirectly heating the soil, and heating the target restoration area by heat conduction, so that the soil temperature rises to the target temperature; the high-temperature gas is directly discharged.

[0004] However, in the above method, the soil is indirectly heated by burning the high-temperature gas flowing in the heating well, and the high-temperature gas is discharged into the air after passing through the soil, resulting in part of the heat generated by the burner being wasted. Utility Model Content

[0005] The utility model aims to provide a burner for soil thermal desorption, aiming to solve the problem that the existing burner for soil thermal desorption indirectly heats the soil by burning the flow of high-temperature gas in the heating well, and the high-temperature gas is discharged into the air after passing through the soil, resulting in part of the heat generated by the burner being wasted.

[0006] To achieve the above-mentioned purpose, the utility model provides a soil thermal desorption burner, comprising a fuel tank, an ignition mechanism, a heating well, a combustion-supporting fan, a heat insulation device and an auxiliary component, wherein the ignition mechanism is arranged on one side of the fuel tank, the heating well is fixedly connected to the ignition mechanism and is located on a side of the ignition mechanism away from the fuel tank, the output end of the combustion-supporting fan is fixedly connected to the heating well and is located on one side of the heating well, the heat insulation device is fixedly connected to the heating well and is located on one side of the heating well, and the auxiliary component comprises a placement plate, a support frame, a fixing frame, a spring, a clamping plate, a shell and a heat exchanger body;

[0007] The placement plate is fixedly connected to the combustion-supporting fan and is located at the bottom of the combustion-supporting fan. The support frame is fixedly connected to the placement plate and is located at the bottom of the placement plate. The frame is fixedly connected to the placement plate and is located on a side of the placement plate close to the combustion-supporting fan. The spring is fixedly connected to the frame and is located on one side of the frame. The clamping plate is fixedly connected to the spring and is located on the side of the spring. The outer shell is slidably connected to the clamping plate and is located on one side of the clamping plate. The heat exchanger body is fixedly connected to the outer shell and is located on one side of the outer shell.

[0008] Wherein, the auxiliary component also includes a connecting rod and a placement frame, the connecting rod is rotatably connected to the placement plate and is located on one side of the placement plate, and the placement frame is fixedly connected to the connecting rod and is located on the side of the connecting rod away from the placement plate.

[0009] Wherein, the auxiliary component also includes a fixing frame and bolts, the fixing frame is fixedly connected to the heating well and is located on one side of the heating well, and the bolts are threadedly connected to the heating well and pass through the fixing frame.

[0010] Wherein, the auxiliary component also includes a protection mechanism, and the protection mechanism is arranged on one side of the placement plate.

[0011] Wherein, the protection mechanism comprises a rotating frame and a cover plate, wherein the rotating frame is fixedly connected to the shell and is located at one side of the shell, and the cover plate is rotatably connected to the rotating frame and is located at one side of the rotating frame.

[0012] Wherein, the protection mechanism also includes a locking ring and a locking block, wherein the locking ring is fixedly connected to the cover plate and is located on a side of the cover plate away from the rotating frame, and the locking block is fixedly connected to the outer shell and slidably connected to the locking ring and is located on one side of the outer shell.

[0013] The utility model is a soil thermal desorption burner. When the soil needs to be treated, the fuel is first placed in the fuel tank and the heating well is placed in the soil. At the same time, the support frame is placed at a specified position, and the clamping plate is pulled to compress the spring, and then the heat exchanger body placed in the shell is placed in the fixing frame, and the spring is released so that the clamping plate cooperates with the frame to fix the position of the shell, and the position of the heat exchanger body is fixed accordingly. At this time, the ignition mechanism is started, and the ignition mechanism can ignite the fuel discharged from the fuel tank. At the same time, the combustion-supporting fan is started, so that the outside air can enter the heating well, mix with the fuel to generate high-temperature gas, and flow in the heating well. The high-temperature gas flows in the heating well. The heat exchanger body is designed to heat the soil indirectly and heat the target restoration area by heat conduction, so that the soil temperature rises to the target temperature. When the high-temperature gas is discharged from the heating well, the high-temperature gas is sucked in through the heat exchanger body. At the same time, the external cold air is sucked in. The cold air and the high-temperature gas flow in the channel through the plate to exchange heat, thereby increasing the temperature of the cold air, so that the exchanged cold air can enter the heating well from the ignition mechanism, which is helpful to improve the combustion efficiency. The model of the heat exchanger body is BEM-300-SS, which solves the problem that the existing soil thermal desorption burner indirectly heats the soil by burning the high-temperature gas flowing in the heating well, and the high-temperature gas is discharged into the air after passing through the soil, resulting in part of the heat generated by the burner being wasted. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0015] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model.

[0016] Figure 2 It is an overall front view of the first embodiment of the utility model.

[0017] Figure 3 It is an overall top view of the first embodiment of the utility model.

[0018] Figure 4 It is a schematic diagram of the overall structure of the second embodiment of the utility model.

[0019] Figure 5 It is an overall top view of the second embodiment of the utility model.

[0020] 101-fuel tank, 102-ignition mechanism, 103-heating well, 104-combustion-supporting fan, 105-heat insulation device, 106-auxiliary components, 107-placing plate, 108-support frame, 109-frame, 110-spring, 111-clamp, 112-housing, 113-heat exchanger body, 114-connecting rod, 115-placing frame, 116-fixing frame, 117-bolt, 201-protection mechanism, 202-rotating frame, 203-cover plate, 204-locking ring, 205-locking block. DETAILED DESCRIPTION

[0021] The first embodiment of the present application is:

[0022] See also Figure 1 to Figure 3 , Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model. Figure 2 It is a front view of the whole of the first embodiment of the utility model. Figure 3 It is an overall top view of the first embodiment of the utility model.

[0023] The utility model discloses a burner for soil thermal desorption, comprising a fuel tank 101, an ignition mechanism 102, a heating well 103, a combustion-supporting fan 104, a heat insulation device 105 and an auxiliary component 106, wherein the auxiliary component 106 comprises a placement plate 107, a support frame 108, a frame 109, a spring 110, a clamping plate 111, a shell 112, a heat exchanger body 113, a connecting rod 114, a placement frame 115, a fixing frame 116 and bolts 117; the above-mentioned scheme solves the problem that the existing burner for soil thermal desorption indirectly heats the soil by burning the high-temperature gas flowing in the heating well 103, and the high-temperature gas is discharged into the air after passing through the soil, resulting in part of the heat generated by the burner being wasted.

[0024] According to this specific embodiment, the ignition mechanism 102 is arranged on one side of the fuel tank 101, the heating well 103 is fixedly connected to the ignition mechanism 102 and is located on the side of the ignition mechanism 102 away from the fuel tank 101, the output end of the combustion-supporting fan 104 is fixedly connected to the heating well 103 and is located on one side of the heating well 103, the insulation device 105 is fixedly connected to the heating well 103 and is located on one side of the heating well 103, the combustion-supporting fan 104 is started, a negative pressure is formed in the heating well 103, the gas and air are drawn in and mixed, ignited, and high-temperature gas is generated; the high-temperature gas flows in the heating well 103, thereby indirectly heating the soil, and heating the target repair area by heat conduction, so that the soil temperature rises to the target temperature, and then the soil is repaired.

[0025] The placement plate 107 is fixedly connected to the combustion-supporting fan 104 and is located at the bottom of the combustion-supporting fan 104. The support frame 108 is fixedly connected to the placement plate 107 and is located at the bottom of the placement plate 107. The frame 109 is fixedly connected to the placement plate 107 and is located on a side of the placement plate 107 close to the combustion-supporting fan 104. The spring 110 is fixedly connected to the frame 109 and is located on one side of the frame 109. The clamping plate 111 is fixedly connected to the spring 110 and is located on the side of the spring 110. The housing 112 is slidably connected to the clamping plate 111. The heat exchanger body 113 is fixedly connected to the shell 112 and is located on one side of the shell 112. When the soil needs to be treated, the fuel is first placed in the fuel tank 101, and the heating well 103 is placed in the soil. At the same time, the support frame 108 is placed at a designated position, and the clamping plate 111 is pulled to compress the spring 110, and then the heat exchanger body 113 placed in the shell 112 is placed in the fixing frame 116, and the spring 110 is released, so that the clamping plate 111 cooperates with the frame 109 to fix the shell 112. The position of the heat exchanger body 113 is fixed accordingly. At this time, the ignition mechanism 102 is started, and the ignition mechanism 102 can ignite the fuel discharged from the fuel tank 101. At the same time, the combustion-supporting fan 104 is started, so that the outside air can enter the heating well 103 and mix with the fuel to generate high-temperature gas, which flows in the heating well 103. The high-temperature gas flows in the heating well 103 and can indirectly heat the soil. The target restoration area is heated by superheat conduction, so that the soil temperature rises to the target temperature. When the high-temperature gas is discharged from the heating well 103, it passes through the heat exchanger body 1 13 sucks in the high-temperature gas, and at the same time, sucks in the external cold air. The cold air and the high-temperature gas flow in the channel through the plates to exchange heat, thereby increasing the temperature of the cold air, so that the cold air that has completed the exchange can enter the heating well 103 from the ignition mechanism 102, which is helpful to improve the combustion efficiency. The model of the heat exchanger body 113 is BEM-300-SS, which solves the problem that the existing soil thermal desorption burner indirectly heats the soil by burning the high-temperature gas flowing in the heating well 103, and the high-temperature gas is discharged into the air after passing through the soil, resulting in part of the heat generated by the burner being wasted.

[0026] Secondly, the connecting rod 114 is rotatably connected to the placement plate 107 and is located on one side of the placement plate 107. The placement frame 115 is fixedly connected to the connecting rod 114 and is located on a side of the connecting rod 114 away from the placement plate 107. The temperature sensor can be placed in the placement frame 115. When needed, the connection rod 114 is rotated to drive the placement frame 115 to move, and then the temperature sensor is moved to the position of the repaired soil to monitor the temperature of the soil. The model of the temperature sensor is the MLX90614 infrared temperature sensor.

[0027] Again, the fixed frame 116 is fixedly connected to the heating well 103 and is located on one side of the heating well 103. The bolt 117 is threadedly connected to the heating well 103 and passes through the fixed frame 116. By right-turning the bolt 117, the fixed frame 116 is fixed to the heating well 103. A temperature sensor can be placed in the fixed frame 116 to monitor the temperature in the heating well 103, which is convenient for staff to check. The model of the temperature sensor is PT100.

[0028] In the soil thermal desorption burner described in this embodiment, when the soil needs to be treated, the fuel is first placed in the fuel tank 101, and the heating well 103 is placed in the soil. At the same time, the support frame 108 is placed at a specified position, and the clamping plate 111 is pulled to compress the spring 110, and then the heat exchanger body 113 placed in the shell 112 is placed in the fixing frame 116, and the spring 110 is released, so that the clamping plate 111 cooperates with the frame 109 to fix the position of the shell 112, and the heat exchanger body 113 is fixed. The position is fixed accordingly. At this time, the ignition mechanism 102 is started, and the ignition mechanism 102 can ignite the fuel discharged from the fuel tank 101. At the same time, the combustion-supporting fan 104 is started, so that the outside air can enter the heating well 103 and mix with the fuel to generate high-temperature gas, which flows in the heating well 103. The high-temperature gas flows in the heating well 103 and can indirectly heat the soil, and heat the target repair area by superheat conduction, so that the soil temperature rises to the target temperature. At the same time, the connecting rod 114 is rotated to drive the placement frame 115 to move, thereby raising the temperature The sensor moves to the location of the repaired soil to monitor the temperature of the soil, which is convenient for the staff to adjust the temperature. The sensor used for monitoring the soil temperature is an MLX90614 infrared temperature sensor. When the high-temperature gas is discharged from the heating well 103, the high-temperature gas is sucked in through the heat exchanger body 113, and at the same time, the external cold air is sucked in. The cold air and the high-temperature gas flow in the channel through the plate to exchange heat, thereby increasing the temperature of the cold air, so that the cold air that has completed the exchange can enter the heating well 10 from the ignition mechanism 102. 3, which helps to improve the combustion efficiency. The model of the heat exchanger body 113 is BEM-300-SS. The temperature sensor is placed in the fixing frame 116 to monitor the temperature in the heating well 103, which is convenient for the staff to check. The sensor for monitoring the temperature in the heating well 103 adopts PT100, thereby solving the problem that the existing soil thermal desorption burner indirectly heats the soil by burning the high-temperature gas flowing in the heating well 103, and the high-temperature gas is discharged into the air after passing through the soil, resulting in part of the heat generated by the burner being wasted.

[0029] The second embodiment of the present application is:

[0030] Based on the first embodiment, please refer to Figure 4-5 , Figure 4 It is a schematic diagram of the overall structure of the second embodiment of the utility model. Figure 5 It is an overall top view of the second embodiment of the utility model.

[0031] The auxiliary component 106 of the soil thermal desorption burner of this embodiment further includes a protection mechanism 201 , and the protection mechanism 201 includes a rotating frame 202 , a cover plate 203 , a locking ring 204 and a locking block 205 .

[0032] Among them, the rotating frame 202 is fixedly connected to the outer shell 112 and is located on one side of the outer shell 112. The cover plate 203 is rotatably connected to the rotating frame 202 and is located on one side of the rotating frame 202. By rotating the cover plate 203 on the rotating frame 202, the heat exchanger body 113 can be shielded and protected.

[0033] Among them, the locking ring 204 is fixedly connected to the cover plate 203 and is located on a side of the cover plate 203 away from the rotating frame 202. The locking block 205 is fixedly connected to the outer shell 112 and is slidably connected to the locking ring 204 and is located on one side of the outer shell 112. When the cover plate 203 rotates, it drives the locking ring 204 to move, so that the locking ring 204 slides into the locking block 205, and then presses against the locking ring 204, so that the position of the cover plate 203 is fixed.

[0034] The soil thermal desorption burner described in this embodiment can cover the heat exchanger body 113 and protect it by rotating the cover plate 203 on the rotating frame 202. When the cover plate 203 rotates, it drives the locking ring 204 to move, so that the locking ring 204 slides into the locking block 205 and then presses against the locking ring 204, so that the position of the cover plate 203 is fixed.

[0035] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A burner for soil thermal desorption, comprising a fuel tank, an ignition mechanism, a heating well, a combustion-supporting fan and a heat insulation device, wherein the ignition mechanism is arranged on one side of the fuel tank, the heating well is fixedly connected to the ignition mechanism and is located on a side of the ignition mechanism away from the fuel tank, the output end of the combustion-supporting fan is fixedly connected to the heating well and is located on one side of the heating well, the heat insulation device is fixedly connected to the heating well and is located on one side of the heating well, and is characterized in that: Also included are auxiliary components; The auxiliary components include a placement plate, a support frame, a frame, a spring, a clamping plate, a housing and a heat exchanger body; The placement plate is fixedly connected to the combustion-supporting fan and is located at the bottom of the combustion-supporting fan. The support frame is fixedly connected to the placement plate and is located at the bottom of the placement plate. The frame is fixedly connected to the placement plate and is located on a side of the placement plate close to the combustion-supporting fan. The spring is fixedly connected to the frame and is located on one side of the frame. The clamping plate is fixedly connected to the spring and is located on the side of the spring. The outer shell is slidably connected to the clamping plate and is located on one side of the clamping plate. The heat exchanger body is fixedly connected to the outer shell and is located on one side of the outer shell.

2. A soil thermal desorption burner as claimed in claim 1, characterized in that: The auxiliary component also includes a connecting rod and a placement frame, wherein the connecting rod is rotatably connected to the placement plate and is located on one side of the placement plate, and the placement frame is fixedly connected to the connecting rod and is located on a side of the connecting rod away from the placement plate.

3. A soil thermal desorption burner as claimed in claim 2, characterized in that: The auxiliary component also includes a fixing frame and bolts. The fixing frame is fixedly connected to the heating well and is located on one side of the heating well. The bolts are threadedly connected to the heating well and pass through the fixing frame.

4. A soil thermal desorption burner as claimed in claim 3, characterized in that: The auxiliary component also includes a protection mechanism, and the protection mechanism is arranged on one side of the placement plate.

5. A soil thermal desorption burner as claimed in claim 4, characterized in that: The protection mechanism comprises a rotating frame and a cover plate, wherein the rotating frame is fixedly connected to the shell and is located at one side of the shell, and the cover plate is rotatably connected to the rotating frame and is located at one side of the rotating frame.

6. A soil thermal desorption burner as claimed in claim 5, characterized in that: The protection mechanism also includes a locking ring and a locking block, wherein the locking ring is fixedly connected to the cover plate and is located on a side of the cover plate away from the rotating frame, and the locking block is fixedly connected to the shell and slidably connected to the locking ring and is located on one side of the shell.

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