An efficient low-carbon thermal stability system

Abstract

The present invention discloses an efficient low-carbon heat stability system, which includes a heat source generation module and a heat exchanger. The heat exchanger is located below the ground. The heat source generation module and the heat exchanger are interconnected through pipelines to form a loop. A power device is arranged on the pipeline, and the power device provides power for the medium flow in the heat source generation module and the heat exchanger. The heat exchanger includes a plurality of heating units arranged side by side, and the heating units are arranged vertically. The system further includes a controller and a temperature acquisition device. The temperature acquisition device is located between two adjacent heating units. The temperature acquisition device is used to acquire the temperature of the soil between the heating units. Both the temperature acquisition device and the power device are electrically connected to the controller. When the temperature of the soil between the heating units is lower than the threshold value, the controller controls the power device to accelerate the medium flow rate in the heat source generation module and the heat exchanger. It realizes the low energy consumption of in-situ thermal technology and the combination with multiple technologies, and uses clean energy to precisely heat the soil.

Description

Technical Field

[0001] The present invention relates to an efficient low-carbon thermal stability system, belonging to the technical field of soil remediation. Background Art

[0002] Soil and groundwater are important material bases for human production activities. With the rapid development of China's economy and society, a large amount of urban domestic waste, industrial "three wastes", pesticides, chemicals and other substances have entered the soil and groundwater environment, resulting in an increasingly serious pollution situation in regional soil and groundwater. In order to reduce or remove the pollution in soil and groundwater, significant progress has been made in remediation technologies such as solidification / stabilization, chemical oxidation, chemical reduction, ex-situ thermal desorption, in-situ thermal desorption, and multi-phase extraction, and they have been applied to the actual remediation of polluted soil and groundwater.

[0003] Among them, the in-situ thermal desorption technology can quickly remove pollutants with high removal efficiency, is not restricted by formation heterogeneity, etc., and has broad application prospects. However, it has defects such as high energy consumption during its use. Summary of the Invention

[0004] The purpose of the present invention is to provide an efficient low-carbon thermal stability system, which combines an in-situ injection and transportation module to achieve low energy consumption of the in-situ thermal technology and its combination with multiple technologies, and uses clean energy to precisely heat the soil, and can provide different temperatures for different remediation technologies.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions:

[0006] An efficient low-carbon thermal stability system includes a heat source generation module and a heat exchanger. The heat exchanger is located below the ground. The heat source generation module and the heat exchanger are interconnected through pipelines to form a loop; a power device is provided on the pipeline, and the power device provides power for the medium flow in the heat source generation module and the heat exchanger; the heat exchanger includes a number of heating units arranged side by side, and the heating units are arranged vertically; the system also includes a controller and a temperature acquisition device. The temperature acquisition device is located between two adjacent heating units, and the temperature acquisition device is used to acquire the temperature of the soil between the heating units. Both the temperature acquisition device and the power device are electrically connected to the controller; when the temperature of the soil between the heating units is lower than the threshold, the controller controls the power device to accelerate the medium flow rate in the heat source generation module and the heat exchanger.

[0007] In the foregoing efficient low-carbon thermal stability system, each heating unit includes a number of heating groups arranged in parallel. The water inlet of the heating group is connected to the water outlet of the power device, and the water outlet of the heating group is connected to the water inlet of the power device; each heating group includes a horizontally arranged connecting pipe and a vertically arranged capillary tube. The connecting pipe and the capillary tube are connected, and the inner diameter of the connecting pipe is larger than that of the capillary tube.

[0008] In the aforementioned efficient low-carbon heat-stable system, the heat source generation module is a solar collector, the inner diameter of the connecting pipe is 10 to 20 cm, the inner diameter of the capillary tube is 1 to 2 cm, and the power device is a water pump.

[0009] In the aforementioned efficient low-carbon heat-stable system, the capillary tube includes an outer casing and an inner casing, and the inner casing is sleeved inside the outer casing; an outer liquid outlet is provided on the outer casing, and an inner liquid outlet is provided at a position corresponding to the outer liquid outlet on the inner casing, and the outer liquid outlet and the inner liquid outlet have the same structure; a perforation is provided on the top cover of the outer casing, a connecting rod is connected inside the inner casing, the connecting rod is coaxially arranged with the inner casing, the connecting rod is connected to the inner wall of the inner casing through a support rod, and the connecting rod passes through the perforation; one end of the connecting rod is located outside the outer casing, and a gear is provided at one end of the connecting rod located outside the outer casing, and the gear is connected to a driving motor through a transmission belt; the media in the heat source generation module and the heat exchanger are nutrient agents and / or repair agents for soil repair. By controlling the driving motor to drive the gear to rotate, the inner casing and the outer casing rotate relatively, so that the inner liquid outlet on the inner casing coincides with the outer liquid outlet on the outer casing, and the nutrient agent and / or repair agent are replenished into the soil through the inner liquid outlet and the outer liquid outlet. After the replenishment is completed, the driving motor is controlled to stagger the inner liquid outlet and the outer liquid outlet, and the nutrient agent and / or repair agent cannot pass through the inner liquid outlet and the outer liquid outlet.

[0010] In the aforementioned efficient low-carbon heat-stable system, a first bearing is provided at the upper end of the outer casing, the lower end of the outer ring of the first bearing is fixed on the outer wall of the outer casing, and the connecting rod is fixed on the inner ring of the first bearing; a second bearing is provided at the bottom inside the outer casing, the outer ring of the second bearing is fixed on the inner wall of the outer casing, and the lower end of the connecting rod is fixed on the inner ring of the second bearing.

[0011] In the aforementioned efficient low-carbon heat-stable system, a non-woven fabric is covered on the outer casing, and the non-woven fabric covers the outer liquid outlet; the capillary tubes are arranged in rows, and the gears of the capillary tubes in the same row are connected to the driving motor through the same transmission belt.

[0012] In the aforementioned efficient low-carbon heat-stable system, the distance between adjacent heating units is 100 cm, and the distance between adjacent capillary tubes is 25 cm.

[0013] Compared with the prior art, the present invention combines an in-situ injection and transportation module to achieve low energy consumption of in-situ thermal technology and the combination with multiple technologies, uses clean energy to precisely heat the soil, and can provide different temperatures for different repair technologies. One set of system can realize two functions of in-situ heating and in-situ injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0015] Figure 2 is Figure 1 a partially enlarged view of;

[0016] Figure 3 is a schematic structural view of an embodiment of the heating group;

[0017] Figure 4 is a schematic structural view of an embodiment of the capillary tube and the connecting pipe;

[0018] Figure 5 is a schematic structural view of an embodiment of the outer casing;

[0019] Figure 6 is a schematic structural view of an embodiment of the inner casing.

[0020] Reference numerals: 1 - temperature acquisition device, 2 - heating unit, 3 - controller, 4 - power device, 5 - heat source generation module, 6 - heating group, 7 - heat exchanger, 8 - transmission belt, 9 - connecting pipe, 10 - capillary tube, 11 - first bearing, 12 - perforation, 13 - top cover, 14 - external liquid outlet, 15 - gear, 16 - connecting rod, 17 - support rod, 18 - inner casing, 19 - inner liquid outlet, 20 - outer casing.

[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. Specific Embodiments

[0022] Embodiment 1 of the present invention: An efficient low-carbon heat-stable system includes a heat source generation module 5 and a heat exchanger 7. The heat exchanger 7 is located below the ground. The heat source generation module 5 and the heat exchanger 7 are interconnected through pipelines to form a loop. A power device 4 is provided on the pipeline. The power device 4 provides power for the medium flow in the heat source generation module 5 and the heat exchanger 7, and the power device 4 can provide a pressure of 0 - 25 Mpa. The heat exchanger 7 includes a plurality of heating units 2 arranged side by side, and the heating units 2 are arranged vertically. The system further includes a controller 3 and a temperature acquisition device 1. The temperature acquisition device 1 is located between two adjacent heating units 2. The temperature acquisition device 1 is used to acquire the temperature of the soil between the heating units 2. Both the temperature acquisition device 1 and the power device 4 are electrically connected to the controller 3. When the temperature of the soil between the heating units 2 is lower than the threshold value, the controller 3 controls the power device 4 to accelerate the medium flow rate in the heat source generation module 5 and the heat exchanger 7, thereby adjusting the temperature of the soil, and further enabling the system to be applicable to different remediation technologies.

[0023] As one of the implementable embodiments, the heating unit 2 includes a number of heating groups 6 arranged in parallel. The water inlet of the heating group 6 is communicated with the water outlet of the power device 4, and the water outlet of the heating group 6 is communicated with the water inlet of the power device 4. The power device 4 is also communicated with the heat source generation module 5, and the medium in the heat source generation module 5 is introduced into the ground through the heating group 6 to heat the soil; the heating group 6 includes a horizontally arranged communicating pipe 9 and a vertically arranged capillary 10. The communicating pipe 9 and the capillary 10 are communicated, and the inner diameter of the communicating pipe 9 is larger than that of the capillary 10. The materials of the communicating pipe 9 and the capillary 10 are both stainless steel, graphene, etc. The heat source generation module 5 is a solar collector, the inner diameter of the communicating pipe 9 is 10 to 20 cm, the inner diameter of the capillary 10 is 1 to 2 cm, and the power device 4 is a water pump.

[0024] The capillary 10 includes an outer sleeve 20 and an inner sleeve 18. The inner sleeve 18 is sleeved inside the outer sleeve 20; the outer sleeve 20 has an outer liquid outlet 14, and the inner sleeve 18 has an inner liquid outlet 19 at a position corresponding to the outer liquid outlet 14. The outer liquid outlet 14 and the inner liquid outlet 19 have the same structure; the top cover 13 of the outer sleeve 20 has a through hole 12, and a connecting rod 16 is connected inside the inner sleeve 18. The connecting rod 16 is coaxially arranged with the inner sleeve 18, and the connecting rod 16 is connected to the inner wall of the inner sleeve 18 through a support rod 17. The connecting rod 16 passes through the through hole 12; one end of the connecting rod 16 is located outside the outer sleeve 20, and a gear 15 is arranged at one end of the connecting rod 16 located outside the outer sleeve 20. The gear 15 is connected to a driving motor through a transmission belt 8; the medium in the heat source generation module 5 and the heat exchanger 7 is a nutrient agent and / or a repair agent for soil repair. By controlling the driving motor to drive the gear 15 to rotate, the inner sleeve 18 and the outer sleeve 20 rotate relative to each other, so that the inner liquid outlet 19 on the inner sleeve 18 coincides with the outer liquid outlet 14 on the outer sleeve 20, and the nutrient agent and / or the repair agent is replenished into the soil through the inner liquid outlet 19 and the outer liquid outlet 14. After the replenishment is completed, the driving motor is controlled to stagger the inner liquid outlet 19 and the outer liquid outlet 14, so that the nutrient agent and / or the repair agent cannot pass through the inner liquid outlet 19 and the outer liquid outlet 14. Therefore, the operation mode of the system can be switched by controlling the driving motor, and the system can be switched to the heat exchange mode or the mode of supplementing the soil with the agent. In the heat exchange mode, the inner liquid outlet 19 and the outer liquid outlet 14 are staggered, and the nutrient agent and / or the repair agent cannot pass through the inner liquid outlet 19 and the outer liquid outlet 14, and can only circulate in the heat source generation module 5 and the heat exchanger 7 to heat the soil. When in the mode of supplementing the soil with the agent, the inner liquid outlet 19 coincides with the outer liquid outlet 14 on the outer sleeve 20, and the nutrient agent and / or the repair agent is replenished into the soil through the inner liquid outlet 19 and the outer liquid outlet 14.

[0025] To improve the stability of the capillary tube and enable the outer sleeve 20 and the inner sleeve to rotate relative to each other smoothly, a first bearing 11 is provided at the upper end of the outer sleeve 20. The lower end of the outer ring of the first bearing 11 is fixed to the outer wall of the outer sleeve 20, and the connecting rod 16 is fixed to the inner ring of the first bearing 11. A second bearing is provided at the bottom inside the outer sleeve 20. The outer ring of the second bearing is fixed to the inner wall of the outer sleeve 20, and the lower end of the connecting rod 16 is fixed to the inner ring of the second bearing.

[0026] To prevent soil from entering between the outer sleeve 20 and the inner sleeve and causing blockage during the rotation of the outer sleeve 20 and the inner sleeve, a non-woven fabric is wrapped around the outer sleeve 20, and the non-woven fabric covers the external liquid outlet 14. The capillary tubes 10 are arranged in rows, and the gears 15 of the capillary tubes 10 in the same row are connected to the driving motor through the same transmission belt 8. Preferably, the distance between adjacent heating units 2 is 100 cm, and the distance between adjacent capillary tubes 10 is 25 cm.

Claims

1. An efficient and low-carbon thermal stability system, characterized in that, It includes a heat source generation module (5) and a heat exchanger (7). The heat exchanger (7) is located below the ground. The heat source generation module (5) and the heat exchanger (7) are interconnected through pipelines to form a loop. A power device (4) is provided on the pipeline, and the power device (4) provides power for the medium flow in the heat source generation module (5) and the heat exchanger (7). The heat exchanger (7) includes a number of heating units (2) arranged side by side, and the heating units (2) are arranged vertically. This system also includes a controller (3) and a temperature acquisition device (1). The temperature acquisition device (1) is located between two adjacent heating units (2). The temperature acquisition device (1) is used to acquire the temperature of the soil between the heating units (2). Both the temperature acquisition device (1) and the power device (4) are electrically connected to the controller (3). When the temperature of the soil between the heating units (2) is lower than the threshold, the controller (3) controls the power device (4) to accelerate the medium flow rate in the heat source generation module (5) and the heat exchanger (7). The heating unit (2) includes a number of heating groups (6) arranged in parallel. The water inlet of the heating group (6) is communicated with the water outlet of the power device (4), and the water outlet of the heating group (6) is communicated with the water inlet of the power device (4). The heating group (6) includes a horizontally arranged connecting pipe (9) and a vertically arranged capillary tube (10). The connecting pipe (9) is communicated with the capillary tube (10), and the inner diameter of the connecting pipe (9) is larger than the inner diameter of the capillary tube (10). The heat source generation module (5) is a solar collector. The inner diameter of the connecting pipe (9) is 10 to 20 cm, the inner diameter of the capillary tube (10) is 1 to 2 cm, and the power device (4) is a water pump. The capillary tube (10) includes an outer sleeve (20) and an inner sleeve (18), and the inner sleeve (18) is sleeved inside the outer sleeve (20); an outer liquid outlet (14) is provided on the outer sleeve (20), and an inner liquid outlet (19) is provided at a position corresponding to the outer liquid outlet (14) on the inner sleeve (18), and the outer liquid outlet (14) and the inner liquid outlet (19) have the same structure; a perforation (12) is provided on the top cover (13) of the outer sleeve (20), a connecting rod (16) is connected inside the inner sleeve (18), the connecting rod (16) is coaxially arranged with the inner sleeve (18), the connecting rod (16) is connected to the inner wall of the inner sleeve (18) through a support rod (17), and the connecting rod (16) passes through the perforation (12); one end of the connecting rod (16) is located outside the outer sleeve (20), a gear (15) is provided at one end of the connecting rod (16) located outside the outer sleeve (20), and the gear (15) is connected to a driving motor through a transmission belt (8); the media in the heat source generation module (5) and the heat exchanger (7) are nutrient agents and / or repair agents for soil remediation. By controlling the driving motor to drive the gear (15) to rotate, the inner sleeve (18) and the outer sleeve (20) rotate relative to each other, so that the inner liquid outlet (19) on the inner sleeve (18) coincides with the outer liquid outlet (14) on the outer sleeve (20), and the nutrient agent and / or repair agent are replenished into the soil through the inner liquid outlet (19) and the outer liquid outlet (14). After the replenishment is completed, the driving motor is controlled to stagger the inner liquid outlet (19) and the outer liquid outlet (14), and the nutrient agent and / or repair agent cannot pass through the inner liquid outlet (19) and the outer liquid outlet (14).

2. An efficient low-carbon thermal stability system according to claim 1, characterized in that, A first bearing (11) is provided at the upper end of the outer sleeve (20), the lower end of the outer ring of the first bearing (11) is fixed on the outer wall of the outer sleeve (20), and the connecting rod (16) is fixed on the inner ring of the first bearing (11); a second bearing is provided at the bottom inside the outer sleeve (20), the outer ring of the second bearing is fixed on the inner wall of the outer sleeve (20), and the lower end of the connecting rod (16) is fixed on the inner ring of the second bearing.

3. An efficient low-carbon thermal stability system according to claim 2, characterized in that, The outer sleeve (20) is covered with a non-woven fabric, and the non-woven fabric covers the outer liquid outlet (14); the capillary tubes (10) are arranged in rows, and the gears (15) of the capillary tubes (10) in the same row are connected to a driving motor through the same transmission belt (8).

4. An efficient low-carbon thermal stability system according to claim 2, characterized in that, The distance between adjacent heating units (2) is 100 cm, and the distance between adjacent capillary tubes (10) is 25 cm.

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