CN214184580U - Heating well structure of in-situ gas thermal desorption system - Google Patents
Heating well structure of in-situ gas thermal desorption system Download PDFInfo
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- CN214184580U CN214184580U CN202023055084.9U CN202023055084U CN214184580U CN 214184580 U CN214184580 U CN 214184580U CN 202023055084 U CN202023055084 U CN 202023055084U CN 214184580 U CN214184580 U CN 214184580U
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- thermal desorption
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- 238000003795 desorption Methods 0.000 title claims abstract description 22
- 238000010438 heat treatment Methods 0.000 title claims description 57
- 238000011065 in-situ storage Methods 0.000 title claims description 14
- 238000012544 monitoring process Methods 0.000 claims abstract description 26
- 239000002689 soil Substances 0.000 claims abstract description 23
- 239000000779 smoke Substances 0.000 claims abstract description 17
- 238000004321 preservation Methods 0.000 claims abstract description 12
- 238000002485 combustion reaction Methods 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 238000000605 extraction Methods 0.000 claims description 32
- 229910001220 stainless steel Inorganic materials 0.000 claims description 14
- 238000009413 insulation Methods 0.000 claims description 13
- 238000005192 partition Methods 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 8
- 230000002349 favourable effect Effects 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 235000019504 cigarettes Nutrition 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 17
- 238000000034 method Methods 0.000 description 12
- 239000010935 stainless steel Substances 0.000 description 9
- 238000005516 engineering process Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000005067 remediation Methods 0.000 description 5
- 239000011449 brick Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000006004 Quartz sand Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000000053 physical method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011066 ex-situ storage Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a heated well structure of normal position gas thermal desorption system, including polluting soil, heat preservation and insulating layer are located the top of polluting soil, are provided with the heated well in heat preservation and the insulating layer respectively, extract well and monitoring well, and the heated well, extract well and monitoring well all pass heat preservation and insulating layer and extend to in polluting soil, the heated well is the cylinder structure, and the inside baffle that is provided with of heated well falls into combustion chamber and smoke exhaust chamber through inside baffle, and the bottom sealing connection of heated well has the pipe cap, and the row's of being connected cigarette mouth is connected in the upper portion outside of smoke exhaust chamber, is the export of burning exhaust emission. The utility model discloses simplify the complex structure of outer pipe box inner tube in traditional design, be favorable to energy saving and consumption reduction, reduced construction steps, promoted work efficiency.
Description
Technical Field
The utility model relates to a heating well system specifically is a heating well structure of normal position gas thermal desorption system.
Background
The organic contaminated soil removal method comprises a physical method, a chemical method and a biological method, wherein the physical method is mainly applied to a thermal desorption technology and a gas phase extraction technology, wherein the thermal desorption technology can be divided into an in-situ remediation technology and an ex-situ remediation technology, the in-situ thermal desorption technology is well suitable for the soil with low permeability and deep pollution depth, and the method has the advantages of wide remediation range, high treatment efficiency and the like. The technology is mainly characterized in that organic pollutants in the soil are heated to a boiling point and then evaporated out in a heating and warming mode, then the gas pollutants are subjected to centralized treatment after separation and collection, and the soil after remediation can be reused, so that the technology is a remediation technology with a wide prospect.
Through the actual research to normal position gas thermal desorption system, it is main to discover that current gas thermal desorption system heater well structure is mainly managed in the interior sleeve pipe of outer sleeve pipe collocation, has some shortcomings in the actual motion in-process, and the content is as follows:
the traditional heating well structure is an outer sleeve inner pipe, the outer sleeve needs to be put down firstly in the construction process, then the inner pipe is put down, the pipe putting down process is separately carried out, and the process is complicated. The length of the inner pipe and the outer pipe is large under the soil with deep repairing depth, the material investment of the inner pipe structure of the outer pipe sleeve is large, instruments such as a crane are needed in the process of lowering the inner pipe, the investment is high, and the cost is not saved.
Therefore, the utility model provides a heating well structure of normal position gas thermal desorption system to solve the problem that proposes in the above-mentioned background art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a heating well structure of normal position gas thermal desorption system to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
the heating well structure of the in-situ gas thermal desorption system comprises contaminated soil, a heat preservation layer and a heat insulation layer, and is characterized in that the heat preservation layer and the heat insulation layer are located above the contaminated soil, the heating well, the extraction well and the monitoring well are arranged in the heat preservation layer and the heat insulation layer respectively, and the heating well, the extraction well and the monitoring well penetrate through the heat preservation layer and the heat insulation layer and extend into the contaminated soil.
As a further aspect of the present invention: the heating well is of a cylindrical structure, a partition plate is arranged in the heating well and is divided into a combustion chamber and a smoke exhaust chamber through the internal partition plate, the bottom of the heating well is hermetically connected with a pipe cap, and the outer side of the upper part of the smoke exhaust chamber is connected with a smoke exhaust port which is an outlet for discharging combustion waste gas; the heating well is a cylindrical stainless steel pipe with the inner diameter of 100-130mm and the thickness of 4-5mm, and is divided into a heating chamber and a smoke discharge chamber by a stainless steel layer.
As a further aspect of the present invention: the burner is installed on the heating well, the ignition device is installed in the center of the combustion chamber in the heating well, and the top of the heating well is connected with the bottom of the burner in a sealing mode.
As a further aspect of the present invention: the extraction well is of a three-dimensional cylindrical structure, a pipe cap is arranged at the bottom of the extraction well, a plurality of cutting seams with a certain number and depth are equidistantly cut on the pipe wall of the extraction well, and two layers of stainless steel wire meshes are uniformly wrapped at the cutting seams to prevent soil particles from entering the extraction well in the system operation process; the extraction well is a cylindrical stainless steel pipe with the inner diameter of 50-60mm and the thickness of 2-4 mm.
As a further aspect of the present invention: the upper end of the extraction well is communicated with an extraction device and a separation device for carrying out subsequent treatment on the extracted steam and the polluted gas.
As a further aspect of the present invention: the monitoring well is of a cylindrical structure, the bottom of the monitoring well is provided with a pipe cap for connection, the top of the monitoring well is provided with a monitor, and the monitoring well is mainly provided with a temperature and pressure monitoring device, so that the monitoring of the soil temperature and pressure is realized; the monitoring well is a cylindrical stainless steel pipe, the inner diameter of the monitoring well is 50-60mm, and the thickness of the monitoring well is 2-4 mm.
As a further aspect of the present invention: the heat-insulating layer comprises quartz sand and heat-insulating bricks, the thickness of the heat-insulating layer is 100-150cm, and the heat loss in the heating process is reduced; the heat insulation layer is positioned on the heat insulation layer, is a concrete layer, has the thickness of 200-250mm, reduces heat loss and ensures the safety of the ground surface working environment.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model changes the structural design of the inner pipe of the outer pipe sleeve of the original heating well into the integrated structure of a single well pipe, the middle of the well pipe is separated by stainless steel made of the same material and is divided into a heating chamber and an exhaust chamber, thereby simplifying the construction process of the traditional heating well, changing the construction process of the original heating well that the outer pipe is firstly put into the heating well and then the inner pipe is put into the heating well, and simplifying the construction steps; meanwhile, well pipe materials are greatly saved, and the cost is reduced.
2. The utility model discloses the heating well adopts integral structure, has simplified the complex construction of outer pipe box inner tube in traditional design, is favorable to energy saving and consumption reduction, reduces construction steps, promotes work efficiency
Drawings
Fig. 1 is a schematic structural diagram of a heater well structure of an in-situ gas thermal desorption system.
Fig. 2 is a schematic structural diagram of a heating well in a heating well structure of an in-situ gas thermal desorption system.
In the figure: 1. a heating well; 2. an internal partition; 3. a smoke outlet; 4. a pipe cap; 5. a combustion chamber; 6. a smoke exhaust chamber; 7. a burner; 8. an ignition device; 9. an extraction well; 10. stainless steel wire mesh; 11. slotting; 12. a monitoring well; 13. a heat-insulating layer; 14. a thermal insulation layer; 15. an extraction device and a separation device; 16. a monitor.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-2, in the embodiment of the present invention, a heating well structure of an in-situ gas thermal desorption system includes contaminated soil, a heat insulating layer 13 and a heat insulating layer 14, and is characterized in that the heat insulating layer 13 and the heat insulating layer 14 are located above the contaminated soil, a heating well 1, an extraction well 9 and a monitoring well 12 are respectively arranged in the heat insulating layer 13 and the heat insulating layer 14, the heating well 1, the extraction well 9 and the monitoring well 12 all pass through the heat insulating layer 13 and the heat insulating layer 14 and extend into the contaminated soil, the heat insulating layer 13 includes quartz sand and insulating bricks, and heat loss in a heating process is reduced; the heat insulation layer 14 is located on the heat insulation layer 13, and the heat insulation layer 14 is a concrete layer, so that heat loss is reduced, and the safety of the ground surface working environment is guaranteed.
Further, the heating well 1 is the cylinder structure, and 1 inside baffles 2 that are provided with of heating well divide into combustion chamber 6 and smoke exhaust chamber 6 through inside baffle 2, and the bottom sealing connection of heating well 1 has pipe cap 4, and 6 upper portion outsides in smoke exhaust chamber connect row's mouth 3, are burning exhaust emission's export, install combustor 7 above the heating well 1, 6 central point in the heating well combustion chamber put and install ignition 8, and 1 top of heating well and 7 bottom sealing mode connections of combustor.
Furthermore, the extraction well 9 is of a three-dimensional cylindrical structure, the bottom of the extraction well 9 is provided with a pipe cap 4, the pipe wall of the extraction well 9 is equidistantly cut with a plurality of cutting seams 11 with different numbers and depths, the cutting seams 11 are uniformly wrapped with two layers of stainless steel wire meshes 10, so that soil particles are prevented from entering the inside of the extraction well in the system operation process, the upper end of the extraction well 9 is communicated with an extraction device and a separation device 15, and the extracted steam and the polluted gas are subjected to subsequent treatment.
Further, monitoring well 12 is the cylinder structure, and the bottom of monitoring well 12 is provided with pipe cap 4 and connects, and monitor 16 is installed at the top, mainly installs temperature and pressure monitoring devices, realizes the implementation monitoring to soil temperature and pressure.
The utility model discloses a theory of operation is:
the burner in the utility model has the ignition function, and indirectly heats the soil through the high-temperature gas generated by burning in the heating well; the heating well is a cylindrical stainless steel pipe, the inner diameter is 100-130mm, the thickness is 4-5mm, the middle part is divided into a heating chamber and a smoke exhaust chamber by a stainless steel layer, a burner ignites gas to burn in the heating chamber, and the heated smoke passes through the smoke exhaust chamber through the combustion chamber and is finally exhausted from a smoke exhaust port; the extraction well is a cylindrical stainless steel pipe, the inner diameter of the extraction well is 50-60mm, the thickness of the extraction well is 2-4mm, the extraction well is used for extracting polluted gas and water vapor generated after heating of a polluted site, cutting seams with certain width and depth are uniformly distributed on the wall of the extraction well, and the cutting seams are partially wrapped by a stainless steel wire mesh; the monitoring well is a cylindrical stainless steel pipe, the inner diameter of the monitoring well is 50-60mm, the thickness of the monitoring well is 2-4mm, a temperature and pressure monitor is arranged on the monitoring well, and the temperature and pressure of a repair area are monitored; the thickness of the heat-insulating layer is 100-150cm, and heat-insulating bricks are uniformly laid on the surface of the polluted soil, so that the heat exchange between the heating area and the ground is reduced, and the heat loss is reduced; the insulating layer is the concrete layer, is located on the heat preservation, and thickness is 200 and gives other 250mm, and the purpose reduces the heating zone heat radiation, guarantees earth's surface operational environment's safety.
The heating well of the system adopts an integrated structure, simplifies the complex structure of the inner pipe of the outer pipe sleeve in the traditional design, is favorable for energy conservation and consumption reduction, reduces construction steps and improves the working efficiency.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (7)
1. The utility model provides a heating well structure of normal position gas thermal desorption system, is including polluting soil, heat preservation (13) and insulating layer (14), its characterized in that, heat preservation (13) and insulating layer (14) are located the top of polluting soil, are provided with heating well (1), extraction well (9) and monitoring well (12) in heat preservation (13) and insulating layer (14) respectively, and heating well (1), extraction well (9) and monitoring well (12) all pass heat preservation (13) and insulating layer (14) and extend to in the polluted soil.
2. The heating well structure of an in-situ gas thermal desorption system according to claim 1, wherein the heating well (1) is of a cylindrical structure, the inside of the heating well (1) is provided with a partition plate (2), the heating well (1) is divided into a combustion chamber (5) and a smoke exhaust chamber (6) through the internal partition plate (2), the bottom of the heating well (1) is hermetically connected with a pipe cap (4), and the outer side of the upper part of the smoke exhaust chamber (6) is connected with a smoke exhaust port (3).
3. The heater well structure of the in-situ gas thermal desorption system according to claim 1, wherein a burner (7) is installed on the heater well (1), an ignition device (8) is installed at the central position of the combustion chamber (5) in the heater well (1), and the top of the heater well (1) is connected with the bottom of the burner (7) in a sealing manner.
4. The heater well structure of an in-situ gas thermal desorption system according to claim 1, wherein the extraction well (9) is a three-dimensional cylindrical structure, a pipe cap (4) is arranged at the bottom of the extraction well (9), a plurality of slots (11) with certain number and depth are cut on the pipe wall of the extraction well (9) at equal intervals, and two layers of stainless steel wire meshes (10) are uniformly wrapped at the slots (11).
5. The heater well structure of an in-situ gas thermal desorption system according to claim 3, wherein the upper end of the extraction well (9) is communicated with an extraction device and a separation device (15).
6. The heating well structure of an in-situ gas thermal desorption system according to claim 1, wherein the monitoring well (12) is a cylindrical structure, the bottom of the monitoring well (12) is provided with a pipe cap (4) for connection, and the top is provided with a monitor (16).
7. The heater well structure of an in-situ gas thermal desorption system according to claim 1, wherein the heat insulation layer (14) is positioned on the heat insulation layer (13), and the heat insulation layer (14) is a concrete layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023055084.9U CN214184580U (en) | 2020-12-17 | 2020-12-17 | Heating well structure of in-situ gas thermal desorption system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023055084.9U CN214184580U (en) | 2020-12-17 | 2020-12-17 | Heating well structure of in-situ gas thermal desorption system |
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| Publication Number | Publication Date |
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| CN214184580U true CN214184580U (en) | 2021-09-14 |
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| CN202023055084.9U Expired - Fee Related CN214184580U (en) | 2020-12-17 | 2020-12-17 | Heating well structure of in-situ gas thermal desorption system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116060428A (en) * | 2023-02-20 | 2023-05-05 | 北京建工环境修复股份有限公司 | In-situ gas thermal desorption system for organic contaminated soil |
-
2020
- 2020-12-17 CN CN202023055084.9U patent/CN214184580U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116060428A (en) * | 2023-02-20 | 2023-05-05 | 北京建工环境修复股份有限公司 | In-situ gas thermal desorption system for organic contaminated soil |
| CN116060428B (en) * | 2023-02-20 | 2024-03-12 | 北京建工环境修复股份有限公司 | In-situ gas thermal desorption system for organic contaminated soil |
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Granted publication date: 20210914 |
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| CF01 | Termination of patent right due to non-payment of annual fee |