CN210208077U - Heat transfer device for in-situ thermal desorption soil remediation - Google Patents
Heat transfer device for in-situ thermal desorption soil remediation Download PDFInfo
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- CN210208077U CN210208077U CN201920718715.9U CN201920718715U CN210208077U CN 210208077 U CN210208077 U CN 210208077U CN 201920718715 U CN201920718715 U CN 201920718715U CN 210208077 U CN210208077 U CN 210208077U
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model relates to a heat transfer device for in-situ thermal desorption soil remediation, which comprises a heat transfer pipe with a closed bottom, wherein a sealing cover plate covers an upper pipe orifice of the heat transfer pipe, and heat transfer liquid is arranged inside the heat transfer pipe; the heat conduction liquid is filled in the sealing cover plate, and the bottom of the sealing cover plate is immersed in the heat conduction liquid. The utility model discloses a liquid heat-conducting liquid is especially high temperature conduction oil as heat transfer medium, and heat conduction and heat dissipation that can be fine make soil temperature evenly rise, have changed the single-pass heat transfer of traditional heating well casing, and heat transfer medium dwell time is short, shortcoming such as the thermal efficiency is low. Meanwhile, the heat-conducting liquid can offset the soil pressure outside the pipe, so that the pipe wall is protected, and the heating pipe is not easy to bend in the construction and heating operation processes.
Description
Technical Field
The utility model discloses a be used for prosthetic heat transfer device of normal position thermal desorption soil belongs to the technical field who pollutes soil prosthetic devices.
Background
Persistent Organic Pollutants (POPs) are natural or synthetic Organic Pollutants that persist in the environment and pose serious hazards to human health and the environment, have a long half-life, can migrate long distances and exist in the environment for a long time, and have long-term residue, bioaccumulation, volatility, semi-volatility and high toxicity.
The in-situ thermal desorption technology plays an important role in the process of treating and repairing organic contaminated soil, and the technology heats the contaminated soil to be above the boiling point of a target pollutant in the modes of steam, fuel gas, resistance heating or heat conduction heating and the like, and selectively promotes the volatilization of the pollutant by controlling the temperature and the heating time of a system so as to separate and remove the target pollutant from soil particles. After the pollutant is converted into gas state, the fluidity of the pollutant is greatly improved, and the volatilized gas product is collected and captured for purification treatment.
The traditional in-situ thermal desorption additional heating device adopts a sleeve structure. The heat transfer medium is steam, single-pass heat transfer is generally adopted, the residence time of the heat transfer medium is short, and the thermal efficiency is low. The rigidity of the outer pipe is poor, no medium balanced with soil pressure exists in the pipe, the outer pipe is often subjected to soil pressure, and the outer pipe is easy to bend.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at overcoming above-mentioned not enough, propose a heat transfer device for normal position thermal desorption soil is restoreed, change the problem that the thermal efficiency of traditional heating pipe is low, inside and outside pipe pressure is unbalanced.
The utility model discloses technical scheme as follows:
a heat transfer device for in-situ thermal desorption soil remediation comprises a heat transfer pipe, wherein the bottom of the heat transfer pipe is closed, a sealing cover plate covers an upper pipe orifice, and heat transfer liquid is arranged in the heat transfer pipe; the heat conduction liquid is filled in the sealing cover plate, and the bottom of the sealing cover plate is immersed in the heat conduction liquid.
Preferably comprising an above-ground part and a buried soil layer part, the above-ground part being 15-25 cm.
Preferably, the heat transfer pipe is a seamless steel pipe.
Preferably, the sealing cover plate and the seamless steel pipe are connected by a flange, and a rubber ring is arranged between the cover plate and the seamless steel pipe and is fastened by a flange bolt.
Preferably, the heat conducting liquid is high-temperature heat conducting oil.
The preferred heater and thermometer employ a resistance heating tube and a stainless steel temperature sleeve.
The utility model has the advantages as follows:
the utility model discloses a heating device adopts liquid heat-conducting liquid especially high temperature conduction oil as heat transfer medium, and heat conduction and heat dissipation that can be fine make soil temperature evenly rise, have changed the one-way heat transfer of traditional heating well casing, and heat transfer medium dwell time is short, shortcoming such as the thermal efficiency is low. Meanwhile, the heat-conducting liquid can offset the soil pressure outside the pipe, so that the pipe wall is protected, and the heating pipe is not easy to bend in the construction and heating operation processes.
Drawings
Fig. 1 is a schematic view of the structure of a heat transfer device.
Fig. 2 is a plan view of the structure of the heat transfer device.
The reference numbers in the figure are as follows:
1-resistance heating tube, 2-stainless steel temperature measuring sleeve,
3-seamless steel pipe, 4-high temperature heat conducting oil,
5-sealing cover plate, 6-flange bolt.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings. Examples
Referring to fig. 1 and 2, in the present embodiment, a heat transfer device for in-situ thermal desorption soil remediation includes a seamless steel tube 3 with a diameter of 108mm, a wall thickness of 4.5mm, and a length of 3200mm as a heat transfer tube, the lower end of the tube is closed, the upper end of the tube is provided with a sealing cover plate 5, two through holes are formed in the sealing cover plate, one through hole is used for inserting a resistance heating tube 1, another through hole is used for placing a stainless steel temperature measurement sleeve 2 after high temperature heat transfer oil 4 is added into the seamless steel tube 3, a thermometer is placed in the sleeve, the resistance heating tube 1 and the stainless steel temperature measurement sleeve 2 are both inserted into the high temperature heat transfer oil, and. The thermal desorption heat transfer device can be designed to have a length according to needs, the upper part of the thermal desorption heat transfer device is 20cm above the ground, and the lower part of the thermal desorption heat transfer device is integrally embedded in a soil layer.
In order to prevent the high-temperature heat conduction oil from volatilizing and ensure the optimal heating effect, a rubber ring is arranged between the sealing cover plate 5 and the high-temperature heat conduction oil 4 and is fastened by a flange bolt 6. Therefore, the medium is favorable for quick temperature rise, and the effects of heat preservation and heat transfer can be achieved.
When the high-temperature heat transfer oil well pipe is used, the high-temperature heat transfer oil 4 is heated through the resistance heating pipe 1, the high-temperature heat transfer oil 4 is used as a heat transfer medium, heat is transferred to soil, the temperature of the soil is continuously and uniformly raised, and the defects of one-way heat transfer of a traditional heating well pipe, short retention time of the heat transfer medium, low heat efficiency and the like are overcome. Meanwhile, the heat-conducting liquid can offset the soil pressure outside the pipe, so that the pipe wall is protected, and the heating pipe is not easy to bend in the construction and heating operation processes.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (6)
1. A heat transfer device for in-situ thermal desorption soil remediation is characterized by comprising a heat transfer pipe, wherein the bottom of the heat transfer pipe is closed, a sealing cover plate covers an upper pipe orifice, and heat transfer liquid is arranged in the heat transfer pipe; the heat conduction liquid is filled in the sealing cover plate, and the bottom of the sealing cover plate is immersed in the heat conduction liquid.
2. The heat transfer device for in-situ thermal desorption soil remediation as claimed in claim 1, wherein the heat transfer device comprises an overground part and a buried soil layer part, and the overground part is 15-25 cm.
3. The heat transfer device for in-situ thermal desorption soil remediation as claimed in claim 1, wherein the heat transfer pipe is a seamless steel pipe.
4. The heat transfer device for in-situ thermal desorption soil remediation as claimed in claim 3, wherein the sealing cover plate and the seamless steel pipe are connected by flanges, and a rubber ring is arranged between the cover plate and the seamless steel pipe and fastened by flange bolts.
5. The heat transfer device for in-situ thermal desorption soil remediation as claimed in claim 1, wherein the heat transfer fluid is a high temperature heat transfer oil.
6. The heat transfer device for in-situ thermal desorption soil remediation as claimed in claim 1, wherein the heater and the thermometer are resistance heating tubes and stainless steel temperature sleeve tubes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920718715.9U CN210208077U (en) | 2019-05-20 | 2019-05-20 | Heat transfer device for in-situ thermal desorption soil remediation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920718715.9U CN210208077U (en) | 2019-05-20 | 2019-05-20 | Heat transfer device for in-situ thermal desorption soil remediation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210208077U true CN210208077U (en) | 2020-03-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920718715.9U Active CN210208077U (en) | 2019-05-20 | 2019-05-20 | Heat transfer device for in-situ thermal desorption soil remediation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022088327A1 (en) * | 2020-10-26 | 2022-05-05 | 无锡德林海环保科技股份有限公司 | Trap-type sludge in-situ treatment device and method |
-
2019
- 2019-05-20 CN CN201920718715.9U patent/CN210208077U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022088327A1 (en) * | 2020-10-26 | 2022-05-05 | 无锡德林海环保科技股份有限公司 | Trap-type sludge in-situ treatment device and method |
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