CN210523385U - Device for heating polluted soil in situ by centralized combustion heat supply - Google Patents
Device for heating polluted soil in situ by centralized combustion heat supply Download PDFInfo
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- CN210523385U CN210523385U CN201921593009.2U CN201921593009U CN210523385U CN 210523385 U CN210523385 U CN 210523385U CN 201921593009 U CN201921593009 U CN 201921593009U CN 210523385 U CN210523385 U CN 210523385U
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Abstract
The utility model relates to an accomplish and restore contaminated soil heating device specifically is a device that heat supply formula normal position heating of concentrating to burn pollutes soil, include: the system comprises a gas hot blast stove, a hot air circulating fan, a hot air supply pipeline, a hot air return pipeline, a smoke discharge heat exchange device and a plurality of well-type soil heating pipes; the heating device has the main functions of heating soil in situ, adopting a hot blast stove to perform centralized combustion for heat supply, delivering heat carried by hot air to the well type soil heating pipe through a hot air supply pipeline, returning hot air for completing soil heating through a hot air return pipeline, delivering the hot blast stove to perform circulating heating through a hot air circulating fan, and discharging redundant flue gas after waste heat is recovered by combustion air through a smoke exhaust heat exchange device. The utility model discloses not only reduced installation cost, the equipment control degree of difficulty and gas leakage risk, still promoted the soil zone of heating temperature homogeneity and thermal efficiency, improved the quality after polluting the soil restoration.
Description
Technical Field
The utility model relates to an accomplish and restore contaminated soil heating device, specifically be a device that heat supply formula normal position heating pollutes soil is burnt in concentration.
Background
In recent years, the world countries have come to pay attention to the research of the polluted soil treatment technology, and for treating some areas which are difficult to be developed for environmental remediation, for example: the hot air restoration of heating and cooling of deep soil and the soil under the building is mostly carried out by adopting an in-situ thermal desorption technology. The normal position thermal desorption that commonly uses adopts the gas direct combustion in the stainless steel heating well more, and then heats soil, and the pollutant is heated the pyrolysis or volatilizees gas and is retrieved, accomplishes normal position thermal desorption purpose, and this kind of mode is simple direct, nevertheless leads to the fact great burden, extravagant heating heat to gas collection, processing, needs operating personnel to supervise each heating well gas combustion situation simultaneously moreover to take place local heating inequality, flame-out and gas leakage scheduling problem.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a device for heating polluted soil in situ by a centralized combustion heat supply type, which adopts a heated air circulation heating mode in the structure, and is convenient for monitoring and controlling equipment, reduces the pipeline connection cost, and has high temperature uniformity of a soil heating zone; the waste heat of the combustion flue gas is recovered by heat exchange equipment for secondary utilization, so that the thermal efficiency of the equipment is improved.
In order to achieve the above object, the utility model discloses a following technical scheme realizes:
a device for heating polluted soil in situ by using a centralized combustion heat supply mode comprises a gas hot blast stove hot air circulating fan, a hot air supply pipeline, a hot air return pipeline, a smoke discharge heat exchange device and a plurality of well-type soil heating pipes; one end of the gas hot blast stove is connected with gas, the other end of the gas hot blast stove is connected with a plurality of well-type soil heating pipes through hot air supply pipelines, the well-type soil heating pipes are sleeves, the bottom ends of the outer pipe and the inner pipe of the well-type soil heating pipes are communicated, the outer pipe is provided with an air inlet, and the inner pipe is provided with an air outlet; the air outlet is connected with a hot air return pipeline, the hot air return pipeline is provided with a three-way pipe, one end of the three-way pipe is sequentially connected with a hot air circulating fan and a gas hot air furnace through pipelines, and the other end of the three-way pipe is connected with a smoke discharge heat exchange device through a pipeline.
Furthermore, one end of the gas hot blast stove, which is connected with the gas, is also connected with combustion-supporting air, and the combustion-supporting air is connected with the gas hot blast stove through a smoke discharge heat exchange device by a combustion-supporting fan.
A method for heating polluted soil in situ by a centralized combustion heat supply type is realized by utilizing the device for heating polluted soil in situ by the centralized combustion heat supply type, and the heat carried by hot air is sent to a plurality of well-type soil heating pipes on site by a hot air supply pipeline in a centralized combustion heat supply mode of a hot air furnace; the hot air which completes the soil heating and cooling returns from the heating well pipe through the hot air return pipeline, one part is sent into the hot blast stove for circular heating by the hot air circulating fan, the other part of redundant flue gas is discharged by the smoke discharge heat exchange device, and the flue gas waste heat is recovered by the combustion air of the hot blast stove through the smoke discharge heat exchange device.
Compared with the prior art, the utility model discloses have as follows and show the effect:
1. the heating device adopts centralized combustion for heat supply, so that the monitoring and the operation are easy, the safety and the reliability are realized, and the labor is saved;
2. because the heating device adopts hot air circulation heating, the heating temperature difference of the whole heating area is smaller;
3. because the waste heat of the flue gas of the heating device is recovered by the combustion-supporting air of the hot blast stove through the smoke exhaust heat exchanger, the heat efficiency of the system is improved.
Drawings
FIG. 1 is a schematic structural view of a device for heating contaminated soil in situ by using a centralized combustion heat supply method.
Wherein: (1) -well type soil heating pipe, (2) -hot air return pipeline, (3) -hot air supply pipeline, (4) -gas hot blast stove, (5) -hot air circulating fan, (6) -smoke exhaust heat exchange device, (7) -combustion fan.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
As shown in fig. 1, in the device for heating contaminated soil in situ by centralized combustion and heat supply of the embodiment of the present invention, the right end of a gas hot-blast stove 4 is connected with gas, the left air outlet is connected with a plurality of well-type soil heating pipes 1 through a hot air supply pipeline 3, the well-type soil heating pipes 1 are sleeves, the bottom ends of the outer pipe and the inner pipe are communicated, the upper end of the side wall of the outer pipe is provided with an air inlet, and the upper end of the inner pipe is provided with an air outlet; the air outlet is connected with a hot air return pipeline 2, the hot air return pipeline 2 is provided with a three-way pipe, the downward branch of the three-way pipe is sequentially connected with a hot air circulating fan 5 and a gas hot air furnace 4 through pipelines, and the horizontal branch end is connected with a smoke exhaust heat exchange device 6 through a pipeline.
The soil heating device for central combustion heat supply has the main functions of heating soil in situ, and adopts a mode of central combustion heat supply of a hot blast stove 4 to send heat carried by hot blast to a plurality of well type soil heating pipes 1 on site through a hot blast air supply pipeline 3; the hot air cooled after heat transfer returns from the well-type soil heating pipe 1 through the hot air return pipeline 2, one part of the hot air is sent into the hot air furnace 4 by the hot air circulating fan 5 for circulating heating, and the other part of the redundant flue gas is discharged through the smoke discharge heat exchange device 6.
In this embodiment, the end of the gas hot blast stove 4 connected to the gas is further connected to combustion-supporting air, the combustion-supporting air is connected to the gas hot blast stove 4 through the smoke exhaust heat exchange device 6 by the combustion-supporting fan 7, and when the flue gas is exhausted through the smoke exhaust heat exchange device 6, the flue gas waste heat is recovered by the combustion-supporting air sent into the gas hot blast stove 4 by the combustion-supporting fan 7 through the smoke exhaust heat exchanger 6, so as to complete the preheating of the combustion-supporting air.
The device of the embodiment is used for a method for heating polluted soil in situ by a centralized combustion heat supply mode, namely, a hot blast stove 4 is adopted for supplying heat by centralized combustion, so that heat carried by hot blast is sent to a plurality of well-type soil heating pipes 1 on site through a hot blast air supply pipeline 3; the hot air which completes the soil heating and cooling returns from the well type soil heating pipe 1 through the hot air return pipeline 2, one part of the hot air is sent into the hot air furnace 4 by the hot air circulating fan 5 for circulating heating, the other part of the redundant flue gas is discharged through the smoke discharging heat exchange device 6, and the flue gas waste heat is recovered by the combustion air of the hot air furnace 4 through the smoke discharging heat exchange device 6.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (2)
1. The utility model provides a device of contaminated soil of central combustion heat supply formula normal position heating which characterized in that includes: the device comprises a gas hot blast stove (4), a hot air circulating fan (5), a hot air supply pipeline (3), a hot air return pipeline (2), a smoke discharge heat exchange device (6) and a plurality of well type soil heating pipes (1); one end of the gas hot blast stove (4) is connected with gas, the other end of the gas hot blast stove is connected with a plurality of well-type soil heating pipes (1) through hot air supply pipelines (3), the well-type soil heating pipes (1) are sleeves, the outer pipe of each well-type soil heating pipe is communicated with the bottom end of the inner pipe, the outer pipe is provided with an air inlet, and the inner pipe is provided with an air outlet; the air outlet is connected with a hot air return pipeline (2), the hot air return pipeline (2) is provided with a three-way pipe, one end of the three-way pipe is sequentially connected with a hot air circulating fan (5) and a gas hot blast stove (4) through a pipeline, and the other end of the three-way pipe is connected with a smoke exhaust heat exchange device (6) through a pipeline.
2. The device for heating polluted soil in situ by using a centralized combustion heat supply manner as claimed in claim 1, wherein: the gas hot blast stove is characterized in that one end, connected with gas, of the gas hot blast stove (4) is also connected with combustion-supporting air, and the combustion-supporting air is connected with the gas hot blast stove (4) through a smoke discharge heat exchange device (6) by a combustion-supporting fan (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921593009.2U CN210523385U (en) | 2019-09-24 | 2019-09-24 | Device for heating polluted soil in situ by centralized combustion heat supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921593009.2U CN210523385U (en) | 2019-09-24 | 2019-09-24 | Device for heating polluted soil in situ by centralized combustion heat supply |
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| CN210523385U true CN210523385U (en) | 2020-05-15 |
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| CN201921593009.2U Active CN210523385U (en) | 2019-09-24 | 2019-09-24 | Device for heating polluted soil in situ by centralized combustion heat supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110523761A (en) * | 2019-09-24 | 2019-12-03 | 广州威立雅固废能源技术有限公司 | A kind of device and method of concentrated combustion heat-supply type In Situ Heating contaminated soil |
-
2019
- 2019-09-24 CN CN201921593009.2U patent/CN210523385U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110523761A (en) * | 2019-09-24 | 2019-12-03 | 广州威立雅固废能源技术有限公司 | A kind of device and method of concentrated combustion heat-supply type In Situ Heating contaminated soil |
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