CN207386152U - Soil thermal desorption processing system - Google Patents
Soil thermal desorption processing system Download PDFInfo
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- CN207386152U CN207386152U CN201721337095.1U CN201721337095U CN207386152U CN 207386152 U CN207386152 U CN 207386152U CN 201721337095 U CN201721337095 U CN 201721337095U CN 207386152 U CN207386152 U CN 207386152U
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Abstract
A kind of soil thermal desorption processing system, for handling the pollutant in soil in place, including being made of the soil being deposited on place and being in the mound of stack, the thermal desorption processing component being embedded in mound and the confining bed for being covered in mound surface；The thermal desorption processing component includes heating tube and extraction tube, respectively being heated to mound and enter the pollutant deviate under high temperature and discharge.Directly soil is stacked into mound, and heating tube and extraction tube are set in mound, soil is heated, the pollutant in soil is discharged, the thermal desorptions processing space such as plenum chamber is dug without ground on the scene, reduces the workload of thermal desorption processing.
Description
Technical field
The utility model belongs to environmental protection treatment technical field more particularly to a kind of soil thermal desorption processing system.
Background technology
Thermal desorption technology belongs to a kind of heat treatment technics, i.e., by heat exchange, the organic pollution in soil is heated to
Sufficient temp so that pollutant is able to volatilize or separate from soil particle, and enters the process of gas processing system.
Domestic common thermal desorption treatment technology is based on dystopy thermal desorption technology at present, i.e., by excavating contaminated soil
It after being transferred to disposal field, is disposed in continuous or intermittent manner, conventionally used occupation area of equipment is larger, in such as city
When city's resettlement chemical plant contaminated site is repaired, the available hardening vacant lot in periphery is less, it tends to be difficult near contaminated site nearby
Processing, therefore the technology is for that can not excavate or place that transportation range is far and can generate in digging process larger different
The place of taste, there are constructional difficulties are big, risk of high cost or triggering social groups form events.
Occur a kind of thermal desorption technology in situ in recent years, to soil without excavating, but thermal energy is introduced directly into ground
Under, whole soil are heated by conduction of heat, then polluted gas is captured and collected by extraction system, to pollution
Place disturbance is small, and required equipment is simple, is not easy to cause secondary pollution.It is but certain due to needing to expend to the thermal desorption processing of soil
Time, thermal desorption in situ processing will occupy the place residing for pending soil, make the place that can not open whithin a period of time
Beginning constructs, and influences the duration of construction.
The prior art《A kind of dystopy thermal desorption processing method of contaminated soil》(publication No.：CN 103203355A) it proposes
A kind of thermal desorption treatment technology for beating heap formula.Contaminated soil is beaten heap by the thermal desorption processing mode, is set below contaminated soil
Put plenum chamber, high-temperature gas be passed through to plenum chamber, the pollutant in soil can be sent, and it is made to discharge therewith, can with compared with
Small floor space carries out contaminated soil the processing of dystopy, does not interfere with the normal construction in place.But the thermal desorption processing side
There are still more deficiencies for method：1st, high-temperature gas is passed directly into soil, and the pollutant in high-temperature gas can be stayed in soil, is formed
Secondary pollution；2nd, need to set plenum chamber, add the workload of thermal desorption processing；3rd, high-temperature gas enters mound from bottom,
It is left again at the top of soil after soil, the path that high-temperature gas is advanced is longer, and mound density is larger, makes gas in mound
Mobility it is poor, pollutant be difficult to all be pulled away, treatment effect is bad.
Utility model content
The utility model for the above-mentioned prior art the technical issues of, propose that a kind of workload is small, will not form secondary dirt
The excellent soil thermal desorption processing system of dye, treatment effect.
In order to achieve the above object, the technical solution adopted in the utility model is：
A kind of soil thermal desorption processing system, for handling the pollutant in soil in place, including by stacking
The soil of ground on the scene forms and is in the mound of stack, the thermal desorption processing component that is embedded in mound and is covered in mound
The confining bed on surface；
The thermal desorption processing component includes heating tube and extraction tube, respectively being heated to mound and to make height
The pollutant of the lower abjection of temperature enters and discharges.
Preferably, the thermal desorption processing component is laterally embedded in the mound, to make heating tube and extraction tube
Cover the cross section of the mound.
Preferably, thermal desorption processing component stacked arrangement in the mound is multigroup.
Preferably, the heating tube and extraction tube setting in same thermal desorption processing component are multiple, and it is aligned to described
On the same section of mound.
Preferably, heating tube and extraction tube are submitted in the same section of the mound in same thermal desorption processing component
For arrangement.
Preferably, the heating tube includes to bury the electrical heating in casing and installation casing in the soil
Device.
Preferably, the heating tube includes can burying casing in the soil and can be in casing
The hot gas delivery pipe of high-temperature gas is sent into described sleeve pipe.
Preferably, the heating tube is buried multiple, the exhaust pipe that the sleeve side walls of heating tube are set passes through pipeline
It is connected with the hot gas delivery pipe of another heating tube, the high-temperature gas the casing of a heating tube to be discharged is transported to separately
In the hot gas delivery pipe of one heating tube.
Preferably, the confining bed includes side seal portion and closedtop portion, the side seal portion is to be covered in the mound side
Cement sand bed on surface, the closedtop portion are laid in rock wool and cement sand bed on the mound top surface for stacking.
Compared with prior art, it is the advantages of the utility model with good effect：
1st, directly soil is stacked into mound, and heating tube and extraction tube is set in mound, soil is heated, it will
Pollutant discharge in soil, the thermal desorptions processing space such as plenum chamber is dug without ground on the scene, reduces thermal desorption processing
Workload.
2nd, the heating tube of thermal desorption processing component and extraction tube are laterally set, and make heating tube and extraction tube all from mound side
It stretches out, convenient for connection heating equipment and pollutant reclaimer；Heating tube and extraction tube can be covered in mound to the greatest extent
The cross section of sectional area maximum ensures the area coverage of thermal desorption processing, while can use lesser amount of heating tube and carry
Take pipe.
3rd, thermal desorption processing component stacked arrangement, makes its vertical distributed multilevel in mound, ensure thermal desorption processing
Covering volume in mound can fully be handled each position in mound.
4th, heating tube and extraction tube are alternately arranged in same section, make positioned at same layer heating tube and extraction tube distance compared with
Closely, the pollutant of heating tube heating abjection, which can quickly enter, is discharged in adjacent extraction tube outside soil, shortens pollutant and exists
Flow distance in soil in the case where mound density is larger, can ensure pollutant fluid flow to extraction tube nearby
In, pollutant is enable all to discharge, improves treatment effect.
5th, thermal desorption processing component is placed on a soil horizon, then is covered by another soil horizon, in soil lamination stack
During putting into mound, you can complete the embedded of thermal desorption processing component, reduce the difficulty of thermal desorption processing construction, accelerate
Speed of application, improves treatment effeciency.
6th, heating tube sets casing, and the high-temperature gases such as barrier hot-air, high-temperature flue gas are entered in soil, pass through casing pair
Soil carries out indirectly heat, prevents high-temperature gas from entering in soil, new pollutant is brought into soil, prevent from being formed secondary
Pollution.
7th, the casing of a heating tube is connected by pipeline with the hot gas delivery pipe of another heating tube, makes two heating tubes
Series winding, high-temperature gas can pass sequentially through two heating tubes, and the corresponding soil of heating tube is heated, makes the heat in high-temperature gas
It can more fully be utilized, improve efficiency of energy utilization.
8th, the position that confining bed is located at the top of mound employs rock wool, can stop that thermal current rises, and is incited somebody to action without with rock wool
Mound covers comprehensively, you can good insulation effect is played to mound, while reduces the construction cost of confining bed, reduces rock
The laying difficulty of cotton.
Description of the drawings
Fig. 1 is the elevational schematic of soil thermal desorption system；
Fig. 2 is the cross-sectional schematic diagram one of soil thermal desorption system；
Fig. 3 is the cross-sectional schematic diagram two of soil thermal desorption system；
Fig. 4 is the cross-sectional schematic diagram three of soil thermal desorption system；
Fig. 5 is the structure diagram of soil thermal desorption system；
In above each figure：1st, place；1.1st, treatment region；2nd, mound；3rd, thermal desorption processing component；3.1st, heating tube；3.2、
Extraction tube；4th, confining bed；4.1st, closedtop portion；4.2nd, side seal portion；5th, casing；5.1st, exhaust pipe；6th, electric heater；7th, hot gas conveys
Pipe；8th, cement sand bed；9th, rock wool；11st, power supply；12nd, heat source.
Specific embodiment
In the following, the utility model is specifically described by illustrative embodiment.It should be appreciated, however, that do not having
In the case of being further discussed below, element, structure and features in an embodiment can also be advantageously incorporated into other implementations
In mode.
, it is necessary to explanation, term " interior ", " outer ", " on ", " under ", "front", "rear" etc. in the description of the utility model
The orientation or position relationship of instruction are based on position relationship shown in the drawings, are for only for ease of description the utility model and simplification
Description rather than instruction imply that signified device or element must have specific orientation, with specific azimuth configuration and behaviour
Make, therefore it is not intended that limitation to the utility model.In addition, term " first ", " second ", " the 3rd " are only used for description mesh
, and it is not intended that instruction or hint relative importance.
As shown in Fig. 1 to 5, soil thermal desorption processing system, for handling the pollutant in soil in place 1,
Including being made of the soil being deposited on place 1 and being in the mound 2 of stack, the thermal desorption processing component 3 being embedded in mound 2,
And it is covered in the confining bed 4 on 2 surface of mound.
Thermal desorption processing component 3 include heating tube 3.1 and extraction tube 3.2, respectively to mound 2 is heated and to
Make to be entered and discharged by the pollutant deviate from mound 2 under high temperature.
When carrying out thermal desorption processing using the earth thermal desorption processing system, the soil in place 1 will first be dug out, and stacked
The treatment region 1.1 set to place 1.
Soil first piles first soil horizon 2.1, then thermal desorption processing component 3 is put first during stacking
On a soil horizon 2.1.Continue the soil dug out from place 1 being deposited on first soil horizon 2.1, stack into above it
Second soil horizon 2.1, so as to which thermal desorption processing component 3 is buried in soil.
Soil horizon 2.1 is successively stacked from bottom to top, and the mound 2 for forming stack is stacked on treatment region.
Confining bed 4 is covered on 2 surface of mound of formation, the soil in mound 2 is closed.
The soil in mound 2 is heated by the heating tube 3.1 of thermal desorption processing component 3, the pollutant in soil
Deviate from high temperature from soil, and flow in the extraction tube 3.2 of thermal desorption processing component 3, soil is discharged to by extraction tube 3.2
Outside earth, recycled and handled by the retracting device being connected with extraction tube 3.2.
The confining bed 4 on 2 surface of mound is covered in, prevents the pollutant in soil from spilling into air, causes the dirt of air
Dye also avoids in thermal desorption processing, soil plus thermogenetic heat is quickly dissipated, ensures the heating effect of soil in mound 2,
So as to ensure the effect and efficiency of thermal desorption processing.
Soil other side is subjected to thermal desorption processing to treatment region 1.1, floor space is small, while makes to remove treatment region in place 1
1.1 other regions can be normally carried out construction operation, not influence construction speed.
Thermal desorption processing component 3 is directly embedded in mound 2, is carried out thermal desorption processing to it, is dug without in place
If the processing such as rest chamber, it is only necessary to stack Zinc fractions mound 2, alleviate the workload of thermal desorption processing.Simultaneously by
During layer stacks Zinc fractions mound 2, you can complete the embedded of thermal desorption processing component 3, reduce thermal desorption processing group
The embedded difficulty of part 3 so as to reduce the establishment difficulty of thermal desorption processing system, accelerates speed of application, improves processing effect
Rate.
In order to improve the area coverage of heat treatment, as shown in Figures 2 to 4, thermal desorption processing component 3 is laterally embedded in mound 2
In, heating tube 3.1 and extraction tube 3.2 to be made to cover the cross section of mound 2, increase its area coverage in mound 2, make soil
The soil at each position can be heated fully on heap cross section, also enable the pollutant volatilized in each position soil
It is enough rapidly introduced into extraction tube 3.2 and discharges, ensure the effect of thermal desorption processing, improve the efficiency of thermal desorption processing.
Heating tube 3.1 and extraction tube 3.2 are extended to opposite side, and are stretched by the side of mound by the one side in mound 2
Go out, connect heating equipment and pollutant reclaimer respectively, make the connection of heating equipment and pollutant reclaimer more convenient.
Since the length and width of mound is gradually reduced from bottom to top, thermal desorption processing component 3 is laterally set, compared to perpendicular
To setting, each position of entire mound 2 with lesser amount of heating tube 3.1 and extraction tube 3.2, can be covered.
In order to further improve the coverage of heat treatment, as shown in Figure 1 and Figure 5, thermal desorption processing component 3 is in mound 2
Middle stacked arrangement is multigroup, and the heating tube 3.1 and extraction tube 3.2 in same thermal desorption processing component 3 set multiple, and are aligned to
On the same section of mound 2, make its vertical distributed multilevel in mound 2, ensure the nappe in mound 2 of thermal desorption processing
Product can fully be handled each position on horizontal and vertical in mound.
In order to ensure that pollutant smooth can be discharged, as shown in Fig. 2 to 5, heating tube in same thermal desorption processing component 3
3.1 and extraction tube 3.2 be alternately arranged on the same section of mound 2.
In same thermal desorption processing component 3, each 3.1 one side adjacent position of heating tube is both configured to extraction tube 3.1,
It is closer to the distance to make to be located at the heating tube 3.1 of same layer and extraction tube 3.2 in mound 2, the pollutant energy that the heating of heating tube 3.1 is deviate from
It enough quickly enters and is discharged in adjacent extraction tube 3.2, shorten the flow distance of pollutant in the soil, it is larger in mound density
In the case of, it can ensure that pollutant fluid flow into extraction tube 3.2 nearby, enables pollutant all to discharge, at raising
Manage effect.
The heating tube 3.1 of thermal desorption processing component 3 is electric heating tube or gas heating tube.
As shown in Fig. 2, Fig. 3 and Fig. 5, electric heating tube includes being embedded in the casing 5 in soil 2 and installation casing 5
Electric heater 6.Electric heater 6 is connected by conducting wire with power supply 11, and power supply 11 is powered for electric heater 6, generates electric heater 6
Heat, heat transfer is transferred to by the tube wall of casing 5 in soil to the air in space in casing 5, then by air, to soil
In pollutant heated, it is made to volatilize and is flow in extraction tube 3.2.
As shown in Fig. 2, Fig. 4 and Fig. 5, gas heating tube includes the casing 5 being embedded in soil 2 and in casing 5
The hot gas delivery pipe 7 of high-temperature gas can be sent into described sleeve pipe 5.Hot gas delivery pipe 7 is connected with heat source 12 by pipeline, heat
Source 12 generates high-temperature gas, and high-temperature gas is higher for temperature such as the high-temperature flue gas of fuel gas buring generation or electrically heated high temperature airs
Gas.The high-temperature gas that heat source 12 generates is entered by pipeline in hot gas delivery pipe 7, the sky being then filled into casing 5
Between in.The heat of high-temperature gas is transferred to by the tube wall of casing 5 in soil, and the pollutant in soil is heated, makes it
It volatilizees and flow in extraction tube 3.2.
Heating tube 3.1 carries out indirectly heat by casing 5 to soil, casing 5 separates its inner space and soil, high
The gas that warm flue gas etc. has pollutant cannot be introduced into soil, will not cause secondary pollution to soil.
As shown in figure 3, the heating tube 3.1 in same thermal desorption processing component 3 can be all using electric heating tube.Such as Fig. 4 institutes
Show, the heating tube 3.1 in same thermal desorption processing component 3 also can be all using gas heating tube.At same thermal desorption as shown in Figure 2
The gentle heating tube of electric heating tube can be used simultaneously in reason component 3.
In order to improve the heat utilization rate of high-temperature gas, when the gas heating tube that heating tube 3.1 uses is embedded with multiple, one
The exhaust pipe 5.1 that 5 side wall of casing of gas heating tube is set is connected by pipeline with the hot gas delivery pipe 7 of another gas heating tube
It connects, multiple gas heating tubes is made to contact.
High-temperature gas is entered by hot gas delivery pipe 7 in the casing 5 of a gas heating tube, and heat is carried out with corresponding soil
It exchanges, is heated, after then being flowed in casing 5, the hot gas that another gas heating tube is entered by exhaust pipe 2.1 conveys
In pipe 7, subsequently into the casing 5 to the gas heating tube, heat exchange is once carried out again with corresponding soil, is heated.
By the above-mentioned means, high-temperature gas by multiple gas heating tubes of series winding, heats the soil at multiple positions,
Make full use of the heat in high-temperature gas.
In order to improve the economy of thermal desorption processing system, confining bed 4 includes side seal portion 4.1 and closedtop portion 4.2, side seal portion
4.1 is are covered in the cement sand bed 8 in 2 side surfaces of mound, and closedtop portion 4.2 is laid in the rock on 2 top surface of mound for stacking
Cotton 9 and cement sand bed 8.
The closedtop portion that confining bed 4 is located at 2 top of mound employs rock wool 9, can stop that thermal current rises, and plays heat preservation and makees
With, and its insulation effect can ensure the heat preservation to mound 2 with differing performance covered to mound 2 rock wool 9 comprehensively by way of
Effect reduces the usage amount of rock wool 9, reduces the construction cost of confining bed 4, while need not be in the larger mound of difficulty of construction
2 side overlying rimrock cottons 9, reduce difficulty of construction.
Claims (9)
1. a kind of soil thermal desorption processing system, for handling the pollutant in soil in place (1), feature exists
In,
Including being made of the soil being deposited on place (1) and being in the mound (2) of stack, the thermal desorption being embedded in mound (2)
Processing component (3) and the confining bed (4) for being covered in mound (2) surface；
The thermal desorption processing component (3) includes heating tube (3.1) and extraction tube (3.2), respectively adding to mound (2)
Heat and to make to be entered and discharged by the pollutant of abjection in mound (2) under high temperature.
2. soil thermal desorption processing system according to claim 1, which is characterized in that the thermal desorption processing component (3)
It is laterally embedded in the mound (2), heating tube (3.1) and extraction tube (3.2) to be made to cover the transversal of the mound (2)
Face.
3. soil thermal desorption processing system according to claim 1, which is characterized in that the thermal desorption processing component (3)
Stacked arrangement is multigroup in the mound (2).
4. the soil thermal desorption processing system according to claim 1 or 3, which is characterized in that same thermal desorption processing group
Heating tube (3.1) and extraction tube (3.2) setting in part (3) is multiple, and is aligned on the same section of the mound (2).
5. the soil thermal desorption processing system according to claim 1 or 3, which is characterized in that same thermal desorption processing group
Heating tube (3.1) and extraction tube (3.2) are alternately arranged on the same section of the mound (2) in part (3).
6. soil thermal desorption processing system according to claim 1, which is characterized in that the heating tube (3.1) includes energy
Electric heater (6) in the casing (5) and installation casing (5) that are enough embedded in mound (2).
7. soil thermal desorption processing system according to claim 1, which is characterized in that the heating tube (3.1) includes energy
The casing (5) that is enough embedded in mound (2) and high-temperature gas can be sent into described sleeve pipe (5) in casing (5)
Hot gas delivery pipe (7).
8. soil thermal desorption processing system according to claim 7, which is characterized in that the heating tube (3.1) is embedded more
A, the exhaust pipe (5.1) that casing (5) side wall of a heating tube (3.1) is set passes through pipeline and another heating tube (3.1)
Hot gas delivery pipe (7) is connected, and the high-temperature gas the casing (5) of a heating tube (3.1) to be discharged is transported to another
In the hot gas delivery pipe (7) of heating tube (3.1).
9. soil thermal desorption processing system according to claim 1, which is characterized in that the confining bed (4) includes side seal
Portion (4.2) and closedtop portion (4.1), the side seal portion (4.2) are the cement sand bed being covered in the mound (2) side surfaces
(8), the closedtop portion (4.1) is laid in rock wool (9) and cement sand bed (8) on the mound (2) top surface for stacking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721337095.1U CN207386152U (en) | 2017-10-17 | 2017-10-17 | Soil thermal desorption processing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721337095.1U CN207386152U (en) | 2017-10-17 | 2017-10-17 | Soil thermal desorption processing system |
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| Publication Number | Publication Date |
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| CN207386152U true CN207386152U (en) | 2018-05-22 |
Family
ID=62328479
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721337095.1U Active CN207386152U (en) | 2017-10-17 | 2017-10-17 | Soil thermal desorption processing system |
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| CN (1) | CN207386152U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107685074A (en) * | 2017-10-17 | 2018-02-13 | 杰瑞环保科技有限公司 | soil thermal desorption processing system and processing method |
| CN114289485A (en) * | 2021-11-24 | 2022-04-08 | 生态环境部南京环境科学研究所 | Method for remedying pollution of pesticide plant based on mountain and hill site conditions |
-
2017
- 2017-10-17 CN CN201721337095.1U patent/CN207386152U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107685074A (en) * | 2017-10-17 | 2018-02-13 | 杰瑞环保科技有限公司 | soil thermal desorption processing system and processing method |
| CN114289485A (en) * | 2021-11-24 | 2022-04-08 | 生态环境部南京环境科学研究所 | Method for remedying pollution of pesticide plant based on mountain and hill site conditions |
| CN114289485B (en) * | 2021-11-24 | 2023-01-13 | 生态环境部南京环境科学研究所 | Method for remedying pollution of pesticide plant based on mountain and hill site conditions |
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