CN105444159A - In-situ deep-layer heating device and in-situ heating soil decontamination device with same - Google Patents
In-situ deep-layer heating device and in-situ heating soil decontamination device with same Download PDFInfo
- Publication number
- CN105444159A CN105444159A CN201510760262.2A CN201510760262A CN105444159A CN 105444159 A CN105444159 A CN 105444159A CN 201510760262 A CN201510760262 A CN 201510760262A CN 105444159 A CN105444159 A CN 105444159A
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- Prior art keywords
- heating
- soil
- air
- well
- situ
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C5/00—Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
- F23C5/08—Disposition of burners
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/06—Reclamation of contaminated soil thermally
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses an in-situ deep-layer heating device which comprises at least one heating structure for heating air and/or fuel gas entering the heating structure. Each heating structure comprises a heating pipeline and a heating element, wherein the heating pipeline is arranged in a heating well at a contaminated soil area, and the heating element is arranged at the bottom of the heating pipeline and used for heating the air and/or the fuel gas entering the heating pipeline until the air and/or the fuel gas burn/burns. According to each heating structure, the heating element at the bottom of the heating pipeline is used for heating the air and/or the fuel gas until the air and/or the fuel gas burn/burns, heat is generated at the bottom of the contaminated soil area and is directly transmitted to soil through the heating pipeline, the situation that heat can only make contact with the soil or can only heat the soil after being transmitted by a certain distance is avoided, and the heat generated by burning is fully utilized; the heat is transmitted upwards from the bottom of the soil, the contaminated soil area can be fully heated through the bottom-to-top transmitting mode, and organic pollutants in the soil can be fully taken out; not only can the heat be fully utilized, but also the contaminated soil can be fully purified.
Description
Technical field
The present invention relates to soil decontamination field, relate in particular to a kind of original position deep layer heater and there is the In Situ Heating soil decontamination plant of this original position deep layer heater.
Background technology
Since China's reform and opening-up, because a large amount of contaminated industrial sites has been left in chemical enterprise resettlement, contaminating enterprises move the environmental pollution accident of initiation and also happen occasionally to the event of health injury, have become Land Development and have caused one of principal element of environment difficulties.The benzene homologues such as pollutant benzene, toluene of chemical enterprise emission and the pollution of organic chlorine agriculture chemicals to soil of agriculturally applying also increase gradually.The oil spill accident that the development of petroleum industry then brings gasoline, brought by the volatility such as diesel oil (VOCs) and semi-volatile organic matter (SVOCs), as petroleum pipeline breaks, the Soil Environmental Pollution problem that oil storage tank seepage etc. cause.If these polluters remain in soil, will enter further in water body, air and food chain, great harm can be brought to ecological environment and health.
At present, there is multiple method to the removal of pollutant in soil, as excavated rear burning, original position bricking, biological treatment, chemical addition agent or passivation etc.Although these methods are used successfully to some example, exist certain not enough due to its somewhat expensive, therefore unrealistic in large-scale remediation contaminated soil.And soil vapor extraction technology is one utilizes physical method, physical method is utilized to remove volatile organic matter in unsaturated soil, order about air by vacuum equipment generation negative pressure and flow through soil aperture, thus carry volatile organic matter secretly and flow to extraction system, and will collect after these volatile organic matter extractings to ground and a kind of technology of process.Original position soil air lift technology be applicable to process Henry'S coefficient be greater than 0.01 or vapour pressure be greater than the VOC of 66.66Pa, as volatility organic halogen or non-halogenated thing, also can be used for the pollutant soil vapor extraction technology such as oils, heavy metal, polycyclic aromatic hydrocarbon Huo bioxin removed in soil and effectively can remove effumability organic pollution, but poor for the half volatile organic contamination effect that boiling point is higher.Heat treatment reinforcement technology, generally refers to by direct or indirect heat exchange, and pollution medium and contained organic pollution thereof are heated to enough temperature, makes the process that organic pollution volatilizees from pollution medium or separates.General situ heat treatment technology all realizes the reparation to place with soil air lift combine with technique.Utilize hot reinforcement technique to heat soil, can improve soil characteristic, improve the permeability of soil and the mass transfer velocity of pollutant, heat treatment technics combines with SVE technology, can strengthen the disposal ability of SVE system, accelerates the improvement speed in place.
As Chinese patent literature CN104907326A discloses the device that a kind of original position removes soil and groundwater organic pollution, comprise outer metal tube and the central metal pipe of vertical setting, outer metal tube is connected with detection igniter with the top of central metal pipe, outer metal tube and central metal tube portion insert in soil, described central metal pipe is connected with air inlet pipe on soil top, central metal pipe is connected with plastics screen casing in soil bottom, the other end of this plastics screen casing is communicated with soil, described outer metal tube is connected with blast pipe on soil top, soil above described outer metal tube and central metal pipe is provided with heat-proof device.Namely in this patent document, described central metal pipe is connected in one end with the air inlet pipe of horizontally set, soil top, the other end of air inlet pipe is communicated with outside air through outer metal tube, central metal pipe is also connected with a plastics screen casing in soil bottom, the other end opening of this plastics screen casing and being communicated with soil through outer metal tube, this plastics screen casing is high-temperature resistant tube, it for its surrounding soil and underground water heating after, the organic pollution in soil and groundwater is made to pass in central metal pipe through plastics screen casing under suction function, organic pollution is as the postcombustion detecting igniter, burn together with the air that the external world passes into, pollutant is decomposed, described outer metal tube is connected with blast pipe on soil top, the other end of this blast pipe is communicated with outside air, soil above described outer metal tube and central metal pipe is provided with heat-proof device, play thermal insulation function, heat-proof device can be concrete, insulating plastic pipe etc.
But have the following disadvantages in above-mentioned patent document: 1), this detection igniter is located at above soil, after combustion gas is lighted, its heat produced can not be directly used in heating soil, caloric requirement just can touch soil after transmitting a segment distance by central metal pipe and outer metal tube and then could heat soil, and certain thermal loss can be caused in transmittance process, cause energy dissipation; 2), in this device, outer metal pipe sleeve is located at outside central metal pipe, wherein, the heat produced after burning also is passed to below soil by central metal pipe and air inlet pipe, and outer metal tube is communicated with blast pipe and is used for be vented, therefore heat is that extremely outer metal tube is to soil by central metal pipe when radial direction is transmitted, and namely heat is not only used to heating soil also for heating by by the gas in outer metal tube, cause certain thermal loss, cause energy dissipation; 3), in the apparatus, the organic pollution after collection directly enters air after fuel combustion as a supplement, easily causes secondary pollution.
Summary of the invention
For this reason, technical problem to be solved by this invention is that the heat of prior art situ decontamination plant completely for heating soil, can not exist the defect that energy loss is large; And then a kind of original position deep layer heater can avoiding heat waste is provided; Original position decontamination plant of the prior art easily causes secondary pollution simultaneously, provides a kind of In Situ Heating soil decontamination plant with original position deep layer heater can avoiding secondary pollution further.
For solving the problems of the technologies described above, a kind of original position deep layer heater of the present invention, comprise the heating arrangement that at least one heats the air entered in it and/or combustion gas, described heating arrangement comprises the water back in the heated well being arranged on contaminated soil region, and is located at the heating element heater bottom described water back, the air entered in described water back and/or combustion gas being heated to burning.
Also comprise some dispersion hot wells be communicated with described heated well be distributed in soil pollution region.
Combustion gas injection channel and air Injection passage is provided with, by the extremely burning of described heating element heats after described combustion gas and described air mix bottom described water back in described water back.
Described heating element heater is set to the igniting element mixed described combustion gas and air being lighted to heating.
A kind of In Situ Heating soil decontamination plant, comprises the heating arrangement heated contaminated soil, the evaporative pollutants in described soil pollution region is carried out to the vacuum extraction structure of extracting, and to the exhaust gas processing device that the tail gas after collecting processes; Described heating arrangement is above-mentioned original position deep layer heater.
Described vacuum extraction structure comprises some extraction wells, and carries out collecting extracting and the extraction system being delivered to described exhaust gas processing device to described tail gas by described extraction well.
Described extraction well is arranged around described water back and described dispersion hot well circumference.
The external boundary place in described contaminated soil region is provided with the uniform multiple described extraction well of circumference.
Described dispersion hot well and described extraction well are arranged with vertical and/or level and/or angled manner in described contaminated soil.
Described dispersion hot well and described extraction well form some air-vents.
Technique scheme of the present invention has the following advantages compared to existing technology:
1, heating arrangement provided by the invention is heated to burning by heating element heater to air and/or combustion gas in the bottom of described water back, such heat produces in the bottom in contaminated soil region, it can be directly passed to soil by water back, and maybe could soil be heated without the need to soil just can be touched after transmitting a segment distance, thus avoid thermal loss, take full advantage of the heat that burning produces; Meanwhile, heat upwards transmits by bottom soil, and bottom-up transfer mode can make described contaminated soil region fully be heated, and the organic pollution in soil fully can be taken out of; Therefore, not only heat can make full use of, and contaminated soil can fully purify.
2, the invention provides some dispersion hot wells be communicated with described heated well be distributed in soil pollution region, heat can transmit by the described dispersion hot well arranged that scatters in many ways, fully heats described contaminated soil, improves detersive efficiency.
3, the external boundary place in described contaminated soil region of the present invention is provided with the uniform multiple described extraction well of circumference, thus prevents tail gas from going diffusion to the uncontamination soil of described contaminated soil periphery, avoids secondary pollution.
4, described extraction well of the present invention is arranged around described dispersion hot well circumference, collects in time, avoid secondary pollution to by the tail gas of overflowing in the described contaminated soil after described dispersion hot well heating.
5, vacuum extraction facility of the present invention carries out extracting and reclaiming to tail gas, and sends in exhaust gas processing device and process, and avoids tail gas directly to be entered in air and causes secondary pollution.
Accompanying drawing explanation
In order to make content of the present invention be more likely to be clearly understood, below according to a particular embodiment of the invention and by reference to the accompanying drawings, the present invention is further detailed explanation, wherein
Fig. 1 is heating arrangement schematic diagram of the present invention;
In figure, Reference numeral is expressed as: 1-water back; 2-combustion gas injection channel; 3-air Injection passage; 4-heating element heater; 5-heated well.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
As shown in Figure 1, a kind of original position deep layer heater of the present embodiment, comprise the heating arrangement that at least one heats the air entered in it and/or combustion gas, described heating arrangement comprises the water back 1 be arranged in the heated well 5 in contaminated soil region, and is located at the heating element heater 4 bottom described water back 1, the air entered in described water back 1 and/or combustion gas being heated to burning.
The heating arrangement of the present embodiment is heated to burning in the bottom of described water back 1 by heating element heater 4 pairs of air and/or combustion gas, such heat produces in the bottom in contaminated soil region, it can be directly passed to soil by water back 1, and maybe could soil be heated without the need to soil just can be touched after transmitting a segment distance, thus avoid thermal loss, take full advantage of the heat that burning produces; Meanwhile, heat upwards transmits by bottom soil, and bottom-up transfer mode can make described contaminated soil region fully be heated, and the organic pollution in soil fully can be taken out of; Therefore, not only heat can make full use of, and contaminated soil can fully purify.
Particularly, the present embodiment also comprises some dispersion hot wells be communicated with described heated well 5 be distributed in soil pollution region; Heat can transmit by the described dispersion hot well arranged that scatters in many ways, fully heats described contaminated soil, improves detersive efficiency.
On the basis of above-described embodiment, in described water back 1, be provided with combustion gas injection channel 2 and air Injection passage 3, after described combustion gas and described air mix bottom described water back 1, be heated to burning by described heating element heater 4.Wherein, described heating element heater 4 is set to the igniting element mixed described combustion gas and air being lighted to heating.
In the present embodiment, described heating arrangement is also provided with detection adjustment structure, described detection adjustment structure can according to concrete combustion case, air in the combustion gas of described combustion gas injection channel 2 and described air Injection passage 3 is regulated, making described combustion gas and described air can clean-burning ratio mix, avoiding causing energy waste because burning insufficient.
Embodiment 2
On the basis of embodiment 1, the present embodiment provides a kind of In Situ Heating soil decontamination plant further, comprise the heating arrangement that contaminated soil is heated, evaporative pollutants in described soil pollution region is carried out to the vacuum extraction structure of extracting, and to the exhaust gas processing device that the tail gas after collecting processes; Described heating arrangement is above-mentioned original position deep layer heater.The vacuum extraction facility of the present embodiment carries out extracting and reclaiming to the evaporative pollutants in described soil pollution region, and sends in exhaust gas processing device and process, and avoids tail gas directly to be entered in air and causes secondary pollution
Described vacuum extraction structure comprises some extraction wells, and carries out collecting extracting and the extraction system being delivered to described exhaust gas processing device to described tail gas by described extraction well.
Particularly, described dispersion hot well and described extraction well are arranged with vertical and/or level and/or angled manner in described contaminated soil; Meanwhile, described dispersion hot well and described extraction well form some air-vents.
Described extraction well is arranged around described water back 1 and described dispersion hot well circumference.Particularly, can described dispersion hot well and described water back 1 surround region inside and outside while circumference described extraction well is set, thus prevent tail gas from going diffusion to the uncontamination soil of described contaminated soil periphery, avoid secondary pollution; Collect by the tail gas of overflowing in the described contaminated soil after described dispersion hot well heating in time, avoid secondary pollution.
The external boundary place in described contaminated soil region is provided with the uniform multiple described extraction well of circumference; Thus prevent tail gas from going diffusion to the uncontamination soil of described contaminated soil periphery, avoid secondary pollution.
In the present embodiment, described heating arrangement is to air or gas heating and heat, then the gas after burned is inputted in described dispersion hot well, described dispersion hot well is heated neighbouring soil by gas heat, effumability pollutant in described contaminated soil is heated volatilization, thus be separated with soil, and processed by concentrated input exhaust gas processing device by after vacuum extraction structure extraction, and then complete whole soil decontamination process.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among the protection domain of the invention.
Claims (10)
1. an original position deep layer heater, comprise the heating arrangement that at least one heats the air entered in it and/or combustion gas, it is characterized in that: described heating arrangement comprises the water back (1) at least one heated well being arranged on contaminated soil region (5), and be located at described water back (1) bottom is heated to burning heating element heater (4) to the air entered in described water back (1) and/or combustion gas.
2. original position deep layer heater according to claim 1, is characterized in that: also comprise some dispersion hot wells be communicated with described heated well (5) be distributed in soil pollution region.
3. original position deep layer heater according to claim 1, it is characterized in that: be provided with combustion gas injection channel (2) and air Injection passage (3) in described water back (1), described combustion gas and described air are heated by described heating element heater (4) or light to burning after the mixing of described water back (1) bottom.
4. original position deep layer heater according to claim 3, is characterized in that: described heating element heater (4) is set to the igniting element mixed described combustion gas and air being lighted to heating.
5. an In Situ Heating soil decontamination plant, comprises the heating arrangement heated contaminated soil, the evaporative pollutants in described soil pollution region is carried out to the vacuum extraction structure of extracting, and to the exhaust gas processing device that the tail gas after collecting processes; It is characterized in that: described heating arrangement is the original position deep layer heater of claim 1-4.
6. In Situ Heating soil decontamination plant according to claim 5, it is characterized in that: described vacuum extraction structure comprises some extraction wells, and carry out collecting extracting and the extraction system being delivered to described exhaust gas processing device to described tail gas by described extraction well.
7. In Situ Heating soil decontamination plant according to claim 6, is characterized in that: described extraction well is arranged around described water back (1) and described dispersion hot well circumference.
8. the In Situ Heating soil decontamination plant according to claim 6 or 7, is characterized in that: the external boundary place in described contaminated soil region is provided with the uniform multiple described extraction well of circumference.
9. In Situ Heating soil decontamination plant according to claim 8, is characterized in that: described dispersion hot well and described extraction well are arranged with vertical and/or level and/or angled manner in described contaminated soil.
10. In Situ Heating soil decontamination plant according to claim 9, is characterized in that: described dispersion hot well and described extraction well form some air-vents.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510760262.2A CN105444159A (en) | 2015-11-09 | 2015-11-09 | In-situ deep-layer heating device and in-situ heating soil decontamination device with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510760262.2A CN105444159A (en) | 2015-11-09 | 2015-11-09 | In-situ deep-layer heating device and in-situ heating soil decontamination device with same |
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| CN105444159A true CN105444159A (en) | 2016-03-30 |
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| CN201510760262.2A Pending CN105444159A (en) | 2015-11-09 | 2015-11-09 | In-situ deep-layer heating device and in-situ heating soil decontamination device with same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077065A (en) * | 2016-06-03 | 2016-11-09 | 北京建工环境修复股份有限公司 | A kind of In Situ Heating device and In Situ Heating soil repair system thereof |
| CN109351766A (en) * | 2018-11-30 | 2019-02-19 | 中冶南方都市环保工程技术股份有限公司 | Contaminated soil combustion gas original position thermal desorption repair system |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106077065A (en) * | 2016-06-03 | 2016-11-09 | 北京建工环境修复股份有限公司 | A kind of In Situ Heating device and In Situ Heating soil repair system thereof |
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| 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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Application publication date: 20160330 |