CN108746178A - A kind of energy saving thermal desorption processing unit in situ and processing method of oil pollution soil - Google Patents
A kind of energy saving thermal desorption processing unit in situ and processing method of oil pollution soil Download PDFInfo
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- CN108746178A CN108746178A CN201810770599.5A CN201810770599A CN108746178A CN 108746178 A CN108746178 A CN 108746178A CN 201810770599 A CN201810770599 A CN 201810770599A CN 108746178 A CN108746178 A CN 108746178A
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- oil pollution
- pollution soil
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- soil
- energy saving
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C2101/00—In situ
Abstract
The invention discloses the energy saving thermal desorption processing units in situ and processing method of a kind of oil pollution soil.Processing unit includes:Heating component, the heating component include heating tube, and heating tube is arranged inside oil pollution soil;Component is extracted, which includes extraction tube, and extraction tube is arranged in oil pollution soil;Flue gas emission component, including smoke pipe is returned, it returns smoke pipe and is connected with heating tube;Inert gas blasts component;Monitoring assembly is arranged in oil pollution soil;Polluted gas processing component is connected with extracting component.Processing method includes:Original place dystopy builds oil pollution soil mound;During building oil pollution soil mound, the energy saving thermal desorption processing unit in situ of oil pollution soil disclosed by the invention is set;Insulating layer, sealant are set gradually outside the mound for building completion;Mound is heated, the greasy dirt in soil enters polluted gas processing component by heating, volatile component via extracting component, realizes greasy dirt recycling.
Description
Technical field
The invention belongs to environmental protection technical fields, and in particular at a kind of energy saving thermal desorption in situ of oil pollution soil
Manage device and processing method.
Background technology
Petroleum hydrocarbon has the feature different from other soil pollutions to the pollution of soil, is mainly shown as passing through in soil table
The general character, petroleum hydrocarbon are often filled in nearly all hole on certain area, in certain depth soil, and most of soil is blocked
Earth stomata, simultaneously because the toughness of petroleum hydrocarbon together by the soil particle gluing of script bulk in soil changes soil
Original structure feature.Oil the hydrocarbon component is often sufficiently complex, the complicated sexual intercourse with contaminated soil texture again of such complexity
It is woven in together, therefore the improvement of petroleum hydrocarbon contaminated soil proposes very high requirement to the selection of recovery technique.Simultaneously partially
The petroleum hydrocarbon contaminated concentration in area is higher, as can carrying out oily resource reclaim, then energy-saving and environment-friendly purpose can be achieved.At present domestic application in
The treatment technology of petroleum hydrocarbon contaminated soil is broadly divided into three categories:Microorganism remediation technology, chemical remediation technology and peripheral doses
Technology.Microorganism remediation technology is using original inhabitants or microbe inoculation (such as fungi, bacterium or other microorganisms) come soil of degrading
In petroleum hydrocarbon, and strengthen means by adjusting carbon source, nutrients, oxygen or moisture content etc., petroleum hydrocarbon removed.Microorganism remediation
The efficiency of technology influenced by factors such as microbe species, soil property, geologic chemistry conditions it is very big, and to the nutrition in soil
Condition requires very high.In addition temperature, pH value, moisture content etc. are allowed to meet the life of microorganism with needing controlling filed in technology implementation process
Dis environment condition, therefore repairing effect is difficult to ensure.Chemical remediation technology is that oxidant is added into petroleum hydrocarbon contaminated soil, is led to
It is relatively low or be more easy to the intermediate or final product degraded by natural biology that peroxidization converts petroleum hydrocarbon to toxicity.Chemical remediation
Technology when in use goes back the places hydrogeologic condition such as the infiltration coefficient of soil, particle diameter distribution, porosity and pH value, oxidation
The soil physico-chemical properties such as former current potential have related request, can put into excessive oxidant in repair process, therefore be also easy to produce secondary pollution,
It is easy to cause reparation to be not thorough because chemical agent and contaminated soil are insufficient contact simultaneously.Peripheral doses technology is with thermal desorption skill
Based on art, i.e., by direct or indirect heat exchange, contaminated soil and its contained pollutant is heated to sufficient temp, make pollutant
It volatilizees or detaches from contaminated soil, then volatilization gas is handled, to obtain clean soil.This method processing is thorough
Bottom, high efficiency are not influenced by soil physico-chemical property, therefore as the first-elected technology of processing oily sludge soil.
The mode of heating of thermal desorption technology directly heat with two kinds of indirectly heat, but direct-fired form will produce greatly
Tail gas is measured, for the petroleum hydrocarbon contaminant of complicated components, has the risk for generating bioxin, exhaust emissions to be difficult to meet the requirements;And
Indirectly heat technology is due to being that can avoid the generation of bioxin under the heating environment of anaerobic, and can pass through the side of condensation
Formula recycles the oily resource in petroleum hydrocarbon contaminated soil, therefore indirectly heat form is increasingly becoming mainstream technology.Common indirect thermal
The operation format of desorption technology is excavated with dystopy, transfer office is set to master, and equipment hardening area is larger, and transportational process has generation two
The risk of secondary pollution farther out such as transportation range then increases construction cost.
Invention content
In order at least solve one of technical problem of the existing technology mentioned above, the invention discloses oil pollution soil
The energy saving thermal desorption processing unit in situ of earth, including:
Heating component, the heating component include heating tube, and heating tube is arranged inside oil pollution soil, for greasy dirt
Contaminated soil is heated;
Component is extracted, which includes extraction tube, and extraction tube is arranged in oil pollution soil, is added for collecting
The greasy dirt isolated in the soil of heat;
Flue gas emission component, including smoke pipe is returned, the smoke pipe that returns is connected with the heating tube, for discharging the heating
The flue gas being discharged in pipe;
Inert gas blasts component, for generating inert gas, and blasts inside oil pollution soil;
Monitoring assembly, including temperature detection part and pressure detecting part are arranged in oil pollution soil, are respectively used to
Detect its internal temperature and pressure;
Polluted gas processing component is connected with extracting component, for the greasy dirt gas in the soil to extracting collect components
Body is recycled.
Further, the energy saving thermal desorption processing unit in situ of oil pollution soil disclosed in some embodiments of the invention, heating
Component further includes burner and ceramic fire resistant pipe, and one end of ceramic fire resistant pipe is connected with burner, the other end and heating tube phase
Even;Wherein, the high-temperature flue gas that burner combustion generates passes through ceramic fire resistant pipe, subsequently into heating tube, is heated to heating tube.
The energy saving thermal desorption processing unit in situ of oil pollution soil disclosed in some embodiments of the invention, flue gas emission group
Part further includes:
Wind turbine is connected with smoke pipe exhaust end is returned, the power for providing flue gas emission;
Wherein, it returns smoke pipe to be arranged in oil pollution soil, soil is heated using the fume afterheat returned in smoke pipe.
The energy saving thermal desorption processing unit in situ for the oil pollution soil that some embodiments of the invention provide, temperature detecting part
Part includes temperature sensor, and pressure detecting part includes pressure sensor.
On the other hand, some embodiments of the invention also disclose the energy saving thermal desorption in situ processing side of oil pollution soil
Method, including:
Original place dystopy builds oil pollution soil mound;
During building oil pollution soil mound, the energy saving thermal desorption processing unit in situ of setting oil pollution soil;
Insulating layer, sealant are set gradually outside the mound for building completion;
Mound is heated, the greasy dirt in soil enters polluted gas processing group by heating, volatile component via extracting component
Part realizes greasy dirt recycling.
Further, the original place dystopy processing method of oil pollution soil disclosed in some embodiments of the invention, original place is built
Oil pollution soil mound is at polygon prismoid shaped.
Further, the energy saving in-situ heat desorption processing method of oil pollution soil disclosed in some embodiments of the invention, it is former
Oil pollution soil is built into multilayer mound in ground.
The energy saving in-situ heat desorption processing method of oil pollution soil disclosed in some embodiments of the invention, setting it is energy saving
Thermal desorption processing unit in situ includes:
Heating component, the heating component include heating tube, and heating tube is arranged inside oil pollution soil;
Component is extracted, which includes extraction tube, and extraction tube is arranged in oil pollution soil;
Flue gas emission component, including smoke pipe is returned, it returns smoke pipe and is connected with heating tube;
Inert gas blasts component, including inert gas generator part and gas delivery tube part;
Monitoring assembly, including temperature detection part and pressure detecting part;
Polluted gas processing component is connected with extracting component, for being carried out to the polluted gas in oil pollution soil
Recycling.
Further, the energy saving in-situ heat desorption processing method of oil pollution soil disclosed in some embodiments of the invention, adds
Heat pipe is multiple, and multiple heating tubes are arranged at intervals on the position of the different height of oil pollution soil mound, and, it is arranged same
Heating tube dispersion interval setting on one height and position.For example, in the soil mound for being built into multilayer, heating tube is arranged not
On level soil horizon, and the heating tube being arranged on same layer soil horizon is mutually disperseed, and dispersion distance could be provided as
Approximately equal is equal.
The energy saving in-situ heat desorption processing method of oil pollution soil disclosed in some embodiments of the invention, heating tube and pumping
It carries pipe and different height and positions in oil pollution soil mound is set.For example, in the soil mound for being built into multilayer, heating
Pipe and extraction tube are respectively set on different layers.
The energy saving thermal desorption processing unit in situ and processing method of oil pollution soil disclosed by the invention, realize greasy dirt
The processing nearby of contaminated soil is recycled, and device composition is simple, easy to operate, and burner high temperature off-gas recovery recycles, energy efficiency
Height, operating cost is low, processing procedure non-pollution discharge, energy conservation and environmental protection, is not necessarily to long distance transportation, the safe devoid of risk of processing procedure.
Description of the drawings
The energy saving thermal desorption processing unit composition schematic diagram in situ of oil pollution soil that Fig. 1 embodiments 1 provide
1 oil pollution mound schematic diagram of Fig. 2 embodiments
Specific implementation mode
Dedicated word " embodiment " herein, should not necessarily be construed as being better than as any embodiment illustrated by " exemplary " or
It is better than other embodiments.Testing performance index in this law embodiment, unless stated otherwise, using this field conventional methods.
It should be understood that heretofore described term is only to describe special embodiment, being not intended to limit disclosed by the invention
Content.
Unless otherwise stated, technical and scientific terms used herein has the common of the technical field of the invention
The normally understood identical meanings of technical staff;As other not specifically specified raw material in the present invention, reagent, test method
And technological means, refer both to the experiment of those skilled in the art's usually used raw material and reagent and generally use
Methods and techniques means;The original place dystopy addressed herein, original place therein should be generally understood that handles scene in contaminated soil,
Dystopy should be generally understood that contaminated soil is excavated after, excavating different places, dystopy processing in original place typically refers to
Contaminated soil is directly handled in appropriate range, needs not move through the transport to contaminated soil.
Term " basic " and " about " used in the disclosure is for describing small fluctuation.For example, they can refer to being less than
Or be equal to ± 5%, such as less than or equal to ± 2%, such as less than or equal to ± 1%, such as less than or equal to ± 0.5%, such as less than or
Equal to ± 0.2%, such as less than or equal to ± 0.1%, such as less than or equal to ± 0.05%.Concentration, amount and other numeric datas exist
It can indicate or present with range format herein.Such range format only uses for convenience and for the sake of brief, therefore Ying Ling
Work is construed to include not only the numerical value clearly enumerated as the boundary of the range, further includes include all independent within the scope of this
Numerical value or subrange.For example, the numberical range of " 1% to 5% " should be construed to include 1% to 5% clearly enumerating
Value, further includes independent values in the range shown and subrange.Therefore, include independent values in this numberical range, such as 2%,
3.5% and 4% and subrange, such as 1%~3%, 2%~4% and 3%~5%.This principle is equally applicable to only enumerate
The range of one numerical value.In addition, the width regardless of the range or the feature, such explanation is all suitable for.
In the disclosure, including claims, all conjunctions, as "comprising", " comprising ", " carrying ", " having ",
" containing ", " being related to ", " receiving " etc. are understood to be open, that is, refer to " including but not limited to ".Only conjunction
" by ... constitute " and " substantially by ... constitute " should be closing or semiclosed conjunction.
In order to better illustrate the content of present invention, numerous details is given in specific embodiment below.This
Field technology personnel should be appreciated that no certain details, the present invention can equally be implemented.In embodiment, for ability
Certain methods, means, instrument, equipment, raw material composition, molecular structure etc. known to field technique personnel are not described in detail, so as to
In the purport for highlighting the present invention.
The energy saving thermal desorption processing unit in situ of oil pollution soil provided in an embodiment of the present invention, including:
Heating component, the heating component include heating tube, and heating tube is arranged inside oil pollution soil, for greasy dirt
Contaminated soil is heated;As optional embodiment, heating component further includes burner and ceramic fire resistant pipe, burner combustion
After the flame of generation is by ceramic fire resistant pipe, the high-temperature flue gas of generation enters heating tube, and will by convection current heat transfer and heat radiation
Heat transfer is in direct contact to heating tube, heating tube with contaminated soil, and then is carried out to contaminated soil by the effect of heat transfer
Heating.As optional embodiment, heating tube assembly is set as multiple.
Component is extracted, which includes extraction tube, and extraction tube is arranged in oil pollution soil, is added for collecting
The greasy dirt isolated in the soil of heat, the other end of extraction tube are connected to polluted gas processing component, the outlet of usual extraction tube
End is connected with polluted gas processing component;Extraction tube be usually arranged as it is multiple, scattering device in the soil of oil pollution, soil
The greasy dirt component heated in earth, such as petroleum hydrocarbon enter extraction tube after volatilization, carried out subsequently into polluted gas processing component
Recycling.
Flue gas emission component, including smoke pipe is returned, it returns smoke pipe and is connected with heating tube, be discharged for discharging in the heating tube
Flue gas;As optional embodiment, wind turbine and chimney are also typically included;The high-temperature flue gas that burner combustion generates passes through heating
The gas of Guan Hou, outflow also there is certain temperature heat exchange is carried out again with smoke pipe is returned, if will return into after returning smoke pipe
Smoke pipe is arranged in the soil, can again be heated to oil pollution soil using smoke pipe is returned, realize the recycling of fume afterheat,
Utilization efficiency of heat energy is improved, finally enters smoke stack emission from the tail gas for returning smoke pipe discharge;It, can in order to improve the efficiency of emission
Wind turbine is arranged power is provided as flue gas emission.As optional embodiment, one is returned smoke pipe and is connected with multiple heating tubes, example
Such as, one is returned smoke pipe and is connected with three heating tubes.
Inert gas blasts component, for generating inert gas, and blasts inside oil pollution soil;As optional implementation
Mode, the optional nitrogen of inert gas, by nitrogen making machine, at processing scene prepared by directly production;It is increased with the temperature of mound heap body,
Petroleum hydrocarbon component volatilization, easily oil appropriate hydrocarbon gas rich region occur reaches petroleum hydrocarbon to prevent air from leaking into for mound heap body inside
Explosion limit, inert gas is blasted in mound heap body, on the one hand enhance heap body internal gas flow, accelerate pollutant desorption
On the other hand rate reduces oxygen content inside heap body, prevent from burning or explode.
Monitoring assembly, including temperature detection part and pressure detecting part are arranged in oil pollution soil, are respectively used to
Detect its internal temperature and pressure;Temperature detection part in oil pollution soil is set, mainly for detection of mound heap
The soil moisture in internal portion, is further used for judging treatment progress situation, judges the terminal of process;Pressure detecting part is mainly used
In detecting the negative pressure condition in mound heap body, according to the pressure condition, the working condition that nitrogen blasts system is adjusted.
Polluted gas processing component is recycled for the greasy dirt gas in the soil to extracting collect components.As can
It includes gas-liquid separator, tubular heat exchanger, circulating cooling water tower, buffer tank, wind to select embodiment, polluted gas processing component
Machine, absorbent charcoal adsorption tank and dual firing chamber condense the polluted gas containing petroleum hydrocarbon contaminated component first, realize that oily resource is returned
It receives, absorption and second-time burning then is carried out to on-condensible gas, realize tail gas qualified discharge.
The energy saving in-situ heat desorption processing method of oil pollution soil disclosed by the invention, can specifically include following step
Suddenly:
Contaminated soil after excavation is built into situ mound heap body, such as is built into prismatic table shape mound, the terrace with edge built
Type mound heap body includes four layers of contaminated soil, in build process inside heap body the component of installation process device or its component.Example
Such as, heating tube and extraction tube, the cloth on second layer contaminated soil are arranged on first layer contaminated soil and third layer contaminated soil
It sets and returns smoke pipe;
It is respectively provided with temperature sensor in one to four layer of mound heap body and heap body marginal position, for monitoring heap temperature;
Pressure sensor is set in heap body center, for monitoring negative pressure condition inside heap body;
In the second layer of mound heap body and the middle layer position of third layer, setting gas is set from mound heap body side surface and is injected
Pipe, for injecting inert gas;
After mound heap body is built, at the top of mound heap body and surrounding is laid with heat preservation rock, prevents heat losses, then
The heat preservation rock is protected with cement mortar, and is hardened, forms the protection outer housing of thermal-insulating sealing outside mound heap body;
Polluted gas processing component is installed, is connected with extracting component by gas collection pipeline;
Wind turbine and chimney in flue gas emission component is installed, and is connected with smoke pipe is returned;
The burner of heating component is installed, and is sequentially connected with ceramic fire resistant pipe and heating tube logical;It is high after starting burner
Warm flue gas enters heating tube, and indirectly heat is carried out to contaminated soil, and the flue gas after heat exchange, which enters, returns smoke pipe, carries out heat
Secondary use, then by with return the flue gas that smoke pipe is connected and summarize pipeline, drawn through wind turbine, by smoke stack emission;
After mound heap body is heated to certain temperature, the petroleum hydrocarbon component volatilization in contaminated soil, through extract component into
Enter polluted gas processing component, realizes processing, the recycling of greasy dirt resource and the qualified discharge of fixed gas of oil pollution soil.
The energy saving thermal desorption processing unit in situ and processing method of oil pollution soil disclosed by the embodiments of the present invention, are realized
The recycling of processing nearby of oil pollution soil, device composition is simple, easy to operate, and energy efficiency is high, and operating cost is low, processes
Journey non-pollution discharge, energy conservation and environmental protection are not necessarily to long distance transportation, the safe devoid of risk of processing procedure.
Embodiment 1
Energy saving original position thermal desorption processing unit composed structure schematic diagram example as described in Figure 1 disclosed in the present embodiment 1, in figure
Structure not in strict accordance with scale, the characteristics of convenient for prominent different components and component.
Contaminated soil after excavation is built into situ truncated rectangular pyramids shape mound heap body 1, mound heap body 1 includes four layers of pollution
Soil is laid with successively from bottom to top, and every layer of contaminated soil height is between 0.6~1m;It is laid with first layer Polluted Soil in the bottom
After earth 11, heating tube 2 and extraction tube 3 are installed, heating tube 2 is multiple, and extraction tube 3 is multiple, and heating tube 2 is spaced with extraction tube 3
Scattering device, the distance between extraction tube 3 and heating tube 2 are arranged between 30~50cm;Extraction tube 3 does slot processing;Every two
2 centre position of a heating tube placement temperature sensor (being not shown) is for monitoring this layer of contaminated soil temperature regime;It adopts
Extraction tube 3 is covered with the coarse gravel of 8~10mm, the slot of extraction tube 3 in gas extractive process is prevented to be blocked;Then it is laid with
Second layer contaminated soil 12.One end of heating tube 2 is connected with heating component 2, and the other end of heating tube 2 connects with smoke pipe phase 4 is returned
It is logical.
2) after being laid with second layer contaminated soil 12, smoke pipe 4 and extraction tube 3 are returned in installation, return smoke pipe 4 and are set as multiple, and every two
A 4 centre position of smoke pipe placement temperature sensor (not shown) of returning is for monitoring this layer of contaminated soil temperature regime;Second
The centre position of layer contaminated soil layer disposes pressure sensor (not shown) simultaneously, and pressure value represents entire mound at this
1 negative pressure condition of heap body, temperature value herein represent entire 1 repair process progress of mound heap body, and temperature reaches expectation at this
When temperature, indicate that repair process reaches terminal;Return 4 outlet end of smoke pipe and stretch out out-pile, by flue gas summarize pipeline 41 and wind turbine and
Chimney 42 is connected.
3) after being laid with third layer contaminated soil 13, heating tube 2 and extraction tube 3 are installed again.Third layer contaminated soil layer is set
Triangular arrangement each other between the heating tube 2 set and the heating tube 2 of first layer contaminated soil layer setting, every three or two heating
The outlet end of pipe 2 returns smoke pipe 4 with 1 and is connected, and flue gas is passed through to the secondary use returned and carry out heat in smoke pipe 4 again, then will
Flue gas is discharged into coupled flue gas and summarizes pipeline 41.
4) it is inserted into inert gas injection pipe in the middle layer position of second layer contaminated soil layer and third layer contaminated soil layer
51, the nitrogen that nitrogen making machine 5 generates can be blasted inside mound heap body 1, on the one hand increase flow rate of gas, accelerate pollutant
On the other hand desorption reduces oxygen content inside heap body, prevent the burning of oil appropriate hydrocarbon gas rich region or explosion in mound heap body.
4) completion mound heap body is built after top is laid with the 4th layer of contaminated soil 14.In heap body top layer and surrounding installation heat preservation
Rock wool forms insulating layer 6, and as schematically shown in Figure 2, the thickness of insulating layer 6 is not less than 80mm, is then laid with cement mortar, forms water
Cement mortar sealant 7, the thickness of cement mortar sealant 7 is not less than 60mm after hardening.
5) extraction tube 3 is connected by gas collection pipeline 31 with polluted gas processing system 32.Polluted gas processing system
It is made of gas-liquid separator, tubular heat exchanger, circulating cooling water tower, buffer tank, wind turbine, absorbent charcoal adsorption tank and dual firing chamber etc..
The wherein initial gross separation of solid particle and big drop of the gas-liquid separator for being carried in gas;Tubular heat exchanger is by circulating cooling
Water tower provides cooling water, is condensed to the oil the hydrocarbon component in gas, and the oily resource of recycling enters buffer tank and keeps in;Fixed gas
Body enters activated adoption tank and carries out adsorption treatment;Be difficult to adsorb carries out final disposal in dual firing chamber, and then realizes that tail gas reaches
Mark discharge;Wind turbine provides stripping gas, and wind turbine uses frequency conversion form, links with mound heap body internal pressure sensor, according to negative
Pressure situation adjusts frequency.
In the present embodiment, the high-temperature flue gas that burner 21 generates heats entire mound heap body 1 by heating tube 2,
Enter polluted gas processing component by extracting component after petroleum hydrocarbon component volatilization, realizes oily resource reclaim and tail gas row up to standard
It puts.Whole process continuous operation, until pollutant all removes, flue gas is after returning smoke pipe and realizing that thermal energy utilizes again, into mistake
Flue gas emission component discharges.
The energy saving thermal desorption processing unit in situ and processing method of oil pollution soil disclosed by the embodiments of the present invention, are realized
The recycling of processing nearby of oil pollution soil, device composition is simple, easy to operate, and energy efficiency is high, and operating cost is low, processes
Journey non-pollution discharge, energy conservation and environmental protection are not necessarily to long distance transportation, the safe devoid of risk of processing procedure.
Technical detail disclosed in technical solution and embodiment disclosed by the invention is merely illustrative the structure of the present invention
Think, does not constitute limitation of the invention, it is every not have a creative change to what technical detail disclosed by the invention was made, all
With present invention spirit having the same, all within the protection domain of the claims in the present invention.
Claims (10)
1. a kind of energy saving thermal desorption processing unit in situ of oil pollution soil, including:
Heating component, the heating component include heating tube, and the heating tube is arranged inside the oil pollution soil, for pair
Oil pollution soil is heated;
Component is extracted, which includes extraction tube, and the extraction tube is arranged in the oil pollution soil, for collecting
The greasy dirt isolated in the soil heated;
Flue gas emission component, including smoke pipe is returned, the smoke pipe that returns is connected with the heating tube, for discharging in the heating tube
The flue gas of discharge;
Inert gas blasts component, for generating inert gas, and blasts inside the oil pollution soil;
Monitoring assembly, including temperature detection part and pressure detecting part are arranged in the oil pollution soil, are respectively used to
Detect its internal temperature and pressure;
Polluted gas processing component is connected with the extracting component, for the greasy dirt gas to being collected in the extracting component
It is recycled.
2. the energy saving thermal desorption processing unit in situ of oil pollution soil according to claim 1, which is characterized in that described
Heating component further includes:
Burner;
One end of ceramic fire resistant pipe, the ceramic fire resistant pipe is connected with the burner, and the other end is connected with the heating tube;
Wherein, the high-temperature flue gas that the burner combustion generates passes through the ceramic fire resistant pipe, into the heating tube, to described
Heating tube heats.
3. the energy saving thermal desorption processing unit in situ of oil pollution soil according to claim 1, which is characterized in that described
Flue gas emission component further includes:
Wind turbine is connected with the smoke pipe exhaust end that returns, the power for providing flue gas emission;
Wherein, the smoke pipe that returns is arranged in the oil pollution soil, using the fume afterheat returned in smoke pipe to oil pollution
Earth is heated.
4. the energy saving thermal desorption processing unit in situ of oil pollution soil according to claim 1, which is characterized in that described
Temperature detection part includes temperature sensor, and the pressure detecting part includes pressure sensor.
5. a kind of energy saving in-situ heat desorption processing method of oil pollution soil, including:
Original place dystopy builds oil pollution soil mound;
During building oil pollution soil mound, the energy saving thermal desorption processing unit in situ of setting oil pollution soil;
Insulating layer, sealant are set gradually outside the mound for building completion;
Mound is heated, for the greasy dirt in soil by heating, volatile component enters polluted gas processing component via extracting component, real
Existing greasy dirt recycling.
6. the energy saving in-situ heat desorption processing method of oil pollution soil according to claim 5, which is characterized in that original place
Oil pollution soil mound is built into polygon prismoid shaped.
7. the energy saving in-situ heat desorption processing method of oil pollution soil according to claim 5, which is characterized in that original place
Oil pollution soil is built into multilayer mound.
8. the energy saving in-situ heat desorption processing method of oil pollution soil according to claim 5, which is characterized in that described
It is energy saving original position thermal desorption processing unit include:
Heating component, the heating component include heating tube, and the heating tube is arranged inside the oil pollution soil, for pair
Oil pollution soil is heated;
Component is extracted, which includes extraction tube, and the extraction tube is arranged in the oil pollution soil, for collecting
The greasy dirt isolated in soil that the heating component heats;
Flue gas emission component, including smoke pipe is returned, the smoke pipe that returns is connected with the heating tube, for discharging in the heating tube
The flue gas of discharge;
Inert gas blasts component, for generating inert gas, and blasts inside the oil pollution soil;
Monitoring assembly, including temperature detection part and pressure detecting part are arranged in the oil pollution soil, are respectively used to
Detect its internal temperature and pressure;
Polluted gas processing component is connected with the extracting component, for the polluted gas in the oil pollution soil
It is recycled.
9. the energy saving in-situ heat desorption processing method of oil pollution soil according to claim 8, which is characterized in that described
Heating tube be it is multiple, be separately positioned on the position of the different height of the oil pollution mound, be arranged in same height described in
Heating tube dispersion interval setting.
10. the energy saving in-situ heat desorption processing method of oil pollution soil according to claim 8, which is characterized in that institute
It states heating tube and is separately positioned on the different height position of oil pollution soil mound with the extraction tube.
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CN114425559A (en) * | 2021-12-30 | 2022-05-03 | 中国石油化工股份有限公司 | In-situ thermal desorption remediation method for soil |
CN114453405A (en) * | 2022-04-13 | 2022-05-10 | 北京高能时代环境技术股份有限公司 | Pile thermal desorption repair system and construction method for organic matter contaminated soil |
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