CN107617634A - A kind of quick device and its application method for removing volatile contaminant in soil - Google Patents
A kind of quick device and its application method for removing volatile contaminant in soil Download PDFInfo
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- CN107617634A CN107617634A CN201710893512.9A CN201710893512A CN107617634A CN 107617634 A CN107617634 A CN 107617634A CN 201710893512 A CN201710893512 A CN 201710893512A CN 107617634 A CN107617634 A CN 107617634A
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- 239000002689 soil Substances 0.000 title claims abstract description 133
- 239000000356 contaminant Substances 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000007789 gas Substances 0.000 claims abstract description 39
- 238000012545 processing Methods 0.000 claims abstract description 32
- 239000002912 waste gas Substances 0.000 claims abstract description 10
- 238000000746 purification Methods 0.000 claims abstract description 9
- 239000002245 particle Substances 0.000 claims description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000011435 rock Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 2
- 239000003344 environmental pollutant Substances 0.000 description 12
- 231100000719 pollutant Toxicity 0.000 description 12
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 10
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- -1 Reomol Chemical class 0.000 description 5
- 229910021529 ammonia Inorganic materials 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 239000000428 dust Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000005067 remediation Methods 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000002283 diesel fuel Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- JTPNRXUCIXHOKM-UHFFFAOYSA-N 1-chloronaphthalene Chemical compound C1=CC=C2C(Cl)=CC=CC2=C1 JTPNRXUCIXHOKM-UHFFFAOYSA-N 0.000 description 2
- HIXDQWDOVZUNNA-UHFFFAOYSA-N 2-(3,4-dimethoxyphenyl)-5-hydroxy-7-methoxychromen-4-one Chemical compound C=1C(OC)=CC(O)=C(C(C=2)=O)C=1OC=2C1=CC=C(OC)C(OC)=C1 HIXDQWDOVZUNNA-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003905 agrochemical Substances 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 150000001448 anilines Chemical class 0.000 description 2
- 229940111121 antirheumatic drug quinolines Drugs 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 150000001555 benzenes Chemical class 0.000 description 2
- 239000013043 chemical agent Substances 0.000 description 2
- 150000008422 chlorobenzenes Chemical class 0.000 description 2
- 150000002013 dioxins Chemical class 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical group C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 235000013312 flour Nutrition 0.000 description 2
- 231100001240 inorganic pollutant Toxicity 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 150000003071 polychlorinated biphenyls Chemical group 0.000 description 2
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 2
- 150000003222 pyridines Chemical class 0.000 description 2
- 150000003248 quinolines Chemical class 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Chemical compound [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 235000013339 cereals Nutrition 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Abstract
The invention provides a kind of quick device and method for removing volatile contaminant in soil, including hot-air blower, contaminated soil processing unit and waste gas purification apparatus, wherein the air inlet of contaminated soil processing unit and gas outlet are connected by pipeline with the gas outlet of hot-air blower and the air inlet of waste gas purification apparatus respectively, and the contaminated soil processing unit includes top and is provided with the soil bucket of gas skirt and the hot-gas system positioned at soil bucket inner bottom part.The present invention has the advantages of quick, efficient, cost is cheap.
Description
Technical field
The invention belongs to soil remediation equipment field, is specifically related to volatile contaminant in a kind of quick removal soil
Device and its application method.
Background technology
, may be by various volatile organic contaminants (VOCs) such as benzene homologues, organochlorine during the various production of mining industry
Compound, freon series, organic ketone, amine, alcohol, ether, ester, acid and oil hydrocarbon compound etc., and half volatile organic contaminant
(SVOCs), Ru dioxins, polycyclic aromatic hydrocarbon, organic agricultural chemicals class, chlorobenzene class, polychlorinated biphenyl, pyridines, quinolines, nitro
The compounds such as benzene class, Reomol, nitroso amine, phenyl amines, phenol, more chloronaphthalene classes and polybrominated biphenyl, with
And the non-volatile inorganic pollutant such as sulfide, ammonia, mercury is discharged into soil, surrounding environment and health is threatened, it is necessary to enter
Row is repaired to eliminate environmental pollution.
Volatility, the restorative procedure of half volatile pollutant parse including normal temperature, at cement kiln collaboration in traditional soil
Put, rotary furnace burns, the methods of chemical oxidation.Wherein, normal temperature parsing cost is relatively low, but floor space is big, and speed is slow, in China
Most of soil remediation engine request is pressed for time, and under conditions of site condition is limited, tends not to meet to repair to require.Other water
Stall cooperative disposal, rotary furnace burn, and are highly energy-consuming the methods of chemical oxidation, or high cost method.Cement kiln synergic processing
For the price of soil typically at 1000 yuan/ton or so, rotary furnace burns the price of soil also at 500 yuan/ton or so.And by soil
Hydrogen peroxide is added in earth, when the strong oxidizer such as sodium peroxydisulfate aoxidizes to pollutant, can also consume substantial amounts of oxidant, its into
This is also very high, soil is become more intractable mud.
The content of the invention
The invention provides a kind of quick device and its application method for removing volatile contaminant in soil.This device has
There is the advantages of volatilization removed quickly, efficiently at low cost in soil, half volatile pollutant, be especially suitable for industrial pollution soil
The removal of volatility and half volatile pollutant in earth.
The technical solution adopted by the present invention is：A kind of quick device for removing volatile contaminant in soil, including supply
Device, contaminated soil processing unit and waste gas purification apparatus, the wherein air inlet of contaminated soil processing unit and gas outlet are distinguished
It is connected by pipeline with the gas outlet of feeder and the air inlet of waste gas purification apparatus, the contaminated soil processing unit includes
Top is provided with the soil bucket of gas skirt and the hot-gas system positioned at soil bucket inner bottom part, and the hot-gas system is upper including being connected
Air chamber and lower chamber, the air inlet of the contaminated soil processing unit are located at soil bottom of the barrel and are connected with lower chamber, outlet
Mouth is on gas skirt；It is provided with cylinder groove among the upper chamber, the top of the upper chamber and lower chamber and groove
Bottom is equipped with cover plate and side wall is equipped with steam vent, and Steel net is fixed with the steam vent.
Further, the junction of the upper chamber and lower chamber is provided with support column, and the lower chamber side is additionally provided with row
Dirt mouth.
Further, the soil bucket outer bottom is provided with roller, and the outer side of soil bucket is provided with handle and rope.
Further, the feeder includes hot-air blower, between the contaminated soil processing unit and hot-air blower
Pipeline on be disposed with pressure gauge, valve and thermometer.
Further, the waste gas purification apparatus includes vavuum pump and exhaust treatment system, and the vavuum pump is by band valve
Door pipeline is connected with exhaust treatment system, and the contaminated soil processing unit is connected by band valve pipe with vavuum pump.
Further, the steam vent of the upper chamber is divided into two from center line, and steam vent is up-small and down-big.
Further, a kind of quick device application method for removing volatile contaminant in soil as claimed in claim 1,
A, soil will be contained soil water rate and drops to 10~20% by drying in advance first；
B, grain graininess is reduced to 3mm-10mm by soil by precomminution；
C, the soil after crushing is fitted into soil bucket, and hot-air then is blown into upper chamber from air inlet using hot-air blower
In lower chamber, hot-air under pressure, escapes and enter in pending soil out of steam vent, gradual raising air stream
Speed, until the soil particle on top layer starts to rock；
D, the flow control by the gas of hot-air blower blowout between soil particle is 5cm/s-60cm/s, and temperature control is
50-60 degree；
E, stripping tail gas is entered in exhaust treatment system by gas skirt.
The operation principle of the present apparatus is：
To be volatilized, the soil of half volatile contaminants uses hot-air stripping in the present apparatus, make in soil
Volatile pollutant is taken away by hot-air, and then is collected and enter at exhaust gas processing device by the gas skirt above device
Reason.Its principle is based on volatility, the volatile performance of half volatile pollutant in itself, promotes volatilization using heating, utilizes simultaneously
The flowing of air makes the pollutant on soil particle surface form concentration difference, accelerates its volatilization, and utilize the flowing fast speed belt of air
Walk pollutant.
Soil is moderately dried before processing, when being to eliminate the larger soil of direct stripping humidity, between soil particle
Moisture formed water bridge, hinder air enter the problem of.Soil is crushed to appropriate granularity before processing, is in order to avoid air
The problem of being difficult to be blown into bulk soil, intergranular pore is small when also avoiding soil particle too small, makes the air drag that is blown into too big, stream
The problem of fast slow, and dirt is easily played on top layer.
Steam vent in exhaust apparatus is located on the outside of air chamber, the shortcomings that both having prevented steam vent easily stifled, in turn ensure that exhaust
Hole and the contact area of soil.The groove exhaust structure of upper chamber, solve the Polluted Soil hot-air above it blow less than the drawbacks of.
The dust entered by steam vent in air inlet chamber, it can be discharged from the dust-exhausting port of air chamber side.
Vavuum pump forms certain vacuum in pump drainage, can reduce the boiling point of volatile matter, makes the volatilization in soil bucket
Contact scar thing can just volatilize at a lower temperature, and constantly suck contaminated soil beneficial to the fresh hot-air in air chamber.
The treatable target contaminant of the present invention includes：Various volatile organic contaminant (VOCs) such as benzene homologues, chlorination
Hydrocarbon, freon series, organic ketone, amine, alcohol, ether, ester, acid and oil hydrocarbon compound etc., and half volatile organic contaminant
(SVOCs), Ru dioxins, polycyclic aromatic hydrocarbon, organic agricultural chemicals class, chlorobenzene class, polychlorinated biphenyl, pyridines, quinolines, nitro
The compounds such as benzene class, Reomol, nitroso amine, phenyl amines, phenol, more chloronaphthalene classes and polybrominated biphenyl, with
And the non-volatile inorganic pollutant such as sulfide, ammonia, mercury.
What the present invention obtained has the beneficial effect that：The present invention has the advantages of quick, efficient, cost is cheap.Utilize electric auxiliary
The hot-air blower of heat is blown into hot-air into the soil bucket for being fitted into contaminated soil, and the volatile contaminant of stripping is entrained into through air
Enter the gas skirt of connection vavuum pump and exhaust treatment system discharge at the top of soil bucket.
Parsed relative to the huge normal temperature of floor space, the present apparatus, which centrally disposes soil, has saved a large amount of land areas；
Parsed relative to normal temperature, it is not necessary to which plant equipment turns over throwing, has saved to turn over and casts standby and process, it is thus also avoided that turn over and raised caused by throwing
Dirt, condition of work and cleaner pressure when improving reparation；Burn, used relative to cement kiln synergic processing and rotary furnace
Occupation area of equipment also greatly reduce, energy consumption substantially reduces.The unlimited place of the present invention, device is simple, easy to operate, without
Polluted Soil is transported to treatment plant, reduces cost of transportation.Roller, handle and rope are used to carry and topple over.
1st, parsed relative to the normal temperature that throwing is turned over using machinery, the present invention has greatly accelerated pollutant using heating and stripping
Volatilization process；The big soil of big airborne dust that consumes energy is avoided simultaneously and turns over throwing, and reparation speed is fast, and floor space is small, and airborne dust is small.
2nd, two kinds are burned relative to cement kiln synergic processing and rotary furnace only to burn using significantly heating to eliminate pollution
Method, heating amplitude substantially reduces, and has saved mass energy；
3rd, relative to chemical oxidization method, the present invention without using chemical agent, avoid secondary pollution that medicament brings and into
The problem of this input, it also avoid adding the large quantity of moisture brought into during chemical agent, and making soil be changed into mud；
4th, simultaneously, the present invention has carried out a large amount of optimizations by repetition test, operation side simple by the apparatus structure of optimization
Just, low is required to site condition, is repaired available for original place, reduced strange land and repair cost of transportation.
Brief description of the drawings
Fig. 1 is the structural representation of contaminated soil processing unit of the present invention.
Fig. 2 is overall structure diagram of the present invention.
Wherein 1 represents soil bucket, 2 represents gas skirt, 3 represent hot-air blower, 4 represent upper chamber, 5 represent lower chamber, 6 generations
Table top cover, 7 represent steam vent, 8 represent groove, 9 represent roller, 10 represent handle, 11 represent rope, 12 represent vavuum pump, 13
Represent exhaust treatment system, 14 represent support column.
Embodiment
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of changes, modification can be carried out to these embodiments, replace without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
As shown in Fig. 2 a kind of quick device for removing volatile contaminant in soil, including feeder, contaminated soil
Processing unit and waste gas purification apparatus, the wherein air inlet of contaminated soil processing unit and gas outlet are respectively by pipeline and supply
The gas outlet of device is connected with the air inlet of waste gas purification apparatus.The waste gas purification apparatus includes vavuum pump 12 and exhaust-gas treatment
System 13, the vavuum pump 12 are connected by band valve pipe with exhaust treatment system 13, and the contaminated soil processing unit is borrowed
Band valve pipe is helped to be connected with vavuum pump 12.The feeder includes hot-air blower 3, the contaminated soil processing unit and heat
Pressure gauge, valve and thermometer are disposed with pipeline between air blower 3.The outer bottom of soil bucket 1 is provided with roller 9,
1 outer side of soil bucket is provided with handle 10 and rope 11.
As shown in Figure 1：The contaminated soil processing unit includes top and is provided with the soil bucket 1 of gas skirt 2 and positioned at soil
The hot-gas system of 1 inner bottom part of bucket, the hot-gas system include the upper chamber 4 and lower chamber 5 being connected, the contaminated soil processing
The air inlet of device is located at the bottom of soil bucket 1 and is connected with lower chamber 5, gas outlet is located on gas skirt 2；The upper chamber 4
Centre is provided with cylinder groove 8, and the top of the upper chamber 4 and lower chamber 5 and the bottom of groove 8 are equipped with cover plate 6 and side wall
Steam vent 7 is equipped with, Steel net is fixed with the steam vent 7.The junction of the upper chamber 4 and lower chamber 5 is provided with branch
Dagger 14, the side of lower chamber 5 are additionally provided with dust-exhausting port.The steam vent 7 of the upper chamber 4 is divided into two from center line, steam vent 7
It is up-small and down-big.
During specific implementation：The device for removing volatile contaminant in soil based on said structure design, it is when in use, first
First pass through to dry and the moisture pre-processed in soil is reduced to below plastic limit, then soil is crushed using pulverizer and existed for granularity
3mm-10mm or so particle.Soil after crushing is fitted into soil bucket 1, then using heater blower 3 by hot-air from entering
Gas port is blown into upper chamber 4 and lower chamber 5, and hot-air is discharged simultaneously out of upper lower chamber side steam vent 7 under pressure
Into in pending soil, gradual raising air flow velocity, until the soil particle on top layer starts to rock, air is then slightly turned down again
Flow velocity, it is 5cm/s-60cm/s by mean flow rate control of the gas of hot-air blower blowout between soil particle, temperature control is
50-60 degree.Stripping time is small-scale according to volatility, the reparation desired value of half volatile pollutant in rehabilitating soil, and interior
The result of stripping experiment determines.In disposal process, tail gas caused by stripping will be collected and handle, to prevent from polluting environment.
Soil after disposal can carry out landfill and other disposal.Dust in lower chamber 5 is discharged in cleaning from dust-exhausting port.Steel wire
Filter screen stops or reduced that soil enters in lower chamber 5, and support column 14 plays support upper chamber 4, and roller 9, handle 10 and rope 11 are used
In carrying and topple over.
Hot-air blower 3 is blown into the air temperature control of soil at 50-60 DEG C.Temperature is too low, then too slow, the shadow of pollutant volatilization
Ring and repair speed；Temperature is too high, although reparation speed can be improved, heating air can consume the substantial amounts of energy, can significantly
Improve cost.Further, since 60 DEG C of temperature can make pollutant quickly volatilize in a short time, remediation efficiency has compared
It is higher, then improve the lifting of temperature remediation efficiency less.Hot-air blower 3 is blown into the air of soil, its being averaged between soil particle
Flow control is in 5cm/s-60cm/s.Flow velocity is too low, then remediation efficiency is very low；Flow velocity is too high, then can blow away soil particle, is formed
Floating dust pollution.
Case study on implementation 1：
Soil containing diesel oil is handled, soil property is flour sand, and initial aqueous rate is 10~15%, the 48g/ of initial concentration containing diesel oil
kg.Handled using present invention design device.Prepared single internal diameter of device soil bucket 1 is 1.4m, high 1.8m, outside lower chamber 5
Footpath 1.0m, high 20cm, 0.6 meter of 4 external diameter of upper chamber, high 20cm.Filling soil side amount is 2.2m every time3, ventilation 8000-
9000m3/ h, intake air temperature are 55 degree.
Treatment effect：After processing 2 hours, remaining diesel oil concentration 18g/kg, clearance 62.5% in soil.
Case study on implementation 2：
Soil containing ammonia is handled, soil property is flour sand, and initial aqueous rate is 11-16%, and always ammonia content is in soil
3180mg/kg.Handled using present invention design device.Prepared single internal diameter of device soil bucket 1 is 1.4m, high 1.8m, under
Air chamber 5 external diameter 1.0m, high 20cm, 0.6 meter of 4 external diameter of upper chamber, high 20cm.Filling soil side amount is 2.2m every time3, ventilation is
8000-9000m3/ h, intake air temperature are 53 degree.
Treatment effect：After processing 3 hours, remaining ammonia density 1725mg/kg, clearance 45.7% in soil.
Case study on implementation 3：
Sulfide hydrogen soil is handled, soil property is sandy silt, and initial aqueous rate is 12-18%, total sulfur root in soil
Ion concentration is 2060mg/kg.Handled using present invention design device.Handled using present invention design device.Institute
It is 1.4m to prepare single internal diameter of device soil bucket 1, high 1.8m, lower chamber 5 external diameter 1.0m, high 20cm, and 0.6 meter of 4 external diameter of upper chamber is high
20cm.Filling soil side amount is 2.2m every time3, ventilation 8000-9000m3/ h, intake air temperature are 56 degree.
Treatment effect：After processing 2 hours, remaining sulphur ion concentration 605mg/kg, clearance 70.6% in soil.
Claims (7)
1. a kind of quick device for removing volatile contaminant in soil, including feeder, contaminated soil processing unit and useless
Air purifying apparatus, the wherein air inlet of contaminated soil processing unit and gas outlet are respectively by the gas outlet of pipeline and feeder
It is connected with the air inlet of waste gas purification apparatus, it is characterised in that：The contaminated soil processing unit is provided with gas skirt including top
(2) soil bucket (1) and the hot-gas system positioned at soil bucket (1) inner bottom part, the hot-gas system include the upper chamber being connected
(4) it is located at soil bucket (1) bottom with lower chamber (5), the air inlet of the contaminated soil processing unit and is connected with lower chamber (5)
Logical, gas outlet is located on gas skirt (2)；Be provided with cylinder groove (8) among the upper chamber (4), the upper chamber (4) and under
The top of air chamber (5) and the bottom of groove (8) are equipped with cover plate (6) and side wall is equipped with steam vent (7), the steam vent (7)
On be fixed with Steel net.
A kind of 2. quick device for removing volatile contaminant in soil according to claim 1, it is characterised in that：On described
The junction of air chamber (4) and lower chamber (5) is provided with support column (14), and lower chamber (5) side is additionally provided with dust-exhausting port.
A kind of 3. quick device for removing volatile contaminant in soil according to claim 1, it is characterised in that：The soil
Earth bucket (1) outer bottom is provided with roller (9), and soil bucket (1) outer side is provided with handle (10) and rope (11).
A kind of 4. quick device for removing volatile contaminant in soil according to claim 1, it is characterised in that：The confession
Device of air includes hot-air blower (3), is disposed with the pipeline between the contaminated soil processing unit and hot-air blower (3)
Pressure gauge, valve and thermometer.
A kind of 5. quick device for removing volatile contaminant in soil according to claim 1, it is characterised in that：It is described useless
Air purifying apparatus includes vavuum pump (12) and exhaust treatment system (13), and the vavuum pump (12) is by band valve pipe and waste gas
Processing system (13) is connected, and the contaminated soil processing unit is connected by band valve pipe with vavuum pump (12).
A kind of 6. quick device for removing volatile contaminant in soil according to claim 1, it is characterised in that：On described
The steam vent (7) of air chamber (4) is divided into two from center line, and steam vent (7) is up-small and down-big.
A kind of 7. quick device application method for removing volatile contaminant in soil as claimed in claim 1, it is characterised in that：
A, soil will be contained soil water rate and drops to 10~20% by drying in advance first；
B, grain graininess is reduced to 3mm-10mm by soil by precomminution；
C, the soil after crushing is fitted into soil bucket (1), and hot-air then is blown into upper gas from air inlet using hot-air blower (3)
In room (4) and lower chamber (5), hot-air under pressure, is escaped and enter in pending soil from steam vent (7) is interior, by
Gradually raising air flow velocity, until the soil particle on top layer starts to rock；
D, the flow control by the gas of hot-air blower (3) blowout between soil particle is 5cm/s-60cm/s, and temperature control is
50-60 degree；
E, stripping tail gas is entered in exhaust treatment system (13) by gas skirt (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710893512.9A CN107617634A (en) | 2017-09-28 | 2017-09-28 | A kind of quick device and its application method for removing volatile contaminant in soil |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710893512.9A CN107617634A (en) | 2017-09-28 | 2017-09-28 | A kind of quick device and its application method for removing volatile contaminant in soil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109675921A (en) * | 2019-01-11 | 2019-04-26 | 浙江亿可利环保科技有限公司 | The continuous direct thermal desorption system of organic polluted soil and its thermal desorption method |
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| CN109675921B (en) * | 2019-01-11 | 2023-09-05 | 浙江亿可利环保科技有限公司 | Continuous organic contaminated soil direct thermal desorption system and thermal desorption method thereof |
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