CN108405591A - The system and method that room temperature desorbs greenhouse treatment effeciency is improved using high temperature soil waste heat - Google Patents
The system and method that room temperature desorbs greenhouse treatment effeciency is improved using high temperature soil waste heat Download PDFInfo
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- CN108405591A CN108405591A CN201810450051.2A CN201810450051A CN108405591A CN 108405591 A CN108405591 A CN 108405591A CN 201810450051 A CN201810450051 A CN 201810450051A CN 108405591 A CN108405591 A CN 108405591A
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- 239000002689 soil Substances 0.000 title claims abstract description 107
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000002918 waste heat Substances 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 62
- 238000010438 heat treatment Methods 0.000 claims abstract description 48
- 238000003795 desorption Methods 0.000 claims abstract description 43
- 238000000197 pyrolysis Methods 0.000 claims abstract description 22
- 239000000428 dust Substances 0.000 claims abstract description 21
- 238000005453 pelletization Methods 0.000 claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 8
- 238000012546 transfer Methods 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 11
- 238000001179 sorption measurement Methods 0.000 abstract description 8
- 238000005067 remediation Methods 0.000 abstract description 7
- 230000008439 repair process Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 18
- 230000000694 effects Effects 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 229920003020 cross-linked polyethylene Polymers 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N monobenzene Natural products C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- PZZOEXPDTYIBPI-UHFFFAOYSA-N 2-[[2-(4-hydroxyphenyl)ethylamino]methyl]-3,4-dihydro-2H-naphthalen-1-one Chemical compound C1=CC(O)=CC=C1CCNCC1C(=O)C2=CC=CC=C2CC1 PZZOEXPDTYIBPI-UHFFFAOYSA-N 0.000 description 1
- 208000019901 Anxiety disease Diseases 0.000 description 1
- 230000036506 anxiety Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920006327 polystyrene foam Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
Classifications
-
- 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
- B09C1/065—Reclamation of contaminated soil thermally by pyrolysis
Abstract
The system and method that room temperature desorbs greenhouse treatment effeciency is improved using high temperature soil waste heat the invention discloses a kind of, which includes heat-exchange system, room temperature desorption greenhouse ground heating system and soil dust pelletizing system, and it includes heating coil that room temperature, which desorbs greenhouse ground heating system,；Heat-exchange system includes heat exchange chute, heat exchange chute is connected with heating coil, soil dust pelletizing system includes dirt pocket, sealed dustproof canopy and transport riding track, one end of dirt pocket connects heat exchange chute, other end connection transportation riding track, sealed dustproof canopy is arranged in the top of dirt pocket, and sealed dustproof canopy is equipped with sprinkling equipment.The waste heat of high temperature soil is as heat source after the present invention repairs high temperature pyrolysis adsorption technology, the heating of greenhouse floor heating circulation water is desorbed for room temperature, soil cools down after realizing reparation while improving normal temperature desorption technique remediation efficiency, the treatment effeciency for improving room temperature desorption simultaneously, reduces investment outlay and operating cost.
Description
Technical field
It is specifically a kind of to improve room temperature desorption using high temperature soil waste heat the present invention relates to a kind of soil remediation technology field
The system and method for greenhouse treatment effeciency.
Background technology
Soil is material base for the survival of mankind, is the important component of ecological environment.With the hair of industrial or agricultural
The continuous expansion of exhibition and urbanization process, soil environment are worsening.Joined within 2014 according to Environmental Protection Department and Ministry of Land and Resources
The data for closing the national Soil Pollution Investigation bulletin of publication show that national soil environment situation totally allows of no optimist, part
Pollution of soil is heavier, and arable soil environmental quality causes anxiety, industry and mining discarded ground soil environment outstanding problem.In the dirt of soil
Contaminate type in, organic contamination accounts for significant proportion, mainly at present with will discard retired industry and polluted enterprises
It is generating in process of production, topple over discharge and leakage pollutant.Current contaminated place is mainly used for or will use
In building resident living cell or other construction, the pollution situation in place becomes the major limiting factors built, seriously affects
The production and living and ecological environment security of people, become environmental problem urgently to be resolved hurrily.
The peripheral doses technology that high temperature pyrolysis adsorption technology and normal temperature desorption technique are administered as organic polluted soil has suitable
With range it is wide, it is simple for process it is easy to operate, be not seriously limited by the site, remediation efficiency is high, pollutant removal thoroughly and can be effectively prevent
The advantages that administering the secondary pollution in repairing.But traditional high temperature pyrolysis is inhaled and normal temperature desorption technique exist in engineer application with
Lower problem：
High temperature pyrolysis adsorption technology needs to use a large amount of combustion gas, fuel oil or fine coal during repairing and treating contaminated soil
Ash is used as the energy, is reached a high temperature the effect of pyrolysis with improving temperature.For soil after reparation due to high temperature pyrolysis effect, temperature is excessively high
It is not easy to transport, and soil particle is very thin, easy tos produce airborne dust and cause secondary pollution.
Due to mainly being operated at normal temperatures, temperature and region are affected normal temperature desorption technique to implementing to repair, the summer
Season or weather temperature it is high regional remediation efficiency it is higher, higher pollutants removal rate can be reached, in autumn and winter or
The low area of climate temperature is extremely difficult to ideal treatment effeciency and repairing effect.
And at present also there is not yet being combined for administering volatilization or half with normal temperature desorption technique using high temperature pyrolysis adsorption technology
The related report of volatility organic polluted soil.
Invention content
It is improved at room temperature desorption greenhouse using high temperature soil waste heat technical problem to be solved by the invention is to provide a kind of
The system and method for efficiency is managed, it combines high temperature pyrolysis adsorption technology with normal temperature desorption technique for administering volatilization or half volatile
Organic polluted soil can make full use of waste heat, and improve remediation efficiency, prevent from generating secondary pollution in repair process.
The present invention solves above-mentioned technical problem with following technical solution：
The system that the present invention improves room temperature desorption greenhouse treatment effeciency using high temperature soil waste heat, it includes heat exchange series
System, room temperature desorption greenhouse ground heating system and soil dust pelletizing system, the room temperature desorption greenhouse ground heating system includes heating coil；Institute
It includes heat exchange chute to state heat-exchange system, and heat exchange chute is used for the conveying and cooling of high temperature soil, heat exchange chute with
Heating coil is connected, and realizes the circulating water heating in heating coil；The soil dust pelletizing system includes dirt pocket, sealed dustproof
Canopy and transport riding track, one end connection heat exchange chute of dirt pocket, the other end connection transportation riding track of dirt pocket, dirt pocket
Sealed dustproof canopy is arranged in top, and sealed dustproof canopy is equipped with for the sprinkling equipment to soil dedusting.
Room temperature desorption greenhouse ground heating system further include the face layer from top to bottom set gradually, filled layer, heat insulation layer and
Damp-proof layer, the heating coil are placed in the top of heat insulation layer, filled layer are arranged between heating coil.
The heat exchange chute is made of seamless steel pipe, and both ends are respectively equipped with water high temperature resistant water pump and the resistance to height of return water
Warm water pump.
The method that the present invention improves room temperature desorption greenhouse treatment effeciency using high temperature soil waste heat, it includes that following operation walks
Suddenly：
1) processing system is built：Heat-exchange system is installed, which includes fluid passage and soil transfer passage,
The heating coil that fluid passage desorbs greenhouse ground heating system with room temperature is connected, the soil transfer passage and soil of heat-exchange system
Dust pelletizing system connects；
2) start processing system：High temperature pyrolysis is inhaled in the high temperature soil feeding heat-exchange system after repairing and carries out hot friendship
It changes, so that the soil moisture is down to 40 DEG C -50 DEG C, then soil is sent into after soil dust pelletizing system carries out spraying and dedusting and is transported outward；Heat exchange
Afterwards from the fluid passage of heat-exchange system come out liquid enter room temperature desorb greenhouse ground heating system heating coil in and formed
It circulates, while greenhouse ground temperature being made to increase.
In the step 2), it is 300 DEG C -350 DEG C that the high temperature pyrolysis, which inhales the high temperature soil after repairing,.
In the step 1), the fluid passage both ends of the heat-exchange system, which are equipped with, removes water high temperature resistant water pump and the resistance to height of return water
Warm water pump removes the flow of water high temperature resistant water pump and return water high temperature resistant water pump by control, makes the feed water inlet temperature of grounding heat coil tube be
70 DEG C -80 DEG C, outlet temperature is 15 DEG C -25 DEG C.
Compared with prior art, the present invention has the advantages that：
1) waste heat of the high temperature soil after the present invention inhales reparation using high temperature pyrolysis as heat source, by heat-exchange system plus
Recirculated water in hot greenhouse grounding heat coil tube improves the soil moisture, to improve the treatment effeciency of room temperature desorption, reduces simultaneously
High temperature pyrolysis inhales the temperature of soil after reparation, and the soil moisture can be down to 40 DEG C -50 DEG C, and be transported outward after spraying and dedusting, scene
Without airborne dust, anhydrous steam leakage, convenience in transport.
2) soil moisture after high temperature thermal desorption of the present invention is repaired is native after heat-exchange system up to 300 DEG C -350 DEG C
Earth temperature is down to 40 DEG C -50 DEG C, and the circulating water temperature into normal temperature desorption booth grounding heat coil tube is 70 DEG C -80 DEG C, rate of heat exchange
>=95%, the soil moisture in room temperature desorption greenhouse can be made to increase 30 DEG C -35 DEG C.
3) high temperature soil soil moisture after heat exchange chute carries out heat exchange after high temperature thermal desorption of the present invention is repaired
40 DEG C -50 DEG C are down to, is transported outward after spraying and dedusting；Scene is without airborne dust, anhydrous steam leakage.
4) high temperature pyrolysis adsorption technology and normal temperature desorption technique are combined by the present invention, not only realize the reasonable abundant profit of the energy
With meeting the demand of the objective and development amphitypy society of China of environment remediation；But also realize that waste heat recycles, it not only improves and repaiies
Cost has been saved in the implementation for journey of returning to work again；Meanwhile the combination of both high temperature pyrolysis adsorption technology and room temperature pyrolysis adsorption technology, break often
Warm desorption technique is restricted by temperature condition, so that technique is no longer influenced by season and region, is improved repairing quality
And remediation efficiency.
Description of the drawings
Fig. 1 is the process flow diagram that the present invention improves room temperature desorption greenhouse treatment effeciency using high temperature soil waste heat.
Fig. 2 is the structural schematic diagram of room temperature desorption greenhouse ground heating system in Fig. 1.
Fig. 3 is the structural schematic diagram of heat-exchange system and the combination installation of soil dust pelletizing system in Fig. 1.
In figure：1- damp-proof layers, 2- heat insulation layers, 3- heating coils, 4- filled layers, 5- steel plate surface layers, 6- high temperature soil entrances,
7- heat exchange chutes, 8- soil dirt pockets, 9- soil transport riding tracks, 10- sealed dustproof canopies.
Specific implementation mode
Technical scheme of the present invention will be further described below in conjunction with the accompanying drawings：
As shown in Fig. 1-Fig. 3, the present invention improves the system packet of room temperature desorption greenhouse treatment effeciency using high temperature soil waste heat
Include heat-exchange system, room temperature desorption greenhouse ground heating system and soil dust pelletizing system, the knot of the room temperature desorption greenhouse ground heating system
Structure as shown in Fig. 2, it includes heating coil 3, steel plate surface layer 5, filled layer 4, heat insulation layer 2 and damp-proof layer 1, fill by steel plate surface layer 5
Layer 4, heat insulation layer 2 and damp-proof layer 1 are arranged successively from top to bottom, and heating coil 3 uses parallel type, is placed in the top of heat insulation layer 2, adds
Filled layer 4 is set between hot coil 3, and it is buried installation which, which desorbs greenhouse ground heating system,.
The structure of the heat-exchange system and soil dust pelletizing system is as shown in figure 3, heat-exchange system includes heat exchange chute
7, heat exchange chute 7 is equipped with circulating water channel and soil transfer passage, and the circulating water channel is connected with heating coil 3, institute
One end connection high temperature soil entrance 6 of soil transfer passage is stated, the other end connects soil dust pelletizing system.The soil dust pelletizing system
Including soil dirt pocket 8, sealed dustproof canopy 10 and transport riding track 9, one end of soil dirt pocket 8 connects heat exchange chute 7
Soil transfer passage, the other end connection transportation riding track 9 of dirt pocket 8, the top setting sealed dustproof canopy 10 of soil dirt pocket 8,
Sealed dustproof canopy 10 is equipped with a plurality of spray header for soil dedusting.The heat-exchange system and soil dust pelletizing system use
Built-in type is installed.
Heat exchange chute 7 of the present invention is made of seamless steel pipe, and both ends are installed respectively removes water high temperature resistant water pump
With return water high temperature resistant water pump.
As shown in Figure 1, the method that the present invention improves room temperature desorption greenhouse treatment effeciency using high temperature soil waste heat, including such as
Lower operating procedure：
1) processing system is built：Heat-exchange system, room temperature desorption greenhouse ground heating system and soil dust pelletizing system are installed, specifically
Structure is shown in Fig. 2 and Fig. 3；
2) start processing system：The soil (300 DEG C -350 DEG C) that high temperature pyrolysis is inhaled after repairing is passed through into high temperature soil entrance 6
Into the soil transfer passage of heat exchange chute 7, soil dirt pocket 8 is entered back into after heat exchange, is passed through in the process
Heat exchange chute 7 heats the recirculated water in fluid passage, and the recirculated water after heating enters greenhouse grounding heat coil tube 3, while to entering
The water temperature of greenhouse grounding heat coil tube 3 carries out real time on-line monitoring, and when temperature rises to 80 DEG C or so, water high-temperature resistant water is removed by control
Pump and return water high temperature resistant water pump flow, make grounding heat coil tube feed water inlet temperature be 70 DEG C -80 DEG C, outlet temperature be 15 DEG C -
25℃。
After high temperature soil after high temperature pyrolysis suction reparation enters soil dirt pocket 8, the shower water of sealed dustproof canopy 10 is opened,
After being dusted to soil, soil is transported through soil transport riding track 9 by forklift, sealed dustproof canopy 10 rises closed in the process
Effect prevents the vapor that dust and spray generate in the process excessive.
The present invention inhales the high temperature soil after repairing using high temperature pyrolysis and desorbs room temperature in greenhouse floor heating after heat exchange
Circulating water temperature is passed through after increasing in greenhouse grounding heat coil tube again, by carrying out heat exchange with the contaminated soil accumulated in greenhouse, is carried
The high temperature of contaminated soil.The temperature that soil is also reduced while improving greenhouse floor heating temperature, after being reduced to temperature
Soil carries out spraying and dedusting, in order to transport and prevent secondary pollution.
The heat insulation layer 2 of soil dust pelletizing system of the present invention is made of polystyrene foam plastics, with reduce heat to
Under invalid diffusion.
For heat exchange chute 7 of the present invention using the seamless steel pipe of a diameter of 150mm, seamless steel pipe pipeline is heat pipe
Road and with room temperature desorb greenhouse grounding heat coil tube be connected, both ends installation go water high temperature resistant water pump and return water high temperature resistant water pump work
For the power water pump of floor heating circulation water；Go water high temperature resistant water pump that the water after heating is injected room temperature desorption greatly from heat exchange chute 7
Canopy grounding heat coil tube, return water high temperature resistant water pump by with the recirculated water after heat exchange in soil in greenhouse from normal temperature desorption booth grounding heat coil tube
Re-injection makes recirculated water Repeat-heating to heat exchange chute 7.
It is the specific implementation case of the present invention below：
Soil waste heat is as heat source, heating after certain northern Polluted Soil repairing and treating place winter inhales reparation using high temperature pyrolysis
Recirculated water in normal temperature desorption booth grounding heat coil tube heats the Polluted Soil in greenhouse, the main mesh of Polluted Soil in greenhouse
It is benzene and naphthalene to mark pollutant；The amount that the project high temperature pyrolysis inhales rehabilitating soil is 20m3/ h, 320 DEG C of temperature of being unearthed, heat exchange flow
Slot is 5 meters high, 2 meters wide, and 45 ° of materials of designed inclination angle degree are armored concrete；After heat exchange, the high temperature soil moisture is by 320
DEG C it is down to 55 DEG C；After heat exchange chute heat exchanger carries out heat exchange, normal temperature desorption booth grounding heat coil tube water inlet water temperature
Reach 80 DEG C or so, water inlet flow 35m3/h-40m3/h；Greenhouse room temperature is positively retained at 30 DEG C or so, and the soil moisture is by original
0 DEG C -5 DEG C are increased to 35 DEG C or so；The seamless steel pipe of heat exchange chute heat exchanger selection diameter 150mm, tube spacing 100mm,
Grounding heat coil tube selects crosslinked polyethylene pipe (PE-X), caliber 20mm, thickness 2mm, 0.94~0.95g/cm of density3, spacing is
250mm；After greenhouse grounding heat coil tube heat exchange, coil pipe outlet temperature is reduced to 22 DEG C or so；Pass through the system so that room temperature
Desorption technique has broken the low condition limitation of northern China winter temperature, has obtained preferable treatment effect, has made going for pollutant
Except rate has reached 95% or more.
Claims (6)
1. the system for improving room temperature desorption greenhouse treatment effeciency using high temperature soil waste heat, it is characterised in that：It includes heat exchange
System, room temperature desorption greenhouse ground heating system and soil dust pelletizing system, the room temperature desorption greenhouse ground heating system includes heating coil；
The heat-exchange system includes heat exchange chute, and heat exchange chute is used for the conveying and cooling of high temperature soil, heat exchange chute
It is connected with heating coil, realizes the circulating water heating in heating coil；The soil dust pelletizing system includes dirt pocket, closed anti-
Dirt canopy and transport riding track, one end of dirt pocket connect heat exchange chute, the other end connection transportation riding track of dirt pocket, dirt pocket
Top be arranged sealed dustproof canopy, sealed dustproof canopy be equipped with for the sprinkling equipment to soil dedusting.
2. the system for utilizing high temperature soil waste heat to improve room temperature desorption greenhouse treatment effeciency according to claim 1, feature
It is：Room temperature desorption greenhouse ground heating system further includes the face layer from top to bottom set gradually, filled layer, heat insulation layer and moisture-proof
Layer, the heating coil are placed in the top of heat insulation layer, filled layer are arranged between heating coil.
3. according to claim 1 or claim 2 improve the system that room temperature desorbs greenhouse treatment effeciency, spy using high temperature soil waste heat
Sign is：The heat exchange chute is made of seamless steel pipe, and both ends are respectively equipped with water high temperature resistant water pump and the resistance to height of return water
Warm water pump.
4. the method for improving room temperature desorption greenhouse treatment effeciency using high temperature soil waste heat, it is characterised in that：It includes following behaviour
Make step：
1) processing system is built：Heat-exchange system is installed, which includes fluid passage and soil transfer passage, liquid
The heating coil that channel desorbs greenhouse ground heating system with room temperature is connected, soil transfer passage and the soil dedusting of heat-exchange system
System connects；
2) start processing system：High temperature pyrolysis is inhaled in the high temperature soil feeding heat-exchange system after repairing and carries out heat exchange, is made
The soil moisture is down to 40 DEG C -50 DEG C, then soil is sent into after soil dust pelletizing system carries out spraying and dedusting and is transported outward；From heat after heat exchange
The fluid passage of exchange system come out liquid enter room temperature desorption greenhouse ground heating system heating coil in and form recycle stream
It is dynamic, while greenhouse ground temperature being made to increase.
5. the method for utilizing high temperature soil waste heat to improve room temperature desorption greenhouse treatment effeciency according to claim 4, feature
It is：In the step 2), it is 300 DEG C -350 DEG C that the high temperature pyrolysis, which inhales the high temperature soil after repairing,.
6. the method for utilizing high temperature soil waste heat to improve room temperature desorption greenhouse treatment effeciency according to claim 4, feature
It is：In the step 1), the fluid passage both ends of the heat-exchange system, which are equipped with, removes water high temperature resistant water pump and return water high temperature resistant
Water pump removes the flow of water high temperature resistant water pump and return water high temperature resistant water pump by control, and it is 70 to make the feed water inlet temperature of grounding heat coil tube
DEG C -80 DEG C, outlet temperature is 15 DEG C -25 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810450051.2A CN108405591A (en) | 2018-05-11 | 2018-05-11 | The system and method that room temperature desorbs greenhouse treatment effeciency is improved using high temperature soil waste heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810450051.2A CN108405591A (en) | 2018-05-11 | 2018-05-11 | The system and method that room temperature desorbs greenhouse treatment effeciency is improved using high temperature soil waste heat |
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| Publication Number | Publication Date |
|---|---|
| CN108405591A true CN108405591A (en) | 2018-08-17 |
Family
ID=63138869
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810450051.2A Withdrawn CN108405591A (en) | 2018-05-11 | 2018-05-11 | The system and method that room temperature desorbs greenhouse treatment effeciency is improved using high temperature soil waste heat |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110340126A (en) * | 2019-06-28 | 2019-10-18 | 中节能大地环境修复有限公司 | Contaminated soil heterotopic thermal desorption processing method and its thermal desorption system |
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