CN207479185U - A kind of prosthetic device of thermal desorption processing contaminated soil - Google Patents
A kind of prosthetic device of thermal desorption processing contaminated soil Download PDFInfo
- Publication number
- CN207479185U CN207479185U CN201721730375.9U CN201721730375U CN207479185U CN 207479185 U CN207479185 U CN 207479185U CN 201721730375 U CN201721730375 U CN 201721730375U CN 207479185 U CN207479185 U CN 207479185U
- Authority
- CN
- China
- Prior art keywords
- thermal desorption
- soil
- contaminated soil
- prosthetic device
- processing contaminated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000003795 desorption Methods 0.000 title claims abstract description 38
- 239000002689 soil Substances 0.000 title claims abstract description 38
- 238000003756 stirring Methods 0.000 claims abstract description 19
- 238000002485 combustion reaction Methods 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 3
- 238000005067 remediation Methods 0.000 abstract description 2
- 239000003814 drug Substances 0.000 description 9
- 239000003344 environmental pollutant Substances 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- DXBHBZVCASKNBY-UHFFFAOYSA-N 1,2-Benz(a)anthracene Chemical compound C1=CC=C2C3=CC4=CC=CC=C4C=C3C=CC2=C1 DXBHBZVCASKNBY-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- 235000012255 calcium oxide Nutrition 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001868 water Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000003802 soil pollutant Substances 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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- Processing Of Solid Wastes (AREA)
Abstract
The utility model discloses a kind of prosthetic devices of thermal desorption processing contaminated soil, belong to environment remediation technical field.The device includes stirring system and combustion system, and the pretreatment system is connected by conveyer belt with stirring system, and the stirring system is connected by conveyer belt with thermal desorption system, and the thermal desorption system is connected with combustion system.Technical solutions of the utility model solve the problems, such as thermal desorption recovery technique high energy consumption, are greatly improved the utilization rate of heat.
Description
Technical field
The present invention relates to environment remediation technical fields, and in particular to a kind of prosthetic device of thermal desorption processing contaminated soil,
It is particularly suitable for the reparation of volatility/half volatile organic polluted soil.
Background technology
The resettlement of the contaminating enterprises such as the implementation of national " moving back two into three ", " Tui Chengjin gardens " policy, a large amount of chemical industry, metallurgy, oil,
And there are serious pollution problems for left place soil after these enterprises removes.World Bank's publication in 2010《China
The As-Is analysis of the reparation and redevelopment of contaminated site》Report display, industrial enterprise, which is moved in the place left, has nearly 1/5 to deposit
In more serious pollution.Chinese Ministry of Environmental Protection and 2005-2013 years national Soil Pollution Investigation bulletins of Ministry of Land and Resources's publication, knot
Fruit is shown in Industrial-Enterprises in China land used, has the soil higher than 30% to be contaminated.During redevelopment utilizes, in soil
Organic pollution can directly affect the health of the mankind.Therefore, it is necessary to properly disposed to contaminated soil, ensure the mankind with
The safety of environment.
At present, for organic contamination, common restorative procedure has room temperature parsing, chemical oxidation, thermal desorption.Room temperature parses skill
Art is directed to volatile, low boiling point organic contamination；The intermediate product of chemical oxidation techniques may cause secondary pollution.
Utility model content
In order to solve the problems, such as thermal desorption recovery technique high energy consumption, the utility model patent provides a kind of thermal desorption processing
The prosthetic device of contaminated soil.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of prosthetic device of thermal desorption processing contaminated soil, which includes stirring system and combustion system, described
Pretreatment system is connected by conveyer belt with stirring system, and the stirring system is connected by conveyer belt with thermal desorption system,
The thermal desorption system is connected with combustion system.
In technical solutions of the utility model：Dosing position in storehouse is in the top of stirring system.
In technical solutions of the utility model：Exhaust treatment system is connected respectively with stirring system and thermal desorption system.
A kind of restorative procedure that thermal desorption processing contaminated soil is realized using above device, it is specific as follows：
1) the soil pretreatment stage：Soil to be repaired is transported in disposal site, is carried out sieving approach pretreatment, is made soil particle diameter
Less than 30mm；
2) the medicament addition stage：The life stone that step 1) treated soil adds a certain amount of ratio through dosing storehouse will be passed through
Ash makes medicament be uniformly mixed with soil by agitating device.Added medicament percentage be 3-8% (soil weight in wet base meter), a side
Face adjusts soil moisture content, and releasable heat after the addition of one side medicament promotes the volatilization of part volatile organic matter, after saving
Continuous processing；
3) thermal desorption is handled：By step 2), treated that soil is delivered to that thermal desorption rotary kiln carries out thermal desorption processing.Place
Reason temperature is 300-550 DEG C, after handling 15-35min, stops heating, soil is sent by cold treatment to area to be checked by treated
It is to be checked.
4) rotary kiln exhaust gas is handled：The exhaust gas that thermal desorption generates is after active carbon adsorber removes, into embedded fire proofed wood
In the oxidation Burning Room for expecting thermal insulation layer.Indoor 1200 DEG C of high temperature of holding, and the tail gas containing pollutant is maintained by ventilating system
It stops wherein more than 2 seconds, pollutant is broken down into the final products such as carbon dioxide, sulfur dioxide and water vapour, without secondary dirt
Dye.
The beneficial effects of the utility model：
Technical solutions of the utility model solve the problems, such as thermal desorption recovery technique high energy consumption, are greatly improved the profit of heat
With rate.
Description of the drawings
Fig. 1 is the schematic device of the utility model.
1：Pretreatment system；2：Conveyer belt；3：Dosing storehouse；4：Stirring system；5：Thermal desorption system；6：Combustion system；7：
Exhaust treatment system.
Specific embodiment
The utility model is described further, but the scope of protection of the utility model is not limited to reference to embodiment
This：
A kind of prosthetic device of thermal desorption processing contaminated soil, it is characterised in that：The device includes stirring system (4) and combustion
Burning system (6), the pretreatment system (1) are connected by conveyer belt (2) with stirring system (4), the stirring system (4)
It is connected by conveyer belt (2) with thermal desorption system (5), the thermal desorption system (5) is connected with combustion system (6).Dosing storehouse
(3) positioned at the top of stirring system (4).Exhaust treatment system (7) is connected respectively with stirring system (4) and thermal desorption system (5).
A kind of restorative procedure that thermal desorption processing contaminated soil is realized using above device, it is specific as follows：
1) pretreatment stage：Soil to be repaired is transported in disposal site, is carried out sieving approach pretreatment, is less than soil particle diameter
30mm；
2) the medicament addition stage：The additive amount of medicament is controlled by metering device.And blender is used by medicament and soil
Abundant mixing.Added medicament percentage is 3-8% (soil weight in wet base meter), on the one hand adjusts soil moisture content, one side medicament
Releasable heat after addition promotes the volatilization of part volatile organic matter, saves subsequent processing；
3) thermal desorption is handled：Thermal desorption treatment temperature be 300-550 DEG C, handle 15-35min after, stop heating, material after
It is continuous to stop 5-15min；After treatment, will treated that soil sent by cold treatment is to be checked to area to be checked.
4) rotary kiln exhaust gas is handled：The exhaust gas that thermal desorption generates is after activated carbon adsorption removes, into embedded refractory material
In the oxidation Burning Room of thermal insulation layer.Indoor 1200 DEG C of high temperature of holding, and the tail gas containing pollutant is maintained to exist by ventilating system
It wherein stops more than 2 seconds, pollutant is broken down into the final products such as carbon dioxide, sulfur dioxide and water vapour, non-secondary pollution.
Example 1
Certain chemical plant organic polluted soil, benzo (a) anthracene content 438mglkg, after pretreatment soil particle diameter 20mm.
Quick lime 5% is added, thermal desorption controls mean temperature, and discharging soil reaches reparation desired value in 450 degrees Celsius of lower 20min
0.46mg/kg, removal rate is up to 99.9%.
Example 2
Shanghai place organic polluted soil, soil pollutant polycyclic aromatic hydrocarbon content be 21.42mg/kg, soil first into
Row pretreatment, grain size reach 30mm.Quick lime additive amount is 3%, fully after reaction, carries out thermal desorption processing.Thermal desorption processing
550 DEG C of 20min of mean temperature stop heating, and discharging soil, which reaches, repairs desired value 0.64mg/kg, and pollutants removal rate is up to
97%.
Claims (3)
1. a kind of prosthetic device of thermal desorption processing contaminated soil, it is characterised in that：The device includes stirring system（4）And burning
System（6）, pretreatment system（1）Pass through conveyer belt（2）With stirring system（4）It is connected, the stirring system（4）Pass through transmission
Band（2）With thermal desorption system（5）It is connected, the thermal desorption system（5）With combustion system（6）It is connected.
2. the prosthetic device of thermal desorption processing contaminated soil according to claim 1, it is characterised in that：Dosing storehouse（3）Position
In stirring system（4）Top.
3. the prosthetic device of thermal desorption processing contaminated soil according to claim 1, it is characterised in that：Exhaust treatment system
（7）Respectively with stirring system（4）And thermal desorption system（5）It is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721730375.9U CN207479185U (en) | 2017-12-13 | 2017-12-13 | A kind of prosthetic device of thermal desorption processing contaminated soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721730375.9U CN207479185U (en) | 2017-12-13 | 2017-12-13 | A kind of prosthetic device of thermal desorption processing contaminated soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207479185U true CN207479185U (en) | 2018-06-12 |
Family
ID=62458645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721730375.9U Expired - Fee Related CN207479185U (en) | 2017-12-13 | 2017-12-13 | A kind of prosthetic device of thermal desorption processing contaminated soil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207479185U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109731899A (en) * | 2019-01-29 | 2019-05-10 | 中一(福建)环境工程有限公司 | A kind of contaminated soil remediation method |
| CN110090857A (en) * | 2019-05-16 | 2019-08-06 | 中科鼎实环境工程有限公司 | Thermal desorption-solidification and stabilization one processing system |
-
2017
- 2017-12-13 CN CN201721730375.9U patent/CN207479185U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109731899A (en) * | 2019-01-29 | 2019-05-10 | 中一(福建)环境工程有限公司 | A kind of contaminated soil remediation method |
| CN110090857A (en) * | 2019-05-16 | 2019-08-06 | 中科鼎实环境工程有限公司 | Thermal desorption-solidification and stabilization one processing system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180612 |