CN207479184U - A kind of thermal desorption device of contaminated soil - Google Patents
A kind of thermal desorption device of contaminated soil Download PDFInfo
- Publication number
- CN207479184U CN207479184U CN201721729834.1U CN201721729834U CN207479184U CN 207479184 U CN207479184 U CN 207479184U CN 201721729834 U CN201721729834 U CN 201721729834U CN 207479184 U CN207479184 U CN 207479184U
- Authority
- CN
- China
- Prior art keywords
- soil
- thermal desorption
- flue gas
- gas
- combustion chamber
- 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
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- 238000003795 desorption Methods 0.000 title claims abstract description 41
- 239000002689 soil Substances 0.000 title claims abstract description 40
- 238000001035 drying Methods 0.000 claims abstract description 19
- 238000002485 combustion reaction Methods 0.000 claims abstract description 15
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 18
- 239000003546 flue gas Substances 0.000 abstract description 18
- 239000007789 gas Substances 0.000 abstract description 16
- 238000004140 cleaning Methods 0.000 abstract description 4
- 230000010354 integration Effects 0.000 abstract description 3
- 238000005067 remediation Methods 0.000 abstract description 3
- 230000009977 dual effect Effects 0.000 abstract description 2
- 238000010304 firing Methods 0.000 abstract description 2
- 238000000746 purification Methods 0.000 abstract description 2
- 230000000505 pernicious effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 239000000779 smoke Substances 0.000 description 4
- 238000004064 recycling Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
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- Processing Of Solid Wastes (AREA)
Abstract
The utility model discloses a kind of thermal desorption devices of contaminated soil, belong to technical field of soil remediation.First with partial detachment flue gas recirculation, return to that combustion chamber is combustion-supporting and high temperature incineration, integration realizes that tail gas heat quantity recycles and flue gas harmless treatment, flow is optimized, eliminates dual firing chamber and heat exchanger, while energy saving, reduce equipment investment and place occupies.Secondly, using after remaining partial detachment flue gas air distribution temperature adjustment be used for drying and preheating soil, pernicious gas in flue gas is condensed and is adsorbed in the drying process by low temperature soil to obtain preliminary purification, reduces the risk that the load of gas cleaning and flue gas purifying equipment block.
Description
Technical field
The utility model is related to technical field of soil remediation, more particularly to a kind of thermal desorption device of contaminated soil.
Background technology
Largely left place soil is especially high there are serious pollution problem after the resettlement of chemical industry, oil play
Concentration organic contamination place has the characteristics that pollution condition is complicated, area is big, repairing and treating is difficult.The World Bank is sent out for 2010
Cloth《The As-Is analysis of the reparation and redevelopment of Chinese contaminated site》Report display, industrial enterprise moves to be had in the place left
Nearly 1/5 there are more serious pollutions.Chinese Ministry of Environmental Protection and 2005-2013 years national soil pollution situation tune of Ministry of Land and Resources's publication
Bulletin is looked into, is as a result shown in Industrial-Enterprises in China land used, has the soil higher than 30% to be contaminated.Process is utilized in redevelopment
In, the organic pollution in soil can directly affect the health of the mankind.Therefore, it is necessary to contaminated soil is properly located
It puts, ensures the safety of the mankind and environment.
Soil thermal desorption technology is a kind of effective means of renovation of organic pollution soil, mainly by directly or indirectly adding
Organic pollution in soil is heated to sufficiently high temperature by heat, it is made to be detached from soil.Soil thermal desorption needs to consume
A large amount of heat, the exhaust gas after desorption, which is also required to special cleaning equipment, which carries out harmless treatment, to discharge.So Soil Thermal
Desorption method often there are equipment it is more, high energy consumption, take up a large area, operating cost is high the problems such as.
Utility model content
The utility model provides a kind of thermal desorption using soil from the Polluted Soil for adsorbing purifying smoke and flue gas recirculation
Device by flue gas recirculation, realizes thermal desorption process fume afterheat recycling, improves the utilization rate of thermal energy；Utilize soil
Earth reduces exhaust-gas treatment difficulty from adsorbing purifying smoke, reduces the load of gas cleaning and flue gas purifying equipment blocks
Risk greatly reduces rehabilitation cost.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of thermal desorption device of Polluted Soil, the device include drying drum, thermal desorption rotating cylinder and combustion chamber, and described is dry
Dry rotating cylinder is connected by thermal desorption rotating cylinder with combustion chamber.
In some preferred technical solutions：Feed inlet is located at the top of drying drum.
It is total in some preferred technical solutions：Thermal desorption rotating cylinder gas vent is divided into two branches, and a branch is with doing
Dry rotating cylinder is connected, another is connected with combustion chamber.
The utility model provides a kind of thermal desorption device of contaminated soil, including：Drying system, for pending soil
Earth is preheated；Thermal desorption system, for the separated from contaminants in the soil after preheating to be come out；Flue gas recirculation system, profit
Flue gas is detached with pump, a part enters combustion system harmless treatment, and entering drying system after part cooling preheats
Soil, and soil is utilized from suction-operated purifying smoke；Combustion system carries out nothing using high-temp combustion to the flue gas that desorption obtains
Evilization processing, generated high-temperature gas, which enters thermal desorption system, makes separated from contaminants, and tail gas heat quantity recycling profit is realized in integration
With with flue gas harmless treatment；Exhaust treatment system discharges after up to standard to the useless processing gas after soil preliminary purification.
Wherein, drying system temperature is 100-200 DEG C；
Wherein, 400-650 DEG C of thermal desorption system temperature；
Wherein, the flue gas after thermal desorption adjusts exhaust gas volumn by pump, into the recycling stage；
Wherein, chamber temperature is 800-100 DEG C；
Wherein, some residual flue gas need to be by entering drying system after air cooling-down.
The beneficial effects of the utility model：
The beneficial effects of the utility model：Soil is preheated the heat generated using thermal desorption flue gas and thermal desorption,
Significantly improve the comprehensive utilization ratio of system thermal energy；
Thermal desorption system is carried out after soil is preheated, the residence time of thermal desorption process soil is shortened, significantly reduces heat
Repair time is desorbed, can be shortened the construction period in engineer application；
Using soil from suction-operated purifying smoke, reduce exhaust-gas treatment difficulty, reduce gas cleaning load and
The risk that flue gas purifying equipment blocks.
Integration realize tail gas heat quantity recycle and flue gas harmless treatment, optimize flow, eliminate dual firing chamber and
Heat exchanger while energy saving, reduce equipment investment and place occupies.
Tthe utility model system is rational in infrastructure, non-secondary pollution, and remediation efficiency is high, has broad application prospects and market
Prospect.
Description of the drawings
Fig. 1 is the schematic diagram of the utility model device.
1 is drying drum, and 2 be thermal desorption rotating cylinder, 3 combustion chambers.
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 thermal desorption device of Polluted Soil, the device include drying drum (1), thermal desorption rotating cylinder (2) and combustion chamber
(3), the drying drum (1) is connected by thermal desorption rotating cylinder (2) with combustion chamber (3).Feed inlet is located at drying drum (1)
Top.Thermal desorption rotating cylinder (2) gas vent is divided into two branches, and a branch is connected with drying drum (1), another and burning
Room (3) is connected.
Embodiment 1
The screened pending soil for being crushed to 15mm grain sizes enters drying oven, 100-200 DEG C of preheating by feed inlet；It will be native
Earth transports to thermal desorption system the parsing removal for carrying out organic pollution, and Thermal desorption furnace temperature is 400-650 DEG C；Thermal desorption system
The flue gas of generation is pumped by adjusting, and a part enters combustion chamber and burns.A part enters drying oven and preheats soil；Gas fume of combustion chamber
The heat that burning generates is delivered to thermal desorption stove, and heat is provided for thermal desorption process；It is discharged after soil treatment by discharge port.
Using the thermal desorption restorative procedure of the utility model, data are as follows before and after the processing for Shanghai contaminated sites object：
Treated, and soil reaches reparation desired value, and pollutants removal rate is up to 99%.
Claims (3)
1. a kind of thermal desorption device of Polluted Soil, it is characterised in that：The device include drying drum (1), thermal desorption rotating cylinder (2) and
Combustion chamber (3), the drying drum (1) are connected by thermal desorption rotating cylinder (2) with combustion chamber (3).
2. the thermal desorption device of Polluted Soil according to claim 1, it is characterised in that：Feed inlet is located at drying drum (1)
Top.
3. the thermal desorption device of Polluted Soil according to claim 1, it is characterised in that：Thermal desorption rotating cylinder (2) gas vent
It is divided into two branches, a branch is connected with drying drum (1), another is connected with combustion chamber (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721729834.1U CN207479184U (en) | 2017-12-13 | 2017-12-13 | A kind of thermal desorption device of contaminated soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721729834.1U CN207479184U (en) | 2017-12-13 | 2017-12-13 | A kind of thermal desorption device of contaminated soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207479184U true CN207479184U (en) | 2018-06-12 |
Family
ID=62458078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721729834.1U Expired - Fee Related CN207479184U (en) | 2017-12-13 | 2017-12-13 | A kind of thermal desorption device of contaminated soil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207479184U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109078975A (en) * | 2018-07-16 | 2018-12-25 | 北京建工环境修复股份有限公司 | A kind of contaminated soil is classified indirect thermal desorption coupling and catalyzing degradation repair system and method |
| CN112645563A (en) * | 2020-12-25 | 2021-04-13 | 苏州精英环保有限公司 | Combined type ex-situ thermal desorption treatment system for oil sludge |
-
2017
- 2017-12-13 CN CN201721729834.1U patent/CN207479184U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109078975A (en) * | 2018-07-16 | 2018-12-25 | 北京建工环境修复股份有限公司 | A kind of contaminated soil is classified indirect thermal desorption coupling and catalyzing degradation repair system and method |
| CN112645563A (en) * | 2020-12-25 | 2021-04-13 | 苏州精英环保有限公司 | Combined type ex-situ thermal desorption treatment system for oil sludge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |