CN107096790A - Polluted soil pyrolysis desorption prosthetic appliance and method - Google Patents
Polluted soil pyrolysis desorption prosthetic appliance and method Download PDFInfo
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- CN107096790A CN107096790A CN201710519366.3A CN201710519366A CN107096790A CN 107096790 A CN107096790 A CN 107096790A CN 201710519366 A CN201710519366 A CN 201710519366A CN 107096790 A CN107096790 A CN 107096790A
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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
- B09C1/065—Reclamation of contaminated soil thermally by pyrolysis
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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
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- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to a kind of polluted soil pyrolysis desorption prosthetic appliance and method.Polluted soil pyrolysis desorption prosthetic appliance includes pyrolysis desorption processing unit, gas-phase product processing unit, liquid product processing unit；Pyrolysis desorption processing unit is pyrolysis desorption stove；Gas-phase product processing unit includes combustion chamber, fume dust remover, spray equipment, fume emission mouthful, and circulation loop is formed with by flue between combustion chamber, the zone of heating of pyrolysis desorption stove, fume dust remover, spray equipment；Liquid product processing unit is used to handle pyrolysis gas via the gas-phase product obtained after three-phase separating device.The high treating effect of polluted soil pyrolysis desorption prosthetic appliance and method, and it is not easy to hang it is burnt, do not produce secondary pollution.
Description
Technical field
The invention belongs to the technical field of regeneration of contaminated soil, more particularly to a kind of polluted soil pyrolysis desorption reparation is set
Standby and method.
Background technology
Contaminated soil refers into the quantity and speed of the hazardous contaminant of soil exceed by number of ways
The carrying capacity and purification speed of soil, cause physics, chemistry and biology property, composition and character of soil etc. to become
Change, destroy the natural dynamic equilibrium of soil, so as to cause soil natural functional disturbance, soil quality deterioration, the growth of crop
Development is affected, the yield of product and Quality Down, produces certain environmental effect (secondary pollution occurs for water body or air),
And harm can be constituted to the biological and mankind by food chain.Poisonous and hazardous pollutant enters after soil can be with other things in soil
Matter occur a series of absorption, displacement, reaction, with reference to etc. effect, these processes majorities formed after effect to be irreversible
Insoluble compound in soil constantly accumulation and it is exceeded.Once soil is contaminated, just extremely difficult to recover, by some heavy metals, many
PAH contaminated soil may need to recover for 100~200 years.Therefore, the soil polluted necessarily causes crops
The underproduction, can also endanger human health by the accumulation of food chain.
At present, the main method of polluted soil reparation has：Physical restoration, chemical restoration, biological restoration and heat
Facture.Contaminated soil is repaired using physical restoration, method is simple, can effectively cleaning soil, but somewhat expensive, discomfort
In large-area applications；Chemical restoration is to eliminate the compound of difficult degradation in polluted soil, neutralize removing, but easily
Cause secondary pollution；It is biological prosthetic to refer under certain conditions, utilize the various microorganisms in soil, plant and other biologies
The hazardous contaminant in soil environment is absorbed, degraded, converted and removed, the concentration of pollutant is reduced to acceptable water
It is flat, or nontoxic material is translated into, but processing procedure is quite very long, while not all contaminated soil is all fitted
Close such method；Heat treating process is to be heat-treated contaminated soil in high temperature, but traditional heat treatment method be burn,
Directly use high-temperature gasification mode, this method high energy consumption, easily cause secondary pollution.
Chinese invention patent prospectus CN104607455A discloses a kind of multistage thermal desorption of organic polluted soil and repaiied
Complex system.The system is that generation hangs burnt by direct-fired, this method high energy consumption, and easily using thermal desorption device, and
Easily cause secondary pollution.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of polluted soil pyrolysis desorption prosthetic appliance
And method, the high treating effect of the device and method, and it is not easy to hang it is burnt, do not produce secondary pollution.
To achieve these goals, technical scheme is as follows：
Polluted soil pyrolysis desorption prosthetic appliance, including pyrolysis desorption processing unit, gas-phase product processing unit, liquid product
Processing unit；
The pyrolysis desorption processing unit is pyrolysis desorption stove, and pyrolysis desorption stove includes material bed and zone of heating, material bed setting
There is a soil induction system, polluted soil is material bed to be provided with heat supply and vent one's spleen derived pyrolysis in material bed progress pyrolysis desorption
Gas is exported；
The gas-phase product processing unit includes combustion chamber, fume dust remover, spray equipment, fume emission mouthful, combustion chamber, heat
Solution is desorbed between the zone of heating of stove, fume dust remover, spray equipment is formed with circulation loop, gas-phase product processing by flue
Three-phase separating device is provided between unit and pyrolysis desorption processing unit, combustion chamber is used to burning fuel produce high temperature cigarette
Gas, combustion chamber is additionally operable to the combustion heat and vented one's spleen via the gas-phase product obtained after three-phase separating device, and fume emission mouthful is used for portion
Lease making crosses the discharge of the flue gas after spray equipment；
The liquid product processing unit is used to handle pyrolysis gas via the gas-phase product obtained after three-phase separating device.
As an improvement, the combustion chamber is divided into fuel combustion zone, energy recovery area, waste heat recovery area, energy recovery
Area is disposed with gas-phase product import, and gas-phase product import is used to input pyrolysis gas via the gas phase production obtained after three-phase separating device
Thing, waste heat recovery area is disposed with back-mixing gas approach, back-mixing gas approach be used for by by the flue gas back-mixing of spray equipment to remaining
Heat recovery area.
As an improvement, the combustion chamber has heating exhanst gas outlet, heating exhanst gas outlet is located at waste heat recovery area.
As an improvement, the fume dust remover is sack cleaner.
As an improvement, the liquid product processing unit includes water treatment facilities, chilled water unit, depth-averaged model dress
Put.
Present invention also offers a kind of polluted soil pyrolysis desorption restorative procedure, including
It is pyrolyzed desorption processing：Pyrolysis desorption will be carried out in polluted soil feeding pyrolysis desorption stove and export pyrolysis gas, afterwards will
Soil discharge after processing；
Gas-phase product processing：Pyrolysis gas obtains gas-phase product after three phase separation, and gas-phase product imports combustion zone and burnt, fired
The heat produced is burnt to aid in being used to be pyrolyzed desorption；The high-temperature flue gas that combustion zone is produced carries out flue gas after pyrolysis desorption and removed
Dirt, spray washing, afterwards, partial fume discharge, partial fume is back to combustion zone；
Liquid product processing：Discharged after pyrolysis gas is obtained into liquid product processing after three phase separation.
As an improvement, the combustion zone is divided into fuel combustion zone, energy recovery area, waste heat recovery area, gas-phase product
Import energy recovery area to be burnt, the partial fume after spray washing is back to waste heat recovery area, by fuel feeding fuel combustion
Burn area and produce high-temperature flue gas, carry out mixing temperature adjustment with high-temperature flue gas in waste heat recovery area back to the partial fume in waste heat recovery area
The heating flue gas for being suitable to pyrolysis desorption is formed afterwards.
As a further improvement, the heating flue gas is 500 ~ 700 DEG C via temperature during pyrolysis desorption processing.
Beneficial effects of the present invention have：
（1）Prior art typically handles contaminated soil using thermal desorption technology, and the application uses pyrolysis desorption
Technology, pyrolysis desorption has higher treatment temperature compared to thermal desorption, and poisonous and harmful substance is not only issued additional from soil, but also
Generation pyrolytic reaction, pyrolysis gas is easier to realize innoxious by burning.
（2）It is formed between combustion chamber, the zone of heating of pyrolysis desorption stove, fume dust remover, spray equipment by flue
Circulation loop, if gas-phase product is not sufficiently burned for the first time, can also be recycled to combustion chamber and be burnt again, this is this Shen
Please treatment effect a reason.
（3）Combustion chamber is divided into fuel combustion zone, energy recovery area, waste heat recovery area, is found through experiment, energy recovery
Area is easier the gas-phase product that fully burns, and is that fuel combustion zone produces larger pressure, gas phase production due to burning the reason for possible
Thing can be blown at a distance on the contrary when being introduced directly into fuel combustion zone, so as to cause burning insufficient, and burnt and insufficient easily led
Cause to hang burnt phenomenon.
（4）It is formed between combustion chamber, the zone of heating of pyrolysis desorption stove, fume dust remover, spray equipment by flue
Circulation loop, the partial fume for being back to waste heat recovery area passes through flue gas ash removal, spray washing step, so this partial fume ratio
Purer, it can neutralize the flue dust of fuel combustion zone generation, and this is also the reason for being not easy to occur hanging burnt phenomenon.
（5）The temperature of fuel combustion zone is pyrolyzed the operating temperature of desorption processing unit 500 ~ 700 at 1000 DEG C or so
DEG C, it is relatively low to be back to the partial fume in the waste heat recovery area temperature after spray washing, during its back-mixing is played to waste heat recovery area
With the effect of temperature, the high-temperature flue gas for enabling fuel combustion zone to come out is rapidly decreased to 500 ~ 700 DEG C.
（6）Pyrolysis desorption stove pyrolysis gas is imported into burning again, the usage amount of combustion gas is reduced, has saved the energy.
（7）In the application, gas-phase product and liquid product have obtained effective processing, and non-secondary pollution is produced.
（8）The application can separate the toxic organicses such as the polycyclic aromatic hydrocarbon in the soil polluted, heavy metal,
Soil after reparation can be served and normal soil identical effect to brickmaking, the solid slag for the purposes such as pave the way.
（9）The application is not limited only to the reparation of soil after pollution, can also be applied to chemical engineering sludge, municipal sludge etc. other
Fixed-end forces.
Brief description of the drawings
Fig. 1 is the flow chart of invention；
Fig. 2 is floor plan of the invention；
Fig. 3 is the schematic diagram of combustion chamber of the present invention.
In figure：1st, pyrolysis desorption stove；11st, soil induction system；12nd, pyrolysis gas outlet；13rd, output device is cooled down；2nd, fire
Burn room；21st, fuel combustion zone；22nd, energy recovery area；23rd, waste heat recovery area；24th, gas-phase product import；25th, back-mixing flue gas enters
Mouthful；26th, exhanst gas outlet is heated；3rd, fume dust remover；4th, spray equipment；5th, fume emission mouthful；6th, flue；7th, three phase separation is filled
Put；81st, water treatment facilities；82nd, chilled water unit；83rd, deep water treatment device；91st, pretreatment unit；92nd, transfer feed bin.
Embodiment
Embodiment 1
As shown in Fig. 1~2, polluted soil pyrolysis desorption prosthetic appliance, including pretreatment unit, pyrolysis desorption processing unit,
Gas-phase product processing unit, liquid product processing unit；
Pretreatment unit includes pretreatment unit 91, and it is different that contaminated soil isolates bulk first in pretreatment unit 91
Thing, then enter pyrolysis desorption processing unit via transfer feed bin 92；
Pyrolysis desorption processing unit is pyrolysis desorption stove 1, and pyrolysis desorption stove 1 includes material bed and zone of heating, material bed to be provided with
Soil induction system 11, polluted soil is material bed to be provided with heat supply and vent one's spleen derived pyrolysis in material bed progress pyrolysis desorption
Gas outlet 12, the soil after pyrolysis desorption discharges storage by cooling output device 13；
Gas-phase product processing unit includes combustion chamber 2, fume dust remover 3, spray equipment 4, fume emission mouthfuls 5, combustion chamber 2,
Pyrolysis is desorbed between the zone of heating of stove 1, fume dust remover 3, spray equipment 4 and is formed with circulation loop by flue 6, and flue gas is removed
Dirt device 3 is sack cleaner.Three-phase separating device is provided between gas-phase product processing unit and pyrolysis desorption processing unit
7, combustion chamber 2 is used for burning fuel to produce high-temperature flue gas, and combustion chamber 2 is additionally operable to the combustion heat and vented one's spleen via three-phase separating device 7
The gas-phase product obtained afterwards, fume emission mouthful 5 is used to discharge flue gas of the part after spray equipment 4；
Liquid product processing unit is used to handle pyrolysis gas via the gas-phase product obtained after three-phase separating device 7.Liquid product
Processing unit includes water treatment facilities 81, chilled water unit 82, deep water treatment device 83.
As shown in figure 3, combustion chamber 2 is divided into fuel combustion zone 21, energy recovery area 22, waste heat recovery area 23, fuel
Isolated but communicated with each other by dividing plate between combustion zone 21, energy recovery area 22, waste heat recovery area 23.Energy recovery area 22 is disposed with
Gas-phase product import 24, gas-phase product import 24 is used to input pyrolysis gas via the gas-phase product obtained after three-phase separating device 7,
Waste heat recovery area 23 is disposed with back-mixing gas approach 25, and back-mixing gas approach 25 is used for by the flue gas back-mixing of spray equipment 4
To waste heat recovery area 23.Waste heat recovery area 23 is provided with heating exhanst gas outlet 26, and back-mixing gas approach 25 is located at heating exhanst gas outlet
26 top.
The corresponding polluted soil pyrolysis of the said equipment is desorbed restorative procedure and is：
It is pyrolyzed desorption processing：Pyrolysis desorption will be carried out in polluted soil feeding pyrolysis desorption stove and export pyrolysis gas, afterwards will
Soil discharge after processing；
Gas-phase product processing：Pyrolysis gas obtains gas-phase product after three phase separation, and gas-phase product imports combustion zone and burnt, fired
The heat produced is burnt to aid in being used to be pyrolyzed desorption；The high-temperature flue gas that combustion zone is produced carries out flue gas after pyrolysis desorption and removed
Dirt, spray washing, afterwards, partial fume discharge, partial fume is back to combustion zone；The partial fume of discharge reaches《Air is dirty
Contaminate thing comprehensive discharge standard》（DB11/501-2016）Requirement；
Liquid product processing：Discharged after pyrolysis gas is obtained into liquid product processing after three phase separation, the liquid product after processing
Reach national sewage comprehensive emission standard GB8978-1996.
Combustion zone is divided into fuel combustion zone, energy recovery area, waste heat recovery area, and gas-phase product imports energy recovery area
Burnt, fuel feeding fuel combustion zone is produced high temperature cigarette by the partial fume after spray washing back to waste heat recovery area
Gas, high-temperature flue gas is 1000 DEG C or so, is carried out back to the partial fume in waste heat recovery area in waste heat recovery area and high-temperature flue gas
Mix the heating flue gas for being formed after temperature adjustment and being suitable to pyrolysis desorption, heating flue gas via temperature during pyrolysis desorption processing for 500 ~
700 DEG C, 100 ~ 300 DEG C are reduced to via the temperature after pyrolysis desorption processing.
Claims (8)
1. polluted soil pyrolysis desorption prosthetic appliance, it is characterised in that：Including pyrolysis desorption processing unit, gas-phase product processing
Unit, liquid product processing unit；
The pyrolysis desorption processing unit is pyrolysis desorption stove, and pyrolysis desorption stove includes material bed and zone of heating, material bed setting
There is a soil induction system, polluted soil is material bed to be provided with heat supply and vent one's spleen derived pyrolysis in material bed progress pyrolysis desorption
Gas is exported；
The gas-phase product processing unit includes combustion chamber, fume dust remover, spray equipment, fume emission mouthful, combustion chamber, heat
Solution is desorbed between the zone of heating of stove, fume dust remover, spray equipment is formed with circulation loop, gas-phase product processing by flue
Three-phase separating device is provided between unit and pyrolysis desorption processing unit, combustion chamber is used to burning fuel produce high temperature cigarette
Gas, combustion chamber is additionally operable to the combustion heat and vented one's spleen via the gas-phase product obtained after three-phase separating device, and fume emission mouthful is used for portion
Lease making crosses the discharge of the flue gas after spray equipment；
The liquid product processing unit is used to handle pyrolysis gas via the gas-phase product obtained after three-phase separating device.
2. polluted soil pyrolysis desorption prosthetic appliance according to claim 1, it is characterised in that：The combustion chamber is successively
It is divided into fuel combustion zone, energy recovery area, waste heat recovery area, energy recovery area is disposed with gas-phase product import, and gas-phase product enters
Mouth is used to input pyrolysis gas via the gas-phase product obtained after three-phase separating device, and waste heat recovery area is disposed with back-mixing flue gas and entered
Mouthful, back-mixing gas approach is used for by the flue gas back-mixing of spray equipment to waste heat recovery area.
3. polluted soil pyrolysis desorption prosthetic appliance according to claim 2, it is characterised in that：The combustion chamber has
Exhanst gas outlet is heated, heating exhanst gas outlet is located at waste heat recovery area.
4. polluted soil pyrolysis desorption prosthetic appliance according to claim 1, it is characterised in that：The flue gas ash removal dress
It is set to sack cleaner.
5. polluted soil pyrolysis desorption prosthetic appliance according to claim 1, it is characterised in that：At the liquid product
Managing unit includes water treatment facilities, chilled water unit, deep water treatment device.
6. polluted soil pyrolysis desorption restorative procedure, it is characterised in that：Including
It is pyrolyzed desorption processing：Pyrolysis desorption will be carried out in polluted soil feeding pyrolysis desorption stove and export pyrolysis gas, afterwards will
Soil discharge after processing；
Gas-phase product processing：Pyrolysis gas obtains gas-phase product after three phase separation, and gas-phase product imports combustion zone and burnt, fired
The heat produced is burnt to aid in being used to be pyrolyzed desorption；The high-temperature flue gas that combustion zone is produced carries out flue gas after pyrolysis desorption and removed
Dirt, spray washing, afterwards, partial fume discharge, partial fume is back to combustion zone；
Liquid product processing：Discharged after pyrolysis gas is obtained into liquid product processing after three phase separation.
7. polluted soil pyrolysis desorption restorative procedure according to claim 6, it is characterised in that：The combustion zone is successively
It is divided into fuel combustion zone, energy recovery area, waste heat recovery area, gas-phase product imports energy recovery area and burnt, spray washing
Fuel feeding fuel combustion zone is produced high-temperature flue gas, back to waste heat recovery by partial fume afterwards back to waste heat recovery area
The partial fume in area carries out mixing the heating flue gas for being formed after temperature adjustment and being suitable to pyrolysis desorption in waste heat recovery area with high-temperature flue gas.
8. polluted soil pyrolysis desorption restorative procedure according to claim 7, it is characterised in that：The heating flue gas warp
Temperature when being handled by pyrolysis desorption is 500 ~ 700 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710519366.3A CN107096790A (en) | 2017-06-30 | 2017-06-30 | Polluted soil pyrolysis desorption prosthetic appliance and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710519366.3A CN107096790A (en) | 2017-06-30 | 2017-06-30 | Polluted soil pyrolysis desorption prosthetic appliance and method |
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| Publication Number | Publication Date |
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| CN107096790A true CN107096790A (en) | 2017-08-29 |
Family
ID=59663324
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| CN201710519366.3A Pending CN107096790A (en) | 2017-06-30 | 2017-06-30 | Polluted soil pyrolysis desorption prosthetic appliance and method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108147645A (en) * | 2018-02-13 | 2018-06-12 | 浙江宜可欧环保科技有限公司 | Chemical engineering sludge processing method and processing device |
| CN108714621A (en) * | 2018-05-23 | 2018-10-30 | 昆明理工大学 | A kind of thermal desorption handles the method and system of organic polluted soil and desorption exhaust-gas treatment |
| CN108817058A (en) * | 2018-07-05 | 2018-11-16 | 上海艾库环境工程有限公司 | A kind of soil remediation method |
| CN109719125A (en) * | 2019-01-24 | 2019-05-07 | 杰瑞环保科技有限公司 | Thermal desorption device and its control method |
| CN110369477A (en) * | 2019-08-30 | 2019-10-25 | 浙江宜可欧环保科技有限公司 | Soil pyrolysis treating method and equipment based on directly pyrolysis desorption |
| CN110560472A (en) * | 2019-07-15 | 2019-12-13 | 浙江宜可欧环保科技有限公司 | Method and equipment for soil pyrolysis treatment |
| CN112174471A (en) * | 2020-10-30 | 2021-01-05 | 芜湖海创实业有限责任公司 | Pyrolysis desorption treatment system and method for oily sludge |
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| CN204276512U (en) * | 2014-12-10 | 2015-04-22 | 北京建工环境修复股份有限公司 | A kind of skid-mounted type Soil Thermal separation equipment |
| CN206911934U (en) * | 2017-06-30 | 2018-01-23 | 浙江宜可欧环保科技有限公司 | Polluted soil pyrolysis desorption prosthetic appliance |
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| KR20090033860A (en) * | 2009-03-17 | 2009-04-06 | 현대건설주식회사 | Thermal desorption system for remediation of polluted soil and the method using the same |
| CN204276512U (en) * | 2014-12-10 | 2015-04-22 | 北京建工环境修复股份有限公司 | A kind of skid-mounted type Soil Thermal separation equipment |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108147645A (en) * | 2018-02-13 | 2018-06-12 | 浙江宜可欧环保科技有限公司 | Chemical engineering sludge processing method and processing device |
| CN108714621A (en) * | 2018-05-23 | 2018-10-30 | 昆明理工大学 | A kind of thermal desorption handles the method and system of organic polluted soil and desorption exhaust-gas treatment |
| CN108817058A (en) * | 2018-07-05 | 2018-11-16 | 上海艾库环境工程有限公司 | A kind of soil remediation method |
| CN109719125A (en) * | 2019-01-24 | 2019-05-07 | 杰瑞环保科技有限公司 | Thermal desorption device and its control method |
| CN110560472A (en) * | 2019-07-15 | 2019-12-13 | 浙江宜可欧环保科技有限公司 | Method and equipment for soil pyrolysis treatment |
| CN110369477A (en) * | 2019-08-30 | 2019-10-25 | 浙江宜可欧环保科技有限公司 | Soil pyrolysis treating method and equipment based on directly pyrolysis desorption |
| CN112174471A (en) * | 2020-10-30 | 2021-01-05 | 芜湖海创实业有限责任公司 | Pyrolysis desorption treatment system and method for oily sludge |
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