CN206911934U - Polluted soil pyrolysis desorption prosthetic appliance - Google Patents
Polluted soil pyrolysis desorption prosthetic appliance Download PDFInfo
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- CN206911934U CN206911934U CN201720777146.6U CN201720777146U CN206911934U CN 206911934 U CN206911934 U CN 206911934U CN 201720777146 U CN201720777146 U CN 201720777146U CN 206911934 U CN206911934 U CN 206911934U
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- pyrolysis desorption
- pyrolysis
- polluted soil
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Abstract
It the utility model is related to a kind of polluted soil pyrolysis desorption prosthetic appliance.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 mouth, by flue formed with circulation loop 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 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
It is standby.
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 formed to biology and the mankind by food chain.Poisonous and hazardous pollutant can be with other things in soil after entering soil
Matter occur a series of absorption, displacement, reaction, with reference to etc. effect, these processes are most to be irreversible, therefore are formed after acting on
Insoluble compound in soil constantly accumulation and it is exceeded.Once soil is contaminated, with regard to extremely difficult recovery, by some heavy metals, more
PAH contaminated soil may need to recover for 100~200 years.Therefore, the soil polluted necessarily causes crops
The underproduction, also human health can be endangered 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 effective cleaning soil, but somewhat expensive is uncomfortable
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
Absorb, the hazardous contaminant in degraded, conversion and removal soil environment, 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 suitable
Close such method；Heat treating process is to be heat-treated contaminated soil in high temperature, but traditional heat treatment method be burn,
High-temperature gasification mode is directly used, this method high energy consumption, easily causes secondary pollution.
Chinese invention patent prospectus CN104607455A discloses a kind of organic polluted soil multistage thermal desorption and repaiied
Complex system.The system is this method high energy consumption by direct-fired using thermal desorption device, and easily produces and hang Jiao, and
Easily cause secondary pollution.
The content of the invention
The purpose of this utility model is overcome the deficiencies in the prior art, there is provided a kind of polluted soil pyrolysis desorption is repaired
Device 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, the technical solution of the utility model is as follows：
Polluted soil pyrolysis desorption prosthetic appliance, including pyrolysis desorption processing unit, gas-phase product processing unit, liquid phase
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
Be provided with soil induction system, polluted soil carries out pyrolysis desorption material bed, it is material bed be provided with heat supply vent one's spleen it is derived
Pyrolysis gas outlet；
The gas-phase product processing unit includes combustion chamber, fume dust remover, spray equipment, fume emission mouth, burning
By flue formed with circulation loop, gas phase production between room, the zone of heating of pyrolysis desorption stove, fume dust remover, spray equipment
Three-phase separating device is provided between thing processing unit and pyrolysis desorption processing unit, combustion chamber is used for burning fuel to produce height
Warm flue gas, combustion chamber, which is additionally operable to the combustion heat, vents one's spleen and is used for via the gas-phase product obtained after three-phase separating device, fume emission mouth
Flue gas of the part after spray equipment is discharged；
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 are 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.
The beneficial effects of the utility model have：
（1）Prior art typically handles contaminated soil using thermal desorption technology, and the application is using pyrolysis
Desorption technology, pyrolysis desorption have higher treatment temperature compared to thermal desorption, and poisonous and harmful substance is not only issued additional from soil, and
And pyrolytic reaction also occurs, pyrolysis gas is easier to realize innoxious by burning.
（2）Between combustion chamber, the pyrolysis desorption zone of heating of stove, fume dust remover, spray equipment by flue formed with
Circulation loop, if gas-phase product is not sufficiently burned for the first time, it 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 fully burning gas-phase product, it is possible the reason for be fuel combustion zone because burning produces larger pressure, gas phase is produced
It can be blown on the contrary when thing is introduced directly into fuel combustion zone at a distance, it is insufficient so as to cause to burn, and burn and insufficient easily lead
Cause to hang burnt phenomenon.
（4）Between combustion chamber, the pyrolysis desorption zone of heating of stove, fume dust remover, spray equipment by flue formed with
Circulation loop, the partial fume in waste heat recovery area is back to by flue gas ash removal, spray washing step, so this partial fume ratio
Purer, it can neutralize flue dust caused by fuel combustion zone, and this is also to be not easy the reason for hanging burnt phenomenon occur.
（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 plays to waste heat recovery area
With the effect of temperature, the high-temperature flue gas that fuel combustion zone comes out is set to be 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 produces.
（8）The application can separate the toxic organicses such as the polycyclic aromatic hydrocarbon in the soil polluted, heavy metal,
Soil after reparation can serve 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 flow chart of the present utility model；
Fig. 2 is floor plan of the present utility model；
Fig. 3 is the schematic diagram of the utility model combustion chamber.
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 mouth；6th, flue；7th, three phase separation fills
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 is pyrolyzed desorption prosthetic appliance, including pretreatment unit, pyrolysis desorption processing list
Member, gas-phase product processing unit, liquid product processing unit；
Pretreatment unit includes pretreatment unit 91, and contaminated soil isolates bulk first in pretreatment unit 91
Foreign matter, 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 set
Be equipped with soil induction system 11, polluted soil carries out pyrolysis desorption material bed, it is material bed be provided with heat supply vent one's spleen it is derived
Pyrolysis gas outlet 12, the soil after pyrolysis is desorbed discharge storage by cooling output device 13；
Gas-phase product processing unit includes combustion chamber 2, fume dust remover 3, spray equipment 4, fume emission mouth 5, burning
By flue 6 formed with circulation loop, cigarette between room 2, the zone of heating of pyrolysis desorption stove 1, fume dust remover 3, spray equipment 4
Gas dust arrester 3 is sack cleaner.Three phase separation is provided between gas-phase product processing unit and pyrolysis desorption processing unit
Device 7, combustion chamber 2 are used for burning fuel to produce high-temperature flue gas, and combustion chamber 2, which is additionally operable to the combustion heat, vents one's spleen and filled via three phase separation
The gas-phase product obtained after 7 is put, fume emission mouth 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 phase
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 are 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 positioned at heating exhanst gas outlet
26 top.
Polluted soil pyrolysis desorption restorative procedure is corresponding to the said equipment：
It is pyrolyzed desorption processing：Polluted soil is sent into pyrolysis desorption stove and carries out being pyrolyzed desorption and exports pyrolysis gas, it
The soil after processing is discharged afterwards；
Gas-phase product processing：Pyrolysis gas obtains gas-phase product after three phase separation, and gas-phase product imports combustion zone and fired
Burn, heat caused by burning aids in being used to be pyrolyzed desorption；High-temperature flue gas caused by combustion zone is carried out after being pyrolyzed desorption
Flue gas ash removal, spray washing, afterwards, partial fume discharge, partial fume is back to combustion zone；The partial fume of discharge reaches
《Discharge standard of air pollutants》（DB11/501-2016）Requirement；
Liquid product processing：Discharged after pyrolysis gas is obtained into liquid product processing after three phase separation, the liquid phase after processing
Product reaches 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 is sent into fuel combustion zone and produces high temperature cigarette by the partial fume after spray washing back to waste heat recovery area
Gas, high-temperature flue gas are 1000 DEG C or so, are carried out back to the partial fume in waste heat recovery area in waste heat recovery area and high-temperature flue gas
Mix and the heating flue gas for being suitable to pyrolysis desorption formed after temperature adjustment, 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 (5)
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 carries out pyrolysis desorption material bed, material bed to be provided with heat supply and vent one's spleen derived pyrolysis
Gas exports；
The gas-phase product processing unit includes combustion chamber, fume dust remover, spray equipment, fume emission mouth, combustion chamber, heat
Solution is desorbed between the zone of heating, fume dust remover, spray equipment of stove by flue formed with circulation loop, gas-phase product processing
Three-phase separating device is provided between unit and pyrolysis desorption processing unit, combustion chamber is used for burning fuel to produce high temperature cigarette
Gas, combustion chamber are 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 mouth is used for portion
The flue gas discharge that lease making is crossed 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720777146.6U CN206911934U (en) | 2017-06-30 | 2017-06-30 | Polluted soil pyrolysis desorption prosthetic appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720777146.6U CN206911934U (en) | 2017-06-30 | 2017-06-30 | Polluted soil pyrolysis desorption prosthetic appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206911934U true CN206911934U (en) | 2018-01-23 |
Family
ID=61334773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720777146.6U Active CN206911934U (en) | 2017-06-30 | 2017-06-30 | Polluted soil pyrolysis desorption prosthetic appliance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206911934U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107096790A (en) * | 2017-06-30 | 2017-08-29 | 浙江宜可欧环保科技有限公司 | Polluted soil pyrolysis desorption prosthetic appliance and 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 |
| CN111558611A (en) * | 2020-04-10 | 2020-08-21 | 河南科技大学 | Negative pressure thermal desorption treatment system for mercury contaminated soil |
-
2017
- 2017-06-30 CN CN201720777146.6U patent/CN206911934U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107096790A (en) * | 2017-06-30 | 2017-08-29 | 浙江宜可欧环保科技有限公司 | Polluted soil pyrolysis desorption prosthetic appliance and 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 |
| CN111558611A (en) * | 2020-04-10 | 2020-08-21 | 河南科技大学 | Negative pressure thermal desorption treatment system for mercury contaminated soil |
| CN111558611B (en) * | 2020-04-10 | 2021-10-26 | 河南科技大学 | Negative pressure thermal desorption treatment system for mercury contaminated soil |
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