CN206747261U - A kind of Thermal desorption repair system of organic material contaminated soil - Google Patents
A kind of Thermal desorption repair system of organic material contaminated soil Download PDFInfo
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- CN206747261U CN206747261U CN201720494707.1U CN201720494707U CN206747261U CN 206747261 U CN206747261 U CN 206747261U CN 201720494707 U CN201720494707 U CN 201720494707U CN 206747261 U CN206747261 U CN 206747261U
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- thermal desorption
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Abstract
The utility model discloses a kind of Thermal desorption repair system of organic material contaminated soil, including：Pretreatment module, for being pre-processed to treating material；Metering feeding module, Thermal desorption processing module is given for measure simultaneously uniform transmission by pretreated material；Thermal desorption processing module, for carrying out Thermal desorption to the material from the metering feeding module, and export pyrolysis vapour caused by Thermal desorption and go back original soil；Vapour processing module is pyrolyzed, for the pyrolysis vapour to be cooled down and separated；And reduction soil resource module, for handling the original soil of going back.The utility model quickly, effectively, continuously to organic material contaminated soil can carry out harmless treatment, handling process can be realized by skid unit, Automated condtrol, processing procedure does not produce secondary pollution, oil recovery, fixed gas, the recycling for going back original soil can be realized simultaneously, preferable environment, economic and social benefit can be produced.
Description
Technical field
The utility model belongs to the oil sludge and other Organic Pollutions in the fields such as exploitation of oil-gas field, petrochemical industry, pharmacy
The useless environment protection treating field of soil etc. solid (danger), is related to a kind of repair system of organic material contaminated soil, and in particular to Yi Zhongtong
Overheat the system that analytic technique carries out innoxious reparation to organic material contaminated soil.
Background technology
Organic material contaminated soil be generally crude oil pipeline thorn leakage contaminated soil, ground sludge, tank bottom oil sludge, drilling mud and
Landwaste (crude oil, diesel oil, white oil pollution), soil polluted by organic chloride, benzene homologues and derivative (such as benzo (a) pyrene) contaminated soil
Deng.It is big in the storage of China's pollutant at present, while also have larger new increment every year.The direct discharge of these pollutions can make
Spread into pollutant, cause large area soil, underground water and atmosphere pollution, prestige further will be caused to the life and health of animals and plants
The side of body.
Mainly there is burning method, biological treatment, chemical washing method, molten currently for the restorative procedure of organic material contaminated soil
Agent extraction etc..Burning method processing organic material contaminated soil unavoidably produces substantial amounts of air pollution, is produced in processing procedure
Secondary pollution, processing are more complicated；The treatment effect of biological treatment is more by time and naturally limitation, long processing period and
Influenceed greatly by Environmental variations, some organic matters can not degrade well under field conditions (factors)；Chemical washing method, solvent extraction
Method can preferably be repaired to organic material contaminated soil, while can also realize that the resource reclaim of organic pollution recycles, but
It is not thorough enough to the elimination effect of the organic pollution in soil.
Utility model content
In view of the above-mentioned problems, the purpose of this utility model is the Thermal desorption reparation system for developing a kind of organic material contaminated soil
System, to realize that the recycling of organic pollutant and soil recycles.Thermal desorption method repair process does not produce secondary pollution, place
It is short to manage the cycle, goes back that original soil pollutant removal is thorough, while can realize that the recycling of organic pollutant recycles, and has preferably
Environment, social and economic benefit.
To realize above-mentioned purpose of utility model, spy uses following technical scheme：
A kind of Thermal desorption repair system of organic material contaminated soil, including：
Pretreatment module, for being pre-processed to treating material；
Metering feeding module, Thermal desorption processing module is given for measure simultaneously uniform transmission by pretreated material；
Thermal desorption processing module, for carrying out Thermal desorption to the material from the metering feeding module, and export pyrolysis
Vapour is pyrolyzed caused by analysis and goes back original soil；
Vapour processing module is pyrolyzed, for the pyrolysis vapour to be cooled down and separated；
Soil resource module is reduced, for handling the original soil of going back.
Further, the pretreatment module includes being used to carry out broken disintegrating apparatus and use to the treating material
In the screening plant that sieve picks.
Further, the metering feeding module passes through drag conveyor continuous feed.
Further, exhaust gases passes are provided with the Thermal desorption processing module, the Thermal desorption processing module passes through adverse current
High-temperature flue gas heated, the adverse current refers to that the transmission direction when flow direction of high-temperature flue gas is fed with material is opposite.
Further, the Thermal desorption processing module includes feeding serew propeller and pyrolysis feeding screw, described to feed
Material transferring from the metering feeding module is pyrolyzed feeding screw to be carried out to material by material spiral propeller to described
Thermal desorption.
Further, the Thermal desorption processing module will carry out the material indirectly heat of Thermal desorption under anoxybiotic environment
Into the treating material more than organic pollution boiling point.
Further, the feeding serew propeller provides anoxybiotic ring by end material envelope for the Thermal desorption processing module
Border.
Further, the Thermal desorption is divided into predrying section and Thermal desorption section, and predrying section of temperature is 100~200 DEG C, is stopped
Stay 10~30min of time；Pyrolysis section temperature is 200~700 DEG C, 10~30min of residence time.
Further, the cooling and separation that the pyrolysis vapour processing module is carried out include：The pyrolysis vapour is used into cold water
Spray directly cools down, and the oil water mixture obtained after cooling carries out air supporting water-oil separating, or by the pyrolysis vapour using heat exchange disk
Pipe cooling indirectly, the oil water mixture obtained after cooling carry out gravity settling separation.
Further, the reduction soil resource module using humidification spiral propeller or humidifies scrapper conveyor to the reduction
Soil carries out plus water cooling depositing dust processing.
When carrying out Thermal desorption reparation to organic material contaminated soil using said system, organic material contaminated soil is carried out first
Pretreatment, as treating material；Then treating material is subjected to Thermal desorption, the temperature of Thermal desorption has in treating material
It is more than the boiling point of organic pollutants；Finally by Thermal desorption obtain go back original soil processing after export, and vapour will be pyrolyzed caused by Thermal desorption
Cooled down and separated after extraction.
The beneficial effects of the utility model are as follows：
Original soil mineral oil in fluid content of going back after PROCESS FOR TREATMENT is less than 3000mg/Kg dewatered sludges, and benzo (a) pyrene is less than
3mg/kg, it can be used as agricultural soil or pave the way or brickmaking.
The utility model produces for continuous operation, is greatly improved capacity utilization.Energy consumption of the present utility model is low, day
30~60m of right gas consumption amount3/ ton, power consumption 20~30KW.h/ tons.
The utility model processing organic polluted soil cost is 300~350 yuan/ton, and the cost is less than in the market high temperature oxygen
The processing cost of the technology such as change and rotary kiln pyrogenation, can produce larger economic benefit.
The utility model is different from the technology such as high-temperature oxydation and burning, and not producing bioxin etc. in production process has poison gas
Body, secondary pollution is not produced, can also avoid the body harm to site operation personnel.
The utility model is applied to oil pipeline road thorn leakage contaminated soil, ground sludge, chemical pharmaceutical process organic matter
(its usual oil content is about 20% to contaminated soil, and moisture content is about that 20%), the oil content that original soil is gone back after processing is less than
0.3%, it can reduce environmental pollution, bring very big environmental benefit.
Brief description of the drawings
The overall structure diagram of the Thermal desorption repair system of Fig. 1 the utility model organic material contaminated soils.
The structural representation of Fig. 2 the utility model embodiment Thermal desorption processing equipments, wherein：1- spiral propellers slow down
Machine, 2- charging apertures, 3- high-temperature flue gas outlets, 4 auger cores, 5- heat-insulation layers, 6- spiral propeller shells, 7- high-temperature flue gas
Import, 8- material outlets, 9- access holes, 10- spiral propeller blades, 11- high-temperature flue gas annular space passages.
Embodiment
Embodiment of the present utility model is described in detail below in conjunction with embodiment, but those skilled in the art
It will be understood that the following example is merely to illustrate the utility model, and it is not construed as limiting claim model of the present utility model
Enclose.
Embodiment
The reason such as the leakage of pipeline thorn, pipeline breaking causes crude oil leakage during certain oilfield collection is defeated, pollutes large stretch of ground
Table soil, such oil contaminated soil is concentrated roping by oil field, and contaminated soil is deposited in the station to solid waste liquid treating stations safe storage
Up to 120,000 sides are measured, while per the side of annual increment about 3~40,000, contaminated soil Thermal desorption is carried out using system of the present utility model and repaiied
It is multiple, mainly include：
(1) material pre-processes
1) organic material contaminated soil obtained from organic material contaminated soil storage pool is turned over into throwing through digging machine, dried, crushed
Equipment (may be selected from common shredder, jaw crusher or hammer mill) is broken, and screening plant (may be selected from common straight line
Vibratory sieve, roller vibrating screen or broken loading machine, the present embodiment are shaken from the straight line of broken loading machine and mesh size less than 3cm
Dynamic sieve) sieve picks, and remove the debris such as the rubbish thing of bulk, branch tree root, weeds, stone；
2) the organic matter thing contaminated soil after screening is continued to turn over throwing, dried, less than 20% is down to its moisture content.
(2) material metering is fed
1) pretreated soil is poured into silo using loading machine, silo bottom is auger conveyor, spiral transferring
Send device that material is equably delivered into hopper outlet；It is weight calculation belt conveyer scale, continuous metering, it is ensured that uniform feeding below hopper outlet
(inlet amount of the present embodiment is 4t/h), so as to reduce or avoid the fluctuation of the quality of product after Thermal desorption；The inlet amount of material
The quality index of solids product after decision Thermal desorption, consequently facilitating adjusting Thermal desorption technique according to material physical and chemical parameter.
2) permanent strong magnetic iron is being hung above belt conveyer scale end at 5cm, is removing the ironys such as iron block larger in material, screw
Impurity；
3) material is transmitted to the charging of pyrolysis analysis system by drag conveyor (can also use auger conveyor) after iron removaling
Mouthful.
(3) material Thermal desorption is handled
The equipment that the step uses is as shown in Fig. 2 specific processing step is as follows：
1) burnt in the burner for fuel with diesel oil or natural gas (the present embodiment uses pipeline gas) and produce high temperature
Flue gas, high-temperature flue gas (mainly include to pyrolysis spiral propeller in a counter-current configuration in high-temperature flue gas annular space passage 11：Spiral pushes away
Enter device reductor 1, auger core 4, spiral propeller shell 6 and spiral propeller blade 10) preheated, it is described inverse
Stream mode is that high-temperature flue gas promotes transmission direction on the contrary, which heat exchange efficiency is higher with material；
2) by feeding serew propeller by material uniformly, continuously transmit to pyrolysis feeding screw, material is in anoxybiotic ring
It is heated indirectly under border in treating material more than organic pollution boiling point, the heating process of material is divided into predrying section and heat
Section is parsed, predrying section of temperature is 100~200 DEG C, residence time about 20min, and purpose removes the moisture in material, Thermal desorption section
Temperature is 200~700 DEG C, residence time about 20min, it is therefore an objective to remove the organic pollution in material.
Two stage material progressions are to be promoted by being pyrolyzed spiral propeller rotation in cylinder, rather than common circle
Cylinder itself rotation, its advantage are：1) it is different from the intermittent feeding of cylinder itself rotation, continuous feed can be achieved；2) temperature of charge
Gradually risen from import to outlet, heat exchange efficiency is high；3) can be increased according to material physicochemical property by adjusting screw propulsion speed
Big or reduction residence time of material, with this equilibrium product quality and production efficiency.
Wherein, anoxybiotic environment need to be real by way of feeding serew propeller import material seals and star-like discharging device exports gas lock
It is existing.Import material envelope refers to, feeding serew propeller end 20cm on-bladeds, is pushed by material, accumulates and seal cylindrical helical
Propeller end cavity, block extraneous air and enter in pyrolysis spiral propeller cavity.Outlet gas lock refers to unload using star
Glassware realizes that extraneous air does not enter in pyrolysis spiral cavity.
In general, crude oil pollutant need to be heated to 600~700 DEG C, contaminated by diesel oil thing need to be heated to 350~400 DEG C,
Organochlorine pollutant need to be heated to 300~500 DEG C etc..
3) it is pyrolyzed caused pyrolysis vapour in feeding propeller cavity successively to be extracted out by blower fan, makes to remain in cavity
Micro-vacuum state, pressure are usually -500~200Pa.
4) go back original soil after high temperature pyrolysis is analysed to transmit to discharge system, discharge system sets shower humidification shower nozzle, pair also
Original soil carries out plus water cooling depositing dust, can typically use humidification spiral propeller or humidification scrapper conveyor, pass through runoff investigation (this implementation
Example water consumption is 1~1.5m3/ h) reduction soil temperature degree is down to less than 80 DEG C, discharge not airborne dust.
(4) it is pyrolyzed the direct cooling treatment of vapour
The pyrolysis vapour that blower fan is extracted out is sprayed using cold water and directly cooled down, and circulating cooling water is 60t/h in the present embodiment.No
Solidifying gas mixes fuel after being purified by two-stage eddy flow and carries out reuse, alternative 20~30% natural gas；Oil mixing with water after cooling
Thing (70~80 DEG C) by air supporting oil-water separation system (by compressor be passed through air (can also use nitrogen) carry out air supporting, and
PH regulations are carried out by caustic soda (can also use soda ash)) air supporting water-oil separating is carried out, organic matter liquid carries out recovery profit after separation
With the water (about 50 DEG C) after separation carries out circulated sprinkling cooling after cooling by air cooling system, and circulating cooling coolant-temperature gage is
30 DEG C, unnecessary waste water is delivered to waste water processing station and carries out deep purifying processing, often handles 100 tons of contaminated soils and produces 10~15t
Waste water.
Pyrolysis vapour can also be handled using the indirect type of cooling, and the pyrolysis vapour that blower fan is extracted out is cooled down using heat exchange coil
(pyrolysis vapour walks tube side, and cooling circulating water walks shell side), fixed gas mixes fuel after being purified by two-stage eddy flow cleaning system and carried out
Reuse；Oil water mixture carries out gravitational settling after cooling, and upper strata organic matter liquid is recycled, and lower floor's waste water is delivered to useless
Water treatment station carries out deep purifying processing, and cooling circulating water continuously uses in air cooling system cooling Posterior circle, and the two is final
Treatment effect without too big difference.
Its oil contaminated soil disposal result is as follows：
1) (sample size is sampled to Thermal desorption residue：2000g, sampling time：2016.09.20 monitoring step：Take suitable
Soil sample is measured through carbon tetrachloride extraction, is measured with 4cm cuvette JDS-105U type infrared spectrometric oil detectors, analysis time
2016.09.22) Surveillance that monitoring obtains shows that original soil is gone back after processing realizes harmlessness disposing, and oil content meets《Agriculture
With pollutant catabolic gene standard in sludge》(GB4284-84) oil content ＜ 0.3% (measured value 0.276%) in；Original soil is gone back after processing
Unified roping carries out place mat well site road, pair goes back original soil and realizes recycling.
2) 100 tons of contaminated soils are often handled, reclaim 10 tons of the crude oil, (BS＆W containing solid water in oil recovery<1%, waste liquid after processing
It must recycle, oil recovery all transfers to Party A, realizes resource recycling, crude oil per ton is by 2000 yuan of calculating, year processing
50000 tons of contaminated soils, 5000 tons of crude oil is reclaimed, produce economic benefit 10,000,000.
3) do not occur secondary pollution in processing procedure, flue gas realizes that qualified discharge meets after processing《Atmosphere pollution integrates
Discharge standard》(GB16297-1996).
Therefore the utility model technique is by the Thermal desorption reparation to oil contaminated soil, can realize larger environment,
Economic and social benefit.
Claims (10)
- A kind of 1. Thermal desorption repair system of organic material contaminated soil, it is characterised in that including：Pretreatment module, for being pre-processed to treating material；Metering feeding module, Thermal desorption processing module is given for measure simultaneously uniform transmission by pretreated material；Thermal desorption processing module, for carrying out Thermal desorption to the material from the metering feeding module, and export Thermal desorption production Raw pyrolysis vapour and go back original soil；Vapour processing module is pyrolyzed, for the pyrolysis vapour to be cooled down and separated；Soil resource module is reduced, for handling the original soil of going back.
- A kind of 2. Thermal desorption repair system of organic material contaminated soil as claimed in claim 1, it is characterised in that the pre- place Reason module includes being used to carry out the treating material broken disintegrating apparatus and for sieving the screening plant picked.
- A kind of 3. Thermal desorption repair system of organic material contaminated soil as claimed in claim 1, it is characterised in that the metering Feed module passes through drag conveyor continuous feed.
- A kind of 4. Thermal desorption repair system of organic material contaminated soil as claimed in claim 1, it is characterised in that the pyrolysis Exhaust gases passes are provided with analysis processing module, the Thermal desorption processing module is heated by the high-temperature flue gas of adverse current, described inverse Stream refers to that the transmission direction when flow direction of high-temperature flue gas is fed with material is opposite.
- A kind of 5. Thermal desorption repair system of organic material contaminated soil as claimed in claim 1, it is characterised in that the pyrolysis Analysing processing module includes feeding serew propeller and pyrolysis feeding screw, and the feeding serew propeller will come from the metering The material transferring of feed module is to the pyrolysis feeding screw with to material progress Thermal desorption.
- A kind of 6. Thermal desorption repair system of organic material contaminated soil as claimed in claim 5, it is characterised in that the pyrolysis Analyse processing module and the material for carrying out Thermal desorption is heated to organic dirt in the treating material indirectly under anoxybiotic environment Contaminate more than thing boiling point.
- A kind of 7. Thermal desorption repair system of organic material contaminated soil as claimed in claim 6, it is characterised in that the feeding Spiral propeller provides anoxybiotic environment by end material envelope for the Thermal desorption processing module.
- A kind of 8. Thermal desorption repair system of organic material contaminated soil as claimed in claim 1, it is characterised in that the pyrolysis Analysis is divided into predrying section and Thermal desorption section, and predrying section of temperature is 100 ~ 200 DEG C, 10 ~ 30min of residence time；Pyrolysis section temperature For 200 ~ 700 DEG C, 10 ~ 30min of residence time.
- A kind of 9. Thermal desorption repair system of organic material contaminated soil as claimed in claim 1, it is characterised in that the pyrolysis The cooling and separation that vapour processing module is carried out include：The pyrolysis vapour is sprayed using cold water and directly cooled down, is obtained after cooling Oil water mixture carries out air supporting water-oil separating, or the pyrolysis vapour is cooled down indirectly using heat exchange coil, the oil obtained after cooling Aqueous mixtures carry out gravity settling separation.
- 10. the Thermal desorption repair system of a kind of organic material contaminated soil as claimed in claim 1, it is characterised in that described to go back Original soil recycling module carries out adding water cooling depositing dust processing using humidification spiral propeller or humidification scrapper conveyor to the original soil of going back.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108246774A (en) * | 2018-01-31 | 2018-07-06 | 王良伍 | A kind of organic pollution environmental protection pyrolysis treatment systems and method |
| CN108675709A (en) * | 2018-04-23 | 2018-10-19 | 中科鼎实环境工程股份有限公司 | It is a kind of repaired using thermal desorption after soil processing revetment brick method and products thereof |
| CN108787728A (en) * | 2017-05-05 | 2018-11-13 | 北京华盛坤泰环境科技股份有限公司 | A kind of the Thermal desorption restorative procedure and system of organic material contaminated soil |
-
2017
- 2017-05-05 CN CN201720494707.1U patent/CN206747261U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108787728A (en) * | 2017-05-05 | 2018-11-13 | 北京华盛坤泰环境科技股份有限公司 | A kind of the Thermal desorption restorative procedure and system of organic material contaminated soil |
| CN108246774A (en) * | 2018-01-31 | 2018-07-06 | 王良伍 | A kind of organic pollution environmental protection pyrolysis treatment systems and method |
| CN108675709A (en) * | 2018-04-23 | 2018-10-19 | 中科鼎实环境工程股份有限公司 | It is a kind of repaired using thermal desorption after soil processing revetment brick method and products thereof |
| CN108675709B (en) * | 2018-04-23 | 2021-05-14 | 中科鼎实环境工程有限公司 | Method for preparing slope protection brick by utilizing soil after thermal desorption remediation and product thereof |
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