CN104353663A - Soil thermal desorption treatment system with discharge dust removal function - Google Patents
Soil thermal desorption treatment system with discharge dust removal function Download PDFInfo
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- CN104353663A CN104353663A CN201410519941.6A CN201410519941A CN104353663A CN 104353663 A CN104353663 A CN 104353663A CN 201410519941 A CN201410519941 A CN 201410519941A CN 104353663 A CN104353663 A CN 104353663A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses a soil thermal desorption treatment system with a discharge dust removal function, and relates to a technology for treating and dedusting soil polluted by organic pollutants. The soil thermal desorption treatment system comprises a thermal desorption treatment system for treating the soil by heating to remove the soil pollutants, a tail gas dust removal system for treating dust generated in a thermal desorption treatment process, a soil retreatment system for subsequently treating the soil subjected to thermal desorption treatment, and a soil dust removal system, wherein the input of the soil retreatment system is connected with the output of the thermal desorption treatment system, and the input of the soil dust removal system is connected with the output of the soil retreatment system. According to the soil thermal desorption treatment system, raised dust of the discharged soil is effectively controlled through the soil retreatment system and the soil dust removal system; during field operation, basically no raised dust is generated at the discharge hole of thermal desorption equipment, so that the field production environment is greatly improved; also, the resource recycling can be achieved.
Description
Technical field
The present invention relates to organic pollution contaminated soil process dedusting technology, refer more particularly to a kind of Soil Thermal desorption treatment system with discharging dedusting function.
Background technology
In the past few decades, because the production and application of the chemicals such as agricultural chemicals, the discharge of waste residue and liquid are toppled over and the series of factors such as production process leakage, cause a large amount of organic pollution to be discharged and carry out environment, and be finally mainly accumulated in soil environment, cause serious soil organic contamination, China's soil safety utilization and agricultural production are caused unfavorable and threatened, needs reparation badly.
Thermal desorption technology is one of the most frequently used, the most ripe organic polluted soil recovery technique, and its cardinal principle adopts direct or indirect heat exchange method, and in heating soil, pollutant is to sufficiently high temperature, makes it evaporate and the process be separated with soil.According to heating-up temperature height, high-temperature hot desorption and low-heat desorption technology can be divided into; According to mode of heating, direct thermal desorption and indirect thermal desorption can be divided into just to seem; According to occupation mode, in-situ heat desorption and dystopy thermal desorption technology can be divided into.Thermal desorption technology has advantages such as disposing thoroughly, technical risk is little, applied widely, can be used for disposing all kinds of materials such as soil, mud, sediment, be suitable for disposal pollutant and comprise each pollutants such as benzene homologues, petroleum hydrocarbon, polycyclic aromatic hydrocarbon, Polychlorinated biphenyls (PCBs), agricultural chemicals, arsenic, mercury.Thermal desorption technology is particularly useful for 1, two (rubigan)-2 of 1-, 2-dichloroethylene (DDE), biconjugate chlorphenyl trichloroethanes (DDT), the disposal of the persistence organic pollutants such as Polychlorinated biphenyls (PCBs), " site clearing treatment technology: annual status report (the 12nd edition) " according to Environmental Protection Agency (EPA) issues: during 1982-2005, having 69 U.S.'s super fund projects adopts thermal desorption technology to dispose, account for about 8% of sum, average year treating capacity reaches ton up to a million, the Pollution Field disposed comprises Polychlorinated biphenyls (PCBs), organic pollution (POPs) and the polycyclic aromatic hydrocarbons (PAHs) such as organo-chlorine pesticide (OCPs), the other kinds organic pollution such as benzene homologues.
Existing thermal desorption treatment system also has cleaner, but be mainly directed to the flue gas produced in thermal desorption processing procedure and carry out dedusting, but ignore a problem, dispose owing to adopting mode of heating, disposal process soil moisture is evaporated, cause the antecedent soil moisture of discharging opening, containing a large amount of dust granules, in discharging process, can airborne dust be produced, execute-in-place environment is poor, therefore, need according to thermal desorption equipment characteristic, design effective discharging soil dust controlling system.The research of China in thermal desorption recovery technique is still in the starting stage, Shortcomings in thermal desorption equipment understanding, design, manufacture etc., and the thermal desorption equipment lacking independent research and the discharge system be suitable for, realize discharging soil airborne dust and effectively control.
Summary of the invention
The invention provides a kind of Soil Thermal desorption treatment system with discharging dedusting function, the soil solving the discharging opening of thermal desorption equipment in prior art is drier, still containing a large amount of dust granules in soil, easily produce a large amount of airborne dusts, the problem of execute-in-place environment difference.
For solving the problems of the technologies described above, technical scheme provided by the invention is:
A kind of Soil Thermal desorption treatment system with discharging dedusting function of the present invention, comprise and adopt the thermal desorption treatment system that mode of heating process soil removes its pollutant and the tails dedusting system that the flue dust produced in thermal desorption processing procedure is processed, it also comprises soil secondary treatment system and soil dust pelletizing system that the soil after to thermal desorption process carries out subsequent treatment, the input of described soil secondary treatment system is connected with the output of described thermal desorption treatment system, and the input of described soil dust pelletizing system is connected with the output of described soil secondary treatment system.
Further, it also comprises dust secondary treatment system, and the input of described dust secondary treatment system is connected with the output of described tails dedusting system, and the output of described dust secondary treatment system is connected with the input of described soil dust pelletizing system.
Further, described soil secondary treatment system comprises earthenware parts, cooling and heat recovery component and soil wetted part; The described earthenware parts that go out comprise columniform housing, soil pusher, driving motor, and described shell one end is provided with charging aperture, and the other end is provided with discharging opening, and described soil pusher is positioned at housing, and is connected with driving motor; Described cooling and heat recovery component comprise the chuck layer, water inlet, delivery port and the heat exchanger that are arranged on hull outside, described water inlet and described delivery port are separately positioned on described chuck layer two ends, described heat exchanger input connects described delivery port, and output connects described water inlet; Described soil wetted part is the spray equipment being arranged on described discharge outlet.
Further, the building block of described dust secondary treatment system is identical with the building block of described soil secondary treatment system.
Further, described soil dust pelletizing system comprises suspended hood, filter screen, sprinkler head, air inducing blower fan, air inducing pipeline, vibrating motor, spring and chimney, the discharging opening top of earthenware parts is gone out described in described suspended hood is arranged on, described filter screen, and to be connected with described vibrating motor at described suction opeing by spring fitting.
Further, described soil pusher is the design of screw rod Promoting Form.
Further, the sprinkler head of described soil dust pelletizing system adopts small-sized suspended body flowmeter to measure cooling water flow.
Further, the described material going out earthenware parts is 310S stainless steel.
Adopt technical scheme provided by the invention, compared with existing known technology, there is following beneficial effect:
(1) the present invention is control effectively to discharging soil airborne dust by soil secondary treatment system and soil dust pelletizing system, and during execute-in-place, the discharging opening of thermal desorption equipment does not have airborne dust to produce substantially, significantly improves on-the-spot production environment.
(2) of the present invention go out earthenware parts adopt screw rod advance out earthenware, the smooth discharging of the dust that soil and tails dedusting system are left after can realizing thermal desorption process, it also coordinates cooling and heat recovery component, discharging soil is tentatively lowered the temperature, reduce discharging soil heat energy, effectively reduce the cost of follow-up dust removal process, and the waste heat of soil is realized reclaiming by heat exchanger.
(3) the present invention is designed with chuck layer, cooling water enters chuck layer by water inlet, the soil gone out in earthenware parts is tentatively cooled, in cooling procedure, soil does not directly mix with cooling water, both soil in screw drive discharging process had effectively been avoided to be bonded on screw rod, prevent the generation of stopping state, be convenient to again the recovery of waste heat.
(4) discharge outlet that the present invention is going out earthenware parts arranges spray equipment, sprays, reduce the soil moisture further to discharging soil, removes airborne dust, and after spray, soil is transferred to by conveying device and disposes rear soil stockyard.
(5) soil Design of Dust-removing System of the present invention is adhesion type vibration dust remover, screen cloth and nozzle are set in suspended hood, by air-introduced machine, the dust-laden steam produced after spray is caused screen cloth place, above starting screen cloth, nozzle is sprayed water, remove dust in steam, the dust be attached on screen cloth is shaken off down by effect of vibration, and its equipment is simple, and efficiency of dust collection is high.
(6) sprinkler head of the soil dust pelletizing system in the present invention adopts small-sized suspended body flowmeter to measure, and effectively automatically controls injection flow rate, avoid water spray too much to cause soil adhesion on discharging belt conveyer, or the very few dust removing effects that causes of spraying water is bad.
Accompanying drawing explanation
Fig. 1 is a kind of process chart with the Soil Thermal desorption treatment system of discharging dedusting function of the present invention.
Fig. 2 is the structural representation of soil secondary treatment system in the present invention and dust secondary treatment system.
Fig. 3 is the front view of the soil dust pelletizing system in the present invention.
Fig. 4 is the left view of the soil dust pelletizing system in the present invention.
Label declaration in schematic diagram:
1, thermal desorption treatment system; 2, tails dedusting system; 3, soil secondary treatment system; 31, driving motor; 32, charging aperture; 33, soil pusher; 34, discharging opening; 35, spray equipment; 36, chuck layer; 37, water inlet; 38, delivery port; 4, dust secondary treatment system; 5, soil dust pelletizing system; 51, suspended hood; 52, spring; 53, sprinkler head; 54, filter screen; 55, air inducing blower fan; 56, vibrating motor; 57, air inducing pipeline; 58, chimney; 6, conveying device.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, technical scheme of the present invention is further described in detail.
Composition graphs 1, a kind of Soil Thermal desorption treatment system with discharging dedusting function of the present invention, comprise and adopt the thermal desorption treatment system 1 that mode of heating process soil removes its pollutant and the tails dedusting system 2 that the flue dust produced in thermal desorption processing procedure is processed, herein, thermal desorption treatment system 1 is by direct or indirect heat exchange method, in heating soil, pollutant is to sufficiently high temperature, it is made to evaporate and the process be separated with soil, and finally obtain flue gas and soil, in addition, it also comprises soil secondary treatment system 3 and soil dust pelletizing system 5 that the soil after to thermal desorption process carries out subsequent treatment, the input of soil secondary treatment system 3 is connected with the output of thermal desorption treatment system 1, the input of soil dust pelletizing system 5 is connected with the output of soil secondary treatment system 3, namely the soil after thermal desorption treatment system 1 process enters soil secondary treatment system 3, to enter again soil dust pelletizing system 5 after soil secondary treatment system 3 processes, in addition, it also can comprise dust secondary treatment system 4, the input of dust secondary treatment system 4 is connected with the output of tails dedusting system 2, the output of dust secondary treatment system 4 is connected with the input of soil dust pelletizing system 5, namely the dust after tails dedusting system 2 process enters dust secondary treatment system 4, soil dust pelletizing system 5 of entering again after dust secondary treatment system 4 processes.
Composition graphs 2, the building block of soil secondary treatment system 3 is identical with dust secondary treatment system 4 building block, comprises earthenware parts, cooling and heat recovery component and soil wetted part, going out earthenware parts material is 310S stainless steel, 310S stainless steel has good non-oxidizability, nonmagnetic under solid solution condition, good solderability, most high-temperature resistant 1200 DEG C, can use continuously below 1150 DEG C, go out earthenware parts and comprise columniform housing, the soil pusher 33 of screw propelling, driving motor 31, shell one end is provided with charging aperture 32, the other end is provided with discharging opening 34, the soil pusher 33 of screw propelling is positioned at housing, and be connected with driving motor 31, soil after being processed by thermal desorption treatment system 1 or enter in housing from charging aperture 32 by the dust after tails dedusting system 2 processes, driving motor 31 drives the soil pusher 33 of screw propelling to rotate in housing, promote the soil in housing or dust advance, and fully contact with inner walls, herein go out earthenware parts can realize thermal desorption process after the smooth discharging of dust be left of soil and tails dedusting system, and cooling and heat recovery component can also reach the effect of cooling, last soil or dust from discharging opening 34 out, are transported to the soil dust pelletizing system 5 that will describe by conveying device 6, in addition, cooling and heat recovery component comprise the chuck layer 36 being arranged on hull outside, water inlet 37, delivery port 38 and heat exchanger, water inlet 37 and delivery port 38 are separately positioned on chuck layer 36 two ends, heat exchanger input connects delivery port 38, output connects water inlet 37, cooling water enters chuck layer 36 by inlet opening, the heat absorbing chuck layer 36 reduces the temperature earthenware parts, and and own temperature height, current flow out from delivery port 38 again, enter heat exchanger, heat exchanger reduces the temperature of water, reclaim heat energy, it is the recycling to resource, in a heat exchanger by the water of lowering the temperature, water inlet 37 can be flowed to again, so, cooling water realizes cycling and reutilization, and have higher thermal can soil through this cooling after, soil heat energy reduces greatly, the energy that soil produces airborne dust tails off, alleviate the cost of follow-up dust removal process, in addition, soil wetted part is the spray equipment 35 being arranged on discharging opening 34 place, and when soil is disposed to conveying device 6 by discharging opening 34, to soil spraying cooling water, moistening soil is to reduce airborne dust.
Composition graphs 3 and Fig. 4, soil dust pelletizing system 5 comprises suspended hood 51, filter screen 54, sprinkler head 53, air inducing blower fan 55, air inducing pipeline 57, vibrating motor 56, spring 52 and chimney 58, dust-laden steam can be produced when the soil that soil secondary treatment system 3 and dust secondary treatment system 4 processed sprays at discharging opening 34 place, so suspended hood 51 can be arranged on out discharging opening 34 top of earthenware parts, filter screen 54 is arranged on suction opeing by spring 52, and be connected with vibrating motor 56, like this, the dust-laden steam produced after discharging soil spray causes filter screen 54 place by air-introduced machine effect, the sprinkler head 53 started above filter screen 54 is sprayed water simultaneously, dust granules in steam is made to stick on filter screen 54, be attached to dust on filter screen 54 by effect of vibration shake off to transfer on conveying device 6 dispose after soil stockyard, after dedusting, gas is discharged by chimney 58, and the sprinkler head 53 of soil dust pelletizing system 5 adopts small-sized suspended body flowmeter to measure cooling water flow, effectively automatically control injection flow rate, water spray is avoided too much to cause soil adhesion on conveying device 6, or the very few dust removing effects that causes of spraying water is bad.
Actual motion dispose show: desorption temperature is 200 ~ 600 DEG C, and desorption time is 10 ~ 40min, desorption conditions under, meet equipment dust removal requirement by above-mentioned dust pelletizing system, flue gas qualified discharge after dedusting, site operation does not produce airborne dust.
It should be noted last that, above detailed description of the invention is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of the technical program, it all should be encompassed in the middle of the right of the technical program.
Claims (8)
1. one kind has the Soil Thermal desorption treatment system of discharging dedusting function, comprise and adopt the thermal desorption treatment system that mode of heating process soil removes its pollutant and the tails dedusting system that the flue dust produced in thermal desorption processing procedure is processed, it is characterized in that, also comprise soil secondary treatment system and soil dust pelletizing system that the soil after to thermal desorption process carries out subsequent treatment, the input of described soil secondary treatment system is connected with the output of described thermal desorption treatment system, and the input of described soil dust pelletizing system is connected with the output of described soil secondary treatment system.
2. the Soil Thermal desorption treatment system with discharging dedusting function according to claim 1, it is characterized in that, also comprise dust secondary treatment system, the input of described dust secondary treatment system is connected with the output of described tails dedusting system, and the output of described dust secondary treatment system is connected with the input of described soil dust pelletizing system.
3. the Soil Thermal desorption treatment system with discharging dedusting function according to claim 2, is characterized in that, described soil secondary treatment system comprises earthenware parts, cooling and heat recovery component and soil wetted part; The described earthenware parts that go out comprise columniform housing, soil pusher, driving motor, and described shell one end is provided with charging aperture, and the other end is provided with discharging opening, and described soil pusher is positioned at housing, and is connected with driving motor; Described cooling and heat recovery component comprise the chuck layer, water inlet, delivery port and the heat exchanger that are arranged on hull outside, described water inlet and described delivery port are separately positioned on described chuck layer two ends, described heat exchanger input connects described delivery port, and output connects described water inlet; Described soil wetted part is the spray equipment being arranged on described discharge outlet.
4. the Soil Thermal desorption treatment system with discharging dedusting function according to claim 3, is characterized in that, the building block of described dust secondary treatment system is identical with the building block of described soil secondary treatment system.
5. the Soil Thermal desorption treatment system with discharging dedusting function according to claim 4, it is characterized in that, described soil dust pelletizing system comprises suspended hood, filter screen, sprinkler head, air inducing blower fan, air inducing pipeline, vibrating motor, spring and chimney, the discharging opening top of earthenware parts is gone out described in described suspended hood is arranged on, described filter screen, and to be connected with described vibrating motor at described suction opeing by spring fitting.
6. according to the described Soil Thermal desorption treatment system with discharging dedusting function arbitrary in claim 3 ~ 5, it is characterized in that, described soil pusher is the design of screw rod Promoting Form.
7. the Soil Thermal desorption treatment system with discharging dedusting function according to claim 5, is characterized in that, the sprinkler head of described soil dust pelletizing system adopts small-sized suspended body flowmeter to measure cooling water flow.
8. the Soil Thermal desorption treatment system with discharging dedusting function according to claim 6, it is characterized in that, the described material going out earthenware parts is 310S stainless steel.
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| CN201410519941.6A CN104353663B (en) | 2014-09-30 | 2014-09-30 | A kind of Soil Thermal desorption treatment system with discharging dedusting function |
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Cited By (7)
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| CN108246774A (en) * | 2018-01-31 | 2018-07-06 | 王良伍 | A kind of organic pollution environmental protection pyrolysis treatment systems and method |
| CN108817062A (en) * | 2018-06-28 | 2018-11-16 | 上海环境工程设计研究院有限公司 | Indirect thermal desorption device for organic polluted soil showering |
| CN109097582A (en) * | 2018-08-17 | 2018-12-28 | 安阳工学院 | A kind of mechanical engineering powdery castoff processing system |
| CN109500072A (en) * | 2018-12-28 | 2019-03-22 | 叶淑源 | A kind of organic polluted soil original position thermal desorption prosthetic device |
| CN110653249A (en) * | 2019-11-04 | 2020-01-07 | 徐州顺平生物科技有限公司 | Dual repairing device for heavily-polluted soil |
| CN111014241A (en) * | 2019-12-13 | 2020-04-17 | 湖州三新汽车环保科技有限公司 | Industry collection system that gives up admittedly |
| CN112139231A (en) * | 2020-09-16 | 2020-12-29 | 山东大成环境修复有限公司 | System and method for low-temperature thermal desorption of volatile organic contaminated soil |
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| CN112139231A (en) * | 2020-09-16 | 2020-12-29 | 山东大成环境修复有限公司 | System and method for low-temperature thermal desorption of volatile organic contaminated soil |
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Address after: Hangzhou Jianggan District City, Zhejiang province 310020 days Xinglong Building B, 1302 Patentee after: China (Hangzhou) Co., Ltd. Address before: Hangzhou Jianggan District City, Zhejiang province 310000 days Xinglong Building B, 1302 Patentee before: HANGZHOU DADI ENVIRONMENTAL PROTECTION ENGINEERING CO., LTD. |