CN106216374B - Contaminated soil heat treatment system - Google Patents
Contaminated soil heat treatment system Download PDFInfo
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- CN106216374B CN106216374B CN201610824316.1A CN201610824316A CN106216374B CN 106216374 B CN106216374 B CN 106216374B CN 201610824316 A CN201610824316 A CN 201610824316A CN 106216374 B CN106216374 B CN 106216374B
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- shell
- soil
- pretreatment
- reprocessing
- stirring cage
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/02—Extraction using liquids, e.g. washing, leaching, flotation
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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
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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)
- Treating Waste Gases (AREA)
Abstract
The contaminated soil heat treatment system comprises a feeding device, a pretreatment device, a reprocessing device and an air purification device; the feeding device is a stirring cage, and one end of the stirring cage is provided with a stirring cage feeding hole; the pretreatment device comprises a pretreatment shell, the upper port of the pretreatment shell is connected with a discharge port of the stirring cage, two rows of activated carbon absorption groups which are arranged up and down are arranged in the pretreatment shell, and each activated carbon absorption group consists of a plurality of parallel hollow pipes, gears, bearing seats and gear motors. The invention adopts a system mode to treat the polluted soil, when the soil passes through the feeding device, the soil is transported by the stirring cage, and meanwhile, the soil is crushed, so that the diameter of soil particles is reduced as much as possible; when soil passes through the pretreatment device, under the effect of active carbon absorption group, extrude through empty pipe, make soil continue to smash, and kibbling soil absorbs harmful organic pollutant with the active carbon contact, improves the treatment effect.
Description
Technical Field
The invention belongs to the field of environmental engineering, and particularly relates to a contaminated soil heat treatment system.
Background
After the soil in the specific area is polluted, the soil can be reused after being polluted, otherwise, the soil can affect the environment. Currently, heat treatment techniques are used for the treatment. However, the heat treatment equipment is huge in size, organic pollutants still remain in the soil after the soil is subjected to steam treatment and heating treatment, and no technology can solve the problems at present.
Disclosure of Invention
The invention provides a contaminated soil heat treatment system, which is used for overcoming the defects in the prior art.
The invention is realized by the following technical scheme:
the contaminated soil heat treatment system comprises a feeding device, a pretreatment device, a reprocessing device and an air purification device; the feeding device is a stirring cage, and one end of the stirring cage is provided with a stirring cage feeding hole; the pretreatment device comprises a pretreatment shell, the upper port of the pretreatment shell is connected with a discharge port of a stirring cage, one side of the lower part of the discharge port of the stirring cage is provided with a rotating motor, an output shaft of the rotating motor is provided with a cutting knife, the cutting knife is positioned at the lower end of the discharge port of the stirring cage, two rows of activated carbon absorption groups which are arranged up and down are arranged in the pretreatment shell, each group of activated carbon absorption group consists of a plurality of parallel hollow pipes, gears, bearing seats and gear motors, activated carbon is filled in the hollow pipes, a plurality of through holes are formed in the hollow pipes, screen plates are arranged on the through holes, the aperture of each screen plate is smaller than the diameter of the activated carbon, the hollow pipes are connected with the pretreatment shell through the bearing seats, the other ends of the hollow pipes are connected with the gears, the gears of the adjacent hollow pipes are mutually meshed, one of the gears is connected with the output shaft of the gear motors, and the hollow pipes of the two groups of activated carbon absorption groups are mutually vertical; the reprocessing device comprises a reprocessing shell, a reprocessing shell feed inlet of the reprocessing shell is connected with an outlet at the lower end of the reprocessing shell, a horizontal plate-type conveying belt is arranged in the reprocessing shell, through holes are formed in the surface of the plate-type conveying belt, two vertical partition plates are arranged in the reprocessing shell, a channel through which the plate-type conveying belt can pass is formed in each partition plate, the reprocessing shell is divided into a left cavity, a middle cavity and a right cavity by the partition plates, a left cavity is connected with the reprocessing shell feed inlet, a steam pipe is arranged in the middle cavity, the steam pipe is located in the middle of the plate-type conveying belt, a plurality of high-pressure spray heads are arranged on the upper portion of the steam pipe, a plurality of heating pipes are mounted in the right cavity, a discharge port is formed in the lower end of the right cavity, a first exhaust port is formed in the upper portion of the right cavity, a first exhaust fan is mounted on the first exhaust port, and the first exhaust port is connected with an air purifying device.
According to the contaminated soil heat treatment system, the air purification device comprises a waste gas treatment box and an organic matter absorption liquid, the first exhaust port is connected with one end of the exhaust pipe, the other end of the exhaust pipe is inserted into the waste gas treatment box and is positioned at the lower part of the liquid level of the organic matter absorption liquid, and the exhaust pipe of the waste gas treatment box is arranged at the upper end of the waste gas treatment box.
According to the polluted soil heat treatment system, the annular hot air pipe is arranged in the pretreatment shell, a plurality of air outlet holes are uniformly formed in the hot air pipe, the hot air pipe is positioned at the lower part of the activated carbon absorption group and is connected with one end of the air inlet pipe, the other end of the air inlet pipe is connected with the air inlet pump, and the periphery of the air inlet pipe is wound with the heating wires; the upper end of the pretreatment shell is provided with a second exhaust port, a second exhaust fan is arranged at the second exhaust port, and the second exhaust port is connected with an air purification device.
According to the contaminated soil heat treatment system, the retreatment shell at the side part of the discharge port is provided with the scraper which is matched with the lower end of the plate-type conveyor belt.
The invention has the advantages that: the system adopts a system mode to treat the polluted soil, the soil is transported through the stirring cage when passing through the feeding device, and meanwhile, the soil is crushed, so that the diameter of soil particles is reduced as much as possible, the soil out of the stirring cage is further crushed through the cutting knife, and meanwhile, the cutting knife uniformly breaks up and distributes the soil; when the soil passes through the pretreatment device, the soil is extruded through the hollow pipe under the action of the activated carbon absorption group, so that the soil is continuously crushed, and the crushed soil is contacted with the activated carbon to absorb harmful organic pollutants, thereby improving the treatment effect; after the soil is treated and loaded, heating organic pollutants in the soil through hot steam and moistening the soil to dissolve the water-soluble organic pollutants in water, heating the soil after the soil passes through the right cavity to evaporate the water and the organic pollutants together to finally obtain clean soil; the gas with the pollution evaporated is treated by a waste gas treatment device, and clean air is discharged and taken up, so that the environment is not polluted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of the invention; FIG. 2 is an enlarged view of a cross-sectional view taken along line A-A of FIG. 1; fig. 3 is an enlarged view of part i of fig. 2.
And (3) drawing number labeling: 1 stirring cage feed inlet, 2 stirring cage, 3 first exhaust port, 4 first exhaust fan, 5 exhaust pipe, 6 exhaust treatment box exhaust pipe, 7 exhaust treatment box, 8 second exhaust fan, 9 second exhaust port, 10 heating pipe, 11 discharge port, 12 scraper blade, 13 high-pressure spray head, 14 steam pipe, 15 clapboard, 16 plate type driving belt, 17 retreatment shell, 18 retreatment shell inlet, 19 hot air pipe, 20 intake pipe, 21 heating wire, 22 intake pump, 23 pretreatment shell, 24 gear motor, 25 bearing seat, 26 hollow pipe, 27 gear, 28 through hole, 29 screen plate, 30 air outlet, 31 rotating motor, 32 cutting knife.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A contaminated soil heat treatment system, as shown in the figure, comprising a feeding device, a pretreatment device, a reprocessing device and an air purification device; the feeding device is a stirring cage 2, and one end of the stirring cage 2 is provided with a stirring cage feeding port 1; the pretreatment device comprises a pretreatment shell 23, the upper port of the pretreatment shell 23 is connected with the discharge port of the stirring cage 2, one side of the lower part of the discharge port of the stirring cage 2 is provided with a rotating motor 31, the output shaft of the rotating motor 31 is provided with a cutting knife 32, the cutting knife 32 is positioned at the lower end of the discharge port of the stirring cage 2, two rows of active carbon absorption groups which are arranged up and down are arranged in the pretreatment shell 23, each active carbon absorption group consists of a plurality of parallel hollow tubes 26, gears 27, bearing seats 25 and gear motors 24, the hollow tubes 26 are filled with active carbon, a plurality of through holes 28 are formed in the hollow tubes 26, the through holes 28 are provided with mesh plates 29, the aperture of each mesh plate 29 is smaller than the diameter of the active carbon, the hollow tubes 26 are connected with the pretreatment shell 23 through the bearing seats 25, the other ends of the hollow tubes 26 are connected with the gears 27, the gears 27 of the adjacent hollow tubes 26 are mutually meshed, one gear 27 is connected with the output shaft of the gear motors 24, the hollow pipes 26 of the two groups of active carbon absorption groups are vertical to each other; the reprocessing device comprises a reprocessing shell 17, a reprocessing shell feed inlet 18 of the reprocessing shell 17 is connected with an outlet at the lower end of the preprocessing shell, a horizontal plate type conveyor belt 16 is arranged in the reprocessing shell 17, through holes are formed in the surface of the plate type conveyor belt 16, two vertical partition plates 15 are arranged in the reprocessing shell 17, a channel through which the plate type conveyor belt 16 can pass is formed in each partition plate 15, the reprocessing shell 17 is divided into a left cavity, a middle cavity and a right cavity by the partition plates 15, the reprocessing shell feed inlet 18 is connected with the left cavity, a steam pipe 14 is arranged in the middle cavity, the steam pipe 14 is located in the middle of the plate type conveyor belt 16, a plurality of high-pressure spray heads 13 are arranged on the upper portion of the steam pipe 14, a plurality of heating pipes 10 are arranged in the right cavity, a discharge port 11 is formed in the lower end of the right cavity, a first exhaust port 3 is arranged on the upper portion of the right cavity, a first exhaust fan 4 is arranged on the first exhaust port 3, and the first exhaust port 3 is connected with an air purifying device. The invention adopts a system mode to treat the polluted soil, when the soil passes through the feeding device, the soil is transported by the stirring cage, and meanwhile, the soil is crushed, so that the diameter of soil particles is reduced as much as possible; when the soil passes through the pretreatment device, the soil is extruded through the hollow pipe under the action of the activated carbon absorption group, so that the soil is continuously crushed, and the crushed soil is contacted with the activated carbon to absorb harmful organic pollutants, thereby improving the treatment effect; after the soil is treated and loaded, heating organic pollutants in the soil through hot steam and moistening the soil to dissolve the water-soluble organic pollutants in water, heating the soil after the soil passes through the right cavity to evaporate the water and the organic pollutants together to finally obtain clean soil; the gas with the pollution evaporated is treated by a waste gas treatment device, and clean air is discharged and taken up, so that the environment is not polluted.
Specifically, the air purification apparatus of the present embodiment may be an existing industrial purifier, or may be configured such that the exhaust gas treatment tank 7 and the organic substance absorbent are connected to the air purification apparatus, the first exhaust port 3 is connected to one end of the exhaust pipe 5, the other end of the exhaust pipe 5 is inserted into the exhaust gas treatment tank 7 and is located below the liquid surface of the organic substance absorbent, and the exhaust gas treatment tank exhaust pipe 6 is provided at the upper end of the exhaust gas treatment tank 7. The structure has simple equipment and strong absorption capacity, air is fully contacted with the organic matter absorption liquid, harmful organic matter is fully absorbed, and exhaust gas is hardly polluted. The organic pollutants are evaporated by adopting dry air for treatment only through simple heating, so that the soil is prevented from being wet, the next step of treatment can be ensured to be carried out smoothly, and meanwhile, the soil is ensured to pass through the activated carbon absorption group smoothly.
Specifically, in order to further improve the pretreatment effect, an annular hot air pipe 19 is installed in the pretreatment shell 23 in this embodiment, a plurality of air outlet holes 30 are uniformly formed in the hot air pipe 19, the hot air pipe 19 is located at the lower part of the activated carbon absorption group, the hot air pipe 19 is connected with one end of an air inlet pipe 20, the other end of the air inlet pipe 20 is connected with an air inlet pump 22, and a heating wire 21 is wound around the periphery of the air inlet pipe 20; the upper end of the pretreatment shell 23 is provided with a second exhaust port 9, a second exhaust fan 8 is arranged at the second exhaust port 9, and the second exhaust port 9 is connected with an air purification device. Air is blown into the pretreatment shell 23 by the air inlet pump 22, the air is heated by the heating wire 21 in the air inlet pipe 20, high-temperature gas is contacted with soil to evaporate organic pollutants in the soil together, and hot air with the pollutants is sucked away by the second exhaust fan 8 and conveyed to the air purification device for purification treatment.
Further, in order to remove the soil on the plate conveyor 16 completely, a scraping plate 12 is disposed on the reprocessing shell 17 at the side of the discharge port 11, and the scraping plate 12 is matched with the lower end of the plate conveyor 16. Soil on the surface of the plate conveyor 16 can be scraped off by the scraper 12, and the scraped soil is directly discharged from the discharge port 11.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (4)
1. Contaminated soil heat treatment system, its characterized in that: comprises a feeding device, a pretreatment device, a reprocessing device and an air purification device; the feeding device is a stirring cage (2), and one end of the stirring cage (2) is provided with a stirring cage feeding hole (1); the pretreatment device comprises a pretreatment shell (23), the upper port of the pretreatment shell (23) is connected with the discharge port of the stirring cage (2), one side of the lower part of the discharge port of the stirring cage (2) is provided with a rotating motor (31), the output shaft of the rotating motor (31) is provided with a cutting knife (32), the cutting knife (32) is positioned at the lower end of the discharge port of the stirring cage (2), two rows of activated carbon absorption groups which are arranged up and down are arranged in the pretreatment shell (23), each activated carbon absorption group consists of a plurality of parallel hollow pipes (26), gears (27), bearing seats (25) and gear motors (24), the hollow pipes (26) are filled with activated carbon, a plurality of through holes (28) are formed in the hollow pipes (26), screen plates (29) are arranged on the through holes (28), the aperture of each screen plate (29) is smaller than the diameter of the activated carbon, the hollow pipes (26) are connected with the pretreatment shell (23) through the bearing seats (25), and the other ends of the hollow pipes (26) are connected with the gears (27), gears (27) of adjacent hollow pipes (26) are meshed with each other, one gear (27) is connected with an output shaft of a gear motor (24), and the hollow pipes (26) of the two groups of active carbon absorption groups are vertical to each other; the reprocessing device comprises a reprocessing shell (17), a reprocessing shell feed inlet (18) of the reprocessing shell (17) is connected with an outlet at the lower end of the preprocessing shell, a horizontal plate-type conveyor belt (16) is arranged in the reprocessing shell (17), through holes are formed in the surface of the plate-type conveyor belt (16), two vertical partition plates (15) are arranged in the reprocessing shell (17), a channel through which the plate-type conveyor belt (16) can pass is formed in each partition plate (15), the reprocessing shell (17) is divided into a left cavity, a middle cavity and a right cavity by the partition plates (15), the reprocessing shell feed inlet (18) is connected with the left cavity, a steam pipe (14) is arranged in the middle cavity, the steam pipe (14) is located in the middle of the plate-type conveyor belt (16), a plurality of high-pressure spray nozzles (13) are formed in the upper portion of the steam pipe (14), a plurality of heating pipes (10) are installed in the right cavity, and a discharge hole (11) is formed in the lower end of the right cavity, first exhaust port (3) are seted up on the upper portion of right side cavity, install first exhaust fan (4) on first exhaust port (3), and air purification device is connected in first exhaust port (3).
2. The contaminated soil thermal treatment system according to claim 1, wherein: air purification device by exhaust-gas treatment case (7) and organic matter absorption liquid, the one end of blast pipe (5) is connected in first exhaust port (3), the other end of blast pipe (5) inserts in exhaust-gas treatment case (7) and is located the liquid level lower part of organic matter absorption liquid, the upper end of exhaust-gas treatment case (7) is equipped with exhaust-gas treatment case blast pipe (6).
3. The contaminated soil heat treatment system according to claim 1 or 2, wherein: an annular hot air pipe (19) is arranged in the pretreatment shell (23), a plurality of air outlet holes (30) are uniformly formed in the hot air pipe (19), the hot air pipe (19) is positioned at the lower part of the activated carbon absorption group, the hot air pipe (19) is connected with one end of an air inlet pipe (20), the other end of the air inlet pipe (20) is connected with an air inlet pump (22), and heating wires (21) are wound on the periphery of the air inlet pipe (20); the upper end of the pretreatment shell (23) is provided with a second exhaust port (9), the second exhaust port (9) is provided with a second exhaust fan (8), and the second exhaust port (9) is connected with an air purification device.
4. The contaminated soil heat treatment system according to claim 1 or 2, wherein: and a scraping plate (12) is arranged on the reprocessing shell (17) at the side part of the discharge hole (11), and the scraping plate (12) is matched with the lower end of the plate-type conveyor belt (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610824316.1A CN106216374B (en) | 2016-09-18 | 2016-09-18 | Contaminated soil heat treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610824316.1A CN106216374B (en) | 2016-09-18 | 2016-09-18 | Contaminated soil heat treatment system |
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| CN106216374A CN106216374A (en) | 2016-12-14 |
| CN106216374B true CN106216374B (en) | 2022-05-17 |
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| CN201610824316.1A Active CN106216374B (en) | 2016-09-18 | 2016-09-18 | Contaminated soil heat treatment system |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109433813B (en) * | 2018-10-19 | 2021-08-03 | 山东志衡环境检测有限公司 | Soil remediation sampling device |
| CN112547775B (en) * | 2021-01-15 | 2022-11-22 | 安徽中青环保工程咨询有限公司 | Utilize equipment of steam extraction restoration soil |
| CN114602962B (en) * | 2022-01-20 | 2023-05-26 | 北京建工环境修复股份有限公司 | Heating unit, heating method and application of sequencing batch indirect thermal desorption repair system |
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| CN205289225U (en) * | 2015-12-14 | 2016-06-08 | 徐州工程学院 | Polycyclic aromatic hydrocarbons's intensive thermal desorption repair equipment in soil and deposit |
| CN206139637U (en) * | 2016-09-18 | 2017-05-03 | 滁州职业技术学院 | Contaminated soil heat treatment system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101045831B (en) * | 2007-05-06 | 2010-07-21 | 石磊 | Modification of common soil and production method of its compound elastomer product |
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2016
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2001239252A (en) * | 1999-12-22 | 2001-09-04 | Canon Inc | Method for cleaning polluted soil, device for cleaning polluted soil, chlorine-containing gas generator and polluted gas cracking device using this chlorine- containing gas generator |
| KR101060185B1 (en) * | 2011-04-14 | 2011-08-29 | 주식회사 윈텍에이티에스 | Thermal desorption type soil restore apparatus |
| CN102513343A (en) * | 2011-12-31 | 2012-06-27 | 北京鼎实环境工程有限公司 | Treatment system for repairing organics-contaminated soil |
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