CN110293124B - Integrated device for restoring farmland organic contaminated soil - Google Patents
Integrated device for restoring farmland organic contaminated soil Download PDFInfo
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- CN110293124B CN110293124B CN201910545491.0A CN201910545491A CN110293124B CN 110293124 B CN110293124 B CN 110293124B CN 201910545491 A CN201910545491 A CN 201910545491A CN 110293124 B CN110293124 B CN 110293124B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
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Abstract
The invention discloses an integrated device for restoring farmland organic contaminated soil, which mainly comprises a soil treatment device, a thermal desorption device and a waste gas treatment device; the soil treatment device is connected with the thermal desorption device through a pipeline, and the waste gas treatment device is respectively connected with the thermal desorption device and the soil treatment device through pipelines; the soil treatment device comprises a crushing shell, a crushing main shaft, a first crushing disc, a second crushing disc and a third crushing disc; the thermal desorption device comprises a heating pipe and a rotating main shaft; the waste gas treatment device comprises a device shell, an air inlet A, an air outlet A, an air inlet B and an air outlet B. Through the combined action of the soil treatment device, the thermal desorption device and the waste gas treatment device, the soil remediation efficiency is high, the energy is saved, the consumption is low, and the waste gas generated by thermal desorption can be effectively utilized in multiple ways.
Description
Technical Field
The invention relates to the technical field of agricultural non-point source treatment, in particular to an integrated device for restoring farmland organic polluted soil.
Background
Because of the stacking of agricultural and agricultural solid wastes of sludge and the wide use of pesticides, organic pollutants such as phthalate, polycyclic aromatic hydrocarbon, organic chlorine, organic phosphorus pesticide and the like directly or indirectly enter the soil environment, fat solubility is easy to be adsorbed by soil particles and remains in the soil for a long time, and the organic matters are carcinogenic, teratogenic or mutagenic substances which are remained in the soil, so that the organic pollutants can not only reduce the yield of crops and even stop the yield of the crops, but also can enter a food chain through plants or animals to bring serious influence to human survival and health, and therefore, the research and the development of the technology for repairing and treating the organic pollutants in the soil are hot spots of the current domestic and foreign environment protection research.
The agricultural non-point source pollution middle-field organic pollution soil pollution is always the central importance of agricultural non-point source pollution treatment, the quality of soil is concerned with the quality of plants, but the device integration level is low when the soil is treated in the prior art, the equipment is difficult to spread and input in a large range, and meanwhile, the thermal desorption efficiency of the equipment adopting thermal desorption treatment in the prior art is still lower, the soil is not fully stirred, the effect of the farmland organic pollution soil treatment is influenced by the conditions of uneven heating and the like, therefore, in order to improve the repair effect of the farmland organic pollution soil, a novel integrated device is needed to solve the problems.
Disclosure of Invention
In order to solve the technical problem, the invention provides an integrated device for restoring farmland organic polluted soil.
The invention has the technical scheme that the integrated device for restoring the farmland organic polluted soil mainly comprises a soil treatment device, a thermal desorption device and a waste gas treatment device; the soil treatment device is connected with the thermal desorption device through a pipeline, and the waste gas treatment device is respectively connected with the thermal desorption device and the soil treatment device through pipelines;
the thermal desorption device comprises a heating pipe and a rotating main shaft; the rotating main shaft is arranged at the central axis of the heating pipe, the left end and the right end of the rotating main shaft are rotationally connected with the heating pipe, the right end of the rotating main shaft is connected with an output shaft of a rotating motor, and the rotating motor is arranged on the right side surface of the heating pipe; the heating pipe comprises an outer heating pipe and an inner heating pipe; the left end and the right end of the heating inner tube are respectively rotatably connected with the inner wall of the heating outer tube through a rotating ring, the upper side of the left part of the heating outer tube is provided with a charging opening, the lower side of the right part of the heating outer tube is provided with a discharging opening, the upper end of the middle part of the heating outer tube is provided with an exhaust opening, and the positions of the heating inner tube, the charging opening and the discharging opening are respectively provided with a sealing slide rail;
the heating inner tube is connected with the inner wall of the heating outer tube through a plurality of groups of annular slide rails, a plurality of feeding holes are distributed on the circumferential wall at the position corresponding to the feeding port at equal intervals, a plurality of discharging holes are distributed on the circumferential wall at the position corresponding to the discharging port at equal intervals, a spiral material feeding sheet is distributed on the inner wall of the heating inner tube, a transmission gear ring is respectively arranged at the left part, the middle part and the right part of the inner wall of the heating inner tube, each transmission gear ring is respectively provided with one third of gear surface, the gear surfaces of each transmission gear ring are arranged in a staggered manner, a transmission gear block is respectively arranged on the rotating main shaft at the position corresponding to each transmission gear ring and respectively corresponds to the gear surface position of the transmission gear ring corresponding to the transmission gear block, a plurality of air outlet pipes are arranged on the inner wall of the heating inner tube at equal intervals, an air outlet, the upper end and the lower end of the air outlet control pipe are sealed, the upper end of the air outlet control pipe is provided with a baffle ring, the lower part of the air outlet control pipe is provided with an air inlet hole, a counterweight ring is sleeved at the position of the air outlet control pipe corresponding to the air inlet hole, the pipe wall of the upper part of the air outlet pipe is uniformly provided with first air holes, the pipe wall of the upper part of the air outlet control pipe is provided with second air holes, the first air holes and the second air holes,
the rotating main shaft is provided with a plurality of groups of heating rods, each heating rod is sleeved with a counterweight heat-conducting ring capable of sliding up and down, and the counterweight heat-conducting rings are connected with straight sliding rails arranged on two sides of each heating rod. Through the structural design of the thermal desorption device, the soil movement is carried out by utilizing the rotation of the heating inner pipe, and meanwhile, the thermal desorption power control of the thermal desorption device is realized only by rotating the motor by utilizing the matching action of the transmission gear block and the transmission gear ring, so that the thermal desorption device is easy to overhaul and maintain; in addition, the thermal desorption device keeps hot steam in the gap between the heating inner pipe and the heating outer pipe, plays a certain role in heat preservation and auxiliary heating for the heating pipe, effectively utilizes heat energy to improve the energy utilization rate, and is more energy-saving and environment-friendly; the thermal desorption device can be used for screening and crushing the soil again through the matching of the feeding opening and the feeding hole, effectively utilizes the extrusion force formed by the rotation of the heating inner pipe and the heating outer pipe, and improves the thermal desorption efficiency of the soil; meanwhile, the air outlet control pipe arranged in the thermal desorption device can effectively realize the purposes of advancing to the upper part of the heating pipe for exhausting and plugging the lower part of the heating pipe, effectively prevent soil from falling into the gap between the heating inner pipe and the heating outer pipe and effectively discharge waste gas generated in thermal desorption treatment to the gap between the heating inner pipe and the heating outer pipe; meanwhile, the heating rod of the thermal desorption device is provided with the counterweight heat-conducting ring, so that the thermal desorption efficiency can be effectively improved, and the counterweight heat-conducting ring is moved under the rotating action of the rotating main shaft, so that the auxiliary stirring effect on soil is realized, and the thermal desorption effect is enhanced.
Further, the soil treatment device comprises a crushing shell, a crushing main shaft, a first crushing disc, a second crushing disc and a third crushing disc; the crushing device comprises a crushing shell, a first crushing disc, a second crushing disc, a third crushing disc, a first driving motor, a second driving motor, a third driving motor, a second crushing disc, a third driving motor, a fourth driving motor, a fifth driving motor, a sixth driving;
three sieve pores are arranged on the first crushing disc, the second crushing disc and the third crushing disc at equal intervals, three groups of lower spiral rollers are arranged on the lower bottom surface of the first crushing disc at equal intervals, three groups of upper spiral rollers are arranged on the upper surface of the second crushing disc at equal intervals, three groups of lower spiral rollers are arranged on the lower bottom surface of the second crushing disc at equal intervals, three groups of upper spiral rollers are arranged on the upper surface of the third crushing disc at equal intervals, transmission rings are arranged at positions, corresponding to the upper spiral rollers and the lower spiral rollers, of the upper surfaces and the lower bottom surfaces of the first crushing disc, the second crushing disc and the third crushing disc, and the upper spiral rollers and the lower spiral rollers are connected with the transmission rings through transmission blocks;
the lower bottom surface of the transmission ring is provided with a conical tooth-shaped surface, and the left side surface and the right side surface of the transmission ring are provided with sliding chutes; the transmission block comprises a transmission block shell, a transmission bevel gear, a rotating bevel gear and a rotating block; the transmission bevel gear is fixed on the upper portion of the right side face in the transmission block shell through a rotating shaft, the rotating bevel gear penetrates through the center of the inner bottom face of the transmission block shell through the rotating shaft and is fixedly connected with the rotating block, the transmission bevel gear and the rotating bevel gear are in meshing transmission, a sliding rod is arranged on each of the left side and the right side of the upper end of the transmission block shell and is in matching connection with a sliding groove of the transmission ring, and the transmission bevel gear of the transmission block is in meshing transmission with a bevel gear face of the transmission. The soil treatment device provided by the invention can be used for crushing soil by utilizing the matching action of the first crushing disc, the second crushing disc and the third crushing disc, and simultaneously, the relative motion among the three crushing discs is converted into the rotating force of the lower spiral roller and the upper spiral roller by utilizing the transmission ring and the transmission block, so that the power source is simplified, and the difficulty in maintenance and repair of the device is reduced.
Furthermore, the first crushing disc, the second crushing disc and the third crushing disc which correspond to the sieve holes are respectively provided with an air distribution ring which is communicated with the interiors of the corresponding first crushing disc, second crushing disc and third crushing disc. According to the soil treatment device, the gas distribution rings are arranged at the sieve pores, the first crushing disc, the second crushing disc, the third crushing disc and the crushing main shaft are used for conveying thermal desorption waste gas to the gas distribution rings, and the gas distribution rings are used for assisting in dredging the sieve pores, so that the soil crushing effect is improved, and the soil is prevented from being accumulated to block the sieve pores.
Furthermore, the upper top surface of the transmission ring is respectively connected with the corresponding first crushing disc, the second crushing disc and the third crushing disc through a plurality of springs. Be provided with the cooperation that multiunit spring can effectual improvement transmission in-process, improve each broken dish pivoted stability.
Further, the waste gas treatment device comprises a device shell, an air inlet A, an air outlet A, an air inlet B and an air outlet B; the device comprises a device shell, a baffle plate, an air containing chamber, a purification chamber, an air inlet A port, an air outlet A port, an air inlet B port, an air outlet B port, a valve and a pressure valve, wherein the upper part of the left side surface of the device shell is provided with the air inlet A port and the air outlet A port, the middle part of the lower bottom surface of the device shell is provided with the air inlet B port, the upper part of the right side surface of the device shell is divided into a left part and a right part by the baffle plate, the left part and the right part are sequentially provided with the; the air inlet A and the air outlet A are respectively communicated with the air outlet and the air inlet of the soil treatment device through pipelines, and the air inlet A and the air outlet A are respectively connected with air pumps. The waste gas treatment device is divided into the gas containing chamber and the purification chamber, the gas containing chamber is effectively matched with the soil treatment device to convey waste gas, the waste gas treatment device is effectively utilized to maximize the utilization of the waste gas, and the soil remediation integrated device is more energy-saving and lower in consumption.
The purification device is characterized in that a purification support plate is arranged at the lower part of the purification chamber, a plurality of purification holes are uniformly distributed on the purification support plate, rotating blades are arranged at the purification holes, a purification pipe is correspondingly arranged on each purification hole, the purification pipes are rotationally connected with the purification holes, a plurality of inclined holes are arranged on the purification pipes at equal intervals, a net blocking pipe is sleeved outside each purification pipe, and active carbon is filled in a gap between the net blocking pipes. Utilize the structural design of purification support plate, waste gas rises and utilizes the rotating vane additional action to carry waste gas to the purge tube in, and effect through the inclined hole is discharged waste gas, utilizes exhaust gas flow thrust to make the purge tube rotate, and the active carbon of recycling packing adsorbs purification treatment, carries out waste gas purification through carrying out multiunit purge tube male mode in active carbon filling department, and is efficient, gives vent to anger stably.
Furthermore, the counterweight ring is made of stainless steel materials, and the circumference of the counterweight ring is arc-shaped; the air inlet hole is provided with a fine filter screen; the fine filter screen is 120 meshes. The circumference of the counterweight ring is designed in an arc shape, so that the air inlet hole can be effectively shielded, and the effect of assisting in enhancing and preventing soil from entering the air inlet hole is achieved.
Furthermore, damping rings are arranged on two sides of the straight sliding rail of the heating rod and comprise a ring A and a ring B, and the ring A and the ring B are connected through a plurality of groups of damping springs. Be provided with the damping ring can effectually reduce the impact of counter weight heat conduction ring to the heating rod, improve the stability of device operation, alleviate the noise of device operation simultaneously.
Further, the counterweight heat-conducting ring is a combined ring with an inner ring part being a copper ring and an outer ring part being a stainless steel ring. The design of inner and outer ring combination is adopted, so that the heat conduction is improved, and the counterweight effect also meets the requirement of the device.
The working method of the device comprises the following steps:
the method comprises the steps that soil to be repaired is put into a soil treatment device to be crushed, the soil to be repaired enters the soil treatment device through a feeding hole, the soil is enabled to sequentially pass through sieve holes to be subjected to soil extrusion crushing treatment through the rotation of a first crushing disc and a third crushing disc to perform relative motion with a second crushing disc, and during the period, the first crushing disc, the second crushing disc and the third crushing disc are mutually matched through a transmission ring and a transmission block when rotating, so that a lower spiral roller and an upper spiral roller corresponding to the transmission block rotate to assist in crushing; the rotating ring drives the transmission bevel gear to rotate through the bevel gear surface during rotation, and then the transmission bevel gear and the transmission bevel gear are meshed to drive the rotating block to rotate, so that the corresponding lower spiral roller or the corresponding upper spiral roller rotates; meanwhile, the soil treatment device pumps the waste gas in the waste gas treatment device into the gas inlet through the action of the air pump, so that the waste gas is conveyed through the crushing main shaft and each crushing disc, and the waste gas is sprayed out to sieve holes through the gas distribution ring for dredging;
the soil to be repaired enters the thermal desorption device through the discharge port after being treated by the soil treatment device for thermal desorption treatment, the rotating main shaft is rotated under the driving action of the rotating motor, the rotating main shaft drives each transmission gear block to rotate, then the heating inner tube is rotated along the annular slide rail and the sealing slide rail under the meshing action of the transmission gear blocks and the corresponding transmission gear rings, the soil to be repaired enters the thermal desorption device through the feed port, the soil to be repaired can be extruded with the inner wall of the heating outer tube through the feed hole for secondary crushing treatment due to the relative rotation of the heating inner tube and the heating outer tube, and then the soil falls into the heating inner tube and is conveyed to the right side through the spiral feeding piece, wherein the spiral feeding piece is a spiral piece attached to the inner wall of the heating inner tube; during the thermal desorption treatment of soil, the heating rod rotates along with the rotation of the rotating main shaft, the counterweight heat-conducting ring on the heating rod moves up and down along the straight slide rail under the action of gravity to perform auxiliary stirring and promote a heating contact surface, meanwhile, the air outlet pipe arranged on the pipe wall of the heating inner pipe rotates along with the rotation of the heating inner pipe during the rotation of the heating inner pipe, the air outlet control pipe moves up and down under the action of gravity to realize the opening and closing of the air outlet pipe, hot waste gas generated in the thermal desorption treatment process is discharged to a gap between the heating inner pipe and the heating outer pipe to realize the heat preservation and auxiliary heating action on the heating inner pipe, and finally, the repaired soil is discharged through the discharge hole and the discharge port in sequence to obtain the repaired soil;
waste gas that produces during thermal desorption handles gets into exhaust treatment device through the gas vent, the tolerance of keeping somewhere waste gas between effect control heating inner tube and the heating outer tube space through pressure valve and valve, discharge it into exhaust treatment device in through admitting air B mouth when tolerance is too high, exhaust treatment device's admit air A mouth, it carries out the air guide with the air pump effect with soil treatment device to give vent to anger A mouth, exhaust treatment device makes waste gas get into in the purifying tube through each purification hole and the rotation leaf effect of purification support plate, the inclined hole effect through the purifying tube makes the purifying tube rotate along the slip ring of bottom, purification treatment through active carbon, waste gas discharges through giving vent to anger B mouth after will handling.
The invention has the beneficial effects that:
(1) the integrated device has high equipment integration degree, is easy to quickly put into use polluted soil, has high soil remediation efficiency through the combined action of the soil treatment device, the thermal desorption device and the waste gas treatment device, saves energy and consumes low energy, and can effectively utilize the waste gas generated by thermal desorption in multiple effects.
(2) According to the structural design of the thermal desorption device, the soil motion is carried out by utilizing the rotation of the heating inner pipe, and meanwhile, the thermal desorption power control of the thermal desorption device is realized only by rotating the motor by utilizing the matching effect of the transmission gear block and the transmission gear ring, so that the thermal desorption device is easy to overhaul and maintain; and keep somewhere of hot steam through the clearance of heating inner tube and heating outer tube, play certain heat preservation and auxiliary heating's effect to the heating pipe, effectual get up heat utilization and improve energy utilization and rate, it is more energy-concerving and environment-protective.
(3) The soil treatment device provided by the invention can be used for crushing soil by utilizing the matching effect of the first crushing disc, the second crushing disc and the third crushing disc, and simultaneously, the relative motion among the three crushing discs is converted into the rotating force of the lower spiral roller and the upper spiral roller by utilizing the transmission ring and the transmission block, so that the power source is simplified, the difficulty of maintenance and repair of the device is reduced, and meanwhile, the gas distribution ring is used for dredging sieve pores by utilizing waste gas, so that the condition that the sieve pores are blocked by soil is reduced.
(4) The waste gas treatment device is divided into the gas containing chamber and the purification chamber, the gas containing chamber is effectively matched with the soil treatment device to convey waste gas, the waste gas treatment device is effectively utilized to maximize the utilization of the waste gas, the soil remediation integrated device is more energy-saving and low-consumption, the waste gas is purified in a mode that a plurality of groups of purification pipes are inserted into the activated carbon filling position, the efficiency is high, and the gas outlet is stable.
Drawings
Fig. 1 is a schematic view of the overall structure of the integrated device of the present invention.
Fig. 2 is a schematic view showing the structure of the soil treatment apparatus of the present invention.
Fig. 3 is a cross-sectional top view at a-a of fig. 2.
Fig. 4 is a partially enlarged view of fig. 2 at F.
Fig. 5 is a schematic structural view of the thermal desorption apparatus of the present invention.
Fig. 6 is a sectional view at B-B of fig. 5.
Fig. 7 is a cross-sectional view at C-C of fig. 5.
Fig. 8 is a cross-sectional view at D-D of fig. 5.
Fig. 9 is a partial enlarged view at G of fig. 5.
Fig. 10 is a partial enlarged view of fig. 5 at H.
Fig. 11 is a schematic structural view of an exhaust gas treatment device of the present invention.
Fig. 12 is a cross-sectional top view at E-E of fig. 11.
Wherein, 1-a soil treatment device, 11-a crushing shell, 12-a crushing main shaft, 13-a first crushing disk, 14-a second crushing disk, 15-a third crushing disk, 16-a feed inlet, 17-a discharge outlet, 18-an air outlet, 19-an air inlet, 2-a thermal desorption device, 21-a rotating main shaft, 22-a rotating motor, 23-a transmission gear block, 24-a heating rod, 25-a counterweight heat conduction ring, 26-a straight slide rail, 27-a damping ring, 271-A ring, 272-B ring, 273-a damping spring, 3-a waste gas treatment device, 31-a device shell, 32-an air inlet A port, 33-an air outlet A port, 34-an air inlet B port, 35-an air outlet B port, 36-a partition plate, 37-a valve, 38-pressure valve, 4-heating pipe, 41-heating outer pipe, 411-charging opening, 412-discharging opening, 413-exhaust opening, 414-annular slide rail, 42-heating inner pipe, 421-feeding opening, 422-discharging opening, 423-spiral feeding piece, 424-transmission gear ring, 425-air outlet pipe, 4251-first air hole, 426-air outlet control pipe, 4261-second air hole, 427-baffle ring, 428-air inlet hole, 429-counterweight ring, 43-rotating ring, 44-sealing slide rail, 5-annular driving motor, 6-sieve hole, 61-lower spiral roller, 62-upper spiral roller, 63-air distribution ring, 7-transmission ring, 71-conical tooth profile, 72-chute, 73-spring, 8-transmission block, 81-transmission block shell, 82-transmission bevel gear, 83-rotation bevel gear, 84-rotation block, 85-sliding rod, 9-purification carrier plate, 91-purification hole, 92-rotation blade, 93-purification pipe, 94-inclined hole and 95-mesh blocking pipe.
Detailed Description
As shown in fig. 1, an integrated device for remedying farmland organic contaminated soil mainly comprises a soil treatment device 1, a thermal desorption device 2 and a waste gas treatment device 3; the soil treatment device 1 is connected with the thermal desorption device 2 through a pipeline, and the waste gas treatment device 3 is respectively connected with the thermal desorption device 2 and the soil treatment device 1 through pipelines;
as shown in fig. 2 and 3, the soil treatment device 1 includes a crushing shell 11, a crushing main shaft 12, a first crushing disk 13, a second crushing disk 14, and a third crushing disk 15; a feeding hole 16 is formed in the upper top surface of the crushing shell 11, a discharging hole 17 is formed in the left portion of the lower bottom surface of the crushing shell 11, an air outlet 18 is formed in the right side surface of the upper portion of the crushing shell 11, an air inlet 19 is formed in the center of the lower bottom surface of the crushing shell 11, the crushing main shaft 12 is located in the central axis of the crushing shell 11, a first crushing disc 13, a second crushing disc 14 and a third crushing disc 15 are sequentially arranged on the crushing main shaft 12 from top to bottom, the first crushing disc 13 and the third crushing disc 15 are connected with the crushing main shaft 12 through an annular driving motor 5, the second crushing disc 14 is fixedly connected with the crushing main shaft 12, the first crushing disc 13, the second crushing disc 14, the third crushing disc 15 and the crushing main shaft 12 are hollow, and the lower end of;
as shown in fig. 2 and 3, three sieve holes 6 are arranged on the first crushing disc 13, the second crushing disc 14 and the third crushing disc 15 at equal intervals, three groups of lower spiral rollers 61 are arranged on the lower bottom surface of the first crushing disc 13 at equal intervals, three groups of upper spiral rollers 62 are arranged on the upper surface of the second crushing disc 14 at equal intervals, three groups of lower spiral rollers 61 are arranged on the lower bottom surface of the second crushing disc 14 at equal intervals, three groups of upper spiral rollers 62 are arranged on the upper surface of the third crushing disc 15 at equal intervals, transmission rings 7 are arranged at positions, corresponding to the upper spiral rollers 62 and the lower spiral rollers 61, of the upper surface and the lower bottom surface of the first crushing disc 13, the second crushing disc 14 and the third crushing disc 15, and the upper spiral rollers 62 and the lower spiral rollers 61 are both connected with the transmission rings 7 through transmission blocks 8; the first crushing disc 13, the second crushing disc 14 and the third crushing disc 15 at the corresponding positions of the sieve holes 6 are respectively provided with an air distribution ring 63 which is communicated with the interiors of the corresponding first crushing disc 13, second crushing disc 14 and third crushing disc 15. According to the soil treatment device 1, the gas distribution ring 63 is arranged at the sieve pore 6, the thermal desorption waste gas is conveyed to the gas distribution ring 63 by utilizing the first crushing disc 13, the second crushing disc 14, the third crushing disc 15 and the crushing main shaft 12, the sieve pore 6 is subjected to auxiliary dredging through the gas distribution ring 63, the soil crushing effect is improved, and the sieve pore 6 is prevented from being blocked by soil accumulation.
As shown in fig. 2 and 4, the lower bottom surface of the driving ring 7 is provided with a conical tooth surface 71, and the left and right side surfaces of the driving ring 7 are provided with sliding grooves 72; the transmission block 8 comprises a transmission block shell 81, a transmission bevel gear 82, a rotating bevel gear 83 and a rotating block 84; the transmission bevel gear 81 is fixed on the upper part of the inner right side surface of the transmission block shell 81 through a rotating shaft, the rotation bevel gear 82 penetrates through the center of the inner bottom surface of the transmission block shell 81 through the rotating shaft and is fixedly connected with the rotating block 84, the transmission bevel gear 82 and the rotation bevel gear 83 are in meshing transmission, the left side and the right side of the upper end of the transmission block shell 81 are respectively provided with a sliding rod 85 which is in matching connection with the sliding groove 72 of the transmission ring 7, and the transmission bevel gear 82 of the transmission block 8 is in meshing transmission with the conical tooth surface 71 of. The upper top surface of the driving ring 7 is connected to its corresponding first 13, second 14 and third 15 crushing discs by a plurality of springs 73. The arrangement of the plurality of groups of springs 73 can effectively improve the matching in the transmission process and improve the rotating stability of each crushing disc 14. The soil treatment device 1 provided by the invention can be used for crushing soil by utilizing the matching action of the first crushing disc 13, the second crushing disc 14 and the third crushing disc 15, and simultaneously, the relative motion among the three crushing discs is converted into the rotating force of the lower spiral roller 61 and the upper spiral roller 62 by utilizing the transmission ring 7 and the transmission block 8, so that the power source is simplified, and the difficulty of maintenance and overhaul of the device is reduced.
As shown in fig. 5, the thermal desorption device 2 includes a heating pipe 4 and a rotating main shaft 21; the rotating main shaft 21 is arranged at the central axis of the heating pipe 4, the left end and the right end of the rotating main shaft are rotatably connected with the heating pipe 4, the right end of the rotating main shaft 21 is connected with an output shaft of a rotating motor 22, and the rotating motor 22 is arranged on the right side surface of the heating pipe 4; the heating pipe 4 includes a heating outer pipe 41 and a heating inner pipe 42; the left end and the right end of the heating inner tube 42 are respectively rotatably connected with the left inner wall and the right inner wall of the corresponding heating outer tube 41 through a rotating ring 43, the upper side of the left part of the heating outer tube 41 is provided with a feeding port 411, the lower side of the right part of the heating outer tube 41 is provided with a discharging port 412, the upper end of the middle part of the heating outer tube 41 is provided with an exhaust port 413, and the positions of the heating inner tube 42 corresponding to the feeding port 411 and the discharging port 412 are respectively provided with a sealing slide;
as shown in fig. 5, 6, 7 and 8, the heating inner tube 42 is connected with the inner wall of the heating outer tube 41 through a plurality of sets of annular slide rails 414, a plurality of feeding holes 421 are equidistantly distributed on the circumferential wall at the position corresponding to the feeding port 411 of the heating inner tube 42, a plurality of discharging holes 422 are equidistantly distributed on the circumferential wall at the position corresponding to the discharging port 412 of the heating inner tube 42, spiral feeding pieces 423 are distributed on the inner wall of the heating inner tube 42, a transmission toothed ring 424 is respectively arranged at the left part, the middle part and the right part of the inner wall of the heating inner tube 42, each transmission toothed ring 424 is provided with one third of the toothed surfaces, the toothed surfaces of each transmission toothed ring 424 are arranged in a staggered manner, one transmission toothed block 23 is respectively arranged at the position corresponding to each transmission toothed ring 424 on the main rotating shaft 21, and is respectively corresponding to the toothed surface of the transmission toothed ring 424 corresponding thereto, a plurality of air outlet pipes 425 are equidistantly arranged on the inner wall of the heating, the air outlet control tube 426 is hollow, the upper end and the lower end of the air outlet control tube 426 are sealed, the upper end of the air outlet control tube 426 is provided with a baffle ring 427, the lower part of the air outlet control tube 426 is provided with an air inlet 428, a matching ring 429 is sleeved at the position, corresponding to the air inlet 428, of the air outlet control tube 426, the upper tube wall of the air outlet tube 425 is uniformly provided with first air holes 4251, the upper tube wall of the air outlet control tube 426 is provided with second air holes 4261, the first air holes 4251 and the second air holes 4261 are arranged in a staggered mode, the matching ring 429 is made of stainless steel, and the; the air inlet holes 428 are provided with fine filter screens; the fine filter screen is 120 meshes. The circumference of the counterweight ring 429 is designed to be arc-shaped, so that the air inlet holes 428 can be effectively shielded, and the effect of assisting in enhancing and preventing soil from entering the air inlet holes 428 is achieved.
As shown in fig. 5, the rotating spindle 21 is provided with a plurality of groups of heating rods 24, as shown in fig. 10, each heating rod 24 is sleeved with a counterweight heat-conducting ring 25 capable of sliding up and down, and the counterweight heat-conducting ring 25 is connected with straight slide rails 26 arranged on two sides of the heating rod 24. Damping rings 27 are arranged on two sides of the straight sliding rail 26 of the heating rod 24, the damping rings 27 comprise an A ring 271 and a B ring 272, and the A ring 271 and the B ring 272 are connected through a plurality of groups of damping springs 273. The shock absorption ring 27 is arranged, so that the impact force of the counterweight heat conduction ring 25 on the heating rod 24 can be effectively reduced, the running stability of the device is improved, and the running noise of the device is reduced. The counterweight heat-conducting ring 25 is specifically a combined ring with an inner ring part being a copper ring and an outer ring part being a stainless steel ring. The design of inner and outer ring combination is adopted, so that the heat conduction is improved, and the counterweight effect also meets the requirement of the device. Through the structural design of the thermal desorption device 2, the soil movement is carried out by utilizing the rotation of the heating inner tube 42, and meanwhile, the thermal desorption power control of the thermal desorption device 2 is realized only by rotating the motor 22 by utilizing the matching action of the transmission toothed block 23 and the transmission toothed ring 424, so that the thermal desorption device is easy to overhaul and maintain; in addition, the thermal desorption device 2 keeps hot steam in the gap between the heating inner tube 42 and the heating outer tube 41, plays a certain role in heat preservation and auxiliary heating for the heating tube 4, effectively utilizes heat energy to improve the energy utilization rate, and is more energy-saving and environment-friendly; according to the thermal desorption device 2, the soil can be sieved and crushed again through the matching of the feeding opening 411 and the feeding hole 421, the extrusion force formed by the rotation of the heating inner tube 42 and the rotation of the heating outer tube 41 is effectively utilized, and the thermal desorption efficiency of the soil is improved; meanwhile, the air outlet control pipe 426 arranged in the thermal desorption device 2 can effectively realize the purposes of advancing to the upper part of the heating pipe 4 for air exhaust and plugging the lower part, effectively prevents soil from falling into the gap between the heating inner pipe 42 and the heating outer pipe 41 and effectively exhausts waste gas generated in thermal desorption treatment to the gap between the heating inner pipe 42 and the heating outer pipe 41; meanwhile, the heating rod 24 of the thermal desorption device 2 is provided with the counterweight heat-conducting ring 25, so that the thermal desorption efficiency can be effectively improved, and the counterweight heat-conducting ring 25 moves under the rotating action of the rotating main shaft 21, so that the auxiliary stirring effect on soil is realized, and the thermal desorption effect is enhanced.
As shown in fig. 11, the exhaust gas treatment device 3 includes a device case 31, an inlet a port 32, an outlet a port 33, an inlet B port 34, and an outlet B port 35; the upper part of the left side surface of the device shell 31 is provided with an air inlet A port 32 and an air outlet A port 33, the middle part of the lower bottom surface of the device shell 31 is provided with an air inlet B port 34, the upper part of the right side surface of the device shell 31 is provided with an air outlet B port 35, the inside of the device shell 31 is divided into a left part and a right part by a partition plate 36, the left part and the right part are sequentially provided with an air containing chamber and a purifying chamber from left to right, the air inlet B port 34 is respectively communicated with the air containing chamber and the purifying chamber, the air inlet B port 34 is provided with a valve 37 and a pressure valve 38; the air inlet A32 and the air outlet A33 are respectively communicated with the air outlet 18 and the air inlet 19 of the soil treatment device 1 through pipelines, and the air inlet A32 and the air outlet A33 are both connected with air pumps in a matching mode. The waste gas treatment device 3 is divided into a gas containing chamber and a purifying chamber, the gas containing chamber is effectively matched with the soil treatment device 1 to convey waste gas, the waste gas treatment device 3 is effectively utilized to maximize the utilization of the waste gas, and the soil remediation integrated device is more energy-saving and lower in consumption.
As shown in fig. 11 and 12, a purification support plate 9 is disposed at the lower portion of the purification chamber, a plurality of purification holes 91 are uniformly distributed on the purification support plate 9, rotating blades 92 are disposed at the purification holes 91, a purification tube 93 is correspondingly disposed on each purification hole 91, the purification tubes 93 are rotatably connected with the purification holes 91, a plurality of inclined holes 94 are disposed on the purification tubes 93 at equal intervals, a net blocking tube 95 is sleeved outside each purification tube 93, and activated carbon is filled in a gap between the net blocking tubes 95. Utilize the structural design of purification support plate 9, waste gas rises and utilizes the auxiliary action of rotating vane 92 to carry waste gas to the purge tube 93 in, discharges waste gas through the effect of inclined hole 94, utilizes exhaust air flow thrust to make the purge tube 93 rotate, and the active carbon of recycling packing carries out absorption purification treatment, carries out waste gas purification through carrying out multiunit purge tube 93 male mode in active carbon filling department, and is efficient, gives vent to anger stably.
The working method of the device comprises the following steps:
soil to be restored is put into the soil processing device 1 to be crushed, the soil to be restored enters the soil processing device 1 through the feeding hole 16, the soil is extruded and crushed through the sieve holes 6 by the relative motion of the first crushing disc 13 and the third crushing disc 15 and the second crushing disc 14, and the lower spiral roller 61 and the upper spiral roller 62 corresponding to the transmission block 8 are rotated to assist in crushing through the mutual matching of the transmission ring 7 and the transmission block 8 when the first crushing disc 13, the second crushing disc 14 and the third crushing disc 15 rotate; the rotating ring 7 drives the transmission bevel gear 82 to rotate through the bevel gear surface 71 during rotation, and then the transmission bevel gear 82 and the rotating bevel gear 83 are meshed for transmission to enable the rotating block 84 to rotate, so that the corresponding lower spiral roller 61 or the corresponding upper spiral roller 62 rotates; meanwhile, the soil treatment device 1 pumps the waste gas in the waste gas treatment device 3 into the gas inlet 19 through the action of the air pump, then the waste gas is conveyed through the crushing main shaft 12 and each crushing disc, and the waste gas is sprayed out to the sieve pores 6 through the gas distribution ring 63 for dredging;
after being treated by the soil treatment device 1, soil to be repaired enters the thermal desorption device 2 through the discharge hole 17 for thermal desorption treatment, the rotating main shaft 21 is rotated under the driving action of the rotating motor 22, the rotating main shaft 21 drives each transmission gear block 23 to rotate, then the heating inner tube 42 is rotated along the annular slide rail 414 and the sealing slide rail 44 under the meshing action of the transmission gear blocks 23 and the corresponding transmission gear rings 424, the soil to be repaired enters the thermal desorption device 2 through the feed opening 411, and due to the relative rotation of the heating inner tube 42 and the heating outer tube 41, the soil to be repaired can be extruded through the feed hole 421 and the inner wall of the heating outer tube 41 for secondary crushing treatment, and then falls into the heating inner tube 42 and is conveyed to the right through the spiral material conveying piece 423, wherein the spiral material conveying piece 423 is a spiral piece attached to the inner wall of the heating inner tube 42; during the thermal desorption treatment of soil, the heating rod 24 rotates along with the rotation of the main rotating shaft 21 continuously, the counterweight heat-conducting ring 25 on the heating rod 24 moves up and down along the straight slide rail 26 under the action of gravity to perform auxiliary stirring on the soil and promote a heating contact surface, meanwhile, the air outlet pipe 425 arranged on the pipe wall of the heating inner pipe 42 also rotates along with the rotation of the heating inner pipe 42 during the rotation of the heating inner pipe, the air outlet control pipe 426 moves up and down under the action of gravity to open and close the air outlet pipe 425, hot waste gas generated in the thermal desorption treatment process is discharged to a gap between the heating inner pipe 42 and the heating outer pipe 41 to realize the heat preservation and auxiliary heating effects on the heating inner pipe 42, and finally, the repaired soil is discharged through the discharge hole 422 and the discharge port 412 in sequence;
the waste gas generated during the thermal desorption treatment enters the waste gas treatment device 3 through the exhaust port 413, the gas amount of the waste gas left between the heating inner tube 42 and the heating outer tube 41 is controlled through the action of the pressure valve 38 and the valve 37, when the gas amount is too high, the waste gas is discharged into the waste gas treatment device 3 through the gas inlet B port 34, the gas inlet A port 32 and the gas outlet A port 33 of the waste gas treatment device 3 conduct gas with the soil treatment device 1 under the action of a gas pump, the waste gas treatment device 3 enables the waste gas to enter the purification tube 93 through the action of each purification hole 91 and the rotating blade 92 of the purification carrier plate 9, the purification tube 93 rotates along the sliding ring at the bottom through the action of the inclined hole 94 of the purification tube 93, and the treated waste gas is discharged through the gas outlet B port 35 through the purification treatment of activated carbon.
Farmland organic contaminated soil remediation experiment
Selecting farmland soil samples (the content of soil pollutants VOCs (benzene) is 470mg/kg, the content of soil pollutants VOCs (dimethylbenzene) is 530mg/kg) in the region, randomly equally dividing the samples into two parts, respectively adopting the integrated device and the conventional soil remediation device (the patent CN206676909U device) to carry out experiments, and respectively recording the experiments as an experiment group and a control group, wherein the results are as follows:
experimental groups: after the remediation treatment, the content of soil pollutants VOCs (benzene) in the discharged soil is 0.6mg/kg, and the removal rate of VOCs (benzene) is 99.87%; the content of soil pollutants VOCs (dimethylbenzene) is 1.12mg/kg, and the removal rate of the VOCs (dimethylbenzene) is 99.79 percent;
control group: after the remediation treatment, the content of soil pollutants VOCs (benzene) in the discharged soil is 12.73mg/kg, and the removal rate of the VOCs (benzene) is 97.29 percent; the content of soil pollutants VOCs (dimethylbenzene) is 23.44mg/kg, and the removal rate of the VOCs (dimethylbenzene) is 95.58 percent;
and (4) conclusion: therefore, the removal rate of the experimental group in the removal of the VOCs (benzene) and the VOCs (xylene) is far higher than that of the control group, so that the integrated device has a better repairing effect on the farmland organic polluted soil and a stronger purifying effect on the farmland organic polluted soil.
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 (9)
1. An integrated device for restoring farmland organic contaminated soil is characterized by mainly comprising a soil treatment device (1), a thermal desorption device (2) and a waste gas treatment device (3); the soil treatment device (1) is connected with the thermal desorption device (2) through a pipeline, and the waste gas treatment device (3) is respectively connected with the thermal desorption device (2) and the soil treatment device (1) through pipelines;
the thermal desorption device (2) comprises a heating pipe (4) and a rotating main shaft (21); the rotating main shaft (21) is arranged at the central axis of the heating pipe (4), the left end and the right end of the rotating main shaft are rotatably connected with the heating pipe (4), the right end of the rotating main shaft (21) is connected with an output shaft of a rotating motor (22), and the rotating motor (22) is arranged on the right side surface of the heating pipe (4); the heating pipe (4) comprises an outer heating pipe (41) and an inner heating pipe (42); the left end and the right end of the heating inner pipe (42) are respectively rotatably connected with the inner wall of the heating outer pipe (41) through a rotating ring (43), the upper side of the left part of the heating outer pipe (41) is provided with a feeding opening (411), the lower side of the right part of the heating outer pipe (41) is provided with a discharging opening (412), the upper end of the middle part of the heating outer pipe (41) is provided with an exhaust opening (413), and the positions of the heating inner pipe (42) corresponding to the feeding opening (411) and the discharging opening (412) are respectively provided with a sealing slide rail (44;
heating inner tube (42) pass through multiunit annular slide rail (414) and heating outer tube (41) inner wall connection, heating inner tube (42) and the equidistant distribution of circumference wall of charge door (411) position department of correspondence have a plurality of pan feeding holes (421), heating inner tube (42) and equidistant distribution of circumference wall of bin outlet (412) position department of correspondence have a plurality of relief holes (422), heating inner tube (42) inner wall cloth has spiral to send tablet (423), the left part, middle part, the right part of heating inner tube (42) inner wall respectively are equipped with a transmission ring gear (424), every transmission ring gear (424) respectively is equipped with the third flank of tooth, and the flank of every transmission ring gear (424) sets up in a staggered way, rotation main shaft (21) are gone up and are equipped with a transmission tooth piece (23) respectively with every transmission ring gear (424) position department of correspondence, and correspond rather than the flank of the transmission ring gear (424) position respectively, a plurality of air outlet pipes (425) are arranged on the inner wall of the heating inner pipe (42) at equal intervals, an air outlet control pipe (426) capable of moving up and down is arranged in the air outlet pipe (425), the air outlet control pipe (426) is hollow, the upper end and the lower end of the air outlet control pipe (426) are sealed, a baffle ring (427) is arranged at the upper end of the air outlet control pipe, an air inlet hole (428) is arranged at the lower part of the air outlet control pipe (426), a counterweight ring (429) is sleeved at the position where the air outlet control pipe (426) corresponds to the air inlet hole (428), first air holes (4251) are uniformly arranged on the upper pipe wall of the air outlet pipe (425), second air holes (4261) are arranged on the upper pipe wall of the air outlet control pipe (426), and the,
the rotating main shaft (21) is provided with a plurality of groups of heating rods (24), each heating rod (24) is sleeved with a counterweight heat-conducting ring (25) capable of sliding up and down, and the counterweight heat-conducting rings (25) are connected with straight slide rails (26) arranged on two sides of each heating rod (24).
2. The integrated device for remediating organically-polluted farmland soil as claimed in claim 1, wherein the soil treatment device (1) comprises a crushing shell (11), a crushing main shaft (12), a first crushing disk (13), a second crushing disk (14), a third crushing disk (15); a feed inlet (16) is arranged on the upper top surface of the crushing shell (11), a discharge outlet (17) is arranged at the left part of the lower bottom surface of the crushing shell (11), an air outlet (18) is arranged on the right side surface of the upper part of the crushing shell (11), an air inlet (19) is arranged at the center of the lower bottom surface of the crushing shell (11), the crushing main shaft (12) is positioned at the central axis in the crushing shell (11), the first crushing disc (13), the second crushing disc (14) and the third crushing disc (15) are sequentially arranged on the crushing main shaft (12) from top to bottom, the first crushing disc (13), the third crushing disc (15) and the crushing main shaft (12) are connected through an annular driving motor (5), the second crushing disc (14) is fixedly connected with the crushing main shaft (12), the first crushing disc (13), the second crushing disc (14), the third crushing disc (15) and the crushing main shaft (12) are hollow, and the lower end of the crushing main shaft (12) is communicated with the air inlet (19);
three sieve holes (6) are arranged on the first crushing disc (13), the second crushing disc (14) and the third crushing disc (15) at equal intervals, three groups of lower spiral rollers (61) are arranged on the lower bottom surface of the first crushing disc (13) at equal intervals, three groups of upper spiral rollers (62) are arranged on the upper surface of the second crushing disc (14) at equal intervals, three groups of lower spiral rollers (61) are arranged on the lower bottom surface of the second crushing disc (14) at equal intervals, three groups of upper spiral rollers (62) are arranged on the upper surface of the third crushing disc (15) at equal intervals, transmission rings (7) are arranged at positions, corresponding to the upper spiral rollers (62) and the lower spiral rollers (61), of the upper surface and the lower bottom surface of the first crushing disc (13), the second crushing disc (14) and the third crushing disc (15), and the upper spiral rollers (62) and the lower spiral rollers (61) are connected with the transmission rings (7) through transmission blocks (8);
the lower bottom surface of the transmission ring (7) is provided with a conical tooth surface (71), and the left side surface and the right side surface of the transmission ring (7) are provided with sliding grooves (72); the transmission block (8) comprises a transmission block shell (81), a transmission bevel gear (82), a rotating bevel gear (83) and a rotating block (84); the transmission bevel gear (81) is fixed on the upper portion of the inner right side face of the transmission block shell (81) through a rotating shaft, the rotation bevel gear (82) penetrates through the center of the inner bottom face of the transmission block shell (81) through the rotating shaft and is fixedly connected with the rotating block (84), the transmission bevel gear (82) and the rotation bevel gear (83) are in meshing transmission, the left side and the right side of the upper end of the transmission block shell (81) are respectively provided with a sliding rod (85) which is in matching connection with a sliding groove (72) of the transmission ring (7), and the transmission bevel gear (82) of the transmission block (8) is in meshing transmission with a conical tooth face (71) of the transmission ring (7).
3. The integrated device for remediating organically-polluted farmland soil as claimed in claim 2, wherein the first crushing disk (13), the second crushing disk (14) and the third crushing disk (15) at the positions corresponding to the sieve holes (6) are respectively provided with an air distribution ring (63) and are communicated with the interiors of the corresponding first crushing disk (13), second crushing disk (14) and third crushing disk (15).
4. The integrated device for remediating organically-polluted farmland soil as claimed in claim 2, wherein the upper top surface of the transmission ring (7) is connected with the corresponding first crushing disk (13), second crushing disk (14) and third crushing disk (15) through a plurality of springs (73).
5. The integrated device for remediating organically-polluted farmland soil as claimed in claim 1, wherein the exhaust gas treatment device (3) comprises a device housing (31), an air inlet A port (32), an air outlet A port (33), an air inlet B port (34), and an air outlet B port (35); the device is characterized in that an air inlet A port (32) and an air outlet A port (33) are arranged on the upper portion of the left side surface of the device shell (31), an air inlet B port (34) is arranged in the middle of the lower bottom surface of the device shell (31), an air outlet B port (35) is arranged on the upper portion of the right side surface of the device shell (31), the device shell (31) is divided into a left part and a right part by a partition plate (36), an air containing chamber and a purifying chamber are sequentially arranged from left to right, the air inlet B port (34) is respectively communicated with the air containing chamber and the purifying chamber, a valve (37) and a pressure valve (38) are arranged at the air inlet B port (34), and the pressure valve is used for monitoring the pressure of; the air inlet A port (32) and the air outlet A port (33) are communicated with an air outlet (18) and an air inlet (19) of the soil treatment device (1) through pipelines respectively, and the air inlet A port (32) and the air outlet A port (33) are connected with air pumps in a matching mode.
6. The integrated device for remediating organically-polluted farmland soil as claimed in claim 1, wherein the counterweight ring (429) is made of stainless steel, and the circumference of the counterweight ring (429) is arc-shaped; the air inlet holes (428) are provided with fine filter screens; the fine filter screen is 120 meshes.
7. The integrated device for remediating organically-polluted farmland soil as claimed in claim 1, wherein damping rings (27) are arranged on two sides of the straight slide rail (26) of the heating rod (24), the damping rings (27) comprise an A ring (271) and a B ring (272), and the A ring (271) and the B ring (272) are connected through a plurality of groups of damping springs (273).
8. The integrated device for remediating organically-polluted farmland soil as recited in claim 1, wherein the air intake holes (428) are provided with a 120-mesh fine screen.
9. The integrated device for remediating organically-polluted farmland soil as claimed in claim 1, wherein the counterweight heat-conducting ring (25) is a combined ring having an inner ring portion of a copper ring and an outer ring portion of a stainless steel ring.
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| CN112108513B (en) * | 2020-09-07 | 2022-03-08 | 生态环境部南京环境科学研究所 | Thermal desorption device and method for treating contaminated soil |
| CN113182342B (en) * | 2021-05-19 | 2022-07-19 | 山西八建集团有限公司 | Thermal desorption prosthetic devices who pollutes soil |
| CN114368769B (en) * | 2021-12-08 | 2023-07-28 | 生态环境部华南环境科学研究所 | Production device and production method for preparing calcium aluminate by activating, rotating and melting aluminum ash |
| CN114515524A (en) * | 2021-12-27 | 2022-05-20 | 重庆中天海智生态环境科技有限公司 | Soil remediation thermal desorption equipment and process thereof |
| CN115254372B (en) * | 2022-09-27 | 2022-11-29 | 生态环境部华南环境科学研究所(生态环境部生态环境应急研究所) | Ultrasonic crusher for activated sludge cell disruption and crushing method |
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