CN116493400A - Soil thermal desorption device and soil thermal desorption system comprising same - Google Patents
Soil thermal desorption device and soil thermal desorption system comprising same Download PDFInfo
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- CN116493400A CN116493400A CN202310569909.8A CN202310569909A CN116493400A CN 116493400 A CN116493400 A CN 116493400A CN 202310569909 A CN202310569909 A CN 202310569909A CN 116493400 A CN116493400 A CN 116493400A
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- 239000002689 soil Substances 0.000 title claims abstract description 143
- 238000003795 desorption Methods 0.000 title claims abstract description 78
- 239000000463 material Substances 0.000 claims abstract description 110
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 230000009471 action Effects 0.000 claims abstract description 19
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 26
- 238000000605 extraction Methods 0.000 claims description 21
- 239000002912 waste gas Substances 0.000 claims description 15
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 17
- 238000013461 design Methods 0.000 description 14
- 238000007789 sealing Methods 0.000 description 13
- 230000000875 corresponding effect Effects 0.000 description 12
- 238000000034 method Methods 0.000 description 12
- 238000009413 insulation Methods 0.000 description 10
- 230000007246 mechanism Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 238000007599 discharging Methods 0.000 description 5
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000011066 ex-situ storage Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
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- 239000000428 dust Substances 0.000 description 1
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- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
Abstract
The invention relates to the technical field of environmental treatment equipment, in particular to a soil thermal desorption device, which comprises a box-shaped main body with a detachable top cover, wherein a heating pipe is arranged in the box-shaped main body in a penetrating way, and a material guiding opening is further arranged at the bottom of the box-shaped main body; the device also comprises a material guiding piece and a conveying piece which are positioned at the outer side of the bottom of the box-shaped main body; the material guiding piece is provided with a material guiding channel and is used for executing actions to close the material guiding opening or communicate the material guiding opening with the material guiding channel to guide materials; the conveying part is positioned at the lower part of the material guiding part and is used for conveying the soil guided out by the material guiding channel. The invention has the characteristics of convenient soil arrangement and good adaptability, and can realize the repeated use of equipment.
Description
Technical Field
The invention relates to the technical field of environmental treatment equipment, in particular to a soil thermal desorption device.
Background
The thermal desorption treatment technology is a common organic polluted soil restoration technology at present, and the thermal desorption technology is divided into in-situ treatment and ex-situ treatment. The equipment required by the in-situ treatment is simple, the disturbance to the field is small, the treatment efficiency is low, the energy consumption is relatively high, and the repairing effect is poor. The ectopic treatment is carried out by transferring the polluted soil to a special site for treatment through excavation, the treatment efficiency is high, the repairing effect is good, but a great amount of time and funds are needed to be invested for one-time site construction each time, and the waste is serious.
CN 107685074A discloses a system and method for thermal desorption treatment by in-situ ex-situ stacking coverage of contaminated soil. The method adopted by the patent is to cover a sealing layer on the surface of a soil pile, install a heating pipe and an extraction pipe in the soil pile, volatilize and withdraw pollutants through heating, the sealing layer is responsible for heat preservation and heat insulation, and prevent the pollutants from diffusing at the same time; CN 213763426U discloses a thermal desorption treatment system with a heat insulation terrace and a heat insulation wall, which can partially improve the heat insulation effect, improve the thermal desorption efficiency, reduce the use of concrete, but still cannot solve other problems.
CN 109940035A, CN 110280578B disclose an integrated continuous treatment device and method. The patent discloses an integrated device with excavation, transmission, thermal desorption and tail gas treatment, but is not suitable for a soil environment requiring long-time ultrahigh temperature treatment due to a continuous treatment mode, and has a repair effect which is not as good as a fixed thermal desorption method, and meanwhile, the integrated device has higher field requirements on soil to be treated, and the device needs to meet the actions such as walking, turning around and the like, and has high use requirements and poor adaptability.
CN 211360044U discloses a thermal desorption treatment system with a box structure, which solves the defect that the stacking method requires lower water content of soil, but the device does not solve the problems of convenient soil in-out and repeated equipment use.
In view of the above, the present invention aims to provide a soil thermal desorption device to achieve convenient and quick use of equipment, and to achieve repeatability and convenience of soil loading and unloading.
Disclosure of Invention
The invention aims to provide a soil thermal desorption device which has the characteristics of convenience in soil arrangement and good adaptability and can realize the repeated use of equipment.
The aim of the invention is mainly realized by the following technical scheme: the soil thermal desorption device comprises a box-shaped main body with a detachable top cover, wherein a heating pipe is arranged in the box-shaped main body in a penetrating way, and a material guiding opening is further formed in the bottom of the box-shaped main body; the device also comprises a material guiding piece and a conveying piece which are positioned at the outer side of the bottom of the box-shaped main body; the material guide piece is provided with a material guide channel and is used for executing actions to close the material guide opening or communicate the material guide opening with the material guide channel to guide materials; the conveying part is positioned at the lower part of the material guiding part and is used for conveying the soil guided out by the material guiding channel.
Based on the technical scheme, box main part bottom interval is provided with a plurality of guide openings, every guide open-ended below all is provided with the guide.
Based on the technical scheme, a flow guiding structure is further arranged between any two of the material guiding openings, and the flow guiding structure is arranged on the inner side of the bottom of the box-shaped main body and used for guiding soil to one and/or two adjacent material guiding openings.
Based on the technical scheme, the flow guiding structure is a slope-shaped plate body with high middle part and low two sides.
Based on the technical scheme, the material guide piece is a roller, and the roller is rotatably arranged below the material guide opening; the roller is provided with at least one material guide channel along the axial direction of the roller, and the material guide channel radially penetrates through the roller; the roller can execute a rotating action to enable the roller to seal the material guiding opening through the circular arc outer wall of the roller, or rotate to the material guiding channel to be communicated with the material guiding opening for material guiding.
Based on above technical scheme, the transport piece includes a transport section of thick bamboo and is located the conveyor of transport section of thick bamboo, transport section of thick bamboo both ends and upper end all open-ended.
Based on above technical scheme, the transport piece still includes the groove that gathers materials that corresponds the guide passageway, gathers materials the groove symmetry set up in transport cylinder radial both sides, and all with transport cylinder inside intercommunication.
Based on the technical scheme, the material collecting groove is obliquely connected to the conveying cylinder, and one end, connected with the conveying cylinder, of the material collecting groove is the bottommost end of the material collecting groove.
Based on the technical scheme, the box-shaped main body consists of a hollow framework and a plate body covered on the hollow framework; the hollow framework is provided with a through hole at the inner side of the box-shaped main body, and the hollow framework is provided with an extraction pipe communicated with the through hole at the outer side of the box-shaped main body.
Based on the technical scheme, the surfaces or part surfaces of the top cover, the box-shaped main body, the material guide piece and the conveying piece are all provided with heat insulation layers.
Compared with the prior art, the soil thermal desorption device has the following beneficial effects:
the device has the advantages that the whole size and the weight can be adjusted according to the needs, and further the use demands of different soil treatment capacity, sites and the like can be realized, the device can be directly installed and used repeatedly, a special soil restoration pond and the like are not required to be excavated, the device is convenient to use, in addition, the device can be split and transported during transportation, further, resources are saved, the transportation cost is reduced, meanwhile, the contaminated soil adopts a mode of combining a guide piece from top to bottom, the gravitational potential energy of the soil is fully utilized, the rapid loading and unloading of the soil are realized, the cost of structure and soil treatment is reduced, the conveying piece is arranged for automatically conveying the discharged soil, manual discharging is not required, the automatic control is facilitated, the conveying efficiency is improved, the dry soil after desorption flows in the space in the box-shaped main body, the dust generation can be reduced to the greatest extent, the influence on the environment is reduced, the waste gas pipeline is formed by utilizing the hollow framework, the number of the extraction pipes is further, more extraction pipes are not required to be independently arranged, the space is effectively utilized, the number of the extraction pipes is reduced, the consumption of the extraction pipes is reduced, and the whole device is reasonable in design, and the application prospect is wide.
Meanwhile, the invention also provides a soil thermal desorption system based on the soil thermal desorption device, which comprises a gas pipeline, a tail gas pipeline, an exhaust gas pipeline and a plurality of soil thermal desorption devices; the soil thermal desorption devices are communicated with the gas pipeline, the tail gas pipeline and the waste gas pipeline; the gas pipeline and the tail gas pipeline are communicated with each heating pipe of the soil thermal desorption device, and the waste gas pipeline is communicated with each extraction pipe of the soil thermal desorption device.
This soil thermal desorption system is through a plurality of soil thermal desorption devices with the pipeline intercommunication to can realize concentrated steam supply and exhaust-gas treatment, and the exhaust-gas treatment that thermal desorption formed, form a desorption cluster, and then can carry out nimble configuration and application according to needs such as soil treatment place, square volume, process time, and then adaptability is stronger, and application prospect is also wider.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention. In the drawings:
FIG. 1 is a schematic view of a soil thermal desorption device, wherein a top cover is in an open state;
FIG. 2 is a schematic structural view of a soil thermal desorption device, wherein a top cover is in a closed state;
FIG. 3 is a transverse cross-sectional view of a soil thermal desorption apparatus;
FIG. 4 is a longitudinal cross-sectional view of a soil thermal desorption apparatus;
FIG. 5 is a schematic structural view of a chassis;
FIG. 6 is a schematic view of a material guide;
FIG. 7 is a schematic view of the structure of the transport member;
FIG. 8 is an enlarged view of the structure at A in FIG. 3;
FIG. 9 is a schematic diagram of a soil thermal desorption system;
the reference numerals in the figures are respectively expressed as:
1. a top cover; 2. a box-type main body; 3. heating pipes; 4. a material guiding opening; 5. a material guide; 6. a conveying member; 7. a material guiding channel; 8. a hollow skeleton; 9. a plate body; 10. an extraction tube; 11. a flow guiding structure; 12. an arc outer wall; 13. a connecting shaft; 14. a delivery cylinder; 15. a conveying device; 16. a material collecting groove; 17. a chassis; 18. a V-shaped bracket; 19. and a roller.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present invention and the descriptions thereof are for illustrating the present invention only and are not to be construed as limiting the present invention.
As shown in fig. 1-4, the embodiment provides a soil thermal desorption device, which comprises a box-shaped main body 2 with a detachable top cover 1, wherein a heating pipe 3 is arranged in the box-shaped main body 2 in a penetrating way, and a material guiding opening 4 is also arranged at the bottom of the box-shaped main body 2; the device also comprises a material guide piece 5 and a conveying piece 6 which are positioned at the outer side of the bottom of the box-shaped main body 2; the material guide piece 5 is provided with a material guide channel 7, and the material guide piece 5 is used for executing actions to close the material guide opening 4 or communicate the material guide opening 4 with the material guide channel 7 for material guide; the conveying part 6 is positioned at the lower part of the material guiding part 5 and is used for conveying the soil guided out by the material guiding channel 7.
When the thermal desorption soil box is applied, the box main body 2 is integrally used as a container for soil to be thermally desorbed, the top cover 1 can be opened and poured into the soil, the top cover 1 is closed again, the inner heating pipe 3 can be connected with an external heat source supply system such as a gas pipeline, electric equipment and the like so as to heat the soil in the box main body 2, the guide piece 5 performs actions to seal the guide opening 4 during heating, at the moment, the inside of the box main body 2 is a soil thermal desorption sealing cavity, after the soil is thermally desorbed in the box main body, the guide piece 5 performs actions to communicate the guide opening 4 with the guide channel 7 for guiding the soil, the soil can be discharged to the conveying piece 6 from the soil thermal desorption sealing cavity through the guide opening 4 and the guide channel 7 by means of gravitational potential energy, and then the soil is conveyed to a soil stacking position through the conveying piece 6, and thus the soil thermal desorption process can be completed.
Based on this, the soil thermal desorption device of this embodiment utilizes the box main part 2 of a specification, inject soil from its top, discharge by the bottom after accomplishing thermal desorption again, soil dress is discharged all very conveniently, and also the continuous soil thermal desorption circulation route of formation is convenient, and soil discharge relies on its gravitational potential energy to discharge, need not to establish power structure in addition, and the purpose of saving energy has also been played when simplifying the structure, and through the design of guide piece 5, can realize relying on its closed box main part 2 to carry out thermal desorption, simultaneously also can rely on its intercommunication guide opening 4 and guide passageway 7 in order to discharge soil automatically, the flow and the step of soil convenient and fast have been solved in the thermal desorption in-process of having simplified, cost has been practiced thrift, and the box main part 2 of this embodiment is very convenient to make and transport, and is favorable to use repeatedly for a long time, and then can repeatedly recycle, further reduce cost, transportation to the place can use, also shorten soil thermal desorption construction period and reduce the degree of difficulty and the construction, and better practicality and wide application prospect have.
Referring to fig. 4, the box-shaped body 2 is mainly used for a sealed container of soil, is used for containing the soil, and ensures the sealing property and desorption effect of the thermal desorption of the soil.
The box-shaped main body 2 is composed of a hollow framework 8 and a plate body 9 covered on the hollow framework 8. The hollow framework 8 is mainly used for forming a main body supporting framework, and the plate body 9 covers the hollow framework 8 and is mutually spliced under the support of the hollow framework 8 to form the box-shaped main body 2. When the hollow framework 8 is specifically applied, the hollow framework 8 can be an integrally formed framework structure, can also be a detachable framework structure formed by assembling a plurality of rod bodies or plate bodies through connecting pieces, can be designed according to the service condition and the transportation condition of products, the plate bodies 9 can be designed into a plurality of plates according to actual requirements, and the plurality of plates 9 are spliced into a complete plate body structure, so that the hollow framework 8 is sealed to form the box-shaped main body 2, and the box-shaped main body is convenient to detach, replace and transport. Further, in this embodiment, in consideration of the sealability of the box-shaped main body 2, the hollow frame 8 and the plate body 9 can be assembled into a whole in advance and subjected to corresponding sealing treatment, so that the box-shaped main body can be used without additional assembly during use, and sealing problems caused by assembly are not required to be considered.
Further, because the temperature in the box-shaped main body 2 is higher in the thermal desorption process, in order to ensure the structural stability and the tightness of the box-shaped main body 2, the hollow framework 8 and the plate body 9 are prevented from being deformed by heat to influence the use or the sealing effect, and meanwhile, the hollow framework 8 and the plate body 9 are prevented from reacting with waste gas generated by thermal desorption, and therefore, the hollow framework 8 and the plate body 9 are preferably made of high-temperature-resistant and corrosion-resistant metals, such as stainless steel.
Similarly, the top cover 1 is preferably made of a metal resistant to high temperature and corrosion, such as stainless steel, based on the above considerations.
Further, the heat insulation layer is arranged on the surfaces or part of the surfaces of the top cover 1, the box-shaped main body 2 and the material guide piece 5 and used for playing a role in heat insulation and heat preservation, so that the temperature of internal thermal desorption is ensured not to be excessively high, and the energy consumption is reduced. Specifically, the material guiding member 5 needs to seal the material guiding opening 4, so at least the surface part of the material guiding member, which seals the material guiding opening 4, needs to be provided with a heat insulation layer, and the inner side surface and the outer side surface of the top cover 1 and the box body 2 can be provided with the heat insulation layer to play a comprehensive heat insulation effect.
In the thermal desorption process, waste gas is generated in the soil thermal desorption process, the waste gas is generally required to be recovered, polluted air is avoided, an extraction pipe is inserted into thermal desorption equipment, the extraction pipe is connected with external air extraction equipment for air extraction to realize waste gas collection, the embodiment can also be used for carrying out waste gas collection, but the mode is characterized in that a large number of extraction pipes are required to be inserted into the equipment, namely the box-shaped main body 2, so that the soil filling space in the box-shaped main body 2 is influenced, the arrangement structure is complex, the cost is high, the integrity of the box-shaped main body 2 is also required to be damaged at a plurality of positions, the assembly difficulty and the use difficulty of the whole device are influenced, and the corresponding design cost and the consumable cost are also improved.
Based on this, as shown in fig. 1, the hollow frame 8 of the present embodiment is provided with a through hole inside the box-shaped main body 2, and the hollow frame 8 is provided with an extraction pipe 10 communicating with the through hole outside the box-shaped main body 2.
The whole hollow skeleton 8 is made by hollow section bar, the consideration at the beginning of the design is for the whole weight-reducing of device, and when the design extracts the tube structure, this embodiment ingenious utilization hollow skeleton 8 is hollow structure's characteristics, and then extraction structural design has been carried out, utilize run through on hollow skeleton 8 and set up the through-hole, make waste gas can get into hollow skeleton 8, and then through be provided with the extraction pipe 10 with the through-hole intercommunication in hollow skeleton 8 in the box main part 2 outside, extraction pipe 10 only need with the inside intercommunication of one of them hollow skeleton 8, can extract all waste gas, make extraction pipe 10 need not to increase other structures when the design, and only need to design one can, need not to set up many and destroy a plurality of plate body 9, it is also very convenient to use when simplifying the structure, reduce the consumptive material, also can guarantee the holistic integrality of device.
Referring to fig. 3, the heating pipe 3 is mainly used for heating soil inside the box-shaped body 2.
In particular implementation, in order to improve the utilization rate and reduce the installation quantity of the heating pipes, the heating pipes 3 may be arranged according to the structure of the box-shaped main body 2, for example, the box-shaped main body 2 of this embodiment may be arranged into a rectangular box-shaped structure in design, and the heating pipes 3 may be transversely arranged inside the box-shaped main body 2 along the length direction of the box-shaped main body, that is, the uniform heating of the soil in the desorption cavity may be ensured, and a plurality of heating pipes may be arranged according to the whole internal space of the box-shaped main body 2, and a plurality of heating pipes may be arranged at intervals to increase the heating area.
The guide opening 4 is mainly used for discharging soil in the box-type main body 2.
In the implementation, one or more guide openings 4 may be provided, and one or more corresponding guide members 5 may be provided, where the guide openings 4 may be formed by directly opening from the bottom of the box body 2, or may be formed by adding a pipeline, and the shape of the guide openings may be specifically set according to the guide members 5.
Because the overall internal space of the box-shaped main body 2 is large, in order to accelerate the soil discharge rate, a plurality of guide openings 4 are arranged at intervals at the bottom of the box-shaped main body 2 in the embodiment, and the lower part of each guide opening 4 is provided with a guide piece 5. Through this design, when needs discharge soil, a plurality of guide openings 4 all can be regarded as the soil discharge port and carry out the discharge, can accelerate soil discharge rate, simultaneously, a plurality of positions ejection of compact also can avoid centralized processing to lead to guide opening 4 to block up or soil to pile up, influences the discharge effect, also can reduce the local soil bearing capacity of transport piece 6 simultaneously for soil can even fall into transport piece 6 in order to conveniently export.
Referring to fig. 3 and 5, after thermal desorption of the soil, the soil may not be discharged normally due to extrusion and agglomeration, and based on this, a flow guiding structure 11 is further disposed between any two of the material guiding openings 4, where the flow guiding structure 11 is disposed inside the bottom of the box-shaped main body 2 and is used for guiding the soil to one and/or two adjacent material guiding openings 4.
Based on this, when it is desired to drain the soil, the flow guiding structure 11 can guide the flow of the internal soil to the adjacent one and/or two of the material guiding openings 4, so that the soil can be rapidly and comprehensively drained under the action of gravitational potential energy, and the residue of the soil can be reduced.
In specific implementation, the flow guiding structure 11 is a slope-shaped plate body with a high middle part and low two sides. In order to improve the water conservancy diversion effect, water conservancy diversion structure 11 wholly is triangular prism structure for the cross section, after setting up, its middle part is high, both sides are low, and its both sides can directly set up guide opening 4 to after guide opening 4 and guide passageway 7 intercommunication, soil on the guide opening 4 forms the cavity after being discharged, and other soil loses promptly under water conservancy diversion structure 11 effect and supports and then whereabouts, so forms continuously under the gravitational potential energy effect, can be quick realization soil discharge, and because water conservancy diversion structure 11 middle part is high both sides are low, its surface is difficult for remaining soil yet, can further guarantee the comprehensive discharge of soil.
Referring to fig. 6, the guide 5 is mainly used for performing an action to close the guide opening 4 or communicate the guide opening 4 with the guide channel 7 for guiding, and mainly realizes the functions of the box main body 2 and communicating the guide opening 4 with the guide channel.
In specific application, the material guiding piece 5 can be of a movable plate body structure, and can realize the functions through movement of the material guiding piece, for example, the material guiding piece can be a horizontally arranged flat plate and can horizontally move, and further realize the functions through horizontal movement; the structure of a rotary switch can also be adopted, for example, the material guide piece 5 can be a sealing plate with a turnover driving device, and the turnover driving device drives the sealing plate to rotate so as to realize the aim of the invention; various valve pipelines can be adopted, and the aim of the invention can be achieved by opening and closing the valve.
However, in practice, the flat plate and the closed plate structure need to be stressed, so that there is a need for additional structures such as plate body support, which makes the structure complex, and the corresponding action executing mechanism has high cost and is not economical enough, and the above design needs to consider the tightness with the box-shaped main body 2, and when a plurality of material guiding openings 4 are arranged, the matching situation with a plurality of material guiding openings 4 and the functions needed to be realized need to be considered, so that the structure is further complicated; when the valve pipeline is adopted for realizing, the sealing performance of the box-shaped main body 2 is considered, the requirement on the closing precision of the valve is higher, the valve is always blocked due to soil agglomeration in the use process, the setting size of the guide opening 4 is limited, the valve is required to be in a large quantity during the use, the cost is higher, most importantly, the valve is required to execute opening and closing actions for numerous times due to the continuous operation, the loss is large, the valve is extremely easy to damage and replace, the maintenance cost is increased, in the opening and closing action control, the manual mode is adopted, the workload is large, the soil discharge speed is influenced, the automatic control is adopted, the auxiliary electric appliance structural design and the system design of the equipment are certainly increased, and the equipment manufacturing equipment is greatly increased, so that the equipment cannot be damaged.
Based on this, in the present embodiment, the material guide 5 is provided as a roller rotatably provided below the material guide opening 4 in view of cost, manufacturing difficulty, sealability, operability, and convenience of use; the roller is provided with at least one material guide channel 7 along the axial direction of the roller, and the material guide channel 7 radially penetrates through the roller; the roller can execute a rotating action to enable the roller to close the material guiding opening 4 through the circular arc outer wall 12 of the roller, or rotate to the material guiding channel 7 to be communicated with the material guiding opening 4 for material guiding.
Based on this, the whole cylindric barrel structure of roller, its circular arc outer wall 12 can directly be regarded as the sealing surface and seal guide opening 4, and when the soil of needs discharge, make guide passageway 7 and guide opening 4 intercommunication form complete soil discharge passageway after the roller rotates, realize the discharge of soil, this mode, the whole low in manufacturing cost of roller is convenient for make, and need not to dispose other supporting facilities and assist, only need set up corresponding rotation actuating mechanism can, it is extremely convenient to use.
In a specific implementation, in order to ensure the sealing effect of the roller on the material guiding opening 4, the material guiding opening 4 may be a square opening and arranged in the same direction as the roller. And then a roller can accomplish the closure of corresponding guide opening 4 to also can utilize its circular arc outer wall 12 to form better face, limit laminating with guide opening 4, realize fabulous sealed effect, and the roller also can normally carry out the rotation action, and when the size of guide opening 4 appears changing, the roller also can adapt to the size change of guide opening 4 in a certain limit according to how much its part that gets deep into box main part 2, and then adapt to different opening size demands, need not to make separately again, convenient to use.
In particular, one or both ends of the roller may also be provided with corresponding connecting shafts 13 for its mounting with the box body 2 or for its transmission connection with an external rotary drive mechanism.
When the roller is specifically implemented, the guide channel 7 can be arranged along the length direction of the roller, the corresponding guide opening 4 can be arranged in a similar shape corresponding to the guide channel 7, and further, the large-size space of the guide channel 7 and the guide opening 4 can be ensured to be used for soil discharge, so that better pairing and soil discharge effects are formed. Further, can set up the roll table in the roller and decompose guide channel 7 into a plurality of solitary blanking spaces, and then not only can strengthen the structural strength of roller through the roll table, avoid guide channel 7 to offer the problem of roller yielding, the roll table also can shunt soil in order to discharge from different blanking spaces simultaneously, improves soil discharge effect.
In specific implementation, the whole box main body 2 can be set to be a rectangular structure, and the material guiding opening 4 and the roller can be set along the width direction of the box main body 2 and a plurality of material guiding openings are arranged along the length direction of the box main body 2 at intervals, so that the soil discharging effect is improved. Further, when the rollers are arranged in a plurality, a transmission system can be adopted for driving, synchronous rotation is further realized, unified discharging is realized, independent transmission systems can be independently adopted for driving each roller, and each roller can realize independent action according to the needs, so that when the conveying amount of the conveying piece 6 is excessive, the discharging amount of the corresponding part can be regulated through the independent rollers, and the normal use of the conveying piece 6 is ensured.
Referring to fig. 7, the conveying member 6 is mainly used to convey the discharged soil to a design position.
In a specific implementation, the conveying member 6 includes a conveying cylinder 14 and a conveying device 15 located in the conveying cylinder 14, and both ends and upper ends of the conveying cylinder 14 are open. The transport cylinder 14 is mainly used for receiving falling soil, while the transport device 15 is used for completing the soil transport.
In particular embodiments, the conveyor 15 may be a screw conveyor or a belt conveyor. Specifically, the spiral pipeline conveying mechanism can be an auger structure, and the belt conveying mechanism can be a conveying belt conveying mechanism.
In practical implementation, since the opening size of the guide opening 4 is large, or the opening area of the guide channel 7 is large, all the soil may not be completely received by the conveying cylinder 14, resulting in soil leakage, and if the volume and the opening area of the conveying cylinder 14 are increased, the corresponding problems of cost increase and soil leakage are increased, so in this embodiment, the conveying member 6 further includes the material collecting grooves 16 corresponding to the guide channel 7, and the material collecting grooves 16 are symmetrically disposed on two radial sides of the conveying cylinder 14 and are all communicated with the interior of the conveying cylinder 14.
Based on this, at guide channel 7 position, can constitute a soil collection structure of great scope and area through collecting groove 16 and transport cylinder 14, and then improve soil and collect the effect to, when guide 5 is roller structure, this setting mode still can form the collection pairing structure of laminating more with it, realizes the better pairing collection of soil.
Further, the collecting tank 16 is connected to the conveying cylinder 14 in an inclined manner, and one end of the collecting tank 16 connected to the conveying cylinder 14 is the bottommost end of the collecting tank 16. The collecting tank 16 is obliquely arranged in such a way, so that the collected soil can conveniently quickly slide into the conveying cylinder 14 under the action of gravity and is discharged by the conveying device 15, and the problem that soil is not timely conveyed due to soil accumulation is avoided.
Referring to fig. 5 and 8, the soil thermal desorption apparatus of the present embodiment further includes a chassis 17, and the box-shaped main body 2, the material guiding member 5 and the conveying member 6 are all disposed on the chassis 17.
The underframe 17 can be used as a supporting piece of the box-shaped main body 2, the material guiding piece 5 and the conveying piece 6 in implementation and is used for supporting and bearing the three, and can provide space for installation of the material guiding piece 5 and the conveying piece 6, and can be implemented by adopting a metal steel frame structure in application, so that excessive weight is not increased.
In the concrete implementation, when the guide piece 5 adopts a roller, the lower sides of the two ends of the bottom frame 17, which are positioned on the guide piece 5, are provided with V-shaped brackets 18, the two sides of the V-shaped brackets 18 are provided with rollers 19, and the guide piece 5 is arranged on the V-shaped brackets 18 and supported by the rollers 19 so as to conveniently execute the rotation action. So that the roller installation can be conveniently performed by using the V-shaped bracket 18 and the normal rotation of the roller can be ensured to perform the action.
Referring to fig. 9, the second embodiment of the present invention further discloses a soil thermal desorption system, which comprises a gas pipeline, a tail gas pipeline, an exhaust gas pipeline, and a plurality of soil thermal desorption devices according to the above embodiments; the soil thermal desorption devices are communicated with the gas pipeline, the tail gas pipeline and the waste gas pipeline; the gas pipeline and the tail gas pipeline are communicated with the heating pipes 3 of each soil thermal desorption device, and the waste gas pipeline is communicated with the extraction pipe 10 of each soil thermal desorption device.
According to the embodiment, the plurality of soil thermal desorption devices are communicated through the pipeline, so that concentrated hot gas supply and waste gas treatment formed by thermal desorption can be realized, a soil thermal desorption cluster is formed, flexible configuration and application can be carried out according to the requirements of soil treatment sites, square quantity, treatment time and the like, the adaptability is higher, and the application prospect is wider.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. The soil thermal desorption device is characterized by comprising a box-shaped main body with a detachable top cover, wherein a heating pipe is arranged in the box-shaped main body in a penetrating way, and a material guiding opening is further formed in the bottom of the box-shaped main body;
the device also comprises a material guiding piece and a conveying piece which are positioned at the outer side of the bottom of the box-shaped main body;
the material guide piece is provided with a material guide channel and is used for executing actions to close the material guide opening or communicate the material guide opening with the material guide channel to guide materials;
the conveying part is positioned at the lower part of the material guiding part and is used for conveying the soil guided out by the material guiding channel.
2. The soil thermal desorption apparatus according to claim 1, wherein a plurality of guide openings are provided at intervals at the bottom of the box-shaped main body, and the guide member is provided below each of the guide openings.
3. The soil thermal desorption apparatus according to claim 2, wherein a flow guiding structure is further provided between any two of the material guiding openings, and the flow guiding structure is provided inside the bottom of the box body for guiding the soil to an adjacent one and/or two of the material guiding openings.
4. A soil thermal desorption apparatus according to claim 3, wherein the flow guiding structure is a slope-shaped plate body with a high middle part and low two sides.
5. The soil thermal desorption device according to claim 1, wherein the material guiding piece is a roller, and the roller is rotatably arranged below the material guiding opening;
the roller is provided with at least one material guide channel along the axial direction of the roller, and the material guide channel radially penetrates through the roller;
the roller can execute a rotating action to enable the roller to seal the material guiding opening through the circular arc outer wall of the roller, or rotate to the material guiding channel to be communicated with the material guiding opening for material guiding.
6. The thermal soil desorption apparatus according to claim 1, wherein the conveying member comprises a conveying cylinder and a conveying device arranged in the conveying cylinder, and both ends and upper ends of the conveying cylinder are opened.
7. The thermal soil desorption apparatus according to claim 6, wherein the conveying member further comprises a material collecting groove corresponding to the material guiding passage, and the material collecting grooves are symmetrically arranged on two radial sides of the conveying cylinder and are communicated with the inside of the conveying cylinder.
8. The thermal soil desorption apparatus according to claim 7, wherein the material collecting tank is connected to the delivery cylinder in an inclined manner, and one end of the material collecting tank connected to the delivery cylinder is the bottommost end of the material collecting tank.
9. The soil thermal desorption apparatus according to claim 1, wherein the box-shaped main body is composed of a hollow framework and a plate body covered on the hollow framework;
the hollow framework is provided with a through hole at the inner side of the box-shaped main body, and the hollow framework is provided with an extraction pipe communicated with the through hole at the outer side of the box-shaped main body.
10. A soil thermal desorption system comprising a gas pipeline, a tail gas pipeline and an exhaust gas pipeline, and further comprising a plurality of soil thermal desorption devices according to any one of claims 1 to 9;
the soil thermal desorption devices are communicated with the gas pipeline, the tail gas pipeline and the waste gas pipeline;
the gas pipeline and the tail gas pipeline are communicated with each heating pipe of the soil thermal desorption device, and the waste gas pipeline is communicated with each extraction pipe of the soil thermal desorption device.
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| CN202310569909.8A CN116493400B (en) | 2023-05-19 | 2023-05-19 | Soil thermal desorption device and soil thermal desorption system comprising same |
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| CN116493400B (en) | 2024-03-08 |
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