CN116474726B - Biochar device for repairing heavy metal contaminated soil - Google Patents
Biochar device for repairing heavy metal contaminated soil Download PDFInfo
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- CN116474726B CN116474726B CN202310551522.XA CN202310551522A CN116474726B CN 116474726 B CN116474726 B CN 116474726B CN 202310551522 A CN202310551522 A CN 202310551522A CN 116474726 B CN116474726 B CN 116474726B
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- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 22
- 239000002689 soil Substances 0.000 title claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 51
- 230000007246 mechanism Effects 0.000 claims abstract description 35
- 238000001816 cooling Methods 0.000 claims abstract description 34
- 238000010438 heat treatment Methods 0.000 claims abstract description 34
- 238000002347 injection Methods 0.000 claims abstract description 17
- 239000007924 injection Substances 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims description 84
- 239000007788 liquid Substances 0.000 claims description 37
- 238000011084 recovery Methods 0.000 claims description 26
- 230000000694 effects Effects 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 239000010802 sludge Substances 0.000 description 42
- 238000000197 pyrolysis Methods 0.000 description 27
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 14
- 235000017491 Bambusa tulda Nutrition 0.000 description 14
- 241001330002 Bambuseae Species 0.000 description 14
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 14
- 239000011425 bamboo Substances 0.000 description 14
- 230000005415 magnetization Effects 0.000 description 14
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 13
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 13
- 239000000292 calcium oxide Substances 0.000 description 13
- 239000012530 fluid Substances 0.000 description 13
- 239000007789 gas Substances 0.000 description 10
- 230000005540 biological transmission Effects 0.000 description 8
- 238000004064 recycling Methods 0.000 description 7
- 239000002957 persistent organic pollutant Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000005336 cracking Methods 0.000 description 4
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 239000012295 chemical reaction liquid Substances 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000005067 remediation Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 229940088710 antibiotic agent Drugs 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 229910052815 sulfur oxide Inorganic materials 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3078—Thermal treatment, e.g. calcining or pyrolizing
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/05—Preparation or purification of carbon not covered by groups C01B32/15, C01B32/20, C01B32/25, C01B32/30
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/004—Sludge detoxification
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/48—Sorbents characterised by the starting material used for their preparation
- B01J2220/4875—Sorbents characterised by the starting material used for their preparation the starting material being a waste, residue or of undefined composition
- B01J2220/4887—Residues, wastes, e.g. garbage, municipal or industrial sludges, compost, animal manure; fly-ashes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a biochar device for repairing heavy metal contaminated soil, which particularly relates to the technical field of soil repair, and comprises a supporting underframe, wherein a material guide transverse cylinder is fixedly arranged at the top end of the supporting underframe, the material guide transverse cylinder is divided into a preheating zone, a magnetizing zone, a material injection zone, a heating zone and a cooling zone, bearings are fixedly clamped at two end parts of the material guide transverse cylinder, an auger material guide shaft is fixedly clamped in the middle of the bearings, the auger material guide shaft is movably clamped in the material guide transverse cylinder, a preheating piece is arranged at the position of the preheating zone, and a magnetizing mechanism is arranged in the magnetizing zone.
Description
Technical Field
The invention relates to the technical field of soil remediation, in particular to a biochar device for heavy metal contaminated soil remediation.
Background
With the aggravation of human industrial and agricultural activities, persistent organic pollutants with high toxicity, high accumulation, difficult degradation and long-distance migration are continuously accumulated in a farmland soil system, and once entering a food chain, the persistent organic pollutants can form a great threat to human health; the bioavailability of POPs in soil is a main control factor of environmental behaviors such as migration and transformation, and the mobility and bioavailability of organic pollutants in soil are reduced by utilizing the adsorption performance of biochar;
with the continuous and rapid development of economy, the urban sewage treatment capacity is continuously improved, so that the sludge yield is increased, the sludge can be isolated from air and subjected to anaerobic pyrolysis to prepare biochar, and products of sludge pyrolysis (biochar, pyrolysis tar, pyrolysis gas and the like) have multiple utilization values, so that the 'recycling' utilization of the sludge is realized; the biochar has large specific surface area, rich surface groups and high contents of elements such as nitrogen, phosphorus, potassium and the like, is a good environment restoration material, and can provide certain nutrients for plant growth; the pyrolysis tar and the pyrolysis gas have certain combustibility and can be used as potential energy sources; organic components such as persistent organic pollutants and antibiotics which are difficult to separate and remove in the sludge are completely pyrolyzed by pyrolysis, the generation of nitrogen oxides and sulfur oxides is greatly reduced in an oxygen-free environment, the generated biochar is firmly adsorbed by heavy metals, and the generated biochar is firmly adsorbed by heavy metals;
the sludge contains organic matters, the organic matters in the sludge are heated under the anaerobic or anoxic condition, so that the organic matters can be thermally cracked, the adsorption of the fly ash to nitrogen and phosphorus is utilized, the fly ash is added into the sludge to prepare the biochar, but the existing biochar device still has some problems in the preparation of the biochar:
when mud pyrolysis, can produce some usable pyrolysis gas, pyrolysis gas is inconvenient to collect alone, influences the recycling efficiency of mud, and secondly, the heating time of mud is longer and process time is longer to can influence the preparation efficiency of mud biochar, for this reason, we propose a heavy metal contaminated soil prosthetic biochar device and be used for solving above-mentioned problem.
Disclosure of Invention
The invention aims to provide a biochar device for repairing heavy metal contaminated soil, which aims to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a heavy metal contaminated soil prosthetic biochar device, includes the support chassis, the top fixed mounting of support chassis has the horizontal section of thick bamboo of guide, divide into preheating zone, magnetization zone, annotate material district, heating zone and cooling zone on the horizontal section of thick bamboo of guide, the both ends of the horizontal section of thick bamboo of guide all fixed fastening is equipped with the bearing, the fixed fastening in bearing middle part is equipped with auger guide shaft, auger guide shaft activity joint is in the horizontal section of thick bamboo of guide, preheating zone position department is equipped with the preheating piece, magnetization zone is equipped with magnetization mechanism, the top fixed mounting of the horizontal section of thick bamboo of guide of injection zone position department has the feeding tube, cooling zone position department is equipped with cooling module, the one end fixed mounting that the horizontal section of thick bamboo of guide is close to the district has the feed inlet, the one end fixed mounting that the horizontal section of thick bamboo of guide is close to the cooling zone has the discharge gate, the top fixed mounting of feed inlet has mixing mechanism.
Preferably, the preheating piece includes first heat conduction frame, first heat conduction frame is annular structure, first heat conduction frame is fixed to be cup jointed in preheating zone position department, the feeding is worn the groove in the top intermediate position of first heat conduction frame and is offered, the feed inlet is arranged in the feeding is worn the groove, first chamber has been offered in the first heat conduction frame, bottom one side fixed mounting of first heat conduction frame has first mouth of pipe, first mouth of pipe and first chamber communicate each other, first mouth of pipe's bottom fixed mounting has first feed liquor pipe, first heat conduction frame top is kept away from first mouth of pipe one side fixed mounting and is had the second mouth of pipe, second mouth of pipe and first chamber communicate each other, the first drain pipe of second mouth of pipe's top fixed mounting.
Preferably, the magnetization mechanism comprises a first circulation pipe orifice and a second circulation pipe orifice, the first circulation pipe orifice is fixedly arranged at the top of a material guiding transverse cylinder at the position of the magnetization area, the second circulation pipe orifice is fixedly arranged at the side part of the material guiding transverse cylinder at the position of the magnetization area, the first circulation pipe orifice and the second circulation pipe orifice are communicated with the material guiding transverse cylinder, a magnetic inlet pipe is fixedly arranged at the top end of the first circulation pipe orifice, an air inlet magnetization air fan is fixedly arranged at one end of the magnetic inlet pipe far away from the first circulation pipe orifice, and a circulation pipeline is fixedly arranged between one end of the air inlet magnetization air fan far away from the magnetic inlet pipe and the end of the second circulation pipe orifice.
Preferably, an exhaust pipeline is fixedly arranged at the top of the transverse guide cylinder at the position of the heating area, a tar collecting frame is fixedly arranged at the bottom of the transverse guide cylinder at the position of the heating area, an oil discharge pipe is fixedly arranged at the bottom of the focusing oil frame, and a plurality of oil guide penetrating grooves which are uniformly distributed are formed in the bottom of the transverse guide cylinder at the position of the heating area.
Preferably, the cooling assembly comprises a second heat conduction frame, the second heat conduction frame is of an annular structure, the second heat conduction frame is fixedly sleeved at the position of the cooling area, a second cavity is formed in the second heat conduction frame, a third pipe orifice is fixedly arranged on one side of the top of the second heat conduction frame, the third pipe orifice and the second cavity are mutually communicated, a second liquid inlet pipe is fixedly arranged on the top end of the third pipe orifice, a fourth pipe orifice is fixedly arranged on one side, far away from the third pipe orifice, of the bottom of the second heat conduction frame, the fourth pipe orifice and the second cavity are mutually communicated, and a second liquid outlet pipe is fixedly arranged at the bottom end of the fourth pipe orifice.
Preferably, a first recovery pipe is fixedly arranged at one end part of the second liquid outlet pipe, which is far away from the fourth pipe orifice, a liquid guide pump mechanism is fixedly arranged at one end of the first recovery pipe, which is far away from the first recovery pipe, a second recovery pipe is fixedly arranged at one end of the liquid guide pump mechanism, which is far away from the first recovery pipe, and the end part of the second recovery pipe, which is far away from the liquid guide pump mechanism, is fixedly arranged at the end part of the first liquid inlet pipe.
Preferably, the mixing mechanism comprises a first mixing cylinder, a second mixing cylinder is fixedly arranged at the bottom end of the first mixing cylinder, a plurality of feeding holes are fixedly arranged at the top of the first mixing cylinder, the bottom end of the second mixing cylinder and the top end of the feeding hole are fixedly arranged, the bottom of the second mixing cylinder and the feeding hole are mutually communicated, a first mixing frame is rotatably arranged in the first mixing cylinder, a second mixing frame is rotatably arranged in the second mixing cylinder, the first mixing frame and the second mixing frame are coaxially and fixedly arranged, a driven gear is fixedly arranged at the top of the first mixing frame in an extending mode, a crown gear is connected to the outer side of the driven gear in a meshed mode, a first shaft is fixedly arranged in the middle of the crown gear, and the first shaft is rotatably arranged at the top end of the first mixing frame.
Preferably, a supporting longitudinal frame is fixedly arranged at one end part of the transverse guide cylinder, which is close to the preheating zone, and the mixing mechanism is fixedly arranged on the supporting longitudinal frame through a first mixing cylinder and a second mixing cylinder.
Preferably, a driving motor is fixedly installed on one side, close to the supporting longitudinal frame, of the supporting bottom frame, and the driving end of the driving motor and one end part of the auger guide shaft are coaxially and fixedly installed.
Preferably, one side of the first shaft far away from the crown gear is rotatably arranged at the top of the supporting longitudinal frame, a belt pulley transmission group is fixedly sleeved at one end part of the first shaft and one end part of the auger guide shaft, the belt pulley transmission group comprises two belt pulleys and a transmission belt movably sleeved at the outer sides of the two belt pulleys, and the two belt pulleys are respectively and fixedly arranged at one end parts of the first shaft and one end part of the auger guide shaft.
Compared with the prior art, the invention has the beneficial effects that:
1. by arranging the material guiding transverse cylinder, the device is divided into a preheating zone, a magnetizing zone, a material injection zone, a heating zone and a cooling zone, and a preheating piece, a magnetizing mechanism, a material injection pipe and a cooling assembly are matched for use, so that sludge is directly preheated, magnetized, injected, heated and cooled in sequence, and waste gas and pyrolysis tar are recycled after pyrolysis, so that the efficiency of preparing biochar from the sludge is improved;
2. the preheating piece is arranged to preheat the sludge and the calcium oxide in the preheating area at a low temperature, so that the follow-up high-temperature pyrolysis of the sludge and the calcium oxide is facilitated, and meanwhile, the moisture in the sludge is evaporated, and the sludge is discharged out of the material guiding transverse cylinder;
3. by arranging the magnetization mechanism, the gas molecules are changed from disorder to order under the action of a magnetic field, the activation energy of the gas molecules is improved, the cohesion among the molecules of the substances to be cracked is reduced, the required temperature for cracking is less than 350 ℃, the cracking temperature is greatly reduced, and the pyrolysis efficiency is improved;
4. through setting up cooling module, preheating the piece, cooperation uses first recovery pipe, second recovery pipe, can be with follow second drain pipe exhaust hot fluid through first recovery, the leading-in first feed liquor pipe of second recovery pipe, carry out thermal recycle, and then promote the result of use of whole device.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Figure 1 is a schematic diagram of the structure of the present invention,
FIG. 2 is a schematic view of the structure of the transverse guide cylinder in the invention,
FIG. 3 is a schematic view of the preheating unit according to the present invention,
figure 4 is a schematic view of the structure of the magnetizing mechanism in the present invention,
figure 5 is a schematic view of the structure of the heating zone in the present invention,
figure 6 is a schematic view of the cooling module according to the present invention,
figure 7 is a schematic view of the mixing mechanism of the present invention,
fig. 8 is a schematic view of another embodiment of the present invention.
In the figure: 1. a support chassis; 2. a material guiding transverse cylinder; 21. a preheating zone; 22. a magnetization region; 23. a material injection area; 24. a heating zone; 25. a cooling zone; 201. a feed inlet; 202. a discharge port; 3. a bearing; 4. auger guide shaft; 5. a preheating piece; 6. a magnetizing mechanism; 7. a material injection pipe; 8. a cooling assembly; 9. a mixing mechanism; 10. a support longitudinal frame; 11. a driving motor; 12. a pulley drive set; 13. a first recovery pipe; 14. a liquid guide pump mechanism; 15. a second recovery pipe; 51. a first heat conduction frame; 511. feeding through the groove; 501. a first chamber; 52. a first nozzle; 521. a first liquid inlet pipe; 53. a second nozzle; 531. a first liquid outlet pipe; 61. a first circulation nozzle; 62. a magnetic inlet pipe; 63. an air inlet magnetizing air blower; 64. a circulation pipe; 65. a second circulation nozzle; 241. an exhaust duct; 242. a tar collecting frame; 243. an oil drain pipe; 244. oil guiding through grooves; 81. a second heat conduction frame; 82. a third nozzle; 821. a second liquid inlet pipe; 83. a fourth nozzle; 831. a second liquid outlet pipe; 801. a second chamber; 91. a first mixing drum; 911. a feed inlet; 92. a second mixing drum; 93. a first mixing rack; 94. a second mixing rack; 95. a driven gear; 951. a crown gear; 952. a first shaft.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples: as shown in fig. 1-8, the invention provides a biochar device for repairing heavy metal contaminated soil, which comprises a support underframe 1, wherein a transverse guide cylinder 2 is fixedly arranged at the top end of the support underframe 1, and the transverse guide cylinder 2 is divided into a preheating zone 21, a magnetizing zone 22, a material injection zone 23, a heating zone 24 and a cooling zone 25; wherein, a first heating element is arranged at one side of the preheating zone 21 near the magnetizing zone 22, a second heating element is arranged between the material injecting zone 23 and the heating zone 24, and a third heating element is arranged on the heating zone 24;
the two ends of the horizontal guide cylinder 2 are fixedly clamped with bearings 3, the middle part of each bearing 3 is fixedly clamped with an auger guide shaft 4, each auger guide shaft 4 is movably clamped in the horizontal guide cylinder 2, one end part of the horizontal guide cylinder 2, which is close to the preheating zone 21, is fixedly provided with a feed inlet 201, one end part of the horizontal guide cylinder 2, which is close to the cooling zone 25, is fixedly provided with a discharge outlet 202, and the horizontal guide cylinder 2 stably rotates through the auger guide shafts 4, so that sludge injected into the horizontal guide cylinder 2 from the feed inlet 201 can be sequentially and automatically transported to the preheating zone 21, the magnetizing zone 22, the material injection zone 23, the heating zone 24 and the cooling zone 25, and the sludge is sequentially and directly preheated, magnetized, injected, heated and cooled, so that the efficiency of preparing biochar from the sludge is improved;
the preheating part 5 is arranged at the position of the preheating zone 21, the magnetizing mechanism 6 is arranged at the magnetizing zone 22, the cooling component 8 is arranged at the position of the cooling zone 25, and the mixing mechanism 9 is fixedly arranged at the top end of the feeding hole 201.
A supporting longitudinal frame 10 is fixedly arranged at one end part of the material guiding transverse cylinder 2, which is close to the preheating zone 21;
the mixing mechanism 9 comprises a first mixing cylinder 91, a second mixing cylinder 92 is fixedly arranged at the bottom end of the first mixing cylinder 91, the mixing mechanism 9 is fixedly arranged on the supporting longitudinal frame 10 through the first mixing cylinder 91 and the second mixing cylinder 92, and the stability of the mixing mechanism 9 is improved;
a plurality of feed inlets 911 are fixedly arranged at the top of the first mixing drum 91, and when the device is used, sludge and a proper amount of calcium oxide are injected into the first mixing drum 91 through the feed inlets 911;
the bottom of second mixing section of thick bamboo 92 and the top fixed mounting of feed inlet 201, the bottom of second mixing section of thick bamboo 92 and feed inlet 201 communicate each other, first mixing section of thick bamboo 91 is rotationally installed first mixing frame 93, second mixing section of thick bamboo 92 is rotationally installed second mixing frame 94, first mixing frame 93, the coaxial fixed mounting of second mixing frame 94, the top of first mixing frame 93 extends the top of first mixing section of thick bamboo 91 and fixedly installs driven gear 95, the outside meshing of driven gear 95 is connected with crown gear 951, the middle part fixed mounting of crown gear 951 has first axle 952, first axle 952 rotates and installs on the top of first mixing frame 93, rotates through first axle 952, drives crown gear 951 and drives driven gear 95 and rotate fast, and then drives first mixing frame 93, second mixing frame 94 and rotate fast, after mud and moderate amount of calcium oxide are poured into first mixing section of thick bamboo 91 into, through first mixing frame 93 rotation mixes mud and moderate amount of calcium oxide in the first mixing section of thick bamboo 91 and carries out the mixed quality of mixed mud of second mixing frame 92, and then carries out the mixed quality of mixed mud of mixed quality of second level biological oxidation, and further improves the mixed mud of the second level of quality.
The support chassis 1 is close to one side of supporting the longitudinal frame 10 and fixedly provided with a driving motor 11, the driving end of the driving motor 11 and one end part of the auger guide shaft 4 are coaxially and fixedly arranged, and the driving motor 11 is controlled to be started to drive the auger guide shaft 4 to stably rotate in the guide transverse cylinder 2.
One side of the first shaft 952, which is far away from the crown gear 951, is rotatably mounted at the top of the supporting longitudinal frame 10, a pulley transmission set 12 is fixedly sleeved at one end of the first shaft 952 and one end of the auger guide shaft 4, the pulley transmission set 12 comprises two pulleys and a transmission belt movably sleeved at the outer sides of the two pulleys, the two pulleys are respectively fixedly mounted at one end of the first shaft 952 and one end of the auger guide shaft 4, and the pulley transmission set 12 is cooperatively used to drive the first shaft 952 to rotate while the auger guide shaft 4 rotates.
The preheating piece 5 includes first heat conduction frame 51, first heat conduction frame 51 is annular structure, first heat conduction frame 51 is fixed cup joint in preheating zone 21 position department, feed through groove 511 has been seted up to the top intermediate position of first heat conduction frame 51, feed inlet 201 is arranged in feed through groove 511, first heat conduction frame 51 wraps up preheating zone 21, first chamber 501 has been seted up in the first heat conduction frame 51, first mouth of pipe 52 is installed to bottom one side of first heat conduction frame 51, first mouth of pipe 52 and first chamber 501 communicate each other, first mouth of pipe 52's bottom fixed mounting has first feed liquor pipe 521, first heat conduction frame 51 top is kept away from first mouth of pipe 52 one side fixed mounting and is had second mouth of pipe 53, second mouth of pipe 53 and first chamber 501 communicate each other, the top fixed mounting of second mouth of pipe 53 has first feed liquor pipe 531, and first mouth of pipe 52 leads into first chamber 51, and carries out the thermal fluid and carries out the pyrolysis effect of calcium oxide to the low temperature and the mud of high-temperature and the horizontal mud of the horizontal thermal decomposition of the high-temperature of the sludge of the side 21 of the preheating zone after passing through first heat conduction frame 51, and the mud is convenient for the horizontal to evaporate.
The magnetizing mechanism 6 comprises a first circulating pipe orifice 61 and a second circulating pipe orifice 65, the first circulating pipe orifice 61 is fixedly arranged at the top of the material guiding transverse cylinder 2 at the position of the magnetizing area 22, the second circulating pipe orifice 65 is fixedly arranged at the side part of the material guiding transverse cylinder 2 at the position of the magnetizing area 22, the first circulating pipe orifice 61 and the second circulating pipe orifice 65 are communicated with the material guiding transverse cylinder 2, the top end of the first circulating pipe orifice 61 is fixedly provided with a magnetic inlet pipe 62, one end of the magnetic inlet pipe 62 far from the first circulating pipe orifice 61 is fixedly provided with an air inlet magnetizing air fan 63, a circulating pipeline 64 is fixedly arranged between one end of the air inlet magnetizing air fan 63 far from the magnetic inlet pipe 62 and the end of the second circulating pipe orifice 65, after sludge and calcium oxide are preheated at a low temperature, the air inlet magnetizing air fan 63 is primarily heated and transported to the magnetizing area 22 through a first heating element, magnetized air enters the material guiding transverse cylinder 2 to be contacted with the sludge, and circularly enters the air inlet magnetizing air fan 63 through the second circulating pipe orifice 65 and the circulating pipe orifice 64, the air inlet magnetizing air fan 63 is enabled to be in the middle of the air inlet magnetizing air through the second circulating pipe orifice 65, the circulating air fan 63 is enabled to be at a temperature which is enabled to be greatly reduced, the temperature is enabled, the pyrolysis efficiency is greatly reduced, the pyrolysis efficiency is greatly is improved, and the molecular pyrolysis efficiency is greatly is reduced, and the pyrolysis efficiency is required to be greatly is improved, and the molecular pyrolysis efficiency is greatly is reduced.
The top of the material guiding transverse cylinder 2 at the position of the material injection area 23 is fixedly provided with a material injection pipe 7, sludge is magnetized and is subjected to secondary heating through a second heating element, the sludge enters the material injection area 23, heavy metal reaction liquid is injected through the material injection pipe 7 to react with heavy metal in the sludge, the heavy metal content is reduced, and the preparation quality of biochar is further improved;
the top of the horizontal guide cylinder 2 at the position of the heating zone 24 is fixedly provided with an exhaust pipeline 241, the bottom of the horizontal guide cylinder 2 at the position of the heating zone 24 is fixedly provided with a tar collecting frame 242, the bottom of the oil collecting frame 242 is fixedly provided with an oil discharging pipe 243, the bottom of the horizontal guide cylinder 2 at the position of the heating zone 24 is provided with a plurality of evenly distributed oil guiding penetrating grooves 244, sludge is transported to the heating zone 24 for high-temperature heating pyrolysis after reacting, biochar is prepared, the generated recyclable hot gas is discharged through the exhaust pipeline 241 for subsequent recycling, generated pyrolysis tar flows into the tar collecting frame 242 through the plurality of oil guiding penetrating grooves 244 and is discharged through the oil discharging pipe 243 for subsequent recycling, and therefore the recycling of waste gas and pyrolysis tar after pyrolysis is promoted, and the utilization efficiency of the sludge is further promoted.
The cooling assembly 8 comprises a second heat conduction frame 81, the second heat conduction frame 81 is of an annular structure, the second heat conduction frame 81 is fixedly sleeved at the position of the cooling area 25, the second heat conduction frame 81 wraps the cooling area 25, a second cavity 801 is formed in the second heat conduction frame 81, a third pipe orifice 82 is fixedly arranged on one side of the top of the second heat conduction frame 81, the third pipe orifice 82 and the second cavity 801 are mutually communicated, a second liquid inlet pipe 821 is fixedly arranged at the top end of the third pipe orifice 82, a fourth pipe orifice 83 is fixedly arranged on one side, far away from the third pipe orifice 82, of the bottom of the second heat conduction frame 81, the fourth pipe orifice 83 and the second cavity 801 are mutually communicated, a second liquid outlet pipe 831 is fixedly arranged at the bottom end of the fourth pipe orifice 83, after biochar is prepared, the biochar is transported to the cooling area 25, and cold fluid is introduced into the second cavity 801 through the second liquid inlet pipe 821 and the third pipe orifice 82, the biochar in the cooling area 25 is cooled by the heat conduction effect of the second heat conduction frame 82 and the heat conduction, the biochar is conveniently cooled by the second heat conduction frame 82, and the second fluid is discharged into the fourth cold fluid through the fourth liquid outlet pipe 831, and the second cold fluid is discharged through the fourth liquid outlet pipe 831.
The second liquid outlet pipe 831 is kept away from the first recovery pipe 13 of one end fixed mounting of fourth mouth of pipe 83, the one end fixed mounting that second liquid outlet pipe 831 was kept away from to first recovery pipe 13 has liquid guide pump mechanism 14, liquid guide pump mechanism 14 is kept away from the one end fixed mounting of first recovery pipe 13 has second recovery pipe 15, the one end that liquid guide pump mechanism 14 was kept away from to second recovery pipe 15 and the tip fixed mounting of first feed liquor pipe 521, during the use, open liquid guide pump mechanism 14, will follow the hot fluid of second liquid outlet pipe 831 and guide into in the first feed liquor pipe 521 through first recovery pipe 13, second recovery pipe 15, carry out heat recycle, and then promote the result of use of whole device.
Working principle: when the mixer is used, the driving motor 11 is controlled to be started to drive the auger guide shaft 4 to stably rotate in the guide transverse cylinder 2, and the belt pulley transmission group 12 is matched with the auger guide shaft 4 to drive the first shaft 952 to rotate so as to drive the crown gear 951 to drive the driven gear 95 to rapidly rotate, so that the first mixing frame 93 and the second mixing frame 94 are driven to rapidly rotate;
the sludge and a proper amount of calcium oxide are injected into the first mixing drum 91 through the plurality of feed inlets 911, the first mixing drum 91 is rotated and mixed by the first mixing frame 93, the sludge and a proper amount of calcium oxide in the first mixing drum 91 are subjected to primary mixing, and enter the second mixing drum 92 to be subjected to secondary mixing by the second mixing frame 94, so that the mixing efficiency of the sludge and the calcium oxide is effectively improved;
after mixing, the sludge is injected into the material guiding transverse cylinder 2 through the feeding hole 201, and the material guiding shaft 4 stably rotates in the material guiding transverse cylinder 2, so that the sludge injected into the material guiding transverse cylinder 2 from the feeding hole 201 can be sequentially and automatically transported to the preheating zone 21, the magnetizing zone 22, the material injecting zone 23, the heating zone 24 and the cooling zone 25, and the sludge is sequentially and directly preheated, magnetized, injected, heated and cooled;
while the sludge is led into the preheating zone 21, the hot fluid is led into the first cavity 501 through the first liquid inlet pipe 521 and the first pipe orifice 52, and the sludge and the calcium oxide in the preheating zone 21 are preheated at low temperature through the heat conduction effect of the first heat conduction frame 51, so that the subsequent high-temperature pyrolysis of the sludge and the calcium oxide is facilitated, and meanwhile, the water in the sludge is evaporated, and the sludge is discharged out of the material guiding transverse cylinder 2;
when sludge and calcium oxide are preheated at low temperature and then are primarily heated and transported to a magnetization area 22 through a first heating element, an air inlet magnetization air fan 63 is started, magnetization air enters a material guiding transverse cylinder 2 through a magnetic inlet pipe 62 and a first circulating pipe orifice 61 to be contacted with the sludge, and circularly enters the air inlet magnetization air fan 63 through a second circulating pipe orifice 65 and a circulating pipe orifice 64, so that gas molecules are changed into order from disorder through the action of a magnetic field, the activation energy of the gas molecules is improved, the cohesion among the molecules of substances to be cracked is reduced, the required cracking temperature is lower than 350 ℃, and the cracking temperature is greatly reduced;
the sludge is magnetized and is subjected to secondary heating through a second heating element, enters a material injection area 23, and is injected with heavy metal reaction liquid through a material injection pipe 7 to react with heavy metal in the sludge, so that the heavy metal content is reduced;
the sludge is transported to a heating zone 24 for high-temperature heating pyrolysis after reaction, biochar is prepared, the generated recyclable hot gas is discharged through an exhaust pipeline 241 for subsequent recycling, and the generated pyrolysis tar flows into a tar collecting frame 242 through a plurality of oil guide penetrating grooves 244 for collection and is discharged through an oil discharge pipe 243 for subsequent recycling;
after the biochar is prepared, transporting the biochar to a cooling area 25, introducing cold fluid into a second cavity 801 through a second liquid inlet pipe 821 and a third pipe orifice 82, cooling the biochar in the cooling area 25 by the heat conduction effect and heat conduction of a second heat conduction frame 81, facilitating the subsequent cooling processing of the biochar, changing the cold fluid into hot fluid, and discharging the hot fluid through a fourth pipe orifice 83 and a second liquid outlet pipe 831;
simultaneously, the liquid guide pump mechanism 14 is started, and the hot fluid discharged from the second liquid outlet pipe 831 is guided into the first liquid inlet pipe 521 through the first recovery pipe 13 and the second recovery pipe 15, so that heat is recovered and utilized, and the using effect of the whole device is further improved.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a heavy metal contaminated soil prosthetic biochar device, includes support chassis (1), its characterized in that: the device comprises a supporting underframe (1), wherein a transverse guide cylinder (2) is fixedly arranged at the top end of the supporting underframe (1), the transverse guide cylinder (2) is divided into a preheating zone (21), a magnetizing zone (22), a material injection zone (23), a heating zone (24) and a cooling zone (25), bearings (3) are fixedly clamped at two end parts of the transverse guide cylinder (2), an auger guide shaft (4) is fixedly clamped at the middle part of the bearings (3), the auger guide shaft (4) is movably clamped in the transverse guide cylinder (2), a preheating piece (5) is arranged at the position of the preheating zone (21), a magnetizing mechanism (6) is arranged at the magnetizing zone (22), a material injection pipe (7) is fixedly arranged at the top part of the transverse guide cylinder (2) at the position of the material injection zone (23), a cooling component (8) is arranged at the position of the cooling zone (25), a feeding port (201) is fixedly clamped at one end part of the transverse guide cylinder (2) close to the preheating zone (21), a feeding port (201) is fixedly clamped at one end part of the transverse guide cylinder (2) close to the cooling zone (25), and a mixing mechanism (9) is fixedly arranged at the top end of the feeding port (201);
the preheating piece (5) comprises a first heat conduction frame (51), the first heat conduction frame (51) is of an annular structure, the first heat conduction frame (51) is fixedly sleeved at the position of the preheating zone (21), a feeding through groove (511) is formed in the middle position of the top of the first heat conduction frame (51), a feeding inlet (201) is formed in the feeding through groove (511), a first cavity (501) is formed in the first heat conduction frame (51), a first pipe orifice (52) is fixedly arranged on one side of the bottom of the first heat conduction frame (51), the first pipe orifice (52) and the first cavity (501) are mutually communicated, a first liquid inlet pipe (521) is fixedly arranged at the bottom end of the first pipe orifice (52), a second pipe orifice (53) is fixedly arranged at one side, far away from the first pipe orifice (52), of the top of the first heat conduction frame (51), the second pipe orifice (53) is mutually communicated with the first cavity (501), and a first liquid outlet pipe (531) is fixedly arranged at the top of the second pipe orifice (53). The magnetizing mechanism (6) comprises a first circulating pipe orifice (61) and a second circulating pipe orifice (65), the first circulating pipe orifice (61) is fixedly arranged at the top of a material guiding transverse cylinder (2) at the position of the magnetizing area (22), the second circulating pipe orifice (65) is fixedly arranged at the side part of the material guiding transverse cylinder (2) at the position of the magnetizing area (22), the first circulating pipe orifice (61) and the second circulating pipe orifice (65) are communicated with the material guiding transverse cylinder (2), a magnetic inlet pipe (62) is fixedly arranged at the top end of the first circulating pipe orifice (61), an air inlet magnetizing air fan (63) is fixedly arranged at one end, far away from the first circulating pipe orifice (61), of the air inlet magnetizing air fan (63), and a circulating pipeline (64) is fixedly arranged between one end, far away from the magnetic inlet pipe (62), of the air inlet magnetizing air fan (63) and the end of the second circulating pipe orifice (65); the cooling assembly (8) comprises a second heat conduction frame (81), the second heat conduction frame (81) is of an annular structure, the second heat conduction frame (81) is fixedly sleeved at the position of the cooling area (25), a second cavity (801) is formed in the second heat conduction frame (81), a third pipe orifice (82) is fixedly arranged on one side of the top of the second heat conduction frame (81), the third pipe orifice (82) and the second cavity (801) are communicated with each other, a second liquid inlet pipe (821) is fixedly arranged at the top end of the third pipe orifice (82), a fourth pipe orifice (83) is fixedly arranged on one side, far away from the third pipe orifice (82), of the bottom of the second heat conduction frame (81), the fourth pipe orifice (83) and the second cavity (801) are communicated with each other, and a second liquid outlet pipe (831) is fixedly arranged at the bottom end of the fourth pipe orifice (83).
The mixing mechanism (9) comprises a first mixing drum (91), a second mixing drum (92) is fixedly arranged at the bottom end of the first mixing drum (91), a plurality of feeding holes (911) are fixedly arranged at the top of the first mixing drum (91), a driven gear (95) is fixedly arranged at the top end of the second mixing drum (92) and the top end of the feeding hole (201), the bottom of the second mixing drum (92) and the feeding hole (201) are mutually communicated, a first mixing frame (93) is rotatably arranged in the first mixing drum (91), a second mixing frame (94) is rotatably arranged in the second mixing drum (92), the first mixing frame (93) and the second mixing frame (94) are coaxially and fixedly arranged, a crown gear (951) is fixedly arranged at the top end of the first mixing frame (93) in an engaged mode, a first shaft (952) is fixedly arranged at the middle of the crown gear (951), and the first shaft (952) is rotatably arranged at the top end of the first mixing frame (93).
2. The biochar apparatus for repairing heavy metal contaminated soil according to claim 1, wherein: the device is characterized in that an exhaust pipeline (241) is fixedly arranged at the top of the material guiding transverse cylinder (2) at the position of the heating zone (24), a tar collecting frame (242) is fixedly arranged at the bottom of the material guiding transverse cylinder (2) at the position of the heating zone (24), an oil discharging pipe (243) is fixedly arranged at the bottom of the tar collecting frame (242), and a plurality of evenly distributed oil guiding penetrating grooves (244) are formed in the bottom of the material guiding transverse cylinder (2) at the position of the heating zone (24).
3. The biochar apparatus for repairing heavy metal contaminated soil according to claim 1, wherein: the second drain pipe (831) is kept away from one end fixed mounting of fourth mouth of pipe (83) and is had first recovery pipe (13), one end fixed mounting that second drain pipe (831) was kept away from to first recovery pipe (13) has liquid guide pump mechanism (14), one end fixed mounting that first recovery pipe (13) was kept away from to liquid guide pump mechanism (14) has second recovery pipe (15), one end and the tip fixed mounting of first feed liquor pipe (521) that liquid guide pump mechanism (14) were kept away from to second recovery pipe (15).
4. The biochar apparatus for repairing heavy metal contaminated soil according to claim 1, wherein: one end part of the material guiding transverse cylinder (2) close to the preheating zone (21) is fixedly provided with a supporting longitudinal frame (10), and the mixing mechanism (9) is fixedly arranged on the supporting longitudinal frame (10) through a first mixing cylinder (91) and a second mixing cylinder (92).
5. The biochar apparatus for repairing heavy metal contaminated soil according to claim 4, wherein: one side of the supporting underframe (1) close to the supporting longitudinal frame (10) is fixedly provided with a driving motor (11), and the driving end of the driving motor (11) and one end part of the auger guide shaft (4) are coaxially and fixedly arranged.
6. The biochar apparatus for repairing heavy metal contaminated soil according to claim 5, wherein: one side that crown gear (951) was kept away from to first axle (952) is rotated and is installed at the top of supporting longitudinal frame (10), the fixed cover in one end of first axle (952), auger guide shaft (4) is equipped with belt pulley drive group (12), belt pulley drive group (12) include two belt pulleys and activity cup joint the driving belt in two belt pulley outsides, two belt pulleys fixed mounting respectively is at one end of first axle (952), auger guide shaft (4).
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| CN202310551522.XA CN116474726B (en) | 2023-05-16 | 2023-05-16 | Biochar device for repairing heavy metal contaminated soil |
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| CN202310551522.XA CN116474726B (en) | 2023-05-16 | 2023-05-16 | Biochar device for repairing heavy metal contaminated soil |
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| WO2013086742A1 (en) * | 2011-12-16 | 2013-06-20 | Lin Xiumei | Sludge magnetization pyrolyzing treatment device and sludge treatment method |
| CN104858222A (en) * | 2014-02-26 | 2015-08-26 | 武汉金源环保科技工程设备有限公司 | Soil restoration electromagnetic pyrolysis steam rotary furnace |
| CN210825895U (en) * | 2019-07-30 | 2020-06-23 | 赵瑞泉 | Municipal administration mud preparation charcoal pyrolysis processingequipment |
| CN218860535U (en) * | 2023-02-15 | 2023-04-14 | 上海亮慧科技有限公司 | Sectional type electric induction pyrolysis carbonization device for sludge |
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- 2023-05-16 CN CN202310551522.XA patent/CN116474726B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013086742A1 (en) * | 2011-12-16 | 2013-06-20 | Lin Xiumei | Sludge magnetization pyrolyzing treatment device and sludge treatment method |
| CN203498235U (en) * | 2011-12-16 | 2014-03-26 | 林秀梅 | Sludge magnetized pyrolysis treatment device and sludge treatment method |
| CN104858222A (en) * | 2014-02-26 | 2015-08-26 | 武汉金源环保科技工程设备有限公司 | Soil restoration electromagnetic pyrolysis steam rotary furnace |
| CN210825895U (en) * | 2019-07-30 | 2020-06-23 | 赵瑞泉 | Municipal administration mud preparation charcoal pyrolysis processingequipment |
| CN218860535U (en) * | 2023-02-15 | 2023-04-14 | 上海亮慧科技有限公司 | Sectional type electric induction pyrolysis carbonization device for sludge |
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