CN108822880B - Device for preparing biochar from straw - Google Patents
Device for preparing biochar from straw Download PDFInfo
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- CN108822880B CN108822880B CN201810722498.0A CN201810722498A CN108822880B CN 108822880 B CN108822880 B CN 108822880B CN 201810722498 A CN201810722498 A CN 201810722498A CN 108822880 B CN108822880 B CN 108822880B
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
Abstract
The invention discloses a device for preparing biochar by utilizing straws, which can greatly improve the efficiency and the automation degree of preparing the biochar.
Description
Technical Field
The invention relates to a device for preparing biochar by using straws, and belongs to the technical field of straw carbonization equipment.
Background
The biochar is obtained by carrying out high-temperature treatment on biomass under the anoxic condition, burning oil and gas in the biomass, and leaving the biochar. The biochar is almost pure carbon, can not disappear for hundreds to thousands of years after being buried underground, is equal to the fact that the carbon is sealed in soil, is beneficial to relieving global warming, and has aroused wide interest in the biochar all over the world. Many scientists believe that the carbon element is captured by the biochar stably, the carbon element can be locked underground for hundreds of years, and the soil becomes more fertile; in addition, the emission of greenhouse gases such as nitrogen dioxide, methane and the like can be reduced.
At present, the modern method for making the biochar is to heat plant garbage, such as agricultural garbage of straws and the like, at high temperature in a low-oxygen environment. However, the existing preparation of the straw biochar is generally carried out in a furnace, and due to the fact that the heating temperature is not uniformly controlled and the carbonization of the straw is not uniform, the uniformity of the biochar after preparation is not enough, and the method is not suitable for large-scale production and use of the biochar.
Aiming at the problems, the invention provides a device for preparing biochar by using straws, which improves the carbonization effect of the biochar by using the straws.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: a device for preparing biochar by using straws is characterized by comprising a straw pulverizer, a mixer, an extrusion molding machine, a cutting machine, carbonization equipment and a conveying cooler, wherein the straw pulverizer is connected with the mixer, the mixer is connected to the extrusion molding machine, and the extrusion molding machine extrudes and molds mixed straw materials into a cylindrical rod-shaped structure;
the carbonization equipment comprises a feeding manipulator, a ceramic heating carbonization component, a carbonization heat-preservation cover and a discharging manipulator, wherein the carbonization heat-preservation cover is movably buckled on the ceramic heating carbonization component by adopting a movable driving component so as to be convenient for carbonization heat preservation and feeding and discharging;
the feeding manipulator is arranged on one side, close to the extrusion molding machine, of the ceramic heating carbonization component so as to feed extruded and molded blanks with cylindrical rod-shaped structures onto the ceramic heating carbonization component;
the discharging manipulator is arranged at one side close to the conveying cooler so as to convey the carbonized rod to the conveying cooler for transportation and cooling;
the ceramic heating carbonization assembly comprises a ceramic carbonization disc capable of intermittently rotating, blank carbonization holes for accommodating blanks are arranged on the ceramic carbonization disc in a circumferential array mode, and the blank carbonization holes extend along the radial direction of the ceramic carbonization disc;
the carbonization equipment is used for carbonizing in an anoxic environment.
Further, preferably, the moving driving assembly comprises a driving rack, a driving gear set, a guide sliding seat and a fixed frame, the fixed frame is fixed on the frame, the driving gear set is rotatably arranged on the frame, the fixed frame is provided with a guide sliding seat, the lower end of the driving rack is connected to the upper end surface of the center of the carbonization heat-preservation cover, a sliding groove which is matched with the guide sliding seat to slide is arranged on one side of the driving rack opposite to the teeth, the driving rack and the frame can vertically slide up and down, the frame is rotatably provided with a driving gear set, the driving gear set is in meshing transmission with the driving rack, the driving gear set is driven by a forward and reverse rotating motor driven by movement, the driving gear set rotates to drive the driving rack to move up and down, and then the carbonized heat-insulating cover is driven to be removed and covered.
Further, as preferred, the drive gear group at least comprises a first gear and a second gear which are the same, the first gear and the second gear are arranged up and down, a shaft of the first gear and a shaft of the second gear are in belt pulley transmission connection and are in meshing transmission with the drive rack, and the first gear or the second gear and the movement drive forward and reverse rotation motor are in speed reducer connection.
Further, preferably, the carbonization heat-preservation cover is provided with a steam-dissipating hole right above the ceramic carbonization disc.
Further, as a preferred option, the lower end face of the ceramic carbonization disc is fixedly arranged on an intermittent rotation assembly, the intermittent rotation assembly comprises an intermittent rotation disc, a rotation driving shaft, a hollow sleeve, a base, a driving disc and a driving wheel, wherein the base is internally provided with the rotatable driving wheel driven by a driving motor, the driving wheel is in driving connection with the driving disc, the driving wheel drives the driving disc to rotate intermittently, the center of the driving disc is fixedly sleeved with the rotation driving shaft, the hollow sleeve is fixed on the base and extends along the central axial direction of the rotation driving shaft, the rotation driving shaft is sleeved in the hollow sleeve by a supporting sleeve which can rotate by a bearing, the upper end of the rotation driving shaft extends out of the hollow sleeve to be arranged, and the upper end face of the rotation driving shaft is fixedly provided with the intermittent rotation disc, the ceramic carbonization disc is fixed on the intermittent rotating disc.
Further, as preferred, still the circumference array is provided with along the temperature monitoring stick that its radial direction extends on the disk body of ceramic carbonization dish, it still is provided with the electrical heating stick to lie in between two adjacent blank carbomorphism holes in the ceramic carbonization dish, electrical heating stick and temperature monitoring stick all are connected with the carbomorphism controller.
Further, as preferred, be provided with the multilayer blank carbomorphism hole of vertical evenly arranged on the ceramic carbonization dish, each layer blank carbomorphism hole is vertical just right upper and lower the arranging, be provided with a plurality of ventholes with blank carbomorphism hole intercommunication on the pore wall of blank carbomorphism hole, the venthole is vertical to be arranged, and every venthole is with upper and lower adjacent blank carbomorphism hole intercommunication.
Further, as preferred, the material loading manipulator includes material loading lifing arm, material loading digging arm, snatchs the dish and snatchs the claw, the material loading lifing arm is fixed on the base, but be provided with three-dimensional moving's material loading digging arm on the material loading lifing arm, be provided with on the material loading digging arm and snatch the dish, the tip of snatching the dish is provided with a plurality of claws of snatching of arranging side by side, and two adjacent distances of snatching the claw are unanimous with the distance in upper and lower adjacent two-layer blank carbomorphism hole, and the number of snatching the claw is the same with the number of piles in blank carbomorphism hole to carry out the material loading to each layer carbomorphism.
Further, as preferred, the unloading manipulator includes unloading lifing arm, unloading digging arm, snatchs the dish and snatchs the claw, the unloading lifing arm is fixed on the base, but be provided with three-dimensional moving's unloading digging arm on the unloading lifing arm, be provided with on the unloading digging arm and snatch the dish, the tip of snatching the dish is provided with a plurality of claws of snatching of arranging side by side, and two adjacent distances of snatching the claw are unanimous with the distance in the adjacent two-layer blank carbomorphism hole from top to bottom, and the number of snatching the claw is the same with the number of piles in blank carbomorphism hole to carry out the unloading to each layer carbo.
Further, as preferred, extrusion moulding machine arranges in one side of cutter, the cutter is including cutting off the frame, extending frame and conveyer belt, it fixes to extend the frame cut off in the frame and extend to the position that is close to material loading manipulator of carbomorphism equipment, be provided with the conveyer belt on the extending frame, the conveyer belt is located under the cutting tool of cutter, through the conveyer belt realizes the transport to the blank
Compared with the prior art, the invention has the beneficial effects that:
the device for preparing the biochar by the straws can greatly improve the efficiency and the automation degree of the biochar preparation, adopts the rotatable ceramic carbonization disk for carbonization, not only can ensure the accurate control of the carbonization temperature, but also can realize automatic feeding and discharging, reduce the labor intensity of workers, and simultaneously, the straw blank rods to be carbonized are arranged in the ceramic carbonization disk in the radial direction, so that the occupied space can be reduced, each straw blank can be accurately and uniformly carbonized, the carbonization effect is better, the carbonization performance is ensured, and in the carbonization process, the accurate temperature monitoring and control can be carried out, and the carbonization effect is ensured.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus for preparing biochar from straw according to the present invention;
FIG. 2 is a schematic structural diagram of a carbonization device of an apparatus for preparing biochar from straw according to the present invention;
FIG. 3 is a schematic horizontal sectional top view of a ceramic carbonization disc of the device for preparing biochar from straw according to the present invention;
FIG. 4 is a schematic structural diagram of a cutting machine of the device for preparing biochar from straw according to the invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a device for preparing biochar by using straws comprises a straw pulverizer, a mixer, an extrusion molding machine 19, a cutting machine 20, carbonization equipment and a conveying cooler 16, wherein the straw pulverizer is connected with the mixer, the mixer is connected to the extrusion molding machine 19, and the extrusion molding machine 19 extrudes and molds mixed straw materials into a cylindrical rod-shaped structure;
the carbonization equipment comprises a feeding manipulator 6, a ceramic heating carbonization component, a carbonization heat-preservation cover 8 and a discharging manipulator 7, wherein the carbonization heat-preservation cover 8 is movably buckled on the ceramic heating carbonization component by adopting a movable driving component so as to be convenient for carbonization heat preservation and feeding and discharging;
the feeding manipulator 6 is arranged on one side of the ceramic heating carbonization component close to the extrusion molding machine so as to feed the extruded and molded blank with the cylindrical rod-shaped structure onto the ceramic heating carbonization component;
the blanking manipulator 7 is arranged at one side close to the conveying cooler so as to convey the carbonized rod to the conveying cooler for transportation and cooling;
the ceramic heating carbonization assembly comprises a ceramic carbonization disc 5 capable of intermittently rotating, blank carbonization holes for accommodating blanks 32 are arranged on the ceramic carbonization disc 5 in a circumferential array mode, and the blank carbonization holes extend along the radial direction of the ceramic carbonization disc;
the carbonization equipment is used for carbonizing in an anoxic environment.
Wherein the moving driving component comprises a driving rack 10, a driving gear set, a guide sliding seat 11 and a fixed frame 12, the fixed frame 12 is fixed on the frame, the driving gear set is rotatably arranged on the frame, a guide sliding seat 11 is arranged on the fixed frame 12, the lower end of the driving rack 10 is connected to the upper end surface of the center of the carbonization heat-preservation cover, a sliding groove which is matched with the guide sliding seat 11 to slide is arranged on one side of the driving rack 10 opposite to the teeth, the driving rack 10 and the frame can vertically slide up and down, the frame is rotatably provided with a driving gear set, the driving gear set is in meshing transmission with the driving rack, the driving gear set is driven by a forward and reverse rotating motor driven by movement, the driving gear set rotates to drive the driving rack to move up and down, and then the carbonized heat-insulating cover is driven to be removed and covered.
In this embodiment, the driving gear set at least comprises a first gear 13 and a second gear 14 which are the same, the first gear and the second gear are arranged up and down, a shaft of the first gear and a shaft of the second gear are in transmission connection through a belt pulley and a belt 15 and are in meshing transmission with the driving rack, and the first gear or the second gear and the movement driving forward and reverse motor are in speed reducer connection. And a steam release hole 9 is arranged on the carbonization heat-preservation cover and is positioned right above the ceramic carbonization disc.
As a preferred embodiment, the lower end surface of the ceramic carbonization disc 5 is fixedly arranged on an intermittent rotation assembly, the intermittent rotation assembly comprises an intermittent rotation disc 4, a rotation driving shaft 3, a hollow sleeve 28, a base 1, a driving disc 29 and a driving wheel 2, wherein the base 1 is internally provided with the rotatable driving wheel 2 driven by a driving motor, the driving wheel 2 is in driving connection with the driving disc 29, the driving wheel 2 drives the driving disc to rotate intermittently, the center of the driving disc 29 is fixedly sleeved with the rotation driving shaft 3, the hollow sleeve 28 is fixed on the base and extends along the central axial direction of the rotation driving shaft, the rotation driving shaft 3 is rotatably sleeved in the hollow sleeve by a bearing, the upper end of the rotation driving shaft 3 extends out of the hollow sleeve, the upper end face of the rotating driving shaft is fixedly provided with the intermittent rotating disc 4, and the ceramic carbonization disc 5 is fixed on the intermittent rotating disc 4 by a fixing piece 30.
Still the circumference array is provided with along the temperature monitoring stick 27 that its radial direction extends on the disk body 31 of ceramic carbonization dish 5, it still is provided with electrical heating rod 34 to lie in between two adjacent blank carbomorphism holes in the ceramic carbonization dish, electrical heating rod and temperature monitoring stick all are connected with the carbomorphism controller.
The ceramic carbonization disc is provided with a plurality of layers of blank carbonization holes which are vertically and uniformly arranged, the blank carbonization holes of each layer are vertically and rightly arranged from top to bottom, the hole wall of each blank carbonization hole is provided with a plurality of air outlet holes 33 communicated with the blank carbonization holes, the air outlet holes 33 are vertically arranged, and each air outlet hole 33 is communicated with the blank carbonization holes which are vertically adjacent.
The material loading manipulator includes material loading lifing arm 24, material loading digging arm 25, snatchs a set 26 and snatchs the claw, material loading lifing arm 24 fixes on the base, but be provided with three-dimensional removal's material loading digging arm 25 on the material loading lifing arm 24, it snatchs a set 26 to be provided with on the material loading digging arm 25, the tip of snatching the dish is provided with a plurality of claws of snatching of arranging side by side, and two adjacent distances of snatching the claw are unanimous with the distance in upper and lower adjacent two-layer blank carbomorphism hole, and the number of snatching the claw is the same with the number of piles in blank carbomorphism hole to carry out the material loading to each layer carbomorph.
The unloading manipulator includes unloading lifing arm 22, unloading digging arm 23, snatchs the dish and snatchs the claw, the unloading lifing arm is fixed on the base, but be provided with three-dimensional removal's unloading digging arm 23 on the unloading lifing arm 22, be provided with on the unloading digging arm and snatch the dish, the tip of snatching the dish is provided with a plurality of claws of snatching of arranging side by side, and two adjacent distances of snatching the claw are unanimous with the distance in the adjacent two-layer blank carbomorphism hole from top to bottom, and the number of snatching the claw is the same with the number of piles in blank carbomorphism hole to carry out the unloading to each layer.
As shown in fig. 4, the extrusion molding machine is arranged at one side of a cutting machine, the cutting machine comprises a cutting frame 18, an extension frame 17 and a conveyor belt 21, the extension frame 17 is fixed on the cutting frame and extends to the position of the carbonization equipment close to the feeding manipulator, the extension frame 17 is provided with the conveyor belt 21, the conveyor belt is positioned right below a cutting tool 20 of the cutting machine, and the conveying of the blank is realized through the conveyor belt.
The device for preparing the biochar by the straws can greatly improve the efficiency and the automation degree of the biochar preparation, adopts the rotatable ceramic carbonization disk for carbonization, not only can ensure the accurate control of the carbonization temperature, but also can realize automatic feeding and discharging, reduce the labor intensity of workers, and simultaneously, the straw blank rods to be carbonized are arranged in the ceramic carbonization disk in the radial direction, so that the occupied space can be reduced, each straw blank can be accurately and uniformly carbonized, the carbonization effect is better, the carbonization performance is ensured, and in the carbonization process, the accurate temperature monitoring and control can be carried out, and the carbonization effect is ensured.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A device for preparing biochar by using straws is characterized by comprising a straw pulverizer, a mixer, an extrusion molding machine, a cutting machine, carbonization equipment and a conveying cooler, wherein the straw pulverizer is connected with the mixer, the mixer is connected to the extrusion molding machine, and the extrusion molding machine extrudes and molds mixed straw materials into a cylindrical rod-shaped structure;
the carbonization equipment comprises a feeding manipulator, a ceramic heating carbonization component, a carbonization heat-preservation cover and a discharging manipulator, wherein the carbonization heat-preservation cover is movably buckled on the ceramic heating carbonization component by adopting a movable driving component so as to be convenient for carbonization heat preservation and feeding and discharging;
the feeding manipulator is arranged on one side, close to the extrusion molding machine, of the ceramic heating carbonization component so as to feed extruded and molded blanks with cylindrical rod-shaped structures onto the ceramic heating carbonization component;
the discharging manipulator is arranged at one side close to the conveying cooler so as to convey the carbonized rod to the conveying cooler for transportation and cooling;
the ceramic heating carbonization assembly comprises a ceramic carbonization disc capable of intermittently rotating, blank carbonization holes for accommodating blanks are arranged on the ceramic carbonization disc in a circumferential array mode, and the blank carbonization holes extend along the radial direction of the ceramic carbonization disc;
the carbonization equipment is used for carbonizing in an anoxic environment;
go back the circumference array on the disk body of ceramic carbonization dish and be provided with along the temperature monitoring stick that its radial direction extends, it still is provided with the electrical heating stick to lie in between two adjacent blank carbomorphism holes in the ceramic carbonization dish, electrical heating stick and temperature monitoring stick all are connected with the carbomorphism controller.
2. The device for preparing biochar by utilizing straws as claimed in claim 1, is characterized in that: remove drive assembly including drive rack, drive gear group, direction slide and mount, the mount is fixed in the frame, the rotatable setting of drive gear group is in the frame, be provided with the direction slide on the mount, the lower extreme of drive rack is connected to carbomorphism heat preservation cover center up end, one side that drive rack is relative with the tooth be provided with the gliding spout of direction slide cooperation, vertical gliding setting about drive rack and frame can, the rotatable drive gear group that is provided with in the frame, drive gear group with drive rack meshing transmission, drive gear group adopts the positive motor drive that rotates of removal drive, and the rotation through drive gear group drives drive rack and reciprocates, and then drives removal and covering of carbomorphism heat preservation cover.
3. The device for preparing biochar by utilizing straws as claimed in claim 2, is characterized in that: the driving gear set at least comprises a first gear and a second gear which are the same, the first gear and the second gear are arranged up and down, a shaft of the first gear is in transmission connection with a shaft of the second gear through a belt pulley, the first gear and the second gear are in meshing transmission with a driving rack, and the first gear or the second gear and a forward and reverse motor of the moving driving are in speed reducer connection.
4. The device for preparing biochar by utilizing straws as claimed in claim 2, is characterized in that: and a steam release hole is arranged on the carbonization heat-preservation cover and is positioned right above the ceramic carbonization disc.
5. The device for preparing biochar by utilizing straws as claimed in claim 2, is characterized in that: the lower end surface of the ceramic carbonization disc is fixedly arranged on an intermittent rotating assembly, the intermittent rotating assembly comprises an intermittent rotating disc, a rotating driving shaft, a hollow sleeve, a base, a driving disc and a driving wheel, wherein, the base is internally provided with a rotatable driving wheel driven by a driving motor, the driving wheel is in driving connection with the driving disc, the driving wheel drives the driving disk to rotate intermittently, the center of the driving disk is fixedly sleeved with the rotating driving shaft, the hollow sleeve is fixed on the base, and the hollow sleeve extends along the central axial direction of the rotating driving shaft, the rotating driving shaft is rotatably sleeved in the hollow sleeve by adopting a bearing, the upper end of the rotating driving shaft extends out of the hollow sleeve, the intermittent rotating disc is fixedly arranged on the upper end face of the rotating driving shaft, and the ceramic carbonization disc is fixed on the intermittent rotating disc.
6. The device for preparing biochar by utilizing straws as claimed in claim 1, is characterized in that: the ceramic carbonization disc is provided with a plurality of layers of blank carbonization holes which are vertically and uniformly arranged, the blank carbonization holes of each layer are vertically and rightly arranged from top to bottom, the hole wall of each blank carbonization hole is provided with a plurality of air outlet holes communicated with the blank carbonization holes, the air outlet holes are vertically arranged, and each air outlet hole is communicated with the blank carbonization holes which are vertically adjacent.
7. The device for preparing biochar by utilizing straws as claimed in claim 1, is characterized in that: the material loading manipulator includes material loading lifing arm, material loading digging arm, snatchs the dish and snatchs the claw, the material loading lifing arm is fixed on the base, but be provided with three-dimensional moving's material loading digging arm on the material loading lifing arm, be provided with on the material loading digging arm and snatch the dish, the tip of snatching the dish is provided with a plurality of claws of snatching of arranging side by side, and two adjacent distances of snatching the claw are unanimous with the distance in upper and lower adjacent two-layer blank carbomorphism hole, and the number of snatching the claw is the same with the number of piles in blank carbomorphism hole to carry out the material loading to each layer carbomorph.
8. The device for preparing biochar by utilizing straws as claimed in claim 1, is characterized in that: the unloading manipulator includes unloading lifing arm, unloading digging arm, snatchs the dish and snatchs the claw, the unloading lifing arm is fixed on the base, but be provided with three-dimensional removal's unloading digging arm on the unloading lifing arm, be provided with on the unloading digging arm and snatch the dish, the tip of snatching the dish is provided with a plurality of claws of snatching of arranging side by side, and two adjacent distances of snatching the claw are unanimous with the distance in the adjacent two-layer blank carbomorphism hole from top to bottom, and the number of snatching the claw is the same with the number of piles in blank carbomorphism hole to carry out the unloading to each layer.
9. The device for preparing biochar by utilizing straws as claimed in claim 1, is characterized in that: extrusion moulding machine arranges the one side at the cutter, the cutter is including cutting off the frame, extending frame and conveyer belt, it fixes to extend the frame cut off in the frame and extend to the position that is close to material loading manipulator of carbomorphism equipment, be provided with the conveyer belt on the extending frame, the conveyer belt is located under the cutting tool of cutter, through the conveyer belt realizes the transport to the blank.
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| CN201810722498.0A CN108822880B (en) | 2018-07-04 | 2018-07-04 | Device for preparing biochar from straw |
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| CN201810722498.0A CN108822880B (en) | 2018-07-04 | 2018-07-04 | Device for preparing biochar from straw |
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| CN108822880B true CN108822880B (en) | 2020-10-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110041944B (en) * | 2019-05-17 | 2020-10-30 | 安徽科技学院 | Novel production of charcoal base soil conditioner device |
| CN110182782B (en) * | 2019-06-04 | 2020-04-17 | 兰州大学 | Environment-friendly device for preparing straw biochar by hydrothermal method |
| HUE063888T2 (en) * | 2020-06-04 | 2024-02-28 | Reimund Schuster | Device for producing vegetable charcoal by pyrolysis of biomass |
| CN115501952B (en) * | 2022-11-09 | 2023-10-20 | 安徽科技学院 | Iron-based biochar grinding device |
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