Lightweight agricultural and forestry waste continuous carbonization device

Abstract

The utility model discloses a light -duty forestry waste continuous carbonization device belongs to carbonization equipment technical field, and this device includes base, carbonization hearth subassembly, power component, heating component and smoke purifier, and the base includes the substrate and a plurality of running wheels, and the smoke purifier includes venturi and the dust removal tower connected with venturi. The utility model carbonization hearth subassembly sets up on the base with running wheel, and the device can be conveniently moved to the specified position, and the forestry waste is handled nearby, and the transportation and manpower cost are reduced, adopt the shell and spiral blade, and the continuous carbonization of raw material is convenient, and the heating component adopts the electric heating wire, and the simple structure is small in size, the smoke purifier includes venturi and the dust removal tower, and the granular dust and acidic gas effect are good, and the activated carbon adsorption box is arranged on the dust removal tower and can adsorb the volatile organic compounds in the gas.

Description

Technical Field

[0001] This utility model belongs to the technical field of carbonization equipment, specifically relating to a lightweight continuous carbonization device for agricultural and forestry waste. Background Technology

[0002] A pyrolysis carbonization furnace is a device used to process waste biomass such as farmland straw and produce biochar. It typically uses firewood, natural gas, or electricity to provide heat, and when the temperature inside the furnace reaches 300℃~700℃, the straw is harmlessly carbonized into biochar. Compared to the ash produced by incinerators, biochar has a high porosity and a large specific surface area, which can effectively improve soil structure and has a strong water and fertilizer retention capacity. Furthermore, biochar contains a high carbon content and abundant mineral elements, which can improve soil fertility when applied to farmland.

[0003] Existing pyrolysis carbonization furnaces are typically large in size and weight, and are mostly located in factory buildings. This requires the waste to be transported to a fixed storage point before being pyrolyzed and carbonized. Fixed carbonization furnaces occupy a large area and incur high costs for transportation and labor. Utility Model Content

[0004] The technical problem solved by this utility model is to provide a lightweight continuous carbonization device for agricultural and forestry waste that can be moved to a designated location for convenient and timely carbonization treatment of agricultural and forestry waste.

[0005] Technical solution: To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A lightweight agricultural and forestry waste continuous carbonization device includes a base, a carbonization furnace assembly connected to the base, a power assembly connected to the carbonization furnace assembly, a heating assembly disposed on the carbonization furnace assembly, and a smoke purifier connected to the carbonization furnace assembly. The base includes a base plate and a plurality of wheels, and the smoke purifier includes a venturi tube and a dust removal tower connected to the venturi tube.

[0007] Furthermore, the carbonization furnace assembly includes a shell, a spiral shaft passing through the shell, and spiral blades disposed on the spiral shaft. The shell is provided with a feed inlet and a discharge outlet. The power assembly includes a drive motor and a reducer connected to the drive motor. The reducer is connected to the spiral shaft.

[0008] Furthermore, the heating assembly includes a heating wire sleeved outside the housing, an insulation sleeve surrounding the heating wire, and a temperature sensor disposed on the housing.

[0009] Furthermore, the shell is provided with a smoke exhaust pipe, and the Venturi tube includes a converging tube, a throat connected to the converging tube, and a diffuser connected to the throat. The smoke exhaust pipe is connected to the converging tube, and the outlet of the diffuser is located inside the dust removal tower.

[0010] Furthermore, the dust removal tower includes a cylindrical body, a circulating pump connected to the cylindrical body, a spray pipe disposed within the cylindrical body, and a packing layer disposed within the cylindrical body. An air outlet is provided at the top of the cylindrical body, and the circulating pump is connected to the spray pipe through a first branch pipe.

[0011] Furthermore, a spray pipe is connected to the contraction tube, the spray pipe extends toward the throat tube, and the circulation pump is connected to the spray pipe through a second branch pipe.

[0012] Furthermore, a demister is provided inside the cylinder, and the demister is located above the spray pipe.

[0013] Furthermore, the air outlet is connected to an activated carbon adsorption box, and the activated carbon adsorption box is provided with a honeycomb activated carbon layer.

[0014] Furthermore, the activated carbon adsorption box is connected to a fan.

[0015] Furthermore, the fan outlet is equipped with a rain cover.

[0016] Beneficial effects: Compared with the prior art, the present invention has the following advantages:

[0017] 1. The carbonization furnace assembly is mounted on a base with wheels, allowing the device to be easily moved to a designated location, facilitating the local processing of agricultural and forestry waste and reducing transportation and labor costs;

[0018] 2. The shell and spiral blades facilitate continuous carbonization of raw materials. The heating element uses electric heating wire, which has a simple structure and small size.

[0019] 3. The fume purifier includes a venturi tube and a dust collection tower, which is effective in removing particulate dust and acidic gases. The dust collection tower is equipped with an activated carbon adsorption box that can adsorb volatile organic compounds in the gas. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the device structure according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the carbonization furnace assembly structure in an embodiment;

[0022] Figure 3 This is a schematic diagram of the smoke purifier structure in an embodiment;

[0023] Figure 4This is a schematic diagram of the Venturi tube structure in the embodiment;

[0024] Figure 5 This is a schematic diagram of the activated carbon adsorption box structure in an embodiment. Detailed Implementation

[0025] The present invention will be further illustrated below with reference to specific embodiments. The embodiments are implemented based on the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0026] like Figure 1 and Figure 3 As shown, a lightweight agricultural and forestry waste continuous carbonization device includes a base 1, a carbonization furnace assembly 2, a power assembly 3, a heating assembly 4, a smoke purifier, an activated carbon adsorption box 7, and a fan 8. The base 1 includes a base plate 11 and multiple wheels 12. The base plate 11 is a horizontally arranged flat plate. The wheels 12 are existing heavy-duty trailer wheels. The four wheels 12 are connected to the bottom of the base plate 11 to support the base plate 11. The base plate 11 is equipped with a trailer shackle, so that the base 1 can be moved by an external vehicle during use.

[0027] like Figure 1 and Figure 2 As shown, the carbonization furnace assembly 2 is mounted on the base 1. The carbonization furnace assembly 2 includes a shell 21, a spiral shaft 22, and spiral blades 23. The shell 21 is a hollow cylindrical shape made of stainless steel and is arranged horizontally. The shell 21 is connected to the base plate 11 by a bracket. The spiral shaft 22 passes through one end of the shell 21 to the other end, and the shell 21 is provided with a bearing corresponding to the spiral shaft 22, so that the spiral shaft 22 is rotatably connected to the shell 21. The spiral blades 23 are mounted on the spiral shaft. The spiral blades 23 are located inside the shell 21 and are mounted on the outer wall of the spiral shaft 22. When the spiral shaft 22 rotates, it drives the spiral blades 23 to rotate, which in turn drives the material inside the shell 21 to move forward. One end of the shell 21 is provided with a feed inlet 211, and a hopper is provided at the feed inlet 211 to facilitate feeding. A filter screen can be installed in the hopper to prevent excessively large foreign objects from entering. The other end of the shell 21 is provided with a discharge outlet 212. The material entering through the feed inlet 211 moves forward under the drive of the spiral blades 23 and is finally discharged from the shell 21 at the discharge outlet 212. The power assembly 3 is connected to the carbonization furnace assembly 2. The power assembly 3 includes a drive motor 31 and a reducer 32. The drive motor 31 is an existing motor, and the reducer 32 is an existing cylindrical gear reducer connected to the drive motor 31. The reducer 32 is connected to the spiral shaft 22, so that when the drive motor 31 is working, it drives the spiral shaft 22 to rotate through the reducer 32.

[0028] like Figure 1As shown, the heating assembly 4 is installed on the carbonization furnace assembly 2. The heating assembly 4 includes a heating wire 41, an insulation sleeve 42, and a temperature sensor 43. Multiple sets of heating wires 41 are provided. The heating wires 41 are sleeved on the outer wall of the shell 21 to heat the shell 21. The insulation sleeve 42 surrounds the heating wires 41 and is made of existing high-temperature fireproof rock wool insulation board. The temperature sensor 43 is an existing thermocouple and is installed on the outer wall of the shell 21 to monitor the temperature of the shell 21. The temperature sensor 43 is electrically connected to an external temperature controller (e.g., a Japanese Fuji PX temperature controller). The heating wires 41 are electrically connected to the temperature controller. The temperature controller controls the operation of the heating wires 41 according to the temperature signal from the temperature sensor 43 to heat the shell 21 to a predetermined temperature.

[0029] like Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, the fume purifier is connected to the carbonization furnace assembly 2. The fume purifier includes a venturi tube 5 and a dust removal tower 6. The venturi tube 5 includes a contraction tube 51, a throat 52, and a diffuser 53 connected in sequence. The diameter of the contraction tube 51 gradually decreases, the diameter is smallest at the throat 52, and the diameter of the diffuser 53 gradually increases. The top of the shell 21 is provided with a flue pipe 213, which has multiple inlets. The outlet of the flue pipe 213 is connected to the side wall of the contraction tube 51. The flue gas inside the shell 21 enters through the flue pipe 213. The liquid enters the shrink tube 51, and a liquid spraying pipe 54 is connected to one end of the shrink tube 51. The liquid spraying pipe 54 extends from the shrink tube 51 toward the throat 52. When the liquid is sprayed out of the liquid spraying pipe 54, the flow velocity is the highest at the throat 52, forming a low-pressure zone. This draws in the flue gas that has entered the shrink tube 51 from the exhaust pipe 213, achieving mixing of liquid and flue gas. Dust particles in the flue gas are captured by the droplets, thereby achieving particulate removal from the flue gas. At the same time, when the liquid is an alkaline solution, the solution reacts with sulfur dioxide in the flue gas, resulting in high desulfurization efficiency. The Venturi tube 5 is inclined, and the outlet of the diffuser 53 is at its lowest point. The outlet of the diffuser 53 is located inside the dust removal tower 6, so that the sprayed gas-liquid mixture enters the dust removal tower 6. The dust removal tower 6 includes a cylinder 61, a circulating pump 62, a spray pipe 63, a packing layer 64, and a demister 65. The cylinder 61 is cylindrical, and the bottom of the cylinder 61 is a liquid collection area that stores the treatment solution, such as an alkaline solution (lime slurry, etc.). The inlet end of the circulating pump 62 is connected to the cylinder 61, and the outlet end of the circulating pump 62 is connected to the spray pipe 63 through a first branch pipe 621. The spray pipe 63 is located inside the cylinder 61 and is equipped with multiple nozzles, so that the solution is sprayed out at the nozzles. The outlet end of the circulating pump 62 is also connected to the liquid spraying pipe 54 through a second branch pipe 622, so that the solution is sprayed out through the liquid spraying pipe 54 and mixed with the flue gas entering the Venturi tube 5. The packing layer 64 is located below the spray pipe 63. The packing material in the packing layer 64 is existing packing balls, such as polypropylene Pall rings. The solution sprayed from the spray pipe 63 is sprayed onto the packing balls. The packing balls can improve the gas-liquid contact efficiency, improve the particulate matter removal effect and desulfurization effect. The gas-liquid mixture sprayed from the outlet of the diffuser 53 is sprayed into the liquid collection area inside the cylinder 61. The flue gas continues to rise, passing through the packing layer 64 and the spray pipe 63. The demister 65 is located at the top of the cylinder 61 and above the spray pipe 63. The demister 65 adopts the existing wire mesh demister. After the gas rises, it passes through the demister 65 to remove liquid droplets. The top of the cylinder 61 is provided with an outlet 611, and the gas is discharged from the outlet 611.

[0030] like Figure 1 , Figure 3 and Figure 5As shown, the air outlet 611 is connected to an activated carbon adsorption box 7. The activated carbon adsorption box 7 is a rectangular box with air inlet at the bottom and air outlet at the top. The activated carbon adsorption box 7 contains two layers of honeycomb activated carbon 71. Gas rises through the two layers of honeycomb activated carbon, which adsorbs harmful substances in the gas, such as volatile organic compounds in flue gas. The outlet at the top of the activated carbon adsorption box 7 is connected to a fan 8. The fan 8 is an existing axial flow fan used to create negative pressure within the activated carbon adsorption box 7 and the dust removal tower 6, guiding the airflow upwards. The outlet at the top of the fan 8 is equipped with a rain cover 81 to prevent external foreign objects or raindrops from falling directly into the fan 8.

[0031] In this embodiment, the device is towed to a predetermined location by an external trailer, facilitating the local processing of agricultural and forestry waste. Crushed straw, branches, fallen leaves, and other agricultural and forestry waste are fed into the shell 21 through the feed inlet 211. The rotating spiral blades 23 push the raw materials forward, and the heating wire 41 heats the shell 21 to a predetermined temperature, allowing the raw materials to be fully pyrolyzed and carbonized in a closed, oxygen-limited furnace. The biochar produced by pyrolysis is pushed to the rear of the furnace and output through the discharge port 212. The flue gas generated in the furnace enters the venturi tube 5 and the dust removal tower 6 through the exhaust pipe 213. After particulate matter removal and desulfurization treatment, the gas rises and passes through the activated carbon adsorption box 7 to adsorb volatile organic compounds and other pollutants in the gas. Finally, it is discharged into the atmosphere by the fan 8.

[0032] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A lightweight continuous carbonization device for agricultural and forestry waste, characterized in that, The device includes a base (1), a carbonization furnace assembly (2) connected to the base (1), a power assembly (3) connected to the carbonization furnace assembly (2), a heating assembly (4) disposed on the carbonization furnace assembly (2), and a smoke purifier connected to the carbonization furnace assembly (2). The base (1) includes a base plate (11) and a plurality of wheels (12). The smoke purifier includes a venturi tube (5) and a dust removal tower (6) connected to the venturi tube (5).

2. The lightweight agricultural and forestry waste continuous carbonization device according to claim 1, characterized in that, The carbonization furnace assembly (2) includes a shell (21), a spiral shaft (22) passing through the shell (21), and spiral blades (23) disposed on the spiral shaft (22). The shell (21) is provided with a feed inlet (211) and a discharge outlet (212). The power assembly (3) includes a drive motor (31) and a reducer (32) connected to the drive motor (31). The reducer (32) is connected to the spiral shaft (22).

3. The lightweight agricultural and forestry waste continuous carbonization device according to claim 2, characterized in that, The heating assembly (4) includes a heating wire (41) sleeved outside the housing (21), an insulation sleeve (42) surrounding the heating wire (41), and a temperature sensor (43) disposed on the housing (21).

4. The lightweight agricultural and forestry waste continuous carbonization device according to claim 2, characterized in that, The housing (21) is provided with a smoke exhaust pipe (213). The Venturi tube (5) includes a converging tube (51), a throat tube (52) connected to the converging tube (51), and a diffuser tube (53) connected to the throat tube (52). The smoke exhaust pipe (213) is connected to the converging tube (51), and the outlet of the diffuser tube (53) is located inside the dust removal tower (6).

5. The lightweight agricultural and forestry waste continuous carbonization device according to claim 4, characterized in that, The dust removal tower (6) includes a cylinder (61), a circulating pump (62) connected to the cylinder (61), a spray pipe (63) disposed in the cylinder (61), and a packing layer (64) disposed in the cylinder (61). The top of the cylinder (61) is provided with an air outlet (611), and the circulating pump (62) is connected to the spray pipe (63) through a first branch pipe (621).

6. The lightweight agricultural and forestry waste continuous carbonization device according to claim 5, characterized in that, The contraction tube (51) is connected to a spray pipe (54), which extends toward the throat (52). The circulation pump (62) is connected to the spray pipe (54) through a second branch pipe (622).

7. The lightweight agricultural and forestry waste continuous carbonization device according to claim 5, characterized in that, The cylinder (61) is equipped with a demister (65), which is located above the spray pipe (63).

8. The lightweight agricultural and forestry waste continuous carbonization device according to claim 5, characterized in that, The air outlet (611) is connected to an activated carbon adsorption box (7), and the activated carbon adsorption box (7) is provided with a honeycomb activated carbon layer (71).

9. The lightweight agricultural and forestry waste continuous carbonization device according to claim 8, characterized in that, The activated carbon adsorption box (7) is connected to the fan (8).

10. The lightweight agricultural and forestry waste continuous carbonization device according to claim 9, characterized in that, The outlet of the fan (8) is equipped with a rain cover (81).

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