Carbonization device for agroforestry biomass

Abstract

The utility model relates to the field of agroforestry biomass technology discloses agroforestry biomass carbonization device. The agroforestry biomass carbonization device mentioned in the utility model guides the pyrolysis gas generated in the carbonization process into the inside of two combustion chambers, carries out combustion under the action of the igniter, the high-temperature flue gas generated by combustion is first used as heat source to supply the heating chamber of carbonization reactor, continuously heats the pyrolysis reaction chamber, makes the high-temperature flue gas cool into medium-temperature flue gas, and then uses the high-temperature flue gas as heat source to carry out secondary heating to the pyrolysis reaction chamber, compared with direct high-temperature flue gas discharge, can improve the utilization efficiency of energy, reduces the use of device electric energy or fossil fuel.

Description

Technical Field

[0001] This utility model relates to the field of agricultural and forestry biomass technology, specifically to an agricultural and forestry biomass charcoal production device. Background Technology

[0002] Using agricultural and forestry biomass waste (such as straw, rice husks, fruit tree branches, etc.) to prepare high-value-added biochar products can not only achieve carbon sequestration and emission reduction, but also improve soil fertility and pollution remediation capabilities.

[0003] Currently, mobile carbonization furnaces are mainly used for the carbonization of agricultural and forestry biomass. These furnaces typically consist of a carbonization chamber, a heating system, a flue gas emission system, and a mobile chassis. Designed for mobility, they facilitate on-site carbonization in areas with concentrated agricultural and forestry waste. Their working principle involves heating the carbonization chamber with an external heat source (such as electricity or fossil fuels), causing the biomass to pyrolyze into biochar under anaerobic conditions. The equipment generally includes structural components such as a carbonization furnace body, inlet, outlet, hot air circulation system, and exhaust port. It is suitable for small-scale carbonization of agricultural and forestry waste and offers a degree of flexibility in on-site operations.

[0004] However, traditional mobile carbonization furnaces require a continuous external supply of heat energy from electricity or fossil fuels, and lack an effective mechanism for recovering waste heat from high-temperature flue gas, resulting in a large amount of heat energy being directly emitted with the flue gas, causing energy waste. Utility Model Content

[0005] In view of this, the present invention provides an agricultural and forestry biomass charcoal production device to solve the problem of energy waste that occurs in traditional mobile carbonization furnaces.

[0006] The agricultural and forestry biomass charcoal production device provided by this utility model includes a carbonization reactor, a secondary combustion chamber, and a dryer. The carbonization reactor has a pyrolysis reaction chamber and a heating chamber. The pyrolysis reaction chamber has a pyrolysis reaction chamber outlet. The heating chamber surrounds the pyrolysis reaction chamber and has a heating chamber inlet and a heating chamber outlet. The secondary combustion chamber has a combustion chamber and an igniter. The combustion chamber has a first combustion chamber inlet and a combustion chamber outlet. The first combustion chamber inlet communicates with the pyrolysis reaction chamber outlet, and the combustion chamber outlet communicates with the heating chamber inlet. The igniter is installed inside the combustion chamber. The dryer has a drying chamber with a drying chamber inlet, which communicates with the heating chamber outlet.

[0007] Beneficial Effects: This device introduces the pyrolysis gas generated during carbonization into the secondary combustion chamber, where it is combusted under the action of an igniter. The high-temperature flue gas produced during combustion first serves as a heat source to supply the heating chamber of the carbonization reactor, continuously heating the pyrolysis reaction chamber. This cools the high-temperature flue gas to a medium-temperature flue gas, which then serves as a heat source for secondary heating of the pyrolysis reaction chamber. Compared to directly discharging the high-temperature flue gas, this improves energy utilization efficiency and reduces the use of electricity or fossil fuels. Simultaneously, the medium-temperature flue gas enters the drying chamber of the dryer for pre-drying of agricultural and forestry biomass. Finally, the low-temperature flue gas is discharged from the system, achieving a stepped conversion and utilization of thermal energy from high temperature to medium temperature and then to low temperature, allowing the thermal energy to be used effectively for work. Furthermore, introducing the pyrolysis gas into the secondary combustion chamber for high-temperature combustion enables the harmless treatment of waste gas, reducing the emission of harmful substances and achieving environmental protection.

[0008] In one optional embodiment, the dryer is provided with a water-cooled jacket, which covers the outside of the drying chamber. The water-cooled jacket is provided with a water inlet and an outlet. The agricultural and forestry biomass charcoal production device further includes a cooling tower, which includes a cooling chamber. The cooling chamber is provided with a first outlet and an inlet. The first outlet is connected to the water inlet of the water-cooled jacket, and the inlet is connected to the outlet of the water-cooled jacket.

[0009] In one optional embodiment, the carbonization reactor is provided with a carbonization reactor water-cooling jacket, which covers the outside of the pyrolysis reaction chamber. The carbonization reactor water-cooling jacket is provided with a carbonization reactor water-cooling jacket inlet and a carbonization reactor water-cooling jacket outlet. The carbonization reactor water-cooling jacket inlet is connected to the dryer water-cooling jacket outlet, and the carbonization reactor water-cooling jacket outlet is connected to the cooling chamber inlet.

[0010] In one optional embodiment, the secondary combustion chamber is provided with a secondary combustion chamber water-cooling jacket, which covers the outside of the combustion chamber. The secondary combustion chamber water-cooling jacket is provided with a secondary combustion chamber water-cooling jacket inlet and a secondary combustion chamber water-cooling jacket outlet. The secondary combustion chamber water-cooling jacket inlet is connected to the carbonization reactor water-cooling jacket outlet, and the secondary combustion chamber water-cooling jacket outlet is connected to the cooling chamber inlet.

[0011] In one optional embodiment, the cooling chamber is further provided with a cooling chamber water inlet, which is connected to a water source.

[0012] In one optional embodiment, the cooling tower is further provided with a first metering pump, which is installed between the water inlet of the cooling chamber and the water source along the water supply path.

[0013] In one optional embodiment, the drying chamber is provided with a drying chamber inlet and a drying chamber outlet, the drying chamber inlet being connected to the end of the feeding mechanism; the pyrolysis reaction chamber is provided with a pyrolysis reaction chamber inlet, a pyrolysis reaction chamber outlet, and a pyrolysis reaction chamber water inlet, the pyrolysis reaction chamber inlet being connected to the drying chamber outlet; the cooling chamber is provided with a second cooling chamber water outlet, the second cooling chamber water outlet being connected to the pyrolysis reaction chamber water inlet; the agricultural and forestry biomass charcoal making device further includes a cooling chamber, the cooling chamber being provided with a cooling chamber inlet and a cooling chamber outlet, the cooling chamber inlet being connected to the pyrolysis reaction chamber outlet, and the cooling chamber outlet being connected to the pyrolysis reaction chamber inlet.

[0014] In one optional embodiment, a plurality of alternating folding plates are arranged in the combustion chamber. In two adjacent folding plates, the bottom end of one folding plate is connected to the bottom wall of the combustion chamber and the top end is spaced apart from the top wall of the combustion chamber. The top end of the other folding plate is connected to the top wall of the combustion chamber and the bottom end is spaced apart from the bottom wall of the combustion chamber, so as to splice together to form a continuous and meandering combustion channel.

[0015] In one optional embodiment, along the extension direction of the combustion flow channel, the combustion chamber is provided with a plurality of spaced-apart second air inlets; the second combustion chamber is provided with a second combustion chamber combustion-supporting fan, and the second combustion chamber combustion-supporting fan is connected to the plurality of second air inlets of the combustion chamber.

[0016] In one optional embodiment, the combustion chamber is further provided with a third air inlet, the end of which extends into the interior of the combustion chamber; the secondary combustion chamber is further provided with a nozzle, which is installed at the end of the third air inlet. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the specific embodiments of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of the agricultural and forestry biomass charcoal production device provided in this embodiment of the utility model; Figure 2 A schematic diagram of the carbonization reactor in the agricultural and forestry biomass charcoal production device provided in this embodiment of the utility model; Figure 3 A schematic diagram of the secondary combustion chamber in the agricultural and forestry biomass charcoal production device provided in this embodiment of the utility model; Figure 4 A schematic diagram of the structure of the dryer in the agricultural and forestry biomass charcoal production device provided in this embodiment of the utility model; Figure 5 A schematic diagram of the cooling tower in the agricultural and forestry biomass charcoal production device provided in this embodiment of the utility model.

[0019] Explanation of reference numerals in the attached figures: 1. Carbonization reactor; 11. Pyrolysis reaction chamber; 111. Pyrolysis reaction chamber outlet; 112. Pyrolysis reaction chamber feed inlet; 113. Pyrolysis reaction chamber discharge outlet; 114. Pyrolysis reaction chamber water inlet; 12. Heating chamber; 121. Heating chamber air inlet; 122. Heating chamber air outlet; 13. Carbonization reactor water-cooled jacket; 131. Carbonization reactor water-cooled jacket water inlet; 132. Carbonization reactor water-cooled jacket water outlet; 2. Secondary combustion chamber; 21. Combustion chamber; 211. First air inlet of combustion chamber; 212. Air outlet of combustion chamber; 213. Second air inlet of combustion chamber; 214. Third air inlet of combustion chamber; 22. Igniter; 23. Secondary combustion chamber water-cooled jacket; 231. Water inlet of secondary combustion chamber water-cooled jacket; 232. Water outlet of secondary combustion chamber water-cooled jacket; 24. Baffle plate; 25. Secondary combustion chamber combustion fan; 26. Nozzle; 27. First high-temperature induced draft fan; 28. Air inlet valve; 3. Dryer; 31. Drying chamber; 311. Air inlet of drying chamber; 312. Material outlet of drying chamber; 313. Material inlet of drying chamber; 314. Air outlet of drying chamber; 32. Water-cooled jacket of dryer; 321. Water inlet of water-cooled jacket of dryer; 322. Water outlet of water-cooled jacket of dryer; 33. Second high-temperature induced draft fan; 34. Chimney; 4. Cooling tower; 41. Cooling chamber; 411. Cooling chamber inlet; 412. Cooling chamber first outlet; 413. Cooling chamber makeup inlet; 414. Cooling chamber second outlet; 416. Steam outlet; 42. First metering pump; 43. Second metering pump; 44. Circulation pump; 5. Feeding mechanism; 51. Feeding hopper; 52. Conveyor belt; 6. Cooling chamber; 7. Feed / discharge controller; 8. Control box. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] The following is combined with Figures 1 to 5 The following describes embodiments of the present invention.

[0022] According to embodiments of the present invention, such as Figure 1 As shown, the provided agricultural and forestry biomass charcoal production device includes a carbonization reactor 1, a secondary combustion chamber 2, and a dryer 3.

[0023] like Figures 1 to 4 As shown, the carbonization reactor 1 is provided with a pyrolysis reaction chamber 11 and a heating chamber 12. The pyrolysis reaction chamber 11 is provided with a pyrolysis reaction chamber outlet 111. The heating chamber 12 covers the outside of the pyrolysis reaction chamber 11 and is provided with a heating chamber inlet 121 and a heating chamber outlet 122. The secondary combustion chamber 2 is provided with a combustion chamber 21 and an igniter 22. The combustion chamber 21 is provided with a combustion chamber first inlet 211 and a combustion chamber outlet 212. The combustion chamber first inlet 211 is connected to the pyrolysis reaction chamber outlet 111, and the combustion chamber outlet 212 is connected to the heating chamber inlet 121. The igniter 22 is installed inside the combustion chamber 21. The dryer 3 is provided with a drying chamber 31. The drying chamber 31 is provided with a drying chamber inlet 311, and the drying chamber inlet 311 is connected to the heating chamber outlet 122.

[0024] With this setup, the pyrolysis gas generated during carbonization is introduced into the secondary combustion chamber 2 and combusted under the action of the igniter 22. The high-temperature flue gas generated by combustion is first supplied as a heat source to the heating chamber 12 of the carbonization reactor 1 to continuously heat the pyrolysis reaction chamber 11, so that the high-temperature flue gas is cooled to medium-temperature flue gas, and then used as a heat source to reheat the pyrolysis reaction chamber 11. Compared with the direct discharge of high-temperature flue gas, this can improve the energy utilization efficiency and reduce the use of electrical energy or fossil fuels in the device.

[0025] Meanwhile, the medium-temperature flue gas is then introduced into the drying chamber 31 of the dryer 3 to pre-dry the agricultural and forestry biomass. Finally, the low-temperature flue gas is discharged from the system, realizing the step-by-step conversion and utilization of thermal energy from high temperature to medium temperature and then to low temperature, so that the thermal energy can be used to do work effectively.

[0026] In addition, introducing pyrolysis gas into the secondary combustion chamber 2 for high-temperature combustion can achieve the harmless treatment of waste gas, reduce the emission of harmful substances, and achieve environmental protection.

[0027] It can be explained that a first high-temperature induced draft fan 27 is added between the first air inlet 211 of the combustion chamber and the air outlet 111 of the pyrolysis reaction chamber to provide power for the pyrolysis gas to move to the combustion chamber 21.

[0028] It can be explained that a second high-temperature induced draft fan 33 is added between the air inlet 311 of the drying chamber and the air outlet 122 of the heating chamber to provide power for the medium-temperature flue gas to move from the heating chamber 12 to the drying chamber 31.

[0029] In one embodiment, such as Figure 1 , Figure 4 and Figure 5 As shown, the dryer 3 is provided with a dryer water-cooling jacket 32, which covers the outside of the drying chamber 31. The dryer water-cooling jacket 32 ​​is provided with a dryer water-cooling jacket inlet 321 and a dryer water-cooling jacket outlet 322. The agricultural and forestry biomass charcoal making device also includes a cooling tower 4, which includes a cooling chamber 41. The cooling chamber 41 is provided with a cooling chamber first outlet 412 and a cooling chamber inlet 411. The cooling chamber first outlet 412 is connected to the dryer water-cooling jacket inlet 321, and the cooling chamber inlet 411 is connected to the dryer water-cooling jacket outlet 322.

[0030] With this setup, cooling water first enters the water-cooled jacket 32 ​​of the dryer, initially absorbing the heat energy transferred to the outer wall of the dryer 3 during the drying process. This quickly and accurately maintains the temperature of the drying chamber 31 at a low level, meeting the requirements of the drying process, preventing the temperature of the drying chamber 31 from becoming too high, ensuring a stable drying process, and ensuring that the quality of the final product meets the usage requirements.

[0031] In one embodiment, such as Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the carbonization reactor 1 is equipped with a carbonization reactor water-cooling jacket 13, which covers the outside of the pyrolysis reaction chamber 11. The carbonization reactor water-cooling jacket 13 is equipped with a carbonization reactor water-cooling jacket inlet 131 and a carbonization reactor water-cooling jacket outlet 132. The carbonization reactor water-cooling jacket inlet 131 is connected to the dryer water-cooling jacket outlet 322, and the carbonization reactor water-cooling jacket outlet 132 is connected to the cooling chamber inlet 411.

[0032] With this configuration, by adding a carbonization reactor water-cooling jacket 13 between the dryer water-cooling jacket 32 ​​and the cooling tower 4, the cooling water inside the dryer water-cooling jacket 32 ​​can enter the carbonization reactor water-cooling jacket 13 after heat exchange. Compared with the scheme where the cooling water directly enters the carbonization reactor water-cooling jacket 13, the temperature difference between this preheated cooling water and the inside of the pyrolysis reaction chamber 11 will be reduced, making the cooling process smoother and more uniform, reducing the thermal stress on the materials, and protecting the carbonization reactor 1.

[0033] Meanwhile, the cooling water entering the water-cooled jacket 13 of the carbonization reactor still has a strong heat absorption capacity after preheating, which can control the temperature of the carbonization process and avoid overheating and carbonization of agricultural and forestry biomass, thereby affecting the carbonization efficiency.

[0034] In addition, the cooling water can collect the heat generated by the dryer 3 and the heat generated by the carbonization reactor 1 in the same cooling water stream, which is then treated by the cooling tower 4 in one go. Compared with the two devices using cooling water independently, this reduces the total heat that the cooling tower 4 needs to dissipate, reduces the energy consumption of the cooling tower 4 fan and water pump, and improves the energy efficiency of the device.

[0035] In one embodiment, such as Figures 1 to 5 As shown, the secondary combustion chamber 2 is provided with a secondary combustion chamber water-cooling jacket 23, which covers the combustion chamber 21. The secondary combustion chamber water-cooling jacket 23 is provided with a secondary combustion chamber water-cooling jacket inlet 231 and a secondary combustion chamber water-cooling jacket outlet 232. The secondary combustion chamber water-cooling jacket inlet 231 is connected to the carbonization reactor water-cooling jacket outlet 132, and the secondary combustion chamber water-cooling jacket outlet 232 is connected to the cooling chamber inlet 411.

[0036] With this configuration, since the operating temperature of the secondary combustion chamber 2 is higher than that of the carbonization reactor 1, a stepped heat absorption mechanism is formed by adding a secondary combustion chamber water-cooling jacket 23 between the carbonization reactor water-cooling jacket 13 and the cooling tower 4.

[0037] That is, the low-temperature cooling water first enters the dryer 3 with the lowest temperature, and its temperature rises after absorbing its waste heat. This warm water then enters the carbonization reactor 1 with a higher temperature. Since there is still a large temperature difference between it and the interior of the carbonization reactor 1, it can absorb heat efficiently and its own temperature rises further. Finally, this hot water enters the secondary combustion chamber 2 with an extremely high temperature. Although the water temperature is already very high, there is still a sufficient temperature difference between it and the ultra-high temperature of the outer wall of the combustion chamber 21, which can continue to effectively absorb heat. After completing the heat exchange, it returns to the cooling tower 4.

[0038] This ensures that the same cooling water continuously recovers low-grade waste heat from the three devices, concentrates all the waste heat, and finally treats it uniformly by cooling tower 4. Compared with independent cooling or parallel cooling, this reduces the total heat dissipation load and energy consumption of cooling tower 4, and further improves the overall energy efficiency of the system.

[0039] In this process, a circulating pump 44 is used to drive the cooling water in the cooling tower 4 to flow out from the first outlet 412 of the cooling chamber.

[0040] In one embodiment, such as Figure 1 and Figure 5 As shown, the cooling chamber 41 is also provided with a cooling chamber water inlet 413, which is connected to a water source.

[0041] With this configuration, by setting up a water inlet 413 in the cooling chamber and connecting it to a water source (such as tap water or a water tank), softened water or fresh water can be added to the system at any time, accurately compensating for the water loss caused by evaporation, ensuring the dynamic balance of the total circulating cooling water volume, and maintaining stable heat exchange efficiency and waste heat recovery.

[0042] Meanwhile, by maintaining a constant water flow through the water inlet, it is ensured that there is always a sufficient amount of medium in the water-cooled jacket to efficiently and stably absorb the waste heat of the equipment, thereby controlling the operating temperature of each thermal equipment within the optimal design range, and indirectly ensuring the stability of the operating conditions and product quality of the main processes such as carbonization and drying.

[0043] Furthermore, a water vapor outlet 416 is provided at the center of the top of the cooling chamber 41, through which the evaporated water vapor is discharged.

[0044] In one embodiment, such as Figure 1 and Figure 5 As shown, the cooling tower 4 is also equipped with a first metering pump 42, which is installed between the cooling chamber water inlet 413 and the water source along the water supply path.

[0045] With this configuration, by setting up the first metering pump 42, a specific amount of makeup water can be precisely set and delivered according to the actual evaporation rate of the cooling tower 4 and the operating conditions of the system, so as to achieve on-demand replenishment, make the makeup water highly matched with the evaporation consumption, maintain the system's circulating water volume and water level in a stable and optimal state, and provide a thermal stability basis for the entire cooling system and the main processes (carbonization and drying) that depend on it.

[0046] In one embodiment, such as Figures 1 to 5As shown, the drying chamber 31 is provided with a drying chamber inlet 313 and a drying chamber outlet 312, and the drying chamber inlet 313 is connected to the end of the feeding mechanism 5; the pyrolysis reaction chamber 11 is provided with a pyrolysis reaction chamber inlet 112, a pyrolysis reaction chamber outlet 113 and a pyrolysis reaction chamber water inlet 114, and the pyrolysis reaction chamber inlet 112 is connected to the drying chamber outlet 312; the cooling chamber 41 is provided with a cooling chamber second water outlet 414, and the cooling chamber second water outlet 414 is connected to the pyrolysis reaction chamber water inlet 114; the agricultural and forestry biomass charcoal making device also includes a cooling chamber 6, which is provided with a cooling chamber inlet and a cooling chamber outlet, the cooling chamber inlet is connected to the pyrolysis reaction chamber outlet 113, and the cooling chamber outlet is connected to the pyrolysis reaction chamber inlet 112.

[0047] With this configuration, the drying chamber 31 of the dryer 3 has a drying chamber inlet 313, which is connected to the end of the material feeding mechanism, allowing the material to enter the drying chamber 31 for drying and preheating. The pyrolysis reaction chamber 11 has a pyrolysis reaction chamber inlet 112, which is connected to the drying chamber outlet 312, allowing the dried and preheated material to enter the pyrolysis reaction chamber 11 for carbonization. The pyrolysis reaction chamber 11 has a pyrolysis reaction chamber outlet 113, which is connected to the cooling chamber inlet, allowing the product obtained after carbonization to enter the cooling chamber 6 for cooling, thereby obtaining agricultural and forestry biochar.

[0048] The outlet of the cooling chamber is then connected to the inlet 112 of the pyrolysis reaction chamber, allowing the agricultural and forestry biochar to re-enter the pyrolysis reaction chamber 11. The cooling tower 4 is equipped with a cooling chamber 41 outlet, which is connected to the pyrolysis reaction chamber inlet 114, allowing the cooling water in the cooling tower 4 to enter the pyrolysis reaction chamber 11. The water is rapidly vaporized in the pyrolysis reaction chamber 11 to form water vapor, which then reacts with the agricultural and forestry biochar to produce activated carbon.

[0049] That is, the carbonization reactor 1 has dual-channel capabilities for carbonization feed and activation feed.

[0050] For example, during the carbonization process, the dried biomass is fed into the pyrolysis reaction chamber 11 through the first feed port for carbonization. The resulting biochar product is directly fed into the cooling chamber 6 through the discharge port and then cooled to become the final product. This mode is suitable for producing ordinary biochar needed locally.

[0051] During the activation process, the biochar produced by the carbonization module can be used as raw material and precisely fed back into the high-temperature pyrolysis reaction chamber 11 through the independent feed hopper 51 and the second feed port. Then, the activation medium is introduced to carry out the activation reaction and produce high-value-added activated carbon.

[0052] Meanwhile, stations can be set up directly near agricultural and forestry waste production sites, and the carbonization module can be used to convert raw biomass into dry, stable, and high-energy-density biochar, achieving weight and volume reduction in the process; or biochar produced in various places can be transported to a central factory with activation conditions, and activated centrally using the same activation mode of the same device, avoiding the transportation of large amounts of raw biomass, only the carbonized biochar needs to be transported, which can reduce transportation costs.

[0053] Furthermore, unlike traditional continuous carbonization and activation processes that require simultaneous completion of two-stage reactions at high temperatures, this device can separate the activation process from the carbonization process. After carbonization, the product can be temporarily stored in the pyrolysis reaction chamber 11, and the activation program can be started as needed. This avoids process interference caused by conflicts between activation and carbonization conditions, achieving step-by-step carbonization and activation, and reducing production complexity.

[0054] In one embodiment, such as Figure 1 , Figure 2 and Figure 5 As shown, the pyrolysis reaction chamber 11 is also provided with a pyrolysis reaction chamber inlet 114, and the cooling chamber 41 is also provided with a second cooling chamber outlet 414. A second metering pump 43 is provided between the pyrolysis reaction chamber inlet 114 and the second cooling chamber outlet 414.

[0055] In one embodiment, such as Figure 1 and Figure 4 As shown, the top side of the drying chamber 31 is provided with a drying chamber air outlet 314, and a chimney 34 is connected to the outside of the drying chamber air outlet 314. During the drying or preheating process, the material will carry water vapor from the drying chamber air outlet 314 and be discharged to the outside environment through the chimney 34.

[0056] In one embodiment, such as Figure 1 and Figure 3 As shown, multiple staggered folding plates 24 are arranged in the combustion chamber 21. In two adjacent folding plates 24, the bottom end of one folding plate 24 is connected to the bottom wall of the combustion chamber 21 and the top end is spaced apart from the top wall of the combustion chamber 21. The top end of the other folding plate 24 is connected to the top wall of the combustion chamber 21 and the bottom end is spaced apart from the bottom wall of the combustion chamber 21, so as to splice together to form a continuous and meandering combustion channel.

[0057] This configuration, with multiple staggered baffles 24 arranged in the combustion chamber 21 of the secondary combustion chamber 2, increases the actual flow distance of the pyrolysis gas from the inlet to the outlet, prolongs its residence time in the high-temperature zone, and ensures that all combustible components, such as tar, have sufficient reaction time to be completely decomposed and reacted, ultimately transforming into stable CO2 and H2O, thereby improving combustion efficiency and environmental benefits.

[0058] In one embodiment, such as Figure 1 and Figure 3 As shown, along the extension direction of the combustion flow channel, the combustion chamber 21 is provided with a number of spaced combustion chamber second air inlets 213; the secondary combustion chamber 2 is provided with a secondary combustion chamber combustion fan 25, and the secondary combustion chamber combustion fan 25 is connected to the number of combustion chamber second air inlets 213.

[0059] With this configuration, by setting up a combustion-supporting fan 25 for the secondary combustion chamber and connecting the combustion-supporting fan 25 to the second air inlets 213 of several combustion chambers, combustion-supporting air is injected at multiple points and in segments along the meandering flow channel. This allows for on-demand air distribution based on the actual combustion conditions of different sections within the flow channel, ensuring the complete combustion of combustible components at each stage.

[0060] For example, in the early stage of combustion, the amount of air injected is controlled to ensure that the pyrolysis gas is successfully ignited and burns stably, and to avoid excessive air diluting the combustion zone. In the middle stage of combustion, sufficient air is added to the area with the highest temperature to provide enough oxygen for the cracking and oxidation of large molecular organic matter such as tar. In the later stage of combustion, a small amount of air is added to ensure that any unburned components are eventually oxidized.

[0061] In one embodiment, it is still as follows Figure 1 and Figure 3 As shown, the combustion chamber 21 is also provided with a third air inlet 214, the end of which extends into the interior of the combustion chamber 21; the secondary combustion chamber 2 is also provided with a nozzle 26, which is installed at the end of the third air inlet 214.

[0062] Furthermore, an intake valve 28 is provided outside the third air intake 214 of the combustion chamber.

[0063] It can be explained that the feeding mechanism 5 includes a feeding hopper 51 and a conveyor belt 52. The feeding hopper 51 is installed on the conveyor belt 52 and moves with the conveyor belt 52. The feeding hopper 51 is used to communicate with the feed inlet 112 of the pyrolysis reaction chamber.

[0064] Furthermore, a transmission motor is used to drive the transmission track 52 to move.

[0065] In one embodiment, such as Figure 1 As shown, the agricultural and forestry biomass charcoal production device also includes a feed and discharge controller 7. Multiple feed and discharge controllers 7 are provided and are respectively installed between the feed inlet 112 of the pyrolysis reaction chamber and the discharge outlet 312 of the drying chamber, between the feed inlet 313 of the drying chamber and the hopper of the dryer 3, and between the discharge outlet 113 of the pyrolysis reaction chamber and the feed inlet of the cooling chamber.

[0066] This setup allows materials to pass through on demand, enabling precise and controllable material transport and improving the stability and automation of the process.

[0067] In one embodiment, it is still as follows Figure 1 As shown, the agricultural and forestry biomass charcoal production device also includes a control box 8, which is installed on the side of the pyrolysis reaction chamber 11 and connected to various electrical components via cables.

[0068] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A biomass charcoal production device for agricultural and forestry industries, characterized in that, include: The carbonization reactor (1) is provided with a pyrolysis reaction chamber (11) and a heating chamber (12). The pyrolysis reaction chamber (11) is provided with a pyrolysis reaction chamber outlet (111). The heating chamber (12) covers the pyrolysis reaction chamber (11) and is provided with a heating chamber inlet (121) and a heating chamber outlet (122). The secondary combustion chamber (2) is provided with a combustion chamber (21) and an igniter (22). The combustion chamber (21) is provided with a first air inlet (211) and an air outlet (212). The first air inlet (211) is connected to the air outlet (111) of the pyrolysis reaction chamber, and the air outlet (212) is connected to the air inlet (121) of the heating chamber. The igniter (22) is installed inside the combustion chamber (21). The dryer (3) is provided with a drying chamber (31), the drying chamber (31) is provided with a drying chamber air inlet (311), and the drying chamber air inlet (311) is connected to the heating chamber air outlet (122).

2. The agricultural and forestry biomass charcoal production device according to claim 1, characterized in that, The dryer (3) is provided with a dryer water cooling jacket (32), which covers the outside of the drying chamber (31). The dryer water cooling jacket (32) is provided with a dryer water cooling jacket inlet (321) and a dryer water cooling jacket outlet (322). The agricultural and forestry biomass charcoal production device also includes a cooling tower (4), which includes a cooling chamber (41). The cooling chamber (41) is provided with a first outlet (412) and an inlet (411). The first outlet (412) is connected to the inlet (321) of the water-cooled jacket of the dryer, and the inlet (411) is connected to the outlet (322) of the water-cooled jacket of the dryer.

3. The agricultural and forestry biomass charcoal production device according to claim 2, characterized in that, The carbonization reactor (1) is provided with a carbonization reactor water cooling jacket (13), which covers the outside of the pyrolysis reaction chamber (11). The carbonization reactor water cooling jacket (13) is provided with a carbonization reactor water cooling jacket inlet (131) and a carbonization reactor water cooling jacket outlet (132). The carbonization reactor water cooling jacket inlet (131) is connected to the dryer water cooling jacket outlet (322), and the carbonization reactor water cooling jacket outlet (132) is connected to the cooling chamber inlet (411).

4. The agricultural and forestry biomass charcoal production device according to claim 3, characterized in that, The secondary combustion chamber (2) is provided with a secondary combustion chamber water-cooling jacket (23), which covers the combustion chamber (21). The secondary combustion chamber water-cooling jacket (23) is provided with a secondary combustion chamber water-cooling jacket inlet (231) and a secondary combustion chamber water-cooling jacket outlet (232). The secondary combustion chamber water-cooling jacket inlet (231) is connected to the carbonization reactor water-cooling jacket outlet (132), and the secondary combustion chamber water-cooling jacket outlet (232) is connected to the cooling chamber inlet (411).

5. The agricultural and forestry biomass charcoal production apparatus according to any one of claims 2-4, characterized in that, The cooling chamber (41) is also provided with a cooling chamber water inlet (413), which is connected to a water source.

6. The agricultural and forestry biomass charcoal production device according to claim 5, characterized in that, The cooling tower (4) is also equipped with a first metering pump (42), which is installed between the water inlet (413) of the cooling chamber and the water source along the water supply path.

7. The agricultural and forestry biomass charcoal production apparatus according to any one of claims 2-4, characterized in that, The drying chamber (31) is provided with a drying chamber inlet (313) and a drying chamber outlet (312), and the drying chamber inlet (313) is connected to the end of the feeding mechanism (5); The pyrolysis reaction chamber (11) is provided with a pyrolysis reaction chamber inlet (112), a pyrolysis reaction chamber outlet (113) and a pyrolysis reaction chamber water inlet (114), and the pyrolysis reaction chamber inlet (112) is connected to the drying chamber outlet (312); The cooling chamber (41) is provided with a second water outlet (414), which is connected to the water inlet (114) of the pyrolysis reaction chamber. The agricultural and forestry biomass charcoal making device also includes a cooling chamber (6), which is provided with a cooling chamber inlet and a cooling chamber outlet. The cooling chamber inlet is connected to the pyrolysis reaction chamber outlet (113), and the cooling chamber outlet is connected to the pyrolysis reaction chamber inlet (112).

8. The agricultural and forestry biomass charcoal production apparatus according to any one of claims 2-4, characterized in that, The combustion chamber (21) is provided with a plurality of alternating folded plates (24). In two adjacent folded plates (24), the bottom end of one folded plate (24) is connected to the bottom wall of the combustion chamber (21) and the top end is spaced apart from the top wall of the combustion chamber (21). The top end of the other folded plate (24) is connected to the top wall of the combustion chamber (21) and the bottom end is spaced apart from the bottom wall of the combustion chamber (21), so as to splice together to form a continuous and meandering combustion channel.

9. The agricultural and forestry biomass charcoal production device according to claim 8, characterized in that, Along the extension direction of the combustion flow channel, the combustion chamber (21) is provided with a plurality of spaced second air inlets (213). The secondary combustion chamber (2) is equipped with a secondary combustion chamber combustion fan (25), which is connected to the second air inlets (213) of several combustion chambers.

10. The agricultural and forestry biomass charcoal production apparatus according to claim 8, characterized in that, The combustion chamber (21) is also provided with a third air inlet (214), the end of which extends into the interior of the combustion chamber (21); The secondary combustion chamber (2) is also provided with a nozzle (26), which is installed at the end of the third air inlet (214) of the combustion chamber.

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