Biomass briquette high-temperature flue gas soil sterilization device

Abstract

This application relates to the field of agricultural machinery technology, specifically a high-temperature flue gas soil sterilization device for biomass briquettes. The device includes a vehicle body, a biomass combustion furnace located in the middle of the vehicle body, and a feeding mechanism for feeding the biomass combustion furnace. The biomass combustion furnace also has a feeding seat and a high-temperature flue for emitting high-temperature flue gas. The feeding mechanism includes a hopper mounted on the vehicle body and an auger conveyor located at the bottom of the hopper, with the outlet of the auger conveyor connected to the inlet of the feeding seat. A high-temperature sterilization box is located at the bottom of the vehicle body, and the outlet of the high-temperature flue is fixedly connected to the high-temperature sterilization box. This application has the advantages of significantly extending the contact time between the soil and the high-temperature flue gas, improving the sterilization effect on pathogens, insect eggs, and harmful microorganisms, while using clean biomass fuel to reduce environmental pollution, and directly returning the combustion ash to the field to replenish soil nutrients and improve soil structure.

Description

Technical Field

[0001] This application relates to the technical field of agricultural machinery, and in particular to a high-temperature flue gas soil sterilization device for biomass briquettes. Background Technology

[0002] In agricultural production, long-term continuous cropping and replanting of crops lead to the continuous accumulation of pathogens, nematodes, and pests in the soil, causing serious soil-borne diseases, especially damaging vegetable crops such as tomatoes, cucumbers, and melons. These diseases manifest as stunted plant growth, reduced yields, and deteriorated quality, severely restricting the stability and sustainability of agricultural production. Soil disinfection is a crucial step in effectively controlling these diseases. Existing methods are mainly divided into two categories: chemical disinfection and high-temperature sterilization. Chemical disinfection typically uses fumigants such as chloropicrin and methyl bromide. During operation, the agent must be evenly applied to the soil and then covered with plastic film for a sealed treatment, relying on the synergistic effect of agent volatilization and high temperature to kill pathogens. Alternatively, calcium cyanamide can be used in combination with organic materials such as straw, involving multiple steps including spreading, tilling, irrigation, and mulching to seal the soil. However, these chemical methods have obvious drawbacks: the application process is cumbersome, requiring specialized equipment and strict operating procedures, which increases the labor intensity of farmers; the pesticides are prone to leave residues in the soil and agricultural products, polluting the ecological environment and threatening food safety; long-term use will disrupt the balance of soil microbial communities, leading to soil compaction and fertility decline, which is contrary to the development direction of green agriculture.

[0003] High-temperature sterilization technology is gradually being promoted as an alternative. For example, the device disclosed in Chinese patent application CN 200810015215.5 disinfects soil by burning coal to generate high-temperature flue gas. Although this method avoids chemical residues, it has revealed many shortcomings in practical applications: the soil, after being mechanically crushed, is in a suspended state and comes into contact with the flue gas for a short time, which cannot ensure thorough sterilization of deep soil layers, resulting in incomplete removal of pathogens and insect eggs; coal, as a non-renewable resource, produces a large amount of smoke, sulfur dioxide, and nitrogen oxides during combustion, causing air pollution and low energy conversion efficiency; the ash residue after combustion is usually treated as waste and not effectively utilized, increasing the environmental burden and wasting potential resources. Therefore, there is an urgent need for a new type of soil sterilization device that can significantly extend the contact time between soil and the high-temperature medium, use biomass such as straw and sawdust as a clean and renewable heat source to reduce environmental pollution, and directly return the combustion ash residue to the field to replenish soil nutrients and improve soil structure. This would effectively prevent and control soil-borne diseases while meeting the urgent needs of modern agriculture for resource conservation, environmental friendliness, and sustainable development. Utility Model Content

[0004] To address the shortcomings of existing technologies, this application provides a biomass briquette fuel high-temperature flue gas soil sterilization device, which has the advantages of significantly extending the contact time between soil and high-temperature flue gas, improving the killing effect on pathogens, insect eggs and harmful microorganisms, reducing environmental pollution by using clean biomass fuel, and directly returning the combustion ash to the field to replenish soil nutrients and improve soil structure.

[0005] The above-mentioned objective of this application is achieved through the following technical solution: A biomass briquette fuel high-temperature flue gas soil sterilization device includes a vehicle body, a biomass combustion furnace and a feeding mechanism for feeding the biomass combustion furnace are arranged in the middle of the vehicle body, and a feeding seat and a high-temperature flue for discharging high-temperature flue gas are also arranged on the biomass combustion furnace. The feeding mechanism includes a hopper installed on the vehicle body and an auger conveyor installed at the bottom of the hopper. The outlet of the auger conveyor is connected to the inlet of the feeding seat. A high-temperature sterilization box is installed at the bottom of the vehicle body. The outlet of the high-temperature flue is fixed to the high-temperature sterilization box. The bottom of the high-temperature sterilization box is open. A rotary tiller and a conveyor belt are installed inside the high-temperature sterilization box. The top of the conveyor belt and the top of the inner cavity of the high-temperature sterilization box form a sterilization area that allows soil to pass through. The high-temperature flue is connected to the sterilization area.

[0006] In summary, this application has the following beneficial technical effects: This application provides a biomass combustion soil heating and sterilization device, comprising a vehicle body, a biomass combustion furnace and a feeding mechanism for feeding the biomass combustion furnace in the middle of the vehicle body, a high-temperature sterilization box at the bottom of the vehicle body, a rotary tiller and a conveyor belt inside the high-temperature sterilization box, a control box on the vehicle body, the biomass combustion furnace being connected to the high-temperature sterilization box via a high-temperature flue, and a fan on the vehicle body. During operation, biomass briquettes are burned in the combustion furnace to generate high-temperature flue gas. The vehicle body is equipped with a cab and a gearbox, and wheels at the bottom of the vehicle body. Soil is continuously transported by the conveyor belt and kept in full and continuous contact with the high-temperature flue gas, extending the action time. At the same time, the biomass fuel and ash are returned to the field to achieve resource recycling, effectively solving the problems of incomplete soil sterilization, serious environmental pollution and resource waste in the prior art, and has the above advantages. Attached Figure Description

[0007] Figure 1 This is a side view schematic diagram of one embodiment of this application; Figure 2 This is a schematic diagram of the disinfection area inside the high-temperature disinfection box according to one embodiment of this application.

[0008] Reference numerals: 1. Front of vehicle; 2. Gearbox; 3. High-temperature flue; 4. Nozzle; 5. Biomass combustion furnace; 6. Furnace cover; 7. Hopper; 8. Screw conveyor; 9. Control box; 10. Fan; 11. Feed seat; 12. Furnace door; 13. Temperature control sensor; 14. Drive roller; 15. Conveyor belt; 16. Rotary tiller; 17. High-temperature sterilization box; 18. Vehicle body; 19. Soil. Detailed Implementation

[0009] The following is in conjunction with the appendix Figure 1-2 This application will be described in further detail.

[0010] In existing soil disinfection technologies, chemical fumigation involves applying chemicals to the soil and sealing it with plastic film; costs include the cost of chemicals and covering materials; chemical residues may occur; and it has adverse effects on the soil's ecological environment. High-temperature sterilization methods generate smoke and harmful gases from coal combustion; energy efficiency is reduced; environmental pollution exists; ash residue is not utilized as a resource; and the short interaction time between the soil and the high-temperature medium leads to insufficient insecticidal effect. These issues impact the reliability and environmental sustainability of soil disinfection.

[0011] For example, in greenhouse tomato growing bases, when using coal-fired high-temperature soil sterilization devices, the smoke and harmful gas emissions from coal combustion cause a decline in the air quality of the working environment, requiring operators to take additional protective measures; the high-temperature flue gas has a short contact time with the soil, and some soil areas are not fully sterilized, leaving residual pathogens to continue to harm crop growth; in addition, the ash residue after combustion is piled up in the field and is not effectively utilized, resulting in resource waste and potentially affecting soil structure.

[0012] If the above problems are not addressed, the soil disinfection effect will be unstable, pathogens and pests will continue to accumulate, thereby reducing crop yield and quality; environmental pollution will be aggravated, which is inconsistent with the requirements of green agricultural development; energy consumption will increase and operating costs will rise; and the ash residue will not be utilized as a resource, missing the opportunity to improve the soil and having a long-term impact on soil health and sustainable agricultural development.

[0013] In response, this application proposes a device for heating and sterilizing soil using high-temperature flue gas generated by biomass combustion, including a vehicle body 18, a biomass combustion furnace 5 and a feeding mechanism for feeding the biomass combustion furnace in the middle of the vehicle body 18, a furnace cover 6 on the upper part of the biomass combustion furnace 5, a feeding seat 11 on one side of the biomass combustion furnace 5, the feeding mechanism including a hopper 7 on the vehicle body 18 and an auger conveyor 8 at the bottom of the hopper 7, the outlet of the auger conveyor 8 being connected to the inlet of the feeding seat 11, a nozzle 4 on the biomass combustion furnace 5, a high-temperature flue 3 at the nozzle 4, and the inlet of the high-temperature flue 3 being connected to the nozzle 4; A high-temperature sterilization box 17 is installed at the bottom of the vehicle body. The outlet of the high-temperature flue 3 is fixed to the high-temperature sterilization box 17. The bottom of the high-temperature sterilization box 17 is open. A rotary tiller 16 and a conveyor belt 15 are installed inside the high-temperature sterilization box 17. The conveyor belt 15 is driven by a transmission roller 14 installed inside the conveyor belt 15. The top of the conveyor belt 15 and the top of the inner cavity of the high-temperature sterilization box 17 form a sterilization area that allows soil to pass through. The high-temperature flue 3 is connected to the sterilization area. The rotary tiller 16 is used to turn over and loosen the soil to be treated. The rear of the rotary tiller 16 is connected to the conveyor belt 15, which is driven by the transmission roller 14. The conveyor belt 15 is used to carry and continuously transport the soil after rotary tillage, so that the soil enters the high-temperature sterilization box 17 during the transportation process and comes into full and continuous contact with the high-temperature flue gas therein. This effectively prolongs the contact time between the soil and the high-temperature flue gas, and improves the killing effect on pathogens, insect eggs and harmful microorganisms in the soil. The vehicle body 18 is also equipped with a control box 9, which is used to adjust the screw conveyor 8 to quantitatively transport biomass fuels such as straw pellets and wood pellets into the biomass combustion furnace 5. The biomass combustion furnace 5 is connected to the high-temperature sterilization box 17 through the high-temperature flue 3. The high-temperature flue 3 is equipped with a temperature control sensor 13 for real-time monitoring of the high-temperature flue gas temperature. The vehicle body 18 is also equipped with a fan 10. The temperature and flow rate of the flue gas entering the high-temperature sterilization box 17 are controlled by adjusting the fan 10. The fan 10 is controlled by the control box 9 to keep the flue gas temperature stable within a suitable sterilization range. During the operation, biomass briquettes are burned in the combustion furnace 5 to produce high-temperature flue gas. The high-temperature flue gas is transported by the blower 10, first through the nozzle 4, and then through the high-temperature flue 3 into the high-temperature sterilization box 17 to sterilize the soil on the conveyor belt 15 at high temperature. At the same time, the ash produced by the combustion of biomass briquettes can be discharged through the furnace door 12 and returned to the field directly as a soil amendment material to supplement soil nutrients and improve soil structure. The vehicle body is equipped with a front end 1 and a gearbox 2, which provide power and walking control functions for the whole machine. The bottom of the vehicle body 18 is equipped with wheels 21, which enable the device to move and operate in farmland or greenhouse.

[0014] For ease of understanding, the following explains some key terms in this embodiment: The body 18 is the main structure of the device, used to support and secure all functional components and provide overall structural support. The body 18 is typically made of high-strength metal to ensure stability and durability during movement and operation.

[0015] A biomass combustion furnace 5 is a device used to burn biomass fuels to generate high-temperature flue gas. This combustion furnace 5 is typically designed to efficiently burn biomass briquettes such as straw pellets and wood pellets. Its internal structure may include a combustion chamber and an ash collection area to achieve complete fuel combustion and effective heat release.

[0016] The feeding mechanism is used to transport biomass fuel from the silo 7 to the biomass combustion furnace 5. This mechanism typically includes the silo 7 and the auger conveyor 8. The silo 7 is a container for storing biomass fuel, while the auger conveyor 8 is a conveying device that pushes the material axially through rotating helical blades, ensuring a continuous and stable supply of fuel.

[0017] The high-temperature flue 3 is a channel connecting the biomass combustion furnace 5 and the high-temperature sterilization box 17, used to guide the high-temperature flue gas generated by biomass combustion into the high-temperature sterilization box 17. This flue 3 is usually made of high-temperature resistant materials and has good thermal insulation properties to reduce heat loss.

[0018] The high-temperature sterilization chamber 17 is a closed or semi-closed cavity used to contain soil to be treated and to bring it into full contact with high-temperature flue gas, thereby achieving heat sterilization of the soil. The bottom of the chamber 17 is usually designed to be open to facilitate the entry and exit of soil and the movement of the equipment.

[0019] Rotary tiller 16 is an agricultural machine used for tilling, loosening, and breaking up soil. In this device, the rotary tiller 16 turns over and breaks up the topsoil to be treated, increasing the contact area between the soil and the high-temperature flue gas, thus preparing it for subsequent sterilization treatment.

[0020] The conveyor belt 15 is a device for continuously conveying materials, driven by the drive roller 14. In this device, the conveyor belt 15 is used to carry the soil treated by the rotary tiller 16 and continuously transport it into the high-temperature sterilization chamber 17, ensuring that the soil remains in the high-temperature flue gas for a sufficient time to complete the sterilization process.

[0021] Control box 9 is the control center of the unit, integrating various electrical components and control modules for monitoring and adjusting various operating parameters of the unit. Through control box 9, precise control of key parameters such as fuel feed rate, flue gas temperature, and fan speed can be achieved, ensuring that the unit operates in optimal condition.

[0022] The temperature control sensor 13 is a device used to measure the temperature of high-temperature flue gas in real time. This sensor 13 is typically installed on the high-temperature flue duct 3 and feeds back the measured temperature signal to the control box 9 so that the control system can adjust according to the preset sterilization temperature range.

[0023] The fan 10 is a device used to generate airflow. In this device, the fan 10 is used to regulate the flow rate and temperature of the flue gas entering the high-temperature sterilization chamber 17. By controlling its rotation speed or damper opening, the amount of flue gas delivered and the heat can be precisely controlled, thereby maintaining a stable temperature within the sterilization area.

[0024] The cab 1 and the gearbox 2 together constitute the power and travel control unit of the device. The cab 1 provides driving force, while the gearbox 2 is used to regulate the speed and torque of the wheels 21, enabling the device to move at different speeds in farmland or greenhouses and adapt to different operational needs.

[0025] This embodiment provides a device for heating and sterilizing soil using high-temperature flue gas generated from biomass combustion. The overall structure of the device is designed to be mobile, facilitating flexible operation in farmland or greenhouses.

[0026] The device includes a body 18, which serves as the platform for the entire device. Its structure can be constructed using welded steel frames or through modular assembly. The bottom of the body 18 is typically equipped with wheels 21, such as pneumatic tires or tracked running gear, to adapt to different terrains. To provide driving force and control the device's movement, a front unit 1 and a gearbox 2 are also located on the body. The front unit 1 can be an internal combustion engine, such as a diesel engine, or an electric motor, which transmits power to the wheels 21 via the gearbox 2, thereby enabling the device to move forward, backward, and steer.

[0027] In the middle of the vehicle body 18, a biomass combustion furnace 5 is installed, which is the core component for generating high-temperature flue gas. The biomass combustion furnace 5 can adopt various structural forms, such as a fixed-bed combustion furnace or a fluidized-bed combustion furnace, and its interior is usually lined with refractory material to withstand high temperatures. The upper part of the combustion furnace 5 is equipped with a furnace cover 6, which can be designed to be openable to facilitate inspection, maintenance, or ignition operations of the furnace. One side of the combustion furnace 5 has a feed seat 11, which is the inlet for biomass fuel to enter the combustion furnace 5.

[0028] To ensure a continuous supply of biomass fuel, the device also includes a feeding mechanism. This feeding mechanism may include a hopper 7 mounted on the vehicle body 18. The hopper 7 is used to store biomass fuel and can be designed in a funnel shape to facilitate the smooth flow of fuel. At the bottom of the hopper 7, an auger conveyor 8 is installed. This auger conveyor 8 is driven by a motor, and its spiral blades quantitatively transport the biomass fuel (such as straw pellets, wood pellets, etc.) from the hopper 7. The outlet of the auger conveyor 8 is connected to the inlet of the feed seat 11 to ensure that the fuel can accurately enter the biomass combustion furnace 5.

[0029] The biomass combustion furnace 5 is also equipped with a high-temperature flue 3 for emitting high-temperature flue gas. This high-temperature flue 3 is typically constructed of a high-temperature resistant metal pipe, and may contain baffles to optimize the flow of flue gas. The outlet of the high-temperature flue 3 is fixed to a high-temperature sterilization box 17 located at the bottom of the vehicle body 18. The bottom of the high-temperature sterilization box 17 is designed to be open, allowing the device to directly cover the soil area to be treated during movement. Inside the high-temperature sterilization box 17 is a rotary tiller 16 and a conveyor belt 15. The rotary tiller 16 can be a rotating component consisting of blades or rake teeth, driven by a motor, used to turn over and loosen the soil to be treated, increasing the soil surface area and aeration.

[0030] The rotary tiller 16 is connected to a conveyor belt 15 at its rear. The conveyor belt 15 is driven by a drive roller 14 located inside the conveyor belt 15. The drive roller 14 can be driven by a motor through a reduction gear, causing the conveyor belt 15 to move continuously. The conveyor belt 15 carries and continuously transports the rotary-tillered soil, allowing the soil to enter the high-temperature sterilization chamber 17 during the transport process. The top of the conveyor belt 15 and the top of the inner cavity of the high-temperature sterilization chamber 17 form a sterilization area through which the soil can pass. The high-temperature flue 3 is connected to this sterilization area, allowing the high-temperature flue gas to directly act on the soil on the conveyor belt 15, achieving full and continuous contact, thereby effectively prolonging the contact time between the soil and the high-temperature flue gas and improving the killing effect on pathogens, insect eggs, and harmful microorganisms in the soil.

[0031] To ensure precise control of the entire unit's operation, a control box 9 is also installed on the vehicle body 18. The control box 9 integrates a programmable logic controller (PLC) or microprocessor to receive sensor signals and output control commands. The control box 9 is used to adjust the rotational speed of the auger conveyor 8, thereby quantitatively conveying biomass fuels such as straw pellets and wood pellets into the biomass combustion furnace 5, ensuring the stability and efficiency of the combustion process.

[0032] The biomass combustion furnace 5 is connected to the high-temperature sterilization chamber 17 via a high-temperature flue 3. A temperature control sensor 13, which can be a thermocouple or a resistance temperature detector (RTD), is installed on the high-temperature flue 3 to monitor the temperature of the high-temperature flue gas in real time. A fan 10, which can be a centrifugal fan or an axial fan, is also installed on the chassis 18. By adjusting the speed of the fan 10 or the opening of its inlet, the temperature and flow rate of the flue gas entering the high-temperature sterilization chamber 17 can be controlled. The fan 10 is controlled by a control box 9, which automatically adjusts the airflow based on the feedback signal from the temperature control sensor 13 to stabilize the flue gas temperature within a suitable sterilization range, such as between 80°C and 200°C, to ensure sterilization effectiveness while avoiding excessive damage to the soil structure.

[0033] During operation, biomass briquettes are burned in the combustion furnace 5 to generate high-temperature flue gas. This high-temperature flue gas is transported by the blower 10, first passing through the nozzle 4, and then through the high-temperature flue duct 3 into the high-temperature sterilization chamber 17, where it sterilizes the soil on the conveyor belt 15. The nozzle 4 can be designed with multiple small holes or slits to ensure the flue gas is evenly sprayed onto the soil. Simultaneously, the ash produced from the combustion of biomass briquettes can be discharged through the furnace door 12. The furnace door 12 can be a manually or automatically opening door for easy ash removal. This ash can be directly returned to the field as a soil amendment to replenish soil nutrients and improve soil structure.

[0034] The following example will provide a more detailed explanation of the above technical solution: Inside a greenhouse, a user plans to plant new crops, but due to long-term continuous cropping, a large number of pathogens and insect eggs have accumulated in the soil, necessitating thorough sterilization. The user decides to use the biomass high-temperature flue gas soil heating sterilization device provided in this embodiment.

[0035] First, the user drives the device to the soil area inside the greenhouse to be treated. The device's front end 1 starts, driving the wheels 21 through the gearbox 2, enabling the device to move smoothly. Before the operation begins, the user loads pre-prepared biomass pellet fuel (e.g., corn stalk pellets) into the device's hopper 7.

[0036] When the device begins to move, the control box 9 receives the start command and begins to control the auger conveyor 8 to transport biomass pellet fuel from the hopper 7 to the feed seat 11 of the biomass combustion furnace 5 at a preset rate. After the fuel enters the combustion furnace 5, it is ignited and continues to burn inside, producing a large amount of high-temperature flue gas. The furnace cover 6 above the combustion furnace 5 remains closed to ensure combustion efficiency and flue gas flow direction.

[0037] Meanwhile, the rotary tiller 16 at the bottom of the device begins to work, its rotating blades penetrating deep into the soil to turn over, loosen, and break up the topsoil, making the soil particles smaller and increasing the contact area with the high-temperature flue gas. The tilled soil is then carried by the conveyor belt 15. Driven by the drive roller 14, the conveyor belt 15 continuously feeds the soil into the high-temperature sterilization chamber 17 at a constant speed.

[0038] The high-temperature flue gas generated by the biomass combustion furnace 5 is forcibly conveyed through the high-temperature flue duct 3 by the blower 10. Before entering the high-temperature sterilization chamber 17, the flue gas passes through the nozzle 4, which evenly sprays the flue gas onto the moving soil layer on the conveyor belt 15. The temperature control sensor 13 installed on the high-temperature flue duct 3 monitors the flue gas temperature in real time and feeds the data back to the control box 9. The control box 9 adjusts the speed of the blower 10 according to the preset sterilization temperature range (e.g., 100℃), thereby precisely controlling the flow rate and temperature of the flue gas entering the high-temperature sterilization chamber 17 to ensure that the temperature in the sterilization area remains stable at the optimal sterilization state.

[0039] The soil moves slowly on conveyor belt 15, making full and continuous contact with high-temperature flue gas inside the high-temperature sterilization chamber 17. Due to the presence of conveyor belt 15, the soil's residence time in the high-temperature environment is effectively extended, allowing pathogens, insect eggs, and harmful microorganisms in the soil to be thoroughly killed. This continuous contact significantly improves the sterilization effect and solves the problem of short contact time between soil and the high-temperature medium in traditional methods.

[0040] Throughout the operation, the ash produced by biomass combustion is discharged through furnace door 12. This ash is directly spread onto the sterilized soil, serving as a natural soil conditioner, replenishing nutrients such as potassium and phosphorus in the soil, improving the soil's aggregate structure, realizing resource recycling, and avoiding the environmental problems of waste disposal.

[0041] After the device completes soil sterilization in one area, the user can continue driving the device to the next area to be treated, repeating the above operation process until the soil sterilization of the entire greenhouse is completed. Through this device, users not only efficiently solve soil pest and disease problems, but also avoid the use of chemical pesticides, protect the soil ecological environment, and realize the resource utilization of biomass ash.

[0042] Based on the above examples, the soil heating sterilization device provided in this embodiment demonstrates significant progress and innovation in its technical concept.

[0043] Compared to existing technologies that use chemical agents for soil disinfection, this device completely avoids the use of chemical agents. In greenhouse operations, users do not need to worry about the impact of chemical residues on crop growth and food safety, and it also eliminates the problems of complex operation, high costs, and adverse effects on the soil ecosystem. This directly responds to the requirements of green agriculture and sustainable development.

[0044] Compared to existing high-temperature sterilization devices (such as the coal-fired devices mentioned in the background section), the core advantages of this device lie in the cleanliness of its heat source and the improved sterilization efficiency. Existing coal-fired devices rely on non-renewable energy sources, and combustion produces smoke and harmful gases, causing environmental pollution. This device, however, uses a biomass combustion furnace 5, utilizing clean and renewable biomass fuels such as straw pellets. This significantly reduces carbon emissions and environmental pollution during user operations, aligning with the trends of energy efficiency and environmental protection.

[0045] Furthermore, this device achieves full and continuous contact between the soil and high-temperature flue gas through the conveyor belt 15 installed inside the high-temperature sterilization chamber 17. In the user's example, the soil is continuously conveyed on the conveyor belt 15, extending its residence time in the high-temperature environment. This contrasts sharply with existing technologies that directly spray flue gas after pulverizing the soil, resulting in a short contact time. This extended contact time design allows pathogens, insect eggs, and harmful microorganisms in the soil to be more thoroughly killed, significantly improving the sterilization effect.

[0046] Furthermore, this device innovatively realizes the resource utilization of biomass combustion ash. In the user's operation, the ash produced by combustion is directly returned to the field through the furnace door 12, which not only avoids the problem of ash being treated as waste, but also replenishes soil nutrients and improves soil structure. This contrasts with the existing technology where coal ash is usually treated as waste, demonstrating higher resource utilization efficiency and environmental friendliness.

[0047] Overall, this device integrates biomass combustion, precise flue gas temperature and flow control, extended soil-flue gas contact time, and ash resource utilization, forming a comprehensive solution that is structurally sound, easy to operate, highly efficient, environmentally friendly, and possesses soil improvement capabilities. This technological concept not only effectively addresses many shortcomings of existing soil pest and disease control methods but also makes significant technological contributions in clean energy utilization, sterilization efficiency, and resource recycling.

[0048] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A biomass briquette high temperature flue gas soil disinfestation apparatus, characterized by, The vehicle includes a body, a biomass combustion furnace and a feeding mechanism for feeding the biomass combustion furnace are located in the middle of the body, and the biomass combustion furnace is also equipped with a feeding seat and a high-temperature flue for discharging high-temperature flue gas. The feeding mechanism includes a hopper installed on the vehicle body and an auger conveyor installed at the bottom of the hopper. The outlet of the auger conveyor is connected to the inlet of the feeding seat. A high-temperature sterilization box is installed at the bottom of the vehicle body. The outlet of the high-temperature flue is fixed to the high-temperature sterilization box. The bottom of the high-temperature sterilization box is open. A rotary tiller and a conveyor belt are installed inside the high-temperature sterilization box. The top of the conveyor belt and the top of the inner cavity of the high-temperature sterilization box form a sterilization area that allows soil to pass through. The high-temperature flue is connected to the sterilization area.

2. The apparatus for soil sterilization by high temperature flue gas of biomass briquette according to claim 1, wherein, The biomass combustion furnace is equipped with a furnace cover on the top.

3. The apparatus according to claim 1, wherein the biomass briquette high-temperature flue gas soil sterilization apparatus is characterized by, The conveyor belt is driven by drive rollers located inside the conveyor belt.

4. The apparatus according to claim 1, wherein the biomass briquette high-temperature flue gas soil sterilization apparatus is characterized by, The vehicle is also equipped with a control box, which is used to regulate the auger conveyor to quantitatively transport straw pellets and wood pellets biomass fuel to the biomass combustion furnace.

5. The apparatus according to claim 4, wherein the biomass briquette high-temperature flue gas soil sterilization apparatus is characterized by, Temperature control sensors are installed on the high-temperature flue to monitor the temperature of the high-temperature flue gas in real time; a fan is also installed on the vehicle body to control the temperature and flow rate of the flue gas entering the high-temperature sterilization box by adjusting the fan. The fan is controlled by a control box.

6. The apparatus according to claim 1, wherein the biomass briquette high-temperature flue gas soil sterilization apparatus is characterized by, The bottom of the biomass combustion furnace is also equipped with a furnace door for ash removal.

7. The apparatus according to claim 1, wherein the biomass briquette high-temperature flue gas soil sterilization apparatus is characterized by, The vehicle body is equipped with a front end and a gearbox, and wheels are located at the bottom of the vehicle body to provide power and movement control for the whole machine.

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