A solid waste-based low-sulfur fuel and seawater desalination system based on biochar

Abstract

The application discloses a solid waste-based low-sulfur fuel and seawater desalination collaborative system based on biochar, and belongs to the technical field of resource conversion and utilization, and comprises a microwave pyrolysis furnace, the microwave pyrolysis furnace is respectively provided with a biomass feeding port and a waste tire feeding port, a wind cutting and stirring mechanism is arranged in the microwave pyrolysis furnace, the microwave pyrolysis furnace is connected with a cooling mechanism, the cooling mechanism comprises an oil condensing part communicated with the microwave pyrolysis furnace, the oil condensing part is respectively connected with a collecting part and a water condensing part, the water condensing part is communicated with the microwave pyrolysis furnace, and the microwave pyrolysis furnace is electrically connected with a wind driven generator. The microwave heating technology is used for co-pyrolysis of biomass and seawater, the biomass pyrolysis carbon is used as a desulfurizer to collaboratively process waste tires, and finally, low-sulfur fuel and available pyrolysis water are obtained through fine segmented cooling.

Description

Technical Field

[0001] This invention belongs to the field of resource conversion and utilization technology, and in particular relates to a synergistic system for solid waste-based low-sulfur fuel and seawater desalination based on biochar. Background Technology

[0002] With increasing global concern over the energy crisis, environmental pollution, and solid waste treatment challenges, the demand for biomass and waste resource utilization technologies, as well as clean fuel production technologies, has become particularly urgent. Biomass, as an abundant renewable carbon source, is considered an important pathway to achieving sustainable energy development through pyrolysis, which can produce high-value-added bio-oil, biochar, and fuel gas. Meanwhile, waste tires, a typical type of solid waste that is difficult to biodegrade naturally, face significant challenges in their harmless and resource-based treatment. Existing biomass pyrolysis technologies typically suffer from the following problems: 1) High energy consumption: Traditional pyrolysis processes rely heavily on external heat sources, resulting in high energy consumption and room for improvement in energy efficiency; 2) Inadequate product separation: Effective separation and recovery of pyrolysis products, especially the fine-grained cooling and collection of multiphase products, still has room for optimization, affecting product purity and subsequent utilization; 3) Limitations of single raw materials: Most research focuses on the pyrolysis of single biomass raw materials, failing to fully utilize the advantages of synergistic pyrolysis of multiple raw materials, such as combining with water resources to improve the pyrolysis process or product characteristics.

[0003] The resource utilization of waste tires, especially pyrolysis technology, also faces its own unique challenges: 1) High sulfur content in products: Waste tires contain high levels of sulfur, resulting in excessive sulfur content in their pyrolysis products. If used as fuel, expensive and complex desulfurization treatment is required, increasing subsequent costs and process difficulty; 2) Desulfurization efficiency and cost: Existing high-efficiency desulfurization technologies often involve large investments and high operating costs, and still have limitations in the treatment of high-sulfur waste. There is an urgent need for economical and efficient desulfurization strategies.

[0004] In terms of renewable energy utilization, while clean energy sources such as wind power have environmental advantages, their intermittency and volatility can lead to "wind curtailment" during peak power generation periods, resulting in energy waste. How to efficiently couple these unstable excess power sources with energy-intensive industrial thermochemical processes to achieve cascaded energy utilization and maximize their value is a pressing issue in the energy sector. Summary of the Invention

[0005] The purpose of this invention is to provide a synergistic system for solid waste-based low-sulfur fuel and seawater desalination based on biochar, in order to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following solution: The present invention provides a co-processing system for solid waste-based low-sulfur fuel and seawater desalination based on biochar, including a microwave pyrolysis furnace. The microwave pyrolysis furnace is provided with a biomass inlet and a waste tire inlet. The microwave pyrolysis furnace is provided with a wind-powered cutting and stirring mechanism. The microwave pyrolysis furnace is connected to a cooling mechanism. The cooling mechanism includes an oil condensation section connected to the microwave pyrolysis furnace. The oil condensation section is connected to a collection section and a water condensation section. The water condensation section is connected to the inside of the microwave pyrolysis furnace. The microwave pyrolysis furnace is electrically connected to a wind turbine generator.

[0007] Optionally, the microwave pyrolysis furnace is equipped with a seawater spraying device at the top, and the seawater spraying device is connected to the water condensation section.

[0008] Optionally, the microwave pyrolysis furnace is equipped with a carbon leakage mechanism, and the wind-powered cutting and stirring mechanism is located below the carbon leakage mechanism. The wind-powered cutting and stirring mechanism is electrically connected to the wind turbine.

[0009] Optionally, the wind-powered cutting and stirring mechanism includes a transmission component, which is connected to a rotating wheel, a cutting component, and a stirring component.

[0010] Optionally, the rotating wheel is connected to a heat-insulating chassis, and the heat-insulating chassis is provided with multiple carbon leakage holes at equal intervals in the circumferential direction.

[0011] Optionally, the rotating wheel component includes a drive shaft that is connected to the transmission component. A lever assembly is fixedly connected to the bottom of the drive shaft. A heat-insulating turntable is provided at the bottom of the lever assembly. A plurality of through holes are provided at equal intervals on the heat-insulating turntable. A blank area is provided in the center of the heat-insulating turntable. A baffle is provided in the blank area.

[0012] Optionally, the microwave pyrolysis furnace is equipped with an external electric heating module.

[0013] Optionally, the bottom of the oil condenser is connected to a tar collection section, the oil condenser is connected to a heat transfer oil storage tank, the heat transfer oil storage tank is connected to an oil preheating component, and the oil preheating component is connected to the oil condenser.

[0014] Optionally, the water condensation section is connected to a first gas holder and a second gas holder.

[0015] Optionally, the waste tire inlet is connected to a preheated tire storage box, which is located between the water condensation section and the first gas holder.

[0016] The present invention discloses the following technical effects:

[0017] 1. It has achieved the synergistic high-value utilization of multiple solid wastes.

[0018] A single system simultaneously solves the treatment challenges of two different types of solid waste: biomass and waste tires. The functional modules are not simply stacked together, but rather achieve an organic integration of "waste-to-waste" treatment: utilizing the abundant hydroxyl and C=C bonds on the surface of biomass pyrolysis char as reaction sites, the system captures and immobilizes sulfides from waste tire pyrolysis. These sulfides undergo dehydration or addition reactions with the functional groups, anchoring themselves on the char surface in a stable organic sulfur form. Therefore, biomass pyrolysis char is directly used as an online desulfurizing agent for waste tire pyrolysis, eliminating the cost and steps of adding additional desulfurizing agents; the high calorific value of waste tires also contributes to the overall system's thermal balance. This highly synergistic design not only treats two types of solid waste simultaneously but also produces low-sulfur clean fuels that are difficult to obtain through traditional single pyrolysis, greatly enhancing the added value and market competitiveness of the products.

[0019] 2. A highly efficient pyrolysis process for renewable energy has been achieved.

[0020] This invention couples excess wind power, which is poorly grid-friendly and prone to curtailment, with the energy-intensive pyrolysis of biomass and waste tires. This not only provides clean, low-cost energy for the pyrolysis reaction, effectively solving the problem of wind power integration, but also fundamentally replaces the traditional pyrolysis method that relies on fossil fuels or grid power, significantly reducing system operating costs and carbon emissions. By converting unstable wind energy into stable thermal energy for chemical conversion, the green, economical, and sustainable energy supply of the entire system is ensured.

[0021] 3. Environmentally friendly, it has established a closed-loop recycling system of "solid waste-energy-resources".

[0022] The system utilizes wind power, a clean energy source, throughout the entire process, eliminating secondary pollution from fossil fuel combustion. Simultaneously, all materials used in the production process undergo complete resource recovery: biomass and waste tires, two troublesome solid wastes, are converted into high-value, low-sulfur fuels; biochar produced during pyrolysis is internally recycled; and the byproduct pyrolysis water is collected for agricultural irrigation, avoiding wastewater discharge problems. Furthermore, excess heat generated by the system is further utilized for seawater desalination, tire preheating, and, when necessary, preheating the microwave pyrolysis furnace, significantly improving resource utilization. The entire system integrates solid waste treatment, energy conversion, and resource recycling into a closed loop, with no secondary pollution throughout, aligning with the green, circular, and sustainable development principles. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0024] Figure 1This is a schematic diagram of the structure of the synergistic system of biochar-based solid waste-based low-sulfur fuel and seawater desalination of the present invention.

[0025] Figure 2 This is a schematic diagram of the structure of the wind-powered cutting and stirring mechanism of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of the rotating wheel component of the present invention;

[0027] Figure 4 This is a top view of the rotating wheel component of the present invention.

[0028] Figure label:

[0029] 1. Wind turbine generator; 2. Electric heating module; 3. Biomass feed inlet; 4. Carbon leakage mechanism; 5. Waste tire feed inlet; 6. Wind-powered cutting and stirring mechanism; 7. Microwave pyrolysis furnace; 8. Seawater spraying component; 9. Thermal oil storage tank; 10. Oil preheating section; 11. Oil condensation section; 12. Tar collection section; 13. Water condensation section; 14. Preheated tire storage box; 15. First gas holder; 16. Second gas holder; 17. Transmission component; 19. Rotating wheel component; 20. Cutting component; 21. Stirring component; 22. Insulated chassis; 24. Carbon leakage hole; 25. Drive shaft; 26. Lever assembly; 27. Insulated turntable; 28. Through hole; 30. Blank area; 31. Baffle. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Reference Figures 1 to 4 As shown, this embodiment provides a co-processing system for solid waste-based low-sulfur fuel and seawater desalination based on biochar, including a microwave pyrolysis furnace 7. The microwave pyrolysis furnace 7 is provided with a biomass inlet 3 and a waste tire inlet 5. The microwave pyrolysis furnace 7 is provided with a wind-powered cutting and stirring mechanism 6. The microwave pyrolysis furnace 7 is connected to a cooling mechanism, which includes an oil condensation section 11 connected to the microwave pyrolysis furnace 7. The oil condensation section 11 is connected to a collection section and a water condensation section 13. The water condensation section 13 is connected to the inside of the microwave pyrolysis furnace 7. The microwave pyrolysis furnace 7 is electrically connected to a wind turbine generator 1.

[0033] Biomass and waste tires are added to the microwave pyrolysis furnace 7 through the biomass inlet 3 and the waste tire inlet, respectively. The connection between the microwave pyrolysis furnace 7 and the water condensation section 13 is opened, and the wind turbine generator 1 is started to heat the microwave pyrolysis furnace 7 to a predetermined temperature, causing the biomass to pyrolyze and generate a high-temperature oil-gas mixture, which is discharged from the exhaust port at the top of the microwave pyrolysis furnace 7. When the biomass and seawater in the microwave pyrolysis furnace 7 co-pyrolyze to produce biochar, the wind-powered cutting and stirring mechanism 6 is activated, so that the biomass pyrolysis carbon and the waste tire mixture are vigorously and uniformly stirred at high temperature. This efficient physical mixing greatly promotes the contact and reaction between the active functional groups on the surface of the biomass pyrolysis carbon and the sulfur-containing gas generated by the pyrolysis of waste tires, thereby achieving efficient online desulfurization. The high-temperature oil-gas mixture generated by the reaction is discharged from the exhaust port at the bottom of the microwave pyrolysis furnace 7 and enters the subsequent cooling mechanism. The gases generated in the above steps are cooled separately to avoid contamination between gases, but the cooling paths of the two are the same. The high-temperature oil-gas mixture produced by pyrolysis enters the oil condenser section 11, where heat transfer oil is used to condense the tar. The remaining gas enters the water cooling section, where water vapor is condensed and collected in a condensate collector. Seawater is used for condensation in this stage, and this heat can be utilized for seawater desalination.

[0034] This invention utilizes microwave heating technology to co-pyrolyze biomass and seawater, and uses biomass pyrolysis carbon as a desulfurizing agent to co-treat waste tires. Finally, through fine segmented cooling, low-sulfur fuel and usable pyrolysis water are obtained.

[0035] The design was further optimized by installing a seawater spraying element 8 at the top of the microwave pyrolysis furnace 7, which is connected to the water condensation section 13.

[0036] Biomass and waste tires are added to microwave pyrolysis furnace 7 through biomass inlet 3 and waste tire inlet respectively, and seawater spraying device 8 is turned on.

[0037] To further optimize the design, the microwave pyrolysis furnace 7 is equipped with a carbon leakage mechanism 4, and a wind-powered cutting and stirring mechanism 6 is located below the carbon leakage mechanism 4. The wind-powered cutting and stirring mechanism 6 is electrically connected to the wind turbine generator 1. The carbon leakage mechanism 4 separates the upper and lower parts of the microwave pyrolysis furnace 7. The two parts are relatively independent and react independently. The products after the reaction are also discharged through their respective exhaust ports.

[0038] The scheme is further optimized. The wind-powered cutting and mixing mechanism 6 includes a transmission component 17, which is connected to the rotating wheel component 19, the cutting component 20 and the mixing component 21 respectively.

[0039] In a further optimized design, the rotating wheel component 19 is connected to a heat-insulated chassis, and the heat-insulated chassis 22 is provided with multiple carbon leakage holes 24 at equal intervals in the circumferential direction.

[0040] The waste tires are cut using the excess wind energy of the wind turbine 1, and the cut tires are mixed with biochar. The kinetic energy generated by the wind turbine 1 is transmitted to the rotating wheel 19, the cutting component 20, and the mixing component 21 through a series of transmission components 17. The heat-insulated turntable 27 is rotated to align its through-hole 28 with the carbon leakage hole 24 of the heat-insulated base 22, allowing the biochar to fall. The cutting component 20 is rotated to cut the waste tires, and the mixing component 21 is rotated to thoroughly mix the biochar and waste tires. It is worth noting that after the heat-insulated turntable 27 is rotated to align its hole with the hole of the heat-insulated base 22 and the biochar falls, the heat-insulated turntable 27 needs to be rotated again to offset the hole and separate the upper and lower parts of the microwave pyrolysis furnace 7 to prevent the pyrolysis gases from mixing and causing pollution. The low-sulfur gas produced by the co-pyrolysis of biochar and waste tires enters the condensation system from the lower part of the pyrolysis furnace.

[0041] In a further optimized design, the rotating wheel component 19 includes a drive shaft 25 that is connected to the transmission component 17. A lever assembly 26 is fixedly connected to the bottom of the drive shaft 25. A heat-insulating turntable 27 is provided at the bottom of the lever assembly 26. Multiple through holes 28 are provided at equal intervals on the heat-insulating turntable 27. A blank area 30 is provided in the center of the heat-insulating turntable 27. A baffle 31 is provided in the blank area 30.

[0042] When the heat insulation turntable 27 is not required to rotate, the blank area 30 of the heat insulation turntable 27 is separated from the lever assembly 26. When we need the heat insulation turntable 27 to rotate so that its holes are aligned with the carbon leakage holes 24 of the heat insulation base 22 below, we engage the blank area 30 with the lever assembly 26. When the lever encounters the baffle 31, it drives the heat insulation turntable 27 to rotate to align with its holes.

[0043] The design has been further optimized by adding an electric heating module 2 to the outside of the microwave pyrolysis furnace 7.

[0044] The wind turbine generator 1 is started, and the excess electrical energy it generates is directly supplied to the microwave heating module integrated on the outer wall of the microwave pyrolysis furnace 7, thereby realizing the direct driving heating of the pyrolysis process by wind power.

[0045] In a further optimized design, the bottom of the oil condenser 11 is connected to a tar collection section 12, the oil condenser 11 is connected to a heat transfer oil storage tank 9, the heat transfer oil storage tank 9 is connected to an oil preheating component, and the oil preheating component is connected to the oil condenser 11.

[0046] The high-temperature oil-gas mixture produced by pyrolysis enters the oil condensation section 11, where most of the high-boiling-point bio-oil is condensed and collected using the tar collection section 12. During this stage, heat transfer oil is used to condense the tar. The heat transfer oil, which absorbs a large amount of heat, is collected in a heat transfer oil storage tank. If necessary, this portion of the heat transfer oil can be transferred to the oil preheating section 10 to preheat the microwave pyrolysis furnace 7.

[0047] The scheme has been further optimized so that the water condensation section 13 is connected to the first gas holder 15 and the second gas holder respectively.

[0048] The scheme is further optimized so that the waste tire inlet 5 is connected to the preheated tire storage box 14, which is located between the water condensation section 13 and the first gas holder 15.

[0049] The remaining gas enters the water cooling section, where water vapor is condensed and collected in a condensate collector. Seawater is used for condensation in this stage, and this heat can be utilized for seawater desalination. The remaining gas is collected using the first gas holder 15 and the second gas holder 16. Before collection, the waste tires can be preheated in the preheated tire storage box 14. This allows for full utilization of the heat generated by the system.

[0050] Workflow

[0051] 1. Raw material preparation and system startup mode:

[0052] First, biomass and waste tires are fed into the microwave pyrolysis furnace 7 through their respective inlets. Then, seawater is introduced into the microwave pyrolysis furnace 7 through the seawater sprayer 8, allowing the biomass and seawater to mix thoroughly. When the wind turbine 1 generates excess electrical energy, the energy is transmitted to the microwave pyrolysis furnace 7 via the wind power control and microwave oven power supply module.

[0053] 2. Biomass and seawater co-pyrolysis model:

[0054] Some salts in seawater can be considered a natural catalyst, efficiently immobilizing pollutants and producing higher-quality fuel. A wind-powered microwave pyrolysis furnace 7 heats the biomass-seawater mixture within the reactor. The system controls the reaction temperature in real time, and the biomass and seawater undergo a co-pyrolysis reaction, producing a large amount of oil-gas-water mixture.

[0055] 3. Synergistic pyrolysis and desulfurization mode:

[0056] Biochar produced by co-pyrolysis of biomass and seawater is co-pyrolyzed with waste tires. When there is excess wind power, the biochar from the pyrolysis is dropped through a char-leaking mechanism 4 and a wind-powered cutting and stirring mechanism 6, and thoroughly mixed with the waste tires. During the co-pyrolysis of biochar and waste tires, the active functional groups such as hydroxyl groups and carbon-carbon double bonds in the biochar can react with sulfides to form solid organic sulfur, which is further converted into thiophene, thus inhibiting the re-decomposition of solid organic sulfur. Therefore, biochar can serve as a good sulfur capture and fixative. This achieves efficient desulfurization of waste tire pyrolysis products while simultaneously generating low-sulfur oil and gas.

[0057] 4. Product segmented cooling and separation mode:

[0058] The oil-gas-water mixture produced by the pyrolysis reactor enters the pyrolysis product staged cooling and separation subsystem. First, it enters the oil condensation section 11, where the cooling temperature is controlled at approximately 300°C, condensing most of the bio-oil and collecting it in the tar collection section 12. Heat transfer oil is used for cooling in this stage, and the heat absorbed by the oil can be stored to preheat the microwave pyrolysis furnace 7. The uncondensed oil-gas and water vapor continue into the water condensation section 13, where the cooling temperature is controlled at approximately 100°C, condensing most of the water vapor into liquid water, which is then collected. Seawater is used for cooling in this stage, and this heat is also utilized for seawater desalination. After two stages of condensation, the remaining non-condensable gas is collected in a gas holder. During the collection process, the heat from this gas can be used to preheat waste tires.

[0059] 5. Energy and resource cycle model:

[0060] This invention effectively utilizes surplus wind power through a wind-power coupled power supply module, reducing the energy cost of the pyrolysis process. The carbon produced by biomass pyrolysis is recycled as a desulfurizing agent for waste tires, achieving resource recycling and high-value utilization. Pyrolysis condensate, as a byproduct, is used for irrigation, avoiding wastewater discharge and forming a sustainable production loop.

[0061] A synergistic treatment method for online desulfurization of waste tire pyrolysis gas using biomass pyrolysis byproducts is proposed. The method utilizes solid byproducts from biomass pyrolysis as a functional reactant, allowing them to fully mix and react with waste tires during pyrolysis. The active functional groups abundant in biomass pyrolysis carbon capture and fix the sulfides generated from waste tire pyrolysis. Active functional groups such as hydroxyl and C=C bonds react with sulfur to form stable organic sulfur compounds. H2S and thiol compounds combine with hydroxyl / C=C bonds on the carbon (CA) through dehydration or addition reactions, forming thiol compounds on the CA surface. The generated thiol compounds are further converted into thiophene, effectively inhibiting the re-decomposition of solid organic sulfur and achieving high-value reuse of solid waste byproducts. This fundamentally solves the problem of high sulfur content and the need for additional desulfurization in traditional waste tire pyrolysis products.

[0062] An energy utilization method that efficiently couples intermittent wind power with solid waste pyrolysis: the excess or unstable electrical energy generated by the wind turbine 1 is directly supplied to the microwave or electric heating part of the pyrolysis system; the intermittent energy that was originally difficult to utilize is converted into stable thermal energy to drive endothermic chemical reactions, thereby simultaneously solving the two major problems of wind power consumption and high energy consumption in the pyrolysis process, and realizing the empowerment of clean energy for the treatment of highly polluting solid waste.

[0063] An integrated method for utilizing wind energy for both heating and physical stirring is proposed. This method diverts wind energy from a single source, converting the energy into heat via electricity to drive a pyrolysis reaction and a multifunctional system, thereby mixing solid materials within the reactor. Simultaneously, the heat from the three-stage condensation process is fully utilized. This integrated, multi-purpose energy design ensures efficient chemical reactions and improves the overall energy efficiency of the system.

[0064] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0065] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A synergistic system for solid waste-based low-sulfur fuel and seawater desalination based on biochar, characterized in that: The microwave pyrolysis furnace (7) is provided with a biomass inlet (3) and a waste tire inlet (5). The microwave pyrolysis furnace (7) is provided with a wind-powered cutting and stirring mechanism (6). The microwave pyrolysis furnace (7) is connected to a cooling mechanism. The cooling mechanism includes an oil condensation section (11) connected to the microwave pyrolysis furnace (7). The oil condensation section (11) is connected to a collection section and a water condensation section (13). The water condensation section (13) is connected to the inside of the microwave pyrolysis furnace (7). The microwave pyrolysis furnace (7) is electrically connected to a wind turbine generator (1). The microwave pyrolysis furnace (7) is equipped with a carbon leakage mechanism (4), and the wind-powered cutting and stirring mechanism (6) is located below the carbon leakage mechanism (4). The wind-powered cutting and stirring mechanism (6) is electrically connected to the wind turbine generator (1). The carbon leakage mechanism (4) separates the upper and lower parts of the microwave pyrolysis furnace (7). The biomass feed inlet (3) is located above the carbon leakage mechanism (4), and the waste tire feed inlet (5) is located below the carbon leakage mechanism (4). The two parts are relatively independent and react independently. The products after the reaction are also discharged through their respective exhaust ports. The wind-powered cutting and stirring mechanism (6) includes a transmission component (17), which is connected to a wheel rotating component (19), a cutting component (20), and a stirring component (21). The rotating wheel (19) is connected to a heat-insulating chassis (22), and the heat-insulating chassis (22) is provided with multiple carbon leakage holes (24) at equal intervals in the circumferential direction. The wheel rotating component (19) includes a transmission shaft (25) that is connected to the transmission component (17). A lever assembly (26) is fixed to the bottom of the transmission shaft (25). A heat-insulating turntable (27) is provided at the bottom of the lever assembly (26). A plurality of through holes (28) are provided on the heat-insulating turntable (27) at equal intervals. Rotate the heat-insulating turntable (27) to align the through hole (28) with the carbon leakage hole (24) of the heat-insulating base (22), allowing the biochar to fall, rotate the cutting component (20) to cut the waste tire, and rotate the stirring component (21) to fully mix the biochar and the waste tire.

2. The synergistic system for biochar-based solid waste-based low-sulfur fuel and seawater desalination according to claim 1, characterized in that: The microwave pyrolysis furnace (7) is equipped with a seawater spraying device (8) at the top, and the seawater spraying device (8) is connected to the water condensation section (13).

3. The synergistic system for solid waste-based low-sulfur fuel and seawater desalination based on biochar according to claim 1, characterized in that: The heat insulation turntable (27) has a blank area (30) in the center, and a baffle (31) is provided in the blank area (30).

4. The synergistic system for solid waste-based low-sulfur fuel and seawater desalination based on biochar according to claim 1, characterized in that: The microwave pyrolysis furnace (7) is equipped with an electric heating module (2).

5. The synergistic system for solid waste-based low-sulfur fuel and seawater desalination based on biochar according to claim 1, characterized in that: The bottom of the oil condenser (11) is connected to a tar collection section (12), the oil condenser (11) is connected to a heat transfer oil storage tank (9), the heat transfer oil storage tank (9) is connected to an oil preheating component, and the oil preheating component is connected to the oil condenser (11).

6. The synergistic system for solid waste-based low-sulfur fuel and seawater desalination based on biochar according to claim 1, characterized in that: The water condensation section (13) is connected to the first gas holder (15) and the second gas holder respectively.

7. The synergistic system for solid waste-based low-sulfur fuel and seawater desalination based on biochar according to claim 6, characterized in that: The waste tire inlet (5) is connected to a preheated tire storage box (14), which is located between the water condensation section (13) and the first gas holder (15).

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