Method and system for preparing green fuel by biomass pyrolysis and solid-solid separator thereof

Abstract

This invention discloses a method, system, and solid-solid separator for preparing green fuel from biomass pyrolysis, relating to the field of biomass system technology, and solving the problem of low efficiency in preparing green fuel from biomass pyrolysis. The method for preparing green fuel from biomass pyrolysis includes the following steps: S1, drying the biomass raw material to reduce the moisture content to below 5%, with the drying heat source coming from the waste heat flue gas generated within the system; S2, the dried raw material and heat carrier are fed into a gravity-mixing pyrolysis reactor in equal proportion, where the raw material and heat carrier are fully mixed and heat transferred, resulting in a pyrolysis reaction that generates pyrolysis oil and gas and biochar. In this invention, heat carrier pyrolysis technology is combined with fluidized bed heating technology. The heat carrier heating uses a fluidized bed heater, and the fuel is waste biomass resources, achieving decoupling between the pyrolysis reactor and the heat carrier heating system, reducing external grid power consumption, and improving the green properties and efficiency of the products.

Description

Technical Field

[0001] This invention relates to the field of biomass system technology, specifically to a method, system and solid-solid separator for preparing green fuel by biomass pyrolysis. Background Technology

[0002] Biomass resources are a globally recognized renewable energy source, characterized by their abundance and wide distribution. Pyrolysis technology is one of the technologies for the high-value utilization of biomass, producing green liquid fuels.

[0003] Conventional pyrolysis technologies mainly include rotary kiln pyrolysis and fluidized bed pyrolysis. Rotary kiln pyrolysis uses external wall heat transfer to pyrolyze biomass feedstocks. However, it involves sealing the kiln ends, posing a safety hazard due to pyrolysis gas leakage. Furthermore, the external wall heat transfer rate is relatively slow, affecting the yield of pyrolysis liquid products. Fluidized bed pyrolysis requires fluidizing gas to achieve mass and heat transfer between the material and the bed. The degree of pyrolysis in fluidized bed pyrolysis is highly susceptible to fluctuations in feedstock or process parameters, and the fluidizing gas requires additional power, resulting in high energy consumption. In addition, pyrolysis gas in conventional pyrolysis technologies is typically used for system heating, but its calorific value is generally 3500-4300 kcal / Nm3, classifying it as a medium-calorific-value fuel gas, making its use for system heating wasteful.

[0004] The shortcomings of existing technologies: (1) Existing biomass pyrolysis technology relies heavily on external electricity for power consumption, which reduces the green properties of biochar and bio-oil in the products, and reduces the requirements for the green properties of green methanol and green jet fuel. (2) Most existing biomass pyrolysis reactors are mechanically driven and mixed devices. The high-temperature dynamic sealing of mechanical devices is difficult and prone to leakage of biomass gas, posing a high safety hazard. (3) Most existing fast pyrolysis reactors use a single external / internal heating heat source. The introduction of cold materials can lead to an uneven temperature field within the reactor, which is detrimental to the stable progress of the fast pyrolysis reaction and affects the material yield. Summary of the Invention

[0005] The purpose of this invention is to provide a method, system and solid-solid separator for preparing green fuel by biomass pyrolysis, so as to solve the problems mentioned in the background art.

[0006] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0007] This invention provides a method for preparing green fuel by biomass pyrolysis, comprising the following steps:

[0008] S1. The biomass raw materials are dried to reduce the moisture content to below 5%. The drying heat source comes from the waste heat flue gas generated in the system.

[0009] S2. The dried raw materials and heat carrier are fed into the gravity mixing pyrolysis reactor in equal proportion. The raw materials and heat carrier are fully mixed and heat transferred in the gravity mixing pyrolysis reactor, and a pyrolysis reaction occurs to generate pyrolysis oil and gas and biochar.

[0010] S3. After a large amount of particulate matter is filtered out by the first-stage pyrolysis oil gas cyclone separator and the second-stage pyrolysis oil gas cyclone separator, the pyrolysis oil gas enters the first-stage spray tower and the second-stage spray tower for spray cooling to obtain biomass gas and bio-oil. The bio-oil is sent out for storage as a product, and the biomass gas is transported to the gas generator by the biomass gas induced draft fan to generate electricity for the power system's own use.

[0011] S4. Biochar and solid heat carrier from the pyrolysis system enter the solid-solid separator for effective separation to obtain biochar and solid heat carrier. The biochar is cooled and sold as a product.

[0012] S5. The separated heat carrier enters the fluidized bed heater for heating treatment. The heat source is biomass raw material. After being discharged from the fluidized bed heater, the heated heat carrier is lifted to the heat carrier storage bin by a high-temperature heat carrier elevator.

[0013] S6. The flue gas generated by the fluidized bed heating furnace is treated by dust removal and then the waste heat is recovered by an air preheater. The waste heat flue gas is then transported to a tubular dryer as a heat source for drying raw materials.

[0014] This invention also provides a system for preparing green fuel from biomass pyrolysis. The system includes: a drying and feeding system, a tubular dryer, a drying material cyclone, a furnace top material feeding system, a furnace top heat carrier conveying system, a gravity mixing pyrolysis reactor, a lower heat carrier storage chamber, a primary pyrolysis oil-gas cyclone separator, a secondary pyrolysis oil-gas cyclone separator, a pyrolysis cyclone cooling and conveying screw, a primary spray tower, a primary heat exchanger, a primary spray pump, a secondary spray tower, a secondary heat exchanger, a secondary spray pump, a biomass gas induced draft fan, a gas generator, a lower heat carrier storage chamber discharge screw, a solid-solid separator, a solid-solid separation cyclone, a solid-solid separation biochar cooling and conveying screw, a solid-solid separation fan, a fluidized bed heat carrier feeding system, a fluidized bed heater, a fluidized bed raw material feeding system, an air preheater, a fluidized bed combustion blower, a heating heat carrier conveying screw, a drying material fan, and a high-temperature heat carrier elevator.

[0015] The drying feed system, tubular dryer, drying material cyclone, and furnace top material feed system are connected in sequence. The gravity mixing pyrolysis reactor, lower heat carrier storage chamber, primary pyrolysis oil-gas cyclone separator, secondary pyrolysis oil-gas cyclone separator, primary spray tower, and secondary spray tower are connected in sequence. The biomass gas induced draft fan and gas generator are connected in sequence. The solid-solid separator, solid-solid separation cyclone, and solid-solid separation biochar cooling conveying screw are connected in sequence. The solid-solid separator, fluidized bed heat carrier feed system, fluidized bed heater, heating heat carrier conveying screw, and high-temperature heat carrier elevator are connected in sequence. The fluidized bed heater, air preheater, drying material fan, and tubular dryer are connected in sequence.

[0016] In a preferred embodiment of the present invention, the high-temperature heat carrier elevator transports the heat carrier to the interior of the furnace top heat carrier conveying system, and then through the furnace top heat carrier conveying system to the interior of the gravity mixing pyrolysis reactor, thereby realizing the circulation of the heat carrier.

[0017] The discharge ports of the primary pyrolysis oil-gas cyclone separator and the secondary pyrolysis oil-gas cyclone separator are connected to a pyrolysis cyclone cooling conveyor screw.

[0018] The primary spray tower is connected to the primary heat exchanger via a primary spray pump, and the secondary spray tower is connected to the secondary heat exchanger via a secondary spray pump.

[0019] The lower heat carrier storage chamber is connected to a solid-solid separator via a discharge screw, and the solid-solid separator is connected to a fluidized bed heater via a fluidized bed heat carrier feeding system. The fluidized bed raw material feeding system is also connected to the fluidized bed heater.

[0020] The air preheater and the fluidized bed combustion blower are connected.

[0021] As a preferred embodiment of the present invention, the interior of the gravity mixing pyrolysis reactor includes: a top chute wall of the pyrolysis reactor, a heating pipe of the distribution mechanism, an inner wall guide, a guide wall of the heating pipe of the distribution mechanism, an outer wall of the mixing throat of the pyrolysis reactor, a mixing throat of the pyrolysis reactor, a bottom chute wall of the pyrolysis reactor, a flue gas connection pipe, a flue gas outlet, and a flue gas inlet.

[0022] The self-weight mixing pyrolysis reactor has a square structure. Inside the self-weight mixing pyrolysis reactor, there are heating pipes for the material distribution mechanism and material guide walls for the heating pipes of the material distribution mechanism. The upper inlet of the self-weight mixing pyrolysis reactor is provided with a top chute wall. The middle part of the self-weight mixing pyrolysis reactor is provided with a mixing throat guide wall. The bottom of the self-weight mixing pyrolysis reactor is provided with a bottom chute wall.

[0023] In a preferred embodiment of the present invention, the heating tubes of the material distribution mechanism and the guide walls of the heating tubes of the material distribution mechanism are arranged in an alternating manner inside the gravity mixing pyrolysis reactor, and an inner wall guide is provided on the furnace wall of the gravity mixing pyrolysis reactor.

[0024] The opening portion of the outer wall of the mixing throat of the pyrolysis reactor constitutes the mixing throat of the pyrolysis reactor. A flue gas connecting pipe is arranged on the side of the heating pipe of the distributing mechanism and the material guiding wall of the heating pipe of the distributing mechanism. The flue gas connecting pipe is bent. One end of the flue gas connecting pipe is provided with a flue gas outlet, and the other end of the flue gas connecting pipe is provided with a flue gas inlet.

[0025] This invention also provides a solid-solid separator for biomass pyrolysis to produce green fuel. The solid-solid separator includes a solid separation device, wherein a discharge screw in the lower heat carrier storage chamber transports the heat carrier to the interior of the solid separation device, and a solid-solid separation cyclone is connected to the top of the solid separation device.

[0026] The solid separation device is internally equipped with a multi-stage vibrating material distribution structure, which is connected to the fluidized bed heat carrier feeding system.

[0027] The multi-stage vibration distribution structure includes: a solid material separation component installed inside the solid separation device; a solid conveying channel is provided between the solid material separation component and the inner wall of the multi-stage vibration distribution structure; a linear vibration generating component extending into the interior is installed on one side of the top of the solid separation device; and the bottom of the linear vibration generating component abuts against the solid material separation component.

[0028] In a preferred embodiment of the present invention, the solid separation device includes: a conical tower body, a dispensing tank mounted on the bottom of the conical tower body by screws, the dispensing tank being mounted on the top of the cyclone generating unit, and a gas pipeline penetrating through the center of the conical tower body, the gas pipeline being connected to the solid-solid separation cyclone.

[0029] The cyclone generating unit has a central pipe extending into the conical tower body at its top. An inner conical screen plate is installed at the top of the central pipe, and an outer conical screen plate is installed on the outer side of the top of the central pipe. The central pipe and the inner wall of the distribution tank form a solid conveying channel.

[0030] The material distribution tank is equipped with a solid material separation component located outside the intermediate pipeline, and a linear vibration generating component extending into the interior is provided at the eccentric position at the top of the material distribution tank.

[0031] As a preferred embodiment of the present invention, the solid material separation component includes:

[0032] A conical screening plate is slidably connected to the outside of the intermediate pipeline and to the inside of the distribution tank. The top of the conical screening plate abuts against a linear vibration generator.

[0033] The conical screening plate has three conical plates inside. The top two conical plates have multiple material distribution ports inside. A side discharge port is provided on one side of the conical screening plate. The side discharge port is connected to a discharge pipe installed on the side of the material distribution tank. The discharge pipe is connected to the fluidized bed heat carrier feeding system.

[0034] A reset spring is provided, which is connected to the bottom of the conical screening plate. Multiple reset springs are provided and installed at the eccentric position on the top of the cyclone generating unit.

[0035] As a preferred embodiment of the present invention, the linear vibration generating component includes:

[0036] A linear drive source is installed on one side of the top eccentric position of the cyclone generator unit. The output end of the linear drive source is connected to a rotating cam, and the rotating cam is rotatably connected to the side of a movable disk.

[0037] The movable disk is rotatably connected to one side of the top eccentric part of the cyclone generating unit;

[0038] The upper convex part is installed on the outer side of the movable disk, and a limiting protrusion is installed on the side of the upper convex part. The rotating convex disk drives the movable disk to rotate by colliding with the limiting protrusion.

[0039] A connecting arm is rotatably connected to the side of the upper protrusion, and a telescopic rod is rotatably connected to the bottom of the connecting arm, the telescopic rod extending into the interior of the cyclone generating unit.

[0040] In a preferred embodiment of the present invention, a stop block is slidably connected to the outside of the telescopic rod and inside the cyclone generating unit, and a telescopic spring sleeved on the outside of the telescopic rod is connected to the top of the stop block.

[0041] The bottom of the telescopic rod is connected to a rubber collision block via a vibration spring. The rubber collision block is sleeved on the outside of the bottom of the telescopic rod and its bottom abuts against the conical screening plate.

[0042] Compared with existing technologies, one or more of the above technical solutions have the following beneficial effects: 1. In the method, system, and solid-solid separator for preparing green fuel through biomass pyrolysis, a heat carrier pyrolysis technology is coupled with a fluidized bed heater technology to convert biomass feedstock into biochar and pyrolysis oil and gas. The pyrolysis oil and gas are condensed to obtain biomass gas and bio-oil. The biomass gas is transported to a gas turbine generator set for power generation and is used within the power system; the biomass liquid and biochar are sold as products. The fluidized bed heater is used for circulating heating of the heat carrier, utilizing waste biomass resources as feedstock, and the waste heat is used to provide a drying heat source for the pyrolysis feedstock. Thus, the system utilizes renewable waste biomass resources, significantly reducing the use of grid electricity, effectively improving the green attributes of biochar and bio-oil, and satisfying the green attributes of bio-oil as a green methanol or green jet fuel feedstock. 2. In the methods, systems, and solid-solid separators for biomass pyrolysis to produce green fuels, the "gravity-mixed pyrolysis reactor," through its special design, can achieve sufficient mass and heat transfer between the raw materials and the heat carrier by relying on their own gravity, reducing the safety risk of biomass gas leakage. Simultaneously, the built-in flue of the gravity-mixed pyrolysis reactor enables dual heating through both "radiative heating" of the high-temperature waste heat flue gas and "direct heating" of the heat carrier, which is beneficial to the stability of the temperature field within the pyrolysis reactor, thereby ensuring rapid and complete pyrolysis, as well as the yield and quality characteristics of bio-oil. 3. In the methods, systems, and solid-solid separators for preparing green fuel through biomass pyrolysis, when classifying solid materials, multi-stage screening and the elastic vibration of the structure (conical screening plates) driving the multi-stage screening are employed. This ensures that the material continuously "jumps" and tumbles, increasing the chance for small particles to pass through the internal sieve holes of the conical screening plates, preventing material blockage or accumulation, and thus significantly increasing the throughput per unit time. Furthermore, it accelerates the stratification of material along the screen surface according to particle size, allowing fine particles to quickly contact the screen surface and pass through, improving grading accuracy and ensuring the effective stratification of the material.

[0043] It should be noted that when the conical screen plate vibrates to improve the material screening effect, the "throwing-falling" motion generated by elastic energy storage causes the material to be continuously thrown up and dispersed on the screen surface. This not only prevents material accumulation but also allows particles smaller than the screen openings to fall smoothly through a brief state of weightlessness. At the same time, the vibration itself also helps to shake off particles stuck in the screen openings, achieving a self-cleaning effect. Attached Figure Description

[0044] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0045] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0046] Figure 1 This is a schematic diagram of the system for preparing green fuel according to the present invention;

[0047] Figure 2 This is a schematic diagram of the connection between the drying feed system and the primary heat exchanger of the present invention;

[0048] Figure 3 This is a schematic diagram of the system connecting the primary spray tower and the gas generator of the present invention;

[0049] Figure 4 This is a schematic diagram of the system connecting the self-weight mixing pyrolysis reactor and the high-temperature heat carrier elevator of the present invention;

[0050] Figure 5 This is a schematic diagram of the structure of the self-weight mixing pyrolysis reactor of the present invention, viewed from the AA section.

[0051] Figure 6 This is a schematic diagram of the BB section of the self-weight mixing pyrolysis reactor of the present invention;

[0052] Figure 7 This is a schematic diagram of the solid-solid separator of the present invention;

[0053] Figure 8 This is a cross-sectional structural schematic diagram of the solid-solid separator of the present invention;

[0054] Figure 9 This is a cross-sectional schematic diagram of the multi-stage vibration material distribution structure inside the solid-solid separator of the present invention;

[0055] Figure 10 This is the present invention. Figure 7 Schematic diagram of the structure viewed from the middle II-II' section;

[0056] Figure 11 This is a cross-sectional structural diagram showing the connection between the material distribution tank and the solid material separation component of the present invention;

[0057] Figure 12 This is the present invention. Figure 11 Enlarged structural diagram of region A in the middle;

[0058] Figure 13 This is a cross-sectional structural schematic diagram of the solid separation device of the present invention;

[0059] Figure 14 This is a cross-sectional view of the material distribution tank of the present invention.

[0060] Figure 15 This is a schematic diagram of the linear vibration generating component of the present invention;

[0061] Figure 16 This is a cross-sectional structural diagram showing the connection between the telescopic rod and the rubber collision block of the present invention;

[0062] In the picture:

[0063] 1. Drying feeding system; 2. Tubular dryer; 3. Drying material cyclone; 4. Furnace top material feeding system; 5. Furnace top heat carrier conveying system; 6. Gravity mixing pyrolysis reactor; 7. Lower heat carrier storage chamber; 8. Primary pyrolysis oil-gas cyclone separator; 9. Secondary pyrolysis oil-gas cyclone separator; 10. Pyrolysis cyclone cooling conveyor screw; 11. Primary spray tower; 12. Primary heat exchanger; 13. Primary spray pump; 14. Secondary spray tower; 15. Secondary spray pump; 16. Secondary spray pump; 17. 18. Biomass gas induced draft fan; 19. Gas generator; 20. Lower heat carrier storage chamber discharge screw; 21. Solid-solid separator; 22. Solid-solid separation cyclone; 23. Solid-solid separation biochar cooling conveying screw; 24. Solid-solid separation fan; 25. Fluidized bed heat carrier feeding system; 26. Fluidized bed heater; 27. Fluidized bed raw material feeding system; 28. Air preheater; 29. ​​Fluidized bed combustion blower; 30. Heating heat carrier conveying screw; 31. Drying material fan; 32. High-temperature heat carrier elevator;

[0064] 61. Top chute wall of the pyrolysis reactor; 62. Heating tube of the distribution mechanism; 63. Inner wall feeder; 64. Feed guide wall of the heating tube of the distribution mechanism; 65. Outer wall of the feed guide at the mixing throat of the pyrolysis reactor; 66. Mixing throat of the pyrolysis reactor; 67. Bottom chute wall of the pyrolysis reactor; 68. Flue gas connection pipe; 69. Flue gas outlet; 610. Flue gas inlet;

[0065] 201. Solid separation device; 202. Multi-stage vibration distribution structure;

[0066] 2011. Conical tower body; 2012. Material distribution tank; 2013. Cyclone generating unit; 2014. Gas pipeline; 2015. Intermediate pipeline; 2016. Inner conical screen plate; 2017. Outer conical screen plate;

[0067] 2021. Solid material separation component; 2022. Solid conveying channel; 2023. Linear vibration generating component;

[0068] 20211, Conical screening plate; 20212, Conical plate; 20213, Material distribution port; 20214, Side discharge port; 20215, Discharge pipe; 20216, Return spring;

[0069] 20231, Linear drive source; 20232, Rotating cam; 20233, Movable disc; 20234, Upper convex part; 20235, Limiting convex part; 20236, Connecting arm; 20237, Telescopic rod; 20238, Stop block; 20239, Telescopic spring; 202310, Vibration spring; 202311, Rubber collision block. Detailed Implementation

[0070] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application. Example 1

[0071] Please see Figures 1-16 A method for preparing green fuel by biomass pyrolysis includes the following steps:

[0072] S1. The biomass raw materials are dried to reduce the moisture content of the material to below 5%. The drying heat source comes from the waste heat flue gas generated in the system.

[0073] S2. The dried raw materials and heat carrier are fed into the gravity mixing pyrolysis reactor 6 in equal proportion. The raw materials and heat carrier are fully mixed and heat transferred in the gravity mixing pyrolysis reactor 6, and a pyrolysis reaction occurs to generate pyrolysis oil and gas and biochar.

[0074] S3. After a large amount of particulate matter is filtered out by the primary pyrolysis oil gas cyclone separator 8 and the secondary pyrolysis oil gas cyclone separator 9, the pyrolysis oil gas enters the primary spray tower 11 and the secondary spray tower 14 for spraying and cooling to obtain biomass gas and bio-oil. The bio-oil is sent out for storage as a product, and the biomass gas is transported to the gas generator 18 by the biomass gas induced draft fan 17 for power generation and power system self-use.

[0075] S4. Biochar and solid heat carrier from the pyrolysis system enter the solid-solid separator 20 for effective separation to obtain biochar and solid heat carrier. The biochar is cooled and sold as a product.

[0076] S5. The separated heat carrier enters the fluidized bed heater 25 for heating treatment. The heat source is biomass raw material. After heating, the heat carrier is discharged from the fluidized bed heater 25 and then lifted to the heat carrier storage bin by the high temperature heat carrier elevator 31.

[0077] S6. The flue gas generated by the fluidized bed heater 25 is treated by dust removal and then the waste heat is recovered by the air preheater 27. The waste heat flue gas is then transported to the tubular dryer 2 as a heat source for drying raw materials.

[0078] Furthermore, biomass raw materials can be agricultural waste such as straw, rice straw, rice husks, wheat straw, etc., and forestry waste such as branches, bamboo and wood and their scraps.

[0079] Furthermore, the heat transfer medium is an inorganic material, mainly composed of one or more of SiO2, Al2O3, NiO, etc.

[0080] Furthermore, the heat transfer medium temperature is 400℃~650℃.

[0081] Furthermore, the reaction temperature of the self-weight mixing pyrolysis reactor 6 is 450℃~650℃, and the pressure of the self-weight mixing pyrolysis reactor 6 is 0~5kPa. Example 2

[0082] Please see Figures 1-16The system for producing green fuel from biomass pyrolysis includes: 1. Drying and feeding system; 2. Tubular dryer; 3. Drying material cyclone; 4. Furnace top material feeding system; 5. Furnace top heat carrier conveying system; 6. Gravity mixing pyrolysis reactor; 7. Lower heat carrier storage chamber; 8. Primary pyrolysis oil-gas cyclone separator; 9. Secondary pyrolysis oil-gas cyclone separator; 10. Pyrolysis cyclone cooling conveying screw; 11. Primary spray tower; 12. Primary heat exchanger; 13. Primary spray pump; 14. Secondary spray tower; 15. Secondary heat exchanger; 16. Secondary spray pump; 17. Biomass gas induced draft fan; 18. Gas generator; 19. Lower heat carrier storage chamber discharge screw; 20. Solid-solid separator; 21. Solid-solid separation cyclone; 22. Solid-solid separation biochar cooling conveying screw; 23. Solid-solid separation fan; 24. Fluidized bed heat carrier feeding system; 25. Fluidized bed heater; 26. Fluidized bed raw material feeding system; 27. Air preheater; 28. Fluidized bed combustion blower. The system comprises a machine 28, a heating heat carrier conveying screw 29, a drying material fan 30, and a high-temperature heat carrier elevator 31. The drying feed system 1, tubular dryer 2, drying material cyclone 3, and furnace top material feed system 4 are connected in sequence. The self-weight mixing pyrolysis reactor 6, lower heat carrier storage chamber 7, primary pyrolysis oil-gas cyclone separator 8, secondary pyrolysis oil-gas cyclone separator 9, primary spray tower 11, and secondary spray tower 14 are connected in sequence. The biomass gas induced draft fan 17 and gas generator 18 are connected. The solid-solid separator 20, solid-solid separation cyclone 21, and solid-solid separation biochar cooling conveying screw 22 are connected in sequence. The solid-solid separator 20, fluidized bed heat carrier feed system 24, fluidized bed heater 25, heating heat carrier conveying screw 29, and high-temperature heat carrier elevator 31 are connected in sequence. The fluidized bed heater 25, air preheater 27, drying material fan 30, and tubular dryer 2 are connected in sequence.

[0083] Furthermore, the high-temperature heat carrier elevator 31 transports the heat carrier to the interior of the furnace top heat carrier conveying system 5, and then to the interior of the gravity mixing pyrolysis reactor 6 through the furnace top heat carrier conveying system 5, realizing the circulation of the heat carrier. The outlets of the primary pyrolysis oil-gas cyclone separator 8 and the secondary pyrolysis oil-gas cyclone separator 9 are connected to the pyrolysis cyclone cooling conveying screw 10. The primary spray tower 11 is connected to the primary heat exchanger 12 through the primary spray pump 13, and the secondary spray tower 14 is connected to the secondary heat exchanger 15 through the secondary spray pump 16. The lower heat carrier storage chamber 7 is connected to the solid-solid separator 20 through the lower heat carrier storage chamber discharge screw 19. The solid-solid separator 20 is connected to the fluidized bed heat carrier feeding system 24 and the fluidized bed heater 25. The fluidized bed raw material feeding system 26 is connected to the fluidized bed heater 25. The air preheater 27 is connected to the fluidized bed combustion blower 28.

[0084] The above working principle is as follows: Rice husks are used as raw material with a moisture content of 20%. The waste heat flue gas of the system is used to dry the husks to ensure that the moisture content is less than 5%. At the same time, the husks are conveyed to the furnace top material feeding system 4 via pneumatic conveying. The dried raw material (moisture content ≤ 5%) from the furnace top material feeding system 4 and the heat carrier (550℃) from the furnace top heat carrier conveying system 5 enter the gravity mixing pyrolysis reactor 6 at an 8:1 ratio to carry out sufficient mass and heat transfer, and a pyrolysis reaction occurs to obtain biochar and pyrolysis oil and gas. The internal pressure of the gravity mixing pyrolysis reactor 6 is 5 kPa.

[0085] The pyrolysis oil and gas obtained from the reaction are dusted by the primary pyrolysis oil and gas cyclone separator 8 and the secondary pyrolysis oil and gas cyclone separator 9, and then enter the primary spray tower 11 and the secondary spray tower 14 for spray cooling treatment to obtain bio-oil products for external delivery; the biomass gas is transported to the gas generator 18 for power generation operation by the biomass gas induced draft fan 17 for the power system's own use.

[0086] The biochar and heat carrier discharged from the gravity mixing pyrolysis reactor 6 are separated by the solid-solid separator 20. The biochar is cooled and then collected and sent out. The heat carrier (450℃) is transported to the fluidized bed heater 25 for heating treatment. The raw material is waste biomass resources. The heated heat carrier (550℃) is transported to the furnace top material feeding system 4 by the high temperature heat carrier elevator 31.

[0087] The flue gas discharged from the fluidized bed heater 25 is treated by heat exchange (350℃) and then transported to the tubular dryer 2 by the drying material fan 30 as a drying heat source.

[0088] For details, please refer to the following: Figure 5 and Figure 6 The interior of the gravity-mixing pyrolysis reactor 6 includes: a top chute wall 61, a heating pipe 62 for the distribution mechanism, an inner wall guide 63, a heating pipe guide wall 64 for the distribution mechanism, an outer wall 65 for the mixing throat of the pyrolysis reactor, a mixing throat 66 for the pyrolysis reactor, a bottom chute wall 67 for the pyrolysis reactor, a flue gas connection pipe 68, a flue gas outlet 69, and a flue gas inlet 610. The gravity-mixing pyrolysis reactor 6 has a square structure. The heating pipe 62 and the heating pipe guide wall 64 for the distribution mechanism are arranged inside the gravity-mixing pyrolysis reactor 6. The top chute wall 61 is provided at the feed inlet at the top of the gravity-mixing pyrolysis reactor 6. The outer wall 65 for the mixing throat of the pyrolysis reactor is provided in the middle of the gravity-mixing pyrolysis reactor 6. The bottom chute wall 67 is provided at the bottom of the gravity-mixing pyrolysis reactor 6.

[0089] In this scheme, the heating pipe 62 of the material distribution mechanism and the material guide wall 64 of the heating pipe of the material distribution mechanism are arranged in an alternating manner inside the gravity mixing pyrolysis reactor 6. The inner wall guide 63 is installed on the furnace wall of the gravity mixing pyrolysis reactor 6. The opening part of the outer wall 65 of the material guide of the mixing throat of the pyrolysis reactor constitutes the mixing throat 66 of the pyrolysis reactor. The side of the heating pipe 62 of the material distribution mechanism and the material guide wall 64 of the heating pipe of the material distribution mechanism is provided with a flue gas connecting pipe 68. The flue gas connecting pipe 68 is bent. One end of the flue gas connecting pipe 68 is provided with a flue gas outlet 69, and the other end of the flue gas connecting pipe 68 is provided with a flue gas inlet 610.

[0090] The system for preparing green fuel by biomass pyrolysis of the present invention has a staggered arrangement of the heating tube 62 of the feeding mechanism and the guide wall 64 of the heating tube of the feeding mechanism to ensure sufficient mixing between the material and the heat carrier; the top chute wall 61 of the pyrolysis reactor facilitates the initial centralized premixing of raw materials and heat carrier; the mixing throat 66 of the pyrolysis reactor facilitates multiple centralized mixing of materials; and the bottom chute wall 67 of the pyrolysis reactor facilitates the centralized discharge of pyrolysis products and heat carrier.

[0091] Furthermore, the pyrolysis reactor has n mixing throats 66, where n≥2.

[0092] Furthermore, the heating tube 62 of the material distribution mechanism and the guide wall 64 of the heating tube of the material distribution mechanism are designed to be detachable at both ends, which can be used for periodic material replacement, maintenance, etc. Example 3

[0093] Please see Figures 7-16 A solid-solid separator for biomass pyrolysis to produce green fuel, the solid-solid separator 20 includes: a solid separation device 201, a lower heat carrier storage chamber discharge screw 19 that transports heat carrier to the interior of the solid separation device 201, a solid-solid separation cyclone 21 connected to the top of the solid separation device 201, wherein a multi-stage vibration distribution structure 202 is provided inside the solid separation device 201, the multi-stage vibration distribution structure 202 is connected to the fluidized bed heat carrier feeding system 24, the multi-stage vibration distribution structure 202 includes: a solid material separation component 2021 installed inside the solid separation device 201, a solid conveying channel 2022 provided between the solid material separation component 2021 and the inner wall of the multi-stage vibration distribution structure 202, a linear vibration generating component 2023 extending into the interior is installed on one side of the top of the solid separation device 201, and the bottom of the linear vibration generating component 2023 abuts against the solid material separation component 2021.

[0094] The working principle described above is as follows: After the solid material is conveyed into the solid separation device 201, the lighter parts of the material are separated by the cyclone generated by the solid separation device 201 and enter the solid-solid separation cyclone 21. The heavier material is conveyed through the solid conveying channel 2022 to the solid material separation component 2021, where the heavier material is separated in multiple stages and then conveyed to the fluidized bed heat carrier feeding system 24. When performing multi-stage separation of solid materials, the effect of multi-stage separation can be improved by activating the linear vibration generator component 2023 to drive the solid material separation component 2021 to vibrate.

[0095] For details, please refer to the following: Figure 8 , Figure 10 and Figure 13 The solid separation device 201 includes: a conical tower body 2011, a distribution tank 2012 mounted on the bottom of the conical tower body 2011 by screws, the distribution tank 2012 being mounted on the top of a cyclone generating unit 2013, a gas pipeline 2014 penetrating through the center of the conical tower body 2011, the gas pipeline 2014 being connected to the solid-solid separation cyclone 21, and an intermediate pipeline 2015 extending into the conical tower body 2011 being connected to the top of the cyclone generating unit 2013. An inner conical screen plate 2016 is provided at the top of 5. An outer conical screen plate 2017 is provided on the outside of the top of the intermediate pipeline 2015. A solid conveying channel 2022 is formed between the intermediate pipeline 2015 and the inner wall of the distribution tank 2012. A solid material separation component 2021 located outside the intermediate pipeline 2015 is provided inside the distribution tank 2012. A linear vibration generating component 2023 extending into the interior is provided at the eccentric part of the top of the distribution tank 2012.

[0096] In the solid-solid separator for preparing green fuel by biomass pyrolysis of the present invention, when the material is separated into solid and solid components, the cyclone generating unit 2013 can be activated to generate cyclones that are transmitted to the interior of the conical tower 2011 through the intermediate pipe 2015. The material conveyed to the interior of the conical tower 2011 is blown, so that the lighter part of the material is conveyed to the interior of the solid-solid separation cyclone 21 through the gas pipe 2014, while the heavier material enters the interior of the solid conveying channel 2022.

[0097] It should be noted that the cyclone can enter the interior of the conical tower body 2011 through the through holes opened inside the outer conical screen plate 2017 and the inner conical screen plate 2016. The material is blocked by the through holes and the cyclone and cannot enter the interior of the intermediate pipe 2015.

[0098] For details, please refer to the following: Figure 11 , Figure 12 and Figure 14The solid material separation component 2021 includes a conical screening plate 20211, which is slidably connected to the outside of the intermediate pipeline 2015 and to the inside of the distribution tank 2012. The top of the conical screening plate 20211 abuts against a linear vibration generating component 2023. The conical screening plate 20211 contains three conical plates 20212, with multiple distribution holes opened inside the top two and three conical plates 20212. The feed inlet 20213 and the conical screening plate 20211 have a side discharge port 20214 on one side. The side discharge port 20214 is connected to the discharge pipe 20215 installed on the side of the distribution tank 2012. The discharge pipe 20215 is connected to the fluidized bed heat carrier feeding system 24. The return spring 20216 is connected to the bottom of the conical screening plate 20211. Multiple return springs 20216 are provided and installed at the eccentric position at the top of the cyclone generating unit 2013.

[0099] In the solid-solid separator for biomass pyrolysis to produce green fuel of the present invention, when the material enters the top of the conical screening plate 20211 through the solid conveying channel 2022, it is screened through the distribution port 20213 opened inside the conical plate 20212 inside the conical screening plate 20211, realizing multi-stage screening operation. The screened material is conveyed to the inside of the discharge pipe 20215 through the side discharge port 20214 and discharged. When the linear vibration generating component 2023 squeezes the conical screening plate 20211, it squeezes the return spring 20216 connected to the bottom of the conical screening plate 20211. Through the design of the return spring 20216, elastic vibration is performed, ensuring that the conical screening plate 20211 is always in contact with the linear vibration generating component 2023.

[0100] For details, please refer to the following: Figure 15 and Figure 16The linear vibration generating assembly 2023 includes a linear drive source 20231, which is installed on one side of the eccentric top of the cyclone generating unit 2013. The output end of the linear drive source 20231 is connected to a rotating cam 20232, which is rotatably connected to the side of a movable disk 20233, which is rotatably connected to one side of the eccentric top of the cyclone generating unit 2013. It also includes an upper protrusion 20234 and an upper protrusion 20235. 234 is installed on the outside of the movable disk 20233. A limiting protrusion 20235 is installed on the side of the upper protrusion 20234. The rotating convex disk 20232 drives the movable disk 20233 to rotate by colliding with the limiting protrusion 20235. The connecting arm 20236 is rotatably connected to the side of the upper protrusion 20234. The bottom of the connecting arm 20236 is rotatably connected to a telescopic rod 20237, which extends into the interior of the cyclone generating unit 2013.

[0101] In this design, a stop block 20238 is slidably connected to the outside of the telescopic rod 20237 and inside the cyclone generating unit 2013. A telescopic spring 20239 is connected to the top of the stop block 20238 and sleeved on the outside of the telescopic rod 20237. A rubber collision block 202311 is connected to the bottom of the telescopic rod 20237 via a vibration spring 202310. The rubber collision block 202311 is sleeved on the outside of the bottom of the telescopic rod 20237 and abuts against a conical screening plate 20211 at its bottom.

[0102] In the solid-solid separator for biomass pyrolysis to produce green fuel of the present invention, when the material is separated in multiple stages, the linear drive source 20231 is activated to drive the rotating cam 20232 connected to the output end of the linear drive source 20231 to rotate. When the rotating cam 20232 abuts against the limiting protrusion 20235, it will drive the movable disk 20233 and the upper protrusion 20234 connected to the limiting protrusion 20235 to rotate, which will drive the connecting arm 20236 rotatably connected to the side of the upper protrusion 20234 to operate, and drive the telescopic rod 20237 rotatably connected to the connecting arm 20236 to move up and down. The rubber collision block 202311 installed at the bottom of the telescopic rod 20237 elastically squeezes the conical screening plate 20211.

[0103] It should be noted that the rotation of the movable disc 20233 is an energy storage and release mechanism. As the upper protrusion 20234 installed on the outer side of the movable disc 20233 moves to the top vertical position, the telescopic rod 20237 moves upward, continuously compressing the telescopic spring 20239. When the movable disc 20233 moves out from the top vertical position, it releases the stored elastic force all at once, ensuring that the conical screening plate 20211 can undergo elastic vibration.

[0104] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

[0105] The terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention.

[0106] Therefore, any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this invention, based on the technical solution and inventive concept of this invention, should be covered within the protection scope of this invention.

Claims

1. A method for preparing green fuel by biomass pyrolysis, characterized in that, Includes the following steps: S1. The biomass raw materials are dried to reduce the moisture content to below 5%. The drying heat source comes from the waste heat flue gas generated in the system. S2. The dried raw materials and heat carrier are fed into the self-weight mixing pyrolysis reactor (6) in equal proportion. The raw materials and heat carrier are fully mixed and heat transferred in the self-weight mixing pyrolysis reactor (6) to generate pyrolysis oil and gas and biochar. S3. After a large amount of particulate matter is filtered out by the first-stage pyrolysis oil gas cyclone separator (8) and the second-stage pyrolysis oil gas cyclone separator (9), the pyrolysis oil gas enters the first-stage spray tower (11) and the second-stage spray tower (14) for spraying and cooling to obtain biomass gas and bio-oil. The bio-oil is sent out for storage as a product, and the biomass gas is transported into the gas generator (18) by the biomass gas induced draft fan (17) for power generation and is used by the power system itself. S4. Biochar and solid heat carrier from the pyrolysis system enter the solid-solid separator (20) for effective separation to obtain biochar and solid heat carrier. The biochar is cooled and sold as a product. S5. The separated heat carrier enters the fluidized bed heating furnace (25) for heating treatment. The heat source is biomass raw material. After heating, the heat carrier is discharged from the fluidized bed heating furnace (25) and then lifted to the heat carrier storage silo by the high temperature heat carrier elevator (31). S6. The flue gas generated by the fluidized bed heating furnace (25) is treated by dust removal and then the waste heat is recovered by the air preheater (27). The waste heat flue gas is then transported to the tubular dryer (2) as a heat source for drying raw materials.

2. A system for preparing green fuel by biomass pyrolysis, used in accordance with the method for preparing green fuel by biomass pyrolysis according to claim 1, characterized in that, The system for preparing green fuel from biomass pyrolysis includes: a drying and feeding system (1), a tubular dryer (2), a drying material cyclone (3), a furnace top material feeding system (4), a furnace top heat carrier conveying system (5), a gravity mixing pyrolysis reactor (6), a lower heat carrier storage chamber (7), a primary pyrolysis oil-gas cyclone separator (8), a secondary pyrolysis oil-gas cyclone separator (9), a pyrolysis cyclone cooling conveying spiral (10), a primary spray tower (11), a primary heat exchanger (12), a primary spray pump (13), a secondary spray tower (14), a secondary heat exchanger (15), and a secondary spray system. Pump (16), biomass gas induced draft fan (17), gas generator (18), lower heat carrier storage chamber discharge screw (19), solid-solid separator (20), solid-solid separation cyclone (21), solid-solid separation biochar cooling conveying screw (22), solid-solid separation fan (23), fluidized bed heat carrier feeding system (24), fluidized bed heater (25), fluidized bed raw material feeding system (26), air preheater (27), fluidized bed combustion blower (28), heating heat carrier conveying screw (29), drying material fan (30), and high temperature heat carrier elevator (31). Among them, the drying feed system (1), tubular dryer (2), drying material cyclone (3) and furnace top material feed system (4) are connected in sequence. The self-weight mixing pyrolysis reactor (6), lower heat carrier storage chamber (7), primary pyrolysis oil-gas cyclone separator (8), secondary pyrolysis oil-gas cyclone separator (9), primary spray tower (11) and secondary spray tower (14) are connected in sequence. The biomass gas induced draft fan (17) and gas generator (18) are connected in sequence. The solid-solid separator (20), solid-solid separation cyclone (21) and solid-solid separation biochar cooling conveying screw (22) are connected in sequence. The solid-solid separator (20), fluidized bed heat carrier feed system (24), fluidized bed heater (25), heating heat carrier conveying screw (29) and high temperature heat carrier elevator (31) are connected in sequence. The fluidized bed heater (25), air preheater (27), drying material fan (30) and tubular dryer (2) are connected in sequence.

3. The system for preparing green fuel by biomass pyrolysis according to claim 2, characterized in that: The high-temperature heat carrier elevator (31) transports the heat carrier to the interior of the furnace top heat carrier conveying system (5), and then through the furnace top heat carrier conveying system (5) to the interior of the gravity mixing pyrolysis reactor (6), thereby realizing the circulation of the heat carrier. The outlets of the primary pyrolysis oil-gas cyclone separator (8) and the secondary pyrolysis oil-gas cyclone separator (9) are connected to a pyrolysis cyclone cooling conveying spiral (10). The primary spray tower (11) is connected to the primary heat exchanger (12) via a primary spray pump (13), and the secondary spray tower (14) is connected to the secondary heat exchanger (15) via a secondary spray pump (16). The lower heat carrier storage chamber (7) is connected to the solid-solid separator (20) via the lower heat carrier storage chamber discharge screw (19). The solid-solid separator (20) is connected to the fluidized bed heater (25) via the fluidized bed heat carrier feeding system (24). The fluidized bed raw material feeding system (26) is connected to the fluidized bed heater (25). The air preheater (27) and the fluidized bed combustion blower (28) are connected.

4. The system for preparing green fuel by biomass pyrolysis according to claim 3, characterized in that: The interior of the self-weight mixing pyrolysis reactor (6) includes: a top chute wall (61) of the pyrolysis reactor, a heating pipe (62) of the distribution mechanism, an inner wall guide (63), a guide wall (64) of the heating pipe of the distribution mechanism, an outer wall (65) of the mixing throat of the pyrolysis reactor, a mixing throat (66) of the pyrolysis reactor, a bottom chute wall (67) of the pyrolysis reactor, a flue gas connection pipe (68), a flue gas outlet (69) and a flue gas inlet (610). The self-weight mixing pyrolysis reactor (6) has a square structure. The interior of the self-weight mixing pyrolysis reactor (6) is equipped with a material distribution mechanism heating pipe (62) and a material distribution mechanism heating pipe guide wall (64). The upper inlet of the self-weight mixing pyrolysis reactor (6) is provided with a top chute wall (61) of the pyrolysis reactor. The middle part of the self-weight mixing pyrolysis reactor (6) is provided with a mixing throat guide wall (65) of the pyrolysis reactor. The bottom of the self-weight mixing pyrolysis reactor (6) is provided with a bottom chute wall (67) of the pyrolysis reactor.

5. The system for preparing green fuel by biomass pyrolysis according to claim 4, characterized in that: The heating tube (62) of the material distribution mechanism and the material guide wall (64) of the heating tube of the material distribution mechanism are arranged in an alternating manner inside the self-weight mixing pyrolysis reactor (6), and an inner wall guide (63) is provided on the furnace wall of the self-weight mixing pyrolysis reactor (6). The opening portion of the outer wall (65) of the mixing throat of the pyrolysis reactor constitutes the mixing throat (66) of the pyrolysis reactor. The side of the heating pipe (62) of the distributing mechanism and the material guide wall (64) of the heating pipe of the distributing mechanism are provided with flue gas connecting pipes (68). The flue gas connecting pipes (68) are bent. One end of the flue gas connecting pipes (68) is provided with a flue gas outlet (69), and the other end of the flue gas connecting pipes (68) is provided with a flue gas inlet (610).

6. A solid-solid separator for biomass pyrolysis to produce green fuel, used in a system for biomass pyrolysis to produce green fuel according to any one of claims 2-5, characterized in that, The solid-solid separator (20) includes a solid separation device (201), wherein the lower heat carrier storage chamber discharge screw (19) transports the heat carrier to the interior of the solid separation device (201), and the top of the solid separation device (201) is connected to a solid-solid separation cyclone (21). The solid separation device (201) is internally equipped with a multi-stage vibrating material distribution structure (202), which is connected to the fluidized bed heat carrier feeding system (24). The multi-stage vibration distribution structure (202) includes: a solid material separation component (2021) installed inside the solid separation device (201), a solid conveying channel (2022) provided between the solid material separation component (2021) and the inner wall of the multi-stage vibration distribution structure (202), and a linear vibration generating component (2023) extending into the interior is installed on one side of the top of the solid separation device (201), with the bottom of the linear vibration generating component (2023) abutting against the solid material separation component (2021).

7. A solid-solid separator for biomass pyrolysis to produce green fuel according to claim 6, characterized in that: The solid separation device (201) includes: a conical tower body (2011), a dispensing tank (2012) being screwed to the bottom of the conical tower body (2011), the dispensing tank (2012) being installed at the top of the cyclone generating unit (2013), and a gas pipeline (2014) being installed through the center of the conical tower body (2011), the gas pipeline (2014) being connected to the solid-solid separation cyclone (21). The top of the cyclone generating unit (2013) is connected to an intermediate pipe (2015) extending into the conical tower body (2011). An inner conical sieve plate (2016) is provided at the top of the intermediate pipe (2015), and an outer conical sieve plate (2017) installed on the outer side of the top of the intermediate pipe (2015) is provided on the outer side of the inner conical sieve plate (2016). A solid conveying channel (2022) is formed between the intermediate pipe (2015) and the inner wall of the material distribution tank (2012). The material distribution tank (2012) is equipped with a solid material separation component (2021) located outside the intermediate pipeline (2015) inside, and a linear vibration generating component (2023) extending into the interior is provided at the eccentric part of the top of the material distribution tank (2012).

8. A solid-solid separator for preparing green fuel from biomass pyrolysis according to claim 7, characterized in that: The solid material separation assembly (2021) includes: A conical screening plate (20211) is slidably connected to the outside of the intermediate pipeline (2015) and slidably connected to the inside of the material distribution tank (2012). The top of the conical screening plate (20211) abuts against a linear vibration generating component (2023). The conical screening plate (20211) has three conical plates (20212) inside. The two top conical plates (20212) have multiple material distribution ports (20213) inside. A side discharge port (20214) is provided on one side of the conical screening plate (20211). The side discharge port (20214) is connected to the discharge pipe (20215) installed on the side of the material distribution tank (2012). The discharge pipe (20215) is connected to the fluidized bed heat carrier feeding system (24). A reset spring (20216) is connected to the bottom of the conical screening plate (20211). Multiple reset springs (20216) are provided and installed at the eccentric position on the top of the cyclone generating unit (2013).

9. A solid-solid separator for biomass pyrolysis to produce green fuel according to claim 8, characterized in that: The linear vibration generating assembly (2023) includes: A linear drive source (20231) is installed on one side of the eccentric top of the cyclone generator unit (2013). The output end of the linear drive source (20231) is connected to a rotating cam (20232), and the rotating cam (20232) is rotatably connected to the side of a movable disk (20233). The movable disk (20233) is rotatably connected to one side of the eccentric top of the cyclone generating unit (2013); An upper protrusion (20234) is installed on the outside of the movable disk (20233). A limiting protrusion (20235) is installed on the side of the upper protrusion (20234). The rotating convex disk (20232) drives the movable disk (20233) to rotate by colliding with the limiting protrusion (20235). A connecting arm (20236) is rotatably connected to the side of the upper protrusion (20234), and a telescopic rod (20237) is rotatably connected to the bottom of the connecting arm (20236), the telescopic rod (20237) extending into the interior of the cyclone generating unit (2013).

10. A solid-solid separator for preparing green fuel from biomass pyrolysis according to claim 9, characterized in that: The telescopic rod (20237) is equipped with a stop block (20238) that is slidably connected inside the cyclone generating unit (2013) on the outside. The top of the stop block (20238) is connected to a telescopic spring (20239) that is sleeved on the outside of the telescopic rod (20237). The bottom of the telescopic rod (20237) is connected to a rubber collision block (202311) via a vibration spring (202310). The rubber collision block (202311) is sleeved on the outside of the bottom of the telescopic rod (20237) and its bottom abuts against the conical screening plate (20211).

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