Biomass solid particle pyrolysis reactor

Abstract

The invention belongs to the technical field of biomass pyrolysis, and particularly discloses a biomass solid particle pyrolysis reactor which comprises a reaction tank, a material conveying device is arranged in the reaction tank, and the material conveying device comprises an inner pipe, an outer pipe, a guide cover, a spiral protrusion, an auger blade, a driving assembly and a heating assembly. Compared with the single pyrolysis operation of the existing ablation vortex reactor, the pyrolysis time of the biomass raw material is prolonged, so that the heating coil only needs half of the power of a heating pipe in the existing ablation vortex reactor, the energy consumption is greatly saved, and the energy consumption is greatly reduced due to the fact that the power of the heating coil is reduced. Therefore, the phenomenon that some small-particle biomass raw materials are excessively pyrolyzed due to overhigh pyrolysis temperature and large-particle biomass raw materials are externally coked and internally generated can be avoided, and the pyrolysis effect of the whole biomass raw materials is improved.

Description

Technical Field

[0001] This invention belongs to the field of biomass pyrolysis technology, and particularly relates to a biomass solid particle pyrolysis reactor. Background Technology

[0002] Biomass solid particle pyrolysis reactors are key equipment for converting biomass solid particles into combustible gases, liquids, and solid products under high-temperature, anaerobic, or oxygen-deficient conditions. The main types of biomass solid particle pyrolysis reactors include fluidized bed reactors, rotating cone reactors, auger reactors, and ablation vortex reactors. Among these, the ablation vortex reactor, when pyrolyzing biomass feedstock, simply feeds the biomass feedstock into the reaction vessel under high-speed rotation of a conveyor. Then, under the action of high-speed centrifugal force, the biomass feedstock slides along a spiral path on the wall of the vortex reactor and undergoes pyrolysis. Furthermore, because the ablation vortex reactor can handle larger biomass feedstock particles, and its reaction rate is only related to pressure, reactor surface temperature, and the relative velocity of the biomass on the heat exchange surface, the ablation vortex reactor has wide applications in the field of biomass solid particle processing.

[0003] However, in actual use, due to the simple internal structure of the ablation vortex reactor and the limited heating time of the biomass feedstock as it moves along the inner wall, the biomass feedstock may not be fully pyrolyzed. In order to ensure pyrolysis efficiency, the heating tubes on the inner wall of the ablation vortex reactor generally have high power. This may cause small biomass feedstock particles to be over-pyrolyzed, while larger biomass feedstock particles will exhibit the phenomenon of "external charring and internal growth". In addition, high-power heating tubes will also increase the reactor's energy consumption, which is not conducive to energy conservation and environmental protection.

[0004] Therefore, it is necessary to invent a biomass solid particle pyrolysis reactor to solve the above problems. Summary of the Invention

[0005] To address the aforementioned problems, this invention provides a biomass solid particle pyrolysis reactor to solve the issues raised in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a biomass solid particle pyrolysis reactor, comprising a reaction tank, wherein a material conveying device is provided inside the reaction tank, the material conveying device comprising an inner tube, an outer tube, a guide cover, a spiral protrusion, auger blades, a drive assembly, and a heating assembly; The inner tube is vertically positioned at the axis of the reaction vessel, and the outer tube is positioned outside the inner tube, both coaxial with the reaction vessel. Both the inner and outer tubes have open tops, with the inner tube having a screen-like sidewall. The outer tube has a sealed bottom, with a conical bulge at the center of its inner bottom wall. Multiple first connecting rods are fixedly connected between the bottom of the outer tube and the inner bottom wall of the reaction vessel. A guide cover is rotatably mounted on the top of the inner tube, with its top edge fixedly connected to the inner wall of the reaction vessel. Spiral protrusions are uniformly fixedly connected to the inner wall of the inner tube, and auger blades are uniformly fixedly connected to the outer wall of the inner tube. The rotation direction of the auger blades is opposite to that of the spiral protrusions. A drive assembly is connected to the axis of the inner tube to drive its rotation. A heating assembly is connected to the outer wall of the outer tube to heat the material.

[0007] Furthermore, the biomass solid particle pyrolysis reactor also includes a top cover, which is detachably connected to the top of the reaction vessel, and a steam exhaust pipe is connected to the top of the top cover.

[0008] Furthermore, the biomass solid particle pyrolysis reactor also includes a cooling pipe, which is fixedly sleeved on the side wall of the reaction tank near the bottom. The side of the cooling pipe is connected to an inlet pipe and an outlet pipe, and the inlet pipe and outlet pipe are close to the bottom and top of the cooling pipe, respectively.

[0009] Furthermore, a feed pipe is connected to the side of the reaction vessel near the top, and the end of the feed pipe away from the reaction vessel is inclined upward. The end of the feed pipe connected to the reaction vessel is located at the top of the guide cover, and the end of the feed pipe connected to the reaction vessel is aligned with the inner wall of the guide cover. A discharge pipe is connected to the bottom of the reaction vessel, and a control valve is installed on the discharge pipe.

[0010] Furthermore, the drive assembly includes a drive shaft, a motor, and a second connecting rod. The drive shaft is vertically rotatably inserted into the center of the top cover, and the bottom end of the drive shaft is rotatably inserted into the bottom center of the outer tube. The motor is driven and connected to the top end of the drive shaft. There are multiple second connecting rods, which are evenly and fixedly connected between the surface of the drive shaft and the inner wall of the inner tube.

[0011] Furthermore, a dispersion device is provided inside the guide cover. The dispersion device includes a fixed sleeve and a grid plate. The fixed sleeve is detachably sleeved on the drive shaft. There are multiple grid plates, which are evenly and vertically distributed in a ring around the fixed sleeve. The grid plates are fixedly connected to the fixed sleeve.

[0012] Furthermore, the bottom inner wall of the reaction vessel gradually slopes downward from the edge to the center, and the discharge pipe is connected to the lowest point of the bottom of the reaction vessel. Multiple third connecting rods are evenly fixedly connected to the side of the drive shaft near the bottom end. A scraper is fixedly connected to the end of the third connecting rod away from the drive shaft, and the scraper is kept in contact with the bottom inner wall of the reaction vessel.

[0013] Furthermore, the heating assembly includes a heating coil and an isolation cover. The heating coil is evenly wound around the outer wall of the outer tube, and the isolation cover is fixedly sleeved on the side of the outer tube. The heating coil is located in the inner area of ​​the isolation cover, and the top diameter of the isolation cover gradually increases from top to bottom.

[0014] Furthermore, the fixed sleeve has multiple deflection rods evenly hinged to its top side, and the free end of each deflection rod is rotatably connected to a striking ball. The inner wall of the guide cover near the top has an annular protrusion coaxial with it. The inner side of the annular protrusion is inclined downward, and in the initial state, the striking ball is in contact with the top of the annular protrusion. Several spherical protrusions are evenly fixed to the top of the annular protrusion, and the spherical protrusions can contact the striking ball. The top of the fixed sleeve is fixedly connected to a limiting plate, and when the deflection rod contacts the limiting plate, the striking ball can remain separated from the annular protrusion and the spherical protrusions.

[0015] Furthermore, a filter screen is horizontally arranged on the top of the guide cover. The filter screen is fixedly connected to the inner wall of the reaction tank and is rotatably sleeved on the drive shaft. An exhaust fan is arranged on the top of the filter screen and is fixedly connected to the drive shaft.

[0016] The technical effects and advantages of this invention are as follows: 1. Compared with the single pyrolysis operation of the existing ablation vortex reactor, the present invention extends the pyrolysis time of biomass raw materials. Therefore, the heating coil in the present invention only requires half the power of the heating tube inside the existing ablation vortex reactor, thereby greatly saving energy consumption. Furthermore, since the power of the heating coil is reduced, it can also avoid the phenomenon of over-pyrolysis of some smaller biomass raw materials due to excessively high pyrolysis temperature, and the phenomenon of "external charring and internal growth" of larger biomass raw materials, thus improving the overall pyrolysis effect of biomass raw materials. 2. The present invention is equipped with a dispersing device. During the rotation of the drive shaft, the grid plate can make a circular motion in the guide cover under the drive of the fixed sleeve. During this process, when the agglomerated biomass raw material comes into contact with the grid plate, the grid plate can disperse the agglomerated biomass raw material, thereby ensuring the pyrolysis effect of the subsequent biomass raw material. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2This is a cross-sectional view of the overall structure of the present invention; Figure 3 In this invention Figure 2 Enlarged view of part A; Figure 4 In this invention Figure 2 Enlarged view of part B; Figure 5 This is a three-dimensional schematic diagram of the guide cover and its inner structure in this invention; Figure 6 This is a three-dimensional schematic diagram of the inner structure of the guide cover in this invention.

[0018] In the diagram: 1. Reaction vessel; 2. Inner pipe; 3. Outer pipe; 4. Guide cover; 5. Spiral protrusion; 6. Screw blade; 7. First connecting rod; 8. Top cover; 9. Exhaust pipe; 10. Cooling pipe; 11. Water inlet pipe; 12. Water outlet pipe; 13. Feed pipe; 14. Discharge pipe; 15. Control valve; 16. Drive shaft; 17. Motor; 18. Second connecting rod; 19. Fixing sleeve; 20. Grid plate; 21. Third connecting rod; 22. Scraper; 23. Heating coil; 24. Isolation cover; 25. Deflection rod; 26. Striking ball; 27. Annular protrusion; 28. Spherical protrusion; 29. ​​Limiting plate; 30. Filter screen; 31. Exhaust fan. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0020] This invention provides, for example Figures 1 to 6 The biomass solid particle pyrolysis reactor shown includes a reaction tank 1, and a material conveying device is provided inside the reaction tank 1. The material conveying device includes an inner pipe 2, an outer pipe 3, a guide cover 4, a spiral protrusion 5, an auger blade 6, a drive assembly, and a heating assembly. The inner tube 2 is vertically positioned at the axis of the reaction vessel 1, and the outer tube 3 is positioned outside the inner tube 2. Both the inner tube 2 and the outer tube 3 are coaxial with the reaction vessel 1. The tops of both the inner tube 2 and the outer tube 3 are open, and the sidewall of the inner tube 2 has a screen structure. The bottom of the outer tube 3 is sealed, and the center of the inner wall of the bottom of the outer tube 3 is conical and protrudes upwards. Multiple first connecting rods 7 are fixedly connected between the bottom of the outer tube 3 and the inner wall of the bottom of the reaction vessel 1. A guide cover 4 is rotatably mounted on the top of the inner tube 2, and the top edge of the guide cover 4 is fixedly connected to the inner wall of the reaction vessel 1. Spiral protrusions 5 are evenly fixedly connected to the inner wall of the inner tube 2, and auger blades 6 are evenly fixedly connected to the outer wall of the inner tube 2. The rotation direction of the auger blades 6 is opposite to the rotation direction of the spiral protrusions 5, and the top of the auger blades 6 is higher than the top of the outer tube 3. The bottom of the auger blades 6 is in contact with the inner wall of the bottom of the outer tube 3, and the width of the auger blades 6 is equal to the width of the outer wall of the inner tube 2. The distance between the side and the inner wall of the outer tube 3 is matched. The drive assembly is connected to the axis of the inner tube 2 to drive the inner tube 2 to rotate. The heating assembly is connected to the outer wall of the outer tube 3 to heat the material. The drive assembly includes a drive shaft 16, a motor 17 and a second connecting rod 18. The drive shaft 16 is vertically rotated and inserted through the axis of the top cover 8, and the bottom end of the drive shaft 16 is rotated and inserted through the bottom center of the outer tube 3. The motor 17 is driven and connected to the top end of the drive shaft 16. There are multiple second connecting rods 18. Multiple second connecting rods 18 are evenly fixedly connected between the surface of the drive shaft 16 and the inner wall of the inner tube 2. The heating assembly includes a heating coil 23 and an isolation cover 24. The heating coil 23 is evenly wound around the outer wall of the outer tube 3. The isolation cover 24 is fixedly sleeved on the side of the outer tube 3, and the heating coil 23 is located in the inner area of ​​the isolation cover 24. The top diameter of the isolation cover 24 gradually increases from top to bottom. The biomass solid pellet pyrolysis reactor also includes a top cover 8, which is detachably connected to the top of the reaction vessel 1, and a steam exhaust pipe 9 is connected to the top of the top cover 8. The biomass solid particle pyrolysis reactor also includes a cooling pipe 10, which is fixedly sleeved on the side wall of the reaction tank 1 near the bottom. The side of the cooling pipe 10 is connected to an inlet pipe 11 and an outlet pipe 12, and the inlet pipe 11 and the outlet pipe 12 are close to the bottom and top of the cooling pipe 10, respectively. A feed pipe 13 is connected to the side of the reaction vessel 1 near the top, and the end of the feed pipe 13 away from the reaction vessel 1 is inclined upward. The end of the feed pipe 13 connected to the reaction vessel 1 is located at the top of the guide cover 4, and the end of the feed pipe 13 connected to the reaction vessel 1 is directly opposite to the inner wall of the guide cover 4. A discharge pipe 14 is connected to the bottom of the reaction vessel 1, and a control valve 15 is installed on the discharge pipe 14. Before pyrolyzing the biomass raw materials, the motor 17 is started, which drives the inner tube 2 to rotate through the drive shaft 16. At the same time, cooling water is injected into the cooling tube 10 through the water inlet pipe 11. When the cooling tube 10 is full, the excess cooling water can flow out through the water outlet pipe 12, thereby ensuring that the cooling water in the cooling tube 10 is always flowing. Once the inner tube 2 reaches a stable rotation speed, the biomass feedstock is conveyed to the reaction tank 1 through the feed pipe 13 under the high-speed rotation of the conveyor. After entering the reaction tank 1, the biomass feedstock is guided by the guide shroud 4 into the rotating inner tube 2. Subsequently, under the action of the spiral protrusion 5, the biomass feedstock moves downwards at a uniform speed along the inner wall of the inner tube 2. During this process, the heat generated by the heating coil 23 provides initial heating to the biomass feedstock, and the high-temperature steam generated during heating is discharged from the reaction tank 1 through the exhaust pipe 9. As the biomass feedstock continues to move downwards, when it exits from the bottom of the inner tube 2, it falls onto the conical protrusion on the inner wall of the bottom of the outer tube 3 and slides down to the bottom of the auger blade 6. Then, with the rotation of the inner tube 2… Driven by the inner tube 2, the auger blades 6, in conjunction with the inner wall of the outer tube 3, transport the pre-heated biomass feedstock that has fallen onto the bottom inner wall of the outer tube 3 upwards. During the upward movement of the biomass feedstock, the heating coil 23 can perform a secondary pyrolysis operation on the biomass feedstock. Compared with the single pyrolysis operation of the existing ablation vortex reactor, this extends the pyrolysis time of the biomass feedstock. Therefore, during the pyrolysis process, the heating coil 23 only requires half the power of the heating tube inside the existing ablation vortex reactor, thus greatly saving energy consumption. Furthermore, since the power of the heating coil 23 is reduced, it can also prevent some smaller biomass feedstock from being over-pyrolyzed due to excessively high pyrolysis temperature, and prevent larger biomass feedstock from exhibiting the phenomenon of "external charring and internal growth", thereby improving the overall pyrolysis effect of the biomass feedstock. Subsequently, as the biomass feedstock continues to move upward, when the biomass feedstock moves to the outside of the outer tube 3 through the top of the outer tube 3 under the action of the screw conveyor blade 6, the biomass feedstock can fall downward into the bottom inner wall of the reaction tank 1 under the action of gravity. During this process, when the biomass feedstock comes into contact with the outer wall of the reaction tube, the cooling water in the cooling pipe 10 can cool down the pyrolyzed biomass feedstock. Due to the presence of the isolation cover 24, the isolation cover 24 can isolate the heating coil 23, preventing the biomass feedstock from being reheated by the heating coil 23 during the cooling process. When the cooled biomass feedstock falls onto the inner wall of the bottom of the reaction tank 1, the control valve 15 can be opened to allow the finished biomass feedstock to be released from the discharge pipe 14 and collected.

[0021] like Figures 2 to 6As shown, a dispersing device is provided inside the guide cover 4. The dispersing device includes a fixed sleeve 19 and a grid plate 20. The fixed sleeve 19 is detachably sleeved on the drive shaft 16. There are multiple grid plates 20. The grid plates 20 are evenly and vertically distributed in a ring around the fixed sleeve 19. The grid plates 20 are fixedly connected to the fixed sleeve 19. When biomass feedstock is fed into reaction vessel 1 through feed pipe 13, the biomass feedstock may have high moisture content, which may cause some of the biomass feedstock to clump together, thus affecting the pyrolysis effect. At this time, by setting up a dispersing device, during the rotation of drive shaft 16, grid plate 20 can make circumferential motion in guide cover 4 under the drive of fixed sleeve 19. During this process, when the clumped biomass feedstock comes into contact with grid plate 20, grid plate 20 can disperse the clumped biomass feedstock, thereby ensuring the subsequent pyrolysis effect of biomass feedstock.

[0022] like Figures 2 to 4 As shown, the bottom inner wall of the reaction vessel 1 gradually slopes downward from the edge to the center, and the discharge pipe 14 is connected to the lowest point of the bottom of the reaction vessel 1. Multiple third connecting rods 21 are evenly fixedly connected to the side of the drive shaft 16 near the bottom. A scraper 22 is fixedly connected to the end of the third connecting rod 21 away from the drive shaft 16, and the scraper 22 is in contact with the bottom inner wall of the reaction vessel 1. With the scraper 22 installed, during the rotation of the drive shaft 16, the drive shaft 16 can drive the scraper 22 to scrape against the bottom inner wall of the reaction tank 1 through the third connecting rod 21, thereby quickly scraping the pyrolyzed biomass raw material that has fallen onto the bottom inner wall of the reaction tank 1 towards the discharge pipe 14, thereby increasing the speed at which the pyrolyzed biomass raw material is discharged from the reaction tank 1.

[0023] like Figure 5 and Figure 6 As shown, a plurality of deflection rods 25 are evenly hinged to the side of the fixed sleeve 19 near the top end. The free end of the deflection rod 25 is rotatably connected to a striking ball 26. An annular protrusion 27 coaxial with the guide cover 4 is fixedly connected to the inner wall near the top end. The inner side of the annular protrusion 27 is inclined downward. In the initial state, the striking ball 26 is in contact with the top of the annular protrusion 27. A plurality of spherical protrusions 28 are evenly fixedly connected to the top of the annular protrusion 27. The spherical protrusions 28 can contact the striking ball 26. The top end of the fixed sleeve 19 is fixedly connected to a limiting plate 29. When the deflection rod 25 contacts the limiting plate 29, the striking ball 26 can remain separated from the annular protrusion 27 and the spherical protrusions 28. By incorporating the striking ball 26, during the processing of biomass raw materials in the reaction tank 1, when the drive shaft 16 drives the deflector rod 25 to rotate via the fixed sleeve 19, as the rotational speed of the drive shaft 16 increases, the striking ball 26 can drive the deflector rod 25 to deflect upward under the action of centrifugal force. This allows the striking ball 26 to remain separated from the spherical protrusion 28 on the annular protrusion 27, thus ensuring that the striking ball 26 will not collide with the spherical protrusion 28 during normal pyrolysis. As the pyrolysis process ends and the drive shaft 16 gradually stops, the centrifugal force experienced by the striking ball 26... As the pressure gradually decreases, the striking ball 26 can deflect downwards under the influence of gravity and roll along the top of the annular protrusion 27. When the striking ball 26 collides with the spherical protrusion 28 on the top of the annular protrusion 27, the striking ball 26 can generate vibration by colliding with the spherical protrusion 28. As the vibration is transmitted to the guide cover 4 and the grid plate 20 through the annular protrusion 27, the deflection rod 25, and the fixing sleeve 19 respectively, the vibration can shake off the biomass raw materials remaining on the guide cover 4 and the grid plate 20, causing them to fall into the inner tube 2, thereby preventing the biomass raw materials from remaining on the grid plate 20 and the guide cover 4.

[0024] like Figure 2 As shown, a filter screen 30 is horizontally arranged on the top of the guide cover 4. The filter screen 30 is fixedly connected to the inner wall of the reaction tank 1, and the filter screen 30 is rotatably sleeved on the drive shaft 16. An exhaust fan 31 is arranged on the top of the filter screen 30 and is fixedly connected to the drive shaft 16. With the exhaust fan installed, the exhaust fan 31 can rotate under the drive of the drive shaft 16 during the rotation of the drive shaft 16, thereby quickly expelling the high-temperature steam generated during the pyrolysis of biomass raw materials upward through the exhaust pipe 9 and out of the reaction tank 1. With the filter screen 30 installed, the filter screen 30 can intercept the biomass raw materials entering the reaction tank 1 from the feed pipe 13, preventing the biomass raw materials from entering the exhaust pipe 9 under the action of the exhaust fan 31.

[0025] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A biomass solid particle pyrolysis reactor, comprising a reaction vessel (1), characterized in that: The reaction vessel (1) is equipped with a material conveying device, which includes an inner tube (2), an outer tube (3), a guide cover (4), a spiral protrusion (5), an auger blade (6), a drive assembly, and a heating assembly. The inner tube (2) is vertically positioned at the axis of the reaction vessel (1), and the outer tube (3) is positioned outside the inner tube (2). Both the outer tube (3) and the inner tube (2) are coaxial with the reaction vessel (1). The tops of both the inner tube (2) and the outer tube (3) are open, and the sidewall of the inner tube (2) is a screen structure. The bottom of the outer tube (3) is sealed, and the center of the inner wall of the bottom of the outer tube (3) is conical and protrudes upward. Multiple first connecting rods (7) are fixedly connected between the bottom of the tube (3) and the inner wall of the bottom of the reaction vessel (1). The guide cover (4) is rotatably installed on the top of the inner tube (2), and the top edge of the guide cover (4) is fixedly connected to the inner wall of the reaction vessel (1). The spiral protrusion (5) is uniformly fixedly connected to the inner wall of the inner tube (2). The auger blade (6) is uniformly fixedly connected to the outer wall of the inner tube (2), and the rotation direction of the auger blade (6) is opposite to the rotation direction of the spiral protrusion (5). The driving assembly is connected to the axis of the inner tube (2) to drive the inner tube (2) to rotate. The heating assembly is connected to the outer wall of the outer tube (3) to heat the material.

2. The biomass solid particle pyrolysis reactor according to claim 1, characterized in that: The biomass solid particle pyrolysis reactor also includes a top cover (8), which is detachably connected to the top of the reaction vessel (1), and the top of the top cover (8) is connected to an exhaust pipe (9).

3. The biomass solid particle pyrolysis reactor according to claim 2, characterized in that: The biomass solid particle pyrolysis reactor also includes a cooling pipe (10), which is fixedly sleeved on the side wall of the reaction tank (1) near the bottom. The side of the cooling pipe (10) is connected to an inlet pipe (11) and an outlet pipe (12), and the inlet pipe (11) and the outlet pipe (12) are close to the bottom and top of the cooling pipe (10), respectively.

4. The biomass solid particle pyrolysis reactor according to claim 3, characterized in that: The reaction vessel (1) is connected to a feed pipe (13) on the side near the top, and the end of the feed pipe (13) away from the reaction vessel (1) is inclined upward. The end of the feed pipe (13) connected to the reaction vessel (1) is located at the top of the guide cover (4), and the end of the feed pipe (13) connected to the reaction vessel (1) is directly opposite to the inner wall of the guide cover (4). The bottom of the reaction vessel (1) is connected to a discharge pipe (14), and a control valve (15) is installed on the discharge pipe (14).

5. The biomass solid particle pyrolysis reactor according to claim 4, characterized in that: The drive assembly includes a drive shaft (16), a motor (17), and a second connecting rod (18). The drive shaft (16) is vertically rotatably inserted into the center of the top cover (8), and the bottom end of the drive shaft (16) is rotatably inserted into the bottom center of the outer tube (3). The motor (17) is driven and connected to the top end of the drive shaft (16). There are multiple second connecting rods (18), and multiple second connecting rods (18) are evenly fixed between the surface of the drive shaft (16) and the inner wall of the inner tube (2).

6. The biomass solid particle pyrolysis reactor according to claim 5, characterized in that: The guide cover (4) is provided with a dispersion device, which includes a fixed sleeve (19) and a grid plate (20). The fixed sleeve (19) is detachably sleeved on the drive shaft (16). There are multiple grid plates (20). The grid plates (20) are evenly and vertically distributed around the fixed sleeve (19). The grid plates (20) are fixedly connected to the fixed sleeve (19).

7. The biomass solid particle pyrolysis reactor according to claim 6, characterized in that: The bottom inner wall of the reaction vessel (1) gradually slopes downward from the edge to the center, and the discharge pipe (14) is connected to the lowest point of the bottom of the reaction vessel (1). Multiple third connecting rods (21) are evenly fixedly connected to the side of the drive shaft (16) near the bottom. A scraper (22) is fixedly connected to the end of the third connecting rod (21) away from the drive shaft (16), and the scraper (22) is in close contact with the bottom inner wall of the reaction vessel (1).

8. The biomass solid particle pyrolysis reactor according to claim 7, characterized in that: The heating assembly includes a heating coil (23) and an isolation cover (24). The heating coil (23) is evenly wound around the outer wall of the outer tube (3). The isolation cover (24) is fixedly sleeved on the side of the outer tube (3), and the heating coil (23) is located in the inner area of ​​the isolation cover (24). The top diameter of the isolation cover (24) gradually increases from top to bottom.

9. The biomass solid particle pyrolysis reactor according to claim 8, characterized in that: The fixed sleeve (19) has multiple deflection rods (25) evenly hinged to the side near the top. The free end of the deflection rod (25) is rotatably connected to a striking ball (26). The guide cover (4) has an annular protrusion (27) coaxially connected to the inner wall near the top. The inner side of the annular protrusion (27) is inclined downward. In the initial state, the striking ball (26) is in contact with the top of the annular protrusion (27). Several spherical protrusions (28) are evenly fixed to the top of the annular protrusion (27). The spherical protrusions (28) can contact the striking ball (26). The top of the fixed sleeve (19) is fixedly connected to a limiting plate (29). When the deflection rod (25) contacts the limiting plate (29), the striking ball (26) can remain separated from the annular protrusion (27) and the spherical protrusions (28).

10. The biomass solid particle pyrolysis reactor according to claim 9, characterized in that: A filter screen (30) is horizontally arranged on the top of the guide cover (4). The filter screen (30) is fixedly connected to the inner wall of the reaction tank (1), and the filter screen (30) is rotatably sleeved on the drive shaft (16). An exhaust fan (31) is arranged on the top of the filter screen (30), and the exhaust fan (31) is fixedly connected to the drive shaft (16).

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