Rotary biomass pyrolysis carbonization furnace process system

Abstract

The invention discloses a rotary biomass pyrolysis carbonization furnace process system, and belongs to the technical field of biomass pyrolysis. A front end cover and a rear end cover of the biomass pyrolysis carbonization furnace are rotationally connected with a barrel, the front end cover is connected with a pyrolysis gas output pipeline, the rear end cover is connected with a high-temperature pyrolysis gas input pipeline, a first branch pipeline of the pyrolysis gas output pipeline is connected with a combustion furnace, and a smoke output pipeline is further arranged on the combustion furnace; pyrolysis gas in a first heat exchange channel of the first-stage heat exchanger is heated through heat exchange and then enters the cylinder through a rear end cover; the problem that indirect heating type biomass pyrolysis equipment is low in heat transfer efficiency is solved, the heat value of pyrolysis gas is increased, the pyrolysis gas is heated and circulated through the first-stage heat exchanger, air is heated through the second-stage heat exchanger, heat provided by an external heat source is not needed, and the heat transfer efficiency is improved. And heat of combustion pyrolysis gas can be fully utilized, and the energy utilization rate is high.

Description

Technical Field

[0001] The present invention relates to the technical field of biomass pyrolysis, and particularly relates to a process system of a rotary biomass pyrolysis and carbonization furnace. Background Art

[0002] Biomass resources are renewable resources that are widely distributed and huge in quantity, and are also environment-friendly low-carbon energy sources, playing an irreplaceable role in the sustainable development of human society. Biomass undergoes pyrolysis and carbonization to produce pyrolysis gas and pyrolysis carbon; both pyrolysis gas and pyrolysis carbon are low-carbon energy sources, which can be used to replace traditional fossil fuels such as coal and natural gas to achieve low-carbon fuel substitution.

[0003] Existing rotary biomass pyrolysis furnaces adopt indirect or direct heating methods, and the heating medium is high-temperature flue gas, which is generated by the combustion of coal, fuel oil, natural gas, biomass gas or other energy sources. The indirect heating method means that the heating medium transfers heat to the biomass raw materials in the inner furnace through the metal outer wall of the rotary furnace body, which has problems of low heat transfer efficiency and large heat loss of the equipment; although the direct heating method improves the heat transfer efficiency, the heating medium still uses high-temperature flue gas generated by energy combustion, and the calorific value of the biomass gas is reduced after the flue gas is mixed with the pyrolysis gas, affecting the utilization of the gas. Summary of the Invention

[0004] The purpose of the present invention is to overcome the problems in the prior art, and provide a process system of a rotary biomass pyrolysis and carbonization furnace, which adopts the method of direct heat transfer between high-temperature pyrolysis gas and biomass, not only solves the problem of low heat transfer efficiency of indirect heating biomass pyrolysis equipment, but also improves the calorific value of pyrolysis gas.

[0005] A process system of a biomass pyrolysis and carbonization furnace of the present invention includes a biomass pyrolysis and carbonization furnace, which includes a cylinder body, a front end cover and a rear end cover. Both the front end cover and the rear end cover are rotatably connected to the cylinder body. The front end cover is connected with a pyrolysis gas output pipeline, and the rear end cover is connected with a high-temperature pyrolysis gas input pipeline. The pyrolysis gas output pipeline at least includes a first branch pipeline and a second branch pipeline; A combustion furnace, which is connected to the first branch pipeline and is used for burning part of the pyrolysis gas of the biomass pyrolysis and carbonization furnace. The combustion furnace is also provided with a flue gas output pipeline for outputting the high-temperature flue gas generated by the combustion of the combustion furnace; The primary heat exchanger has a first heat exchange channel and a second heat exchange channel inside. The input end of the first heat exchange channel is connected to the second branch pipeline. The output end of the first heat exchange channel is connected to the rear end cover through the high-temperature pyrolysis gas input pipeline. The pyrolysis gas entering the first heat exchange channel through the second branch pipeline is heated through heat exchange and then enters the inside of the cylinder body from the rear end cover through the high-temperature pyrolysis gas input pipeline. The input end of the second heat exchange channel is connected to the flue gas output pipeline of the combustion furnace, and the high-temperature flue gas after heat exchange and cooling is discharged through the output end of the second heat exchange channel.

[0006] Preferably, a cyclone dust collector is further connected to the pyrolysis gas output pipeline. The cyclone dust collector is connected to a pyrolysis gas fan, and the air outlet end of the pyrolysis gas fan is respectively connected to the first branch pipeline and the second branch pipeline.

[0007] Preferably, a third branch pipeline is further connected to the air outlet end of the pyrolysis gas fan, and the third branch pipeline is used to supply a part of the pyrolysis gas externally.

[0008] Preferably, a secondary heat exchanger is further included. The secondary heat exchanger has a third heat exchange channel and a fourth heat exchange channel inside. The third heat exchange channel is connected to the output end of the second heat exchange channel, and the fourth heat exchange channel is connected to a blowing device. The secondary heat exchanger is used to exchange heat between the flue gas cooled by the primary heat exchanger and the air sent by the blowing device. The air heated through heat exchange enters the combustion furnace for combustion, and the flue gas cooled again in the third heat exchange channel is transported to the flue gas purification system.

[0009] Preferably, the front end cover and the rear end cover are respectively sealed with packing at the end parts of the cylinder body.

[0010] Preferably, a screw feeder is further connected to the front end cover, and a screw discharger is further connected to the rear end cover.

[0011] Preferably, the feeding end of the screw feeder is connected to a belt conveyor, and the discharging end of the belt conveyor penetrates through the front end cover and enters the cylinder body.

[0012] Preferably, spiral blades are provided on the inner wall of the cylinder body.

[0013] Preferably, the carbon powder output end of the cyclone dust collector is connected to the screw discharger through a pipeline, and is used to mix the pyrolysis carbon powder collected by the cyclone dust collector into the pyrolysis carbon powder discharged by the screw discharger.

[0014] Preferably, flow regulating valves are provided on the first branch pipeline, the second branch pipeline and the second branch pipeline.

[0015] Compared with the prior art, the beneficial effects of the present invention are: The front end cover of the biomass pyrolysis carbonization furnace of the present invention is connected with a pyrolysis gas output pipeline. Part of the pyrolysis gas output through the pyrolysis gas output pipeline enters the combustion furnace for combustion, and the other part enters the primary heat exchanger for heat exchange. The primary heat exchanger of the present invention is also connected with the combustion furnace through a flue gas output pipeline. Therefore, the high-temperature flue gas generated by the combustion furnace can enter the primary heat exchanger to exchange heat with the pyrolysis gas entering the primary heat exchanger, heating the pyrolysis gas entering the primary heat exchanger into high-temperature pyrolysis gas. The high-temperature pyrolysis gas then enters the interior of the cylinder through the high-temperature pyrolysis gas input pipeline connecting the primary heat exchanger and the rear end cover, and directly contacts the biomass raw materials in the cylinder as a heating medium. Therefore, the present invention adopts the method of direct contact heat transfer between high-temperature pyrolysis gas and biomass, which not only solves the problem of low heat transfer efficiency of indirect heating type biomass pyrolysis equipment, but also improves the calorific value of pyrolysis gas and avoids the problem of increasing equipment selection caused by flue gas heating.

[0016] The present invention uses part of the combustion pyrolysis gas as a heat source, heats the circulating pyrolysis gas through the primary heat exchanger, and heats the air through the secondary heat exchanger. It not only does not require an external heat source to provide heat, but also can make full use of the heat of the combustion pyrolysis gas, with high energy utilization efficiency. Brief Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of the biomass pyrolysis carbonization furnace process system according to an embodiment of the present invention.

[0018] Figure 2 It is a schematic diagram of the structure of the biomass pyrolysis carbonization furnace according to an embodiment of the present invention.

[0019] Description of the Reference Numerals: 1. Biomass pyrolysis carbonization furnace; 101. Cylinder; 102. Front end cover; 103. Rear end cover; 2. Pyrolysis gas output pipeline, 3. High-temperature pyrolysis gas input pipeline, 4. First branch pipeline, 5. Second branch pipeline, 6. Third branch pipeline, 7. Flue gas output pipeline, 8. Primary heat exchanger; 9. Cyclone dust collector; 10. Pyrolysis gas blower, 11. Secondary heat exchanger; 12. Blowing equipment; 13. Belt conveyor, 14. Combustion furnace; 15. Screw feeder, 16. Screw discharger, 17. Screw blade. Detailed Embodiments

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0021] Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this disclosure pertains. The terms "first", "second" and similar terms used in this disclosure do not denote any order, quantity or importance, but are merely used to distinguish different components. Words such as "comprising" or "including" mean that the elements or objects appearing before "comprising" or "including" cover the elements or objects listed after "comprising" or "including" and their equivalents, and do not exclude other elements or objects. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Upper", "lower", "left", "right", etc. are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0022] A rotary biomass pyrolysis carbonization furnace process system of the present invention includes a biomass pyrolysis carbonization furnace 1. It should be noted that the biomass raw materials entering the biomass pyrolysis carbonization furnace 1 generally need to be crushed, and the particle size is not greater than 10 cm. The biomass pyrolysis carbonization furnace 1 in this embodiment includes a cylinder body 101, a front end cover 102 and a rear end cover 103. The front end cover 102 and the rear end cover 103 are both rotatably connected to the cylinder body 101. The biomass pyrolysis carbonization furnace 1 of this embodiment is the core equipment of the system, mainly including the cylinder body 101, the front end cover 102 and the rear end cover 103. The front end cover 102 and the rear end cover 103 are rotatably connected to the cylinder body 101 to ensure that the cylinder body 101 can rotate smoothly. The rotation of the cylinder body 101 is realized by two groups of rims arranged on the outer wall. One group is the driving wheel, which is connected to a power device (such as a motor or a reducer) through gears or chains, and the other group is the driven wheel, which plays a supporting role. This design enables the cylinder body 101 to be heated evenly, ensuring that the biomass raw materials are fully pyrolyzed in the furnace.

[0023] The front end cover 102 of this embodiment is connected with a pyrolysis gas output pipeline 2. The pyrolysis gas output pipeline 2 at least includes a first branch pipeline 4 and a second branch pipeline 5; the rear end cover 103 is connected with a high-temperature pyrolysis gas input pipeline 3. The temperature of the high-temperature pyrolysis gas in this embodiment is 600°C - 700°C.

[0024] A combustion furnace 14 is connected to the first branch pipeline 4 for burning a part of the pyrolysis gas of the biomass pyrolysis carbonization furnace 1. The combustion furnace 14 is also provided with a flue gas output pipeline 7 for outputting the high-temperature flue gas generated by the combustion of the combustion furnace 14; the temperature of the high-temperature flue gas in this embodiment is 900°C to 1200°C.

[0025] In this embodiment, the primary heat exchanger 8 has a first heat exchange channel and a second heat exchange channel inside. The input end of the first heat exchange channel is connected to the second branch pipeline 5, the output end of the first heat exchange channel is connected to the rear end cover 103, and the pyrolysis gas in the first heat exchange channel enters the inside of the cylinder 101 through the rear end cover 103 after heat exchange and temperature rise. The input end of the second heat exchange channel is connected to the flue gas output pipeline 7 of the combustion furnace 14, and the output end of the second heat exchange channel is used to discharge the flue gas cooled after heat exchange. Through the primary heat exchanger 8, the pyrolysis gas entering the primary heat exchanger 8 exchanges heat with the high-temperature flue gas, realizing the recycling of thermal energy and significantly improving the thermal efficiency of the system.

[0026] As another alternative embodiment, a cyclone dust collector 9 is also connected to the pyrolysis gas output pipeline 2. The cyclone dust collector 9 is connected to the pyrolysis gas blower 10, and the air outlet end of the pyrolysis gas blower 10 is respectively connected to the first branch pipeline 4 and the second branch pipeline 5.

[0027] In this embodiment, the heat source of the biomass pyrolysis carbonization furnace 1 is high-temperature pyrolysis gas. The high-temperature pyrolysis gas enters the biomass pyrolysis carbonization furnace 1 through the rear end cover 103. The high-temperature pyrolysis gas flows in the opposite direction to the biomass raw material and directly contacts and transfers heat to the biomass raw material. The cooled pyrolysis gas and the pyrolysis gas generated by the biomass pyrolysis are mixed together and flow out of the biomass pyrolysis carbonization furnace 1 through the front end cover 102 under the action of the pyrolysis gas blower 10. Since the biomass pyrolysis carbonization furnace in this embodiment is a rotary biomass pyrolysis carbonization furnace, that is, the cylinder 101 can rotate relative to the front end cover 102 and the rear end cover 103, the contact between the biomass raw material and the high-temperature pyrolysis gas is more sufficient, and the pyrolysis efficiency is higher.

[0028] As another alternative embodiment, the air outlet end of the pyrolysis gas blower 10 is also connected to a third branch pipeline 6, and the third branch pipeline 6 is used to supply a part of the pyrolysis gas externally.

[0029] Pyrolysis gas is one of the main by-products generated during the biomass pyrolysis process and has a relatively high calorific value. In this system, the pyrolysis gas is discharged through the pyrolysis gas output pipeline 2 of the front end cover 102 and is divided into multiple branch pipelines for treatment with different purposes. In this embodiment, the branch pipeline is three branch pipelines. The first branch pipeline 4: conveys part of the pyrolysis gas to the combustion furnace 14 for combustion to generate high-temperature flue gas. The high-temperature flue gas generated by the combustion furnace 14 is discharged through the flue gas output pipeline 7 for subsequent heat exchange. The second branch pipeline 5: conveys another part of the pyrolysis gas to the primary heat exchanger 8 to exchange heat with the high-temperature flue gas. The pyrolysis gas after temperature rise re-enters the biomass pyrolysis carbonization furnace 1 and continues to participate in the pyrolysis process as a heat source. The third branch pipeline 6 (optional): supplies a part of the pyrolysis gas externally for other industrial uses or energy supply. Therefore, the pyrolysis gas in this embodiment can not only be used as the heat source of the biomass pyrolysis carbonization furnace 1 but also be supplied externally, increasing the economic benefits and flexibility of the system.

[0030] In this embodiment, flow regulating valves are provided on the first branch pipeline, the second branch pipeline, and the second branch pipeline. Therefore, flow regulating valves are provided for all three paths of the pyrolysis gas to adjust the flow rate of each path. The temperature of the high-temperature pyrolysis gas at the outlet of the primary heat exchanger is adjusted according to the flue gas volume and temperature at the outlet of the combustion furnace. The flue gas volume and temperature at the outlet of the combustion furnace are determined by the pyrolysis gas volume for combustion and the air volume supplied to the combustion furnace. The pyrolysis gas volume for combustion is controlled by the flow regulating valve designed on the first branch pipeline.

[0031] As another alternative embodiment, it further includes a secondary heat exchanger 11. The secondary heat exchanger 11 has a third heat exchange channel and a fourth heat exchange channel inside. The third heat exchange channel is connected to the output end of the second heat exchange channel, and the fourth heat exchange channel is connected to the air blower 12. The secondary heat exchanger 11 is used to exchange heat between the flue gas cooled by the primary heat exchanger 8 and the air sent by the air blower 12. The air heated by the heat exchange enters the combustion furnace 14 for combustion, and the flue gas cooled again in the third heat exchange channel is transported to the flue gas purification system.

[0032] This system is equipped with a primary heat exchanger 8 and a secondary heat exchanger 11, which are respectively used for heat exchange of pyrolysis gas and flue gas.

[0033] The primary heat exchanger 8 is internally provided with a first heat exchange channel and a second heat exchange channel. The first heat exchange channel is used for heating the pyrolysis gas, and the second heat exchange channel is used for cooling the high-temperature flue gas. Through heat exchange, the pyrolysis gas is heated and then re-enters the biomass pyrolysis carbonization furnace 1, while the flue gas is cooled and then enters the secondary heat exchanger 11. The secondary heat exchanger 11 is internally provided with a third heat exchange channel and a fourth heat exchange channel. The third heat exchange channel is connected to the flue gas output end of the primary heat exchanger 8, and the fourth heat exchange channel is connected to the air blower 12. The secondary heat exchanger 11 exchanges heat between the cooled flue gas and the air sent by the air blower 12. The heated air enters the combustion furnace 14, further improving the combustion efficiency. In this embodiment, through two-stage heat exchangers, the system realizes efficient recovery of the heat in the pyrolysis gas and flue gas, reducing energy waste. The secondary heat exchanger 11 preheats the air and then sends it into the combustion furnace 14, improving the combustion efficiency and reducing fuel consumption.

[0034] As another alternative embodiment, the front end cover 102 and the rear end cover 103 are respectively dynamically sealed with the end part of the cylinder body 101 by packing to ensure good sealing performance under high temperature and rotating conditions, prevent pyrolysis gas leakage, and improve the safety and environmental protection of the system.

[0035] As another alternative embodiment, a screw feeder 15 is further connected to the front end cover 102, and a screw discharger 16 is further connected to the rear end cover 103. As another alternative embodiment, a belt conveyor 13 is connected to the feeding end of the screw feeder 15, and the discharging end of the screw feeder 15 penetrates through the front end cover 102 and enters the cylinder body 101. The connection of the belt conveyor 13 to the feeding end of the screw feeder 15 ensures the uniform supply of raw materials. The screw discharger 16 is used to continuously discharge the carbonized biochar out of the furnace, ensuring the continuity of production.

[0036] As another alternative embodiment, a screw blade is provided in the cylinder body 101. Therefore, the biomass raw material moves from the front end cover 102 to the rear end cover 103 under the push of the screw blade, and contacts the pyrolysis gas in a countercurrent manner for heat transfer, realizing the pyrolysis carbonization of the biomass raw material. The generated pyrolytic carbon enters the rear end cover 103 and is conveyed out of the biomass pyrolysis carbonization furnace 1 by the screw discharger 16.

[0037] As another alternative embodiment, the carbon powder output end of the cyclone dust collector 9 is connected to the screw discharger 16 through a pipeline, and is used to mix the pyrolytic carbon powder collected by the cyclone dust collector 9 into the pyrolytic carbon powder discharged by the screw discharger 16.

[0038] The biomass pyrolysis furnace in this embodiment is a rotary biomass pyrolysis furnace. As a more preferred method, the screw conveyor has the function of sealing the material.

[0039] As Figure 1 and Figure 2 As shown in [relevant figures], the rotary biomass pyrolysis furnace of this embodiment is composed of a front end cover 102, a rear end cover 103, a cylinder body 101, and an integrated screw feeder 15 and screw discharger 16. Among them, the screw feeder 15 is connected to the front end cover 102, and the screw discharger 16 is connected to the rear end cover 103. Both the front end cover 102 and the rear end cover 103 are stationary structures, and the cylinder body 101 is rotatably connected to the front end cover 102 and the rear end cover 103. The cylinder body 101 rotates slowly (at a rotation speed of 1 - 5 r / min) driven by a motor and a speed reducer.

[0040] As Figure 1 As shown in [relevant figures], the biomass raw material is lifted to the screw feeder by the belt conveyor 13, and then is conveyed into the cylinder body 101 of the biomass pyrolysis carbonization furnace through the screw feeder. The recycling principle of the pyrolysis gas generated by the biomass pyrolysis carbonization furnace 1 in this embodiment is as follows. The pyrolysis gas in the biomass pyrolysis carbonization furnace 1 of this embodiment flows out from the front end cover 102, and first passes through the cyclone dust collector 9 to remove the pyrolytic carbon powder carried by the pyrolysis gas. After the pyrolytic carbon powder discharged from the bottom of the cyclone dust collector 9 is collected, it is mixed with the pyrolytic carbon powder discharged by the screw discharger 16 for subsequent use.

[0041] The pyrolysis gas at the outlet of the cyclone dust collector 9 enters the pyrolysis gas blower 10. Under the action of the pyrolysis gas blower 10, a part of it enters the combustion furnace 14 to burn and generate high-temperature flue gas; a part enters the primary heat exchanger 8 as recycled pyrolysis gas to be heated up, and then enters the biomass pyrolysis and carbonization furnace 1 as a heat source; the third part of the pyrolysis gas is supplied as a low-carbon energy source, which can be directly burned for heating or can be condensed to produce wood vinegar liquid and wood gas.

[0042] A part of the pyrolysis gas burns in the combustion furnace 14 to generate high-temperature flue gas. After passing through the primary heat exchanger 8 and the secondary heat exchanger 11 in sequence, the temperature drops to 100 - 150 °C, and then it is discharged up to standard after being treated by the flue gas purification device. The heat medium of the primary heat exchanger 8 is the flue gas of the combustion furnace 14, and the cold medium is the pyrolysis gas. The pyrolysis gas enters the biomass pyrolysis and carbonization furnace 1 after being heated; the heat medium of the secondary heat exchanger 11 is the flue gas at the outlet of the primary heat exchanger 8, and the cold medium is air. The air enters the combustion furnace 14 after being heated. The heat exchanger can be a plate heat exchanger, or a tubular heat exchanger, a finned tubular heat exchanger or other types of gas-gas heat exchangers.

[0043] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary biomass pyrolysis carbonization furnace process system, characterized in that: include: A biomass pyrolysis carbonization furnace comprises a cylinder, a front cover and a rear cover, wherein the front cover and the rear cover are both rotatably connected to the cylinder, the front cover is connected to a pyrolysis gas output pipeline, the rear cover is connected to a high-temperature pyrolysis gas input pipeline, and the pyrolysis gas output pipeline comprises at least a first branch pipeline and a second branch pipeline; A combustion furnace connected to the first branch pipeline, and the combustion furnace is also provided with a smoke output pipeline; The first-stage heat exchanger has a first heat exchange channel and a second heat exchange channel inside. The input end of the first heat exchange channel is connected to the second branch pipeline, and the output end of the first heat exchange channel is connected to the rear end cover through the high-temperature pyrolysis gas input pipeline. The pyrolysis gas entering the first heat exchange channel through the second branch pipeline is heated and then enters the interior of the cylinder from the rear end cover through the high-temperature pyrolysis gas input pipeline; the input end of the second heat exchange channel is connected to the flue gas output pipeline of the combustion furnace, and the high-temperature flue gas after heat exchange and cooling is discharged through the output end of the second heat exchange channel.

2. The rotary biomass pyrolysis carbonization furnace process system according to claim 1, characterized in that: The pyrolysis gas output pipeline is also connected to a cyclone dust collector, the cyclone dust collector is connected to a pyrolysis gas blower, and the air outlet end of the pyrolysis gas blower is respectively connected to the first branch pipeline and the second branch pipeline.

3. The rotary biomass pyrolysis carbonization furnace process system according to claim 2, characterized in that: The air outlet end of the pyrolysis gas blower is also connected to a third branch pipeline, and the third branch pipeline is used to supply a part of the pyrolysis gas to the outside.

4. The rotary biomass pyrolysis carbonization furnace process system according to claim 1, characterized in that: It also includes a secondary heat exchanger, which has a third heat exchange channel and a fourth heat exchange channel inside. The third heat exchange channel is connected to the output end of the second heat exchange channel, and the fourth heat exchange channel is connected to the blowing device. The secondary heat exchanger is used to exchange heat between the flue gas cooled by the primary heat exchanger and the air sent in by the blowing device. The air heated by the heat exchange enters the combustion furnace for combustion, and the flue gas cooled again in the third heat exchange channel is transported to the flue gas purification system.

5. The rotary biomass pyrolysis carbonization furnace process system according to claim 1, characterized in that: The front end cover and the rear end cover are sealed with the ends of the cylinder body by packing respectively.

6. The rotary biomass pyrolysis carbonization furnace process system according to claim 2, characterized in that: The front end cover is also connected to a spiral feeder, and the rear end cover is also connected to a spiral discharger.

7. The rotary biomass pyrolysis carbonization furnace process system according to claim 6, characterized in that: The feeding end of the screw feeder is connected with a belt conveyor, and the discharging end of the belt conveyor passes through the front end cover and enters the cylinder.

8. The rotary biomass pyrolysis carbonization furnace process system according to claim 1, characterized in that: The inner wall of the cylinder is provided with spiral blades.

9. The rotary biomass pyrolysis carbonization furnace process system according to claim 6, characterized in that: The carbon powder output end of the cyclone dust collector is connected to the pipeline of the spiral discharger, so as to mix the pyrolytic carbon powder collected by the cyclone dust collector into the pyrolytic carbon powder discharged by the spiral discharger.

10. The rotary biomass pyrolysis carbonization furnace process system according to claim 3, characterized in that: The first branch pipeline, the second branch pipeline and the second branch pipeline are all provided with flow regulating valves.

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