A forest farming biomass pry-mounted pyrolysis device

Abstract

The utility model relates to a kind of forest agriculture biomass pry installation type pyrolysis device, including heat energy supply room and pyrolysis furnace, heat energy supply room is set on the vertical center line of pyrolysis furnace, heat energy supply room includes heat transfer wall, heat transfer wall is enclosed to form heating cavity, pyrolysis wall is set on the periphery of heat transfer wall to form annular pyrolysis cavity, solid particles enter as bed material from above pyrolysis furnace, oxygen-free gas enters from bottom to make bed material form fluidized bed in pyrolysis cavity, heat is generated in heating cavity and heat is transferred to fluidized bed, the lower portion of pyrolysis furnace is communicated with raw material input mechanism for inputting biomass raw material into pyrolysis cavity, the top of pyrolysis furnace is communicated with output mechanism for outputting gaseous intermediate outside pyrolysis furnace, it can be moved to straw, sawdust and other abandoned low-density biomass raw material production place to be handled, make it be converted into liquid oil and combustible gas, replace high-pollution energy such as coal, heat loss is less, and thermal efficiency is high and easy to control, product yield is high.

Description

Technical Field

[0001] This utility model relates to the technical field of biomass energy conversion, specifically a skid-mounted pyrolysis device for forestry and agricultural biomass. Background Technology

[0002] Pyrolysis is a biomass energy conversion technology that refers to the process of decomposing low-density biomass waste materials such as straw, wood, and rice husks into intermediates through heating under anaerobic conditions. These intermediates then react to generate gaseous, liquid, and solid products. Biomass pyrolysis technology can convert agricultural and forestry waste such as straw and sawdust into liquid oil and combustible gas, replacing high-pollution energy sources like coal and significantly reducing emissions of pollutants such as particulate matter and sulfur dioxide. Currently, the industry faces challenges due to the dispersed nature of forestry and agricultural biomass production sites, their long distances from biomass pyrolysis plants, resulting in high transportation costs. Furthermore, biomass pyrolysis plants require large land areas, consume significant amounts of energy during the pyrolysis process, and involve long pipelines carrying raw materials, thus limiting reaction efficiency and product quality. Utility Model Content

[0003] The purpose of this invention is to provide a skid-mounted pyrolysis device for forestry and agricultural biomass to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A skid-mounted pyrolysis device for forestry and agricultural biomass includes a heat supply chamber and a pyrolysis furnace. The pyrolysis furnace comprises, from top to bottom, a first top cover, a pyrolysis wall, and a first base connected together. The heat supply chamber comprises, from top to bottom, a second top cover, a heat transfer wall, and a second base connected together. The heat supply chamber is installed inside the pyrolysis reactor, with the second top cover positioned on the vertical centerline of the first top cover. The heat transfer wall encloses a heating chamber, and the pyrolysis wall is positioned around the heat transfer wall to form a circumferential pyrolysis chamber. The first base is equipped with a sand feeding mechanism for conveying solid particles into the pyrolysis chamber. The solid particles form a fluidized bed within the pyrolysis chamber. The heat supply chamber generates heat and transfers heat to the fluidized bed. The lower part of the pyrolysis furnace is connected to a raw material feeding mechanism for inputting biomass raw materials into the pyrolysis chamber. The lower part of the pyrolysis furnace is also connected to a first gas inlet mechanism for inputting oxygen-free gas into the pyrolysis chamber. The first top cover is connected to an outlet mechanism for outputting gaseous intermediates outside the pyrolysis furnace.

[0006] As a further embodiment of this utility model: a heat transfer pipe is provided between the heat transfer wall and the second base. The heat transfer pipe includes a connected bent pipe and a vertical pipe from top to bottom. The side opening of the bent pipe is connected to the pyrolysis chamber. The bottom opening of the vertical pipe is downward and passes through the second base. The first base is provided with a jetting mechanism for spraying high-pressure oxygen-free gas. The jetting nozzle of the jetting mechanism is aligned with the bottom opening of the vertical pipe.

[0007] As a further improvement of this utility model, the jetting mechanism includes a speed control mechanism for controlling the flow rate of high-pressure oxygen-free gas.

[0008] As a further embodiment of this utility model: a protrusion is provided around the lower periphery of the pyrolysis wall, and an opening is provided at the lower part of the pyrolysis wall. The interior of the protrusion is a cavity that communicates with the pyrolysis chamber through the opening. The first base serves as the inner bottom surface of the protrusion, and a sand feeding mechanism is provided on the inner bottom surface of the protrusion. The vertical cross-section of the pyrolysis furnace and the protrusion is stepped.

[0009] As a further embodiment of this utility model: the sand feeding mechanism includes a sandblasting head, the sandblasting head protrudes from the top surface of the first base, and the opening of the sandblasting head for spraying solid particles faces obliquely downward.

[0010] As a further embodiment of this utility model: the output mechanism includes an output pipe and a centrifugal separator assembly. One end of the output pipe is connected to the first top cover and communicates with the pyrolysis chamber, and the other end is connected to the upper part of the centrifugal separator assembly. The lower end of the centrifugal separator assembly is connected to the first top cover and communicates with the pyrolysis chamber.

[0011] As a further embodiment of this utility model: the centrifugal separator assembly includes a first centrifugal separator and a second centrifugal separator, the first centrifugal separator and the second centrifugal separator are connected by a pipe, and the lower end of the first centrifugal separator is provided with an opening connected to the pyrolysis chamber.

[0012] As a further embodiment of this utility model: the output mechanism further includes a transmission pipe and a condensation mechanism, one end of the transmission pipe is connected to a centrifugal separator assembly, and the other end is connected to the condensation mechanism.

[0013] As a further embodiment of this utility model: the raw material feeding mechanism includes a crushing mechanism for crushing biomass raw materials.

[0014] As a further embodiment of this utility model: the second base is connected to a third air intake mechanism for inputting air into the heating chamber, the second top cover is connected to a fuel intake mechanism for inputting fuel into the heating chamber, and the second top cover is connected to an exhaust mechanism for outputting combustion exhaust gas out of the heating chamber.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. The various functional mechanisms of the skid-mounted pyrolysis device for forestry and agricultural biomass provided by this utility model are tightly installed and have a small size. It can be moved to the production site of waste low-density biomass raw materials such as straw and sawdust for processing, converting them into liquid oil and combustible gas, replacing high-pollution energy sources such as coal. Through structural design, the solid particle fluidized bed is evenly distributed outside the heat supply room, resulting in less heat loss, high thermal efficiency, easy control, and a high product yield.

[0017] 2. In this utility model, the first centrifugal separator can return the solid particles mixed in the gaseous intermediate to the pyrolysis chamber, and the second centrifugal separator can add the incompletely pyrolyzed biomass raw materials contained in the gaseous intermediate back into the pyrolysis chamber, with almost no loss of solid particles, making full use of resources.

[0018] 3. In this invention, a portion of the gaseous intermediate produced is condensed into liquid oil by a condensation mechanism, while the uncondensed gaseous intermediate, mainly composed of hydrocarbons, is reused as fuel in the heating chamber, making full use of resources.

[0019] 4. In this utility model, the combustion exhaust gas generated by the exhaust mechanism is burned off by the burnout mechanism, and the gas, mainly carbon dioxide, is introduced into the pyrolysis chamber to help create the oxygen-free and temperature conditions in the pyrolysis chamber, making full use of resources.

[0020] 5. In this utility model, the jetting mechanism propels solid particles through the heat transfer tube into the fluidized bed by spraying high-pressure oxygen-free gas. On the one hand, it promotes the flow and heating of the fluidized bed and accelerates the mixing of the fluidized bed and biomass raw materials. On the other hand, it allows the deposited biomass raw materials to be reintroduced into the fluidized bed.

[0021] 6. In this utility model, the first air inlet mechanism enables the oxygen-free gas to lift the solid particles upward to form a fluidized bed, and the second air inlet mechanism enables the oxygen-free gas to flow around the heat supply chamber, which can make the fluidized bed of solid particles in the pyrolysis chamber more full, improve the heat utilization rate, and reduce heat loss.

[0022] 7. The air inlet head used in this utility model has an opening that faces downwards to input oxygen-free gas into the pyrolysis chamber, and the solid particles will not leave the pyrolysis chamber when they fall back, so it can be reused and saves resources. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] Figure 2 This is a top view of the structure of this utility model.

[0025] Figure 3 This is a schematic diagram of the internal structure of this utility model.

[0026] The components are as follows: 1. Raw material feeding mechanism; 2. Pyrolysis furnace; 21. First top cover; 22. Pyrolysis wall; 23. First base; 24. Pyrolysis chamber; 25. First air intake mechanism; 251. First air intake pipe; 252. Air intake head; 26. Sand feeding mechanism; 27. Air jet mechanism; 28. Protrusion; 29. ​​Second air intake mechanism; 3. Heat supply chamber; 31. Second top cover; 32. Heat transfer wall; 33. Second base; 34. Heating chamber; 35. Third air intake mechanism; 351. Temperature sensor; 36. Fuel feeding mechanism; 37. Exhaust mechanism; 371. Centrifugal separator assembly; 372. Exhaust pipe; 38. Heat transfer pipe; 381. Bend pipe; 382. Vertical pipe; 4. Production mechanism; 41. Output pipe; 42. First centrifugal separator; 43. Second centrifugal separator; 44. Transmission pipe. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-3 .

[0029] A skid-mounted pyrolysis device for forestry and agricultural biomass includes a heat supply chamber 3 and a pyrolysis furnace 2. The pyrolysis furnace 2 comprises, from top to bottom, a first top cover 21, a pyrolysis wall 22, and a first base 23 connected together. The heat supply chamber 3 comprises, from top to bottom, a second top cover 31, a heat transfer wall 32, and a second base 33 connected together. The pyrolysis wall 22 and the heat transfer wall 32 have annular cross-sections. The first top cover 21 has an annular cross-section, and the second top cover 31 has a circular cross-section. The second top cover 31 is positioned on the vertical centerline of the first top cover 21. The heat transfer wall 32 encloses a heating chamber 34. The pyrolysis wall 22 is positioned around the heat transfer wall 32 to form a circumferential pyrolysis chamber 24. The first top cover 21 is connected to a sand feeding mechanism 26 for conveying solid particles into the pyrolysis chamber 24. The solid particles are quartz sand. The first base 33... The base 23 is connected to a first air inlet mechanism 25 for inputting oxygen-free gas into the pyrolysis chamber 24. The oxygen-free gas is nitrogen, which acts as a gasifying agent for the fluidized bed. It enters the pyrolysis chamber 24 upward at a speed of 1-3 m / s, lifting the solid particles and forming a fluidized bed within the pyrolysis chamber 24. The heat supply chamber 3 is used to generate heat and transfer it to the fluidized bed. The heat supply chamber 3 has a built-in ignition mechanism, which generates heat through combustion. The lower part of the pyrolysis furnace 2 is connected to a feed material inlet mechanism 1 for inputting biomass raw materials into the pyrolysis chamber 24. The first top cover 21 is connected to a production mechanism 4 for outputting gaseous intermediates to the outside of the pyrolysis furnace 2. After further processing, the gaseous intermediates can generate low-molecular-weight hydrocarbon combustible gas, liquid oils such as acetic acid, acetone, and methanol, and solid fuels such as charcoal.

[0030] The feed material mechanism 1 includes a crushing mechanism for crushing biomass raw materials. The outlet of the feed material mechanism 1 is directly connected to the pyrolysis chamber 24, and the biomass raw material particles are directly fed into the pyrolysis chamber 24.

[0031] The lower periphery of the pyrolysis wall 22 is surrounded by a protrusion 28. The lower part of the pyrolysis wall 22 is provided with an opening. The interior of the protrusion 28 is a cavity that communicates with the pyrolysis chamber 24 through the opening. The fluidized bed moves within the cavity and the pyrolysis chamber 24. The first base 23 serves as the inner bottom surface of the protrusion 28. A first air inlet mechanism 25 is connected to the inner bottom surface of the protrusion 28. The vertical cross-section of the pyrolysis furnace 2 and the protrusion 28 is stepped. The side wall of the protrusion 28 is connected to a second air inlet mechanism 29 for introducing oxygen-free gas into the interior of the protrusion 28. Four second air inlet mechanisms 29 are provided and distributed along the circumferential side wall of the protrusion 28. The first air intake mechanism 25 enables oxygen-free gas to lift solid particles upwards, forming a fluidized bed. The second air intake mechanism 29 enables oxygen-free gas to make the fluidized bed move around the heat supply chamber 3, which can make the solid particle fluidized bed in the pyrolysis chamber 24 and the cavity inside the protrusion 28 more full, mix it quickly with biomass raw materials, improve heat utilization rate and reduce heat loss.

[0032] The first air intake mechanism 25 includes a first air intake pipe 251 and an air intake head 252. The air intake head 252 protrudes from the top surface of the first base 23. The opening of the air intake head 252 for inputting oxygen-free gas into the pyrolysis chamber 24 faces obliquely downward, so that the solid particles will not fall out of the pyrolysis chamber 24 when they fall back. It can be reused and saves resources.

[0033] A heat transfer pipe 38 is disposed between the heat transfer wall 32 and the second base 33. The heat transfer pipe 38 includes a connected bend 381 and a vertical pipe 382 from top to bottom. The side opening of the bend 381 communicates with the pyrolysis chamber 24, and the bottom opening of the vertical pipe 382 extends downward through the second base 33. The first base 23 is provided with a jetting mechanism 27 for spraying high-pressure oxygen-free gas, which is high-pressure nitrogen. The nozzle of the jetting mechanism 27 is aligned with the bottom opening of the vertical pipe 382. By spraying high-pressure oxygen-free gas, solid particles are propelled through the heat transfer pipe 38 and added to the fluidized bed. This promotes the flow and heating of the fluidized bed, accelerates the mixing of the fluidized bed and biomass feedstock, and allows the deposited biomass feedstock to be reintroduced into the fluidized bed. The jetting mechanism 27 includes a speed control mechanism (not shown in the figure) for controlling the flow rate of the high-pressure oxygen-free gas.

[0034] The output mechanism 4 includes an output pipe 41, a first centrifugal separator 42, and a second centrifugal separator 43. One end of the output pipe 41 is connected to the first top cover 21 and communicates with the pyrolysis chamber 24, while the other end is connected to the first centrifugal separator 42. The first centrifugal separator 42 and the second centrifugal separator 43 are connected by a pipe. The lower end of the first centrifugal separator 42 is connected to the first top cover 21 and communicates with the pyrolysis chamber 24, and the second centrifugal separator 43 communicates with the pyrolysis chamber 24. The first centrifugal separator 42 allows solid particles mixed in the gaseous intermediate to return to the pyrolysis chamber 24, and the second centrifugal separator 43 allows incompletely pyrolyzed biomass raw materials contained in the gaseous intermediate to be reintroduced into the pyrolysis chamber 24, resulting in almost no loss of solid particles and full utilization of resources.

[0035] The second base 33 is connected to a third air intake mechanism 35 for inputting air into the heating chamber 34. The second top cover 31 is connected to a fuel intake mechanism 36 for inputting fuel into the heating chamber 34. The second top cover 31 is also connected to an exhaust mechanism 37 for outputting combustion exhaust gas out of the heating chamber 34. A temperature sensor 351 is located on the second top cover 31 near the third air intake mechanism 35. The exhaust mechanism 37 includes a centrifugal separator assembly 371 and an exhaust pipe 372. One end of the centrifugal separator assembly 371 is connected to the second top cover 31 and communicates with the heating chamber 34, while the other end is connected to the exhaust pipe 372. The exhaust pipe 372 is Y-shaped when viewed from above. The exhaust pipe 372 is connected to a burnout mechanism (not shown in the figure) for burning off the combustion exhaust gas. The burnout mechanism is connected to the pyrolysis chamber 24 to assist in creating an oxygen-free environment within the pyrolysis chamber 24. After being burned through by the burnout mechanism, a gas mainly composed of carbon dioxide is introduced into the pyrolysis chamber 24 to help create oxygen-free and temperature conditions within the pyrolysis chamber 24, making full use of resources.

[0036] The output mechanism 4 also includes a transfer pipe 44. One end of the transfer pipe 44 is connected to the second centrifugal separator 43, and the other end is connected to a condensation mechanism (not shown in the figure) for condensing the gaseous intermediate into liquid oil. The condensation mechanism is connected to the fuel inlet mechanism 36 for adding the uncondensed gaseous intermediate into the heating chamber 34. Part of the produced gaseous intermediate is condensed into liquid oil by the condensation mechanism, while the uncondensed gaseous intermediate, mainly composed of hydrocarbons, is added back into the heating chamber 34 as fuel, making full use of resources. Two output pipes 41, two first centrifugal separators 42, and two second centrifugal separators 43 are provided. The transfer pipe 44 is T-shaped when viewed from above.

[0037] The implementation principle of this utility model is as follows: fuel is first added into the heating chamber 34 through the fuel inlet mechanism 36, and at the same time, the third air inlet mechanism 35 inputs air into the heating chamber 34. The combustion exhaust gas is discharged from the heating chamber 34 through the exhaust mechanism 37. After passing through the centrifugal separator assembly 371, the combustion exhaust gas is introduced into the burnout mechanism through the exhaust pipe 372. After the combustion exhaust gas is burned out, the gas mainly composed of carbon dioxide is introduced into the pyrolysis chamber 24 to help create the oxygen-free and temperature conditions in the pyrolysis chamber 24. After the heat transfer wall 32 and heat transfer tube 38 are preheated, the sand feeding mechanism 26 adds quartz sand particles as bed material into the pyrolysis chamber 24. The first air feeding mechanism 25 feeds nitrogen upward into the pyrolysis chamber 24. The nitrogen acts as a gasifying agent and enters the pyrolysis chamber 24 at a low speed, usually 1-3 m / s, causing the bed material to flow in a bubbling manner. The second air feeding mechanism 29 feeds nitrogen into the pyrolysis chamber 24 from the side, causing the bed material to move around the heat supply chamber 3. Biomass raw materials such as straw enter the pyrolysis furnace 2 in granular form through the raw material feeding mechanism 1. The jetting mechanism 27 sprays high-pressure nitrogen to push the quartz sand particles. The particles pass through the entire heat transfer tube 38, allowing the deposited biomass feedstock to be reintroduced into the fluidized bed. The generated gaseous intermediates exit the pyrolysis chamber 24 through the output pipe 41 and enter the first centrifugal separator 42. The quartz sand particles mixed in the gaseous intermediates are reintroduced into the pyrolysis chamber 24. After passing through the second centrifugal separator 43, the incompletely pyrolyzed biomass feedstock is reintroduced into the pyrolysis chamber 24. The remaining substances enter the condensation mechanism through the transfer pipe 44, where they are condensed to form liquid oil. The uncondensed gaseous intermediates, mainly composed of hydrocarbons, are reintroduced into the heating chamber 34 as fuel.

[0038] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Although this specification describes embodiments, not every embodiment contains only one technical solution. This method of description is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A skid-mounted pyrolysis device for forestry and agricultural biomass, characterized in that, The system includes a heat supply chamber (3) and a pyrolysis furnace (2). The pyrolysis furnace (2) includes, from top to bottom, a first top cover (21), a pyrolysis wall (22), and a first base (23). The heat supply chamber (3) includes, from top to bottom, a second top cover (31), a heat transfer wall (32), and a second base (33). The second top cover (31) is located on the vertical center line of the first top cover (21). The heat transfer wall (32) encloses and forms a heating cavity (34). The pyrolysis wall (22) is located around the heat transfer wall (32) to form a circumferential pyrolysis cavity (24). The first top cover (21) The first base (23) is connected to a sand feeding mechanism (26) for conveying solid particles into the pyrolysis chamber (24), and a first air inlet mechanism (25) for inputting oxygen-free gas into the pyrolysis chamber (24). The solid particles form a fluidized bed in the pyrolysis chamber (24). The heat supply chamber (3) is used to generate heat and transfer heat to the fluidized bed. The lower part of the pyrolysis furnace (2) is connected to a raw material feeding mechanism (1) for inputting biomass raw materials into the pyrolysis chamber (24), and the first top cover (21) is connected to a production mechanism (4) for outputting gaseous intermediates to the outside of the pyrolysis furnace (2).

2. The skid-mounted pyrolysis device for forestry and agricultural biomass according to claim 1, characterized in that, A heat transfer pipe (38) is provided between the heat transfer wall (32) and the second base (33). The heat transfer pipe (38) includes a connected bend (381) and a vertical pipe (382) from top to bottom. The side opening of the bend (381) is connected to the pyrolysis chamber (24). The bottom opening of the vertical pipe (382) is downward and passes through the second base (33). The first base (23) is provided with a jetting mechanism (27) for spraying high-pressure oxygen-free gas. The jetting nozzle of the jetting mechanism (27) is aligned with the bottom opening of the vertical pipe (382).

3. The skid-mounted pyrolysis device for forestry and agricultural biomass according to claim 1, characterized in that, The first air intake mechanism (25) includes a first air intake pipe (251) and an air intake head (252). The air intake head (252) protrudes from the top surface of the first base (23). The opening of the air intake head (252) for inputting oxygen-free gas into the pyrolysis chamber (24) faces obliquely downward.

4. The skid-mounted pyrolysis device for forestry and agricultural biomass according to claim 1, characterized in that, The lower outer side of the pyrolysis wall (22) is surrounded by a protrusion (28), and the lower part of the pyrolysis wall (22) is provided with a through-hole. The interior of the protrusion (28) is a cavity that communicates with the pyrolysis chamber (24) through the through-hole. The first base (23) serves as the inner bottom surface of the protrusion (28). The inner bottom surface of the protrusion (28) is connected to a first air intake mechanism (25). The vertical cross-section of the pyrolysis furnace (2) and the protrusion (28) is stepped. The side wall of the protrusion (28) is connected to a second air intake mechanism (29) for introducing oxygen-free gas into the interior of the protrusion (28).

5. The skid-mounted pyrolysis device for forestry and agricultural biomass according to claim 1, characterized in that, The second top cover (31) is connected to a third air intake mechanism (35) for inputting air into the heating chamber (34), the second top cover (31) is connected to a fuel intake mechanism (36) for inputting fuel into the heating chamber (34), and the second top cover (31) is connected to an exhaust mechanism (37) for outputting combustion exhaust gas out of the heating chamber (34).

6. A skid-mounted pyrolysis device for forestry and agricultural biomass according to claim 5, characterized in that, The exhaust mechanism (37) includes a centrifugal separator assembly (371) and an exhaust pipe (372). One end of the centrifugal separator assembly (371) is connected to the second top cover (31) and communicates with the heating chamber (34), and the other end is connected to the exhaust pipe (372). The exhaust pipe (372) is connected to a burnout mechanism for burning off the combustion exhaust gas. The burnout mechanism is connected to the pyrolysis chamber (24) to assist in creating an oxygen-free condition in the pyrolysis chamber (24).

7. A skid-mounted pyrolysis device for forestry and agricultural biomass according to claim 5, characterized in that, A temperature sensor (351) is provided on the second top cover (31) near the third air intake mechanism (35).

8. A skid-mounted pyrolysis device for forestry and agricultural biomass according to claim 1, characterized in that, The output mechanism (4) includes an output pipe (41), a first centrifugal separator (42), and a second centrifugal separator (43). One end of the output pipe (41) is connected to the first top cover (21) and communicates with the pyrolysis chamber (24), and the other end is connected to the first centrifugal separator (42). The first centrifugal separator (42) and the second centrifugal separator (43) are connected by a pipe. The lower end of the first centrifugal separator (42) is connected to the first top cover (21) and communicates with the pyrolysis chamber (24). The second centrifugal separator (43) is connected to the pyrolysis chamber (24).

9. A skid-mounted pyrolysis device for forestry and agricultural biomass according to claim 5 or 8, characterized in that, The production mechanism (4) also includes a transmission pipe (44), one end of which is connected to a second centrifugal separator (43), and the other end is connected to a condensation mechanism for condensing the gaseous intermediate into liquid oil. The condensation mechanism is connected to a fuel injection mechanism (36) for adding the uncondensed gaseous intermediate into the heating chamber (34).

10. A skid-mounted pyrolysis device for forestry and agricultural biomass according to claim 1, characterized in that, The raw material feeding mechanism (1) includes a crushing mechanism for crushing biomass raw materials.

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