Granulation system

Abstract

The utility model provides a kind of granulating system. Granulating system includes granulating device and recovery device, and granulating device includes cylinder, and cylinder includes feed end and discharge end, and exhaust port and recovery port are set on cylinder, recovery port is close to feed end and set, and exhaust port is close to discharge end and set;Recovery device is communicated with exhaust port and recovery port;Recovery device includes recovery body, and recovery body is close to feed end and set.The utility model solves the problem of low tar recovery rate in tail gas in the prior art granulating system.

Description

Technical Field

[0001] This utility model relates to the field of material processing technology, and more specifically, to a granulation system. Background Technology

[0002] In the production process of battery anode materials, the granulation process of the anode active material is a crucial step. The high-temperature granulation process releases a lot of exhaust gas, which usually contains volatile tar (tar vapor) and other organic compounds. This not only causes potential environmental pollution, but also leads to material waste and reduces production efficiency and economy if the tar in the exhaust gas cannot be effectively recovered and utilized.

[0003] In current granulation processes, when exhaust gases are directly emitted or treated through simple filtration devices, the tar vapors condense into liquid during cooling, making recovery difficult and ultimately resulting in waste. This not only increases waste disposal costs but also reduces the overall utilization rate of materials, violating the principles of green production.

[0004] In other words, existing granulation systems suffer from low tar recovery rates in exhaust gases.

[0005] It should be noted that the information provided in this section is merely background information relevant to this disclosure and is not necessarily prior art. Utility Model Content

[0006] The main objective of this invention is to provide a granulation system to solve the problem of low tar recovery rate in exhaust gas in existing granulation systems.

[0007] To achieve the above objectives, this utility model provides a granulation system, comprising: a granulation device, the granulation device including a cylinder, the cylinder including a feed end and a discharge end, the cylinder having an exhaust port and a recovery port, the recovery port being located near the feed end and the exhaust port being located near the discharge end; a recovery device, the recovery device being connected to the exhaust port and the recovery port; the recovery device including a recovery body, the recovery body being located near the feed end.

[0008] Furthermore, the recycling device also includes a first pipe, which includes a first section and a second section connected in sequence, the first section and the second section being set at a preset angle, the first section being connected to the exhaust port, and the second section being connected to the recycling body.

[0009] Furthermore, the lowest point at the connection between the first and second segments is located above the highest point at the connection between the second segment and the recovery body.

[0010] Furthermore, the recovery body includes a first auxiliary port, and a second section is connected to the first auxiliary port; the minimum distance from the lowest point at the connection between the first and second sections to the cylinder is greater than the minimum distance from the first auxiliary port to the cylinder; the second section includes a first end and a second end, the first end is connected to the first section, the second end is connected to the first auxiliary port, and the minimum distance from the first end to the cylinder is greater than the minimum distance from the second end to the cylinder.

[0011] Furthermore, the orthographic projection of the connection point between the first and second sections on the cylinder body is located between the exhaust port and the recovery port.

[0012] Furthermore, the first section and the cylinder have a first included angle, which is greater than 45° and less than 90°.

[0013] Furthermore, the first section includes a first sub-pipe section and a second sub-pipe section connected in sequence. The first sub-pipe section is connected to the exhaust port and is perpendicular to the cylinder. The second sub-pipe section is set at an angle to the first sub-pipe section. The port of the second sub-pipe section away from the first sub-pipe section is connected to the second section. The port of the second sub-pipe section away from the first sub-pipe section is offset from the exhaust port along the axial direction of the cylinder.

[0014] Furthermore, the recycling body includes a filtration section and an enrichment section connected in sequence, with a first pipe connected to the filtration section and the enrichment section connected to the recycling port.

[0015] Furthermore, the filter section includes a multi-layered mesh structure, with adjacent mesh structures having different pore sizes.

[0016] Furthermore, the recycling body also includes a second auxiliary port; the recycling device also includes a second pipe, the two ends of which are connected to the second auxiliary port and the recycling port, respectively.

[0017] The granulation system using the technical solution of this utility model includes a granulation device and a recycling device. The granulation device includes a cylinder with a feed end and a discharge end. The cylinder has an exhaust port and a recycling port. The recycling port is located near the feed end, and the exhaust port is located near the discharge end. The recycling device is connected to the exhaust port and the recycling port. The recycling device includes a recycling body located near the feed end.

[0018] To improve tar recovery rate, the granulation system of this application includes a granulation device and a recovery device. The material is granulated at high temperature inside the granulation device's cylinder. The material is conveyed from the feed end to the discharge end of the cylinder. The exhaust gas generated during granulation is also discharged from the exhaust port at the discharge end to the connected recovery device. After condensation and treatment, the tar-containing recyclable material re-enters the cylinder through the recovery port, achieving full recovery of the exhaust gas and improving material utilization efficiency. The recovery device's recovery body is used to treat the exhaust gas and collect the tar-containing recyclable material into the recovery port. The recovery body is located adjacent to the feed end of the cylinder; that is, the exhaust gas entering the recovery body from the exhaust port must be conveyed from the discharge end to the feed end. This provides a longer flow path for the exhaust gas entering the recovery device, improving the condensation efficiency of the exhaust gas and thus further improving the utilization efficiency of the exhaust gas. Furthermore, it ensures that the tar-containing recyclable material is fully mixed with the material during high-temperature granulation, guaranteeing granulation consistency. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0020] Figure 1 A schematic diagram of an optional embodiment of the granulation system of this utility model is shown;

[0021] Figure 2 A schematic diagram of the structural distribution of an optional embodiment of the granulation system of this utility model is shown;

[0022] Figure 3 A schematic diagram of the structure of the recycling device in Embodiment 1 of the granulation system of this utility model is shown;

[0023] Figure 4 A schematic diagram of the recovery device of Embodiment 2 of the granulation system of this utility model is shown;

[0024] Figure 5 A schematic diagram of the recovery device of Embodiment 3 of the granulation system of this utility model is shown;

[0025] Figure 6 A schematic diagram of the recovery device of Embodiment 4 of the granulation system of this utility model is shown.

[0026] The above figures include the following reference numerals:

[0027] 01. Feed end; 02. Discharge end; 10. Granulation device; 11. Cylinder; 12. Exhaust port; 13. Recovery port; 20. Recovery device; 30. Recovery body; 31. Filter section; 32. First auxiliary port; 33. Mesh structure; 34. Enrichment section; 35. Second auxiliary port; 40. First pipe; 41. First section; 42. First sub-pipe section; 43. Second sub-pipe section; 44. Second section; 45. First end; 46. Second end; 50. Second pipe. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0030] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0031] To address the problem of low tar recovery rate in exhaust gas from existing granulation systems, this invention provides a granulation system.

[0032] like Figures 1 to 6 As shown, the granulation system includes a granulation device 10 and a recycling device 20. The granulation device 10 includes a cylinder 11, which has a feed end 01 and a discharge end 02. The cylinder 11 has an exhaust port 12 and a recycling port 13. The recycling port 13 is located near the feed end 01, and the exhaust port 12 is located near the discharge end 02. The recycling device 20 is connected to the exhaust port 12 and the recycling port 13. The recycling device 20 includes a recycling body 30, which is located near the feed end 01.

[0033] To improve the tar recovery rate, the granulation system of this application is equipped with a granulation device 10 and a recovery device 20. The material is granulated at high temperature inside the cylinder 11 of the granulation device 10. The material is transported from the feed end 01 of the cylinder 11 to the discharge end 02. The exhaust gas generated during the granulation process is also discharged from the exhaust port 12 of the discharge end 02 to the connected recovery device 20. The tar-containing recyclable material, after condensation and treatment, re-enters the cylinder 11 through the recovery port 13, realizing the full recovery of exhaust gas and improving the utilization efficiency of the material. The recovery body 30 of the recovery device 20 is used to treat the exhaust gas and collect the recyclable substances containing tar into the recovery port 13. The feed end 01 of the recovery body 30 is located adjacent to the cylinder 11. That is, the exhaust gas entering the recovery body 30 from the exhaust port 12 needs to be transported from the discharge end 02 to the feed end 01. On the one hand, this provides a longer flow path for the exhaust gas entering the recovery device 20, improves the condensation efficiency of the exhaust gas, and thus can further improve the utilization efficiency of the exhaust gas. On the other hand, it can make the recyclable substances containing tar fully mixed with the materials in the high-temperature granulation, ensuring the consistency of granulation.

[0034] It should be noted that the exhaust port 12 being located near the discharge end 02 means that the exhaust port 12 is adjacent to the discharge end 02, and the exhaust port 12 is closer to the discharge end 02 than the recovery port 13; the recovery port 13 being located near the feed end 01 means that the recovery port 13 is adjacent to the feed end 01, and the recovery port 13 is closer to the feed end 01 than the exhaust port 12.

[0035] The aforementioned recycling device 20 also includes a first pipe 40, which comprises a first section 41 and a second section 44 connected sequentially. The first section 41 and the second section 44 are set at a preset angle. The first section 41 is connected to the exhaust port 12, and the second section 44 is connected to the recycling body 30. The exhaust gas generated during the granulation process enters the first pipe 40 of the recycling device 20 from the exhaust port 12, passing sequentially through the first section 41 and the second section 44 at the preset angle. Because the first section 41 and the second section 44 are set at a preset angle, the exhaust gas will change direction between the first section 41 and the second section 44, thereby promoting the separation of recyclable substances from the exhaust gas. The exhaust gas enters the first section 41 and the second section 44 sequentially from the exhaust port 12 and then enters the recycling body 30, allowing the recycling body 30 to directly deliver the tar-containing recyclable substances into the cylinder 11, avoiding material loss caused by direct exhaust gas emission.

[0036] The recovery body 30 has at least two ports, namely a first auxiliary port 32 and a second auxiliary port 35. That is, after the exhaust gas passes through the first section 41, it enters the recovery body 30 through the first auxiliary port 32, which is connected to the second section 44. The second auxiliary port 35 is directly connected to the recovery port 13, so as to realize the recycling of materials.

[0037] like Figure 1As shown, the recovery body 30 includes a filter section 31 and an enrichment section 34 connected in sequence. A first pipe 40 is connected to the filter section 31, and the enrichment section 34 is connected to the recovery port 13. The filter section 31 and the enrichment section 34 of the recovery body 30 are vertically connected so that the filtered recyclable material falls into the enrichment section 34. Specifically, the exhaust gas enters the filter section 31 from the first auxiliary port 32 of the recovery body 30 along the first pipe 40, and the powder and tar in the exhaust gas are intercepted by the filter section 31. The second auxiliary port 35 is located at the bottom of the enrichment section 34 and is connected to the recovery port 13. The powder and tar fall from the filter section 31 into the enrichment section 34 by gravity, and then re-enter the cylinder 11 for granulation through the second auxiliary port 35 and the recovery port 13. This achieves efficient separation and recovery of powder and tar in the exhaust gas and reduces the energy consumption of exhaust gas treatment.

[0038] Specifically, the filter section 31 includes a multi-layer mesh structure 33, with adjacent mesh structures 33 having different pore sizes. Since powders of different sizes have different motion characteristics in the airflow, the different pore sizes of adjacent mesh structures 33 in the filter section 31 enable powders of different sizes to be effectively intercepted, thereby improving the separation efficiency of the filter section 31.

[0039] In some optional embodiments, the mesh structure 33 can have two, four, or more layers. The number of layers can be set as needed, provided that the airflow efficiency is not reduced. Furthermore, the multi-layered mesh structures 33 can be coaxially arranged or spaced in sheet-like patterns. Simultaneously, the aperture of adjacent mesh structures 33 can gradually decrease towards the center of the cylinder 11. This arrangement adapts to the gradual interception of powder particles; large powder particles can be intercepted first by the large-aperture mesh structures 33 further away from the center of the cylinder 11, while small powder particles can be intercepted later by the small-aperture mesh structures 33 closer to the center of the cylinder 11. Simultaneously, condensed tar condenses and falls upon contact with the mesh structures 33, ultimately achieving effective recovery of tar and powder.

[0040] like Figure 1 As shown, the recovery device 20 also includes a second pipe 50, the two ends of which are connected to the second auxiliary port 35 and the recovery port 13, respectively. The recovery device 20 is provided with the second pipe 50 located between the second auxiliary port 35 and the recovery port 13, which connects the path of powder and tar from the enrichment section 34 to the cylinder 11, realizing material circulation between the recovery device 20 and the granulation device 10, and improving the utilization rate of materials.

[0041] It is understood that in some embodiments, the first auxiliary port 32 and the second auxiliary port 35 may be opened on the side wall of the recycling body 30, or they may be two auxiliary pipes that extend outward from the recycling body 30. The port of one auxiliary pipe that is used to connect with the first pipe 40 is the first auxiliary port 32, and the port of the other auxiliary pipe that is used to connect with the second pipe 50 is the second auxiliary port 35.

[0042] Specifically, the connection between the first segment 41 and the second segment 44 is an arc-shaped structure. This arc-shaped connection design facilitates a smooth airflow transition, avoiding airflow turbulence caused by right-angle connections and significantly reducing the difficulty of exhaust gas treatment. Optionally, by adjusting the angle and length between the first segment 41 and the second segment 44, the material recovery requirements under different production conditions can be adapted.

[0043] like Figure 1 As shown, the direction of extension along the length of the cylinder 11 is set as the first direction, and the second direction is perpendicular to the first direction.

[0044] Optionally, the recycling device 20 also includes a first valve and a second valve, the first valve being located between the first pipes 40 and the second valve being located between the second pipes 50. During the granulation process, the first valve and the second valve are normally open.

[0045] Example 1

[0046] like Figure 3 The diagram illustrates the structure of the first pipe 40 of the granulation system according to Embodiment 1 of this application. The first segment 41 has a first included angle at its connection to the cylinder 11, and the first segment 41 has a second included angle at its connection to the second segment 44. In this embodiment, both the first and second included angles are 90°. It should be noted that the connection between the first segment 41 and the second segment 44 is arc-shaped. Here, the second included angle refers to the angle formed by the first segment 41 and the second segment 44 at locations other than the arc-shaped structure, excluding their connection point. In other words, the first segment 41 and the second segment 44 are substantially perpendicular.

[0047] Of course, the connection between the first segment 41 and the second segment 44 can also be a right angle, rather than an arc. No specific restrictions are imposed here. In this case, the second included angle is 90°.

[0048] In Embodiment 1, there is a second included angle between the first segment 41 and the second segment 44, which causes the flow direction of the exhaust gas to change during the flow in the first pipe 40, thus preventing the exhaust gas from rising continuously. At the same time as the direction is changed, the chance of the exhaust gas colliding with the inner wall of the first pipe 40 increases, which is conducive to the separation of tar and powder, reduces the possibility of recyclable substances being entrained in the exhaust gas, thereby reducing material loss and improving production efficiency and material utilization.

[0049] Under the influence of air pressure, the exhaust gas will normally move upward. The first section 41 has a relatively small blocking effect on the exhaust gas. After the exhaust gas turns and enters the second section 44, it will be intercepted by the cylinder wall of the second section 44, thus changing its direction of movement.

[0050] Example 2

[0051] The difference from Embodiment 1 is that the structure of the first pipe 40 is different.

[0052] like Figure 4 The diagram illustrates the structure of the first pipe 40 of the granulation system according to Embodiment 2 of this application. In this embodiment, the lowest point at the connection between the first segment 41 and the second segment 44 is located above the highest point at the connection between the second segment 44 and the recovery body 30. That is, the minimum distance from the lowest point at the connection between the first segment 41 and the second segment 44 to the cylinder 11 is greater than the minimum distance from the first auxiliary port 32 to the cylinder 11. This arrangement allows the second segment 44 to be tilted relative to the first segment 41, thereby facilitating the rapid flow of the separated tar-containing recyclable material into the recovery body 30.

[0053] It should be noted that the lowest point at the connection between the first segment 41 and the second segment 44 refers to the position closest to the cylinder 11 at the connection between the first segment 41 and the second segment 44; the highest point at the connection between the second segment 44 and the recovery body 30 refers to the position farthest from the cylinder 11 at the connection between the second segment 44 and the recovery body 30.

[0054] exist Figure 4 In the specific embodiment shown, the second segment 44 includes a first end 45 and a second end 46. The first end 45 is connected to the first segment 41, and the second end 46 is connected to the first auxiliary port 32. The minimum distance from the first end 45 to the cylinder 11 is greater than the minimum distance from the second end 46 to the cylinder 11. That is, the second segment 44 is inclined relative to the cylinder 11, so that the second segment 44 can perform preliminary collection of recyclable materials containing tar.

[0055] In Embodiment 2, the first angle between the first segment 41 and the cylinder 11 is a right angle. The connection between the first segment 41 and the second segment 44 is an arc-shaped structure, which can also be understood as a rounded transition at the connection between the first segment 41 and the second segment 44. Except for the arc-shaped structure, the first segment 41 is generally parallel to the second direction, which can also be understood as the first segment 41 extending along the second direction as a whole. The second segment 44 is inclined relative to the first direction, so that when the exhaust gas enters the second segment 44 from the first segment 41, the tar and powder particles condensed in the exhaust gas are accelerated due to the gravity difference and eventually slide smoothly into the recovery body 30.

[0056] Of course, the connection between the first segment 41 and the second segment 44 can be an angled transition, that is, the first segment 41 and the second segment 44 form an angle, and there are no specific restrictions here.

[0057] Example 3

[0058] The difference from Embodiment 1 is that the structure of the first pipe 40 and the positional relationship between the first pipe 40 and the cylinder 11 are different.

[0059] like Figure 5 The diagram illustrates the structure of the first pipe 40 of the granulation system according to Embodiment 3 of this application. A first angle is formed between the first section 41 and the cylinder 11, the first angle being greater than 45° and less than 90°, and the orthographic projection of the connection point between the first section 41 and the second section 44 onto the cylinder 11 is located between the exhaust port 12 and the recovery port 13.

[0060] In Embodiment 3, the first segment 41 is inclined relative to the second direction. In this case, the height of the lowest point at the connection between the first segment 41 and the second segment 44 in this embodiment is higher than the height of the highest point of the first auxiliary port 32 along the second direction, and the orthographic projection of the connection between the first segment 41 and the second segment 44 is located between the exhaust port 12 and the recovery port 13.

[0061] It should be noted that the highest point of the first auxiliary port 32 refers to the position where the first auxiliary port 32 is farthest from the cylinder 11.

[0062] In Embodiment 3, the inclined design of the first section 41 can more effectively guide the exhaust gas generated during the granulation process directly into the recovery device 20, reducing the overall residence time of the exhaust gas in the first pipe 40 and preventing blockage by settled powder and condensed tar, thereby improving the efficiency of material recovery. This embodiment, by optimizing the layout of the first pipe 40, can reduce system pressure fluctuations caused by poor exhaust gas emission and untimely material recovery during the granulation process, improve the operational stability of the entire granulation system, and reduce the need for maintenance and adjustment.

[0063] Example 4

[0064] The difference from Example 3 is that the structure of the first segment 41 is different.

[0065] like Figure 6The diagram illustrates the structure of the first pipe 40 of the granulation system according to Embodiment 4 of this application. The difference from Embodiment 3 is that the first segment 41 includes a first sub-pipe segment 42 and a second sub-pipe segment 43 connected sequentially. The first sub-pipe segment 42 is connected to the exhaust port 12 and is perpendicular to the cylinder 11. The second sub-pipe segment 43 is set at an angle to the first sub-pipe segment 42. The port of the second sub-pipe segment 43 furthest from the first sub-pipe segment 42 is connected to the second segment 44. The port of the second sub-pipe segment 43 furthest from the first sub-pipe segment 42 is offset from the exhaust port 12 along the axial direction of the cylinder 11. Alternatively, the orthographic projection of the port of the second sub-pipe segment 43 furthest from the first sub-pipe segment 42 on the cylinder 11 can be understood as being spaced apart from the exhaust port 12.

[0066] In Embodiment 4, the first section 41 is divided into a first sub-pipe section 42 and a second sub-pipe section 43 connected in sequence. The first sub-pipe section 42, which is connected to the exhaust port 12, is perpendicular to the cylinder 11. The second sub-pipe section 43 is set at an angle to the first sub-pipe section 42. That is, when the exhaust gas flows in the first section 41, it will turn once, and when it flows from the first section 41 to the second section 44, it will turn a second time. Multiple turns are beneficial for the exhaust gas to collide with the inner wall of the pipe, which in turn is beneficial for the separation of powder and tar from the exhaust gas. The first end 45 is higher than the second end 46 in the second direction. This arrangement is beneficial for the separated tar and other substances to flow into the recovery body 30 under the action of gravity.

[0067] In Embodiment 4, this embodiment ensures that the change in the exhaust gas flow path not only helps with material separation, but also allows recyclable substances in the exhaust gas to slide more easily along the inclined surface of the first pipe 40 to the vicinity of the first auxiliary port 32 under the action of gravity, thereby increasing the chance of recovery and reducing material loss.

[0068] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0069] To improve tar recovery rate, the granulation system of this application is equipped with a granulation device 10 and a recovery device 20. The material is granulated at high temperature inside the cylinder 11 of the granulation device 10. The material is transported from the feed end of the cylinder 11 to the discharge end 02. The exhaust gas generated during the granulation process is also discharged from the exhaust port 12 of the discharge end 02 to the connected recovery device 20. The tar-containing recyclable material, after condensation and treatment, re-enters the cylinder 11 through the recovery port 13, realizing full recovery of exhaust gas and improving the utilization efficiency of material. The recovery body 30 of the recovery device 20 is used to treat the exhaust gas and collect the recyclable substances containing tar into the recovery port 13. The feed end 01 of the recovery body 30 is located adjacent to the cylinder 11. That is, the exhaust gas entering the recovery body 30 from the exhaust port 12 needs to be transported from the discharge end 02 to the feed end 01. On the one hand, this provides a longer flow path for the exhaust gas entering the recovery device 20, improves the condensation efficiency of the exhaust gas, and thus can further improve the utilization efficiency of the exhaust gas. On the other hand, it can make the recyclable substances containing tar fully mixed with the materials in the high-temperature granulation, ensuring the consistency of granulation.

[0070] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0071] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0072] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0073] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A granulation system, characterized in that, include: A granulation device (10) includes a cylinder (11), the cylinder (11) includes a feed end (01) and a discharge end (02), the cylinder (11) is provided with an exhaust port (12) and a recovery port (13), the recovery port (13) is located close to the feed end (01), and the exhaust port (12) is located close to the discharge end (02); A recovery device (20) is connected to the exhaust port (12) and the recovery port (13); The recycling device (20) includes a recycling body (30) which is disposed close to the feed end (01).

2. The granulation system according to claim 1, characterized in that, The recycling device (20) further includes a first pipe (40), which includes a first section (41) and a second section (44) connected in sequence. The first section (41) and the second section (44) are set at a preset angle. The first section (41) is connected to the exhaust port (12), and the second section (44) is connected to the recycling body (30).

3. The granulation system according to claim 2, characterized in that, The lowest point at the junction of the first segment (41) and the second segment (44) is located above the highest point at the junction of the second segment (44) and the recycling body (30).

4. The granulation system according to claim 3, characterized in that, The recycling body (30) includes a first auxiliary port (32), and the second section (44) is connected to the first auxiliary port (32); The minimum distance from the lowest point at the junction of the first segment (41) and the second segment (44) to the cylinder (11) is greater than the minimum distance from the first auxiliary port (32) to the cylinder (11); The second segment (44) includes a first end (45) and a second end (46). The first end (45) is connected to the first segment (41), and the second end (46) is connected to the first auxiliary port (32). The minimum distance from the first end (45) to the cylinder (11) is greater than the minimum distance from the second end (46) to the cylinder (11).

5. The granulation system according to claim 2, characterized in that, The connection point of the first segment (41) and the second segment (44) is projected onto the cylinder (11) between the exhaust port (12) and the recovery port (13).

6. The granulation system according to claim 5, characterized in that, The first segment (41) and the cylinder (11) have a first included angle, which is greater than 45° and less than 90°.

7. The granulation system according to claim 5, characterized in that, The first segment (41) includes a first sub-pipe segment (42) and a second sub-pipe segment (43) connected in sequence. The first sub-pipe segment (42) is connected to the exhaust port (12) and is perpendicular to the cylinder (11). The second sub-pipe segment (43) is set at an angle to the first sub-pipe segment (42). The port of the second sub-pipe segment (43) away from the first sub-pipe segment (42) is connected to the second segment (44). The port of the second sub-pipe segment (43) away from the first sub-pipe segment (42) and the exhaust port (12) are offset from each other along the axial direction of the cylinder (11).

8. The granulation system according to any one of claims 2 to 7, characterized in that, The recycling body (30) includes a filtration section (31) and an enrichment section (34) connected in sequence. The first pipe (40) is connected to the filtration section (31), and the enrichment section (34) is connected to the recycling port (13).

9. The granulation system according to claim 8, characterized in that, The filter section (31) includes a multi-layer mesh structure (33), with different pore sizes in adjacent mesh structures (33).

10. The granulation system according to any one of claims 2 to 7, characterized in that, The recovery body (30) also includes a second auxiliary port (35); The recycling device (20) further includes a second pipe (50), the two ends of which are connected to the second auxiliary port (35) and the recycling port (13), respectively.

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