Granulation system

Abstract

The utility model provides a kind of granulating system.The granulating system includes granulating device, recycling device, first pipeline and second pipeline, and granulating device includes cylinder body, cylinder body includes feed end and discharge end, and exhaust port, recycling port and discharge port are set up on cylinder body;Recycling port is close to feed end setting, and discharge port and exhaust port are close to discharge end setting;Recycling device is located in the upside of granulating device, and recycling device at least includes first port, second port and waste gas outlet, and the both ends of first pipeline are connected with first port and exhaust port respectively, and the both ends of second pipeline are connected with second port and recycling port respectively.The utility model solves the problem of low tail gas recovery rate in the prior art granulating system.

Description

Technical Field

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

[0002] In the production of battery anode materials, the granulation and modification process is a crucial step in improving material performance. During the high-temperature granulation process in the granulation kettle, a significant amount of exhaust gas is generated. Directly releasing this exhaust gas not only wastes materials but also pollutes the environment, failing to meet the requirements of low-carbon and environmentally friendly practices. Furthermore, the high-temperature exhaust gas generated during granulation can carry away powder particles from the material, leading to material loss and impacting the production efficiency and cost of battery products. In addition, the tar vapor in the exhaust gas cannot be effectively recovered, causing it to condense and clog the exhaust gas pipes, reducing the stability of the granulation system.

[0003] In other words, existing granulation systems suffer from low exhaust gas recovery rates.

[0004] 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

[0005] The main objective of this invention is to provide a granulation system to solve the problem of low exhaust gas recovery rate in existing granulation systems.

[0006] 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, and an exhaust port, a recovery port and a discharge port provided on the cylinder; the recovery port is located near the feed end, and the discharge port and the exhaust port are located near the discharge end; a recovery device, a first pipe and a second pipe, the recovery device being located on the upper side of the granulation device, the recovery device including at least a first port, a second port and an exhaust outlet, the two ends of the first pipe being connected to the first port and the exhaust port respectively, and the two ends of the second pipe being connected to the second port and the recovery port respectively.

[0007] Furthermore, the first pipe includes a first section and a second section connected in sequence, with the connection between the first section and the second section set at an angle, the first section being connected to the exhaust port, and the second section being connected to the first port.

[0008] Furthermore, the orthographic projection of the second section's port, which is farther from the first section, onto the cylinder body is located at the midpoint of the cylinder body along its length, on the side farther from the exhaust port.

[0009] Furthermore, along the length of the cylinder, the length of the second segment is greater than or equal to one-third of the length of the cylinder.

[0010] Furthermore, the recovery device includes: a filter chamber having a filter space and a first port and an exhaust gas outlet communicating with the filter space; and a filter assembly located within the filter space, wherein the filter assembly at least blocks the first port.

[0011] Furthermore, the filter assembly includes multiple cylindrical filter screens, which are coaxially nested together, and the radial diameter of the holes in the cylindrical filter screens gradually decreases towards the central axis of the filter assembly.

[0012] Furthermore, the filter chamber has a cavity structure, with the first port and the exhaust outlet located on the side wall of the cavity structure, and the first port and the exhaust outlet located on opposite sides of the central axis of the cavity structure.

[0013] Furthermore, the filter assembly also includes a baffle plate, which is inclinedly disposed below the cylindrical filter screen, with the bottom end of the baffle plate close to the bottom wall opening of the filter chamber.

[0014] Furthermore, the recycling device also includes an enrichment component, which includes an enrichment space and a second port located on the bottom wall of the enrichment space, the second port being connected to the recycling port.

[0015] Furthermore, the granulation device includes a screw and a drive mechanism, with the screw passing through the cylinder and the drive mechanism being connected to the screw drive mechanism.

[0016] The granulation system using the technical solution of this utility model includes a granulation device, a recovery device, a first pipe, and a second pipe. The granulation device includes a cylinder with an inlet end and an outlet end. The cylinder has an exhaust port, a recovery port, and an outlet. The recovery port is located near the inlet end, and the outlet and exhaust port are located near the outlet end. The recovery device is located on the upper side of the granulation device and includes at least a first port, a second port, and an exhaust outlet. The two ends of the first pipe are connected to the first port and the exhaust port, respectively, and the two ends of the second pipe are connected to the second port and the recovery port, respectively.

[0017] The granulation device and the recycling device of this application form a connected loop. Specifically, the material is fed into the cylinder from the feed end, modified, and then discharged from the discharge end. To improve resource utilization, the exhaust gas generated during the material modification process is discharged upward from the exhaust port at the discharge end of the cylinder and enters the recycling device through the first pipe and the first port. After being processed by the recycling device, the recovered substances in the exhaust gas fall downward into the cylinder through the recovery port via the second pipe, and the waste gas in the exhaust gas is discharged from the waste gas outlet. This achieves the classification and recycling of the exhaust gas, significantly improving product production efficiency while effectively avoiding environmental pollution. Attached Figure Description

[0018] 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:

[0019] Figure 1 A schematic diagram of an optional embodiment of the granulation system of this utility model is shown;

[0020] Figure 2 A schematic diagram of the structural distribution of an optional embodiment of the granulation system of this utility model is shown;

[0021] Figure 3 The diagram shows the external and perspective structural schematic of the recycling device of an optional embodiment of the granulation system of this utility model;

[0022] Figure 4 It shows Figure 3 A three-dimensional schematic diagram of the recycling unit;

[0023] Figure 5 A schematic diagram of the structure of a granulation apparatus of an optional embodiment of the granulation system of this utility model is shown.

[0024] The above figures include the following reference numerals:

[0025] 10. Granulation device; 11. Exhaust port; 12. Recovery port; 13. Discharge port; 14. Cylinder; 15. Screw; 16. Drive mechanism; 17. Feed port; 20. Recovery device; 21. First port; 22. Second port; 23. Exhaust gas outlet; 24. Filter chamber; 25. Filter assembly; 251. Cylindrical filter screen; 252. Baffle plate; 26. Enrichment assembly; 27. First pipeline; 271. First section; 272. Second section; 273. First valve; 28. Second pipeline; 281. Second valve; 30. Granulation section; 40. Depolymerization section. Detailed Implementation

[0026] 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.

[0027] 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.

[0028] 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.

[0029] To address the problem of low exhaust gas recovery rate in existing granulation systems, this invention provides a granulation system.

[0030] like Figures 1 to 5 As shown, the granulation system includes a granulation device 10, a recovery device 20, a first pipe 27, and a second pipe 28. The granulation device 10 includes a cylinder 14, which has a feed end and a discharge end. The cylinder 14 is provided with an exhaust port 11, a recovery port 12, and a discharge port 13. The recovery port 12 is located near the feed end, and the discharge port 13 and the exhaust port 11 are located near the discharge end. The recovery device 20 is located on the upper side of the granulation device 10. The recovery device 20 includes at least a first port 21, a second port 22, and an exhaust outlet 23. The two ends of the first pipe 27 are respectively connected to the first port 21 and the exhaust port 11, and the two ends of the second pipe 28 are respectively connected to the second port 22 and the recovery port 12.

[0031] The granulation device 10 and the recycling device 20 of this application form a connected loop. Specifically, the material is fed into the cylinder 14 from the feed end, modified, and then discharged from the discharge port 13 at the discharge end. To improve resource utilization, the exhaust gas generated during the material modification process is discharged upward from the exhaust port 11 at the discharge end of the cylinder 14, and enters the recycling device 20 through the first pipe 27 and the first port 21. After being processed by the recycling device 20, the recovered substances in the exhaust gas fall downward into the cylinder 14 through the second pipe 28 and the recovery port 12, and the waste gas in the exhaust gas is discharged from the waste gas outlet 23. This achieves the classification and recycling of the exhaust gas, greatly improves product production efficiency, and effectively avoids environmental pollution.

[0032] It should be noted that after being treated by the recovery device 20, the exhaust gas is separated into gaseous substances and recovered substances. The gaseous substances are waste gas, and the recovered substances are condensed powder and tar.

[0033] The aforementioned first pipe 27 includes a first section 271 and a second section 272 connected sequentially. The connection between the first section 271 and the second section 272 is at an angle. The first section 271 is connected to the exhaust port 11, and the second section 272 is connected to the first port 21. The first section 271 and the second section 272 of the first pipe 27 are connected sequentially, and the connection between the first section 271 and the second section 272 is not a straight transition, but rather a predetermined angle. When the exhaust gas passes through the connection between the first section 271 and the second section 272, the airflow is obstructed, causing the upward path of the exhaust gas to change. This arrangement can reduce the temperature of the exhaust gas entering the second section 272, accelerate the condensation of tar vapor in the exhaust gas in the recovery device 20, improve the recovery efficiency, and at the same time avoid tar discharge that would pollute the environment.

[0034] Of course, the angle at the connection between the first segment 271 and the second segment 272 is not specifically limited and can be changed according to the actual setting of the first pipe 27 and the degree of resistance to the exhaust gas. The first direction extends along the length of the cylinder 14, and the second direction extends along the discharge direction of the outlet 13 and is perpendicular to the first direction. The angle α formed between the first and second directions, i.e., the angle between the extension lines of the first segment 271 and the second segment 272, can be from 5° to 175°. Optionally, for example, α can be 5°, 10°, 15°, 20°, 30°, 40°, 60°, 80°, 100°, 120°, 160°, 170°, 175°, or within any two of the above values. Preferably, α can be from 75° to 95°. Figure 1 In the embodiment shown, the included angle α formed between the first direction and the second direction, that is, the included angle between the extension lines of the first segment 271 and the second segment 272, is 90°.

[0035] In order to ensure that the recycled material is fully mixed with the material in the cylinder 14, the second section 272 needs to have a certain length so that the recycled material can enter the cylinder 14 and be fully mixed and granulated with the material in the cylinder 14. Specifically, the orthographic projection of the port of the second section 272 away from the first section 271 on the cylinder 14 is located at the midpoint of the length direction of the cylinder 14 on the side away from the exhaust port 11.

[0036] Specifically, along the length of the cylinder 14, the length of the second section 272 is greater than or equal to one-third of the length of the cylinder 14. When the second section 272 is longer, the exhaust gas has sufficient length in the first pipe 27 to allow the tar vapor to condense in a timely manner.

[0037] In such Figure 1 , Figure 3 and Figure 4In the illustrated embodiment, the recovery device 20 further includes an enrichment component 26, which includes an enrichment space and a second port 22 located on the bottom wall of the enrichment space, the second port 22 being connected to the recovery port 12. Powder and condensed tar are discharged from the bottom wall opening of the filter chamber 24 by gravity and first enter the enrichment space, then are discharged to the recovery port 12 via the second port 22.

[0038] In such Figure 1 In the illustrated embodiment, the granulation system further includes a first valve 273 and a second valve 281. During the granulation process, the first valve 273 and the second valve 281 can be opened as needed to allow the exhaust gas to be separated by the recovery device 20 and to transport the required recovered material to the cylinder 14. In the first pipe 27, one end of the first section 271 is connected to the exhaust port 11, and the other end of the first section 271 is equipped with a first valve 273 connected to one end of the second section 272. In the second pipe 28, one end of the second pipe 28 is connected to the second port 22, and the other end of the second pipe 28 is equipped with a second valve 281 connected to the recovery port 12.

[0039] In such Figure 1 , Figure 3 and Figure 4 In the illustrated embodiment, the recovery device 20 further includes a filter chamber 24 and a filter assembly 25. The filter chamber 24 has a filtration space, a first port 21 communicating with the filtration space, and an exhaust gas outlet 23. The filter assembly 25 is located within the filtration space and at least blocks the first port 21. The recovery device 20 consists of the filter chamber 24 and the filter assembly 25. The filter assembly 25 is located in the filtration space. The exhaust gas enters the filtration space from the first port 21. The powder and tar separated by the filter assembly 25 are discharged from the opening in the bottom wall of the filter chamber 24, while the exhaust gas is discharged from the exhaust gas outlet 23, ensuring that the recovered substances in the exhaust gas can be effectively intercepted and collected.

[0040] It should be noted that the filter assembly 25 at least blocks the first port 21 to ensure that the exhaust gas entering the filter space through the first port 21 can immediately come into contact with the filter assembly 25 to achieve exhaust gas filtration.

[0041] At the same time, the exhaust gas outlet 23 is also partially blocked by the filter assembly 25. In other words, after the exhaust gas enters the filter chamber 24 from the exhaust gas outlet 23, it can be separated by the filter assembly 25, which effectively prevents the exhaust gas that has not been fully separated from carrying the recovered material out and reduces material loss.

[0042] Specifically, the filter chamber 24 has a cavity structure, with the first port 21 and the exhaust gas outlet 23 located on the side wall of the cavity structure, and on opposite sides of the central axis of the cavity structure. By setting the filter chamber 24 as a cavity structure, the exhaust gas recovery process can be optimized. The first port 21 and the exhaust gas outlet 23 are located on opposite sides of the central axis of the side wall of the cavity structure, which conforms to the airflow path of the exhaust gas and is more conducive to the discharge of the exhaust gas after separation, thereby improving the separation efficiency. At the same time, the bottom wall opening of the filter chamber 24 is connected to the second port 22, allowing the recovered material to be discharged smoothly and naturally from the bottom wall opening of the filter chamber 24, avoiding the residue or blockage of powder and condensed tar, and ensuring the continuity of material recovery.

[0043] like Figure 3 As shown, the filter assembly 25 includes multiple cylindrical filter screens 251, which are coaxially nested together. The radial diameter of the pores of the cylindrical filter screens 251 gradually decreases towards the central axis of the filter assembly 25. The multiple cylindrical filter screens 251 are arranged sequentially towards the central axis of the filter chamber 24, forming a multi-stage filtration structure. This design not only optimizes the separation effect of the filter assembly 25 but also simplifies the layout of the recovery device 20. Specifically, the coaxial nesting of multiple cylindrical filter screens 251 facilitates the smooth flow of exhaust gas, avoids airflow blockage, and improves the efficiency of gas-solid separation.

[0044] When the exhaust gas passes through the cylindrical filter 251, the powder and tar vapor carried in the exhaust gas will separate when they collide with the cylindrical filter 251.

[0045] As the distance from the central axis of the filter assembly 25 gradually decreases, the pore size of the cylindrical filter screen 251 correspondingly decreases, enabling the filter assembly 25 to effectively capture powder particles of different sizes, preventing powder from escaping with the exhaust gas and thus significantly improving the material recovery rate. Specifically, when the exhaust gas enters the filter chamber 24, it first passes through the outer cylindrical filter screen 251 with a larger pore size, where larger powder particles and condensed tar are initially trapped. Subsequently, the exhaust gas continues to flow towards the central axis of the filter chamber 24, contacting the inner cylindrical filter screen 251 with a smaller pore size. This progressively refined separation process ensures that the powder can be effectively captured, while the tar vapor in the exhaust gas is also fully intercepted by the cylindrical filter screen 251 after condensation in the filter chamber 24.

[0046] It should be noted that the cross-sectional area of ​​the cylindrical filter screen 251 closest to the central axis, perpendicular to the central axis, is larger than the area of ​​the bottom wall opening of the filter chamber 24.

[0047] Optionally, the number of multiple cylindrical filter screens 251 can be two or four layers; no specific limitation is made here. By adjusting the number of cylindrical filter screens 251, different exhaust gas separation requirements can be met.

[0048] The filter assembly 25 also includes a guide plate 252, which is inclinedly disposed below the cylindrical filter screen 251, with its bottom end close to the bottom wall opening of the filter chamber 24. The guide plate 252 is inclined below the cylindrical filter screen 251, meaning it surrounds the bottom of the cylindrical filter screen 251, with its top end close to the side wall of the filter chamber 24 and its bottom end close to the bottom wall opening of the filter chamber 24. The inclined guide plate 252 accelerates the recovery process, promotes the smooth flow of powder and condensed tar, and prevents blockage or accumulation of powder and condensed tar during the recovery process. Therefore, after being intercepted by the cylindrical filter screen 251, the powder and condensed tar slide down onto the inclined guide plate 252 due to gravity, and finally enter the second port 22 through the bottom wall opening of the filter chamber 24. This simplifies the recovery path of the recovered material and realizes the recycling of the material.

[0049] In such Figure 1 In the illustrated embodiment, the granulation device 10 includes a screw 15 and a drive mechanism 16. The screw 15 passes through the cylinder 14, and the drive mechanism 16 is drivenly connected to the screw 15. The screw 15 is provided inside the cylinder 14 of the granulation device 10, and the drive mechanism 16 drives the screw 15 to rotate inside the cylinder 14, thereby realizing continuous material conveying and modification, improving the continuity of the granulation process and the uniformity of material processing.

[0050] Specifically, the screw 15 is rotatably disposed inside the cylinder 14. The screw 15 includes a granulation section 30 and a depolymerization section 40. The depolymerization section 40 is closer to the discharge port 13 than the granulation section 30. The exhaust port 11 is disposed at least partially covering the depolymerization section 40.

[0051] By providing a granulation section 30 on the screw 15, the material fed from the feed inlet 17 can be uniformly granulated under the action of the granulation section 30. A deagglomeration section 40 on the screw 15 can deagglomerate the granulated material, allowing agglomerated particles to be separated and dispersed, reducing the proportion of agglomerated particles and facilitating uniform mixing in subsequent processes. Since tar gas is easily generated after agglomeration of particles, the exhaust port 11 is designed to at least partially cover the deagglomeration section 40 to facilitate the discharge of tar gas generated during the deagglomeration process.

[0052] Optionally, the granulation system also includes a metering conveyor that can continuously convey materials to the granulation unit 10.

[0053] Optionally, the granulation system also includes a cooling device for cooling the high-temperature modified material discharged from the granulation unit 10.

[0054] Specifically, in one embodiment not shown, the cooling device is connected to a cooling cylinder, enabling rapid cooling of the granulated material, shortening the cooling time, and improving production efficiency. By circulating a cooling medium (such as cooling water) outside the cooling cylinder, the heat from the granulated material can be quickly removed, achieving material cooling.

[0055] Optionally, the granulation system also includes a tail gas emission device, which is connected to the exhaust gas outlet 23 of the recovery device 20 for treating the exhaust gas. For example, in an embodiment not shown, the exhaust gas discharged from the exhaust gas outlet 23 can meet atmospheric emission requirements after passing through the tail gas emission device, a thermal oxidizer or a regenerative thermal oxidizer, and a sulfur denitrification device.

[0056] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0057] The granulation device 10 and the recycling device 20 of this application form a connected loop. Specifically, the material is fed into the cylinder 14 from the feed end, modified, and then discharged from the discharge port 13 at the discharge end. To improve resource utilization, the exhaust gas generated during the material modification process is discharged upward from the exhaust port 11 at the discharge end of the cylinder 14, and enters the recycling device 20 through the first pipe 27 and the first port 21. After being processed by the recycling device 20, the recovered substances in the exhaust gas fall downward into the cylinder 14 through the second pipe 28 and the recovery port 12, and the waste gas in the exhaust gas is discharged from the waste gas outlet 23. This achieves the classification and recycling of the exhaust gas, greatly improves product production efficiency, and effectively avoids environmental pollution.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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 (14), which has an inlet end and an outlet end. The cylinder (14) is provided with an exhaust port (11), a recovery port (12) and an outlet (13). The recovery port (12) is located near the inlet end, and the outlet (13) and the exhaust port (11) are located near the outlet end. The device includes a recycling device (20), a first pipe (27), and a second pipe (28). The recycling device (20) is located above the granulation device (10). The recycling device (20) includes at least a first port (21), a second port (22), and an exhaust outlet (23). The two ends of the first pipe (27) are connected to the first port (21) and the exhaust port (11), respectively. The two ends of the second pipe (28) are connected to the second port (22) and the recycling port (12), respectively.

2. The granulation system according to claim 1, characterized in that, The first pipe (27) includes a first section (271) and a second section (272) connected in sequence. The connection between the first section (271) and the second section (272) is set at an angle. The first section (271) is connected to the exhaust port (11), and the second section (272) is connected to the first port (21).

3. The granulation system according to claim 2, characterized in that, The orthographic projection of the port of the second segment (272) away from the first segment (271) on the cylinder (14) is located on the side away from the exhaust port (11) at the midpoint of the cylinder (14) in the length direction.

4. The granulation system according to claim 2, characterized in that, Along the length direction of the cylinder (14), the length of the second segment (272) is greater than or equal to one-third of the length of the cylinder (14).

5. The granulation system according to claim 1, characterized in that, The recycling device (20) includes: The filter chamber (24) has a filter space and a first port (21) communicating with the filter space and the exhaust gas outlet (23); A filter assembly (25) is located within the filter space and at least blocks the first port (21).

6. The granulation system according to claim 5, characterized in that, The filter assembly (25) includes a plurality of cylindrical filter screens (251), and the plurality of cylindrical filter screens (251) are coaxially sleeved, and the radial direction of the holes of the cylindrical filter screens (251) gradually decreases towards the central axis of the filter assembly (25).

7. The granulation system according to claim 5, characterized in that, The filter chamber (24) is a cavity structure. The first port (21) and the exhaust gas outlet (23) are located on the side wall of the cavity structure, and the first port (21) and the exhaust gas outlet (23) are located on opposite sides of the central axis of the cavity structure.

8. The granulation system according to claim 6, characterized in that, The filter assembly (25) further includes a guide plate (252), which is inclinedly disposed below the cylindrical filter screen (251), and the bottom end of the guide plate (252) is close to the bottom wall opening of the filter chamber (24).

9. The granulation system according to claim 5, characterized in that, The recycling device (20) further includes an enrichment component (26), which includes an enrichment space and a second port (22) located on the bottom wall of the enrichment space, the second port (22) being connected to the recycling port (12).

10. The granulation system according to claim 1, characterized in that, The granulation device (10) includes a screw (15) and a drive mechanism (16). The screw (15) is inserted inside the cylinder (14), and the drive mechanism (16) is drivenly connected to the screw (15).

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