Granulation production system

Abstract

The embodiment of the present application provides a granulation production system. The granulation production system comprises a granulation kettle, a cooling kettle, a first balance pipeline and a second balance pipeline. The two ends of the first balance pipeline and the second balance pipeline are respectively connected with the granulation kettle and the cooling kettle, so that the air pressure in the granulation kettle and the cooling kettle is balanced. The conduction or the closing of the first balance pipeline and the second balance pipeline is independently controlled. A tar condenser is arranged on the first balance pipeline. The granulation production system provided by the embodiment of the present application balances the air pressure between the granulation kettle and the cooling kettle through the first balance pipeline and the second balance pipeline. Since the two balance pipelines are independently controlled, when one pipeline is blocked, the other pipeline can continue to connect the two kettles to balance the air pressure, so that the discharge of the granulation kettle to the cooling kettle is smooth. In addition, the tar condenser is arranged on the first balance pipeline, which is used for collecting tar in the exhaust gas of the granulation kettle, so that the by-product of the granulation is recycled.

Description

Technical Field

[0001] This application relates to the field of granulation technology, and in particular to a granulation production system. Background Technology

[0002] In the production process of artificial graphite anode materials, granulation technology is required to improve their fast-charging performance and energy density. This involves adding a binder to bond individual particles together, forming secondary particles. Specifically, a closed stirring device is used to agitate or lift the particles, causing them to collide and granulate under the action of the binder. Heat treatment removes volatiles and cokes the binder, forming stable secondary particles.

[0003] Granulation production lines typically use vertical high-temperature reactors for heat treatment and horizontal cooling reactors for material cooling. A pipe connects the bottom of the vertical high-temperature reactor and the top of the horizontal cooling reactor for material feeding. To ensure smooth feeding, a balance pipe is introduced from the top of the vertical high-temperature reactor and connected to the top of the horizontal cooling reactor to balance the air pressure. However, when the balance pipe becomes blocked, the gas flow between the vertical high-temperature reactor and the horizontal cooling reactor is obstructed, resulting in a large pressure difference between the two reactors, which in turn hinders the feeding of material from the vertical high-temperature reactor to the horizontal cooling reactor. Utility Model Content

[0004] Based on this, embodiments of this application provide a granulation production system.

[0005] This application provides a granulation production system, including a granulation tank, a cooling tank, a first balancing pipeline, and a second balancing pipeline. The two ends of the first balancing pipeline and the second balancing pipeline are respectively connected to the granulation tank and the cooling tank to balance the gas pressure in the granulation tank and the cooling tank. The opening and closing of the first balancing pipeline and the second balancing pipeline are independently controlled. A tar condenser is provided on the first balancing pipeline.

[0006] In some embodiments, a first control valve is provided on the first balancing pipeline, the first control valve being located between the granulation vessel and the tar condenser, and a second control valve is provided on the second balancing pipeline.

[0007] In some embodiments, the first balancing pipeline is further provided with a material collection container. The tar condenser and the material collection container are arranged sequentially in the direction from the granulation kettle to the cooling kettle. The tar condenser is used to collect tar in the gas in the granulation kettle, and the material collection container is used to collect the material escaping from the cooling kettle when the granulation kettle feeds material to the cooling kettle.

[0008] In some embodiments, a third control valve is further provided on the first balancing pipeline, the third control valve being located between the material collection container and the cooling kettle.

[0009] In some embodiments, the granulation production system further includes a manifold that connects to the cooling tank. The ends of the first balancing pipe that are away from the granulation tank, the ends of the second balancing pipe that are away from the granulation tank, and the ends of the manifold that are away from the cooling tank are connected by a T-joint.

[0010] In some embodiments, the top of the granulation vessel is provided with a first gas inlet and outlet, and the first balancing pipeline includes a first connecting pipe connecting the first gas inlet and outlet, wherein the first connecting pipe is a vertical pipe or an inclined pipe; and / or,

[0011] The granulation reactor is provided with a second gas inlet and outlet at the top, and the second balance pipeline includes a second connecting pipe that connects to the second gas inlet and outlet, the second connecting pipe being a vertical pipe or an inclined pipe; and / or,

[0012] The top of the cooling vessel is provided with a third gas inlet and outlet, and the manifold includes a third connecting pipe that connects to the third gas inlet and outlet. The third connecting pipe is a vertical pipe or an inclined pipe.

[0013] The vertical pipe is perpendicular to the ground, and the angle between the inclined pipe and the ground is greater than the angle of repose of the material.

[0014] In some embodiments, the granulation vessel is provided with a discharge port, the cooling vessel is provided with a feed port, the discharge port and the feed port are connected by a discharge pipe, the discharge pipe is provided with a discharge valve and a discharge valve, the discharge valve and the discharge valve are arranged sequentially in the direction from the discharge port to the feed port, the discharge valve is used to control the opening or closing of the discharge pipe, and the discharge valve is used to control the flow rate of the material in the discharge pipe.

[0015] In some embodiments, the discharge valve includes a housing and a rotor disposed within the housing. The housing has an inlet and an outlet. The rotor includes a shaft and a plurality of blades. The plurality of blades are radially distributed around the shaft and are all connected to the shaft. The inlet and the outlet are located on opposite sides of the shaft, respectively.

[0016] In some embodiments, the granulation production system further includes an induced draft fan, which is connected to the upper cavity of the tar condenser via an induced draft pipe.

[0017] In some embodiments, the granulation vessel includes a vessel body and a stirring shaft disposed within the vessel body, wherein the stirring shaft is provided with a first spiral ribbon and a second spiral ribbon with opposite spiral directions.

[0018] The granulation production system provided in this application embodiment balances the gas pressure between the granulation vessel and the cooling vessel through a first balancing pipeline and a second balancing pipeline. Since the two balancing pipelines are independently controlled, when one pipeline becomes blocked, the other pipeline can continue to connect the two vessels to balance the gas pressure, thereby ensuring smooth feeding from the granulation vessel to the cooling vessel. Furthermore, the first balancing pipeline is equipped with a tar condenser to collect tar from the gas discharged from the granulation vessel, realizing the recovery of granulation by-products. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0020] Figure 1 This is a schematic diagram of a granulation production system provided in an embodiment of this application.

[0021] Figure 2 This is a schematic diagram of a first partial structure of a first balancing pipeline provided in an embodiment of this application.

[0022] Figure 3 This is a schematic diagram of a second partial structure of the first balancing pipeline provided in an embodiment of this application.

[0023] Figure 4 This is a schematic diagram of the granulation reactor provided in an embodiment of this application.

[0024] Figure 5 This is a first-view structural schematic diagram of the unloading valve provided in an embodiment of this application.

[0025] Figure 6 This is a second-view structural schematic diagram of the unloading valve provided in an embodiment of this application.

[0026] Figure 7 This is a partial structural schematic diagram of the unloading valve provided in an embodiment of this application.

[0027] Figure 8 This is a cross-sectional structural diagram of the rotor provided in an embodiment of this application.

[0028] Component symbol explanation:

[0029] 100. Granulation production system; 10. Granulation kettle; 101. First gas inlet / outlet; 102. Second gas inlet / outlet; 103. Discharge port; 11. Kettle body; 12. Stirring shaft; 13. First spiral ribbon; 14. Second spiral ribbon; 15. Drive motor; 16. Reducer; 17. Support lug; 20. Cooling kettle; 21. Third gas inlet / outlet; 22. Feed inlet; 23. Protective gas inlet; 31. First balancing pipeline; 311. First connecting pipe; 312. Second connecting pipe ; 313, Third connecting pipe; 32, Second balancing pipe; 33, Manifold; 41, Tar condenser; 42, Material collection container; 51, First control valve; 52, Second control valve; 53, Third control valve; 61, Exhaust fan; 62, Exhaust duct; 63, Air valve; 70, Discharge duct; 71, Discharge valve; 80, Unloading valve; 81, Shell; 811, Inlet; 812, Outlet; 82, Rotor; 821, Shaft; 822, Blades; 83, Drive system. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0031] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0032] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0033] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0034] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0035] Please see Figure 1 This application provides a granulation production system 100, including a granulation tank 10, a cooling tank 20, a first balancing pipeline 31, and a second balancing pipeline 32. The two ends of the first balancing pipeline 31 and the second balancing pipeline 32 are respectively connected to the granulation tank 10 and the cooling tank 20 to balance the gas pressure in the granulation tank 10 and the cooling tank 20. The opening and closing of the first balancing pipeline 31 and the second balancing pipeline 32 are independently controlled. A tar condenser 41 is provided on the first balancing pipeline 31.

[0036] It is understood that the granulation vessel 10 is a granulation device, and by way of example, the granulation vessel 10 can be at least one of a vertical vessel, a horizontal vessel, a drum furnace, and a rotary furnace.

[0037] The granulation production system 100 provided in this application embodiment balances the gas pressure between the granulation vessel 10 and the cooling vessel 20 through a first balancing pipeline 31 and a second balancing pipeline 32. Since the two balancing pipelines are independently controlled, when one pipeline becomes blocked, the other pipeline can continue to connect the two vessels to balance the gas pressure, thereby ensuring smooth feeding from the granulation vessel 10 to the cooling vessel 20. Furthermore, a tar condenser 41 is also provided on the first balancing pipeline 31 to collect tar from the gas discharged from the granulation vessel 10, realizing the recovery of granulation by-products.

[0038] Please see Figure 1 The first balance pipeline 31 is provided with a first control valve 51, which is located between the granulation kettle 10 and the tar condenser 41. The second balance pipeline 32 is provided with a second control valve 52.

[0039] It is understandable that by setting the first control valve 51 to control the first balance pipeline 31 and setting the second control valve 52 to control the second balance pipeline 32, the independent control of the first balance pipeline 31 and the second balance pipeline 32 can be achieved. Thus, during the production process, at least one of the first balance pipeline 31 and the second balance pipeline 32 can be selected as needed to achieve air pressure balance between the granulation tank 10 and the cooling tank 20.

[0040] Please see Figure 1 The first balance pipeline 31 is also provided with a material collection container 42. The tar condenser 41 and the material collection container 42 are arranged sequentially in the direction from the granulation kettle 10 to the cooling kettle 20. The tar condenser 41 is used to collect tar in the gas in the granulation kettle 10. The material collection container 42 is used to collect the material that escapes from the cooling kettle 20 when the granulation kettle 10 feeds material to the cooling kettle 20.

[0041] It is understandable that when the granulation vessel 10 feeds material into the cooling vessel 20, the falling material will quickly compress the gas inside the cooling vessel 20. When the gas escapes, it will carry some small particles of material upwards. Since the first balance pipe 31 is usually in a conductive state during the production process, and the second balance pipe 32 is usually in a standby state, it is only opened when the first balance pipe 31 is blocked. That is, the conductive time of the first balance pipe 31 is much longer than that of the second balance pipe 32. In other words, most of the material escaping from the cooling vessel 20 enters the first balance pipe 31. Therefore, this application can collect the material escaping from the cooling vessel 20 by setting a material collection container 42 in the first balance pipe 31, thereby improving the granulation yield.

[0042] Please see Figure 1 A third control valve 53 is also provided on the first balancing pipeline 31, and the third control valve 53 is located between the material collection container 42 and the cooling kettle 20. It can be understood that the third control valve 53 can be used to control whether the gas in the cooling kettle 20 is discharged into the material collection container 42, and at the same time, it can control whether the granulation kettle 10 and the cooling kettle 20 are connected by gas through the first balancing pipeline 31.

[0043] Please see Figure 1The granulation production system 100 also includes a manifold 33, which is connected to the cooling tank 20. The end of the first balancing pipe 31 that is away from the granulation tank 10, the end of the second balancing pipe 32 that is away from the granulation tank 10, and the end of the manifold 33 that is away from the cooling tank 20 are connected by a T-connector.

[0044] It is understandable that by setting up the manifold 33, the gas in the first balance pipe 31 and the second balance pipe 32 is gathered together and connected to the cooling vessel 20 via the manifold 33. This allows the cooling vessel 20 to be connected to the first balance pipe 31 and the second balance pipe 32 with only one gas inlet and outlet at the top, thereby simplifying the structure of the cooling vessel 20 and the pipeline design.

[0045] Please see Figure 1 and Figure 2 The top of the granulation vessel 10 is provided with a first gas inlet and outlet 101, and the first balance pipeline 31 includes a first connecting pipe 311 that connects to the first gas inlet and outlet 101. The first connecting pipe 311 is a vertical pipe or an inclined pipe.

[0046] Please see Figure 1 and Figure 3 The top of the granulation vessel 10 is provided with a second gas inlet and outlet 102, and the second balance pipeline 32 includes a second connecting pipe 312 that connects to the second gas inlet and outlet 102. The second connecting pipe 312 is a vertical pipe or an inclined pipe.

[0047] Please see Figure 1 and Figure 2 The top of the cooling vessel 20 is provided with a third gas inlet and outlet 21, and the manifold 33 includes a third connecting pipe 313 that connects to the third gas inlet and outlet 21. The third connecting pipe 313 is a vertical pipe or an inclined pipe.

[0048] The vertical pipe is perpendicular to the ground, and the angle between the inclined pipe and the ground is greater than the angle of repose of the material.

[0049] It is understandable that the angle of repose of a material refers to the maximum angle formed between the surface of the stockpile and the horizontal plane (ground) when the bulk material is in a natural stacked state.

[0050] It is understood that the upward-flowing gas in the granulation vessel 10 and the cooling vessel 20 usually carries a portion of the material. Therefore, this application sets the first connecting pipe 311 and the second connecting pipe 312 for discharging the gas inside the granulation vessel 10 and the third connecting pipe 313 for discharging the gas inside the cooling vessel 20 as vertical or inclined pipes, and sets the angle between the inclined pipe and the ground to be greater than the angle of repose of the material. This is beneficial to allow the material in the upward-flowing gas to settle in the pipe under the action of gravity and flow back to the granulation vessel 10 or the cooling vessel 20 along the pipe.

[0051] Please see Figure 4 The granulation vessel 10 includes a vessel body 11 and a stirring shaft 12 disposed within the vessel body 11. The stirring shaft 12 is provided with a first spiral ribbon 13 and a second spiral ribbon 14 with opposite spiral directions.

[0052] It should be noted that by setting a first spiral ribbon 13 and a second spiral ribbon 14 with opposite spiral directions on the stirring shaft 12 of the granulation tank 10, the material in the granulation tank 10 can be alternately stirred by a combination of forward and reverse rotation during the production process. When the stirring shaft 12 rotates in reverse, the first spiral ribbon 13 and the second spiral ribbon 14 squeeze the material in the granulation tank 10 downward, and the feeding speed is relatively fast. When the stirring shaft 12 rotates in the forward direction, the first spiral ribbon 13 and the second spiral ribbon 14 lift the material in the granulation tank 10, causing the material to fall from the hollow position between the two spiral ribbons, and the feeding speed is relatively slow. By alternating between forward and reverse rotation, the feeding speed from the granulation tank 10 to the cooling tank 20 can be appropriately reduced.

[0053] It is understandable that when the material enters the cooling tank 20 from the granulation tank 10 at a relatively fast speed, the falling material will quickly compress the nitrogen in the cooling tank 20, causing the nitrogen to escape. At the same time, the nitrogen carries some small particles of material from the feed inlet 22 of the cooling tank 20 upwards and into the granulation tank 10. This further carries the material that has not been completely discharged into the granulation tank 10 into the tar condenser 41 or the flue gas pipeline, resulting in material loss and a low granulation yield.

[0054] This application controls the feeding speed from the granulation tank 10 to the cooling tank 20, which can avoid or reduce material loss caused by the upward nitrogen gas entering the granulation tank 10 in the cooling tank 20 and carrying the material into the tar condenser 41 or flue gas pipeline, thereby improving the granulation yield. At the same time, it can also avoid the situation where a large amount of material rushes into the pipeline when the valve is opened, causing the feeding pipeline 70 to be blocked.

[0055] Please see Figure 4The granulation vessel 10 also includes a drive motor 15 and a reducer 16. The drive motor 15 and the reducer 16 are both located outside the vessel body 11. The drive motor 15, the reducer 16 and the stirring shaft 12 are driven in sequence to form a power transmission chain.

[0056] Please see Figure 4 The granulation vessel 10 further includes at least three support ears 17, which are disposed outside the vessel body 11 and connected to the vessel body 11. It is understood that by attaching the support ears 17 to the support frame, the granulation vessel 10 can be fixed. It is understood that "at least three" refers to three or more, such as three, four, five, six, etc.

[0057] Please see Figure 1 The granulation vessel 10 is provided with a discharge port 103, and the cooling vessel 20 is provided with a feed port 22. The discharge port 103 and the feed port 22 are connected by a discharge pipe 70. The discharge pipe 70 is provided with a discharge valve 71 and a discharge valve 80. The discharge valve 71 and the discharge valve 80 are arranged sequentially in the direction from the discharge port 103 to the feed port 22. The discharge valve 71 is used to control the opening or closing of the discharge pipe 70, and the discharge valve 80 is used to control the flow rate of the material in the discharge pipe 70.

[0058] It is understandable that by setting the discharge valve 80 to control the flow rate of the material in the discharge pipe 70, it is possible to avoid the situation where the downward flowing material collapses into the cooling tank 20 in an instant, causing nitrogen to rise and thus resulting in material loss.

[0059] Please see Figure 5 , Figure 6 , Figure 7 and Figure 8 The discharge valve 80 includes a housing 81 and a rotor 82 disposed within the housing 81. The housing 81 is provided with an inlet 811 and an outlet 812. The rotor 82 includes a rotating shaft 821 and a plurality of blades 822. The plurality of blades 822 are radially distributed around the rotating shaft 821 and are all connected to the rotating shaft 821. The inlet 811 and the outlet 812 are respectively located on opposite sides of the rotating shaft 821.

[0060] It should be noted that by setting a rotor 82 in the discharge valve 80 and arranging multiple radially distributed blades 822 around the rotating shaft 821 of the rotor 82, the material entering the discharge valve 80 can be distributed in the interval area between the blades 822—that is, in the multiple compartments enclosed by adjacent blades 822. By dispersing the material in different compartments, mutual adhesion can be avoided. As the rotating shaft 821 rotates, the material in the compartments on the inlet 811 side is carried to the outlet 812 side for discharge. Therefore, by controlling the rotation speed of the rotating shaft 821, the discharge speed of the material can be limited, thereby achieving the regulation of the discharge speed.

[0061] Please see Figure 5 and Figure 6 The inlet 811 is located above the outlet 812.

[0062] Please see Figures 5 to 8 The discharge valve 80 also includes a drive system 83 for driving the rotor 82 to rotate. The drive system 83 is disposed outside the housing 81 and is connected to the rotor 82 in a transmission manner.

[0063] Please see Figure 1 The granulation production system 100 also includes an induced draft fan 61, which is connected to the upper cavity of the tar condenser 41 through an induced draft pipe 62.

[0064] It is understandable that by setting up the induced draft fan 61, a portion of the gas in the tar condenser 41 can be extracted, creating a negative pressure inside the tar condenser 41, thereby creating suction on the tar-containing gas in the granulation kettle 10.

[0065] Please see Figure 1 For example, the air duct 62 is provided with an air valve 63, which is used to control the opening or closing of the air duct 62.

[0066] For example, the cooling vessel 20 is also provided with a protective gas inlet 23. Before the material is fed from the granulation vessel 10 into the cooling vessel 20, a protective gas (such as nitrogen or inert gas) can be introduced into the cooling vessel 20 through the protective gas inlet 23 to replace the air in the cooling vessel 20 and prevent the material from being oxidized.

[0067] The granulation production system provided in the embodiments of this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A granulation production system, characterized in that, It includes a granulation tank, a cooling tank, a first balancing pipeline, and a second balancing pipeline. The two ends of the first balancing pipeline and the second balancing pipeline are respectively connected to the granulation tank and the cooling tank to balance the gas pressure in the granulation tank and the cooling tank. The opening and closing of the first balancing pipeline and the second balancing pipeline are independently controlled. A tar condenser is provided on the first balancing pipeline.

2. The granulation production system according to claim 1, characterized in that, The first balance pipeline is equipped with a first control valve, which is located between the granulation kettle and the tar condenser. The second balance pipeline is equipped with a second control valve.

3. The granulation production system according to claim 1, characterized in that, The first balance pipeline is also equipped with a material collection container. The tar condenser and the material collection container are arranged sequentially in the direction from the granulation kettle to the cooling kettle. The tar condenser is used to collect tar in the gas in the granulation kettle, and the material collection container is used to collect the material that escapes from the cooling kettle when the granulation kettle feeds material to the cooling kettle.

4. The granulation production system according to claim 3, characterized in that, The first balancing pipeline is also equipped with a third control valve, which is located between the material collection container and the cooling kettle.

5. The granulation production system according to claim 4, characterized in that, The granulation production system also includes a manifold, which is connected to the cooling tank. The end of the first balancing pipe that is away from the granulation tank, the end of the second balancing pipe that is away from the granulation tank, and the end of the manifold that is away from the cooling tank are connected by a T-joint.

6. The granulation production system according to claim 5, characterized in that, The granulation reactor is provided with a first gas inlet and outlet at the top, and the first balance pipeline includes a first connecting pipe that connects to the first gas inlet and outlet, wherein the first connecting pipe is a vertical pipe or an inclined pipe; and / or, The granulation reactor is provided with a second gas inlet and outlet at the top, and the second balance pipeline includes a second connecting pipe that connects to the second gas inlet and outlet, the second connecting pipe being a vertical pipe or an inclined pipe; and / or, The top of the cooling vessel is provided with a third gas inlet and outlet, and the manifold includes a third connecting pipe that connects to the third gas inlet and outlet. The third connecting pipe is a vertical pipe or an inclined pipe. The vertical pipe is perpendicular to the ground, and the angle between the inclined pipe and the ground is greater than the angle of repose of the material.

7. The granulation production system according to claim 1, characterized in that, The granulation vessel is provided with a discharge port, and the cooling vessel is provided with a feed port. The discharge port and the feed port are connected by a discharge pipe. The discharge pipe is provided with a discharge valve and a discharge valve. The discharge valve and the discharge valve are arranged sequentially in the direction from the discharge port to the feed port. The discharge valve is used to control the opening or closing of the discharge pipe, and the discharge valve is used to control the flow rate of the material in the discharge pipe.

8. The granulation production system according to claim 7, characterized in that, The discharge valve includes a housing and a rotor disposed within the housing. The housing has an inlet and an outlet. The rotor includes a shaft and multiple blades. The multiple blades are radially distributed around the shaft and are all connected to the shaft. The inlet and the outlet are located on opposite sides of the shaft.

9. The granulation production system according to any one of claims 1-8, characterized in that, The granulation production system also includes an induced draft fan, which is connected to the upper cavity of the tar condenser via an induced draft pipe.

10. The granulation production system according to any one of claims 1-8, characterized in that, The granulation vessel includes a vessel body and a stirring shaft disposed within the vessel body. The stirring shaft is provided with a first spiral ribbon and a second spiral ribbon with opposite spiral directions.

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