Pelletizing and coating system for needle coke

Abstract

The utility model relates to the technical field of needle coke granulating and coating, in particular to a needle coke granulating and coating system, which comprises an asphalt mixer, a mechanical fusion machine and a granulating and carbonizing machine, and is characterized in that the asphalt mixer, the mechanical fusion machine and the granulating and carbonizing machine are positioned in the same production workshop; the asphalt mixing machine, the mechanical fusion machine and the granulation carbonization machine are sequentially arranged on the same production line or the asphalt mixing machine, the mechanical fusion machine and the granulation carbonization machine are arranged in a triangular shape; wherein the distance between the asphalt mixing machine and the mechanical fusion machine is d1, the distance between the mechanical fusion machine and the granulation carbonization machine is d2, and at least one of d1 and d2 is not larger than 5 m.

Description

TECHNICAL FIELD

[0001] The utility model relates to needle coke preparation technical field, concretely is a needle coke granulation coating. BACKGROUND

[0002] With the rapid development of new energy industry, lithium ion battery has broad application prospect in electric vehicles and large energy storage field, artificial graphite negative material is mainly needle coke and petroleum coke, and needle coke is currently used as the main application material of lithium ion battery negative material due to its low sulfur content, low ash content, low metal content and easy graphitization, which has a key influence on battery performance.

[0003] The needle coke granulation coating system generally comprises a pitch mixing machine, a mechanical fusion machine and a granulation carbonization machine, and the reasonable layout of these devices is extremely important for the efficiency of the needle coke granulation coating, and the layout of these devices in the prior art lacks rationality, which affects the efficiency of the needle coke granulation coating.

[0004] In order to solve the above problems, a needle coke granulation coating system is needed to solve the problem of needle coke granulation coating efficiency. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a needle coke granulation coating system to solve the problems in the background art.

[0006] In order to achieve the above object, the utility model provides the following technical scheme:

[0007] A needle coke granulation coating system comprises a pitch mixing machine, a mechanical fusion machine and a granulation carbonization machine, characterized in that: the pitch mixing machine, the mechanical fusion machine and the granulation carbonization machine are located in the same production workshop.

[0008] The pitch mixing machine, the mechanical fusion machine and the granulation carbonization machine are arranged in sequence on the same production line, or the pitch mixing machine, the mechanical fusion machine and the granulation carbonization machine are arranged in a triangular shape.

[0009] The distance between the pitch mixing machine and the mechanical fusion machine is d1, the distance between the mechanical fusion machine and the granulation carbonization machine is d2, and at least one of d1 and d2 is not greater than 5m.

[0010] According to the needle coke granulation coating system, the distance d1 between the pitch mixing machine and the mechanical fusion machine is equal to the distance d2 between the mechanical fusion machine and the granulation carbonization machine.

[0011] According to the needle coke granulation coating system, the distance d1 between the pitch mixer and the mechanical fusion machine and the distance d2 between the mechanical fusion machine and the granulation carbonization machine are not less than 0.5 m.

[0012] According to the needle coke granulation coating system, the distance d1 between the pitch mixer and the mechanical fusion machine and the distance d2 between the mechanical fusion machine and the granulation carbonization machine are not less than 0.5 m.

[0013] According to the needle coke granulation coating system, the distance d1 between the pitch mixer and the mechanical fusion machine and the distance d2 between the mechanical fusion machine and the granulation carbonization machine are not less than 0.5 m.

[0014] According to the needle coke granulation coating system, the pitch mixer comprises a conical mixing cavity and a central rotating shaft arranged along the central axis of the conical mixing cavity, and the needle coke and the pitch are uniformly mixed by rotation of the central rotating shaft.

[0015] The mechanical fusion machine comprises a fusion cavity and a stirring blade, the stirring blade comprises a fixed part and an extrusion blade arranged at the front end of the fixed part, a stirring cavity is arranged in the fusion cavity, the stirring blade is arranged in extension along the radial direction of the stirring cavity, the stirring blade and the cavity wall of the stirring cavity are in relative rotation, and the extrusion blade is configured to extrude the mixed needle coke and pitch against the cavity wall of the stirring cavity.

[0016] The granulation carbonization machine comprises a conical cavity, a heating device configured to heat the conical cavity in proportion, and a stirring main shaft configured to uniformly heat the fused needle coke and pitch.

[0017] The rotating speed of the central rotating shaft is not less than 1000 rpm, the conical mixing cavity comprises a mixing cavity and a water-cooled jacket, cooling water is introduced into the water-cooled jacket to cool the needle coke and pitch in the mixing cavity, a plurality of guide plates are arranged in the water-cooled jacket, and the guide plates are configured to guide the flow direction of the cooling water.

[0018] The mechanical fusion machine further comprises a cloth bag filtering device, the cloth bag filtering device is arranged at the upper part of the fusion cavity, and the cloth bag filtering device is in communication with the inside of the fusion cavity.

[0019] According to the needle coke prilling coating system, the asphalt mixer comprises a mounting support, a first driving system and a mixing system, the first driving system and the mixing system are mounted on the mounting support, the mixing system comprises the conical mixing cavity and the central rotating shaft, the first driving system is configured to rotate the central rotating shaft, a sealing upper cover is arranged on the conical mixing cavity, a discharging cylinder is arranged at a lower portion of the conical mixing cavity, the discharging cylinder is arranged in communication with the conical mixing cavity, and a discharging valve is arranged on the discharging cylinder.

[0020] The discharging valve is configured to control the communication or sealing between the discharging cylinder and the conical mixing cavity.

[0021] According to the needle coke prilling coating system, the mechanical fusion machine comprises a mounting platform, a second driving system, a linear driving member and a mechanical fusion member, the mechanical fusion member comprises the fusion cavity, the stirring blade and the stirring cavity, the second driving system is configured to drive the stirring cavity to rotate, a fusion cavity sealing cover is arranged at an upper portion of the fusion cavity, a feeding portion is arranged on the fusion cavity sealing cover, the feeding portion is configured to add mixed needle coke and asphalt, and the linear driving member is configured to drive the fusion cavity sealing cover to be buckled on the fusion cavity or to be away from the fusion cavity.

[0022] A discharging channel is arranged between the stirring cavity and the fusion cavity, a discharging portion is arranged at a side of the fusion cavity, the discharging portion is in communication with the discharging channel, and a discharging valve is arranged on the discharging portion.

[0023] The stirring cavity is connected with the second driving system through a stirring rotating shaft, and a gas seal structure is adopted to seal between the stirring rotating shaft and the fusion cavity.

[0024] The cloth bag filtering device is arranged on the fusion cavity sealing cover, and the cloth bag filtering device is in communication with the fusion cavity sealing cover.

[0025] According to the needle coke prilling coating system, the prilling carbonization machine comprises a device frame, the conical cavity, the heating device and the stirring main shaft, a third driving system and a second linear driving member.

[0026] A cavity cover plate is arranged on the conical cavity, the stirring main shaft penetrates through the cavity cover plate and extends into the conical cavity, the cavity cover plate is in communication with an air inlet pipeline and an air outlet pipeline, the air outlet pipeline comprises a waste gas pipeline and an exhaust pipeline, and the waste gas pipeline is in communication with a waste gas treatment system.

[0027] The third drive system is configured to drive the stirring spindle to rotate, and the second linear drive is configured to drive the cavity cover and the stirring spindle to move in a linear motion.

[0028] The lower part of the conical cavity is connected to a discharge pipe, and the discharge pipe is provided with a discharge blocking component. The discharge blocking component is driven by a third linear drive component to open or close the discharge pipe.

[0029] Compared with the prior art, the beneficial effects of this utility model are:

[0030] The needle coke granulation and coating system proposed in this utility model comprises an asphalt mixer, a mechanical fusion machine, and a granulation and carbonization machine located in the same production workshop; the asphalt mixer, the mechanical fusion machine, and the granulation and carbonization machine are arranged sequentially on the same production line or in a triangular arrangement; wherein the distance between the asphalt mixer and the mechanical fusion machine is d1, and the distance between the mechanical fusion machine and the granulation and carbonization machine is d2, and at least one of d1 and d2 is not greater than 5m; the layout of various equipment is reasonable, effectively improving the efficiency of needle coke granulation and coating, improving the rational utilization of the workshop, and increasing the utilization rate of the workshop. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the layout structure of an embodiment of the granulation and coating system of this utility model;

[0032] Figure 2 This is a schematic diagram of the layout structure of another embodiment of the granulation and coating system of this utility model;

[0033] Figure 3 This is a schematic diagram of an asphalt mixer structure for a needle-shaped coke granulation coating system according to an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the mechanical fusion machine structure of a needle-shaped coke granulation and coating system according to an embodiment of the present invention;

[0035] Figure 5 This is a schematic diagram of the internal structure of a mechanical fusion component in a needle-shaped coke granulation coating system according to an embodiment of the present invention;

[0036] Figure 6 This is a schematic diagram of the stirring blade structure of a needle-shaped coke granulation coating system in an embodiment of the present invention;

[0037] Figure 7 This is a schematic diagram of the granulation and carbonization machine structure of a needle-shaped coke granulation and coating system according to an embodiment of the present invention;

[0038] 1-mounting bracket; 2-first driving system; 3-conical mixing cavity; 4-central rotating shaft; 5-sealing upper cover; 6-discharging cylinder; 7-discharging valve; 8-mounting platform; 9-second driving system; 10-linear driving member; 11-fusion cavity; 12-stirring blade; 122-fixing member; 13-stirring cavity; 14-fusion cavity sealing cover; 15-feeding part; 16-discharging channel; 17-discharging part; 18-discharging valve; 19-bag filter device; 20-stirring rotating shaft; 21-device frame; 22-conical cavity; 23-stirring main shaft; 25-second linear driving member; 26-cavity cover plate; 27-air inlet pipeline; 28-waste gas pipeline; 29-exhaust pipeline; 30-waste gas treatment system; 31-discharging pipe; 32-third linear driving member; 101-bituminous mixture; 102-mechanical fusion machine; 103-granulating coating machine. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme of the utility model carry on clear, complete description, and the advantage is more clear and obvious, the following combining with the drawing carries on further detailed explanation to the utility model embodiment. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all embodiments, only to explain the embodiments of the utility model, and not for limiting the embodiments of the utility model, all other embodiments obtained by the ordinary skill in the art without creative labor are within the scope of the utility model protection.

[0040] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be broad understanding, for example, can be fixedly connected, can be detachably connected, or integrated; can be mechanically connected, can be electrically connected; can be directly connected, can be indirectly connected through the intermediate medium, can be the communication of two elements or the interaction of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. In the utility model, unless otherwise explicitly specified and limited, the first feature is "on" or "below" the second feature, which can include the direct contact of the first and second features, or the contact of the first and second features through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0041] In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like, orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0042] Please refer to Figures 1 to 2 The utility model provides a technical scheme: a needle coke granulation coating system, including pitch mixing machine, mechanical fusion machine and granulation carbonization machine, pitch mixing machine, mechanical fusion machine and granulated carbonization machine are located in the same production workshop,

[0043] Pitch mixing machine, mechanical fusion machine and granulated carbonization machine are arranged in sequence on the same production line (please refer to Figure 1 ) or pitch mixing machine, mechanical fusion machine and granulated carbonization machine are arranged in triangle (please refer to Figure 2 );

[0044] Among them, the distance between pitch mixing machine and mechanical fusion machine is d1, the distance between mechanical fusion machine and granulated carbonization machine is d2, at least one of d1 and d2 is not more than 5m.

[0045] In a specific embodiment, the distance d1 between the pitch mixing machine and the mechanical fusion machine and the distance d2 between the mechanical fusion machine and the granulated carbonization machine are equal.

[0046] In a specific embodiment, the distance d1 between the pitch mixing machine and the mechanical fusion machine and the distance d2 between the mechanical fusion machine and the granulated carbonization machine are not more than 5m.

[0047] In a specific embodiment, at least one of the distance d1 between the pitch mixing machine and the mechanical fusion machine and the distance d2 between the mechanical fusion machine and the granulated carbonization machine is not less than 0.5m.

[0048] In a specific embodiment, neither of the distance d1 between the pitch mixing machine and the mechanical fusion machine and the distance d2 between the mechanical fusion machine and the granulated carbonization machine is less than 0.5m.

[0049] Please refer to Figures 3 to 7 A needle coke granulation coating system,

[0050] Including pitch mixing machine, mechanical fusion machine and granulation carbonization machine;

[0051] Among them,

[0052] The pitch mixer is configured to mix the needle coke and the pitch in a preset proportion uniformly;

[0053] The mechanical fusion machine is configured to extrude and compact the needle coke and the pitch mixed uniformly, and extrude the pitch to the surface of the needle coke;

[0054] The granulating carbonization machine is configured to pre-carbonize the needle coke and the pitch after extrusion and compaction;

[0055] The pitch mixer comprises a conical mixing cavity and a central rotating shaft arranged along the central axis of the conical mixing cavity, and the needle coke and the pitch are mixed uniformly by rotation of the central rotating shaft;

[0056] The mechanical fusion machine comprises a fusion cavity and a stirring blade, the stirring blade comprises a fixed part 121 and an extrusion blade 122 arranged at the front end of the fixed part, a stirring cavity is arranged in the fusion cavity, the stirring blade is arranged in extension along the radial direction of the stirring cavity, the stirring blade rotates relative to the cavity wall of the stirring cavity, and the extrusion blade is configured to extrude the needle coke and the pitch mixed after mixing and the cavity wall of the stirring cavity;

[0057] The granulating carbonization machine comprises a conical cavity, a heating device configured to heat the conical cavity proportionally, and a stirring main shaft configured to uniformly heat the needle coke and the pitch after fusion;

[0058] The rotating speed of the central rotating shaft is not less than 1000 revolutions per minute, the conical mixing cavity comprises a mixing cavity and a water-cooled jacket, cooling water is introduced into the water-cooled jacket to cool the needle coke and the pitch in the mixing cavity, and a plurality of guide plates are arranged in the water-cooled jacket and configured to guide the flow direction of the cooling water;

[0059] Similarly, in order to cool the heat generated in the fusion process, a water-cooled jacket is also arranged outside the fusion cavity.

[0060] The mechanical fusion machine further comprises a cloth bag filtering device, the cloth bag filtering device is arranged at the upper part of the fusion cavity, and the cloth bag filtering device communicates with the inside of the fusion cavity.

[0061] Specifically, the pitch mixer mainly plays a premixing role, the conical mixing cavity, the central rotating shaft linear speed is not less than 26 m / s (i.e. the rotating speed is 1000 revolutions per minute), and high centrifugal force makes the two materials (needle coke and pitch) roll upward along the inclined wall of the cone to the center, forming a mixing effect, uniformly mixing the needle coke particles and the pitch particles together, and uniformly dispersing the pitch particles around the coke particles.

[0062] The mechanical fusion machine mainly plays a role of fully mixing and mechanical coating; the cavity space is filled by more than 80%, under the rotation of the specific stirring blade structure, extrusion and continuous rolling are generated between the particles, so that the pitch is tightly coated on the surface of the coke particles, the tightness of the particle agglomeration is improved, and the particle tap density is improved.

[0063] The granulating carbonization machine mainly plays a role of pre-carbonization and granulating coating, the conical cavity, the material rolls along the wall and mixes, the cylinder wall is heated to melt the pitch, realize the bonding and granulating of the particles. The temperature is raised during the stirring process, the pitch is gradually carbonized, the pitch is melted and coated on the secondary particles, and the pitch is carbonized at high temperature.

[0064] In one specific embodiment, the pitch mixing machine comprises a mounting bracket 1, a first driving system 2 and a mixing system, the first driving system and the mixing system are mounted on the mounting bracket, the mixing system comprises the conical mixing cavity 3 and the center rotating shaft 4, the first driving system is configured to rotate the center rotating shaft, the conical mixing cavity is provided with a sealing upper cover 5, the lower part of the conical mixing cavity is provided with a discharging cylinder 6, the discharging cylinder is communicated with the conical mixing cavity, and the discharging cylinder is provided with a discharging valve 7.

[0065] The discharging valve is configured to control the communication or closure between the discharging cylinder and the conical mixing cavity.

[0066] For example, the pitch mixing machine is a high-speed mixing machine, the rotating speed can reach more than 1000 revolutions per minute, the two materials can be fully and uniformly mixed, there is no dead angle in the mixing machine, and there is no wall scraping during mixing. The conical mixing cavity is provided with a cooling water jacket, and a guide plate is arranged in the jacket to prevent short circuit of the cooling water and cool and cool the high-speed rotation of the conical mixing cavity.

[0067] In one specific embodiment, the mechanical fusion machine comprises a mounting platform 8, a second driving system 9, a linear driving member 10 and a mechanical fusion member, the mechanical fusion member comprises the fusion cavity 11, the stirring blade 12 and the stirring cavity 13, the second driving system is configured to drive the stirring cavity to rotate, the upper part of the fusion cavity is provided with a fusion cavity sealing cover body 14, the upper part of the fusion cavity sealing cover body is provided with a feeding part 15, the feeding part is configured to add the needle coke and pitch after mixing, and the linear driving member is configured to drive the fusion cavity sealing cover body to be buckled on the fusion cavity or away from the fusion cavity.

[0068] A discharging channel 16 is arranged between the stirring cavity and the fusion cavity, a discharging part 17 is arranged on the side of the fusion cavity, the discharging part is communicated with the discharging channel, and the discharging part is provided with a discharging valve 18.

[0069] The stirring cavity is connected with the second driving system through a stirring shaft 20, and a gas seal structure is used for sealing between the stirring shaft and the fusion cavity;

[0070] The cloth bag filtering device 19 is arranged on the fusion cavity sealing cover, and the cloth bag filtering device is communicated with the fusion cavity sealing cover.

[0071] Exemplarily, the sealing between the stirring shaft and the fusion cavity is a gas seal structure, and the gas required for the gas seal can use compressed air or inert gas such as nitrogen. The cloth bag filtering device is arranged on the fusion cavity sealing cover, and the gas in the fusion cavity is expanded by heating or other gas enters the working cylinder, which can be discharged through the cloth bag; at the same time, air is supplemented through the cloth bag to generate a slight vacuum in the working cavity due to the discharge. The linear driving member is provided, in order to facilitate cleaning of the fusion cavity, the linear driving member drives the sealing cover to conveniently lift or lower the sealing cover, so as to facilitate cleaning or maintenance of the fusion cavity.

[0072] In a specific embodiment, the granulating carbonization machine comprises a device frame 21, the conical cavity 22, the heating device (not shown in the figure, the heating device can use a heating wire or a heating coil, and the heating wire or the heating coil is wound outside the cavity of the conical cavity for heating), the stirring main shaft 23 (a plurality of stirring blades are uniformly arranged on the stirring main shaft for stirring), the third driving system (not shown in the figure, the third driving system is a driving motor) and the second linear driving member 25.

[0073] The conical cavity is provided with a cavity cover plate 26, the stirring main shaft penetrates through the cavity cover plate and enters the conical cavity, the cavity cover plate is communicated with an air inlet pipeline 27 and an air outlet pipeline, the air outlet pipeline comprises a waste gas pipeline 28 and an exhaust pipeline 29, and the waste gas pipeline is communicated with a waste gas treatment system 30.

[0074] The third driving system is configured to drive the stirring main shaft to rotate, and the second linear driving member is configured to drive the cavity cover plate and the stirring main shaft to move linearly.

[0075] The lower part of the conical cavity is communicated with a discharging pipe 31, the discharging pipe is provided with a discharging blocking member, and the discharging blocking member is driven by a third linear driving member 32 to open or close the discharging pipe.

[0076] Exemplarily, the cavity cover plate and the stirring main shaft can be lifted and lowered together, which is convenient for cleaning the conical cavity. The temperature rising curve can be set according to the process requirement, the temperature is gradually increased during the stirring process, and the sealing effect is good. The conical cavity is uniform in secondary granulation.

[0077] In a specific embodiment, the first driving system, the second driving system and the third driving system all comprise driving motors.

[0078] In one specific embodiment, the linear drive, the second linear drive and the third linear drive each comprise a drive cylinder or drive ram.

[0079] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A needle coke prilling coating system comprising a pitch mixer, a mechanical fuser, and a prilling carbonizer, characterized by: The asphalt mixing machine, the mechanical fusion machine and the granulation carbonization machine are located in the same production workshop; The asphalt mixing machine, the mechanical fusion machine and the granulation carbonization machine are arranged in a triangular shape; The distance between the asphalt mixing machine and the mechanical fusion machine is d1, and the distance between the mechanical fusion machine and the granulation carbonization machine is d2; The distance d1 between the asphalt mixing machine and the mechanical fusion machine is equal to the distance d2 between the mechanical fusion machine and the granulation carbonization machine; The distance d1 between the asphalt mixing machine and the mechanical fusion machine is not greater than 5m, and the distance d2 between the mechanical fusion machine and the granulation carbonization machine is not greater than 5m; The distance d1 between the asphalt mixing machine and the mechanical fusion machine is not less than 0.5m, and the distance d2 between the mechanical fusion machine and the granulation carbonization machine is not less than 0.5m.

2. A needle coke prilling coating system according to claim 1, characterized in that: The asphalt mixing machine comprises a conical mixing cavity and a central rotating shaft arranged along the central axis of the conical mixing cavity, and the needle coke and asphalt are uniformly mixed by rotation of the central rotating shaft; The mechanical fusion machine comprises a fusion cavity and a stirring blade, the stirring blade comprises a fixed part and an extrusion blade arranged at the front end of the fixed part, a stirring cavity is arranged in the fusion cavity, the stirring blade is arranged along the radial direction of the stirring cavity, the stirring blade rotates relative to the cavity wall of the stirring cavity, and the extrusion blade is configured to extrude the mixed needle coke and asphalt against the cavity wall of the stirring cavity; The granulation carbonization machine comprises a conical cavity, a heating device configured to heat the conical cavity, and a stirring main shaft configured to uniformly heat the fused needle coke and asphalt; The rotating speed of the central rotating shaft is not less than 1000rpm, the conical mixing cavity comprises a mixing cavity and a water-cooled jacket, cooling water is introduced into the water-cooled jacket to cool the needle coke and asphalt in the mixing cavity, a plurality of guide plates are arranged in the water-cooled jacket, and the guide plates are configured to guide the flow direction of the cooling water; The mechanical fusion machine further comprises a cloth bag filtering device, the cloth bag filtering device is arranged at the upper part of the fusion cavity, and the cloth bag filtering device is in communication with the inside of the fusion cavity.

3. A needle coke prilling coating system according to claim 2, wherein: The asphalt mixing machine comprises a mounting bracket, a first driving system and a mixing system, the first driving system and the mixing system are mounted on the mounting bracket, the mixing system comprises the conical mixing cavity and the central rotating shaft, the first driving system is configured to rotate the central rotating shaft, a sealing upper cover is arranged on the conical mixing cavity, a discharge cylinder is arranged at the lower part of the conical mixing cavity, the discharge cylinder is in communication with the conical mixing cavity, and a discharge valve is arranged on the discharge cylinder; The discharge valve is configured to control the communication or closure between the discharge cylinder and the conical mixing cavity.

4. The needle coke prilling enrober system of claim 2, wherein: The mechanical fusion machine comprises a mounting platform, a second driving system, a linear driving member and a mechanical fusion member, the mechanical fusion member comprises the fusion cavity, the stirring blade and the stirring cavity, the second driving system is configured to drive the stirring cavity to rotate, a fusion cavity sealing cover is arranged on the upper portion of the fusion cavity, an upper feeding portion is arranged on the fusion cavity sealing cover, the upper feeding portion is configured to add mixed needle coke and pitch, the linear driving member is configured to drive the fusion cavity sealing cover to be buckled on the fusion cavity or away from the fusion cavity; A discharging channel is arranged between the stirring cavity and the fusion cavity, a discharging portion is arranged on the side of the fusion cavity, the discharging portion is communicated with the discharging channel, and the discharging portion is provided with a discharging valve; The stirring cavity is connected with the second driving system through a stirring shaft, and the stirring shaft and the fusion cavity are sealed by using a gas seal structure; The cloth bag filtering device is arranged on the fusion cavity sealing cover and communicated with the fusion cavity sealing cover.

5. The needle coke prilling enrober system of claim 2, wherein: The granulating carbonization machine comprises a device frame, the conical cavity, the heating device and the stirring main shaft, and a third driving system and a second linear driving member; A cavity cover plate is arranged on the conical cavity, the stirring main shaft penetrates through the cavity cover plate and extends into the conical cavity, the cavity cover plate is communicated with an air inlet pipeline and an air outlet pipeline, the air outlet pipeline comprises a waste gas pipeline and an exhaust pipeline, and the waste gas pipeline is communicated with a waste gas treatment system; The third driving system is configured to drive the stirring main shaft to rotate, and the second linear driving member is configured to drive the cavity cover plate and the stirring main shaft to move linearly; A discharging pipe is communicated with the lower portion of the conical cavity, the discharging pipe is provided with a discharging blocking member, and the discharging blocking member is driven by a third linear driving member to open or close the discharging pipe.

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