Discharging system and method for graphitization production

Abstract

The invention belongs to the technical field of graphitization, and provides a graphitization production discharging system and method.The system comprises a negative pressure providing device located on the ground of a graphitization plant, and one end of the negative pressure providing device is connected with a negative pressure air pipe; the one or more movable mechanisms are located above the graphitization furnace, and the movable mechanisms are suitable for moving above the graphitization furnace; the material suction equipment is connected to the movable mechanism and suitable for moving along with the movable mechanism, and the material suction equipment comprises one or more material suction machine bins and one or more material suction pipes; the negative pressure air pipe is suitable for being connected to a material suction machine bin. The material suction pipe comprises a material suction pipe body, a connecting end and a material suction nozzle, the connecting end and the material suction nozzle are located at the two ends of the material suction pipe body, the connecting end is suitable for being communicated with a material suction machine bin, and the material suction nozzle is suitable for being inserted into furnace materials of the graphitization furnace. According to the graphitization production discharging system and method, the engineering cost of the material suction procedure can be reduced, and the reliability and efficiency of the material suction procedure are improved.

Description

TECHNICAL FIELD

[0001] The present application mainly relates to the field of graphitization technology, and particularly relates to a graphitization production discharging system and method. BACKGROUND

[0002] After the product power supply of the graphitization furnace is completed, the material in the furnace needs to be taken out as soon as possible in a high-temperature state. The material in the furnace includes graphite products, graphite electrodes, graphite cathodes, graphite crucibles containing lithium battery negative materials, and auxiliary materials (resistance material and heat preservation material), etc. The auxiliary material in the graphite product processing process is powder and granular coke, which is easy to produce dust pollution when discharged at high temperature. In the prior art, the equipment used by the graphitization plant to suck the coke auxiliary material out of the furnace is a suction crane (also known as a multifunctional crane). A suction crane system including a negative pressure fan, dust removal, flue gas cooling, a material bin, and a suction pipe that can extend into the furnace is installed on the suction crane. The suction crane runs on a crane track in the plant, and the crane track is located above the furnace body as a whole. The overall volume is large and the system structure is complex. After the suction crane sucks the material in the furnace, it moves to the auxiliary material processing equipment to process and discharge the material, and reciprocally runs.

[0003] The suction crane in the current field has many shortcomings, such as the following. 1. Since all the equipment runs in the air crane, it is difficult to arrange water cooling pipelines in the air, so the negative pressure fan and flue gas cooling can only use air cooling, which has low cooling efficiency, resulting in that the dust remover can only use a metal mesh dust remover with low dust removal efficiency and high cost. The temperature requirement of the auxiliary material of the graphitization furnace needs to be below 400℃ to ensure the reliable and safe operation of the system. 2. The total weight of the suction crane itself and the weight of the suction equipment is more than 300 tons, and the cost of the crane itself is about 4 million yuan. In order to realize the normal operation of the suction crane, the carrying capacity of the plant needs to be increased, which leads to more than doubled cost of the plant. For example, the cost of a main plant of a medium-sized graphitization of 10,000 square meters directly increases from 25 million yuan to about 50 million yuan due to the suction crane. 3. The suction crane has a large volume and occupies a large space. When it works, other production operations in the area around it and between its working point and the auxiliary material processing system will be affected by the suction crane in the air, which increases the process difficulty and complexity. 4. The overall equipment efficiency of the suction crane in the air is low, and the energy consumption is large, including the driving energy consumption of the crane, which leads to high production cost. 5. The suction crane is a product of the national environmental protection policy, which replaces the previous grab bucket and non-systematic suction machine. With the large-scale of the graphitization production system, the suction efficiency of the suction crane is required to be higher and the suction temperature is required to be higher. The suction crane can only develop in a larger direction, and higher heat-resistant materials are used to make the suction pipe and the dust removal bag, which makes the cost and equipment operation cost higher, and becomes more unreasonable for the plant to configure investment. Therefore, there is an urgent need for an improved scheme of a low-cost reliable suction crane in the field. SUMMARY

[0004] The technical problem to be solved by this application is to provide a graphitization production feeding system and method that can reduce the engineering cost of the feeding process and improve the reliability and efficiency of the feeding process.

[0005] To address the aforementioned technical problems, this application provides a graphitization production discharge system suitable for graphitization plants. The graphitization plant includes a graphitization furnace, which is suitable for loading materials. The graphitization production discharge system includes: a negative pressure providing device located on the ground of the graphitization plant, one end of which is connected to a negative pressure duct; one or more movable mechanisms located above the graphitization furnace, adapted to move above the furnace; and a material suction device connected to and adapted to move with the movable mechanisms. The material suction device includes one or more suction chambers and one or more suction pipes. The negative pressure duct is adapted to connect to the suction chambers. The suction pipe includes a suction pipe body and connecting ends and suction nozzles at both ends of the suction pipe body. The connecting ends are adapted to communicate with the suction chambers, and the suction nozzles are adapted to insert into the materials inside the graphitization furnace.

[0006] Optionally, the system also includes a furnace discharge auxiliary material silo, which is located close to the ground. The suction machine silo includes a discharge port, and the furnace discharge auxiliary material silo is adapted to receive the furnace material discharged from the discharge port.

[0007] Optionally, the system also includes a belt conveyor device, which is set close to the ground, wherein a discharge port is provided at the lower end of the auxiliary material silo, and the belt conveyor device is located below the discharge port.

[0008] Optionally, the graphitization plant includes a mobile graphitization plant, which includes a mobile graphitization furnace. The mobile graphitization furnace is adapted to be moved to the furnace exit station after the graphitization process is completed, wherein the material suction device is located at the furnace exit station.

[0009] Optionally, there are multiple auxiliary material bins for furnace discharge. When the movable graphitization furnace is located at the furnace discharge station, the multiple auxiliary material bins for furnace discharge are respectively arranged on both sides of the movable graphitization furnace.

[0010] Optionally, the graphitization plant includes a fixed graphitization plant, which includes a fixed graphitization furnace. The fixed graphitization furnace is fixedly located at the production station, wherein the material suction device is located at the production station.

[0011] Optionally, the system further includes a connecting pipe and one or more quick-connect interfaces located on the connecting pipe, the suction chamber being adapted to connect or disconnect from the connecting pipe via the quick-connect interfaces, wherein the connecting pipe is in communication with the negative pressure duct.

[0012] Optionally, the negative pressure providing device includes a flue gas liquid cooler connected to the negative pressure duct.

[0013] Optionally, the negative pressure providing device further includes a power control unit, a negative pressure fan, a bag filter, and a cyclone dust collector connected in sequence.

[0014] Optionally, the system also includes a powder and air separation device, which is installed in the suction chamber.

[0015] Optionally, the inner wall of the suction chamber, the suction pipe body, and the suction nozzle are made of stainless steel.

[0016] Optionally, the graphitization furnace is used to produce powdered anode materials.

[0017] Optionally, the system also includes a cooling circulation device, which is built into the suction pipe body of the suction pipe.

[0018] Another aspect of this application proposes a graphitization production discharge method applicable to the graphitization production discharge system proposed in this application. The graphitization production discharge method includes the following steps: moving the suction device above the graphitization furnace via a movable mechanism; inserting the suction nozzle of the suction pipe into the furnace material and activating the negative pressure supply device; and sucking the furnace material into the suction machine chamber through the suction pipe.

[0019] Optionally, the graphitization plant includes a mobile graphitization plant, which includes a mobile graphitization furnace. The method further includes: before moving the suction device above the graphitization furnace via a movable mechanism, setting one or more auxiliary material hoppers for furnace discharge on one or both sides of the furnace discharge station, and moving the mobile graphitization furnace to the furnace discharge station; and after the material in the furnace is sucked into the suction machine hopper through the suction pipe, opening the discharge port of the suction machine hopper and discharging the material in the furnace sucked into the suction machine hopper into the auxiliary material hopper for furnace discharge.

[0020] Optionally, the graphitization plant includes a fixed graphitization plant, which includes a fixed graphitization furnace. The method further includes: fixing the fixed graphitization furnace at the production station before moving the material suction device above the graphitization furnace via a movable mechanism; and after moving the material suction device above the graphitization furnace via the movable mechanism, connecting or disconnecting the material suction chamber from the connecting pipe via a quick-connect interface, wherein the connecting pipe is connected to the negative pressure duct of the negative pressure supply device.

[0021] Compared with existing technologies, this application has the following advantages: By installing a negative pressure supply device located on the ground of the graphitization plant, and cooperating with a movable material suction device above the graphitization furnace, this application replaces the existing overhead crane solution, thereby enabling the material suction process in graphitization production to be carried out in a lower cost and safer, more reliable manner. Based on this, the negative pressure supply device located on the ground and the movable material suction device can be specifically expanded and optimized, achieving efficient, safe, economical, and reliable material suction and discharge in different graphitization production scenarios, including fixed and mobile graphitization furnaces. Attached Figure Description

[0022] The accompanying drawings are included to provide a further understanding of this application; they are incorporated into and constitute a part of this application. The drawings illustrate embodiments of this application and, together with this specification, serve to explain the principles of this application. In the drawings: Figure 1 This is a system block diagram of a graphitization production discharge system proposed in this application; Figure 2 Is it like this? Figure 1 A schematic diagram of the negative pressure providing device in the illustrated embodiment; Figure 3 Is it like this? Figure 1 A schematic diagram of the movable mechanism and the material suction device in the illustrated embodiment; Figure 4 and Figure 5 They are as follows Figure 1 The illustrated embodiments are shown in side and top views when applied in a mobile graphitization plant. Figure 6 and Figure 7 They are as follows Figure 1 The illustrated embodiments are shown in side and top views of a fixed-type graphitization plant; and Figure 8 This is a flowchart of a graphitization production discharge method proposed in this application. Detailed Implementation

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of this application. For those skilled in the art, these drawings can be applied to other similar scenarios without creative effort. Unless obvious from the context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0024] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" are not specifically singular and may include plural forms. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0025] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0026] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0027] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0028] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application. In addition, although the terminology used in this application is selected from commonly known and used terms, some terms mentioned in this application's specification may have been chosen by the applicant according to his or her judgment, and their detailed meanings are explained in the relevant sections of this description. Moreover, this application should be understood not only through the actual terms used, but also through the meaning implied by each term.

[0029] It should be understood that when a component is referred to as "on another component," "connected to another component," "coupled to another component," or "in contact with another component," it can be directly on, connected to, coupled to, or in contact with that other component, or there may be an intervening component. In contrast, when a component is referred to as "directly on another component," "directly connected to," "directly coupled to," or "directly in contact with" another component, there is no intervening component. Similarly, when a first component is referred to as "electrically contacting" or "electrically coupled to" a second component, there is an electrical path between the first and second components that allows current to flow. This electrical path may include capacitors, coupled inductors, and / or other components that allow current to flow, even if there is no direct contact between the conductive components.

[0030] An embodiment of this application is referred to. Figure 1A graphitization production material feeding system 100 (hereinafter referred to as system 100) is proposed. Compared with the traditional overhead crane solution, by changing the equipment configuration and usage conditions, a combination of general-purpose equipment with higher efficiency and more reasonable manufacturing and cost is adopted to achieve low investment cost, high material feeding efficiency, high material feeding temperature, and no impact on other production operations on the production line.

[0031] System 100 is suitable for graphitization plants, which include graphitization furnaces suitable for loading materials into the furnaces. System 100 includes a negative pressure providing device 101, movable mechanisms 102 (not limited in number, and can be one or more), and a material suction device 103. Unlike traditional overhead material suction trolleys, the negative pressure providing device 101 is located on the ground of the graphitization plant. Furthermore, the movable mechanism 102 is located above the graphitization furnace, and the material suction device 103 is connected to the movable mechanism 102 and adapted to move above the graphitization furnace following the movable mechanism 102 to perform the material suction operation. For example, the movable mechanism 102 can be a gantry frame with a wheeled movement structure, allowing for a high degree of freedom of movement.

[0032] Compared with existing technologies, Figure 1 The system 100 shown breaks through the limitations of traditional graphitization plants that can only use overhead suction cranes or other operating methods located in the air. By placing the negative pressure supply device 101 on the ground of the graphitization plant, it saves the expenditure required to increase the load-bearing capacity of the overhead support structure. Furthermore, the negative pressure supply device 101 can be designed as a more complex integrated system with more diverse functions such as cooling and dust removal. Preferably, Figure 2 This illustrates an implementation of a negative pressure providing device 101 suitable for system 100, according to... Figure 2 The negative pressure providing device 101 specifically includes a flue gas liquid-cooled cooler 15 connected to a negative pressure duct 16. For example, the negative pressure duct 16 can be a flexible metal pipe or a telescopic conduit, allowing for small-range movement. Furthermore, the negative pressure providing device 101 also includes, in sequence, a power control unit 11 (a sealed space where a fresh air system and air conditioning equipment can be installed), a negative pressure fan 12 (including a high-pressure centrifugal fan, a Roots blower, and a water ring vacuum pump, which can also be liquid-cooled), a bag filter 13 (which can be pulse-type, simple to manufacture, low in cost, with the best dust removal efficiency and stable operation, achieving energy saving by reducing negative pressure loss), and a cyclone dust collector 14. According to traditional overhead crane methods, since the entire equipment is integrated in the space above the graphitization furnace, if a liquid cooling method is used, water pipe wiring is difficult, thus only air cooling can be used, resulting in low cooling efficiency. However, in this embodiment, by placing the negative pressure providing device 101 on the ground, liquid cooling becomes possible.

[0033] on the other hand,Figure 3 A schematic diagram shows the suction device 103 mounted on the movable mechanism 102. According to... Figure 3 The material suction device 103 includes a material suction chamber 21 (the number of which is not limited in this application) and multiple material suction pipes 22 (the number of which is not limited in this application). The negative pressure duct 16 of the negative pressure providing device 101 is adapted to be connected to the material suction chamber 21. More specifically, the material suction pipe 22 includes a material suction pipe body 220 and connecting ends 221 and suction nozzles 222 located at both ends of the material suction pipe body 220. The connecting ends 221 are adapted to communicate with the material suction chamber 21, and the suction nozzles 222 are adapted to be inserted into the material inside the graphitization furnace. In this embodiment, since multiple material suction pipes 22 are provided, the connecting ends 221 of these material suction pipes 22 are all connected to the material suction chamber 21 through a collecting pipe 223. In a further preferred embodiment, the material suction pipe 22 also has a built-in cooling circulation device 224, so that the material suction pipe 22 can quickly cool the material it sucks up while performing the material suction process, thereby significantly increasing the furnace exit temperature. Based on this, the internal walls of the suction chamber 21 can also be protected with cooling water jackets to ensure safe operation at high furnace exit temperatures. It should be explained here that, according to actual verification, through methods such as... Figure 3 The suction pipe 22, which has a built-in cooling circulation device 224, can raise the furnace exit temperature of graphitization production to over 800°C (the conventional suction method of the suction trolley can only reach an exit temperature of around 400°C). It should be noted that the exit temperature refers to the highest temperature of the material when it exits the furnace. As mentioned above, due to the wiring limitations of the liquid cooling pipeline, the traditional suction trolley method cannot use liquid cooling. Therefore, by setting the negative pressure supply device 101 on the ground, a liquid cooling loop can also be provided to the cooling circulation device 224, so that the suction pipe 22 can use a highly efficient liquid cooling method to quickly and directly cool the material sucked up from the furnace, thereby significantly increasing the exit temperature.

[0034] After the negative pressure supply device 101 is activated and the suction nozzle 222 is inserted into the material inside the furnace, the material inside the furnace can be easily sucked into the suction chamber 21 due to the negative pressure state. This allows for direct transfer and recycling through the suction chamber, or the material sucked into the suction chamber 21 can be transferred to other equipment for recycling. Since the suction device 103 is mounted on the movable mechanism 102, it can move flexibly above the graphitization furnace, making the suction process more flexible and efficient, and offering greater potential for adaptation to different production scenarios. In the graphitization field, there are different production methods, such as the traditional fixed graphitization production method and the relatively new mobile graphitization production method. The graphitization production discharge system 100 proposed in this application can effectively adapt to both different graphitization production methods. The following refers to... Figures 4-7 To explain, among other things, Figure 4and Figure 5 An embodiment corresponding to the mobile graphitization production method is shown. Figure 6 and Figure 7 An example of a fixed graphitization production method is shown.

[0035] First refer to Figure 4 and Figure 5 The graphitization plant is specifically implemented as a mobile graphitization plant, that is, a graphitization plant including a mobile graphitization furnace 40, which is suitable for being moved to a location such as [location missing] after the graphitization process is completed. Figure 4 The furnace exit station 400 shown is where the improved material suction device 103 proposed in this application is located. More preferably, in this embodiment, to better implement material transfer after suction, a furnace exit auxiliary material silo 42 is added to the system architecture. The furnace exit auxiliary material silo 42 can be installed near the factory floor via a support structure, or fixedly located on the factory floor. According to... Figure 4 The suction chamber 21 includes a discharge port 210. The movable graphitization furnace 40 contains furnace material 41. During the suction process, the furnace material 41 is sucked out to the suction chamber 21 through the suction pipe 22. Afterward, the furnace material 41 discharged from the discharge port 210 can be received through the furnace auxiliary material bin 42. Figure 4 The shaded area represents the material inside the furnace. Above the suction chamber 21, there is a pulley structure that can drive the suction chamber 21 and the suction pipe 22 to move laterally on the gantry structure, so as to pick up materials from different positions. Figure 4 The diagram schematically illustrates that the furnace auxiliary material silo 42 has a feed inlet 421, which is opposite to the discharge outlet 210 of the suction machine silo 21. Preferably, in this embodiment, a belt conveyor 45 is also provided. The belt conveyor 45 can be installed near the factory floor via a support structure or fixedly located on the factory floor. The lower end of the furnace auxiliary material silo 42 has a discharge outlet 422, and the belt conveyor 45 is located below the discharge outlet 422. After the suction machine silo 21 completes its suction, the material in the furnace can be released into the furnace auxiliary material silo 42, and further transported away by the belt conveyor 45 through the open discharge outlet 422. Figure 4 It can also be seen that the suction pipe 22 in this embodiment has a built-in cooling circulation device 224. One end of the coolant inlet pipe 43 and the coolant outlet pipe 44 are respectively connected to the cooling circulation device 224, and the other end is integrated into a device such as... Figure 2 In the negative pressure supply device 101 shown, the suction pipe 22 can rapidly cool the material sucked up from the furnace while performing the suction process, so as to increase the furnace exit temperature.

[0036] Further reference Figure 5In this embodiment, there are multiple auxiliary material hoppers 42 for furnace discharge. When the movable graphitization furnace 40 is located at the furnace discharge station 400, the multiple auxiliary material hoppers 42 are respectively arranged on both sides of the movable graphitization furnace 40. After the movable graphitization furnace 40 completes the preceding preparation process, it moves to the furnace discharge station 400. The furnace discharge process (i.e., the material suction process) is completed by using the negative pressure providing device 101, movable mechanism 102, suction machine hopper 21, and suction pipe 22 pre-set at the furnace discharge station 400, in conjunction with the multiple auxiliary material hoppers 42. Figure 5 As can be seen, since the suction pipe 22 and the suction chamber 21 can move along with the movable mechanism 102, and the suction pipe 22 and the suction chamber 21 can also move relative to the movable mechanism 102, and the number of both can be set to one or more, under some working conditions, multiple suction pipes 22 can be used to simultaneously suction a movable graphitization furnace 40. Preferably, this can be achieved through methods such as... Figure 4 The belt conveyor 45 shown can transfer the sucked-out material from the furnace, thereby achieving the purpose of equipment expansion and efficient material suction in the material suction process.

[0037] On the other hand, according to Figure 6 and Figure 7 The graphitization plant is implemented as a fixed graphitization plant, that is, a graphitization plant including a fixed graphitization furnace 50. The fixed graphitization furnace 50 is fixedly located at production station 500, and the material suction device 103 is arranged at production station 500. (For a clearer understanding...) Figure 7 , Figure 7 The illustration shows two adjacent fixed graphitization furnaces 50. Preferably, in this embodiment, a connecting pipe 51 is provided between the two adjacent fixed graphitization furnaces, and multiple quick-connect interfaces 52 (the number is not limited in this application) are provided on the connecting pipe 51. The material suction chamber 21 can be connected via... Figure 6 and Figure 7 The quick-connect end 53 is quickly inserted into or disconnected from the quick-connect interface 52, thereby quickly connecting or disconnecting from the connecting pipe 51. The connecting pipe 51 and such Figure 2 The negative pressure duct 16 shown is connected. For the fixed graphitization furnace 50, since it cannot be moved during production, the structure of connecting pipe 51 and quick-connect interface 52 allows multiple suction chambers 21 to be quickly connected or disconnected from the negative pressure duct 16 led out from the negative pressure supply device 101. Furthermore, multiple suction pipes 22 can be used simultaneously to suction material from the same fixed graphitization furnace 50 or multiple fixed graphitization furnaces 50, thereby improving suction efficiency. It is understood that, although only... Figure 4 and Figure 5 The present invention employs a furnace discharge auxiliary material silo 42, but this application is not limited thereto; the furnace discharge auxiliary material silo may also be located in a fixed graphitization plant.

[0038] In different embodiments of this application, the material being sucked up in the material suction process is the material inside the furnace. This material includes a graphite crucible containing graphite products, graphite electrodes, graphite cathodes, or lithium-ion battery anode materials, or powdered anode materials, as well as auxiliary materials for production (resistance materials and insulation materials). In some application scenarios of this application, the material sucked up is auxiliary material (i.e., including resistance materials and insulation materials); while in other application scenarios, if the material being removed is powdered anode material, a powder and air separation device can be added to the material suction chamber. In such embodiments, the inner wall of the material suction chamber, the suction pipe body, and the suction nozzle can also be made of stainless steel to achieve rapid and low-cost box-type graphitization furnace production under high-temperature conditions. The aforementioned production method of producing powdered anode materials through a graphitization furnace is also known in the art as a box-type graphitization production method.

[0039] Another aspect of this application refers to Figure 8 A graphitization production feedout method 60 (hereinafter referred to as method 60) is proposed, applicable to the graphitization production feedout system proposed in any embodiment of this application, such as... Figure 1 The system 100 is shown. Flowcharts are used in this application to illustrate the operations performed by the system according to embodiments of this application. It should be understood that the preceding or following operations are not necessarily performed in exact order. Instead, various steps can be processed in reverse order or simultaneously. Furthermore, other operations may be added to these processes, or one or more steps may be removed from these processes. See details... Figure 8 Method 60 includes the following steps: Step 61 is to move the suction device above the graphitization furnace by means of a movable mechanism; Step 62 is to insert the suction nozzle of the suction pipe into the material inside the graphitization furnace and start the negative pressure supply device; Step 63 is to suck the material inside the furnace into the suction machine chamber through the suction pipe.

[0040] Furthermore, depending on the type of graphitization plant, method 60 can be implemented with different detailed steps. Firstly, for a mobile graphitization plant containing a mobile graphitization furnace, method 60 further includes the following steps: before performing step 61, setting one or more auxiliary material silos for furnace discharge on one or both sides of the furnace discharge station, and moving the mobile graphitization furnace to the furnace discharge station; and after performing step 63, opening the discharge port of the suction hopper, and discharging the furnace material sucked into the suction hopper to the auxiliary material silo for furnace discharge. On the other hand, if the graphitization plant is a fixed graphitization plant containing a fixed graphitization furnace, method 60 further includes: before performing step 61, fixing the fixed graphitization furnace at the production station; and after performing step 61, connecting or disconnecting the suction hopper from the connecting pipe via a quick-connect interface, wherein the connecting pipe is connected to the negative pressure duct of the negative pressure supply device. The following is a brief introduction to the material suction operation of a fixed graphitization furnace in a specific implementation scenario. First, negative pressure pipelines are installed on the side of each fixed graphitization furnace, and appropriate quick-connect interfaces are set on the connecting pipelines. The material suction equipment consists of two parts: a movable suction chamber and a movable moving mechanism. The suction chamber is connected to the connecting pipeline via quick-connect interfaces; multiple suction chambers can be set. Further, one end of the suction pipe is connected to the suction chamber with a flexible hose, and the other end is inserted into the material inside the furnace to prepare for suction. The movable suction pipe rack / gantry (moving mechanism) only needs to move a small range above the fixed graphitization furnace to suction material. After filling one movable negative pressure suction chamber, the connecting pipeline (e.g., negative pressure pipe) is disconnected, and it moves to the next suction chamber to connect the pipeline and continue the suction operation. After the suction chamber is filled with material, it is disconnected from the connecting pipeline and moved to the furnace material processing center for discharge, and then reused. Since method 60 can use the aforementioned system 100, other details regarding method 60 can also be found in the preceding text. Figures 1-7 The explanation will not be elaborated here.

[0041] The graphitization production discharge system and method proposed in this application, by installing a negative pressure supply device on the factory floor and equipping it with a suction pipe and suction chamber that can move above the graphitization furnace, reduces the impact of the suction process on other equipment, lowers costs, and allows for the expansion of liquid cooling methods. The improved scheme proposed in this application completely replaces the existing overhead crane discharge method that moves through the factory floor. Because the entire system is located on the ground, the air cooling method of the overhead crane can be adjusted to water cooling, increasing the upper limit of the material discharge temperature. Furthermore, the overall equipment layout of the system is convenient, allowing for simultaneous discharge from one or more furnaces, resulting in low discharge costs and high efficiency. This application achieves low investment, low operating costs, high efficiency, and furnace discharge at higher temperatures; it also achieves zero emissions of furnace discharge pollution and reduces operational complexity. The key to this application lies in breaking away from established thinking patterns and transforming standardized equipment in a traditional, mature industry. This involves modifying the graphitization furnace system, the operating environment and conditions, the equipment's design and compatibility, and fully utilizing the inherent advantages of the equipment facilities. This comprehensive upgrade significantly reduces equipment manufacturing costs, significantly reduces operating costs, significantly improves operating efficiency, and significantly reduces maintenance difficulty, thus achieving genuine energy conservation and emission reduction. Based on actual production verification, the value achievable by the graphitization production discharge system and method of this application is listed below.

[0042] 1. The graphitization production discharge system of this application costs only one-third of the cost of a traditional suction crane with the same suction capacity. The negative pressure fan and the flue gas liquid cooling machine adopt liquid cooling (e.g., water cooling), which increases the fan efficiency by 50% and the cooling efficiency by 300%; and the dust collector can therefore use the lowest cost and best dust removal effect bag filter.

[0043] 2. Reduce the difficulty and cost of workshop and factory construction by more than 50%.

[0044] 3. Material suction efficiency increased by 500%. Traditional overhead crane methods have very low material suction efficiency because material cannot be discharged simultaneously after suction, and the transferred material is difficult. However, in some preferred embodiments of this application, by using a furnace auxiliary material hopper or by quickly connecting the suction machine hopper through a connecting pipe, the graphitization furnace can be continuously suctioned, and the material suction efficiency is further improved by enhancing the cooling effect.

[0045] 4. To meet the needs of the production process, the furnace exit temperature (the temperature of the material during feeding) is increased to 800℃, reducing the damage of high temperature to the equipment, while the furnace exit temperature of the traditional overhead feeding trolley does not exceed 400℃.

[0046] 5. Reduce maintenance and repair difficulty, and extend the maintenance cycle by 100%.

[0047] 6. It occupies little space and does not affect other operations while in use.

[0048] 7. It can realize rapid material feeding operation of the same graphitization furnace or simultaneous operation of multiple graphitization furnaces.

Claims

1. A graphitization production material discharging system, characterized in that, Suitable for graphitization plants, the graphitization plant includes a graphitization furnace, the graphitization furnace is suitable for loading materials into the furnace, and the graphitization production discharge system includes: A negative pressure supply device is located on the ground of the graphitization plant, and one end of the negative pressure supply device is connected to a negative pressure duct. One or more movable mechanisms are located above the graphitization furnace, the movable mechanisms being adapted to move above the graphitization furnace; and A suction device, connected to the movable mechanism and adapted to move with the movable mechanism, wherein, The material suction device includes one or more suction chambers and one or more suction pipes; The negative pressure duct is adapted to be connected to the suction machine chamber; The suction pipe includes a suction pipe body and connecting ends and suction nozzles located at both ends of the suction pipe body. The connecting ends are adapted to communicate with the suction machine chamber, and the suction nozzles are adapted to be inserted into the material inside the graphitization furnace.

2. The graphitization production material discharging system as described in claim 1, characterized in that, It also includes a furnace auxiliary material silo, which is located close to the ground. The suction machine silo includes a discharge port, and the furnace auxiliary material silo is adapted to receive the furnace material discharged from the discharge port.

3. The graphitization production material discharging system as described in claim 2, characterized in that, It also includes a belt conveyor device, which is set close to the ground. The lower end of the auxiliary material silo is provided with a discharge port, and the belt conveyor device is located below the discharge port.

4. The graphitization production material discharging system as described in claim 2, characterized in that, The graphitization plant includes a mobile graphitization plant, which includes a mobile graphitization furnace. The mobile graphitization furnace is adapted to be moved to the furnace exit station after the graphitization process is completed, wherein the material suction device is located at the furnace exit station.

5. The graphitization production material discharging system as described in claim 4, characterized in that, The number of auxiliary material bins for furnace discharge is multiple. When the movable graphitization furnace is located at the furnace discharge station, the multiple auxiliary material bins for furnace discharge are respectively arranged on both sides of the movable graphitization furnace.

6. The graphitization production material discharging system as described in claim 1, characterized in that, The graphitization plant includes a fixed graphitization plant, which includes a fixed graphitization furnace. The fixed graphitization furnace is fixedly located at the production station, and the material suction device is located at the production station.

7. The graphitization production material discharging system as described in claim 6, characterized in that, It also includes a connecting pipe and one or more quick-connect interfaces located on the connecting pipe, the suction chamber being adapted to connect or disconnect from the connecting pipe via the quick-connect interfaces, wherein the connecting pipe is in communication with the negative pressure duct.

8. The graphitization production material discharging system as described in claim 1, characterized in that, The negative pressure supply device includes a flue gas liquid cooling machine connected to the negative pressure duct.

9. The graphitization production material discharging system as described in claim 8, characterized in that, The negative pressure providing device also includes a power control unit, a negative pressure fan, a bag filter, and a cyclone dust collector connected in sequence.

10. The graphitization production material discharging system as described in claim 1, characterized in that, It also includes a powder and air separation device, which is installed in the suction chamber.

11. The graphitization production material discharging system as described in claim 10, characterized in that, The inner wall of the suction chamber, the suction pipe body, and the suction nozzle are made of stainless steel.

12. The graphitization production feeding system as described in claim 10 or 11, characterized in that, The graphitization furnace is used to produce powdered anode materials.

13. The graphitization production material discharging system as described in claim 1, characterized in that, It also includes a cooling circulation device, which is built into the suction pipe body of the suction pipe.

14. A method for discharging materials in graphitization production, characterized in that, The graphitization production discharging system as described in claim 1, wherein the graphitization production discharging method comprises the following steps: The material suction device is moved above the graphitization furnace via a movable mechanism; Insert the suction nozzle of the suction pipe into the material inside the graphitization furnace and start the negative pressure supply device; The material inside the furnace is sucked into the suction chamber through the suction pipe.

15. The graphitization production discharge method as described in claim 14, characterized in that, The graphitization plant includes a mobile graphitization plant, which in turn includes a mobile graphitization furnace. The method further includes: Before moving the feeding device above the graphitization furnace via a movable mechanism, one or more auxiliary material hoppers for furnace discharge are installed on one or both sides of the discharge station, and the movable graphitization furnace is moved to the discharge station; and After the material in the furnace is sucked into the suction chamber through the suction pipe, the outlet of the suction chamber is opened, and the material in the furnace sucked into the suction chamber is discharged into the auxiliary material hopper.

16. The graphitization production discharge method as described in claim 14, characterized in that, The graphitization plant includes a fixed graphitization plant, and the fixed graphitization plant includes a fixed graphitization furnace. The method further includes: Before moving the material suction device above the graphitization furnace via the movable mechanism, the fixed graphitization furnace is fixed in place at the production station; and After the material suction device is moved above the graphitization furnace by the movable mechanism, the material suction chamber is connected or disconnected from the connecting pipe through the quick-connect interface, wherein the connecting pipe is connected to the negative pressure air duct of the negative pressure supply device.

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