Graphite particle manufacturing system

Abstract

The utility model provides a graphite particle manufacturing system, graphite particle manufacturing system includes reaction kettle, combustion component, gas-solid separator, intake pipe and exhaust pipe, reaction kettle includes outer shell and at least part is arranged in the inner shell of outer shell, inner shell and outer shell form the heating chamber, inner shell is used for holding reaction material, and combustion component is used for combustion component. The combustion assembly comprises a combustor and a combustion chamber arranged on one side of the combustor, the combustor is used for providing combustion gas for the combustion chamber, the combustion chamber communicates with a gas inlet of the heating cavity through a gas inlet pipe, a gas outlet of the heating cavity communicates with the combustor and the tail gas treatment device through an exhaust pipe, and the inlet end of the gas-solid separator communicates with the interior of the inner shell. And the gas output end of the gas-solid separation device is communicated with the combustor. The graphite particle manufacturing system can solve the problems of low heating efficiency and energy waste of a graphite particle manufacturing system in the prior art.

Description

Technical Field

[0001] This utility model relates to the technical field of graphite particles, and more specifically, to a graphite particle manufacturing system. Background Technology

[0002] Electrified new energy vehicles represent the future development direction of the automotive market, and their core component is the lithium-ion battery. With the promulgation and implementation of battery regulations, the ESG (Environmental, Social and Governance) concept has become a universally recognized standard and common language. Society has begun to pay attention to products that comply with ESG principles, and as an environmentally friendly material, anode material technology aligns with ESG principles. Therefore, there is also a greater demand for anode materials and their production.

[0003] In the production of artificial graphite materials, granulation is a crucial step to improve the performance of graphite materials, making them more suitable for applications such as batteries. Traditional granulation equipment, such as rotary kilns, VC granulation kettles, horizontal granulation kettles, and drum furnaces, while capable of continuous or intermittent production to meet the specific needs of different products, generally suffers from excessive energy consumption. Taking the VC granulation kettle as an example, in the production of artificial graphite, it heats a mixture of asphalt and petroleum coke to the required granulation temperature range of 550-750℃ through external resistance heating. During this process, the electricity consumption per ton can reach as high as 375-460 kWh. Considering that the efficiency of converting electrical energy to heat is approximately 80%, this means that a large amount of energy is lost before being converted into usable heat, significantly increasing costs.

[0004] Further analysis reveals that existing artificial graphite granulation equipment and processes, such as VC granulation kettles, while capable of continuous or intermittent granulation, suffer from low energy efficiency, primarily in two aspects: First, under electric heating mode, the energy consumption per ton of artificial graphite granulation far exceeds actual needs due to the efficiency loss in converting electrical energy into heat, directly increasing production costs. Second, the volatiles generated during granulation, although carrying a large amount of potential heat energy, are often simply discharged or disposed of due to the lack of effective recovery and utilization mechanisms, failing to be converted into actual production benefits, thus leading to energy consumption.

[0005] As can be seen from the above, existing graphite particle manufacturing systems suffer from low heating efficiency and energy waste. Utility Model Content

[0006] The main objective of this invention is to provide a graphite particle manufacturing system to solve the problems of low heating efficiency and energy waste in existing graphite particle manufacturing systems.

[0007] To achieve the above objectives, according to one aspect of the present invention, a graphite particle manufacturing system is provided. The graphite particle manufacturing system includes a reaction vessel, which includes an outer shell and an inner shell disposed at least partially inside the outer shell, forming a heating chamber between the inner shell and the outer shell, the inner shell being used to contain reactants; a combustion assembly, which includes a burner and a combustion chamber disposed on one side of the burner, the burner being used to supply combustion gas to the combustion chamber; an inlet pipe and an exhaust pipe, the combustion chamber being connected to the inlet of the heating chamber via the inlet pipe for providing high-temperature gas to heat the inner shell, the outlet of the heating chamber being connected to the burner and a tail gas treatment device via the exhaust pipe; and a gas-solid separator, the inlet end of which is connected to the interior of the inner shell for collecting volatiles in the reactants, the gas outlet end of the gas-solid separator being connected to the burner.

[0008] Furthermore, along the height direction of the reactor, the air inlet of the heating chamber is located at the bottom of the outer shell, and the air outlet of the heating chamber is located at the top of the outer shell. The reactor also includes a partition plate, which is located inside the heating chamber and divides the heating chamber into an upper space and a lower space along the height direction of the reactor. The air inlet is connected to the lower space. Along the circumference of the partition plate, the partition plate has multiple air passages arranged at intervals. Swirl tubes are located on the top surface of the partition plate, and each swirl tube is arranged in correspondence with an air passage. The swirl tubes are located at the outer edge of the air passages and are connected to the air passages. After the high-temperature gas flows through the multiple swirl tubes, a hot air swirling flow is formed in the upper space, flowing along the circumference of the inner shell and towards the air outlet.

[0009] Furthermore, the cyclone tube includes a guide tube wall, the first end of which is connected to the baffle plate. The first end of the guide tube wall is located at the outer edge of one end of the air outlet along the circumference of the baffle plate. The second end of the guide tube wall extends toward the top side of the outer casing and toward the side of the air outlet. Side tube walls are located on both sides of the guide tube wall. One end of the two side tube walls is connected to the guide tube wall, and the other ends of the two side tube walls are spaced apart to form guide openings.

[0010] Furthermore, the air vent is located inside the projection of the guide pipe wall onto one side of the partition; and / or the two side pipe walls are symmetrically arranged; and / or the line connecting the center of the circle containing the side pipe wall and the partition is perpendicular to the extension direction of the side pipe wall; and / or the guide pipe wall and the partition form an angle A, wherein the angle A satisfies 30°≤A≤60°; and / or the distance between the partition and the bottom surface of the outer shell is less than the distance between the partition and the top surface of the outer shell.

[0011] Furthermore, the combustion assembly also includes a natural gas pipe connected to the burner for supplying natural gas; a first control valve disposed on the natural gas pipe; a first pressure sensor and a first flow sensor disposed on the natural gas pipe; an air pipe connected to the burner for supplying air; a first fan disposed on the air pipe; a second pressure sensor and a second flow sensor disposed on the air pipe; and a controller connected to the first control valve, the first pressure sensor, the first flow sensor, the first fan, the second pressure sensor, and the second flow sensor via signal connections.

[0012] Furthermore, the combustion assembly also includes an igniter disposed inside the burner; a flame detector disposed inside the burner; a display disposed on the outer surface of the housing; a fourth pressure sensor and a first temperature sensor disposed on the intake pipe; and a controller that is signal-connected to the display, igniter, flame detector, fourth pressure sensor, and fourth flow sensor.

[0013] Furthermore, the first end of the exhaust pipe is connected to the outlet of the heating chamber, and the second end of the exhaust pipe forms a first pipeline connected to the burner and a second pipeline connected to the exhaust gas treatment device. The graphite particle manufacturing system includes a second fan, which is installed on the first end of the exhaust pipe; a fifth pressure sensor and a second temperature sensor, both installed on the first end of the exhaust pipe; an oxygen content detector, installed on the first end of the exhaust pipe; a second control valve, installed on the first pipeline; a sixth pressure sensor and a third temperature sensor, both installed on the first pipeline; and a third control valve, installed on the second pipeline.

[0014] Furthermore, the graphite particle manufacturing system includes a discharge pipe, one end of which is connected to the discharge port at the top of the inner shell, and the other end of which is connected to a gas-solid separator; a first insulation structure, which is sleeved on the discharge pipe; and a seventh pressure detection element and a fourth temperature detection element, both of which are installed on the discharge pipe.

[0015] Furthermore, the graphite particle manufacturing system also includes a gas return pipe, one end of which is connected to the gas output end of the gas-solid separation system, and the other end of which is connected to the burner; a third fan, which is installed on the gas return pipe; a second insulation structure, which is sleeved on the gas return pipe; a third pressure sensor, a fifth temperature sensor, a volatile matter concentration sensor, and a third flow sensor, which are installed on the gas return pipe; and a fourth control valve, which is installed on the gas return pipe and located at the end of the gas return pipe closest to the burner.

[0016] Furthermore, the graphite particle manufacturing system also includes a feeder located on one side outside the reactor, connected to the feed inlet at the top of the inner shell for supplying materials; and / or a nitrogen replenishment pipeline and a fourth flow detection device, the end of which is connected to the inner shell, and the fourth flow detection device is located on the nitrogen replenishment pipeline; and / or multiple temperature sensors, which are spaced apart on the inner shell along its circumferential and height directions.

[0017] According to the technical solution of this utility model, the graphite particle manufacturing system includes a reaction vessel, a combustion assembly, a gas-solid separator, an inlet pipe, and an exhaust pipe. The reaction vessel includes an outer shell and an inner shell, at least part of which is disposed inside the outer shell. A heating chamber is formed between the inner shell and the outer shell. The inner shell is used to contain the reactants. The combustion assembly includes a burner and a combustion chamber disposed on one side of the burner. The burner is used to supply combustion gas to the combustion chamber. The combustion chamber is connected to the inlet of the heating chamber through an inlet pipe to provide high-temperature gas to heat the inner shell. The outlet of the heating chamber is connected to the burner and the exhaust gas treatment device through an exhaust pipe. The inlet end of the gas-solid separator is connected to the interior of the inner shell to collect volatiles in the reactants. The gas output end of the gas-solid separator is connected to the burner.

[0018] As described above, the graphite particle manufacturing system of this application uses high-temperature gas from inside the burner to heat the inner shell used to contain the reactants within the heating chamber. The high-temperature gas is then returned to the burner for reuse, thus achieving heat recovery and utilization, which improves thermal efficiency and reduces energy consumption. Simultaneously, this application recovers heat by returning the volatiles generated from the reactants inside the inner shell to the burner, making rational use of the volatiles. The heat generated after the volatiles burns is used to heat the structure of the inner shell, reducing energy waste from volatiles and improving thermal efficiency. Compared with traditional electric heating methods, this system significantly reduces energy consumption while ensuring product quality.

[0019] The reactor of this application includes an inner shell and an outer shell. The outer shell serves to install and protect the inner shell, and the structure that forms a heating chamber between the inner shell and the outer shell facilitates the containment of high-temperature gas. The high-temperature gas then exchanges heat with the inner shell to heat the reaction material inside the inner shell. The structure that uses high-temperature gas to heat the inner shell improves the uniformity and stability of the heating. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0021] Figure 1 This is a schematic diagram of the graphite particle manufacturing system provided by this utility model;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the shell provided by this utility model;

[0023] Figure 3 yes Figure 2 Sectional view along direction AA.

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

[0025] 10. Reactor; 101. Heating chamber; 1011. Upper space; 1012. Lower space; 110. Outer shell; 120. Inner shell; 20. Baffle; 210. Swirl tube; 211. Guide tube wall; 212. Guide port; 30. Combustion assembly; 310. Burner; 320. Combustion chamber; 40. Inlet pipe; 50. Exhaust pipe; 510. First pipeline; 520. Second pipeline; 60. Tail gas treatment device; 70. Discharge pipe; 80. Gas-solid separator; 90. Gas return pipe; 1110. Natural gas pipe; 1120. Air pipe; 1130. First pressure sensor; 1140. First flow sensor; 1150. First fan; 1160. Second pressure sensor; 1170. Second flow sensor; 1180. Fourth... Pressure detection device; 1190, First temperature detection device; 1210, Fifth pressure detection device; 1220, Second temperature detection device; 1230, Second fan; 1240, Oxygen content detector; 1250, Sixth pressure detection device; 1260, Third temperature detection device; 1270, Second control valve; 1280, Seventh pressure detection device; 1290, Fourth temperature detection device; 1310, First insulation structure; 1320, Third fan; 1330, Second insulation structure; 1340, Third pressure detection device; 1350, Fifth temperature detection device; 1360, Volatile matter concentration detector; 1370, Third flow rate detector; 1380, Fourth control valve; 1390, Feeder; 1410, Nitrogen replenishment pipeline; 1420, Fourth flow rate detector. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] To address the problems of low heating efficiency and energy waste in existing graphite particle manufacturing systems, this application provides a graphite particle manufacturing system.

[0030] The graphite particle manufacturing system is used to artificially generate graphite particles. In the granulation process, the graphite particle manufacturing system of this application uses flowing high-temperature gas to heat the reactor 10, realizing the reuse of the flowing high-temperature gas. At the same time, the material inside the reactor 10 will generate volatiles after being heated. The graphite particle manufacturing system of this application can be used to recover and burn the volatiles, and recover and reuse the heat generated after the volatiles are burned. Heating the reactor 10 with the heat generated after the volatiles are burned can replace energy sources such as natural gas. The graphite particle manufacturing system of this application fully recovers and utilizes the volatiles generated by the material, improves thermal efficiency and reduces energy waste, achieves energy saving effect, and improves the user experience.

[0031] like Figures 1 to 3 As shown, the graphite particle manufacturing system includes a reactor 10, a combustion assembly 30, an air inlet pipe 40, and an exhaust pipe 50. The reactor 10 includes an outer shell 110 and an inner shell 120 disposed at least partly inside the outer shell 110. A heating chamber 101 is formed between the inner shell 120 and the outer shell 110. The inner shell 120 is used to contain the reaction materials.

[0032] The reactants are mixed, stirred and heated inside the reactor 10 to generate graphite particles. The reactants are a mixture of pitch and petroleum coke.

[0033] The reactor 10 of this application includes an inner shell 120 and an outer shell 110. The outer shell 110 serves to install and protect the inner shell 120, and a heating chamber 101 is formed between the inner shell 120 and the outer shell 110. This structure facilitates the containment of high-temperature gas. The heating chamber 101 provides flow space for the flow of high-temperature gas and prevents leakage of high-temperature gas. The outer shell 110 also provides heat insulation, avoiding safety risks during operation.

[0034] Specifically, the combustion assembly 30 includes a burner 310 and a combustion chamber 320 disposed on one side of the burner 310. The burner 310 is used to supply combustion gas to the combustion chamber 320. The combustion chamber 320 is connected to the air inlet of the heating chamber 101 through the air inlet pipe 40, and is used to provide high-temperature gas to heat the inner shell 120. The air outlet of the heating chamber 101 is connected to the burner 310 and the exhaust gas treatment device 60 through the exhaust pipe 50.

[0035] In this embodiment, the structure of the air inlet pipe 40 and the exhaust pipe 50 enables the recycling of high-temperature gas, thereby achieving heat recovery and utilization, which is beneficial to improving thermal efficiency and reducing the consumption of combustion energy. Furthermore, the high-temperature gas in this application flows inside the heating chamber 101, and the flowing high-temperature gas exchanges heat with the inner shell 120 to heat the reaction materials inside the inner shell 120. The structure of using flowing high-temperature gas to heat the inner shell 120 is beneficial to improving the uniformity and stability of heating.

[0036] The burner 310 is used to supply gas to the combustion chamber 320 to facilitate the combustion of the gas inside the combustion chamber 320, thereby generating high-temperature gas. The combustion gas in this application is mainly a mixture of natural gas and air when the system is started.

[0037] like Figures 1 to 3 As shown, the combustion assembly 30 also includes a natural gas pipe 1110 and an air pipe 1120. The natural gas pipe 1110 is connected to the burner 310 to provide natural gas, and the air pipe 1120 is connected to the burner 310 to provide air. The natural gas and air inside the burner 310 flow into the combustion chamber 320 for combustion and heat generation.

[0038] The combustion assembly 30 also includes a first control valve, a first pressure detection element 1130, and a first flow detection element 1140. The first control valve, the first pressure detection element 1130, and the first flow detection element 1140 are all installed on the natural gas pipe 1110. The first control valve is used to control the on / off of the natural gas pipe 1110. The first control valve is located at the end of the natural gas pipe 1110 away from the burner 310. The first pressure detection element 1130 and the first flow detection element 1140 are sensors used to detect gas pressure and gas flow respectively, so as to detect the pressure and flow of natural gas to the burner 310 in real time.

[0039] In this embodiment, the combustion assembly 30 further includes a first fan 1150, a second pressure detection element 1160, and a second flow detection element 1170. The first fan 1150, the second pressure detection element 1160, and the second flow detection element 1170 are all disposed on the air pipe 1120. The first fan 1150 is used to provide driving force for air to flow to the burner 310. The second pressure detection element 1160 and the second flow detection element 1170 are sensors used to detect gas pressure and gas flow respectively, so as to detect the air in real time.

[0040] The combustion assembly 30 of this application also includes a controller, specifically a PLC controller. The controller is connected to the first control valve, the first pressure detection element 1130, the first flow detection element 1140, the first fan 1150, the second pressure detection element 1160, and the second flow detection element 1170. The controller can adaptively adjust the ratio of natural gas and air supplied to the burner 310 according to the gas temperature inside the reactor 10, thereby controlling the temperature of the high-temperature gas. Specifically, when it is necessary to increase the temperature of the high-temperature gas, the amount of natural gas can be increased accordingly to adjust the air intake to ensure complete combustion of natural gas.

[0041] like Figures 1 to 3 As shown, the inner shell 120 of the reactor 10 of this application is equipped with multiple temperature sensors to detect the temperature of the inner shell 120 of the reactor 10.

[0042] Specifically, multiple temperature sensors are arranged along the height direction of the inner housing 120 to form at least three sets of sensors located at the top end, bottom end, and middle area of ​​the top and bottom ends of the inner housing 120. Each set of sensors includes multiple sensors arranged at equal intervals along the circumference of the inner housing 120. The structure of multiple sensors facilitates the comprehensive detection of the temperature of the inner housing 120.

[0043] The temperature sensor is connected to the controller signal, and then transmits the temperature information to the controller. When the temperature is detected to be lower than the preset temperature, the controller can control the increase of the amount of natural gas to raise the temperature of the high-temperature gas.

[0044] In this embodiment, the combustion chamber 320 is used for gas combustion to generate high-temperature gas. The combustion assembly 30 also includes an igniter, a flame detector, and a display. The igniter is used to create an ignition source to ignite the gas. The flame detector is used to detect the combustion state inside the combustion chamber 320. The flame detector is an ultraviolet flame detector. The display is used to show the situation inside the combustion chamber 320 so as to facilitate real-time detection of the situation inside the combustion chamber 320.

[0045] Furthermore, the combustion assembly 30 also includes a fourth pressure detection element 1180 and a first temperature detection element 1190. The fourth pressure detection element 1180 and the first temperature detection element 1190 are disposed on the intake pipe 40 to realize the pressure and temperature detection of the high-temperature gas inside the intake pipe 40, so as to facilitate understanding of the gas pressure and temperature of the high-temperature gas flowing into the heating chamber 101. The fourth pressure detection element 1180 and the first temperature detection element 1190 are sensors. The controller is connected to the fourth pressure detection element 1180 and the fourth flow detection element 1420 for signal display.

[0046] like Figures 1 to 3 As shown, the graphite particle manufacturing system also includes a gas-solid separator 80. After the reactants are heated, volatiles are formed and flow to the gas-solid separator 80. The gas-solid separator 80 separates the volatiles so that the gaseous volatiles flow to the burner 310, where they are burned to generate heat. The volatiles include gases such as methane, hydrogen, and carbon monoxide. After gas-solid separation, the volatiles are transported back to the burner 310 by the third fan 1320, and can replace most of the natural gas combustion.

[0047] In the initial stage of the graphite particle manufacturing system, the reactants produce volatiles, and the main combustion gas is natural gas. As the reactants are heated and produce volatiles, the combustion chamber 320 generates high-temperature gas by burning the volatiles, thereby saving natural gas usage and recovering the volatiles, saving energy consumption and improving thermal efficiency.

[0048] Specifically, the inlet end of the gas-solid separator 80 is connected to the interior of the inner shell 120 to collect volatiles in the reactants, and the gas output end of the gas-solid separator is connected to the burner 310.

[0049] It is understood that the gas-solid separator 80 in this application is a conventional gas-solid separator 80 on the market, and its specific function is to separate the gas and output it.

[0050] In this embodiment, the graphite particle manufacturing system also includes a discharge pipe 70, a first insulation structure 1310, a seventh pressure detection element 1280, and a fourth temperature detection element 1290. One end of the discharge pipe 70 is connected to the discharge port at the top of the inner shell 120, and the other end of the discharge pipe 70 is connected to the gas-solid separator 80 to realize the transfer of volatiles to the interior of the gas-solid separator 80. The seventh pressure detection element 1280 and the fourth temperature detection element 1290 are sensors and are used for pressure detection and temperature detection of volatiles, respectively. The pressure and temperature values ​​of the seventh pressure detection element 1280 and the fourth temperature detection element 1290 are the basis for backflushing and cleaning the gas-solid separator 80 to prevent clogging.

[0051] The first insulation structure 1310 is used to prevent the volatiles from condensing inside the discharge pipe 70 to form tar, and to ensure that the temperature is not lost. The first insulation structure 1310 is installed on the discharge pipe 70.

[0052] The first insulation structure 1310 can be insulation cotton for heat insulation, or it can be a sleeve structure with a heating element, such as a sleeve structure with an electric heating wire, and the temperature is maintained by the structure of the heating element.

[0053] like Figures 1 to 3 As shown, the graphite particle manufacturing system also includes a gas return pipe 90 and a third blower 1320. One end of the gas return pipe 90 is connected to the gas output end of the gas-solid separation, and the other end of the gas return pipe 90 is connected to the burner 310. The third blower 1320 is installed in the gas return pipe 90 and is used to provide driving force for the gas to flow to the burner 310.

[0054] In this process, after the inner shell 120 of the reactor 10 is heated by high-temperature gas, the reactants such as asphalt and petroleum coke mixed powder inside the inner shell 120 generate volatiles. Driven by the third blower 1320, the volatiles are discharged through the discharge pipe 70 to the gas-solid separator 80 in the form of a slight negative pressure, separating the trace dust brought out by the stirring and slight negative pressure system factors inside the reactor 10. The high-temperature volatiles flow to the burner 310 through the third blower 1320 and the gas return pipe 90 for full utilization of the volatiles. The volatiles in this application are not discharged externally, which further improves the thermal efficiency and reduces energy consumption.

[0055] Specifically, the graphite particle manufacturing system also includes a second insulation structure 1330, a fourth control valve 1380, a third pressure detection element 1340, a fifth temperature detection element 1350, a volatile matter concentration detection element 1360, and a third flow rate detection element 1370. The fourth control valve 1380 is installed on the gas return pipe 90, specifically at the end of the gas return pipe 90 near the burner 310, to control the opening and closing of the gas return pipe 90. The fourth control valve 1380, the third pressure detection element 1340, the fifth temperature detection element 1350, the volatile matter concentration detection element 1360, and the third flow rate detection element 1370 are used for detecting gas pressure, temperature, volatile matter concentration, and gas flow rate inside the gas return pipe 90, respectively, and sending the detection information to the controller. Among them, the third pressure detection element 1340, the fifth temperature detection element 1350, and the volatile matter concentration detection element 1360 are all sensors, with the volatile matter concentration detection element 1360 specifically being an infrared absorption sensor.

[0056] In this embodiment, the third fan 1320, the fourth control valve 1380, the third pressure detection element 1340, the fifth temperature detection element 1350, the volatile matter concentration detection element 1360, and the third flow rate detection element 1370 are all connected to the controller signal to facilitate the full utilization of volatile matter and the adjustment of volatile matter gas volume through the controller, thereby reducing manual intervention, improving the efficiency of the overall structure, and reducing human error.

[0057] The second insulation structure 1330 of this application is used to prevent the volatiles from condensing and forming tar, and to ensure that the temperature is not lost. The second insulation structure 1330 is installed on the discharge pipe 70.

[0058] The second insulation structure 1330 can be insulation cotton for heat insulation, or it can be a sleeve structure with heating elements, such as a sleeve structure with electric heating wires, to maintain the temperature through the structure of the heating elements.

[0059] like Figures 1 to 3 As shown, the combustible gas is natural gas and the combustible gas in the volatile matter. Both of them can be burned inside the combustion chamber 320 to form high-temperature gas. The high-temperature gas enters the heating chamber 101 to heat the inner shell 120.

[0060] Specifically, along the height direction of the reactor 10, the air inlet of the heating chamber 101 is located at the bottom of the outer shell 110, and the air outlet of the heating chamber 101 is located at the top of the outer shell 110, so as to ensure that high-temperature gas enters the heating chamber 101 from the bottom and flows to the top, so as to achieve full heating of the inner shell 120.

[0061] In this embodiment, the reactor 10 also includes a partition 20, which is disposed inside the heating chamber 101. The partition 20 divides the heating chamber 101 into an upper space 1011 and a lower space 1012 along the height direction of the reactor 10. The air inlet is connected to the lower space 1012. Along the circumference of the partition 20, the partition 20 has a plurality of air vents spaced apart, which are used to allow high-temperature gas to flow.

[0062] The inner shell 120 has a cylindrical structure, and the partition 20 forms a circular structure. The inner circumferential surface of the partition 20 is fitted onto the outer circumferential surface of the inner shell 120, and the outer circumferential surface of the partition 20 abuts against the inner circumferential surface of the outer shell 110.

[0063] In this embodiment, the distance between the partition 20 and the bottom surface of the outer shell 110 is less than the distance between the partition 20 and the top surface of the outer shell 110. This ensures that the inner shell 120 is mostly formed inside the upper space 1011 of the heating cavity 101, which facilitates uniform heating of the inner shell 120.

[0064] like Figures 1 to 3As shown, the reactor 10 also includes a swirling tube 210, which is disposed on the top surface of the partition 20. The swirling tube 210 is disposed one-to-one with the air outlet. The swirling tube 210 is disposed on the outer edge of the air outlet and is connected to the air outlet. After the high temperature gas flows through multiple swirling tubes 210, a hot air swirling flow is formed in the upper space 1011, which flows along the circumference of the inner shell 120 and toward the air outlet.

[0065] Specifically, the swirl tube 210 is disposed on the partition plate 20 to guide the high-temperature gas flowing through the air vent, thereby forming a hot air swirl in the upper space 1011. By forming a hot air swirl, the high-temperature gas can uniformly heat the outer peripheral surface of the inner shell 120, thereby improving the uniformity of heating of the reactants and improving thermal efficiency. The swirl tube 210 of this application avoids the problem of low thermal efficiency caused by local heating in the prior art.

[0066] In this embodiment, the air outlet is rectangular, and the swirl tube 210 includes a guide tube wall 211 and a side tube wall, wherein both the guide tube wall 211 and the side tube wall are plate structures. The guide tube wall 211 and the side tube wall cooperate to form the swirl tube 210. The first end of the guide tube wall 211 is connected to the partition plate 20. The first end of the guide tube wall 211 along the circumference of the partition plate 20 is located at the outer edge of one end of the air outlet. The second end of the guide tube wall 211 extends toward the top side of the outer shell 110 and toward the side of the air outlet. The side tube walls are located on both sides of the guide tube wall 211. One end of the two side tube walls is connected to the guide tube wall 211, and the other ends of the two side tube walls are spaced apart to form guide openings 212. The air outlet is located inside the space enclosed by the guide tube wall 211 and the side tube wall. The air outlet and the guide openings 212 communicate to form an air duct structure.

[0067] The guide port 212 is used for the discharge of high-temperature gas. When the high-temperature gas flows through the air vent, it will come into contact with the guide tube wall 211 and flow along the guide tube wall 211 to the guide port 212. Then it will flow into the upper space 1011 through the guide port 212.

[0068] In order to ensure that the high-temperature gas flows out completely through the guide port 212, the air outlet of this application is set inside the projection of the guide tube wall 211 on one side of the partition 20, that is, the surface area of ​​the guide tube wall 211 facing the air outlet is larger than the area of ​​the air outlet, so as to achieve sufficient guidance of the high-temperature gas.

[0069] In this embodiment, the two side walls are symmetrically arranged to ensure the uniformity of the flow of high-temperature gas.

[0070] In this embodiment, an angle A is formed between the guide tube wall 211 and the partition plate 20. The angle A satisfies 30°≤A≤60°. When the angle A between the guide tube wall 211 and the partition plate 20 satisfies 30°≤A≤60°, the partition plate 20 has good installation strength and facilitates the formation of hot air swirl. When the angle A is too large, it is not convenient to form hot air swirl. When the angle A is too small, it affects the flow efficiency of high-temperature gas, thereby affecting the heating efficiency. The angle A can be 30°, 35°, 40°, 45°, 50°, 55°, 60°, etc.

[0071] The preferred included angle A is 45°, which ensures both the efficiency of high-temperature gas flow and facilitates the formation of hot air swirls. In this application, there are six air inlets and six swirl tubes 210. The arrangement of the six swirl tubes 210 can blow hot air into the heating chamber 101 of the reactor 10 from different positions and angles, so that the heat provided by each swirl tube 210 is evenly distributed to different parts of the inner shell 120 of the reactor 10, forming a complex flow field. This ensures that the temperature distribution in the circumferential and height directions of the reactor 10 is uniform, allowing the reactor 10 wall to exchange heat more fully with the high-temperature gas.

[0072] In this embodiment, the line connecting the center of the circle containing the side pipe wall and the baffle 20 is perpendicular to the extension direction of the side pipe wall, so as to ensure that the high-temperature gas flowing out from the guide port 212 is tangent to the radial direction of the baffle 20, so as to form a corresponding hot air vortex.

[0073] like Figures 1 to 3 As shown, the exhaust pipe 50 is used to discharge high-temperature gas from the heating chamber 101. After the high-temperature gas heats the inner shell 120, it flows from the gas outlet at the top of the inner shell 120 to the exhaust pipe 50 to form a flowing high-temperature gas. The flowing high-temperature gas exchanges heat with the inner shell 120 to heat the reaction material inside the inner shell 120. The structure of using flowing high-temperature gas to heat the inner shell 120 is beneficial to improving the uniformity and stability of heating.

[0074] The first end of the exhaust pipe 50 is connected to the outlet of the heating chamber 101, and the second end of the exhaust pipe 50 forms a first pipe 510 connected to the burner 310 and a second pipe 520 connected to the exhaust gas treatment device 60. By controlling the opening and closing of the first pipe 510 and the second pipe 520, the flow direction of the high-temperature gas can be controlled.

[0075] In this application, when the internal temperature of the reactor 10 is too high, the high-temperature gas can be directed to the second pipeline 520 and then to the exhaust gas treatment device 60. The exhaust gas treatment device 60 is a prior art exhaust gas treatment device that can be used for high-temperature gas treatment. When the internal temperature of the reactor 10 is normal or too low, the high-temperature gas is directed to the first pipeline 510 and then to the burner 310, thereby achieving the recycling of the high-temperature gas.

[0076] In this embodiment, a second control valve 1270 is provided on the first pipeline 510, and a third control valve is provided on the second pipeline 520. Both the third control valve and the second control valve 1270 are connected to the controller signal to facilitate the automatic opening and closing of the third control valve and the second control valve 1270 under the control of the controller, thereby controlling the flow direction of the high-temperature gas.

[0077] The graphite particle manufacturing system of this application uses high-temperature gas from inside the burner 310 to heat the inner shell 120 containing the reactants inside the heating chamber 101. The high-temperature gas is then returned to the burner 310 for reuse, thus achieving heat recovery and utilization, which improves thermal efficiency and reduces combustion energy consumption. Simultaneously, this application recovers heat by returning volatiles generated from the reactants inside the inner shell 120 to the burner 310, making rational use of the volatiles. The heat generated after the volatiles burns is used to heat the structure of the inner shell 120, reducing energy waste from volatiles and improving thermal efficiency. Compared with traditional electric heating methods, this system significantly reduces energy consumption while ensuring product quality.

[0078] In this embodiment, the graphite particle manufacturing system also includes a second fan 1230. The second fan 1230 is used to provide driving force for the high-temperature gas to be discharged from the heating chamber 101. The arrangement of the second fan 1230 is conducive to forming a negative pressure inside the heating chamber 101, so as to facilitate the flow of the high-temperature gas generated in the combustion chamber 320 to the heating chamber 101.

[0079] In this embodiment, the graphite particle manufacturing system further includes a fifth pressure detection element 1210, a second temperature detection element 1220, and an oxygen content detector 1240. All three elements—the fifth pressure detection element 1210, the second temperature detection element 1220, and the oxygen content detector 1240—are sensors and are located at the first end of the exhaust pipe 50. They are used to detect the pressure, temperature, and oxygen content of the high-temperature gas discharged from the heating chamber 101, and transmit the detection information to the controller. The oxygen content detector 1240 is an AT oxygen content detector 1240.

[0080] In this embodiment, the graphite particle manufacturing system further includes a sixth pressure sensor 1250 and a third temperature sensor 1260. Both the sixth pressure sensor and the third temperature sensor 1260 are installed on the first pipeline 510 for pressure and temperature detection, and transmit the detection information to the controller. The sixth pressure sensor 1250 and the third temperature sensor 1260 are located downstream of the second control valve 1270 to detect the pressure and temperature of the high-temperature gas actually flowing into the burner 310. "Downstream" refers to the area located at the lower end of the second control valve 1270 along the direction of high-temperature gas flow.

[0081] like Figures 1 to 3 As shown, the graphite particle manufacturing system also includes a feeder 1390, which is located on one side outside the reactor 10. The feeder 1390 is connected to the feed inlet at the top of the inner shell 120 and is used to supply the reaction materials.

[0082] Specifically, the feeder 1390 has a funnel-shaped outer shell, and the bottom opening of the outer shell is connected to the inner shell 120 through a conveying pipe to convey the reaction material into the inner shell 120.

[0083] In this embodiment, the graphite particle manufacturing system further includes a nitrogen replenishment pipeline 1410 and a fourth flow detection element 1420. The end of the nitrogen replenishment pipeline 1410 is connected to the inner housing 120, and the fourth flow detection element 1420 is disposed on the nitrogen replenishment pipeline 1410. An external nitrogen storage device supplies nitrogen to the interior of the inner housing 120 through the nitrogen replenishment pipeline 1410. The fourth flow detection element 1420 is used to detect the flow rate of nitrogen and is connected to the controller signal.

[0084] Specifically, in order to prevent air from entering the reactor 10 and causing oxidation of the reactants, and to prevent problems such as explosion caused by mixing high-temperature volatiles with air, nitrogen is introduced into the inner shell 120 of the reactor 10 to replace the air inside the reactor with a nitrogen atmosphere, and an appropriate amount of nitrogen is continuously introduced during the heating process to quickly discharge the volatiles to the discharge pipe 70.

[0085] The usage process of this embodiment is as follows: natural gas and air are burned in the combustion chamber 320 to form high-temperature gas. The high-temperature gas flows to the heating chamber 101 to heat the reactants inside the inner shell 120. After the high-temperature gas flows out of the heating chamber 101, it flows back to the combustion chamber 320 for recycling. At the same time, the volatiles generated inside the inner shell 120 are partially recovered to the burner 310 after gas-solid separation to replace most of the natural gas for combustion.

[0086] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0087] The graphite particle manufacturing system of this application uses high-temperature gas from inside the burner 310 to heat the inner shell 120 used to contain the reactants by introducing the gas into the heating chamber 101. The high-temperature gas is then returned to the burner 310 for reuse, thereby achieving heat recovery and utilization, which helps to improve thermal efficiency and reduce combustion energy consumption. At the same time, this application recovers the volatiles generated by the reactants inside the inner shell 120 and returns them to the burner 310 for heat recovery. This rational utilization of volatiles and the use of the heat generated after the volatiles are burned to heat the structure of the inner shell 120 reduces energy waste from volatiles and improves thermal efficiency. Compared with the traditional electric heating mode, this system significantly reduces energy consumption while ensuring product quality.

[0088] The reaction vessel 10 of this application includes an inner shell 120 and an outer shell 110. The outer shell 110 serves to install and protect the inner shell 120, and the structural arrangement of forming a heating chamber 101 between the inner shell 120 and the outer shell 110 is beneficial for containing high-temperature gas. The high-temperature gas then exchanges heat with the inner shell 120 to heat the reaction material inside the inner shell 120. The structural arrangement of using high-temperature gas to heat the inner shell 120 is beneficial for improving the uniformity and stability of heating.

[0089] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0090] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0091] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0092] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A graphite particle manufacturing system, characterized in that, include: The reactor (10) includes an outer shell (110) and an inner shell (120) disposed at least partly inside the outer shell (110), wherein a heating chamber (101) is formed between the inner shell (120) and the outer shell (110), and the inner shell (120) is used to contain the reaction materials; Combustion assembly (30) includes a burner (310) and a combustion chamber (320) disposed on one side of the burner (310), wherein the burner (310) is used to supply combustion gases to the combustion chamber (320); The combustion chamber (320) is connected to the air inlet of the heating chamber (101) through the air inlet (40) to provide high-temperature gas to heat the inner shell (120). The air outlet of the heating chamber (101) is connected to the burner (310) and the exhaust gas treatment device (60) through the exhaust pipe (50). A gas-solid separator (80) is provided, the inlet of which is connected to the interior of the inner shell (120) for collecting volatiles in the reactants, and the gas output end of the gas-solid separator is connected to the burner (310).

2. The graphite particle manufacturing system according to claim 1, characterized in that, Along the height direction of the reactor (10), the air inlet of the heating chamber (101) is located at the bottom end of the outer shell (110), and the air outlet of the heating chamber (101) is located at the top end of the outer shell (110). The reactor (10) further includes: A partition (20) is disposed inside the heating chamber (101). The partition (20) divides the heating chamber (101) into an upper space (1011) and a lower space (1012) along the height direction of the reactor (10). The air inlet communicates with the lower space (1012). Along the circumference of the partition (20), the partition (20) has a plurality of air vents spaced apart. Swirl tubes (210) are disposed on the top surface of the partition (20). Each swirl tube (210) is disposed in correspondence with an air outlet. The swirl tubes (210) are disposed on the outer edge of the air outlet and communicate with the air outlet. After the high-temperature gas flows through multiple swirl tubes (210), a hot air swirling flow is formed inside the upper space (1011) along the circumference of the inner shell (120) and toward the air outlet.

3. The graphite particle manufacturing system according to claim 2, characterized in that, The cyclone tube (210) includes: The guide tube wall (211) has a first end connected to the partition (20). The first end of the guide tube wall (211) is located at the outer edge of one end of the air outlet along the circumference of the partition (20). The second end of the guide tube wall (211) extends toward the top side of the outer shell (110) and toward the side of the air outlet. Side tube walls are provided on both sides of the guide tube wall (211), one end of the two side tube walls is connected to the guide tube wall (211), and the other ends of the two side tube walls are spaced apart to form guide openings (212).

4. The graphite particle manufacturing system according to claim 3, characterized in that, The air vent is located inside the projection of the guide tube wall (211) on one side of the partition (20); and / or The two side tube walls are symmetrically arranged; and / or The line connecting the center of the circle containing the side pipe wall and the partition (20) is perpendicular to the extending direction of the side pipe wall; and / or An angle A is formed between the guide tube wall (211) and the partition plate (20), wherein the angle A satisfies 30°≤A≤60°; and / or The distance between the partition (20) and the bottom surface of the outer shell (110) is less than the distance between the partition (20) and the top surface of the outer shell (110).

5. The graphite particle manufacturing system according to claim 1, characterized in that, The combustion assembly (30) also includes: A natural gas pipe (1110) is connected to the burner (310) for supplying natural gas; The first control valve is installed on the natural gas pipeline (1110); A first pressure detection element (1130) and a first flow detection element (1140) are disposed on the natural gas pipe (1110); An air pipe (1120) is connected to the burner (310) for supplying air; The first fan (1150) is installed on the air pipe (1120); The second pressure detection element (1160) and the second flow detection element (1170) are disposed on the air pipe (1120); The controller is signal-connected to the first control valve, the first pressure sensor (1130), the first flow sensor (1140), the first fan (1150), the second pressure sensor (1160), and the second flow sensor (1170).

6. The graphite particle manufacturing system according to claim 1, characterized in that, The combustion assembly (30) also includes: An igniter is disposed inside the burner (310); A flame detector is disposed inside the burner (310); A display is disposed on the outer surface of the housing (110); The fourth pressure detection element (1180) and the first temperature detection element (1190) are disposed on the air intake pipe (40); The controller is signal-connected to the display, the igniter, the flame detector, the fourth pressure sensor (1180), and the fourth flow sensor (1420).

7. The graphite particle manufacturing system according to claim 1, characterized in that, The first end of the exhaust pipe (50) is connected to the outlet of the heating chamber (101), and the second end of the exhaust pipe (50) forms a first pipe (510) connected to the burner (310) and a second pipe (520) connected to the exhaust gas treatment device (60). The graphite particle manufacturing system further includes: The second fan (1230) is disposed on the first end of the exhaust pipe (50); The fifth pressure detection element (1210) and the second temperature detection element (1220) are both disposed on the first end of the exhaust pipe (50); An oxygen content detector (1240) is installed at the first end of the exhaust pipe (50); The second control valve (1270) is installed on the first pipeline (510); The sixth pressure detection element (1250) and the third temperature detection element (1260) are both installed on the first pipeline (510); The third control valve is located on the second pipeline (520).

8. The graphite particle manufacturing system according to claim 1, characterized in that, The graphite particle manufacturing system also includes: Discharge pipe (70), one end of which is connected to the discharge port at the top of the inner shell (120), and the other end of which is connected to the gas-solid separator (80); The first insulation structure (1310) is sleeved on the discharge pipe (70); The seventh pressure detection element (1280) and the fourth temperature detection element (1290) are both installed on the discharge pipe (70).

9. The graphite particle manufacturing system according to any one of claims 1 to 8, characterized in that, The graphite particle manufacturing system also includes: A gas return pipe (90) is provided, one end of which is connected to the gas output end of the gas-solid separation, and the other end of which is connected to the burner (310). The third fan (1320) is installed in the gas return pipe (90); The second insulation structure (1330) is sleeved on the gas return pipe (90); The third pressure detection element (1340), the fifth temperature detection element (1350), the volatile matter concentration detection element (1360), and the third flow rate detection element (1370) are installed on the gas return pipe (90); The fourth control valve (1380) is disposed on the gas return pipe (90) and at one end of the gas return pipe (90) near the burner (310).

10. The graphite particle manufacturing system according to any one of claims 1 to 8, characterized in that, The graphite particle manufacturing system also includes: A feeder (1390) is disposed on one side outside the reactor (10), and the feeder (1390) is connected to the feed inlet at the top of the inner shell (120) for supplying reactants; and / or A nitrogen replenishment line (1410) and a fourth flow detection element (1420), wherein the end of the nitrogen replenishment line (1410) is connected to the inner housing (120), and the fourth flow detection element (1420) is disposed on the nitrogen replenishment line (1410); and / or Multiple temperature sensors are provided on the inner housing (120) at intervals along the circumferential and height directions.

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