A continuous production pyrolysis kiln installation

Abstract

This invention discloses a continuous production pyrolysis kiln equipment that utilizes resin or organic polymers to pyrolyze into high-purity carbon powder material. The equipment includes a furnace tube body supported by a bracket. The inlet of the furnace tube body is connected to a feeding cylinder, and the outlet is connected to a receiving hopper. The furnace tube body adopts a three-section structure. A cooler is connected to the upper end of the furnace tube body inside the furnace tube body, and the cooler is connected to a recovery tank via a pipe. In this invention, the three-section structure consists of a drying and dehydration section, a pyrolysis section, and a high-temperature calcination section. The drying and dehydration section removes moisture from the raw materials, the pyrolysis section discharges organic waste gas, and the high-temperature pyrolysis section pyrolyzes the raw materials at high temperatures, decomposing them into combustible gas, liquid, and solid residue. In the feeding cylinder, a drive motor rotates the stirring shaft and stirring paddle to stir the material above the discharge pipe, preventing powder agglomeration and avoiding powder blockage at the discharge pipe.

Description

Technical Field

[0001] This invention relates to the field of high-purity carbon powder production technology, specifically to a continuous production pyrolysis kiln equipment. Background Technology

[0002] High-purity carbon materials generally refer to carbon materials with a purity of 99.99% or higher. They possess characteristics such as high temperature resistance, good electrical and thermal conductivity, thermal shock resistance, and chemical stability. High-purity carbon powder is a mineral powder, mainly composed of elemental carbon. It is soft, blackish-gray, and has an oily feel. High-purity carbon powder is generally produced by using low-purity carbon powder as raw material, which is then purified to obtain 5N and higher purity carbon powder. Due to its resistance to high and low temperatures and its electrical conductivity, carbon powder is mainly used as a raw material for refractory materials, pigments, etc. With a deeper understanding of the corrosion resistance, radiation resistance, and self-lubricating properties of carbon powder, its application fields are becoming increasingly wide.

[0003] High-purity toner is mainly used in industries such as lithium battery anode materials and electronic components. Currently, polymerization is a fine chemical toner technology, which includes suspension polymerization, emulsion polymerization, microencapsulation, dispersion polymerization, compression polymerization, and chemical pulverization. Polymerization is completed in the liquid phase and can produce toner with a lower melting temperature. Another method is pulverization. However, both polymerization and pulverization methods involve more steps and have more complex production processes. On the one hand, the plant area is larger, and on the other hand, the cost is higher. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a continuous production pyrolysis kiln equipment that utilizes resin or organic polymer to pyrolyze into high-purity carbon powder material. The equipment includes a furnace tube body supported by a bracket. The inlet of the furnace tube body is connected to a feeding cylinder, and the outlet of the furnace tube body is connected to a receiving hopper. The furnace tube body adopts a three-section structure: a drying and dehydration section, a pyrolysis section, and a high-temperature calcination section. A cooler is connected to the upper end of the furnace tube body inside the furnace tube body, and the cooler is connected to a recovery tank via a pipe. A heater is connected to the upper end of the furnace tube body to heat the exhaust gas discharged from the pyrolysis section.

[0005] Preferably, the furnace tube body is fixedly connected to the base, a feed inlet is provided at the upper end of one side of the furnace tube body, a discharge outlet is provided at the lower end of the other side of the furnace tube body, a servo motor is installed on the side wall of the furnace tube body near the feed inlet, the servo motor is connected to the conveying screw shaft, and the conveying screw shaft is located inside the furnace tube body.

[0006] Preferably, a first row of exhaust gas pipes is provided at the upper end of the furnace tube body between the drying and dehydration section and the pyrolysis section, and the first row of exhaust gas pipes is connected to a cooler; a second row of exhaust gas pipes is provided at the upper end of the furnace tube body between the pyrolysis section and the high-temperature calcination section, and the second row of exhaust gas pipes is connected to a heater.

[0007] Preferably, the cooler includes an outer cylinder and an inner cylinder, with a cavity between the outer cylinder and the inner cylinder. One end of the outer cylinder is connected to a first liquid inlet pipe, and the other end of the outer cylinder is connected to a first liquid outlet pipe. The first liquid inlet pipe and the first liquid outlet pipe communicate with the cavity.

[0008] Preferably, the heater includes an outer tube and an inner tube, with an exhaust pipe inside the inner tube and a cavity between the exhaust pipe and the inner tube for placing an electric heating element.

[0009] Preferably, the top of the recycling tank is provided with a receiving pipe, and the bottom of the recycling tank is provided with a discharge pipe.

[0010] Preferably, the feeding cylinder is provided with a raw material inlet, a drive motor is installed at the upper end of the feeding cylinder, the drive motor is connected to a stirring shaft, a plurality of stirring blades are installed on the stirring shaft, and a sleeve is provided at the bottom end of the stirring shaft, the sleeve being connected to a stirring component.

[0011] Preferably, the furnace tube body includes an upper furnace body and a lower furnace body, both of which are semi-cylindrical with cavities in the middle, and heating layers are installed on the inner walls of both the upper and lower furnace bodies.

[0012] Preferably, the conveying spiral shaft includes a first spiral shaft, a second spiral shaft, and a third spiral shaft. The first spiral shaft is detachably connected to the second spiral shaft, and the second spiral shaft is detachably connected to the third spiral shaft. At least one second spiral shaft is provided.

[0013] Preferably, the receiving hopper adopts a three-layer structure design, including an outer shell, an inner shell, and a high-temperature resistant inner lining. The inner shell is provided on the outside of the outer shell, and there is a cavity between the inner shell and the outer shell.

[0014] The technical effects and advantages of this invention are as follows:

[0015] 1. In this invention, the three-section structure consists of a drying and dehydration section, a pyrolysis section, and a high-temperature calcination section. The drying and dehydration section is used to remove moisture from the raw materials, the pyrolysis section is used to discharge organic waste gas, and the high-temperature pyrolysis section is used to pyrolyze the raw materials at high temperatures, decomposing them into combustible gas, liquid, and solid residue through high-temperature heating. One pyrolysis kiln can realize the production of high-purity carbon powder, which can greatly reduce the floor space and save production costs.

[0016] 2. In this invention, the cooler is connected to the recovery tank. The cooler captures ammonia water by condensation, and then the recovery tank recovers the ammonia water. The heater heats the exhaust gas pipeline connected to the second exhaust gas pipe, heating it to 400 degrees Celsius throughout the process to prevent coking from causing blockage of the exhaust pipe and preventing it from working.

[0017] 3. In this invention, a drive motor in the feeding cylinder drives the stirring shaft and stirring paddle to rotate, stirring the material above the feeding pipe to prevent the powder from agglomerating and avoid clogging of the feeding pipe.

[0018] 4. In this invention, heating layers are installed on the inner walls of both the upper and lower furnace bodies. The heating layers are made of high-temperature resistant alloy materials, which is beneficial for heat conduction. An inner lining layer is provided on the inner wall of the heating layer. The inner lining layer is made of graphite tiles, which has a high-temperature resistant effect and effectively avoids impurities generated by high-temperature reactions. During the high-temperature pyrolysis of raw materials, the oxidation of the inner lining layer made of metal materials is avoided, thereby improving the purity of the high-purity carbon powder produced by pyrolysis.

[0019] 5. In this invention, the receiving hopper adopts a three-layer structure design, with a graphite tile inner lining and a double-layer outer wall connected to a heat dissipation component to remove heat and achieve rapid cooling. The receiving hopper is equipped with a quick-release flange and a high-temperature resistant hose to facilitate material receiving. The pyrolysis material needs to be cooled to below 50 degrees Celsius for collection to prevent oxidation upon contact with oxygen. Opening the ball valve allows the high-purity carbon powder to be discharged from the discharge pipe for easy unloading. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the pyrolysis kiln equipment structure provided in the embodiments of this application;

[0021] Figure 2 This is a rear view of the pyrolysis kiln equipment provided in the embodiments of this application;

[0022] Figure 3 This is a schematic diagram of the connection structure of the cooler in the pyrolysis kiln equipment provided in the embodiments of this application;

[0023] Figure 4 This is a schematic diagram of the connection structure of the recovery tank in the pyrolysis kiln equipment provided in the embodiments of this application;

[0024] Figure 5 This is a cross-sectional view of the cooler in the pyrolysis kiln equipment provided in the embodiments of this application;

[0025] Figure 6 This is a cross-sectional view of the heater in the pyrolysis kiln equipment provided in the embodiments of this application;

[0026] Figure 7 This is a schematic diagram of the structure of the feeding cylinder in the pyrolysis kiln equipment provided in the embodiments of this application;

[0027] Figure 8 This is a cross-sectional view of the feeding cylinder in the pyrolysis kiln equipment provided in the embodiments of this application;

[0028] Figure 9 This is a schematic diagram of the structure of the furnace tube body in the pyrolysis kiln equipment provided in the embodiments of this application;

[0029] Figure 10 This is a cross-sectional view of the heating layer in the pyrolysis kiln equipment provided in the embodiments of this application;

[0030] Figure 11 This is a schematic diagram of the conveying spiral shaft in the pyrolysis kiln equipment provided in the embodiments of this application;

[0031] Figure 12 This is a schematic diagram of the connection structure between the first spiral shaft and the second spiral shaft in the pyrolysis kiln equipment provided in the embodiments of this application;

[0032] Figure 13 This is a schematic diagram of the material receiving hopper in the pyrolysis kiln equipment provided in the embodiments of this application;

[0033] Figure 14 This is a cross-sectional view of the receiving hopper in the pyrolysis kiln equipment provided in the embodiments of this application.

[0034] In the diagram: 1. Furnace tube body; 101. Feed inlet; 102. Discharge outlet; 103. Base; 104. Servo motor; 105. First exhaust pipe; 106. Second exhaust pipe; 107. Nitrogen inlet pipe; 2. Support; 3. Feeding cylinder; 301. Raw material inlet; 302. Discharge pipe; 303. Valve; 4. Cooler; 401. First air inlet pipe; 402. Check valve; 403. First air outlet pipe; 404. First liquid inlet pipe; 405. First liquid outlet pipe; 406. End cap; 407. Outer cylinder; 408. Inner cylinder; 409. Recovery pipe; 5. Heater; 501. Outer tube; 502. Inner tube; 503. Electric heating tube; 504. Control box; 505. Exhaust pipe; 6. Receiving bin; 01. Outer shell; 602. Inner shell; 603. High-temperature resistant inner lining; 61. Flange; 62. Hoses; 63. Temperature sensor; 64. Discharge pipe; 65. Nitrogen inlet pipe; 66. Second liquid inlet pipe; 67. Second liquid outlet pipe; 68. Exhaust pipe; 69. Drain pipe; 7. Recovery tank; 8. Drive motor; 9. Stirring shaft; 10. Stirring paddle; 11. Sleeve; 111. Fixing hole; 12. Stirring component; 121. Insert block; 92. Stirring blade; 13. Upper furnace body; 14. Lower furnace body; 15. Heating layer; 151. Shell; 152. Heating element; 16. Inner lining; 17. Conveying screw shaft; 18. First screw shaft; 181. Slot; 19. Second screw shaft; 191. Protrusion; 20. Third screw shaft. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0036] Please see Figures 1-2 This embodiment provides a continuous production pyrolysis kiln equipment that utilizes resin or organic polymers to pyrolyze into high-purity carbon powder material in a high-temperature, oxygen-free environment. The equipment includes a furnace tube body 1, supported by a bracket 2. The inlet 101 of the furnace tube body 1 is connected to a feed cylinder 3, and the outlet 102 is connected to a receiving hopper 6. The furnace tube body 1 employs a three-section structure: a drying and dehydration section, a pyrolysis section, and a high-temperature calcination section. The drying and dehydration section has a temperature of 100-200 degrees Celsius and is used to remove moisture from the raw materials. The pyrolysis section has a temperature of 200-... The pyrolysis section is 400 degrees Celsius and is used to discharge organic waste gas. The high-temperature pyrolysis section is 1200-1300 degrees Celsius and is used to pyrolyze the raw materials at high temperature. The upper end of the furnace tube body 1 is connected to the cooler 4. The cooler 4 is connected to the recovery tank 7 through a pipe. The waste gas discharged from the drying and dehydration section is cooled by the cooler 4 and then mixed with cooling water to recover ammonia water. The upper end of the furnace tube body 1 is connected to the heater 5. The heater 5 heats the waste gas discharged from the pyrolysis section to prevent the waste gas from causing blockage of the waste gas pipe. After calcination, the raw materials in the high-temperature calcination section are discharged from the discharge port 102 to the receiving silo 6 for collection.

[0037] For details, please refer to Figures 3-6 As shown, the furnace tube body 1 is fixedly connected to the base 103. A feed inlet 101 is provided at the upper end of one side of the furnace tube body 1, and a discharge outlet 102 is provided at the lower end of the other side of the furnace tube body 1. A servo motor 104 is installed on the side wall of the furnace tube body 1 near the feed inlet 101. The servo motor 104 is connected to a conveying screw shaft 17. The conveying screw shaft 17 is located inside the furnace tube body 1. The raw material enters the furnace tube body 1 from the feed inlet 101 and is discharged from the discharge outlet 102 after being pyrolyzed at high temperature by the furnace tube body 1.

[0038] The furnace tube body 1 is a three-section kiln. The upper end of the furnace tube body 1 is located between the drying and dehydration section and the pyrolysis section, where a first row of exhaust gas pipes 105 is installed to discharge exhaust gas containing ammonia. The first row of exhaust gas pipes 105 is connected to a cooler 4, which is fixed on a support 2. The cooler 4 is connected to a recovery tank 7. The ammonia water is captured by condensation through the cooler 4 and then recovered by the recovery tank 7. The upper end of the furnace tube body 1 is located between the pyrolysis section and the high-temperature calcination section, where a second row of exhaust gas pipes 106 is installed. The second row of exhaust gas pipes 106 is connected to a heater 5, which is fixed on a support 2. The heater 5 heats the exhaust gas pipeline connected to the second row of exhaust gas pipes 106 to 400°C throughout the process to prevent coking and blockage of the exhaust pipe, which would prevent the kiln from working.

[0039] Cooler 4 includes an outer cylinder 407 and an inner cylinder 408, with a cavity between them for injecting coolant. One end of the outer cylinder 407 is connected to a first inlet pipe 404, and the other end is connected to a first outlet pipe 405. The first inlet pipe 404 and the first outlet pipe 405 communicate with the cavity. Coolant enters the cavity from the first inlet pipe 404 and exits from the first outlet pipe 405, cooling the exhaust gas entering the inner cylinder 408. An end cap 406 is connected to the upper end of the outer cylinder 407, and the end cap 406 is attached to the inner cylinder. The inner cylinder 408 serves as a seal. The bottom of the inner cylinder 408 is connected to the recovery pipe 409, from which the condensed liquid is discharged. The bottom of one side of the inner cylinder 408 is connected to the first air inlet pipe 401, which penetrates the outer cylinder 407. A check valve 402 is installed on the first air inlet pipe 401. The end of the first air inlet pipe 401 is connected to the first exhaust pipe 105 via a flange. The upper part of the other side of the inner cylinder 408 is connected to the first exhaust pipe 403, which penetrates the outer cylinder 407. The first exhaust pipe 403 is used to connect to the exhaust gas treatment equipment.

[0040] The heater 5 includes an outer tube 501 and an inner tube 502. The outer tube 501 is made of insulation material. In this embodiment, the insulation material is made of polyurethane. An exhaust pipe 505 is provided inside the inner tube 502. A cavity is provided between the exhaust pipe 505 and the inner tube 502. The cavity is used to place an electric heating tube 503. The electric heating tube 503 is connected to the control box 504. One end of the exhaust pipe 505 is connected to the second row of exhaust pipes 106 through a flange. The other end of the exhaust pipe 505 is used to connect to the exhaust gas treatment equipment.

[0041] The top of the recovery tank 7 is equipped with a receiving pipe 701, which is connected to the recovery pipe 409 via a flange. The bottom of the recovery tank 7 is equipped with a discharge pipe 702, which is fitted with a valve. The recovery tank 7 is used to recover ammonia.

[0042] Before pyrolysis, a nitrogen generator supplies nitrogen to the furnace tube body 1 through the nitrogen inlet pipe 107 to expel the air inside the furnace tube body 1 and continuously injects nitrogen into the furnace tube body 1. The material enters the furnace tube body 1 from the feeding cylinder 3. The servo motor 104 drives the conveying screw shaft 17 to transport the material from the feed port 101. After pyrolysis in the furnace tube body 1, the material becomes high-purity carbon powder and is discharged from the discharge port 102. The waste gas and nitrogen generated by pyrolysis are discharged from the first exhaust pipe 105 and the second exhaust pipe 106. The continuous injection of nitrogen into the furnace tube body 1 can maintain an oxygen-free state and prevent the carbon powder from oxidizing at high temperature.

[0043] Raw materials enter the furnace tube body 1 through the feed inlet 101. After high-temperature pyrolysis in the furnace tube body 1, the drive motor drives the conveying screw shaft to rotate, and the pyrolyzed material is discharged from the discharge outlet 102. The ammonia water is captured by the cooler 4 through condensation, and then the ammonia water is recovered by the recovery tank 7. The heater 5 heats the waste gas pipeline connected to the second exhaust gas pipe 106, heating it to 300°C throughout the process to prevent coking and blockage of the waste discharge pipeline, which would prevent it from working.

[0044] For details, please refer to Figures 7-8 As shown, the feeding cylinder 3 is provided with a raw material inlet 301 for pouring materials into the feeding cylinder 3. The bottom of the feeding cylinder 3 is provided with a discharge pipe 302, which can be welded with a flange and connected to the feed inlet 101 through the flange. A valve 303 is installed on the discharge pipe 302. A drive motor 8 is installed at the upper end of the feeding cylinder 3. The drive motor 8 is connected to a stirring shaft 9. Several stirring paddles 10 are installed on the stirring shaft 9. A sleeve 11 is provided at the bottom end of the stirring shaft 9. The sleeve 11 is connected to a stirring component 12. The stirring component 12 is installed on the sleeve 11 by a fixing pin. The drive motor 8 drives the stirring shaft 9 and the stirring paddles 10 to rotate, stirring the material above the discharge pipe 302 to prevent the powder from agglomerating and avoid powder blockage at the discharge pipe 302.

[0045] The materials used in the pyrolysis production of high-purity carbon powder are resins or organic polymers. When these resins or organic polymers are fed, they are prone to agglomeration, which can cause blockages in the feed pipe. Therefore, an agitator is installed at the bottom of the feed cylinder to stir the material above the feed pipe and prevent blockages.

[0046] For details, please refer to Figures 9-10 As shown, the furnace tube body 1 includes an upper furnace body 13 and a lower furnace body 14. The upper furnace body 13 and the lower furnace body 14 are semi-cylindrical with cavities in the middle. The upper furnace body 13 and the lower furnace body 14 are mounted on a base 103, which supports the upper furnace body 13 and the lower furnace body 14. A feed inlet 101 is provided at the upper end of one side of the upper furnace body 13. A wiring pipe is also installed at the upper end of the upper furnace body 13 for threading wires. Fixed feet are provided at the edges of the upper furnace body 13 and the lower furnace body 14, and the upper furnace body 13 and the lower furnace body 14 are connected to the base 103 through the fixed feet.

[0047] Furthermore, a servo motor 104 is installed on the side of the upper furnace body 13 and the lower furnace body 14 near the feed inlet 101. The servo motor 104 is connected to the conveying screw shaft 17, which is located in the cavity between the upper furnace body 13 and the lower furnace body 14. The conveying screw shaft 17 is rotatably connected to the upper furnace body 13 and the lower furnace body 14 through bearings. A discharge port 102 is installed at the lower end of the side of the lower furnace body 14 away from the servo motor 104. The raw material enters the cavity between the upper furnace body 13 and the lower furnace body 14 from the feed inlet 101. The servo motor 104 drives the conveying screw shaft 17 to rotate, conveying the raw material from the feed inlet 101 to the discharge port 102 for discharge. The raw material is then decomposed into combustible gas, liquid and solid residue by high-temperature heating.

[0048] In this embodiment, heating layers 15 are installed on the inner walls of both the upper furnace body 13 and the lower furnace body 14. The heating layers 15 are made of high-temperature resistant alloy materials, which is beneficial for heat conduction. An inner lining layer 16 is provided on the inner wall of the heating layers 15. The inner lining layer 16 is made of graphite tiles, which has the effect of high temperature resistance and effectively avoids impurities generated by high-temperature reactions. During the high-temperature pyrolysis of raw materials, the oxidation of the inner lining layer made of metal materials is avoided, thereby improving the purity of the high-purity carbon powder produced by pyrolysis.

[0049] The heating layer 15 includes a shell 151 and heating elements 152. The shell 151 is arranged in a semi-circular shape and has a cavity inside. The heating elements 152 are arranged in the cavity and are evenly distributed in the cavity. The heating elements 152 are tubular structures with an axial length. The axial direction of the heating elements 152 is parallel to the axial direction of the upper furnace body 13 or the lower furnace body 14. The heating elements 152 are spiral heating wires supported by ceramic tubes. The heating elements 152 are connected to wires, which pass through a conduit to connect to an external temperature controller.

[0050] For details, please refer to Figures 11-12 As shown, the conveying spiral shaft 17 includes a first spiral shaft 18, a second spiral shaft 19, and a third spiral shaft 20. The first spiral shaft 18 is detachably connected to the second spiral shaft 19, and the second spiral shaft 19 is detachably connected to the third spiral shaft 20. At least one second spiral shaft 19 is provided.

[0051] In this embodiment, the first spiral shaft 18, the second spiral shaft 19, and the third spiral shaft 20 are made of graphite material. The spiral shafts are connected in multiple segments. On the one hand, this avoids the problem of using graphite material to press a long spiral blade into a single piece and then breaking it apart. On the other hand, different numbers of second spiral shafts 19 can be selected according to the length of different furnace cavities. Furthermore, the first spiral shaft 18, the second spiral shaft 19, and the third spiral shaft 20 are pressed and formed separately. Compared to the integral molding of a long spiral blade, this reduces the length of the mold, improves the quality of the finished product, and greatly reduces the cost.

[0052] Specifically, the first spiral shaft 18 has a slot 181 at one end and is connected to the servo motor 104 at the other end. The second spiral shaft 19 has a protrusion 191 at one end and a slot 181 at the end of the second spiral shaft 19 away from the first spiral shaft 18. The second spiral shaft 19 and the first spiral shaft 18 are installed by the cooperation of the protrusion 191 and the slot 181. The third spiral shaft 20 has a protrusion 191 at one end for connecting with the slot 181 of the second spiral shaft 19, thereby enabling the installation of the first spiral shaft 18, the second spiral shaft 19 and the third spiral shaft 20.

[0053] For details, please refer to Figures 13-14 As shown, the receiving hopper 6 adopts a three-layer structure design, including an outer shell 601, an inner shell 602, and a high-temperature resistant inner lining 603. The inner shell 602 is located outside the outer shell 601, and there is a cavity between the inner shell 602 and the outer shell 601. A heat dissipation assembly is installed on the inner shell 602. The heat dissipation assembly includes a first and second liquid inlet pipe 66 installed at the bottom of one side of the inner shell 602, a second liquid outlet pipe 67 installed at the top of one side of the inner shell 602, and a drain pipe 69 installed at the bottom of the other side of the inner shell 602. Coolant enters the cavity from the first and second liquid inlet pipes 66 and then exits from the second liquid outlet pipe 67. The coolant gradually fills the cavity from the bottom, so that there is always coolant in the cavity, which dissipates heat from the outer shell 601, thereby improving the cooling efficiency and dissipating heat from the interior of the outer shell 601 through heat conduction. The high-purity toner is cooled down. After the high-purity toner cools down, the coolant in the cavity can be discharged from the drain pipe 69. A nitrogen inlet pipe 65 is installed on the outer shell 601. The nitrogen inlet pipe 65 passes through the inner shell 602 and connects to the inside of the outer shell 601. A nitrogen vent pipe 68 is also installed on the outer shell 601. Nitrogen enters the outer shell 601 from the nitrogen inlet pipe 65 and discharges the air inside the outer shell 601 through the nitrogen vent pipe 68, keeping the inside of the outer shell 601 in an oxygen-free state. This has a cooling effect on the high-purity toner and prevents the high-purity toner from being oxidized inside the outer shell 601. The bottom of the outer shell 601 is connected to the discharge pipe 64. A ball valve is installed on the discharge pipe 64. After the high-purity toner cools down, the ball valve is opened to discharge the high-purity toner from the discharge pipe 64 for easy unloading.

[0054] A flange 61 is installed at the top opening of the outer casing 601. A hose 62 is connected through the flange 61. The hose 62 is connected to a quick-release flange. The quick-release flange facilitates the disassembly and assembly of the pyrolysis kiln equipment with the discharge port 102.

[0055] In this embodiment, the hose 62 is a high-temperature resistant hose. The high-purity carbon powder produced by pyrolysis has a high temperature, so a high-temperature resistant hose is required for connection.

[0056] The receiving hopper 6 adopts a three-layer structure design, with a graphite tile inner lining and a double-layer outer wall connected to heat dissipation components to remove heat and achieve rapid cooling. The receiving hopper is equipped with a quick-release flange and a high-temperature resistant hose for easy material receiving in the pyrolysis kiln. After the high-purity carbon powder cools down, the ball valve is opened to discharge the high-purity carbon powder from the discharge pipe for easy unloading.

[0057] Temperature sensor 63 is also installed on the receiving hopper 6 to monitor the temperature inside the receiving hopper 6. After the high-purity carbon powder inside the receiving hopper 6 cools down to below 50 degrees, the receiving hopper 6 is separated from the pyrolysis kiln equipment to avoid oxidation caused by the high-temperature high-purity carbon powder coming into contact with air.

[0058] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A continuous production pyrolysis kiln equipment, utilizing resin or organic polymer pyrolysis to produce high-purity carbon powder material, comprising a furnace tube body (1), characterized in that, The furnace tube body (1) is supported by a bracket (2). The inlet (101) of the furnace tube body (1) is connected to the upper material cylinder (3). The outlet (102) of the furnace tube body (1) is connected to the receiving bin (6). The furnace tube body (1) adopts a three-section structure. The upper end of the furnace tube body (1) inside the furnace tube body (1) is connected to a cooler (4). The cooler (4) is connected to a recovery tank (7) through a pipe. The upper end of the furnace tube body (1) is connected to a heater (5). The exhaust gas discharged from the pyrolysis section is heated by the heater (5). The three-section structure consists of a drying and dehydration section, a pyrolysis section, and a high-temperature calcination section. The temperature of the drying and dehydration section is 100-200 degrees Celsius, and it is used to remove moisture from the raw materials. The temperature of the pyrolysis section is 200-400 degrees Celsius, and it is used to discharge organic waste gas. The temperature of the high-temperature pyrolysis section is 1200-1300 degrees Celsius, and it is used to pyrolyze the raw materials at high temperature. The upper end of the furnace tube body (1) is provided with a first row of exhaust gas pipes (105) between the drying and dehydration section and the pyrolysis section. The first row of exhaust gas pipes (105) is connected to a cooler (4). The cooler (4) is connected to a recovery tank (7) through a pipe. The upper end of the furnace tube body (1) is provided with a second row of exhaust gas pipes (106) between the pyrolysis section and the high-temperature calcination section. The second row of exhaust gas pipes (106) is connected to a heater (5). The exhaust gas discharged from the pyrolysis section is heated by the heater (5). The inner wall of the furnace tube body (1) is provided with an inner lining layer (16), which is made of graphite tile; The receiving hopper (6) adopts a three-layer structure design, including an outer shell (601), an inner shell (602), and a high-temperature resistant inner liner (603). The inner shell (602) is provided inside the outer shell (601), and there is a cavity between the inner shell (602) and the outer shell (601). A heat dissipation assembly is installed on the inner shell (602). The heat dissipation assembly includes a second liquid inlet pipe (66) installed at the bottom of one side of the outer shell (601), a second liquid outlet pipe (67) installed at the top of one side of the outer shell (601), and a liquid drain pipe (69) installed at the bottom of the other side of the outer shell (601). Coolant enters the cavity from the second liquid inlet pipe (66) and is discharged from the second liquid outlet pipe (67). The coolant gradually fills the cavity from the bottom, so that there is always coolant in the cavity, which dissipates heat from the outer shell (601) and can improve the cooling efficiency. The heat is transferred to the inner shell (602) through heat conduction. The high-purity carbon powder inside is cooled down. After the high-purity carbon powder is cooled down, the coolant in the cavity can be discharged from the drain pipe 69. A nitrogen inlet pipe (65) is installed on the outer shell (601). The nitrogen inlet pipe (65) passes through the outer shell (601) and connects to the inside of the inner shell (602). A nitrogen exhaust pipe (68) is also installed on the outer shell (601). Nitrogen enters the inner shell (602) from the nitrogen inlet pipe (65) and exhausts the air inside the inner shell (602) from the nitrogen exhaust pipe (68), keeping the inside of the inner shell (602) in an oxygen-free state to cool the high-purity carbon powder.

2. The continuous production pyrolysis kiln equipment according to claim 1, characterized in that, The furnace tube body (1) is fixedly connected to the base (103). A feed inlet (101) is provided at the upper end of one side of the furnace tube body (1), and a discharge outlet (102) is provided at the lower end of the other side of the furnace tube body (1). A servo motor (104) is installed on the side wall of the furnace tube body (1) near the feed inlet (101). The servo motor (104) is connected to the conveying screw shaft (17), which is located inside the furnace tube body (1).

3. The continuous production pyrolysis kiln equipment according to claim 1, characterized in that, The cooler (4) includes an outer cylinder (407) and an inner cylinder (408). A cavity is provided between the outer cylinder (407) and the inner cylinder (408). One end of the outer cylinder (407) is connected to a first liquid inlet pipe (404), and the other end of the outer cylinder (407) is connected to a first liquid outlet pipe (405). The first liquid inlet pipe (404) and the first liquid outlet pipe (405) communicate with the cavity.

4. The continuous production pyrolysis kiln equipment according to claim 1, characterized in that, The heater (5) includes an outer tube (501) and an inner tube (502). An exhaust pipe (505) is provided inside the inner tube (502). A cavity is provided between the exhaust pipe (505) and the inner tube (502) for placing an electric heating tube (503).

5. The continuous production pyrolysis kiln equipment according to claim 1, characterized in that, The top of the recycling tank (7) is provided with a receiving pipe (701), and the bottom of the recycling tank (7) is provided with a discharge pipe (702).

6. The continuous production pyrolysis kiln equipment according to claim 1, characterized in that, The feeding cylinder (3) is provided with a raw material inlet (301). A drive motor (8) is installed at the upper end of the feeding cylinder (3). The drive motor (8) is connected to the stirring shaft (9). Several stirring paddles (10) are installed on the stirring shaft (9). A sleeve (11) is provided at the bottom end of the stirring shaft (9). The sleeve (11) is connected to the stirring component (12).

7. The continuous production pyrolysis kiln equipment according to claim 1, characterized in that, The furnace tube body (1) includes an upper furnace body (13) and a lower furnace body (14). The upper furnace body (13) and the lower furnace body (14) are semi-cylindrical with a cavity in the middle. The inner walls of the upper furnace body (13) and the lower furnace body (14) are equipped with heating layers (15).

8. The continuous production pyrolysis kiln equipment according to claim 2, characterized in that, The conveying spiral shaft (17) includes a first spiral shaft (18), a second spiral shaft (19) and a third spiral shaft (20). The first spiral shaft (18) is detachably connected to the second spiral shaft (19), and the second spiral shaft (19) is detachably connected to the third spiral shaft (20). At least one second spiral shaft (19) is provided.

Images