Hard activated carbon high-temperature firing processing equipment

Abstract

The invention relates to the technical field of activated carbon firing, and particularly discloses hard activated carbon high-temperature firing processing equipment which comprises a rotary furnace body, a supporting plate is arranged on the lower side of the rotary furnace body, mounting frames are fixedly connected to the two sides of the top end of the supporting plate, and a heating mechanism is arranged on the rotary furnace body. Through the synergistic effect of the first spiral plate, the second spiral plate, the third spiral plate and the material stirring teeth, the problems that an existing straight shoveling plate is insufficient in material turning, and materials are caked and stacked are thoroughly solved, the materials can be fully turned in the furnace and make contact with a high-temperature atmosphere and an activating agent without dead corners, and the energy consumption is reduced. Meanwhile, the activating agent is uniformly distributed in each part of the activation area through the axial multi-point steam distribution structure, so that uniform activation of materials is realized, pore distribution of finished activated carbon is more uniform, the adsorption performance and the product consistency are greatly improved, and the production requirements of high-quality hard activated carbon are met.

Description

Technical Field

[0001] This invention relates to the field of activated carbon calcination technology, and in particular to a high-temperature calcination processing device for hard activated carbon. Background Technology

[0002] Hard activated carbon, as an important advanced inorganic non-metallic material, is widely used in water treatment, waste gas treatment, catalyst carrier and other fields due to its excellent mechanical strength, wear resistance and adsorption performance. Hard activated carbon needs to be calcined at high temperature and requires high temperature calcination processing equipment.

[0003] For example, a high-temperature calcination processing device for hard activated carbon, with announcement number CN120518077A, solves the problem that in the existing process of calcining hard activated carbon, the calcination quality of the activated carbon is easily affected due to the temperature difference between the gas introduced and the calcination temperature, and it is not easy to control the stable ratio of the introduced gas. It includes a circulating feeding mechanism and a high-temperature calcination module. The circulating feeding mechanism is installed inside the high-temperature calcination module. The high-temperature calcination module is composed of a circulating gas supply mechanism and a calcination isolation mechanism. The circulating gas supply mechanism is located at the upper end of the calcination isolation mechanism. The circulating gas supply mechanism includes a mixing gas delivery box, and a collection box is installed on both sides of the mixing gas delivery box.

[0004] While the aforementioned patents have addressed the issues of temperature differences between the introduced gas and the firing temperature during the existing hard activated carbon firing process, which can affect the quality of the activated carbon and make it difficult to control the stable proportion of the introduced gas, existing high-temperature hard activated carbon firing equipment still has some shortcomings that need improvement. The inner wall of the furnace is only equipped with simple straight-bar lifting plates, and the simple structure of the lifting plates cannot fully turn and disperse the material, resulting in the material being prone to agglomeration and accumulation, and uneven heating in some areas. Some materials are not fully burned, while others are not fully sintered, which seriously affects the consistency of product performance. In addition, the heating system adopts an integrated heating method for the entire furnace, which cannot independently control the temperature of the three different process stages of preheating, carbonization, and activation. The temperature fluctuation is large, making it difficult to match the optimal temperature requirements of each stage, resulting in unstable hardness and pore structure of the finished activated carbon. Summary of the Invention

[0005] The purpose of this invention is to provide a high-temperature calcination processing device for hard activated carbon to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides a high-temperature calcination processing device for hard activated carbon, comprising a rotary kiln body, a support plate on the lower side of the rotary kiln body, mounting brackets fixedly connected to both sides of the top of the support plate, a heating mechanism on the rotary kiln body, a drive motor fixedly connected to one side of the support plate, a first transmission mechanism on one side of the drive motor, a conveying mechanism inside the rotary kiln body, the drive motor being connected to the conveying mechanism via the first transmission mechanism, a second transmission mechanism on the other side of the drive motor, the rotary kiln body being rotatably connected between the two mounting brackets via the second transmission mechanism, a feed pipe on the right side of the rotary kiln body, a discharge pipe fixedly connected to the side of the rotary kiln body away from the feed pipe, and an activator supply mechanism on the side of the rotary kiln body away from the drive motor.

[0007] Furthermore, a first docking plate is fixedly connected to one side of the mounting frame, and a second docking plate is fixedly connected to the other side of the mounting frame. The feed pipe is fixedly connected to one side of the first docking plate, and the rotary kiln body is rotatably connected between the first docking plate and the second docking plate.

[0008] Furthermore, the heating mechanism includes a resistance wire, which is fixedly connected to the right cavity of the rotary kiln body. A natural gas low-NOx burner is provided in the middle of the rotary kiln body. An electric heating tube is fixedly connected to the left cavity of the rotary kiln body. An assembly box is fixedly connected to one side of the support plate. The natural gas low-NOx burner is fixedly connected to the assembly box. A buffer groove is provided on one side of the inside of the assembly box. The output nozzle of the natural gas low-NOx burner is fixedly connected to the inside of the buffer groove.

[0009] Furthermore, the conveying mechanism includes a first spiral plate, which is rotatably connected to the inside left side of the rotary kiln body. A second spiral plate is fixedly connected to one side of the first spiral plate, and a third spiral plate is fixedly connected to the side of the second spiral plate away from the first spiral plate. The pitch of the spiral plate in the carbonization zone is greater than that in the preheating zone and the activation zone. The first spiral plate is located at the resistance wire, the second spiral plate is located at the natural gas low-NOx burner, and the third spiral plate is located at the electric heating tube. Material feeding teeth are fixedly connected to the outer surfaces of the first, second, and third spiral plates.

[0010] Furthermore, the first transmission mechanism includes a driving synchronous pulley, which is fixedly connected to the output shaft of the drive motor. The driving synchronous pulley is connected to a driven synchronous pulley via a synchronous belt. A rotating rod is fixedly connected to one side of the driven synchronous pulley. The first spiral plate, the second spiral plate, and the third spiral plate are all fixedly connected to the rotating rod. A bracket is fixedly connected to both sides of one end of the mounting bracket. A tensioning wheel is rotatably connected to one side of the bracket. One side of the tensioning wheel is in contact with one side of the synchronous belt.

[0011] Furthermore, the second transmission mechanism includes a first shaft, which is fixedly connected to the output shaft of the drive motor near the driving synchronous pulley. A first bevel gear is fixedly connected to one side of the first shaft, and a second bevel gear is meshed with one side of the first bevel gear. A second shaft is fixedly connected to one side of the second bevel gear, and a third bevel gear is fixedly connected to the side of the second bevel gear away from the first bevel gear. A third shaft is fixedly connected to one side of the third bevel gear. The first shaft, second shaft, and third shaft are all rotatably connected to the support plate via bearing seats. A driving gear is fixedly connected to the side of the third shaft away from the third bevel gear, and a driven gear is meshed with one side of the driving gear. The driven gear is fixedly connected to one side of the rotary kiln body.

[0012] Furthermore, the activator supply mechanism includes a steam generator, which is fixedly connected to the side of the mounting frame away from the feed pipe. The output end of the steam generator is fixedly connected to a first gas supply pipe, and a second gas supply pipe is rotatably connected to one side of the first gas supply pipe. A diverter pipe is fixedly connected to the side of the second gas supply pipe away from the first gas supply pipe. The diverter pipe is located inside the rotary kiln body and is fixedly connected to the rotary kiln body. Gas distribution pipes are fixedly connected to both sides of one end of the diverter pipe. The gas distribution pipes are fixedly connected to the inside of the rotary kiln body and are located on both sides of the third spiral plate end. An atomizing nozzle is fixedly connected to one end of the gas distribution pipe, and multiple atomizing nozzles are provided.

[0013] Compared with the prior art, the beneficial effects of the present invention are: Firstly, in this invention, the synergistic effect of the first spiral plate, the second spiral plate, the third spiral plate and the feeding teeth completely solves the problems of insufficient material turning and material agglomeration in existing straight strip lifting plates. The material can be fully turned in the furnace and come into contact with the high-temperature atmosphere and activator without dead corners, greatly improving the uniformity of heating. At the same time, the axial multi-point steam distribution structure makes the activator evenly distributed in all parts of the activation zone, realizing uniform activation of the material. The pore distribution of the finished activated carbon is more uniform, and the adsorption performance and product consistency are greatly improved, meeting the production requirements of high-quality hard activated carbon.

[0014] Secondly, this invention, through a three-stage independent heating and temperature control structure, can achieve independent and precise temperature control for the three different process stages of preheating, carbonization, and activation. The temperature fluctuation is small and the temperature control accuracy is high, which effectively avoids the temperature deviation problem caused by existing whole-furnace heating. It ensures that each process stage is in the optimal temperature environment, so that the material is fully preheated, thoroughly carbonized, and uniformly activated. In this way, it ensures the mechanical strength and pore structure of the finished activated carbon are stable, improves product quality, and reduces the rate of unqualified products caused by improper temperature control.

[0015] Thirdly, in this invention, the reason for using a larger pitch (second spiral plate) in the carbonization zone is not simply to speed up the conveying process, but to match and coordinate with the high calorific value and rapid heating characteristics of the natural gas low-NOx burner. If the carbonization zone uses the same small pitch as the preheating zone, the material will remain in the high-temperature flame zone for too long and undergo excessive sintering. Similarly, the use of a small pitch in the preheating and activation zones is to match the slow heating characteristics of the resistance wire and electric heating tube, ensuring that the material has enough time for moisture removal and pore development. The three-stage variable pitch and the three-stage independent temperature control form an inseparable closed-loop synergy in terms of physical space and reaction time, thereby fundamentally solving the defect of unstable pore structure in the finished product of traditional whole-furnace heating equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure viewed from below in this invention; Figure 3 This is a partial structural diagram of the second transmission mechanism in this invention; Figure 4 This is a schematic diagram of the conveying mechanism in this invention; Figure 5 This is a schematic diagram of the rotary kiln body structure in this invention; Figure 6 This is a schematic diagram of the assembly box structure in this invention; Figure 7 This is a schematic diagram of the activator supply mechanism in this invention; Figure 8 In this invention Figure 1 A magnified structural diagram at point A; Figure 9 In this invention Figure 3 A magnified structural diagram at point B.

[0017] In the diagram: 1. Rotary furnace body; 2. Support plate; 3. Mounting frame; 31. First docking plate; 32. Second docking plate; 4. Heating mechanism; 41. Resistance wire; 42. Natural gas low-NOx burner; 421. Assembly box; 422. Buffer tank; 43. Electric heating tube; 5. Conveying mechanism; 51. First spiral plate; 52. Second spiral plate; 53. Third spiral plate; 54. Feeding teeth; 6. Drive motor; 7. First transmission mechanism; 71. Driving synchronous pulley; 72. Synchronous belt; 73. Driven synchronous pulley; 74. Support... 75. Frame; 76. Tensioning wheel; 8. Rotating rod; 9. Second transmission mechanism; 10. First shaft; 11. First bevel gear; 12. Second shaft; 13. Second bevel gear; 14. Second bevel gear; 15. Third bevel gear; 16. Third shaft; 17. Driving gear; 18. Driven gear; 19. Shaft seat; 10. Feed pipe; 11. Discharge pipe; 11. Activator supply mechanism; 111. Steam generator; 112. First air supply pipe; 113. Second air supply pipe; 114. Diverter pipe; 115. Air distribution pipe; 116. Atomizing nozzle. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figure 1 - Figure 9In this embodiment of the invention, a high-temperature calcination processing device for hard activated carbon includes a rotary kiln body 1. A support plate 2 is provided on the lower side of the rotary kiln body 1. Mounting brackets 3 are fixedly connected to both sides of the top of the support plate 2. A heating mechanism 4 is provided on the rotary kiln body 1. A drive motor 6 is fixedly connected to one side of the support plate 2. A first transmission mechanism 7 is provided on one side of the drive motor 6. A conveying mechanism 5 is provided inside the rotary kiln body 1. The drive motor 6 is connected to the conveying mechanism 5 via the first transmission mechanism 7. A second transmission mechanism 8 is provided on the other side of the drive motor 6. The rotary kiln body 1 is rotatably connected between the two mounting brackets 3 via the second transmission mechanism 8. A feed pipe 9 is provided on one side of the right end of the rotary kiln body 1. A discharge pipe 10 is fixedly connected to the side of the rotary kiln body 1 away from the feed pipe 9. An activator supply mechanism 11 is provided on the side of the rotary kiln body 1 away from the drive motor 6. The rotary kiln body 1 is arranged from right to left as a preheating zone, a carbonization zone, and an activation zone. Through the coordinated operation of each mechanism, the core technical defects of existing high-temperature firing equipment for hard activated carbon, such as material agglomeration, uneven heating, inaccurate temperature control, and uneven distribution of activator, are specifically addressed. This enables continuous processing of materials from feeding, preheating, carbonization, activation to discharge, ensuring that the materials reach the optimal processing state at each process stage. This effectively improves the mechanical strength, pore distribution uniformity, and adsorption performance of the finished activated carbon, reduces the rate of defective products, and significantly improves product quality compared to existing equipment.

[0020] Please see Figure 1 The mounting frame 3 has a first docking plate 31 fixedly connected to one side and a second docking plate 32 fixedly connected to the other side. The feed pipe 9 is fixedly connected to one side of the first docking plate 31. The rotary kiln body 1 is rotatably connected between the first docking plate 31 and the second docking plate 32. Through the cooperation of the mounting frame 3, the first docking plate 31, and the second docking plate 32, the rotary kiln body 1 is supported and rotated, avoiding deviation and shaking of the rotary kiln body 1 during high-speed rotation, ensuring stable material conveying in the furnace, and achieving precise docking between the feed pipe 9 and the rotary kiln body 1 to prevent material leakage during feeding, as well as to prevent leakage of high-temperature gas and activator in the furnace, reducing material loss and energy waste, and facilitating the use of other structures in conjunction with the rotary kiln body 1.

[0021] Please see Figure 5The heating mechanism 4 includes a resistance wire 41, which is fixedly connected to the right cavity of the rotary kiln body 1. A natural gas low-NOx burner 42 is located in the middle of the rotary kiln body 1. An electric heating tube 43 is fixedly connected to the left cavity of the rotary kiln body 1. An assembly box 421 is fixedly connected to one side of the support plate 2, and the natural gas low-NOx burner 42 is fixedly connected to the assembly box 421. A buffer groove 422 is provided on one side of the interior of the assembly box 421. The output nozzle of unit 2 is fixedly connected inside the buffer tank 422. The natural gas low-NOx burner 42 is installed at an angle, with its output nozzle avoiding the direct beam direction of the rotary kiln body 1. This allows the high-temperature flame to be buffered by the buffer tank 422 before indirectly acting on the external heating surface of the rotary kiln body 1. Through the cooperation of the resistance wire 41, the natural gas low-NOx burner 42, the electric heating tube 43, the assembly box 421, and the buffer tank 422, a three-section independent heating structure is constructed, corresponding to the three process stages of preheating, carbonization, and activation, respectively, replacing the existing integrated heating system. The integrated furnace heating method can provide appropriate heat according to the process requirements of each stage. At the same time, the buffer tank 422 can buffer the high-temperature initial section output by the natural gas low-NOx burner 42, so that it faces the external heating surface of the furnace body, avoiding local temperature rise. This effectively solves the problem of large temperature fluctuations and inability to accurately match the temperature requirements of each process stage in existing equipment, ensuring that the hardness and pore structure of the finished activated carbon meet the requirements. Specifically, the resistance wire 41 is wound around the rotary furnace body 1 corresponding to the preheating zone. After the resistance wire 41 is energized, it will heat up and the heat will be slowly transferred to the furnace to preheat the material. The burner is installed at an angle in the rotary furnace body 1 corresponding to the carbonization zone. The burner burns natural gas to produce a high-temperature flame, but the flame is not directly facing the furnace body, but facing the external heating surface of the furnace body. The heat of the high-temperature flame first heats the outer shell of the furnace body, and then is transferred to the furnace cavity through the insulation layer of the inner wall of the furnace body to achieve material carbonization. The electric heating tube 43 is embedded in the rotary furnace body 1 corresponding to the activation zone. After the electric heating tube 43 is energized, it will heat up and activate the material.

[0022] Please see Figure 4The conveying mechanism 5 includes a first spiral plate 51, which is rotatably connected to the inside left side of the rotary kiln body 1. A second spiral plate 52 is fixedly connected to one side of the first spiral plate 51, and a third spiral plate 53 is fixedly connected to the side of the second spiral plate 52 away from the first spiral plate 51. The pitch of the spiral plates in the carbonization zone is greater than that in the preheating zone and the activation zone. The first spiral plate 51 is located at the resistance wire 41, the second spiral plate 52 is located at the natural gas low-NOx burner 42, and the third spiral plate 53 is located at the electric heating tube 43. All three spiral plates (1, 2, and 3) have fixedly connected baffles on their outer surfaces. Material teeth 54; through the cooperation of the first spiral plate 51, the second spiral plate 52, the third spiral plate 53, and the material teeth 54, it replaces the existing simple straight bar lifting plate, which facilitates the rapid advancement of materials and the removal of volatiles during the carbonization stage. At the same time, it extends the residence time of materials in the preheating zone and the activation zone, ensuring sufficient preheating and thorough activation. The material teeth 54 are evenly distributed between the first spiral plate 51, the second spiral plate 52, and the third spiral plate 53. Working together with the first spiral plate 51, the second spiral plate 52, and the third spiral plate 53, they can fully turn and disperse the materials in the furnace, avoid material agglomeration and accumulation, and ensure that the materials are in full contact with the high-temperature atmosphere and activator in the furnace, so as to achieve uniform heating and uniform activation.

[0023] Please see Figure 8 The first transmission mechanism 7 includes a driving synchronous pulley 71, which is fixedly connected to the output shaft of the drive motor 6. The driving synchronous pulley 71 is driven by a driven synchronous pulley 73 via a synchronous belt 72. A rotating rod 76 is fixedly connected to one side of the driven synchronous pulley 73. The first spiral plate 51, the second spiral plate 52, and the third spiral plate 53 are all fixedly connected to the rotating rod 76. A bracket 74 is fixedly connected to both sides of one end of the mounting bracket 3. A tensioning wheel 75 is rotatably connected to one side of the bracket 74. One side of the tensioning wheel 75 is connected to the synchronous belt. One side of 72 is in contact with the synchronous belt; through the cooperation of the active synchronous pulley 71, synchronous belt 72, driven synchronous pulley 73, rotating rod 76, bracket 74, and tensioning pulley 75, the power of the drive motor 6 is stably transmitted to the conveying mechanism 5, ensuring that the first spiral plate 51, the second spiral plate 52, the third spiral plate 53 and the material-pulling teeth 54 rotate at a uniform speed, ensuring the material is turned and conveyed, avoiding insufficient material turning and uneven conveying speed due to unstable power transmission, further solving the problems of material agglomeration and uneven heating, and at the same time, the tensioning pulley 75 can prevent the synchronous belt 72 from loosening, ensuring normal power transmission.

[0024] Please see Figure 1 , Figure 2 , Figure 9The second transmission mechanism 8 includes a first shaft 81, which is fixedly connected to the output shaft of the drive motor 6 near the driving synchronous pulley 71. A first bevel gear 82 is fixedly connected to one side of the first shaft 81. A second bevel gear 84 is meshed with one side of the first bevel gear 82. A second shaft 83 is fixedly connected to one side of the second bevel gear 84. A third bevel gear 85 is fixedly connected to the side of the second bevel gear 84 away from the first bevel gear 82. A third shaft 86 is fixedly connected to one side of the third bevel gear 85. The first shaft 81, the second shaft 83, and the third shaft 86 are all rotatably connected to the support plate 2 via a bearing 89. A driving gear 87 is fixedly connected to the side of the third shaft 86 away from the third bevel gear 85. A driven gear 88 is meshed with one side of the driving gear 87. The driven gear 88 is fixedly connected to one side of the rotary kiln body 1. The external meshing structure of the driving gear 87 and the driven gear 88 forms a reverse meshing structure. The transmission assembly, combined with the synchronous belt 72 of the first transmission mechanism 7, ensures that the rotation direction of the rotary kiln body 1 driven by the same drive motor 6 is opposite to that of the conveying mechanism 5. Through the cooperation of the first shaft 81, the first bevel gear 82, the second bevel gear 84, the second shaft 83, the third bevel gear 85, the third shaft 86, the bearing 89, the driving gear 87, and the driven gear 88, a single drive motor 6 can simultaneously output power, driving the conveying mechanism 5 and the rotary kiln body 1 to rotate synchronously, and making the rotation direction of the rotary kiln body 1 opposite to that of the conveying mechanism 5. The rotary kiln body 1 rotates at a uniform speed under power drive, which can further agitate the material in the furnace during rotation. Combined with the conveying and agitating action of the conveying mechanism 5, it further improves the uniformity of material heating, avoids local accumulation of material, and ensures stable rotation of the rotary kiln body 1, avoiding material conveying deviation due to unstable rotation. This effectively solves the technical problem of uneven material heating in existing equipment.

[0025] Please see Figure 1 and Figure 5The activator supply mechanism 11 includes a steam generator 111, which is fixedly connected to the mounting frame 3 on the side away from the feed pipe 9. A first gas supply pipe 112 is fixedly connected to the output end of the steam generator 111. A second gas supply pipe 113 is rotatably connected to one side of the first gas supply pipe 112. A branch pipe 114 is fixedly connected to the side of the second gas supply pipe 113 away from the first gas supply pipe 112. The branch pipe 114 is located inside the rotary kiln body 1 and is fixedly connected to the rotary kiln body 1. Gas distribution pipes 115 are fixedly connected to both sides of one end of the branch pipe 114. The gas distribution pipes 115 are fixedly connected inside the rotary kiln body 1 and located at the third spiral plate. On both sides of end 53, one end of the gas distribution pipe 115 is fixedly connected to an atomizing nozzle 116, and multiple atomizing nozzles 116 are provided. Through the cooperation of the steam generator 111, the first gas supply pipe 112, the second gas supply pipe 113, the diversion pipe 114, the gas distribution pipe 115, and the atomizing nozzles 116, a multi-point steam distribution structure is constructed, so that the atomizing nozzles 116 rotate with the rotary kiln body 1, replacing the existing single-end air intake method, so that the activator steam can be evenly sprayed to all parts of the activation zone in the furnace, ensuring that the material can fully contact the activator, solving the problem of over-activation or under-activation of materials caused by uneven distribution of activator in existing equipment, thereby improving the uniformity of pore distribution of the finished activated carbon and further ensuring product quality.

[0026] The working principle of this invention is as follows: The resistance wire 41, the natural gas low-NOx burner 42, and the electric heating tube 43 in the heating mechanism 4 are activated. Through three independent heating sections, the right preheating zone, the middle carbonization zone, and the left activation zone of the rotary kiln body 1 are precisely preheated, ensuring that each zone reaches the optimal temperature required for its corresponding process. This segmented independent temperature control replaces the traditional integrated heating system, effectively preventing excessive temperature fluctuations and ensuring precise temperature matching for each process stage, laying a stable foundation for subsequent material processing. Simultaneously, the buffer tank 422 within the assembly box 421 buffers the high temperature output from the natural gas low-NOx burner 42, preventing sudden temperature increases in the furnace body, protecting the furnace structure, and preventing material damage due to localized high temperatures. After preheating, the drive is activated. The drive motor 6 drives the conveying mechanism 5 through the first transmission mechanism 7. Specifically, the driving synchronous pulley 71 drives the driven synchronous pulley 73 and the rotating rod 76 to rotate through the synchronous belt 72, thereby driving the first spiral plate 51, the second spiral plate 52, the third spiral plate 53, and the material-feeding teeth 54 on the surface to rotate at a uniform speed. At the same time, the drive motor 6 drives the rotary kiln body 1 to rotate at a uniform speed through the second transmission mechanism 8. Specifically, the first shaft 81 drives the first bevel gear 82 to rotate, and after being transmitted through the second bevel gear 84 and the third bevel gear 85, the driving gear 87 on the third shaft 86 drives the driven gear 88 and the rotary kiln body 1 to rotate. The rotary kiln body 1 and the conveying mechanism 5 rotate in opposite directions. The single drive motor 6 achieves dual power output, synchronously driving the conveying mechanism 5. The rotary kiln body 1 operates in conjunction with the tensioning wheel 75 on the support 74, ensuring stable transmission of the synchronous belt 72. This eliminates the need for multiple additional drive devices, saving energy. Furthermore, the rotation of the rotary kiln body 1 and the tilting and conveying of the conveying mechanism 5 work in tandem to prevent material accumulation. The processed hard activated carbon raw material is fed into the rotary kiln body 1 through the feed pipe 9. Upon entering, the material first reaches the preheating zone on the right. The third spiral plate 53 and the material-pulling teeth 54 located at the resistance wire 41 thoroughly tilt and disperse the material, preventing agglomeration and ensuring uniform contact with the high temperature of the preheating zone for thorough preheating. The third spiral plate 53, in conjunction with the material-pulling teeth 54, replaces the traditional simple straight-bar lifting plate, improving the uniformity of material heating and removing some moisture from the material, thus preparing it for subsequent carbonization. The preheated material is conveyed into the central carbonization zone by the third spiral plate 53. The pitch of the second spiral plate 52 in this zone is larger than that in the preheating and activation zones. The key technology lies in the differentiated pitch design, which allows the material to advance rapidly in the carbonization zone. At the same time, the material-pulling teeth 54 continuously agitate the material, ensuring that the material comes into full contact with the high temperature provided by the natural gas low-NOx burner 42, achieving thorough carbonization, removing volatiles from the material, and ensuring consistent carbonization effect. After carbonization, the material is conveyed to the left activation zone. At this time, the steam generator 111 in the activator supply mechanism 11 is activated. The steam enters the diversion pipe 114 through the first gas supply pipe 112 and the second gas supply pipe 113, and is then evenly sprayed into the activation zone through multiple atomizing nozzles 116 on the gas distribution pipe 115.The atomizing nozzle 116 rotates with the rotary kiln body 1, ensuring that the activator water vapor is evenly distributed throughout the activation zone. Combined with the tumbling action of the first spiral plate 51 and the material-feeding teeth 54, this allows most of the material to fully contact the activator, achieving uniform activation. This optimizes the pore structure of the finished activated carbon, improving its adsorption performance. The processed activated carbon is discharged through the discharge pipe 10, completing the entire firing process and significantly improving production efficiency. Simultaneously, it solves problems such as material agglomeration, uneven heating, insufficient activation, and inaccurate temperature control found in existing equipment. This ensures that the mechanical strength, pore distribution uniformity, and adsorption performance of the finished activated carbon meet standards, reducing the rate of defective products and meeting the production requirements of high-quality hard activated carbon.

Claims

1. A high-temperature calcination processing device for hard activated carbon, characterized in that, The rotary kiln body (1) includes a support plate (2) on its lower side, mounting brackets (3) fixedly connected to both sides of the top of the support plate (2), a heating mechanism (4) on the rotary kiln body (1), a drive motor (6) fixedly connected to one side of the support plate (2), a first transmission mechanism (7) on one side of the drive motor (6), a conveying mechanism (5) inside the rotary kiln body (1), a heating mechanism (4) including a resistance wire (41) fixedly connected to the right side cavity of the rotary kiln body (1), and a natural gas low-NOx burner (42) in the middle of the rotary kiln body (1). An electric heating tube (43) is fixedly connected to the left cavity of the rotary kiln body (1). The conveying mechanism (5) includes a first spiral plate (51), which is rotatably connected to the left side of the rotary kiln body (1). A second spiral plate (52) is fixedly connected to one side of the first spiral plate (51). A third spiral plate (53) is fixedly connected to the side of the second spiral plate (52) away from the first spiral plate (51). The first spiral plate (51) is located at the resistance wire (41). The drive motor (6) is connected to the conveying mechanism (5) through a first transmission mechanism (7). A second transmission mechanism (8) is provided on the other side of the drive motor (6).

2. The high-temperature calcination processing equipment for hard activated carbon according to claim 1, characterized in that, The mounting bracket (3) is fixedly connected to a first docking plate (31) on one side and to a second docking plate (32) on the other side. The feed pipe (9) is fixedly connected to one side of the first docking plate (31), and the rotary kiln body (1) is rotatably connected between the first docking plate (31) and the second docking plate (32).

3. The high-temperature calcination processing equipment for hard activated carbon according to claim 1, characterized in that, The rotary kiln body (1) is rotatably connected between the two mounting brackets (3) via the second transmission mechanism (8). A feed pipe (9) is provided on the right side of the rotary kiln body (1). A discharge pipe (10) is fixedly connected on the side of the rotary kiln body (1) away from the feed pipe (9). An activator supply mechanism (11) is provided on the side of the rotary kiln body (1) away from the drive motor (6).

4. The high-temperature calcination processing equipment for hard activated carbon according to claim 1, characterized in that, An assembly box (421) is fixedly connected to one side of the support plate (2). The natural gas low-NOx burner (42) is fixedly connected to the assembly box (421). A buffer groove (422) is provided on one side of the inside of the assembly box (421). The output nozzle of the natural gas low-NOx burner (42) is fixedly connected to the inside of the buffer groove (422). The natural gas low-NOx burner (42) is installed at an angle, and its output nozzle avoids the direct direction of the rotary kiln body (1). This allows the high-temperature flame to be buffered by the buffer groove (422) and then indirectly act on the external heating surface of the rotary kiln body (1).

5. The high-temperature calcination processing equipment for hard activated carbon according to claim 1, characterized in that, The second spiral plate (52) is located at the natural gas low-NOx burner (42), and the third spiral plate (53) is located at the electric heating tube (43). The outer surfaces of the first spiral plate (51), the second spiral plate (52), and the third spiral plate (53) are all fixedly connected with feeding teeth (54).

6. The high-temperature calcination processing equipment for hard activated carbon according to claim 5, characterized in that, The first transmission mechanism (7) includes an active synchronous pulley (71), which is fixedly connected to the output shaft of the drive motor (6). The active synchronous pulley (71) is connected to a driven synchronous pulley (73) via a synchronous belt (72). A rotating rod (76) is fixedly connected to one side of the driven synchronous pulley (73). The first spiral plate (51), the second spiral plate (52), and the third spiral plate (53) are all fixedly connected to the rotating rod (76).

7. The high-temperature calcination processing equipment for hard activated carbon according to claim 6, characterized in that, The mounting bracket (3) has a bracket (74) fixedly connected to both sides of one end. A tension wheel (75) is rotatably connected to one side of the bracket (74). One side of the tension wheel (75) is in contact with one side of the timing belt (72).

8. The high-temperature calcination processing equipment for hard activated carbon according to claim 1, characterized in that, The second transmission mechanism (8) includes a first shaft (81), which is fixedly connected to the side of the output shaft of the drive motor (6) near the active synchronous wheel (71). A first bevel gear (82) is fixedly connected to one side of the first shaft (81), and a second bevel gear (84) is meshed with one side of the first bevel gear (82). A second shaft (83) is fixedly connected to one side of the second bevel gear (84), and a third bevel gear (85) is fixedly connected to the side of the second bevel gear (84) away from the first bevel gear (82). A third shaft (86) is fixedly connected to one side of the third bevel gear (85). The first shaft (81), the second shaft (83), and the third shaft (86) are all rotatably connected to the support plate (2) through a bearing seat (89).

9. The high-temperature calcination processing equipment for hard activated carbon according to claim 8, characterized in that, The third shaft (86) is fixedly connected to a drive gear (87) on the side away from the third bevel gear (85). A driven gear (88) is meshed with one side of the drive gear (87). The driven gear (88) is fixedly connected to one side of the rotary kiln body (1). The external meshing structure of the drive gear (87) and the driven gear (88) constitutes a reverse transmission assembly. Combined with the synchronous belt (72) of the first transmission mechanism (7) and its same-direction transmission characteristics, the rotation direction of the rotary kiln body (1) driven by the same drive motor (6) is set opposite to the rotation direction of the conveying mechanism (5).

10. The high-temperature calcination processing equipment for hard activated carbon according to claim 2, characterized in that, The activator supply mechanism (11) includes a steam generator (111), which is fixedly connected to the side of the mounting bracket (3) away from the feed pipe (9). The output end of the steam generator (111) is fixedly connected to a first air supply pipe (112), and a second air supply pipe (113) is rotatably connected to one side of the first air supply pipe (112). A branch pipe is fixedly connected to the side of the second air supply pipe (113) away from the first air supply pipe (112). (114) The diversion pipe (114) is located inside the rotary kiln body (1) and is fixedly connected to the rotary kiln body (1). Both sides of one end of the diversion pipe (114) are fixedly connected to the gas distribution pipe (115). The gas distribution pipe (115) is fixedly connected inside the rotary kiln body (1) and is located on both sides of the end of the third spiral plate (53). One end of the gas distribution pipe (115) is fixedly connected to the atomizing nozzle (116), and there are multiple atomizing nozzles (116).

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