A high-temperature rotary device for activated carbon activation and regeneration

Abstract

This invention discloses a high-temperature rotary kiln device for activated carbon activation and regeneration, comprising a rotary kiln body, a closed cover on one side of the rotary kiln body, and a mounting frame on the other side of the rotary kiln body. A combustion chamber is disposed within the mounting frame. The rotary kiln body is rotatably positioned between the closed cover and the mounting frame. It also includes a partition ring plate, which divides the interior of the rotary kiln body into a drying zone and a calcination zone. A spiral steam flow structure is disposed between the partition ring plate and the same side of the rotary kiln body. The spiral steam flow structure is located within the drying zone. During the movement of activated carbon within the drying zone, it comes into contact with the spiral steam flow structure, thus drying the activated carbon. This invention addresses the problem in existing rotary kiln devices where the long movement path of activated carbon during activation and regeneration easily leads to heat waste within the rotary kiln device.

Description

Technical Field

[0001] This invention relates to the field of activated carbon activation technology, and specifically to a high-temperature rotary device for activated carbon activation and regeneration. Background Technology

[0002] Activated carbon is a molecularly separated structure widely used in existing technologies for industrial wastewater treatment, waste gas treatment, drinking water purification, object decolorization, and solvent recovery. Activated carbon relies on its rich pore structure and huge specific surface area to achieve physical or chemical adsorption. However, after long-term use, the internal pores of activated carbon will be filled and blocked by adsorbates such as organic matter, colloids, oils, inorganic salts, or particulate matter, and the adsorption capacity will continue to decline until it becomes ineffective, thus forming saturated waste activated carbon.

[0003] Activated carbon activation and regeneration is a technology that removes and decomposes adsorbates in the pores by using physical, chemical, and thermal processes while preserving the carbon matrix framework to the greatest extent possible. This restores the pore structure and adsorption performance, enabling reuse. The most common activation and regeneration method for activated carbon in existing technologies is through thermal regeneration.

[0004] In practical applications, the commonly used thermal regeneration technology utilizes a rotary kiln as the primary equipment for activating and regenerating activated carbon. First, while high-temperature gas flows through the rotary kiln, the activated carbon requiring high-temperature calcination enters from the side furthest from the combustion chamber. The activated carbon moves towards the combustion chamber from this side, undergoing initial drying. Free water and organic solvents within the activated carbon are vaporized and expelled with the high-temperature gas. The activated carbon is then continued towards the combustion chamber, where the organic adsorbates within the pores undergo thermal decomposition under high temperature and oxygen-deficient conditions. Long-chain organic compounds break down into small-molecule combustible gases, achieving volatilization of the adsorbates within the activated carbon pores. For further deep activation, high-temperature superheated steam can be used for deep contact with the activated carbon. This process converts residual carbon within the pores into gas and removes it. Furthermore, the steam can repair the activated carbon pores, optimize pore size distribution, and improve the activation recovery rate.

[0005] Existing rotary kiln devices require a basic drying zone and a high-temperature calcination zone during operation. However, steam activation is equally important. Adding a drying zone, a high-temperature calcination zone, and a steam activation zone would increase the overall length of the rotary kiln device, and an additional heating system would be needed for the steam. Therefore, in actual use, the drying zone, the high-temperature calcination zone, and the steam activation zone all need to be raised to a sufficient temperature. Furthermore, because the three zones are independent of each other, the movement of activated carbon between the three zones also takes time. As a result, heat waste is easily encountered in the operation of existing rotary kiln devices. Summary of the Invention

[0006] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a high-temperature rotary device for activated carbon activation and regeneration, thereby solving the problem mentioned in the background art where the activated carbon has a long movement path during the activation and regeneration process, which easily leads to heat waste within the rotary furnace.

[0007] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a high-temperature rotary device for activated carbon activation and regeneration, comprising a rotary furnace body, a closed cover on one side of the rotary furnace body, and a mounting frame on the other side of the rotary furnace body, wherein a combustion chamber is disposed within the mounting frame, and the rotary furnace body is rotatably disposed between the closed cover and the mounting frame, and further comprising: A partition ring plate is provided inside the rotary kiln body, which divides the interior of the rotary kiln body into a drying area and a calcination area. A spiral steam flow structure is provided between the partition ring plate and the same side of the rotary kiln body. The spiral steam flow structure is located in the drying area. During the movement of activated carbon in the drying area, it comes into contact with the spiral steam flow structure to dry the activated carbon. The discharge heat exchange structure is provided at the bottom of the mounting frame. The calcined activated carbon is discharged into the discharge heat exchange structure through the mounting frame to perform preliminary cooling and heat exchange for the activated carbon. The bottom of the rotary kiln body is also provided with a conveying heat exchange structure to drive the activated carbon to move towards the closed cover. A steam activation support cylinder is provided in the drying area. The steam activation support cylinder is connected to the spiral steam flow structure, and the activated carbon is transported into the steam activation support cylinder for further activation.

[0008] A spiral scraper is provided between the partition ring plate and the inner side wall of the rotary furnace body. The spiral scraper is located in the calcination area. A mounting box is provided at the bottom of the rotary furnace body. A rotation drive device for driving the rotary furnace body to rotate is provided on the mounting box.

[0009] A heating ring cylinder is rotatably sleeved on the outer side of the rotary kiln body. The discharge heat exchange structure and the conveying heat exchange structure are both connected to the heating ring cylinder. A fixed ring plate is rotatably arranged on the inner arc surface of the heating ring cylinder. The fixed ring plate is connected to the outer wall of the rotary kiln body. An air injection cavity is provided inside the partition ring plate. An air injection interface is connected between the air injection cavity and the fixed ring plate.

[0010] The spiral steam flow structure includes a spiral gas delivery pipe and gas injection branch pipes. The spiral gas delivery pipe is disposed between the partition ring plate and the rotary kiln body. The spiral gas delivery pipe is connected to the gas injection cavity. Multiple gas injection branch pipes are connected to the inner arc surface of the spiral gas delivery pipe. The gas injection branch pipes are connected to the steam activation support cylinder.

[0011] The discharge heat exchange structure includes a discharge cylinder seat and a heat exchange chamber. The discharge cylinder seat is connected between the mounting support frame and the mounting chamber. The activated carbon calcined in the rotary furnace body enters the mounting chamber through the discharge cylinder seat. The heat exchange chamber is sleeved on the outside of the discharge cylinder seat. Two heat exchange chambers are formed inside the heat exchange chamber. Multiple heat exchange fins are arranged between the heat exchange chambers and the discharge cylinder seat.

[0012] The heat exchange structure includes a plate conveying structure and a plate support cylinder. The plate conveying structure is circulated and driven within the mounting box. The plate support cylinder is also located within the mounting box. The plate conveying structure is driven by the plate support cylinder. Activated carbon moves on the plate support cylinder. A water heating device is installed on the plate support cylinder.

[0013] Both the heat exchange chamber and the plate support cylinder are connected to the heating ring cylinder by gas supply pipes, and both the heat exchange chamber and the plate support cylinder are connected to water injection valve pipes.

[0014] The side of the steam activation support cylinder closest to the combustion chamber is tapered, and a conveying cylinder seat is provided inside the steam activation support cylinder, the conveying cylinder seat penetrating the closed cover.

[0015] One side of the mounting housing is connected to a conveying support cylinder, and a spiral conveying structure is provided inside the conveying support cylinder. The top of the conveying support cylinder is connected to the conveying cylinder base.

[0016] A return material interlayer is formed between the outer arc surface of the conveying cylinder seat and the steam activation support cylinder. A spiral conveying shaft is rotatably connected inside the conveying cylinder seat. A spiral conveying scraper is rotatably arranged inside the return material interlayer. A connecting scraper frame is provided between the spiral conveying shaft and the spiral conveying scraper on the same side. During the rotation of the spiral conveying shaft, the spiral conveying scraper is driven to rotate inside the return material interlayer.

[0017] (III) Beneficial Effects Compared with the prior art, the present invention provides a high-temperature rotary device for activated carbon activation and regeneration, which has the following beneficial effects: 1. In this invention, when a high-temperature activation process is required for activated carbon, the activated carbon is first added to the drying area inside the rotary kiln body through a sealed cover. Then, as the rotary kiln body rotates, it moves the activated carbon towards the calcination area. During this movement, the activated carbon comes into contact with the spiral gas conveying pipe and multiple gas injection branch pipes in the drying area. The spiral gas conveying pipe not only helps the activated carbon move towards the calcination area, but also allows high-temperature steam to flow through it. When the outer walls of the spiral gas conveying pipe and multiple gas injection branch pipes come into contact with the activated carbon, they effectively assist the high-temperature gas inside the rotary kiln body in further drying the activated carbon. The invention also utilizes the heat from the spiral steam flow structure and the steam activation branch cylinder to dry the activated carbon.

[0018] 2. In this invention, after the activated carbon is calcined and during the discharge process, a discharge heat exchange structure is used to reduce the temperature of the activated carbon as it moves out of the rotary kiln body, and to vaporize the water within the discharge heat exchange structure, thus producing steam for subsequent steam activation. Similarly, during the transport of the activated carbon from the mounting box, a transport heat exchange structure is used to reduce the temperature of the activated carbon and produce steam. This steam is then transported to a heating ring cylinder for further heating, producing superheated steam, which is then transported to the steam activation support cylinder for steam activation of the activated carbon. Therefore, in actual use, this invention can utilize the calcination heat of the activated carbon itself to produce the steam required for subsequent activation.

[0019] 3. In the steam activation process of activated carbon, the activated carbon is conveyed to the inside of the steam activation support through the conveying cylinder seat. During the conveying process, the activated carbon is naturally transferred into the return material jacket. During the conveying process of the activated carbon to the outside of the steam activation support, the steam activation process of activated carbon can be completed, which effectively improves the convenience of steam activation of activated carbon. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a high-temperature rotary device for activated carbon activation and regeneration disclosed in this application; Figure 2 For this application Figure 1A schematic diagram of a partial cross-section of the main body of the intermediate rotary kiln; Figure 3 For this application Figure 1 A partial cross-sectional structural diagram showing the assembly of the rotary kiln body, steam activation support cylinder, heating ring cylinder, and partition ring plate; Figure 4 For this application Figure 1 A schematic diagram of the structure of the heating ring cylinder, the partition ring plate and the spiral gas delivery pipe; Figure 5 For this application Figure 1 A partial cross-sectional structural diagram of the central discharge cylinder seat, heat exchanger box, heat exchange chamber, and heat exchange fins. Figure 6 For this application Figure 1 A partial sectional view of the structure showing the installation of the chassis, plate conveyor structure, plate support cylinder base and water heating equipment. Figure 7 For this application Figure 1 A partial cross-sectional structural diagram showing the coordination of the central conveyor cylinder base, return material interlayer, screw conveyor shaft, screw conveyor scraper, and connecting scraper frame.

[0021] In the diagram: 1. Rotary furnace body; 2. Enclosed cover; 3. Mounting support frame; 4. Combustion chamber; 5. Isolation ring plate; 6. Drying area; 7. Calcination area; 8. Steam activation support cylinder; 9. Spiral scraper; 10. Mounting housing; 11. Rotary drive equipment; 12. Feeding hopper; 101. Heating ring cylinder; 102. Fixed ring plate; 103. Gas injection cavity; 104. Gas injection port; 201. Spiral gas delivery pipe; 202. Gas injection branch pipe; 301. Discharge cylinder seat; 302. Heat exchanger box; 303. Heat exchanger chamber; 304. Heat exchanger fins; 401. Plate conveyor structure; 402. Plate support cylinder base; 403. Water heating equipment; 501. Gas transmission pipeline; 502. Water injection valve pipe; 601. Conveyor cylinder base; 602. Conveyor support cylinder; 603. Screw conveyor structure; 604. Return material interlayer; 605. Screw conveyor shaft; 606. Screw conveyor scraper; 607. Connecting scraper frame; 611. Motor drive equipment; 612. Transmission wheel; 613. Transmission belt; 614. Protective housing; 615. Material conveying valve pipe. Detailed Implementation

[0022] 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.

[0023] Please refer to a high-temperature rotary device for activated carbon activation and regeneration. Figure 1 The apparatus includes a rotary kiln body 1, which is a rotary kiln device known to those skilled in the art, and has functions such as drying and high-temperature calcination of activated carbon. One side of the rotary kiln body 1 has a sealing cover 2, which supports one side of the rotary kiln body 1 and prevents the activated carbon from shifting back, ensuring stable feeding of activated carbon. A feeding hopper 12 is provided on the sealing cover 2. A dedicated conveying device works in conjunction with the feeding hopper 12. After the conveying device (e.g., an elevator) transports the activated carbon into the feeding hopper 12, the activated carbon falls into the rotary kiln body 1.

[0024] A mounting frame 3 is provided on the other side of the rotary kiln body 1. Please refer to [link / reference]. Figure 2 The mounting frame 3 contains a combustion chamber 4. The rotary kiln body 1 is rotatably positioned between the closed cover 2 and the mounting frame 3. The heat inside the rotary kiln body 1 comes from the complete combustion of fuel in the combustion chamber 4. The high-temperature gas generated during the fuel combustion process is transported to the rotary kiln body 1 to calcine or dry the activated carbon moving inside the rotary kiln body 1. The mounting frame 3 is used to support and install one side of the rotary kiln body 1 and the combustion chamber 4.

[0025] It also includes partition ring plate 5, please refer to Figure 2 The rotary kiln body 1 is equipped with a partition ring plate 5, which divides the interior of the rotary kiln body 1 into a drying zone 6 and a calcination zone 7. The calcination zone 7 is located on the side of the rotary kiln body 1 closest to the combustion chamber 4, and the drying zone 6 is located on the side of the rotary kiln body 1 closest to the closed cover 2. This achieves the purpose of drying the activated carbon first and then calcining it during the process of the activated carbon moving from the rotary kiln body 1.

[0026] A spiral scraper 9 is provided between the partition ring plate 5 and the inner wall of the rotary kiln body 1. Please refer to [link / reference]. Figure 3The spiral scraper 9 is located within the calcination zone 7. To facilitate the movement of activated carbon within the rotary kiln body 1, the rotary kiln body 1 is tilted, allowing the activated carbon to move towards the combustion chamber 4 under gravity. Simultaneously, the spiral scraper 9, following the rotation of the rotary kiln body 1, pushes the activated carbon into the calcination zone 7. A mounting housing 10 is located at the bottom of the rotary kiln body 1, and a rotation drive device 11 is installed on the mounting housing 10 to drive the rotation of the rotary kiln body 1. After calcination and cooling, the activated carbon enters the mounting housing 10 and then moves back towards the closed cover 2 within the mounting housing 10. The rotation drive device 11 is an essential drive device in existing rotary kiln devices. By driving the cylindrical furnace body 1 to rotate, the activated carbon is heated more evenly while moving within the rotary kiln body 1.

[0027] A heating ring cylinder 101 is rotatably sleeved on the outer side of the rotary kiln body 1. Please refer to [link / reference]. Figure 4 Both the discharge heat exchange structure and the conveying heat exchange structure are connected to the heating ring cylinder 101. When using steam to contact the pores of activated carbon, in order to avoid the generation of condensate in the pores of activated carbon and the resulting agglomeration of activated carbon, the steam is further heated after being conveyed into the heating ring cylinder 101 to remove excess water vapor. Multiple electric heating devices are arranged around the circumference of the heating ring cylinder 101 to heat the steam entering the heating ring cylinder 101. Furthermore, a fixed ring plate 102 is rotatably mounted on the inner arc surface of the heating ring cylinder 101. The fixed ring plate 102 is connected to the outer wall of the rotary kiln body 1. A gas injection cavity 103 is provided inside the partition ring plate 5. A gas injection port 104 is connected between the gas injection cavity 103 and the fixed ring plate 102. Since the rotary kiln body 1, the partition ring plate 5, and the gas injection port 104 all move circumferentially during use, but the heating ring cylinder 101 does not rotate, in order to maintain the mutual cooperation between the rotary kiln body 1, the partition ring plate 5, and the gas injection port 104 and the heating ring cylinder 101 during rotation, so that steam can be transported into the gas injection cavity 103 through the gas injection port 104, the fixed ring plate 102 will rotate with the rotary kiln body 1, while the heating ring cylinder 101 remains stationary and steadily injects steam into the gas injection port 104.

[0028] A spiral steam flow structure is provided between the partition ring plate 5 and the rotary kiln body 1 on the same side. The spiral steam flow structure is located in the drying zone 6. During the movement of activated carbon in the drying zone 6, it comes into contact with the spiral steam flow structure to dry the activated carbon. The spiral steam flow structure includes a spiral gas conveying pipe 201 and a gas injection branch pipe 202. The spiral gas conveying pipe 201 is located between the partition ring plate 5 and the rotary kiln body 1. The spiral gas conveying pipe 201 is connected to the gas injection cavity 103. Multiple gas injection branch pipes 202 are connected to the inner arc surface of the spiral gas conveying pipe 201. The gas injection branch pipes 202 are connected to the steam activation support cylinder 8. When steam enters the inside of the gas injection cavity 103 through the gas injection port 104, the steam is then injected into the spiral gas conveying pipe 201 through the gas injection cavity 103. Finally, the steam is transported to the steam activation support cylinder 8 through the gas injection branch pipe 202. As the spiral gas conveying pipe 201 rotates with the rotary kiln body 1, it pushes the activated carbon to move within the rotary kiln body 1. When steam flows within the spiral gas conveying pipe 201, the gas injection branch pipe 202, and the steam activation support cylinder 8, it raises the surface temperature of the spiral gas conveying pipe 201, the gas injection branch pipe 202, and the steam activation support cylinder 8, further increasing the internal temperature of the drying zone 6. When the activated carbon comes into contact with the spiral gas conveying pipe 201, the gas injection branch pipe 202, and the steam activation support cylinder 8, it assists in the drying of the activated carbon.

[0029] The bottom of the mounting frame 3 is equipped with a discharge heat exchange structure; please refer to [link / reference]. Figure 5 The calcined activated carbon is discharged into the discharge heat exchange structure through the mounting frame 3 for initial cooling and heat exchange. The discharge heat exchange structure includes a discharge cylinder seat 301 and a heat exchange chamber 302. The discharge cylinder seat 301 connects the mounting frame 3 and the mounting chamber 10. The calcined activated carbon in the rotary kiln body 1 enters the mounting chamber 10 through the discharge cylinder seat 301. The heat exchange chamber 302 is fitted outside the discharge cylinder seat 301. Two heat exchange chambers 303 are formed inside the heat exchange chamber 302. Multiple heat exchange fins 304 are arranged between the heat exchange chambers 303 and the discharge cylinder seat 301. The activated carbon, which has just undergone high-temperature calcination, is then cooled and heated. When the burned activated carbon moves downward from the discharge cylinder seat 301, it contains a lot of heat. In order to cool down the activated carbon, water is injected into the heat exchange chamber 303 to create a low-temperature discharge space in the discharge cylinder seat 301. When the activated carbon moves in the discharge cylinder seat 301, it exchanges heat with the inside of the heat exchange chamber 303 by contacting the heat exchange fins 304, thereby reducing the temperature of the activated carbon. Similarly, the heat transferred from the heat exchange fins 304 to the heat exchange chamber 303 will also vaporize the water in the heat exchange chamber 303 to form steam, which is then transported to the heating ring cylinder 101.

[0030] The bottom of the rotary kiln body 1 is also equipped with a conveying heat exchange structure, please refer to [link / reference]. Figure 6The activated carbon is moved towards the closed cover 2. The heat exchange structure includes a plate conveying structure 401 and a plate support cylinder seat 402. The plate conveying structure 401 is circulated and driven within the mounting housing 10. The plate support cylinder seat 402 is also located within the mounting housing 10. The plate conveying structure 401 is driven by the plate support cylinder seat 402. The activated carbon moves on the plate support cylinder seat 402. A water heating device 403 is installed on the plate support cylinder seat 402. The plate conveying structure 401 includes a chain drive device. Multiple conveying scrapers are circulated and driven on the chain drive device. The side of the mounting housing 10 does not directly contact the activated carbon. The chain drive can drive multiple conveying scrapers to circulate, causing the activated carbon to move at the top of the plate support cylinder 402. Water is also injected into the plate support cylinder 402, and the activated carbon exchanges heat with the top of the plate support cylinder 402, further reducing the temperature of the activated carbon. This also heats the internal temperature of the plate support cylinder 402, saving energy consumption of the water heating device 403. Then, the water heating device 403 heats the inside of the plate support cylinder 402 to produce steam, which is then transported to the heating ring cylinder 101 for use in the subsequent steam activation process.

[0031] Both the heat exchange chamber 303 and the plate support cylinder 402 are connected to the heating ring cylinder 101 by a gas supply pipe 501. The steam generated in the heat exchange chamber 303 and the plate support cylinder 402 is transported to the heating ring cylinder 101 through the gas supply pipe 501. Both the heat exchange chamber 303 and the plate support cylinder 402 are connected to a water injection valve pipe 502. When it is necessary to add water to the heat exchange chamber 303 and the plate support cylinder 402, an external water source pipe is connected to the water injection valve pipe 502, the valve on the water injection valve pipe 502 is opened, and water is injected into the heat exchange chamber 303 and the plate support cylinder 402.

[0032] The drying zone 6 is equipped with a steam activation support cylinder 8. Please refer to [link / reference]. Figure 7 The steam activation support cylinder 8 is connected to the spiral steam flow structure, which transports activated carbon into the steam activation support cylinder 8 for further activation. The side of the steam activation support cylinder 8 near the combustion chamber 4 is set as a cone. A conveying cylinder seat 601 is set inside the steam activation support cylinder 8. The conveying cylinder seat 601 passes through the closed cover 2. When the activated carbon needs to be activated, the activated carbon is transported into the conveying cylinder seat 601, and then the activated carbon moves in the conveying cylinder seat 601 so that the steam comes into contact with the activated carbon and optimizes the pore structure of the activated carbon. Because one side of the steam activation support cylinder 8 is set as a cone, the activated carbon will always enter the return material jacket 604 when the steam activation support cylinder 8 rotates with the rotary kiln body 1.

[0033] A conveying support cylinder 602 is connected to one side of the mounting housing 10. A spiral conveying structure 603 is installed inside the conveying support cylinder 602. The top of the conveying support cylinder 602 is connected to the conveying cylinder seat 601. Activated carbon discharged from the mounting housing 10 enters the bottom of the conveying support cylinder 602. Then, under the action of the spiral conveying structure 603, the activated carbon is driven to rise in the conveying support cylinder 602, moving the activated carbon to the top of the conveying support cylinder 602, and then conveying the activated carbon into the conveying cylinder seat 601.

[0034] A return material jacket 604 is formed between the outer arc surface of the conveying cylinder seat 601 and the steam activation support cylinder 8. A screw conveying shaft 605 is rotatably connected inside the conveying cylinder seat 601. A motor drive device 611 is provided on the outside of the closed cover 2. Both the output end of the motor drive device 611 and the screw conveying shaft 605 are provided on the outer area of ​​the rotary kiln body 1. A transmission belt 613 is connected between the two transmission wheels 612. A protective housing 614 is provided on the closed cover 2 to protect the transmission wheels 612 and the transmission belt 613. When the motor drive device 611 is started, the screw conveying shaft 605 is driven to rotate inside the conveying cylinder seat 601 through the transmission engagement of the transmission wheels 612 and the transmission belt 613, thereby moving the activated carbon inside the conveying cylinder seat 601.

[0035] A spiral conveying scraper 606 is rotatably mounted within the return material interlayer 604. A connecting scraper frame 607 is positioned between the spiral conveying shaft 605 and the spiral conveying scraper 606 on the same side. During the rotation of the spiral conveying shaft 605, the spiral conveying scraper 606 rotates within the return material interlayer 604. When the connecting scraper frame 607 rotates along the center point of the spiral conveying shaft 605, it causes the spiral conveying scraper 606 to rotate coaxially with the spiral conveying shaft 605, thus allowing the activated carbon to interact with the spiral conveying scraper. When the rotary conveyor scraper 606 contacts the activated carbon, the activated carbon moves within the return material jacket 604. While ensuring steam activation, the activated carbon is conveyed to the side near the closed cover 2. The return material jacket 604 is connected to a conveying valve pipe 615 that discharges the activated carbon outward to the rotary kiln body 1. The activated carbon is discharged through the conveying valve pipe 615. The side of the return material jacket 604 near the closed cover 2 is provided with a permeable layer, so that the activated steam is discharged along with the gas inside the rotary kiln body 1 through its own exhaust structure.

[0036] When the activated carbon activation and regeneration process is required, the high-temperature rotary device for activated carbon activation and regeneration transports the activated carbon to the drying zone 6 within the rotary kiln body 1. Then, it drives the kiln body 1 to rotate. Under the action of the spiral gas conveying pipe 201 and the spiral scraper 9, the activated carbon is moved into the calcination zone 7. Steam is injected into the heating ring cylinder 101. After the steam is further heated, it is injected into the gas injection cavity 103. The steam is then injected into the spiral gas conveying pipe 201 through the gas injection cavity 103. Finally, the steam is transported to the steam activation support cylinder 8 through the gas injection branch pipe 202. As the spiral gas conveying pipe 201 rotates with the rotary kiln body 1, it pushes the activated carbon to move within the rotary kiln body 1. When steam flows within the spiral gas conveying pipe 201, the gas injection branch pipe 202, and the steam activation support cylinder 8, it raises the surface temperature of the spiral gas conveying pipe 201, the gas injection branch pipe 202, and the steam activation support cylinder 8, further increasing the internal temperature of the drying zone 6. When the activated carbon comes into contact with the spiral gas conveying pipe 201, the gas injection branch pipe 202, and the steam activation support cylinder 8, it assists in the drying of the activated carbon.

[0037] After being calcined in calcination zone 7, the activated carbon eventually moves into the mounting housing 10 via discharge cylinder seat 301. As the activated carbon moves downward from discharge cylinder seat 301, it exchanges heat with heat exchange chamber 303, reducing the surface temperature of the activated carbon and generating steam in heat exchange chamber 303. After cooling, the activated carbon enters the mounting housing 10 and moves to the top of plate support cylinder seat 402 under the action of plate conveying structure 401, further exchanging heat with water in plate support cylinder seat 402, reducing the temperature of the activated carbon and generating steam in plate support cylinder seat 402. The cooled activated carbon then enters the conveying support cylinder 602, where it is driven upward by screw conveying structure 603, moving to the top of conveying support cylinder 602 and then being conveyed into conveying cylinder seat 601.

[0038] After being heated by the heating ring cylinder 101, the steam is injected into the steam activation support cylinder 8 through the spiral gas conveying pipe 201 and the gas injection branch pipe 202, where it contacts and activates the activated carbon inside the steam activation support cylinder 8. During the rotation of the spiral conveying shaft 605, the spiral conveying scraper 606 rotates within the return material jacket 604. When the connecting scraper frame 607 rotates along the center point of the spiral conveying shaft 605, it causes the connecting scraper frame 607 to drive the spiral conveying scraper 606 to rotate coaxially along the spiral conveying shaft 605, thus activating the activated carbon. Contacting the screw conveyor scraper 606, the activated carbon moves within the return material jacket 604, ensuring steam activation and conveying the activated carbon to the side near the closed cover 2. The return material jacket 604 is connected to a conveying valve pipe 615 that discharges the activated carbon outward to the rotary kiln body 1. The activated carbon is discharged through the conveying valve pipe 615. The side of the return material jacket 604 near the closed cover 2 is provided with a permeable layer, allowing the activated steam to be discharged along with the gas inside the rotary kiln body 1 through its own exhaust structure.

[0039] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-temperature rotary device for activated carbon activation and regeneration, comprising a rotary furnace body (1), a closed cover (2) on one side of the rotary furnace body (1), and a mounting frame (3) on the other side of the rotary furnace body (1), wherein a combustion chamber (4) is disposed within the mounting frame (3), and the rotary furnace body (1) is rotatably disposed between the closed cover (2) and the mounting frame (3), characterized in that, Also includes: The partition ring plate (5) is provided inside the rotary kiln body (1). The partition ring plate (5) divides the interior of the rotary kiln body (1) into a drying area (6) and a calcination area (7). A spiral steam flow structure is provided between the partition ring plate (5) and the same side of the rotary kiln body (1). The spiral steam flow structure is located in the drying area (6). During the movement of activated carbon in the drying area (6), it comes into contact with the spiral steam flow structure to dry the activated carbon. The discharge heat exchange structure is provided at the bottom of the mounting frame (3). The calcined activated carbon is discharged into the discharge heat exchange structure through the mounting frame (3) to preliminarily cool and exchange heat for the activated carbon. The bottom of the rotary kiln body (1) is also provided with a conveying heat exchange structure to drive the activated carbon to move towards the closed cover (2). Steam activation cylinder (8) is provided in the drying area (6). The steam activation cylinder (8) is connected to the spiral steam flow structure to transport activated carbon into the steam activation cylinder (8) for further activation.

2. The high-temperature rotary device for activated carbon activation and regeneration according to claim 1, characterized in that, A spiral scraper (9) is provided between the partition ring plate (5) and the inner wall of the rotary furnace body (1). The spiral scraper (9) is located in the calcination zone (7). A mounting box (10) is provided at the bottom of the rotary furnace body (1). A rotation drive device (11) that drives the rotary furnace body (1) to rotate is provided on the mounting box (10).

3. The high-temperature rotary device for activated carbon activation and regeneration according to claim 2, characterized in that, A heating ring cylinder (101) is rotatably sleeved on the outer side of the rotary kiln body (1). The discharge heat exchange structure and the conveying heat exchange structure are both connected to the heating ring cylinder (101). A fixed ring plate (102) is rotatably arranged on the inner arc surface of the heating ring cylinder (101). The fixed ring plate (102) is connected to the outer wall of the rotary kiln body (1). A gas injection cavity (103) is provided in the partition ring plate (5). A gas injection interface (104) is connected between the gas injection cavity (103) and the fixed ring plate (102).

4. The high-temperature rotary device for activated carbon activation and regeneration according to claim 3, characterized in that, The spiral steam flow structure includes: A spiral gas conveying pipe (201) is disposed between the partition ring plate (5) and the rotary kiln body (1), and the spiral gas conveying pipe (201) is connected to the gas injection cavity (103); Gas injection branch pipe (202), multiple gas injection branch pipes (202) are connected to the inner arc surface of the spiral gas delivery pipe (201), and the gas injection branch pipe (202) is connected to the steam activation support cylinder (8).

5. The high-temperature rotary device for activated carbon activation and regeneration according to claim 4, characterized in that, The discharge heat exchange structure includes: The discharge cylinder seat (301) is connected between the mounting support frame (3) and the mounting box (10). The activated carbon calcined in the rotary kiln body (1) enters the mounting box (10) through the discharge cylinder seat (301). A heat exchanger box (302) is sleeved on the outside of the discharge cylinder seat (301). Two heat exchange chambers (303) are formed inside the heat exchanger box (302). Multiple heat exchange fins (304) are provided between the heat exchange chambers (303) and the discharge cylinder seat (301).

6. The high-temperature rotary device for activated carbon activation and regeneration according to claim 5, characterized in that, The heat exchange structure includes: A plate conveyor structure (401) is provided in the mounting housing (10) for cyclic transmission. A plate-type support cylinder seat (402) is installed inside the mounting box (10). The plate-type conveying structure (401) is driven on the plate-type support cylinder seat (402). Activated carbon moves on the plate-type support cylinder seat (402). A water heating device (403) is installed on the plate-type support cylinder seat (402).

7. The high-temperature rotary device for activated carbon activation and regeneration according to claim 6, characterized in that, The heat exchange chamber (303) and the plate support cylinder seat (402) are connected to the heating ring cylinder (101) by a gas supply pipeline (501), and the heat exchange chamber (303) and the plate support cylinder seat (402) are connected to a water injection valve pipe (502).

8. The high-temperature rotary device for activated carbon activation and regeneration according to claim 6, characterized in that, The side of the steam activation support cylinder (8) near the combustion chamber (4) is cone-shaped, and a conveying cylinder seat (601) is provided inside the steam activation support cylinder (8), which penetrates the closed cover (2).

9. The high-temperature rotary device for activated carbon activation and regeneration according to claim 8, characterized in that, One side of the mounting housing (10) is connected to a conveying support cylinder (602), and a spiral conveying structure (603) is provided inside the conveying support cylinder (602). The top of the conveying support cylinder (602) is connected to the conveying cylinder seat (601).

10. A high-temperature rotary device for activated carbon activation and regeneration according to claim 9, characterized in that, A return material jacket (604) is formed between the outer arc surface of the conveying cylinder seat (601) and the steam activation support cylinder (8). A spiral conveying shaft (605) is rotatably connected inside the conveying cylinder seat (601). A spiral conveying scraper (606) is rotatably arranged inside the return material jacket (604). A connecting scraper frame (607) is provided between the spiral conveying shaft (605) and the spiral conveying scraper (606) on the same side. During the rotation of the spiral conveying shaft (605), the spiral conveying scraper (606) is driven to rotate inside the return material jacket (604).

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