A porous carbon activation device and a porous carbon preparation process

Abstract

This invention discloses a porous carbon activation device and a porous carbon preparation process, relating to the field of porous carbon production technology. One end of the activation reaction furnace tube is the furnace tube inlet, and the other end is the furnace tube outlet. Process gas is introduced into the furnace tube outlet and flows along the inside of the activation reaction furnace tube in the opposite direction to the flow of materials inside the activation reaction furnace tube. The material recovery and circulation mechanism is provided with a recovery chamber connected to the furnace tube inlet. The top of the recovery chamber is connected to a tail gas discharge channel, and a filter assembly is provided in the tail gas discharge channel. A material conveying mechanism is provided in the recovery chamber. The material conveying mechanism is located below the filter assembly, and its top has a receiving part for receiving the material falling from the filter assembly. The outlet of the material conveying mechanism extends into the activation reaction furnace tube. This can solve the problem of material loss caused by powder materials with high specific surface area and low bulk density during the gas-participated reaction process, while increasing the effective loading capacity of the equipment and making it easier to achieve industrial mass production.

Description

Technical Field

[0001] This invention relates to the field of porous carbon production technology, and in particular to a porous carbon activation device and a porous carbon preparation process. Background Technology

[0002] Porous carbon materials that have undergone activation and pore-forming processes possess a high specific surface area (up to 3000 m²). 2 With its adjustable pore size distribution (0.5-50nm) and pore structure ratio, coupled with excellent chemical stability, porous carbon materials have become core materials in fields such as new energy, environmental governance, and biomedicine. Especially in the silicon-carbon anode field, which is currently highly favored in the lithium battery industry, the role of porous carbon materials is particularly crucial. Silicon-carbon anodes have very high specific capacity, initial efficiency, and rate performance, but they also have a fatal flaw: silicon can expand in volume by up to 300% during charge and discharge. By uniformly depositing nano-silicon into the pores of porous carbon through vapor deposition, the volume expansion of the material can be significantly reduced.

[0003] For porous carbon materials, the commonly used industrial activation methods are chemical activation and physical activation. Chemical activation technology is mature and can be mass-produced, but it results in a large amount of waste liquid and significant environmental pressure. Material activation is relatively mild, using steam or carbon dioxide to etch and create pores in the carbon substrate at high temperatures. Only carbon monoxide and hydrogen are produced, which can be treated by simple incineration. However, since a large amount of process gas is directly introduced into the reactor tube, it has a serious blowing effect on fine powder materials. This has become a key factor affecting the mass production scale-up of physical activation methods.

[0004] In existing technologies, the following methods are commonly used to reduce material loss:

[0005] 1. Increasing the particle size of the material is an effective method, but the larger the particles, the more difficult it is to ensure the uniformity of activation. In addition, fine powder materials are inevitably generated during the production process, and these materials are still easily blown away when they enter the activation equipment.

[0006] 2. Simply adding metal filter elements or other filtration devices is a temporary solution, not a permanent one. The filtration efficiency of the filter elements will be reduced at high temperatures, leading to overpressure in the equipment during the activation process and making it impossible to guarantee the amount of material loaded.

[0007] 3. Reducing the process gas flow rate will result in insufficient contact between the material and the process gas, poor activation effect, and require a longer reaction time to achieve the required results, which is not conducive to industrial production. Summary of the Invention

[0008] The purpose of this invention is to provide a porous carbon activation device and a porous carbon preparation process to solve the problems existing in the prior art. It can solve the problem of material loss caused by powder materials with high specific surface area and low bulk density during gas-involved reaction, while increasing the effective loading capacity of the device and making it easier to achieve industrial mass production.

[0009] To achieve the above objectives, the present invention provides the following solution: The present invention provides a porous carbon activation device, comprising:

[0010] The activation reaction furnace tube extends horizontally along its axis and is equipped with a furnace tube drive mechanism to drive its rotation. One end of the activation reaction furnace tube is the furnace tube inlet end, and the other end is the furnace tube outlet end. Process gas is introduced into the furnace tube outlet end. The process gas flows along the inside of the activation reaction furnace tube and in the opposite direction to the flow of the material inside the activation reaction furnace tube.

[0011] A material recycling mechanism is provided at the feed end of the furnace tube and has a recycling chamber connected to the feed end of the furnace tube. The top of the recycling chamber is connected to a tail gas discharge channel. A filter assembly is provided in the tail gas discharge channel. A material conveying mechanism is provided in the recycling chamber. The material conveying mechanism is located below the filter assembly and has a receiving part on its top for receiving the material falling from the filter assembly. The feed end of the material conveying mechanism is connected to a feeding mechanism, and the discharge end of the material conveying mechanism extends into the activation reaction furnace tube.

[0012] Optionally, the filter assembly includes a filter element mechanism disposed within the exhaust gas discharge channel and is equipped with a pulse backflushing mechanism.

[0013] Optionally, the filter assembly further includes a settling mechanism disposed below the filter element assembly and having, but not limited to, a grid-like structure, wherein the settling mechanism is equipped with a material discharge drive mechanism.

[0014] Optionally, the material feeding drive mechanism includes, but is not limited to, the pulse backflushing mechanism and the ultrasonic vibration mechanism.

[0015] Optionally, the feeding mechanism includes a feed pipe with a material stepper inside. The discharge end of the feed pipe extends into the activation reactor tube and has a funnel-shaped structure. Its flow cross-section gradually decreases along the material flow direction, and the discharge port of the feed pipe is set downward.

[0016] Optionally, the material stepper may employ, but is not limited to, a spiral conveying structure, a pneumatic conveying structure, and an ultrasonic conveying structure.

[0017] Optionally, the feeding mechanism includes a feeding bin and an oxygen-venting storage bin. The feeding bin is located above the feeding end of the conveying mechanism, and its bottom has a discharge port connected to the conveying mechanism. The storage bin and the feeding bin are connected by a feeding pipe.

[0018] Optionally, the furnace tube discharge end is provided with a discharge cavity in a fixed state. The furnace tube discharge end is rotatably connected to the discharge cavity. An air supply pipe is installed on the discharge cavity. The air inlet end of the air supply pipe is located outside the discharge cavity and is connected to an air source. The air outlet end of the air supply pipe extends into the furnace tube discharge end.

[0019] Optionally, the furnace tube discharge end is provided with multiple baffles, each of which is arranged sequentially at intervals along the axial direction of the activation reaction furnace tube, and each of which is staggered along the radial direction of the activation reaction furnace tube.

[0020] A porous carbon preparation process is also provided, comprising the following steps:

[0021] S1. The material is fed into the conveying mechanism by the feeding mechanism, and the material is fed into the inside of the activation reactor tube by the conveying mechanism. The valve assembly of the feeding mechanism is closed, and the inner cavity of the activation reactor tube is heated simultaneously.

[0022] S2. Process gas is introduced from the discharge end of the furnace tube and enters the interior of the activation reaction furnace tube. At the same time, the furnace tube drive mechanism is turned on and the activation reaction furnace tube is driven to rotate.

[0023] S3. During the reaction, the tail gas of the process gas carries some material into the recovery chamber. The material accumulates at the filter assembly. The receiving part at the top of the conveying mechanism receives the falling material and sends it into the inside of the activation reaction furnace tube by the conveying mechanism.

[0024] S4. After the required temperature and time for the reaction are reached, the heating is turned off, the feed end of the activation reaction furnace tube is raised, and the material is discharged. After the material is discharged, the next batch of porous carbon is prepared.

[0025] The present invention achieves the following technical effects compared to the prior art:

[0026] The entire porous carbon activation equipment is essentially a semi-continuous horizontal micron-level activation furnace. Materials can be discharged at high temperature and fed into a cooling chamber, then fed back into the activation furnace tubes at a sustained high temperature, achieving semi-continuous production. Compared to existing horizontal porous carbon activation equipment, the porous carbon activation equipment disclosed in this invention, due to the addition of a material recovery and circulation mechanism, can perform gas activation of finer powder materials, such as high-flow-rate gas activation of micron-level carbon powder. Compared to existing vertical fluidized beds, the porous carbon activation equipment disclosed in this invention, being horizontal, allows for a larger loading capacity, significantly increasing the loading amount. Simultaneously, due to the continuous rotation of the furnace body, the internal material has more thorough contact with the furnace tubes, resulting in more uniform heating and not affecting the uniformity of the internal temperature field of the material. In summary, the porous carbon activation equipment disclosed in this invention can solve the material loss problem caused by powder materials with high specific surface area and low bulk density during gas-based reactions, while increasing the effective loading capacity of the equipment, making industrial-scale mass production easier. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the overall structure of a porous carbon activation device in one example disclosed in this invention;

[0029] Figure 2 for Figure 1 Sectional view of the middle section of the structure;

[0030] Figure 3 This is a schematic diagram of the structure at the feed pipe in one example of the present invention;

[0031] Figure 4 for Figure 3 Top view;

[0032] Among them, 1-storage bin, 2-feeding pipe, 3-feeding bin, 4-feeding pipe, 5-feeding screw, 6-discharge port, 7-exhaust gas discharge channel, 8-pulse backflushing mechanism, 9-filter assembly, 10-activation reactor tube, 11-discharge cavity, 12-baffle plate, 13-gas supply pipe, 14-receiving part. Detailed Implementation

[0033] 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.

[0034] The purpose of this invention is to provide a porous carbon activation device and a porous carbon preparation process to solve the problems existing in the prior art. It can solve the problem of material loss caused by powder materials with high specific surface area and low bulk density during gas-involved reaction, while increasing the effective loading capacity of the device and making it easier to achieve industrial mass production.

[0035] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] like Figures 1 to 4 As shown, this invention provides a porous carbon activation device, including an activation reactor tube 10 and a material recovery and circulation mechanism; the axis of the activation reactor tube 10 extends horizontally and is equipped with a furnace tube drive mechanism to drive its rotation; one end of the activation reactor tube 10 is the furnace tube inlet end, and the other end is the furnace tube outlet end. Process gas is introduced into the furnace tube outlet end, and the process gas flows along the inside of the activation reactor tube 10 in the opposite direction to the flow of material inside the activation reactor tube 10; the material recovery and circulation mechanism is located at the furnace tube inlet end and is provided with a recovery chamber connected to the furnace tube inlet end. The top of the recovery chamber is connected to the exhaust gas discharge channel 7. The exhaust gas discharge channel 7 is provided with an exhaust port at its top. The exhaust port is connected to the exhaust gas treatment facility so that the exhaust gas after dust removal and filtration is discharged into the exhaust gas treatment facility for treatment before being discharged. The exhaust gas discharge channel 7 is provided with a filter assembly 9. The recovery chamber is provided with a material conveying mechanism. The material conveying mechanism is located below the filter assembly 9, and its top is provided with a receiving part 14 for receiving the material falling from the filter assembly 9. The feeding end of the material conveying mechanism is connected to a feeding mechanism, and the discharging end of the material conveying mechanism extends into the activation reaction furnace tube 10.

[0037] The entire porous carbon activation equipment is essentially a semi-continuous horizontal micron-level activation furnace. Materials can be discharged at high temperature and enter a cooling chamber, then fed into the activation reaction furnace tube at a constant high temperature, achieving semi-continuous production. Compared to existing horizontal porous carbon activation equipment, the porous carbon activation equipment disclosed in this invention, due to the addition of a material recovery and circulation mechanism, can perform gas activation of finer powder materials, such as high-flow-rate gas activation of micron-level carbon powder. Compared to existing vertical fluidized beds, the porous carbon activation equipment disclosed in this invention, being horizontal, can handle a larger loading capacity, significantly increasing the loading amount. Simultaneously, due to the continuous rotation of the furnace body, the internal material has more thorough contact with the furnace tube, resulting in more uniform heating and not affecting the uniformity of the internal temperature field of the material. In summary, the porous carbon activation equipment disclosed in this invention can solve the material loss problem caused by powder materials with high specific surface area and low bulk density during gas-based reactions, while increasing the effective loading capacity of the equipment, making industrial-scale mass production easier.

[0038] In this embodiment, the furnace tube inlet and outlet of the activation reaction furnace tube 10 are both equipped with rotary sealing mechanisms, which are connected to the recovery chamber and the discharge chamber 11 respectively.

[0039] In this embodiment, the inside of the activation reactor tube 10 is provided with a lifting plate and a guide plate. The lifting plate can increase the contact between the material and the process gas during rotation, and the guide plate can control the direction of the material.

[0040] In this embodiment, the activation reactor tube 10 is equipped with a furnace tube mounting frame. The recovery chamber, the conveying mechanism, and the furnace tube feed end are movably mounted on the furnace tube mounting frame in the vertical direction. The furnace tube mounting frame is equipped with a lifting mechanism so that the furnace tube feed end can be raised or lowered during discharge, thereby accelerating the discharge speed, while the furnace tube discharge end remains relatively stationary. Preferably, the furnace tube mounting frame is also equipped with a sliding track that extends horizontally along the material conveying direction, allowing the furnace tube feed end to be movably mounted on the sliding track, thus ensuring that the activation reactor tube 10 undergoes expansion and contraction during thermal expansion and contraction.

[0041] In one specific embodiment, the filter assembly 9 includes a filter element mechanism disposed within the exhaust gas discharge channel 7 and equipped with a pulse backflushing mechanism 8. Firstly, the filter element mechanism traps material, allowing the exhaust gas to be discharged through the exhaust gas discharge channel 7. This causes the material to remain on the surface of the filter element structure, and after gradual deposition, the trapped material naturally falls under its own weight and enters the conveying mechanism.

[0042] In this embodiment, the filter element mechanism can be a metal filter element, and different filtration precision metal filter elements can be installed according to the target recovery particle size of the material.

[0043] In this embodiment, preferably, the filter assembly 9 further includes a settling mechanism disposed below the filter element assembly, and having, but not limited to, a grid-like structure. The settling mechanism is equipped with a material discharge drive mechanism. By adding a grid-like settling mechanism, the material flow path is extended, allowing the material to settle in the conveying mechanism and then be transported to the activation reactor tube 10. The material discharge drive mechanism accelerates the material's detachment from the filter assembly 9 and its entry into the conveying mechanism, thereby accelerating material circulation and recirculation.

[0044] The material discharge drive mechanism includes, but is not limited to, a pulse backflushing mechanism 8 and an ultrasonic vibration mechanism. The pulse backflushing mechanism 8 is used to directly blow away the settling mechanism, causing the material to detach from the settling mechanism. Alternatively, the ultrasonic vibration mechanism can be used to connect its output end to the settling mechanism, causing the settling mechanism to vibrate and achieve the material discharge effect.

[0045] In one specific embodiment, the feeding mechanism includes a feed pipe 4, which is equipped with a material stepper inside. The discharge end of the feed pipe 4 extends into the activation reactor tube 10. It has a funnel-shaped structure and its flow cross section gradually decreases along the material flow direction. The discharge port 6 of the feed pipe 4 is set downward, which can reduce the entry of tail gas during normal activation and alleviate the feeding resistance.

[0046] Preferably, to further alleviate the feeding resistance, the outlet 6 of the feed pipe 4 extends into the activation reactor tube 10, and is located at a position approximately one-third of the diameter of the activation reactor tube 10 from its bottom.

[0047] In this embodiment, the feed pipe 4 is a U-shaped tubular structure with an open top. A partition is provided at the top, and through holes are arrayed on the partition as receiving parts 14, which allow materials to fall into the feed pipe 4. More preferably, the partition adopts a folded plate structure as the receiving part 14, and the bottom end of the groove of the folded plate structure is provided with a channel, which allows materials to fall into the feed pipe 4.

[0048] In one specific embodiment, the material stepper adopts, but is not limited to, a screw conveying structure, a pneumatic conveying structure, and an ultrasonic conveying structure to realize the conveying of materials by the feed pipe 4. The preferred material stepper adopts a screw conveying structure, which includes a feeding screw 5 extending along the axial direction of the feed pipe 4. The feeding screw 5 is rotatably installed in the feed pipe 4, and one end of the feeding screw 5 that is away from the activation reactor tube 10 extends out of the feed pipe 4 and is connected to a drive motor.

[0049] In summary, the entire material recycling mechanism filters the material through a filtration mechanism, settles the material through a sedimentation mechanism, and then re-feeds the material to the activation reactor tube 10 through the feed pipe 4, effectively solving the problem of material loss during the reaction process.

[0050] In one specific embodiment, the feeding mechanism includes a feeding hopper 3 and an oxygen-venting storage hopper 1. The feeding hopper 3 is located above the feeding end of the conveying mechanism, and its bottom has a discharge port connected to the conveying mechanism. The storage hopper 1 and the feeding hopper 3 are connected by a feeding pipe 2. The feeding hopper 3 is equipped with a negative pressure mechanism to allow material to be transported from the storage hopper 1 to the feeding hopper 3 through the feeding pipe 2 using negative pressure. A valve assembly is provided at the discharge port 6 of the storage hopper 1 to close the valve assembly after feeding to prevent exhaust gas from entering. Preferably, the feeding pipe 2 has a flexible structure to ensure that the furnace tube feeding end of the activation reactor tube 10 can move vertically.

[0051] In one specific embodiment, the furnace tube discharge end is provided with a discharge cavity 11 in a fixed state. The furnace tube discharge end is rotatably connected to the discharge cavity 11. An air supply pipe 13 is installed on the discharge cavity 11. The air inlet end of the air supply pipe 13 is located outside the discharge cavity 11 and is connected to an air source. The air outlet end of the air supply pipe 13 extends into the furnace tube discharge end.

[0052] In one specific embodiment, a plurality of baffles 12 are provided inside the discharge end of the furnace tube. These baffles 12 are arranged sequentially at intervals along the axial direction of the activation reaction furnace tube 10, and are also radially staggered along the activation reaction furnace tube 10. The discharge end of the furnace tube serves as a preheating chamber. By setting the baffles 12, the flow path of the process gas is increased, ensuring that the process gas is preheated to the material reaction temperature before contacting the material. It should be noted that during the gas inlet process, the process gas passes sequentially through the gaps between the baffles and enters the activation reaction furnace tube. During the discharge process, the material is lifted by the furnace tube inlet and, under the rotation of the activation reaction furnace tube, passes sequentially through the gaps between the baffles before being discharged.

[0053] A porous carbon preparation process is also provided, involving the physical activation of carbon materials, including the following steps:

[0054] S1. The material is fed into the conveying mechanism by the feeding mechanism, and the material is fed into the inside of the activation reactor tube 10 by the conveying mechanism. The valve assembly of the feeding mechanism is closed, and the inner cavity of the activation reactor tube 10 is heated simultaneously.

[0055] S2. Process gas is introduced from the discharge end of the furnace tube and enters the interior of the activation reaction furnace tube 10. At the same time, the furnace tube drive mechanism is turned on and the activation reaction furnace tube 10 is driven to rotate.

[0056] S3. During the reaction, the tail gas of the process gas carries some material into the recovery chamber. The material accumulates at the filter component 9. The receiving part 14 at the top of the conveying mechanism receives the falling material and sends it into the activation reaction furnace tube 10 by the conveying mechanism.

[0057] S4. After the required temperature and time for the reaction are reached, the heating is turned off, the feed end of the activation reactor tube 10 is raised, and the material is discharged. After the material is discharged, the next batch of porous carbon is prepared.

[0058] Any adaptive changes made according to actual needs are within the scope of protection of this invention.

[0059] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0060] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A porous carbon activation apparatus, characterized by, include: The activation reaction furnace tube extends horizontally along its axis and is equipped with a furnace tube drive mechanism to drive its rotation. One end of the activation reactor tube is the feed end, and the other end is the discharge end. Process gas is introduced into the discharge end of the furnace tube. The process gas flows along the inside of the activation reactor tube and in the opposite direction to the flow of the material inside the activation reactor tube. A material recycling mechanism is provided at the feed end of the furnace tube and has a recycling chamber directly connected to the feed end of the furnace tube. The top of the recycling chamber is connected to a tail gas discharge channel. A filter assembly is provided in the tail gas discharge channel. A material conveying mechanism is provided in the recycling chamber. The material conveying mechanism is located below the filter assembly and has a receiving part on its top for directly receiving the material falling from the filter assembly. The feed end of the material conveying mechanism is connected to a feeding mechanism, and the discharge end of the material conveying mechanism extends into the activation reaction furnace tube. During the reaction, the exhaust gas from the process gas carries some material into the recovery chamber. The material accumulates at the filter assembly, and the receiving part at the top of the conveying mechanism receives the detached material and sends it into the interior of the activation reactor tube by the conveying mechanism. The filter assembly includes a filter element mechanism, which is set in the exhaust gas discharge channel. The filter element mechanism traps the material, allowing the exhaust gas to be discharged through the exhaust gas discharge channel, and the material to remain on the surface of the filter element mechanism.

2. The porous carbon activation apparatus according to claim 1, wherein The filter assembly is equipped with a pulse backflushing mechanism.

3. The porous carbon activation apparatus of claim 2, wherein, The filter assembly also includes a settling mechanism disposed below the filter element assembly and having, but not limited to, a grid-like structure. The settling mechanism is equipped with a material discharge drive mechanism.

4. The porous carbon activation apparatus of claim 3, wherein, The material feeding drive mechanism includes, but is not limited to, the pulse backflushing mechanism and the ultrasonic vibration mechanism.

5. The porous carbon activation apparatus of claim 1, wherein, The feeding mechanism includes a feed pipe with a material stepper inside. The discharge end of the feed pipe extends into the activation reactor tube. It has a funnel-shaped structure and its flow cross-section gradually decreases along the material flow direction. The discharge port of the feed pipe is set downward.

6. The porous carbon activation apparatus of claim 5, wherein, The material stepper adopts, but is not limited to, a spiral conveying structure, a pneumatic conveying structure, and an ultrasonic conveying structure.

7. The porous carbon activation apparatus of claim 1, wherein, The feeding mechanism includes a feeding bin and an oxygen-venting storage bin. The feeding bin is located above the feeding end of the conveying mechanism, and its bottom has a discharge port connected to the conveying mechanism. The storage bin and the feeding bin are connected by a feeding pipe.

8. The porous carbon activation apparatus of claim 1, wherein, The furnace tube discharge end is provided with a discharge cavity in a fixed state. The furnace tube discharge end is rotatably connected to the discharge cavity. An air supply pipe is installed on the discharge cavity. The air inlet of the air supply pipe is located outside the discharge cavity and is connected to an air source. The air outlet of the air supply pipe extends into the furnace tube discharge end.

9. The porous carbon activation apparatus of claim 8, wherein, The furnace tube discharge end is provided with multiple baffles, each of which is arranged sequentially at intervals along the axial direction of the activation reaction furnace tube, and each of which is staggered along the radial direction of the activation reaction furnace tube.

10. A process for producing porous carbon using the porous carbon activation apparatus according to any one of claims 1 to 9, characterized by, The process includes the following steps: S1, feeding the material into the conveying mechanism via the feeding mechanism, feeding the material into the inside of the activation reactor tube via the conveying mechanism, closing the valve assembly of the feeding mechanism, and simultaneously heating the inner cavity of the activation reactor tube; S2. Process gas is introduced from the discharge end of the furnace tube and enters the interior of the activation reaction furnace tube. At the same time, the furnace tube drive mechanism is turned on and the activation reaction furnace tube is driven to rotate. S3. During the reaction, the tail gas of the process gas carries some material into the recovery chamber. The material accumulates at the filter assembly. The receiving part at the top of the conveying mechanism receives the falling material and sends it into the inside of the activation reaction furnace tube by the conveying mechanism. S4. After the required temperature and time for the reaction are reached, the heating is turned off, the feed end of the activation reaction furnace tube is raised, and the material is discharged. After the material is discharged, the next batch of porous carbon is prepared.

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