Biomass activated carbon continuous preparation system and working method

Abstract

The invention discloses a biomass activated carbon continuous preparation system and a working method. The biomass activated carbon continuous preparation system comprises a pretreatment device (1), a draining and conveying device (2), a segmented heating device (3), an activating device (4) and a drying device (5) which are arranged in sequence. Activated carbon raw materials are pretreated, impregnated and subjected to impurity removal and pass through the draining conveying belt, the drained and dewatered materials continue to pass through the sectional heating furnace through the conveying belt, and the heating furnace is divided into a preheating section, a high-temperature section and a cooling section to be sequentially subjected to carbonization treatment. And the carbonized material enters an activation box to be activated and dried, and finally, the material is discharged and stored. Compared with the prior art, the biomass activated carbon continuous preparation system provided by the invention has the advantages of simplicity, high efficiency, heat cyclic utilization, program operation and automatic discharging integration.

Description

Technical Field

[0001] The present invention relates to the technical field of biomass activated carbon preparation, and particularly to a continuous preparation system and working method of biomass activated carbon. Background Art

[0002] Activated carbon is a kind of carbon treated specially. It is obtained by heating organic raw materials in an oxygen-free environment and then reacting with gases to form a surface microporous structure. Due to the advantages of low cost, easy availability and renewability of biomass resources, they have gradually become relatively common raw materials for activated carbon at present. More and more scholars have carried out research on preparing activated carbon from biomass resources. Using biomass as a sustainable raw material for producing activated carbon can not only fix carbon elements and reduce the emissions of CO 2 or CH 4 , but also convert it into valuable carbon materials to realize the recycling of carbon, with the characteristics of environmental protection, and play a certain role in achieving the carbon neutrality goal. The adsorption effect of activated carbon is remarkable, but the current technological level limits the preparation of activated carbon, and there are problems such as irregular pore structure, unstable surface properties and limited self-strength, which have certain limitations on the application of activated carbon. Therefore, in order to obtain activated carbon with more pore structures, larger specific surface area and better adsorption performance, scholars need to continue to explore and research in aspects such as raw materials and preparation methods.

[0003] The invention of an activated carbon cooling device and an activated carbon converter in Patent CN210855285U provides an activated carbon preparation device and an application method. The device is a heat dissipation pipeline spirally wound around the outer wall of the converter body. The carbon inlet of the heat dissipation pipeline is arranged at the inner side wall position of the converter body and is communicated with the inner cavity of the converter body. A spraying device with a spraying direction towards the heat dissipation pipeline is arranged at the corresponding position outside the heat dissipation pipeline. Activated carbon comes out of the converter body and enters the heat dissipation pipeline. Water is sprayed on the heat dissipation pipeline through the spraying device, and the water evaporates to indirectly absorb the heat of the activated carbon, so that the activated carbon can be quickly cooled to room temperature in the heat dissipation pipeline. However, when the activated carbon just comes out of the converter, its temperature is relatively high. Spraying water on the activated carbon for cooling will cause the surface of the activated carbon to shrink, resulting in a decline in the indicators of the activated carbon and affecting the quality of the activated carbon.

[0004] Patent CN105645407A discloses a method and system for industrial production of activated carbon from hemp stalks by external heat carbonization method. In the pre-treatment drying process of hemp stalks, the combustible gas tail gas of the carbonization furnace is used for drying to remove moisture and part of volatile components in the raw materials, which can not only improve the adsorption performance and product yield of activated carbon products, but also realize large-scale industrial production of activated carbon from hemp stalks. However, this method uses an external heating method for carbonization, with a slow heating rate and uneven temperature in the material layer, resulting in inconsistent activation reaction rates and unstable quality of the activated carbon.

[0005] The preparation process of activated carbon generally includes stages such as cleaning, impregnation, carbonization, cleaning, and drying. The current technology is batch operation. After the single feeding treatment in each stage is completed, all the products are discharged and then re-fed. Then the semi-finished materials prepared enter the next section for processing. Parameters such as the composition, temperature, pressure, and flow rate of inert gas of the materials on the operating equipment change with time, belonging to an unstable operating state. The connection operations between each section are discontinuous, resulting in waste of time and resources. The heating furnace is batch filling, and the repeated heating, constant temperature, and cooling of the heating furnace lead to energy loss and resource waste.

[0006] Therefore, there is an urgent need for a continuous preparation device and working method for biomass activated carbon that is simple, efficient, has heat recycling, program control, continuous operation, and automatic discharging integration. Summary of the Invention

[0007] In view of the above problems in the prior art, the present invention proposes a continuous preparation system and working method for biomass activated carbon. The biomass activated carbon raw material undergoes pretreatment by a pretreatment device, draining treatment by a draining and transmission device, carbonization heating treatment by a segmented heating device, activation treatment by an activation device, and drying treatment by a drying device to obtain activated carbon products. A continuous preparation device and working method for biomass activated carbon that are simple, efficient, have heat recycling, program control, continuous operation, and automatic discharging integration are provided.

[0008] In order to achieve the above object, the present invention has the following technical solutions:

[0009] The first object of the present invention is to provide a continuous preparation system for biomass activated carbon, which includes a pretreatment device, a draining and transmission device, a segmented heating device, an activation device, and a drying device; the pretreatment device, the draining and transmission device, the segmented heating device, the activation device, and the drying device are arranged in sequence.

[0010] Further, each stage, the draining and transmission device, the segmented heating device, the activation device, and the drying device are modular devices, and the number of devices can be increased or decreased respectively according to technical requirements.

[0011] Further, the pretreatment device is used for pretreating biomass activated carbon; the draining and transmission device is used for transporting and draining the materials treated by the pretreatment device; the segmented heating device is used for hot air drying and dehydrating the materials drained by the draining and transmission device; the activation device is used for activating the materials treated by the segmented heating device; the drying device is used for drying the materials activated by the activation device.

[0012] Further, the pre-treatment device includes a solution adjuster, a solution circulation outlet, a feeding port, a screw agitator, an impregnation tank baffle, a transportation and collection tank, a solution circulation inlet, a propeller injection hole, a solid-liquid separator, and a raw material feeding hopper baffle.

[0013] Further, the draining and conveying device includes a draining conveyor belt, a heating conveyor belt, a conveying propeller, and a gas-liquid separator in the pre-treatment stage.

[0014] Further, the segmented heating device includes a preheating section, a high-temperature section, a cooling section, an inert gas outlet, a heating furnace inlet, and a draining section outlet.

[0015] Further, the activation device includes an activation device feeding hopper, a solution injection port, a rotary agitator, an activation device feeding hopper baffle, an activation tank bottom discharge baffle, and an activator regulator.

[0016] Further, the drying device includes a stirrer paddle air hole, a screw agitator, a circulating drying inlet, a discharging paddle, a finished product drying gas-liquid separator, and a drying stage gas outlet.

[0017] Further, the pre-treatment device further includes an impregnation tank;

[0018] The impregnation tank is provided with a solution circulation outlet, which is arranged on the side of the impregnation tank and is connected to the II section of the solution adjuster;

[0019] The impregnation tank is provided with a feeding port, which is arranged on the upper part of the impregnation tank and is provided with a raw material feeding hopper baffle;

[0020] The impregnation tank is connected with an impregnation tank baffle, and the impregnation tank baffle is connected to the bottom of the side of the impregnation tank;

[0021] The impregnation tank is internally connected with a screw agitator, and the screw agitator is provided with a propeller injection hole;

[0022] The solution adjuster includes a section I, a section II, and a section III arranged in sequence from top to bottom;

[0023] The transportation and collection tank is arranged corresponding to the impregnation tank baffle. When the impregnation tank baffle is opened, the screw agitator pushes the processed material from the impregnation tank into the transportation and collection tank;

[0024] The transportation and collection tank is arranged corresponding to the impregnation tank. The transportation and collection tank is used to receive the processed material in the impregnation tank. The transportation and collection tank is arranged corresponding to the draining conveyor belt of the draining and conveying device, and the draining conveyor belt is used to convey the processed material in the transportation and collection tank;

[0025] The solid-liquid separator is respectively connected to the transportation and collection tank, the feeding port, and the third section of the solution adjuster. The solid-liquid separator is used to separate the solution collected in the transportation and collection tank, return the liquid to the solution adjuster for recycling, and return the solid to the raw material feeding port for reuse;

[0026] The solution adjuster is respectively connected to the screw agitator and the impregnation tank. The first section and the third section of the solution adjuster are respectively connected to the screw agitator;

[0027] A solution circulation inlet is provided on the solution adjuster, and the solution circulation inlet is provided on the second section of the solution adjuster;

[0028] The solution circulation inlet is connected to the gas-liquid separator in the pretreatment stage of the draining and transporting device.

[0029] Further, the draining and transporting device further includes a draining box;

[0030] One ends of the draining conveyor belt, the heating conveyor belt, and the transmission screw are arranged in the draining box, and the other end of the heating conveyor belt extends out of the draining box;

[0031] The heating conveyor belt is arranged corresponding to the draining conveyor belt, and the processed material on the draining conveyor belt continues to be conveyed to the sectional heating device through the heating conveyor belt;

[0032] The transmission screw is arranged at the bottom of the draining box, and the transmission screw is arranged below the heating conveyor belt. The transmission screw is used to re-feed the water-containing material scattered by the heating conveyor belt into the transportation and collection tank;

[0033] The gas-liquid separator in the pretreatment stage is respectively connected to the heating furnace air inlet of the sectional heating device, the air outlet of the draining section of the sectional heating device (arranged on the draining box), the finished product drying gas-liquid separator of the drying device, and the solution circulation inlet of the pretreatment device. The gas enters the gas-liquid separator in the pretreatment stage through the air outlet of the draining section for gas-liquid separation. The gas enters the sectional heating device through the heating furnace air inlet of the sectional heating device for recycling. The gas separated by the finished product drying gas-liquid separator of the drying device returns to the gas-liquid separator in the pretreatment stage for recycling, and the liquid enters the solution circulation inlet of the pretreatment device for recycling.

[0034] Further, the sectional heating device further includes a sectional heating furnace;

[0035] The sectional heating furnace includes a preheating section, a high-temperature section, and a cooling section arranged in sequence;

[0036] The heating conveyor belt passes through the preheating section, the high-temperature section, and the cooling section in sequence;

[0037] An inert gas outlet is provided on the heating conveyor belt;

[0038] The inlet of the heating furnace is arranged at one end of the heating conveyor belt away from the draining box;

[0039] The outlet of the draining section is arranged at the upper part of the draining box.

[0040] Furthermore, the activation device further includes an activation box;

[0041] The activation box is provided with an activator outlet, the activator outlet is arranged on the side of the activation box, and the upper part of the activator outlet is connected to the activator regulator;

[0042] The activator regulator is respectively connected to the activation box and the rotary stirring paddle;

[0043] One end of the heating conveyor belt away from the draining box is correspondingly arranged with the activation box, and the material after the cooling section enters the activation box;

[0044] The activation box is provided with an activation device feed hopper, the activation device feed hopper is arranged at the upper part of the activation box, the activation device feed hopper is arranged below the heating conveyor belt, and the activation device feed hopper is provided with an activation device feed hopper baffle;

[0045] The activation box is connected with an activation box bottom discharge baffle, the activation box bottom discharge baffle is connected to the bottom of the side of the activation box, and when the activation box bottom discharge baffle is opened, the activated material is discharged from the activation box bottom baffle into the drying device;

[0046] The activation box is internally connected with a rotary stirring paddle, and the rotary stirring paddle is provided with a solution injection port;

[0047] The activator regulator is connected to the rotary stirring paddle.

[0048] Furthermore, the drying device further includes a material drying box;

[0049] The material drying box is provided with a drying stage gas outlet;

[0050] The finished product drying gas-liquid separator is respectively connected to the pretreatment stage gas-liquid separator of the draining transmission device, the activator regulator of the activation device, and the drying stage gas outlet of the drying device. The drying stage gas enters the finished product drying gas-liquid separator from the drying stage gas outlet to recycle the gas and liquid respectively. The gas separated by the finished product drying gas-liquid separator returns to the pretreatment stage gas-liquid separator for recycling, and the liquid enters the activator regulator for recycling;

[0051] The upper part of the material drying box is provided with a circulating drying air inlet;

[0052] The inside of the material drying box is provided with a spiral stirring paddle, and the spiral stirring paddle is provided with stirring paddle air holes;

[0053] Inside the material drying oven, there is a discharge paddle for discharging the dried material.

[0054] Furthermore, both the spiral stirring paddle and the rotary stirring paddle are stirring paddles with a hollow structure.

[0055] Furthermore, the spiral stirring paddle, the conveying screw propeller, and the rotary stirring paddle are all horizontal stirring paddles, while the discharge paddle is a vertical stirring paddle.

[0056] The second object of the present invention is to provide an application method for a continuous preparation system of biomass activated carbon. The working method includes the following steps:

[0057] (1) Pretreatment of activated carbon: Biomass activated carbon is pretreated in a pretreatment device. The treatment includes alkali washing, water washing, and medicament impregnation and stirring. The spiral stirring paddle in the pretreatment device operates to make the material flow in the pretreatment device. During pretreatment, the solvent enters through the spiral blade injection holes of the spiral stirring paddle, the solution enters from the lower spiral stirring paddle, and flows out from the upper solution circulation outlet. The solution concentration is adjusted for recycling. After the material reaches the requirements through stirring and impregnation, the spiral stirring paddle pushes the treated material into the draining and conveying device for draining treatment;

[0058] (2) Draining treatment: After the pretreated material enters the draining and conveying device, it passes through the draining conveyor belt, the heating conveyor belt, and enters the segmented heating device. During the transportation of the draining conveyor belt and the heating conveyor belt, draining operations are performed on the material. The inert gas becomes hot gas after passing through the segmented heating device, and through the heating conveyor belt, the residual heat is used to perform hot air drying and dehydration on the material on the heating conveyor belt;

[0059] (3) Carbonization heating: The material sequentially passes through the preheating section, the high-temperature section, and the cooling section. Each section of the heating furnace is in a constant temperature state. The inert gas enters the preheating section, the high-temperature section, the cooling section, and the heating conveyor belt to create an anaerobic reaction environment for the material;

[0060] (4) Activation stage: After the material passes through the cooling section of the heating furnace, it enters the activation device. The rotary stirring paddle evenly mixes the material in the activation device. The solution is sprayed through the hollow pipe of the rotary stirring paddle. The activation solvent enters through the hollow pipe and the solution injection port of the lower rotary stirring paddle, and flows out from the upper activator outlet. After configuration adjustment, it re-enters the activation device for activation;

[0061] (5) Drying stage: The activated material is discharged from the activation device into the material drying device. The heating gas of the heating furnace enters the material drying device to evenly stir the material up and down. The hot gas of the segmented heating device is used for drying. The inert gas is recycled. After the dried gas is separated, the gas returns to the segmented heating device for recycling, and the liquid enters the activation device for recycling. The dried material is discharged.

[0062] Further, the working method includes the following steps:

[0063] (1) Pretreatment of activated carbon

[0064] The biomass activated carbon is pretreated in a pretreatment device. The treatment includes alkali washing, water washing, and medicament impregnation and stirring. Flexible conversion between various medicaments can be achieved by replacing the solution adjuster according to requirements. The biomass activated carbon raw material is fed from the feeding port, and the biological activated carbon raw material is impregnated, stirred, and washed. Inside the pretreatment device, there are double-layer or multi-layer horizontal spiral stirring paddles, which are staggered with each other and run in opposite directions, enabling the material to flow in opposite directions inside the pretreatment device and increasing the stirring uniformity of the material in the impregnation tank of the pretreatment device. In the pretreatment, the solvent enters through the spiral blade ejection holes of the hollow stirring spiral stirring paddle, enhancing the homogenization effect of the solvent and the material. The solution enters from the bottom hollow spiral stirring paddle and flows out from the solution circulation outlet at the upper part, and the solution concentration is adjusted by the solution adjuster for recycling. After the material reaches the requirements through stirring and impregnation, the impregnation tank baffle is opened, and the horizontal spiral stirring paddle pushes the treated material into the transportation collection pool, and then further enters the draining transmission device for draining treatment. The raw material after pretreatment enters the next process through the draining conveyor belt. The solution collected in the transportation collection pool is separated by a solid-liquid separator, the liquid returns to the solution adjuster for recycling, and the solid returns to the raw material feeding port for reuse.

[0065] (2) Draining treatment

[0066] The pretreated material enters the sectional heating furnace of the sectional heating device from the transportation collection pool through the draining conveyor belt and the heating conveyor belt of the draining transmission device. The transportation speed is set according to requirements, and draining operations are performed on the material during the transportation of the draining conveyor belt and the heating conveyor belt. The inert gas passes through the inlet of the heating furnace and becomes hot gas through the sectional heating furnace of the sectional heating device, and then passes through the inert gas outlet at the bottom of the heating conveyor belt, using the waste heat to perform hot air drying and dehydration on the material in the transportation section of the heating conveyor belt. The gas enters the gas-liquid separator in the pretreatment stage through the outlet of the draining section for gas-liquid separation. The gas enters the sectional heating furnace for recycling, and the liquid returns to the pretreatment device for recycling through the solution circulation inlet. A transmission screw paddle is arranged at the bottom of the draining box of the draining transmission device to send the scattered material on the heating conveyor belt back to the transportation collection pool of the pretreatment device for recycling.

[0067] (3) Carbonization heating

[0068] The material passes through the preheating section, high-temperature section, and cooling section of the sectional heating furnace in sequence at a set rate via the heating conveyor belt. Each section of the heating furnace is in a constant temperature state. The inert gas enters the sectional heating furnace and the heating conveyor belt through the heating furnace air inlet and the inert gas outlet included in the heating conveyor belt, creating an anaerobic reaction environment for the material. The heating rate, heating time, and cooling rate of the material are controlled by the transfer speed of the heating conveyor belt. The inert gas, after passing through the sectional heating furnace, is used for hot air drying in the pretreatment process and the finished product drying stage. The gas passes through the finished product drying gas-liquid separator to recycle the gas and liquid for reuse respectively.

[0069] (4) Activation stage

[0070] After passing through the cooling section of the heating furnace, the material enters the activation device feed hopper of the activation device. Inside the activation box of the activation device, there are rotating stirring paddles with counter-rotating spiral stirring for evenly mixing the material inside the activation box of the activation device. The rotating stirring paddle includes a hollow pipe and a solution injection port. The solution is sprayed from the hollow pipe of the rotating stirring paddle to promote the uniform mixing reaction of the material. The activation solvent enters through the hollow pipe and the solution injection port of the lower rotating stirring paddle and flows out from the upper activator outlet, passes through the activator regulator for configuration adjustment, and then re-enters the activation device for activation.

[0071] (5) Drying stage

[0072] The activated material is discharged from the discharge baffle at the bottom of the activation box of the activation device and enters the material drying device. The heating gas of the heating furnace enters the material drying box of the material drying device through the circulating drying air inlet and the stirring paddle air holes in the spiral stirring paddle. The spiral stirring paddle mixes the material up and down evenly. The spiral stirring paddle is hollow and has stirring paddle air holes, and uses the hot gas of the sectional heating device in the heating section for drying. The inert gas is recycled. The dried gas enters the finished product drying gas-liquid separator through the gas outlet in the material drying stage. The gas returns to the gas-liquid separator in the pretreatment stage and further returns to the sectional heating furnace section for recycling. The liquid enters the activator regulator for recycling. The dried material is discharged through the lower discharge paddle to complete the activation and drying process.

[0073] The application target of the present invention is in the fields such as the preparation of biomass activated carbon. The raw material of activated carbon is pretreated by impregnation to remove impurities, and after draining through a conveyor belt, the material after draining and water removal continues to pass through a segmented heating furnace through a conveyor belt. The heating furnace is divided into a preheating section, a high-temperature section, and a cooling section to carbonize the material in sequence. The carbonized material enters the activation box for activation and drying, and finally is unloaded and stored. An inert gas stream is heated through the heating furnace section, flows through the transportation section and the finished product drying section, and the inert gas is recycled for hot gas drying of the material, and the heat is recycled. In the high-temperature carbonization stage of the material, the reaction time and speed of the material in heating furnaces at different temperatures are controlled by setting the transportation rate of the conveyor belt. The inert gas forms an oxygen-free heating environment after passing through the heating section, and the generated heat-containing inert gas is used for drying the material to remove moisture. The humid heat gas is separated after entering the gas-liquid separator and further recycled. The impregnation solution and the activation solution are respectively passed through a hollow stirring paddle to pass the solution while stirring, increasing the reaction area and uniformity, and the solution is recycled from the bottom to the top. The impregnation solution adjuster and the activator adjuster are used to adjust the solution concentration to meet the technical requirements of different processes.

[0074] Compared with the prior art, the beneficial effects of the present invention are reflected in the following aspects:

[0075] (1) The heating unit is in a fixed position and does not need to perform frequent heating and cooling operations, saving energy. The material enters the preheating section, the heating section, and the cooling section according to a set program, the heating rate is stable, the temperature in the material layer is uniform, and the activation reaction rate is uniform, making the quality of the activated carbon more stable.

[0076] (2) The activated carbon is cooled by adopting a circulating inert gas injection method, which will not cause surface shrinkage of the activated carbon, and improves the indexes and quality of the activated carbon.

[0077] (3) In the pre-treatment drying and finished product drying procedures, the inert gas tail gas of the heating furnace is used for drying to remove moisture and part of the volatile components in the raw material, which can improve the adsorption performance and product yield of the activated carbon product, and recycle the heat energy resources.

[0078] (4) In the pre-treatment stage and the activation stage, a stirring paddle with a hollow structure is adopted, and stirring and chemical agent spraying are carried out simultaneously, increasing the mixing uniformity, improving the work efficiency and quality, and the chemical agent is recycled and treated to reduce the cost.

[0079] (5) The purpose of the present invention is to provide a continuous preparation device and application method of biomass activated carbon that is simple, efficient, with heat recycling, program operation, and automatic unloading integration to overcome the defects existing in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0080] Figure 1 It is a schematic structural diagram of the continuous preparation system of biomass activated carbon according to an embodiment of the present invention.

[0081] Figure 2 This is a schematic structural diagram of the pretreatment stage (mainly the pretreatment device) of the continuous preparation system of biomass activated carbon according to an embodiment of the present invention.

[0082] Figure 3 This is a schematic structural diagram of the draining treatment (mainly the draining transmission device) of the continuous preparation system of biomass activated carbon according to an embodiment of the present invention.

[0083] Figure 4 This is a schematic structural diagram of the carbonization heating stage (mainly the segmented heating device) of the continuous preparation system of biomass activated carbon according to an embodiment of the present invention.

[0084] Figure 5 This is a schematic structural diagram of the activation stage (mainly the activation device) of the continuous preparation system of biomass activated carbon according to an embodiment of the present invention.

[0085] Figure 6 This is a schematic structural diagram of the drying stage (mainly the drying device) of the continuous preparation system of biomass activated carbon according to an embodiment of the present invention.

[0086] As shown by the reference numerals in the figure:

[0087] 1. Pretreatment device; 1-1. Solution adjuster; 1-2. Solution circulation outlet; 1-3. Feeding port; 1-4. Screw agitator; 1-5. Impregnation tank baffle; 1-6. Transportation and collection tank; 1-7. Solution circulation inlet; 1-8. Propeller injection hole; 1-9. Solid-liquid separator; 1-10. Raw material feed hopper baffle; 2. Draining transmission device; 2-1. Drainage conveyor belt; 2-2. Heating conveyor belt; 2-3. Transmission screw; 2-4. Gas-liquid separator in the pretreatment stage; 3. Segmented heating device; 3-1. Preheating section; 3-2. High-temperature section; 3-3. Cooling section; 3-4. Inert gas outlet; 3-5. Heating furnace inlet; 3-6. Outlet of the draining section; 4. Activation device; 4-1. Activation device feed hopper; 4-2. Solution injection port; 4-3. Rotary agitator; 4-4. Activation device feed hopper baffle; 4-5. Bottom discharge baffle of the activation tank; 4-6. Activator regulator; 4-7. Activator outlet; 5. Drying device; 5-1. Stirring paddle air hole; 5-2. Screw agitator; 5-3. Circulating drying inlet; 5-4. Discharge paddle; 5-5. Product drying gas-liquid separator; 5-6. Gas outlet in the drying stage. Specific embodiments

[0088] The present invention will be further described in detail below in conjunction with specific embodiments, but it is by no means a limitation to the present invention. Features such as preparation means, materials, structures, or composition ratios that are not clearly stated in the present technical solution are all regarded as common technical features disclosed in the prior art.

[0089] In the present invention, unless otherwise clearly defined or limited, terms such as "installation", "connection", "linkage", "fixation", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral one; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication between two components or the interaction relationship between two components; terms such as "upper", "lower", "left", "right", etc. are only used to represent relative position relationships. When the absolute position of the object being described changes, the relative position relationship may change. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0090] It should be noted that in the present invention, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0091] Embodiment

[0092] As Figures 1 to 6 shown, this embodiment provides a continuous preparation system for biomass activated carbon, which includes a pretreatment device 1, a draining and conveying device 2, a segmented heating device 3, an activation device 4, and a drying device 5; the pretreatment device 1, the draining and conveying device 2, the segmented heating device 3, the activation device 4, and the drying device 5 are arranged in sequence.

[0093] Each stage (pretreatment device 1, draining and conveying device 2, segmented heating device 3, activation device 4, drying device 5) is a modular device, and the number of devices can be increased or decreased respectively according to technical requirements.

[0094] The pretreatment device 1 is used for pretreating biomass activated carbon; the draining and conveying device 2 is used for transporting and draining the materials processed by the pretreatment device 1; the segmented heating device 3 is used for hot air drying and dehydrating the materials drained by the draining and conveying device 2; the activation device 4 is used for activating the materials processed by the segmented heating device 3; the drying device 5 is used for drying the materials activated by the activation device 4.

[0095] The pretreatment device 1 includes a solution adjuster 1-1, a solution circulation outlet 1-2, a feeding port 1-3, a spiral agitator 1-4, an impregnation tank baffle 1-5, a transportation and collection tank 1-6, a solution circulation inlet 1-7, a propeller injection hole 1-8, a solid-liquid separator 1-9, and a raw material feed hopper baffle 1-10.

[0096] The draining and conveying device 2 includes a draining conveyor belt 2-1, a heating conveyor belt 2-2, a conveying propeller 2-3, and a gas-liquid separator 2-4 in the pretreatment stage.

[0097] The segmented heating device 3 includes a preheating section 3-1, a high-temperature section 3-2, a cooling section 3-3, an inert gas outlet 3-4, a heating furnace inlet 3-5, and a draining section outlet 3-6.

[0098] The activation device 4 includes an activation device feed hopper 4-1, a solution injection port 4-2, a rotary agitator 4-3, an activation device feed hopper baffle 4-4, an activation tank bottom discharge baffle 4-5, and an activator regulator 4-6.

[0099] The drying device 5 includes a stirrer paddle air hole 5-1, a spiral stirrer 5-2, a circulating drying inlet 5-3, a discharging paddle 5-4, a finished product drying gas-liquid separator 5-5, and a drying stage gas outlet 5-6.

[0100] The pretreatment device 1 further includes an impregnation tank;

[0101] The impregnation tank is provided with a solution circulation outlet 1-2, the solution circulation outlet 1-2 is arranged on the side of the impregnation tank, and the solution circulation outlet 1-2 is connected to the II section of the solution adjuster 1-1;

[0102] The impregnation tank is provided with a feeding port 1-3, the feeding port 1-3 is arranged at the upper part of the impregnation tank, and the feeding port 1-3 is provided with a raw material feed hopper baffle 1-10;

[0103] The impregnation tank is connected with an impregnation tank baffle 1-5, and the impregnation tank baffle 1-5 is connected to the bottom of the side of the impregnation tank;

[0104] A spiral stirrer 1-4 is connected inside the impregnation tank, and the spiral stirrer 1-4 is provided with a propeller injection hole 1-8;

[0105] The solution adjuster 1-1 includes a section I, a section II, and a section III arranged in sequence from top to bottom;

[0106] The transportation and collection tank 1-6 is arranged corresponding to the impregnation tank baffle 1-5. When the impregnation tank baffle 1-5 is opened, the spiral stirrer 1-4 pushes the processed material from the impregnation tank into the transportation and collection tank 1-6;

[0107] The transportation and collection tanks 1-6 are arranged corresponding to the impregnation tanks. The transportation and collection tanks 1-6 are used to receive the processed materials in the impregnation tanks. The transportation and collection tanks 1-6 are arranged corresponding to the water-draining conveyor belt 2-1 of the draining transmission device 2. The water-draining conveyor belt 2-1 is used to convey the processed materials in the transportation and collection tanks 1-6;

[0108] The solid-liquid separator 1-9 is respectively connected to the transportation and collection tanks 1-6, the feeding port 1-3, and the third section of the solution adjuster 1-1. The solid-liquid separator 1-9 is used to separate the solution collected in the transportation and collection tanks 1-6, return the liquid to the solution adjuster 1-1 for recycling, and return the solid to the raw material feeding port 1-3 for reuse;

[0109] The solution adjuster 1-1 is respectively connected to the spiral stirring paddle 1-4 and the impregnation tank. The first section and the third section of the solution adjuster 1-1 are respectively connected to the spiral stirring paddle 1-4;

[0110] A solution circulation inlet 1-7 is provided on the solution adjuster 1-1. The solution circulation inlet 1-7 is arranged in the second section of the solution adjuster 1-1;

[0111] The solution circulation inlet 1-7 is connected to the gas-liquid separator 2-4 in the pretreatment stage of the draining transmission device 2.

[0112] The draining transmission device 2 further includes a draining box;

[0113] One end of the water-draining conveyor belt 2-1, the heating conveyor belt 2-2, and the transmission screw 2-3 are arranged in the draining box. The other end of the heating conveyor belt 2-2 extends out of the draining box;

[0114] The heating conveyor belt 2-2 is arranged corresponding to the water-draining conveyor belt 2-1. The processed materials on the water-draining conveyor belt 2-1 are continuously conveyed to the sectional heating device 3 through the heating conveyor belt 2-2;

[0115] The transmission screw 2-3 is arranged at the bottom of the draining box. The transmission screw 2-3 is arranged below the heating conveyor belt 2-2. The transmission screw 2-3 is used to re-feed the water-containing materials scattered by the heating conveyor belt 2-2 into the transportation and collection tanks 1-6. The scattering of materials is as follows: during the transportation process, the gaps in the equipment, the stacking height of the materials, the vibration of the conveyor belt, and the hot air drying process may cause the scattering of the materials;

[0116] In the pre-treatment stage, the gas-liquid separator 2-4 is respectively connected to the inlet of the heating furnace 3-5 of the segmented heating device 3, the outlet of the draining section 3-6 of the segmented heating device 3 (the outlet of the draining section 3-6 is provided on the draining box), the finished product drying gas-liquid separator 5-5 of the drying device 5, and the solution circulation inlet 1-7 of the pre-treatment device 1. The gas enters the pre-treatment stage gas-liquid separator 2-4 through the outlet of the draining section 3-6 for gas-liquid separation. The gas enters the segmented heating device 3 through the inlet of the heating furnace 3-5 of the segmented heating device 3 for recycling. The gas separated by the finished product drying gas-liquid separator 5-5 of the drying device 5 returns to the pre-treatment stage gas-liquid separator 2-4 for recycling, and the liquid enters the solution circulation inlet 1-7 of the pre-treatment device 1 for recycling.

[0117] The segmented heating device 3 further includes a segmented heating furnace;

[0118] The segmented heating furnace includes a preheating section 3-1, a high-temperature section 3-2, and a cooling section 3-3 arranged in sequence;

[0119] The heating conveyor belt 2-2 passes through the preheating section 3-1, the high-temperature section 3-2, and the cooling section 3-3 in sequence;

[0120] An inert gas outlet 3-4 is provided on the heating conveyor belt 2-2;

[0121] The inlet of the heating furnace 3-5 is provided at one end of the heating conveyor belt 2-2 away from the draining box;

[0122] The outlet of the draining section 3-6 is provided at the upper part of the draining box.

[0123] The activation device 4 further includes an activation box;

[0124] An activator outlet is provided on the activation box. The activator outlet is provided on the side of the activation box and is connected to the upper part of the activator regulator 4-6;

[0125] The activator regulator 4-6 is respectively connected to the activation box and the rotary stirring paddle 4-3;

[0126] One end of the heating conveyor belt 2-2 away from the draining box is arranged corresponding to the activation box, and the material after passing through the cooling section 3-3 enters the activation box;

[0127] An activation device feed hopper 4-1 is provided on the activation box. The activation device feed hopper 4-1 is provided at the upper part of the activation box, is provided below the heating conveyor belt 2-2, and the activation device feed hopper 4-1 is provided with an activation device feed hopper baffle 4-4;

[0128] An activation box bottom discharge baffle 4-5 is connected to the activation box. The activation box bottom discharge baffle 4-5 is connected to the bottom side of the activation box. When the activation box bottom discharge baffle 4-5 is opened, the activated material is discharged from the activation box bottom baffle 4-5 into the drying device 5;

[0129] A rotary stirring paddle 4-3 is connected inside the activation box, and a solution injection port 4-2 is provided on the rotary stirring paddle 4-3;

[0130] The activator regulator 4-6 is connected to the rotary stirring paddle 4-3.

[0131] The drying device 5 further includes a material drying box;

[0132] A drying stage gas outlet 5-6 is provided on the material drying box;

[0133] The finished product drying gas-liquid separator 5-5 is respectively connected to the pretreatment stage gas-liquid separator 2-4 of the draining and conveying device 2, the activator regulator 4-6 of the activation device 4, and the drying stage gas outlet 5-6 of the drying device 5. The gas in the drying stage enters the finished product drying gas-liquid separator 5-5 from the drying stage gas outlet 5-6, and the gas and liquid are recycled respectively. The gas separated by the finished product drying gas-liquid separator 5-5 returns to the pretreatment stage gas-liquid separator 2-4 for recycling, and the liquid enters the activator regulator 4-6 for recycling;

[0134] An upper part of the material drying box is provided with a circulating drying air inlet 5-3;

[0135] A spiral stirring paddle 5-2 is provided inside the material drying box, and a stirring paddle air hole 5-1 is provided on the spiral stirring paddle 5-2;

[0136] A discharging paddle 5-4 is provided inside the material drying box, and the discharging paddle 5-4 is used for discharging the dried material.

[0137] The spiral stirring paddle 1-4 and the rotary stirring paddle 4-3 are both stirring paddles with a hollow structure.

[0138] The spiral stirring paddle 1-4, the conveying spiral paddle 2-3, and the rotary stirring paddle 4-3 are all horizontal stirring paddles, and the discharging paddle is a vertical stirring paddle.

[0139] In this embodiment, two spiral stirring paddles 1-4 are arranged from top to bottom, and the two spiral stirring paddles 1-4 are opposite to each other.

[0140] In this embodiment, two rotary stirring paddles 4-3 are arranged from top to bottom, and the two rotary stirring paddles 4-3 are opposite to each other.

[0141] Another application method (working method) of a continuous preparation system for biomass activated carbon is provided in this embodiment. The working method includes the following steps:

[0142] (1) Pretreatment of activated carbon

[0143] The biomass activated carbon is pretreated in the pretreatment device 1. The treatment includes alkali washing, water washing, and medicament impregnation and stirring. According to requirements, flexible conversion between various medicaments can be achieved by replacing the solution adjuster 1-1. The biomass activated carbon raw material is fed into the feeding port 1-3, and the biological activated carbon raw material is impregnated, stirred, and washed. Inside the pretreatment device 1, there are double-layer or multi-layer horizontal spiral stirring paddles 1-4, which are staggered and run in opposite directions, so that the materials flow in opposite directions inside the pretreatment device 1, increasing the stirring uniformity of the materials in the impregnation tank of the pretreatment device 1. In the pretreatment, the solvent enters through the spiral paddle injection holes 1-8 of the hollow stirring spiral stirring paddle 1-4, increasing the homogenization effect of the solvent and the materials. The solution enters from the bottom hollow spiral stirring paddle 1-4 and flows out from the solution circulation outlet 1-2 at the upper part, and the solution concentration is adjusted by the solution adjuster 1-1 for recycling. After the materials reach the requirements through stirring and impregnation, the impregnation tank baffle 1-5 is opened, and the horizontal spiral stirring paddle 1-4 pushes the treated materials into the transportation collection pool 1-6, and then further enters the draining transmission device 2 for draining treatment. The raw materials after pretreatment enter the next process through the draining conveyor belt 2-1. The solution collected in the transportation collection pool 1-6 is separated by the solid-liquid separator 1-9. The liquid returns to the solution adjuster 1-1 for recycling; the solid returns to the raw material feeding port 1-3 for reuse.

[0144] (2) Draining treatment

[0145] The pretreated materials enter the sectional heating furnace of the sectional heating device 3 from the transportation collection pool 1-6 through the draining conveyor belt 2-1 and the heating conveyor belt 2-2 of the draining transmission device 2. The transportation speed is set according to requirements, and draining operations are performed on the materials during the transportation of the draining conveyor belt 2-1 and the heating conveyor belt 2-2. The inert gas passes through the heating furnace air inlet 3-5 and becomes hot gas through the sectional heating furnace of the sectional heating device 3, and passes through the inert gas outlet 3-4 at the bottom of the heating conveyor belt 2-2, using the waste heat to perform hot air drying and dehydration on the materials in the transportation section of the heating conveyor belt 2-2. The gas enters the gas-liquid separator 2-4 in the pretreatment stage through the draining section gas outlet 3-6 for gas-liquid separation. The gas enters the sectional heating furnace for recycling, and the liquid returns to the pretreatment device 1 through the solution circulation inlet 1-7 for recycling. A transmission screw 2-3 is arranged at the bottom of the draining box of the draining transmission device 2 to send the materials scattered on the heating conveyor belt 2-2 back to the transportation collection pool 1-6 of the pretreatment device 1 for reuse.

[0146] (3) Carbonization heating

[0147] The material passes through the heating conveyor belt 2-2 at a set rate and sequentially passes through the preheating section 3-1, high-temperature section 3-2, and cooling section 3-3 of the sectional heating furnace. Each section of the heating furnace is in a constant temperature state. The inert gas enters the sectional heating furnace and the heating conveyor belt 2-2 through the heating furnace air inlet 3-5 and the inert gas outlet 3-4 included in the heating conveyor belt 2-2 to create an anaerobic reaction environment for the material. The heating rate, heating time, and cooling rate of the material are controlled by the transfer speed of the heating conveyor belt 2-2. The inert gas is used for hot air drying in the pretreatment process and the finished product drying stage after passing through the sectional heating furnace. The gas passes through the finished product drying gas-liquid separator 5-5 to recycle the gas and liquid for reuse respectively.

[0148] (4) Activation stage

[0149] After the material passes through the cooling section 3-3 of the heating furnace, it enters the activation device feed hopper 4-1 of the activation device 4. Inside the activation box of the activation device 4, there are rotating stirring paddles 4-3 with counter-rotating spiral stirring for evenly mixing the material inside the activation box of the activation device 4. The rotating stirring paddle 4-3 includes a hollow pipe and a solution injection port 4-2. The solution is sprayed from the hollow pipe of the rotating stirring paddle 4-3 to promote the uniform mixing reaction of the material. The activation solvent enters through the hollow pipe and the solution injection port 4-2 of the lower rotating stirring paddle 4-3 and flows out from the upper activator outlet 4-7, passes through the activator regulator 4-6 for configuration adjustment, and then re-enters the activation device 4 for activation.

[0150] (5) Drying stage

[0151] The activated material is unloaded from the discharge baffle 4-5 at the bottom of the activation box of the activation device 4 and enters the material drying device 5. The heating gas of the heating furnace enters the material drying box of the material drying device 5 through the circulating drying air inlet 5-3 and the stirring paddle air holes 5-1 in the spiral stirring paddle 5-2. The spiral stirring paddle 5-2 mixes the material up and down evenly. The spiral stirring paddle 5-2 is hollow and provided with stirring paddle air holes 5-1, and uses the hot air of the sectional heating device 3 in the heating section for drying. The inert gas is recycled. The dried gas enters the finished product drying gas-liquid separator 5-5 through the gas outlet 5-6 in the material drying stage. The gas returns to the gas-liquid separator 2-4 in the pretreatment stage and further returns to the sectional heating furnace section for recycling. The liquid enters the activator regulator 4-6 for recycling. The dried material is unloaded through the lower discharge paddle 5-4 to complete the activation and drying process.

[0152] Although the disclosed manner in the embodiments of this application is as above, the content is only an implementation manner for easy understanding. Any person of ordinary skill in the art should understand that without departing from the spirit and scope disclosed, any modifications and changes can be made in the form and details of the implementation. However, the scope of patent protection of the present invention still needs to be subject to the scope defined by the appended claims.

Claims

1. A continuous preparation system of biomass activated carbon, characterized in that: The biomass activated carbon continuous preparation system comprises a pre-treatment device (1), a draining and conveying device (2), a segmented heating device (3), an activation device (4), and a drying device (5) which are arranged in sequence; The pre-treatment device (1) is used to pre-treat biomass activated carbon; The pre-treatment device (1) comprises a spiral stirring paddle (1-4), wherein the spiral stirring paddle (1-4) is a hollow structure stirring paddle, and the spiral stirring paddle (1-4) is provided with a spiral propeller injection hole (1-8); The draining and transporting device (2) is used to transport and drain the material after being processed by the pre-processing device (1); The draining and transporting device (2) comprises a draining conveyor belt (2-1) and a heating conveyor belt (2-2) which are arranged in sequence, and the processed materials on the draining conveyor belt (2-1) are transported to the segmented heating device (3) via the heating conveyor belt (2-2); The segmented heating device (3) is used to perform hot air drying and dehydration on the material drained by the draining transmission device (2); The segment heating device (3) comprises a preheating segment (3-1), a high temperature segment (3-2), and a cooling segment (3-3) which are arranged in sequence; The activation device (4) is used to activate the material after being treated by the segmented heating device (3); The activation device (4) comprises a rotating stirring paddle (4-3), wherein the rotating stirring paddle (4-3) is a hollow structure stirring paddle, and a solution injection port (4-2) is provided on the rotating stirring paddle (4-3); The drying device (5) is used to dry the material activated by the activation device (4).

2. The biomass activated carbon continuous preparation system according to claim 1, characterized in that: The pre-treatment device (1) also includes an impregnation tank, a solution regulator (1-1), and a transport collection tank (1-6); The transport collection tank (1-6) is arranged corresponding to the impregnation box, and the transport collection tank (1-6) is used to receive the processed materials in the impregnation box; the transport collection tank (1-6) is arranged corresponding to the draining transmission device (2); the solution regulator (1-1) is respectively connected to the spiral stirring blade (1-4), the impregnation box, and the draining transmission device (2).

3. The continuous preparation system of biomass activated carbon according to claim 2, characterized in that: The pre-treatment device (1) also includes a solution circulation outlet (1-2), a feeding port (1-3), an impregnation box baffle (1-5), a solution circulation inlet (1-7), a solid-liquid separator (1-9), and a raw material feed hopper baffle (1-10); The impregnation box is provided with a solution circulation outlet (1-2), and the solution circulation outlet (1-2) is connected to the solution regulator (1-1); The impregnation box is provided with a feeding port (1-3), and the feeding port (1-3) is provided with a raw material feeding hopper baffle (1-10); The impregnation box is connected with an impregnation box baffle (1-5); The transport collection tank (1-6) is arranged correspondingly to the impregnation box baffle (1-5); The solid-liquid separator (1-9) is respectively connected to the transport collection tank (1-6), the feeding port (1-3), and the solution regulator (1-1); the solid-liquid separator (1-9) is used to separate the solution collected in the transport collection tank (1-6), return the liquid to the solution regulator (1-1) for recycling, and return the solid to the raw material feeding port (1-3) for reuse; The solution regulator (1-1) is connected to the spiral stirring blade (1-4) and the dipping tank respectively, and the solution regulator (1-1) is connected to the spiral stirring blade (1-4); The solution regulator (1-1) is provided with a solution circulation inlet (1-7); The solution circulation inlet (1-7) is connected to the drain transmission device (2).

4. The continuous preparation system of biomass activated carbon according to claim 1, characterized in that: The draining and transmission device (2) comprises a draining box, a transmission propeller (2-3), and a pre-treatment stage gas-liquid separator (2-4); The draining conveyor belt (2-1), one end of the heating conveyor belt (2-2), and the transmission propeller (2-3) are arranged in the draining box, and the other end of the heating conveyor belt (2-2) extends out of the draining box; The heating conveyor belt (2-2) and the drainage conveyor belt (2-1) are arranged correspondingly; The transmission propeller (2-3) is arranged below the heating conveyor belt (2-2); The pre-treatment stage gas-liquid separator (2-4) is respectively connected to the segmented heating device (3), the drain box, the drying device (5), and the pre-treatment device (1); the gas is separated into gas and liquid by the pre-treatment stage gas-liquid separator (2-4); the separated gas enters the segmented heating device (3) for recycling, and the separated liquid enters the pre-treatment device (1) for recycling.

5. The biomass activated carbon continuous preparation system according to claim 1, characterized in that: The segmented heating device (3) comprises a segmented heating furnace, a preheating section (3-1), a high temperature section (3-2), a cooling section (3-3), an inert gas air outlet (3-4), a heating furnace air inlet (3-5), and a draining section air outlet (3-6); The segmented heating furnace comprises a preheating section (3-1), a high temperature section (3-2), and a cooling section (3-3) which are arranged in sequence; The heating conveyor belt (2-2) passes through a preheating section (3-1), a high temperature section (3-2), and a cooling section (3-3) in sequence; The heating conveyor belt (2-2) is provided with an inert gas outlet (3-4); The heating furnace air inlet (3-5) is arranged at one end of the heating conveyor belt (2-2) of the draining transmission device (2) away from the draining box; The drain section air outlet (3-6) is arranged on the drain box of the drain transmission device (2).

6. The continuous preparation system of biomass activated carbon according to claim 1, characterized in that: The activation device (4) also includes an activation box and an activator regulator (4-6); The activator regulator (4-6) is connected to the activation box and the rotating stirring paddle (4-3) respectively; the heating conveyor belt (2-2) of the draining transmission device (2) is arranged at one end away from the draining box corresponding to the activation box.

7. The biomass activated carbon continuous preparation system according to claim 6, characterized in that: The activation device (4) also comprises an activation box, an activation device feed hopper (4-1), an activation device feed hopper baffle (4-4), an activation box bottom discharge baffle (4-5), and an activator regulator (4-6). The activation box is provided with an activator outlet; The activator regulator (4-6) is connected to the activator outlet of the activation box and the rotating stirring paddle (4-3) respectively; The end of the heating conveyor belt (2-2) of the draining and transporting device (2) away from the draining box is arranged corresponding to the activation device feed hopper (4-1) of the activation box; The activation box is provided with an activation device feed hopper (4-1), and the activation device feed hopper (4-1) is provided with an activation device feed hopper baffle (4-4); The activation box is connected to a discharge baffle plate (4-5) at the bottom of the activation box, and the discharge baffle plate (4-5) at the bottom of the activation box is used to discharge the activated material into a drying device (5).

8. The biomass activated carbon continuous preparation system according to claim 1, characterized in that: The drying device (5) comprises a material drying box, a finished product drying gas-liquid separator (5-5), and a drying stage gas outlet (5-6); The material drying box is provided with a drying stage gas outlet (5-6); The finished product drying gas-liquid separator (5-5) is respectively connected to the drying stage gas outlet (5-6) of the draining transmission device (2), the activation device (4), and the drying device (5); the drying stage gas enters the finished product drying gas-liquid separator (5-5), the separated gas returns to the draining transmission device (2) for recycling, and the liquid enters the activation device (4) for recycling.

9. The biomass activated carbon continuous preparation system according to claim 8, characterized in that: The drying device (5) further comprises a stirring paddle air hole (5-1), a spiral stirring paddle (5-2), a circulating drying air inlet (5-3), and a discharge paddle (5-4); The material drying box is provided with a circulating drying air inlet (5-3); A spiral stirring paddle (5-2) is provided inside the material drying box, and a stirring paddle air hole (5-1) is provided on the spiral stirring paddle (5-2); A discharging paddle (5-4) is arranged inside the material drying box.

10. A working method of a continuous preparation system of biomass activated carbon according to any one of claims 1 to 9, characterized in that: The working method comprises the following steps: (1) Activated carbon pretreatment: The biomass activated carbon is pretreated in the pretreatment device (1), and the treatment includes alkali washing, water washing and reagent impregnation and stirring. The spiral stirring paddle (1-4) in the pretreatment device (1) is operated to make the material flow in the pretreatment device (1). During the pretreatment, the solvent enters through the propeller injection hole (1-8) of the spiral stirring paddle (1-4), and the solution enters through the lower spiral stirring paddle (1-4) and flows out from the upper part. The concentration of the solution is adjusted for recycling. After the material meets the requirements after stirring and impregnation, the spiral stirring paddle (1-4) pushes the treated material into the draining transmission device (2) for draining treatment; (2) Drainage treatment: the pre-treated material enters the draining transmission device (2) and passes through the draining conveyor belt (2-1), the heating conveyor belt (2-2), and then enters the segmented heating device (3). During the transportation on the draining conveyor belt (2-1) and the heating conveyor belt (2-2), the material is drained. The inert gas is converted into hot gas by the segmented heating device (3) and passes through the heating conveyor belt (2-2). The residual heat is used to perform hot air drying and dehydration on the material on the heating conveyor belt (2-2); (3) Carbonization heating: The material passes through the preheating section (3-1), high temperature section (3-2), and cooling section (3-3) in sequence. Each section of the heating furnace is in a constant temperature state. Inert gas enters the preheating section (3-1), high temperature section (3-2), cooling section (3-3) and heating conveyor belt (2-2) to achieve an oxygen-free reaction environment for the material. (4) Activation stage: the material enters the activation device (4) after passing through the cooling section (3-3) of the heating furnace, and the rotating stirring paddle (4-3) uniformly mixes the material in the activation device (4). The solution is sprayed from the hollow pipe of the rotating stirring paddle (4-3), and the activation solvent enters from the hollow pipe of the rotating stirring paddle (4-3) and the solution spray port (4-2) of the lower layer, flows out from the upper layer, and performs configuration adjustment, and then re-enters the activation device (4) for activation; (5) Drying stage: After activation, the material is discharged from the activation device (4) and enters the material drying device (5). The heating gas from the heating furnace enters the material drying device (5) to mix the material evenly from top to bottom. The material is dried and dried using the hot gas from the segmented heating device (3). The inert gas is recycled. After drying, the gas is separated and returned to the segmented heating device (3) for recycling. The liquid enters the activation device (4) for recycling. After drying, the material is discharged.

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