A preparation process and preparation device of supercapacitor carbon

Abstract

The invention discloses a preparation process of supercapacitor carbon and a preparation device thereof, which belong to the technical field of carbon material preparation. A preparation device of supercapacitor carbon includes a reaction component, which includes an outer furnace body. Both ends of the outer furnace body are respectively connected to a left cover and a right cover. An exhaust pipe is provided at the top of the end of the outer furnace body close to the left cover, and a discharge pipe is provided at the bottom of the end of the outer furnace body close to the left cover. A first electric-controlled valve is provided at the discharge pipe. A pushing component is movably provided inside the outer furnace body. The pushing component is used to push the raw materials after impregnation. A combustion furnace is provided at the bottom of the outer furnace body. The left cover is connected to the impregnation component through a material guide pipe. A physical activation component connected to the pushing component is provided on the reaction component. The physical activation component is filled with water. A temperature sensor is connected to one end of the reaction component. The device has the advantages of sufficient impregnation, heat utilization, efficient graded activation, reliable structure, and simplicity and practicality.

Description

Technical Field

[0001] The present invention relates to the technical field of carbon material preparation, and in particular to a preparation process and a preparation device of supercapacitor carbon. Background Art

[0002] Supercapacitor carbon is the core electrode material for supercapacitors. Its high specific surface area, excellent conductivity, wide operating temperature range, and environmentally friendly properties significantly enhance the energy density, power density, and cycle life of supercapacitors, making it a key material in new energy, transportation, industrial energy storage, and other fields. With the acceleration of localization, the cost of supercapacitor carbon will further decrease, driving the application of supercapacitors in even more fields.

[0003] The pore size distribution of supercapacitor carbon will directly affect the capacitance performance. During the preparation process of existing supercapacitor carbon, physical activation methods or chemical activation methods are adopted. However, it is difficult to accurately control the ratio of micropores, mesopores and macropores. Among them, the chemical activation method is prone to form too many micropores, resulting in increased ion transmission resistance, while the physical activation method may lead to insufficient porosity, affecting the specific surface area, and thus affecting the use effect of supercapacitor carbon.

[0004] Therefore, it is necessary to provide a preparation process and a preparation device of supercapacitor carbon to solve the above problems. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of the embodiments of the present invention is to provide a preparation process and a preparation device of supercapacitor carbon to solve the problems in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A device for preparing supercapacitor carbon includes a reaction component, which includes an outer furnace body. The two ends of the outer furnace body are respectively connected to a left cover and a right cover. An exhaust pipe is provided at the top of the outer furnace body near the left cover, and a discharge pipe is provided at the bottom of the outer furnace body near the left cover. A first electrically controlled valve is provided at the discharge pipe. A pushing component is movably provided inside the outer furnace body. The pushing component is used to push the raw materials after impregnation. A combustion furnace is provided at the bottom of the outer furnace body. The left cover is connected to the impregnation component through a material guide pipe. A physical activation component connected to the pushing component is provided on the reaction component. The physical activation component is filled with water. A temperature sensor is connected to one end of the reaction component.

[0008] As a further solution of the present invention, the pushing assembly includes a rotating drum movably arranged inside the outer furnace body, one end of the rotating drum is rotatably engaged with the left cover, and a gap is provided between the other end of the rotating drum and the right cover, an inner spiral piece is spirally provided on the inner wall of the rotating drum, and an outer spiral piece is spirally provided on the outer wall of the rotating drum that is movably engaged with the inner wall of the outer furnace body, a rotating tube is provided inside the rotating drum, and the rotating tube is connected to the inner wall of the rotating drum through several groups of axially distributed connecting modules, one end of the rotating tube passes through the right cover and is connected to a driven pulley movably arranged on the outside of the outer furnace body, a first motor is installed on the bracket close to the side of the driven pulley, the output end of the first motor is connected to the driving pulley, a transmission belt is connected between the driven pulley and the driving pulley, and a detection module is provided between the bracket and the driving pulley.

[0009] As a further solution of the present invention, the connection module includes a plurality of branch pipes circumferentially distributed on the outer wall of the rotating pipe, and the branch pipes are connected to the rotating pipe.

[0010] As a further solution of the present invention, the detection module includes a contact arranged on the outer edge of the driving pulley and a photoelectric sensor arranged on the bracket, and the rotation path of the contact is perpendicular to the detection path of the photoelectric sensor.

[0011] As a further solution of the present invention, the physical activation component includes a liquid storage tank arranged on the top of the outer furnace body, the output end of the liquid storage tank is connected to the rotating pipe through the first air duct, the output end of the liquid storage tank is provided with a fifth electric-controlled valve, and several air outlets are distributed on several branch pipes.

[0012] As a further solution of the present invention, the impregnation assembly includes an impregnation tank and a liquid storage tank, a feeding funnel is provided on the top of the impregnation tank, the bottom of the impregnation tank is connected to the outer end of the material guide tube, a rotating shaft is provided in the impregnation tank, one end of the rotating shaft is connected to a second motor installed on the top of the impregnation tank, a number of stirring rods are distributed on the rotating shaft, a second electrically-controlled valve is provided at the bottom of the impregnation tank, the liquid storage tank and the bottom of the impregnation tank are connected through a return liquid pipe, a third electrically-controlled valve is provided at one end of the return liquid pipe near the impregnation tank, the inner bottom of the liquid storage tank and the upper part of the impregnation tank are connected through a liquid inlet pipe, a fourth electrically-controlled valve is provided at one end of the liquid inlet pipe near the impregnation tank, and an air pump is provided on the liquid storage tank.

[0013] As a further solution of the present invention, the spiral direction of the inner spiral plate is opposite to that of the outer spiral plate, the two ends of the inner spiral plate respectively correspond to the two ends of the rotating drum, and the two ends of the outer spiral plate respectively correspond to the two ends of the outer furnace body.

[0014] As a further solution of the present invention, the liquid storage tank is provided with a first liquid filling port, and a first sealing plug is provided at the first liquid filling port.

[0015] As a further solution of the present invention, a second liquid filling port is provided on the liquid storage tank, and a second sealing plug is provided at the second liquid filling port.

[0016] A process for preparing supercapacitor carbon, applicable to the above-mentioned supercapacitor carbon preparation device, comprises the following steps:

[0017] Step S1, material selection and pretreatment: converting coconut shell into hard carbon by pyrolysis, followed by washing, drying, crushing and screening to obtain coconut shell particles;

[0018] Step S2, material processing: using a supercapacitor carbon preparation device to sequentially perform impregnation, carbonization, and graded activation treatments on the coconut shell particles in step S1;

[0019] Step S3, finished product processing: the material activated in step S2 is subjected to acid washing, water washing and drying to obtain a supercapacitor carbon finished product.

[0020] In summary, the embodiments of the present invention have the following beneficial effects compared with the prior art:

[0021] 1. In the present invention, the crushed carbonized raw material can be fully contacted with the KOH solution through the impregnation component, so that the KOH solution can fully penetrate into the interior of the carbonized raw material. The temperature inside the reaction component is heated to 850-950°C through the cooperation of the temperature sensor and the combustion furnace. The water inside the physical activation component is heated to generate water vapor, and the impregnated carbonized raw material is introduced into the interior of the reaction component. The heated water vapor is introduced into the reaction component. The pushing component activates the raw material by regularly pushing the impregnated raw material back and forth, which can achieve graded activation of the raw material, help to accurately control the ratio of micropores, mesopores and macropores, and facilitate to enrich the pore structure of supercapacitor carbon and improve the specific surface area and adsorption performance of supercapacitor carbon. It has the effects of full impregnation, heat utilization, efficient graded activation, reliable structure and simple and practical use.

[0022] 2. In the present invention, the first motor drives the active pulley to rotate forward, the active pulley drives the contact to rotate synchronously, and the photoelectric sensor detects the number of rotations of the contact; when the number of rotations of the contact reaches a set number, the first motor drives the active pulley to rotate reversely, and when the number of reverse rotations of the contact reaches a set value, the first motor drives the active pulley to rotate forward, thereby realizing the movement of the raw material from the end away from the right side cover to the end close to the right side cover. By regularly adjusting the forward and reverse rotation of the rotating drum, the left and right reciprocating movement of the raw material can be realized, which facilitates the full contact between the raw material and water vapor, improves the activation efficiency, and realizes the graded activation treatment of the raw material, which helps to enrich the pore structure of the supercapacitor carbon and improve the specific surface area and adsorption performance of the supercapacitor carbon.

[0023] In order to more clearly illustrate the structural features and effects of the present invention, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional diagram of the preparation device of supercapacitor carbon in the embodiment of the invention.

[0025] Figure 2 This is a cross-sectional view of a device for preparing supercapacitor carbon in an embodiment of the invention.

[0026] Figure 3 It is a schematic structural diagram of the reaction component and the pusher component in the embodiment of the invention.

[0027] Figure 4 Schematic diagram of the structure of the photoelectric sensor in the embodiment of the invention.

[0028] Figure 5 It is a schematic structural diagram of the impregnation component in an embodiment of the invention.

[0029] Figure 6 It is a cross-sectional view of the rotating drum in the embodiment of the invention.

[0030] Figure 7 It is a schematic structural diagram of the rotating tube in an embodiment of the invention.

[0031] Reference numerals: 1, reaction assembly; 101, outer furnace body; 102, exhaust pipe; 103, discharge pipe; 104, first electronically controlled valve; 105, bracket; 106, left side cover; 107, material guide pipe; 108, right side cover;

[0032] 2. Pusher assembly; 201. Rotating tube; 202. Branch tube; 203. Rotating drum; 204. Inner spiral sheet; 205. Outer spiral sheet; 206. Driven pulley; 207. Transmission belt; 208. Driving pulley; 209. First motor; 210. Contactor; 211. Photoelectric sensor;

[0033] 3. Dipping assembly; 301. Dipping tank; 302. Feeding funnel; 303. Second motor; 304. Rotating shaft; 305. Stirring rod; 306. Second electrically controlled valve; 307. Liquid storage tank; 308. Liquid return pipe; 3081. Third electrically controlled valve; 309. Liquid inlet pipe; 3091. Fourth electrically controlled valve; 310. Air pump;

[0034] 4. Physical activation component; 401. Liquid storage tank; 402. Fifth electronically controlled valve; 403. First air guide tube; 404. Air outlet;

[0035] 5. Temperature sensor;

[0036] 6. Combustion furnace. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0038] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0039] In one embodiment of the present invention, see Figure 1-Figure 3 , a preparation device for supercapacitor carbon, including a reaction component 1, wherein the reaction component 1 includes an outer furnace body 101, and the two ends of the outer furnace body 101 are respectively connected to the left cover 106 and the right cover 108, an exhaust pipe 102 is provided at the top of the end of the outer furnace body 101 close to the left cover 106, and a discharge pipe 103 is provided at the bottom of the end of the outer furnace body 101 close to the left cover 106, and a first electric-controlled valve 104 is provided at the discharge pipe 103, and a pusher component 2 is movably provided inside the outer furnace body 101, and the pusher component 2 is used to push the raw materials after impregnation, a combustion furnace 6 is provided at the bottom of the outer furnace body 101, and the left cover 106 is connected to the impregnation component 3 through a guide pipe 107, a physical activation component 4 connected to the pusher component 2 is provided on the reaction component 1, and the physical activation component 4 is filled with water, and a temperature sensor 5 is connected to one end of the reaction component 1.

[0040] In this embodiment, in this application, the raw material is set as coconut shell. Through the impregnation component 3, the crushed carbonized raw material can be fully contacted with the KOH solution, so that the KOH solution fully penetrates into the carbonized raw material. Through the cooperation of the temperature sensor 5 and the combustion furnace 6, the temperature inside the reaction component 1 is heated to 850-950°C, and the water inside the physical activation component 4 is heated to generate water vapor. The impregnated carbonized raw material is introduced into the interior of the reaction component 1, and the heated water vapor is introduced into the reaction component 1. The pushing component 2 activates the raw material by regularly reciprocating the impregnated raw material, which can achieve graded activation of the raw material, help to accurately control the ratio of micropores, mesopores and macropores, and facilitate to enrich the pore structure of supercapacitor carbon and improve the specific surface area and adsorption performance of supercapacitor carbon, with full impregnation, heat utilization, efficient graded activation, reliable structure and simple and practical effects;

[0041] Two brackets 105 are provided at the bottom of both ends of the outer furnace body 101 , and the device can be stably supported by the two brackets 105 .

[0042] In one embodiment of the present invention, see Figure 1-Figure 7The pushing assembly 2 includes a rotating drum 203 movably arranged inside the outer furnace body 101, one end of the rotating drum 203 is rotatably matched with the left cover 106, and a gap is set between the other end of the rotating drum 203 and the right cover 108. An inner spiral piece 204 is spirally arranged on the inner side wall of the rotating drum 203, and an outer spiral piece 205 is spirally arranged on the outer side wall of the rotating drum 203 and movably fitted with the inner wall of the outer furnace body 101. A rotating tube 201 is provided inside the rotating drum 203, and the rotating tube 201 is connected to the inner wall of the rotating drum 203 through several groups of connecting modules distributed axially. The module includes several branch pipes 202 circumferentially distributed on the outer wall of the rotating tube 201. The branch pipes 202 are connected to the rotating tube 201. One end of the rotating tube 201 passes through the right cover 108 and is connected to a driven pulley 206 movably arranged on the outside of the outer furnace body 101. A first motor 209 is installed on the bracket 105 near the side of the driven pulley 206. The output end of the first motor 209 is connected to the driving pulley 208. A transmission belt 207 is connected between the driven pulley 206 and the driving pulley 208. A detection module is provided between the bracket 105 and the driving pulley 208.

[0043] The detection module includes a contact 210 provided on the outer edge of the driving pulley 208 and a photoelectric sensor 211 provided on the bracket 105. The rotation path of the contact 210 is perpendicular to the detection path of the photoelectric sensor 211.

[0044] The physical activation component 4 includes a liquid storage tank 401 arranged on the top of the outer furnace body 101. The output end of the liquid storage tank 401 is connected to the rotating tube 201 through the first air duct 403. The output end of the liquid storage tank 401 is provided with a fifth electrically controlled valve 402, and several air outlet holes 404 are distributed on several of the branch pipes 202.

[0045] In this embodiment, when the impregnated raw materials are introduced into the inner end of the drum 203 through the left cover 106, the first motor 209 drives the active pulley 208 to rotate forward, and the active pulley 208 is connected to the driven pulley 206 through the transmission belt 207 to drive the rotating tube 201 to rotate synchronously, and the rotating tube 201 drives the drum 203 to rotate forward synchronously by connecting with the branch pipe 202, and the drum 203 drives the inner spiral piece 204 to rotate synchronously to introduce the raw materials into the drum 203. The impregnated raw materials inside 03 move to the right, and the water in the liquid storage tank 401 is heated and converted into water vapor. Through the cooperation of the fifth electrically controlled valve 402 and the first air guide pipe 403, water vapor can be introduced into the interior of the rotating tube 201 at a rate of 0.1-1.0 L / (g·min). The water vapor is introduced into the rotating drum 203 through the branch pipe 202 and the air outlet 404, so that the impregnated raw materials come into contact with the water vapor. The gas inside the outer furnace body 101 is discharged through the exhaust pipe 102.

[0046] At the same time, the active pulley 208 drives the contact 210 to rotate synchronously, and the photoelectric sensor 211 detects the number of rotations of the contact 210; when the number of rotations of the contact 210 reaches the set number, the first motor 209 drives the active pulley 208 to rotate in the opposite direction, and the active pulley 208 drives the rotating tube 201 to rotate synchronously by connecting with the driven pulley 206 through the transmission belt 207, and the rotating tube 201 drives the rotating drum 203 to rotate synchronously in the forward direction by connecting with the branch pipe 202, and the rotating drum 203 drives the impregnated raw materials introduced into the rotating drum 203 to the left by driving the inner spiral piece 204 to rotate synchronously. The first motor 209 drives the driving pulley 208 to rotate forward, thereby realizing the movement of the raw material from the end close to the right cover 108 to the end away from the right cover 108. When the number of reverse rotations of the contact 210 reaches a set value, the first motor 209 drives the driving pulley 208 to rotate forward, thereby realizing the movement of the raw material from the end away from the right cover 108 to the end close to the right cover 108. By regularly adjusting the forward and reverse rotation of the rotating drum 203, the left and right reciprocating movement of the raw material can be realized, which facilitates the full contact between the raw material and the water vapor, improves the activation efficiency, realizes the graded activation treatment of the raw material, and helps to enrich the pore structure of the supercapacitor carbon and improve the specific surface area and adsorption performance of the supercapacitor carbon.

[0047] When the raw material activation treatment is completed, the fifth electric control valve 402 is closed to prevent the water vapor in the liquid storage tank 401 from flowing into the outer furnace body 101, and the first motor 209 drives the active pulley 208 to rotate forward. The active pulley 208 drives the rotating tube 201 to rotate synchronously by connecting with the driven pulley 206 through the transmission belt 207. The rotating tube 201 drives the rotating drum 203 to rotate synchronously in the forward direction by connecting with the branch pipe 202. The rotating drum 203 drives the impregnated raw materials introduced into the rotating drum 203 to the right by driving the inner spiral sheet 204 to rotate synchronously. As the rotating drum 203 is arranged inside the outer furnace body 101, the activated raw materials move to the right and fall to the right end of the outer furnace body 101. The rotating drum 203 moves the activated raw materials located at the right end of the outer furnace body 101 to the left end of the outer furnace body 101 by driving the outer spiral piece 205 to rotate synchronously. The first electrically controlled valve 104 is opened, and the discharge pipe 103 is in a conducting state. The activated raw materials are discharged through the discharge pipe 103, which facilitates the subsequent processing of the activated raw materials. During this process, the photoelectric sensor 211 does not detect the number of rotations of the contact 210.

[0048] Among them, the spiral direction of the inner spiral plate 204 is opposite to the spiral direction of the outer spiral plate 205, the two ends of the inner spiral plate 204 respectively correspond to the two ends of the rotating drum 203, and the two ends of the outer spiral plate 205 respectively correspond to the two ends of the outer furnace body 101, which can ensure that the raw materials in the rotating drum 203 are moved to the right end of the outer furnace body 101, and then the raw materials are pushed from the right end of the outer furnace body 101 to the left end of the outer furnace body 101. A first liquid filling port is provided on the liquid storage tank 401, and a first sealing plug is provided at the first liquid filling port.

[0049] In one embodiment of the present invention, see Figure 1-Figure 2 and Figure 5 The dipping assembly 3 includes a dipping tank 301 and a liquid storage tank 307. A feeding funnel 302 is provided on the top of the dipping tank 301. The bottom of the dipping tank 301 is connected to the outer end of the guide tube 107. A rotating shaft 304 is provided in the dipping tank 301. One end of the rotating shaft 304 is connected to a second motor 303 installed on the top of the dipping tank 301. A plurality of stirring rods 305 are distributed on the rotating shaft 304. The bottom of the dipping tank 301 is provided with a Two electrically controlled valves 306 are provided. The liquid storage tank 307 and the bottom of the immersion tank 301 are connected via a liquid return pipe 308. A third electrically controlled valve 3081 is provided at one end of the liquid return pipe 308 close to the immersion tank 301. The inner bottom of the liquid storage tank 307 and the upper part of the immersion tank 301 are connected via a liquid inlet pipe 309. A fourth electrically controlled valve 3091 is provided at one end of the liquid inlet pipe 309 close to the immersion tank 301. An air pump 310 is provided on the liquid storage tank 307.

[0050] In this embodiment, in the initial state, the second electrically controlled valve 306 is in a closed state, and the third electrically controlled valve 3081 is in a closed state. The crushed raw material is introduced into the impregnation tank 301 through the feeding funnel 302. The fourth electrically controlled valve 3091 is opened, and the air pump 310 presses the KOH solution in the liquid storage tank 307 into the impregnation tank 301 through the liquid inlet pipe 309 to impregnate the crushed raw material with the KOH solution. The second motor 303 drives the rotating shaft 304 to rotate. The rotating shaft 304 drives the stirring rod 305 to rotate to stir the raw material and KOH solution in the corresponding proportion, so that the KOH fully penetrates into the raw material, facilitating the subsequent activation of the raw material.

[0051] When the raw material is impregnated, the fourth electrically controlled valve 3091 is closed and the third electrically controlled valve 3081 is opened. The air pump 310 introduces the residual KOH solution in the impregnation tank 301 into the liquid storage tank 307 through the return pipe 308. Then, the third electrically controlled valve 3081 is closed and the second electrically controlled valve 306 is opened. The second motor 303 rotates the stirring rod 305 by driving the rotating shaft 304 to rotate. The impregnated raw material can be introduced into the rotating drum 203 through the material guide pipe 107, facilitating subsequent processing of the impregnated raw material.

[0052] The liquid storage tank 307 is provided with a second liquid injection port, and a second sealing plug is provided at the second liquid injection port.

[0053] In one embodiment of the present invention, see Figure 1-Figure 7 A process for preparing supercapacitor carbon, applicable to the above-mentioned supercapacitor carbon preparation device, comprises the following steps:

[0054] Step S1, material selection and pretreatment: converting coconut shell into hard carbon by pyrolysis, followed by washing, drying, crushing and screening to obtain coconut shell particles;

[0055] Step S2, material processing: using a supercapacitor carbon preparation device to sequentially perform impregnation, carbonization, and graded activation treatments on the coconut shell particles in step S1;

[0056] Step S3, finished product processing: the material activated in step S2 is subjected to acid washing, water washing and drying to obtain a supercapacitor carbon finished product.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A supercapacitor carbon preparation device, comprising a reaction assembly, characterized in that: The reaction assembly includes an outer furnace body, the two ends of the outer furnace body are respectively connected to the left cover and the right cover, an exhaust pipe is provided at the top of the end of the outer furnace body close to the left cover, a discharge pipe is provided at the bottom of the end of the outer furnace body close to the left cover, a first electrically controlled valve is provided at the discharge pipe, a pusher assembly is movably provided inside the outer furnace body, the pusher assembly is used to push the raw materials after impregnation, a combustion furnace is provided at the bottom of the outer furnace body, the left cover is connected to the impregnation assembly through a material guide pipe, a physical activation assembly connected to the pusher assembly is provided on the reaction assembly, the physical activation assembly is filled with water, and a temperature sensor is connected to one end of the reaction assembly; The pushing assembly includes a rotating drum movably arranged inside the outer furnace body, one end of the rotating drum is rotatably matched with the left cover, and a gap is provided between the other end of the rotating drum and the right cover, an inner spiral piece is spirally provided on the inner wall of the rotating drum, and an outer spiral piece is spirally provided on the outer wall of the rotating drum that is movably fitted with the inner wall of the outer furnace body, a rotating tube is provided inside the rotating drum, and the rotating tube is connected to the inner wall of the rotating drum through several groups of axially distributed connecting modules, one end of the rotating tube passes through the right cover and is connected to a driven pulley movably arranged on the outside of the outer furnace body, a first motor is installed on the bracket near the side of the driven pulley, the output end of the first motor is connected to the driving pulley, a transmission belt is connected between the driven pulley and the driving pulley, and a detection module is provided between the bracket and the driving pulley; The dipping assembly includes a dipping tank and a liquid storage tank, a feeding funnel is provided on the top of the dipping tank, the bottom of the dipping tank is connected to the outer end of the material guide pipe, a rotating shaft is provided in the dipping tank, one end of the rotating shaft is connected to a second motor installed on the top of the dipping tank, a plurality of stirring rods are distributed on the rotating shaft, a second electrically-controlled valve is provided at the bottom of the dipping tank, the liquid storage tank and the bottom of the dipping tank are connected through a return liquid pipe, a third electrically-controlled valve is provided at one end of the return liquid pipe close to the dipping tank, the inner bottom of the liquid storage tank and the upper part of the dipping tank are connected through a liquid inlet pipe, a fourth electrically-controlled valve is provided at one end of the liquid inlet pipe close to the dipping tank, and an air pump is provided on the liquid storage tank.

2. The supercapacitor carbon preparation device according to claim 1, characterized in that: The connection module includes a plurality of branch pipes circumferentially distributed on the outer wall of the rotating pipe, and the branch pipes are connected with the rotating pipe.

3. The supercapacitor carbon preparation device according to claim 1, characterized in that: The detection module comprises a contact arranged on the outer edge of the driving pulley and a photoelectric sensor arranged on the bracket, and the rotation path of the contact is perpendicular to the detection path of the photoelectric sensor.

4. The supercapacitor carbon preparation device according to claim 1, characterized in that: The physical activation component includes a liquid storage tank arranged on the top of the outer furnace body. The output end of the liquid storage tank is connected to the rotating pipe through the first air guide pipe. The output end of the liquid storage tank is provided with a fifth electrically controlled valve, and several air outlets are distributed on several branch pipes.

5. The device for preparing supercapacitor carbon according to claim 1, characterized in that: The spiral direction of the inner spiral plate is opposite to that of the outer spiral plate. The two ends of the inner spiral plate correspond to the two ends of the rotating drum respectively, and the two ends of the outer spiral plate correspond to the two ends of the outer furnace body respectively.

6. The supercapacitor carbon preparation device according to claim 4, characterized in that: The liquid storage box is provided with a first liquid filling port, and a first sealing plug is provided at the first liquid filling port.

7. The supercapacitor carbon preparation device according to claim 1, characterized in that: The liquid storage tank is provided with a second liquid injection port, and a second sealing plug is provided at the second liquid injection port.

8. A process for preparing supercapacitor carbon, applicable to the supercapacitor carbon preparation device according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step S1, material selection and pretreatment: converting coconut shell into hard carbon by pyrolysis, followed by washing, drying, crushing and screening to obtain coconut shell particles; Step S2, material processing: using a supercapacitor carbon preparation device to sequentially perform impregnation, carbonization, and graded activation treatments on the coconut shell particles in step S1; Step S3, finished product processing: the material activated in step S2 is subjected to acid washing, water washing and drying to obtain a supercapacitor carbon finished product.

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