Pre-activation rotary kiln reactor and method for producing capacitor carbon material

Abstract

The invention belongs to the technical field of capacitance carbon materials, and discloses a pre-activation rotary kiln reactor and method for producing capacitance carbon materials, the pre-activation rotary kiln reactor comprises a furnace tube body, a cylindrical inner component is arranged in an inner cavity of the furnace tube body, and the length of the cylindrical inner component is not larger than that of the inner cavity of the furnace tube body; the diameter of the cylindrical inner component is smaller than the inner diameter of the furnace tube body, and the furnace tube body is parallel to the axis of the cylindrical inner component. The pre-activation rotary kiln reactor provided by the invention has a unique furnace tube structure, and can realize the effect of applying shear force to materials in the reaction process. And residual moisture of the raw material and KOH is completely discharged, so that the situation that the moisture reacts with KOH to generate potassium elementary substances in the subsequent activation process to threaten operation safety is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of capacitor carbon materials, and in particular relates to a pre-activation rotary kiln reactor and a method for producing capacitor carbon materials. Background Art

[0002] Capacitor carbon is the core material of supercapacitors, and its performance determines the power performance, capacity performance and cycle stability of supercapacitors. Activation is a key step in the production of capacitor carbon materials, which directly affects the quality of the final product. At present, the activation method of capacitor carbon materials is mainly a one-step activation, that is, the raw materials and the alkaline activator are mixed in a certain proportion and directly heated to the activation temperature, and the sample is cooled and taken out after a certain reaction time. This method will produce a large amount of potassium vapor during the high-temperature reaction process, and the agglomerated alkali blocks will stick to the inner tank of the reactor to cause alkali explosion, which poses an extremely high safety risk. Summary of the invention

[0003] To solve this problem, the present invention proposes a pre-activation rotary kiln reactor and method for producing capacitor carbon materials. The present invention can activate the raw materials of capacitor carbon materials and an alkaline activator, discharge residual moisture in the raw materials and allow KOH to be physically adsorbed by the pores of the raw materials, thereby solving the safety problems existing in high-temperature activation.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows: A pre-activation rotary kiln reactor for producing capacitor carbon materials comprises a furnace tube body, wherein the inner cavity of the furnace tube body is provided with a cylindrical inner component, the length of the cylindrical inner component is not greater than the inner cavity length of the furnace tube body, the diameter of the cylindrical inner component is smaller than the inner diameter of the furnace tube body, and the axes of the furnace tube body and the cylindrical inner component are parallel.

[0005] Preferably, the furnace tube body is arranged tilted.

[0006] Preferably, the angle between the axis of the furnace tube body and the horizontal plane is 10° to 35°.

[0007] Preferably, both ends of the furnace tube body are provided with limiting baffles for axially limiting the cylindrical inner component.

[0008] Preferably, the inner wall of the furnace tube body is a smooth surface, and the surface of the cylindrical inner component is smooth.

[0009] Preferably, the furnace tube body is made of nickel alloy.

[0010] Preferably, the cylindrical inner component is made of nickel alloy.

[0011] Preferably, the ratio of the diameter of the cylindrical inner component to the inner diameter of the furnace tube body is 1:(1.5-4).

[0012] The present invention also provides a preactivation method for producing capacitor carbon materials, which is carried out using the preactivation rotary kiln reactor for producing capacitor carbon materials as described above, and the method comprises: A mixture of raw materials of capacitor carbon material and potassium hydroxide is added into a furnace tube body for heat treatment. During the heat treatment, the furnace tube body rotates, the cylindrical inner component rotates and the mixture of raw materials of capacitor carbon material and KOH is rolled and heated to remove moisture from the raw materials of capacitor carbon material and pre-activate potassium hydroxide.

[0013] Preferably, the heat treatment temperature is 400-600 degrees Celsius, the rotation speed of the furnace tube body is controlled at 2-5 revolutions per minute, and the heat treatment time is controlled at 90-120 minutes.

[0014] The present invention has the following beneficial effects: The present invention is used in a pre-activation rotary kiln reactor for producing capacitor carbon materials. By arranging a cylindrical internal component in the inner cavity of a furnace tube body, the cylindrical internal component will also roll in the inner cavity of the furnace tube body during the rotation of the furnace tube body. During the rolling of the cylindrical internal component, the material can be mechanically squeezed, which is beneficial to the release of water in the material. Since the diameter of the cylindrical internal component is smaller than the inner diameter of the furnace tube body, the rotation speeds of the cylindrical internal component and the furnace tube body are different. Therefore, a shear force can be applied to the material between the cylindrical internal component and the furnace tube body, which is further beneficial to the release of water in the pores of the material. Since the water in the material is released and KOH is physically adsorbed by the pores of the raw material, it is avoided that the water reacts with KOH in the subsequent activation process to generate potassium elemental substance, which threatens the operation safety, and solves the safety problem of high-temperature activation. At the same time, since the cylindrical internal component itself can also absorb heat, the cylindrical internal component can also be used as a heat storage body. During the rolling process of the material, the material can be heated, and the removal of water in the material can be accelerated. In summary, it can be seen that the present invention can activate the raw materials of capacitor carbon materials and the alkaline activator, discharge the residual moisture in the raw materials and allow KOH to be physically adsorbed by the pores of the raw materials, thereby solving the safety problem of high-temperature activation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 It is a radial structural schematic diagram of a pre-activation rotary kiln reactor for producing capacitor carbon materials according to the present invention; Figure 2This is a photo of the pre-activated product obtained in the example of the present invention.

[0017] In the figure, 1 is the furnace tube body; 2 is the cylindrical internal component. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can usually be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0019] The present invention makes the following improvements to the safety issues of the traditional one-step activation method: 1. A new rotary kiln reactor was invented. The reactor has a unique furnace tube structure, which can achieve the effect of applying shear force to the material during the reaction process. The residual moisture of the raw materials and KOH is completely discharged, avoiding the subsequent activation process where the moisture reacts with KOH to generate potassium element, which threatens the operation safety; 2. A pre-activation process was invented, which has been proven to form a stable mixed system of KOH and raw carbon powder, laying the foundation for subsequent activation.

[0020] Example 1 For details, see Figure 1 The present embodiment is a pre-activation rotary kiln reactor for producing capacitor carbon materials, comprising a furnace tube body 1, wherein the inner cavity of the furnace tube body 1 is provided with a cylindrical inner component 2, wherein the length of the cylindrical inner component 2 is not greater than the inner cavity length of the furnace tube body 1, the diameter of the cylindrical inner component 2 is smaller than the inner diameter of the furnace tube body 1, and the axes of the furnace tube body 1 and the cylindrical inner component 2 are parallel.

[0021] The design principle of the pre-activation rotary kiln reactor of the present invention is as follows: when the furnace tube body 1 rotates, the cylindrical weight (i.e., the cylindrical inner member 2) will move relative to the furnace tube, generating a certain shear force on the raw material. This shear force can be used to evenly mix the material and discharge the residual moisture in the material, thereby preventing the moisture from reducing KOH at high temperature to produce potassium element in the subsequent activation reaction, which would cause safety risks.

[0022] The process of preactivating the capacitor carbon material using the rotary kiln reactor of the present invention is as follows: A mixture of raw materials of capacitor carbon material and potassium hydroxide is added to the furnace tube body 1 for heat treatment. During the heat treatment, the furnace tube body 1 rotates, and the cylindrical inner member 2 rotates and rolls and heats the mixture of raw materials of capacitor carbon material and KOH to remove moisture from the raw materials of capacitor carbon material and pre-activate potassium hydroxide. The heat treatment temperature is 400-600 degrees Celsius, the rotation speed of the furnace tube body 1 is controlled at 2-5 revolutions per minute, and the heat treatment time is controlled at 90-120 minutes.

[0023] Example 2 As a preferred embodiment of the present invention, the pre-activation rotary kiln reactor for producing capacitor carbon materials in this embodiment comprises a furnace tube body 1, wherein the inner cavity of the furnace tube body 1 is provided with a cylindrical inner member 2, wherein the length of the cylindrical inner member 2 is not greater than the inner cavity length of the furnace tube body 1, the diameter of the cylindrical inner member 2 is smaller than the inner diameter of the furnace tube body 1, and the axes of the furnace tube body 1 and the cylindrical inner member 2 are parallel. The furnace tube body 1 is tilted, i.e., one end of the furnace tube body 1 is high and the other end is relatively low, which is helpful for discharging materials.

[0024] Example 3 The pre-activation rotary kiln reactor for producing capacitor carbon materials in this embodiment comprises a furnace tube body 1, wherein the inner cavity of the furnace tube body 1 is provided with a cylindrical inner component 2, wherein the length of the cylindrical inner component 2 is not greater than the inner cavity length of the furnace tube body 1, the diameter of the cylindrical inner component 2 is smaller than the inner diameter of the furnace tube body 1, and the axes of the furnace tube body 1 and the cylindrical inner component 2 are parallel. The angle between the axis of the furnace tube body 1 and the horizontal plane is 10° to 35°.

[0025] Example 4 The present embodiment is used for producing a pre-activated rotary kiln reactor of capacitor carbon materials, comprising a furnace tube body 1, wherein the inner cavity of the furnace tube body 1 is provided with a cylindrical inner member 2, wherein the length of the cylindrical inner member 2 is not greater than the inner cavity length of the furnace tube body 1, the diameter of the cylindrical inner member 2 is smaller than the inner diameter of the furnace tube body 1, and the axes of the furnace tube body 1 and the cylindrical inner member 2 are parallel. The furnace tube body 1 is configured to be able to be angled within the range of 0° to 35°, and the specific method may be that a rotating frame is provided at both ends of the furnace tube body 1, through which the rotating frame can be rotated around its axis, and a fixed hinge support is provided at the bottom of one of the rotating frames, and the end of the furnace tube body 1 can be rotated around the fixed hinge support; a telescopic device is provided at the bottom of the rotating frame at the other end of the furnace tube body 1, and the telescopic device can drive the rotating frame at this end to rise or fall as a whole, thereby raising or lowering the end of the furnace tube body 1, thereby realizing the furnace tube body 1 being tilted at any angle. The specific structure is not limited in detail in the present invention, and those skilled in the art can make specific designs according to needs). If there is a lot of material and the required activation time is long, the furnace tube body 1 can be laid flat (i.e., 0°) and rotated to ensure the stability of the movement of the cylindrical inner component 2 during the rotation process. When the material is small or unloading is required, the telescopic device can be controlled to extend and the end of the furnace tube body 1 can be lifted, so that the tube body 1 is tilted to a preset angle, at which the material can be pre-protected or unloaded.

[0026] Example 5 As a preferred embodiment of the present invention, the present embodiment is a pre-activated rotary kiln reactor for producing capacitor carbon materials, comprising a furnace tube body 1, wherein the inner cavity of the furnace tube body 1 is provided with a cylindrical inner member 2, wherein the length of the cylindrical inner member 2 is not greater than the inner cavity length of the furnace tube body 1, and the diameter of the cylindrical inner member 2 is smaller than the inner diameter of the furnace tube body 1, and the axes of the furnace tube body 1 and the cylindrical inner member 2 are parallel. Wherein, both ends of the furnace tube body 1 are provided with limit baffles for axially limiting the cylindrical inner member 2. By setting the limit baffles, it is possible to avoid the situation where the material is unevenly distributed in the furnace tube body 1, resulting in different rotation speeds at both ends of the cylindrical inner member 2, and thus being unable to be maintained in the inner cavity of the furnace tube body 1. The use of the limit baffles can limit the inner cavity of the furnace tube body 1 by the cylindrical inner member 2, which contributes to the integrity and safety of the entire device.

[0027] Example 6 As a preferred embodiment of the present invention, the present embodiment is a pre-activated rotary kiln reactor for producing capacitor carbon materials, comprising a furnace tube body 1, wherein the inner cavity of the furnace tube body 1 is provided with a cylindrical inner member 2, wherein the length of the cylindrical inner member 2 is not greater than the inner cavity length of the furnace tube body 1, the diameter of the cylindrical inner member 2 is smaller than the inner diameter of the furnace tube body 1, and the axes of the furnace tube body 1 and the cylindrical inner member 2 are parallel. Among them, the inner wall of the furnace tube body 1 is set to a smooth surface, and the surface of the cylindrical inner member 2 is smooth. The smooth surfaces of the furnace tube body 1 and the cylindrical inner member 2 can make all materials turn over together with the rotation of the furnace tube body 1 and the cylindrical inner member 2 during the heat treatment process, thereby accelerating the removal of moisture from the materials.

[0028] Example 7 As a preferred embodiment of the present invention, this embodiment is used for producing a pre-activated rotary kiln reactor of capacitor carbon materials, comprising a furnace tube body 1, wherein the inner cavity of the furnace tube body 1 is provided with a cylindrical inner component 2, wherein the length of the cylindrical inner component 2 is not greater than the inner cavity length of the furnace tube body 1, the diameter of the cylindrical inner component 2 is smaller than the inner diameter of the furnace tube body 1, and the axes of the furnace tube body 1 and the cylindrical inner component 2 are parallel. Among them, the furnace tube body 1 is made of nickel alloy. The cylindrical inner component 2 is made of nickel alloy. Nickel alloy material has good corrosion resistance, thermal conductivity and high temperature resistance. At the same time, the cylindrical inner component 2 is made of nickel alloy, which is conducive to its heat storage, thereby accelerating the removal of moisture from the material.

[0029] Example 8 As a preferred embodiment of the present invention, the present embodiment is used for producing a pre-activated rotary kiln reactor of a capacitor carbon material, comprising a furnace tube body 1, wherein the inner cavity of the furnace tube body 1 is provided with a cylindrical inner member 2, wherein the length of the cylindrical inner member 2 is not greater than the inner cavity length of the furnace tube body 1, the diameter of the cylindrical inner member 2 is less than the inner diameter of the furnace tube body 1, and the axes of the furnace tube body 1 and the cylindrical inner member 2 are parallel. Among them, the ratio of the diameter of the cylindrical inner member 2 to the inner diameter of the furnace tube body 1 is 1: (1.5~4). The larger the size of the internal member, the more conducive it is to quickly remove the moisture in the potassium hydroxide and solidify the molten alkali in the pore structure of the carbon material; however, an excessively large internal member will cause the rotary kiln to vibrate more and reduce the operating stability of the equipment. Therefore, the preferred ratio is between 1: (1.5~4).

[0030] Example 9 As a preferred embodiment of the present invention, the pre-activation rotary kiln reactor for producing capacitor carbon materials in this embodiment comprises a furnace tube body 1, wherein the inner cavity of the furnace tube body 1 is provided with a cylindrical inner member 2, wherein the length of the cylindrical inner member 2 is not greater than the inner cavity length of the furnace tube body 1, and the diameter of the cylindrical inner member 2 is smaller than the inner diameter of the furnace tube body 1, and the axes of the furnace tube body 1 and the cylindrical inner member 2 are parallel. Wherein, a kiln head and a kiln tail are sealed at both ends of the furnace tube body 1. Wherein, a burner is provided at the kiln head.

[0031] Example 10 As a preferred embodiment of the present invention, the pre-activation rotary kiln reactor for producing capacitor carbon materials in this embodiment comprises a furnace tube body 1, wherein the inner cavity of the furnace tube body 1 is provided with a cylindrical inner member 2, wherein the length of the cylindrical inner member 2 is not greater than the inner cavity length of the furnace tube body 1, and the diameter of the cylindrical inner member 2 is smaller than the inner diameter of the furnace tube body 1, and the axes of the furnace tube body 1 and the cylindrical inner member 2 are parallel. Wherein, a kiln head and a kiln tail are sealed at both ends of the furnace tube body 1. Wherein, a burner is provided at the kiln head, and the burner adopts one or both of a pulverized coal burner and a natural gas burner.

[0032] Embodiment 11 As a preferred embodiment of the present invention, the present embodiment is a pre-activated rotary kiln reactor for producing capacitor carbon materials, comprising a furnace tube body 1, wherein the inner cavity of the furnace tube body 1 is provided with a cylindrical inner member 2, wherein the length of the cylindrical inner member 2 is not greater than the inner cavity length of the furnace tube body 1, the diameter of the cylindrical inner member 2 is smaller than the inner diameter of the furnace tube body 1, and the axes of the furnace tube body 1 and the cylindrical inner member 2 are parallel. Among them, the outer portion of the furnace tube body 1 is provided with a heat preservation layer, and the heat radiated outward by the furnace tube body 1 can be reduced by the heat preservation layer.

[0033] Example 12 As a preferred embodiment of the present invention, the pre-activation rotary kiln reactor for producing capacitor carbon materials in this embodiment comprises a furnace tube body 1, wherein the inner cavity of the furnace tube body 1 is provided with a cylindrical inner member 2, wherein the length of the cylindrical inner member 2 is not greater than the inner cavity length of the furnace tube body 1, the diameter of the cylindrical inner member 2 is smaller than the inner diameter of the furnace tube body 1, and the axes of the furnace tube body 1 and the cylindrical inner member 2 are parallel. The outer portion of the furnace tube body 1 is provided with a heat-insulating layer, wherein the heat-insulating layer is made of rock wool or mineral wool.

[0034] Embodiment 13 As a preferred embodiment of the present invention, the pre-activation rotary kiln reactor for producing capacitor carbon materials in this embodiment comprises a furnace tube body 1, wherein the inner cavity of the furnace tube body 1 is provided with a cylindrical inner member 2, wherein the length of the cylindrical inner member 2 is not greater than the inner cavity length of the furnace tube body 1, the diameter of the cylindrical inner member 2 is smaller than the inner diameter of the furnace tube body 1, and the axes of the furnace tube body 1 and the cylindrical inner member 2 are parallel. The material of the furnace tube body 1 can be a long cylindrical barrel formed by rolling and welding steel plates.

[0035] Embodiment 14 As a preferred embodiment of the present invention, the present embodiment is a pre-activated rotary kiln reactor for producing capacitor carbon materials, comprising a furnace tube body 1, wherein the inner cavity of the furnace tube body 1 is provided with a cylindrical inner member 2, wherein the length of the cylindrical inner member 2 is not greater than the inner cavity length of the furnace tube body 1, the diameter of the cylindrical inner member 2 is smaller than the inner diameter of the furnace tube body 1, and the axes of the furnace tube body 1 and the cylindrical inner member 2 are parallel. Dust removal systems are provided at both ends of the furnace tube body 1, and dust generated during feeding or discharging can be collected by the dust removal system to meet environmental protection standards.

[0036] Embodiment 15 As a preferred embodiment of the present invention, the pre-activation rotary kiln reactor for producing capacitor carbon materials in this embodiment comprises a furnace tube body 1, wherein the inner cavity of the furnace tube body 1 is provided with a cylindrical inner member 2, wherein the length of the cylindrical inner member 2 is not greater than the inner cavity length of the furnace tube body 1, the diameter of the cylindrical inner member 2 is smaller than the inner diameter of the furnace tube body 1, and the axes of the furnace tube body 1 and the cylindrical inner member 2 are parallel. Dust removal systems are provided at both ends of the furnace tube body 1, wherein the dust removal system may adopt an electrostatic precipitator or a bag dust collector.

[0037] Example 16 As a preferred embodiment of the present invention, the present embodiment is a pre-activation rotary kiln reactor for producing capacitor carbon materials, comprising a furnace tube body 1, wherein the inner cavity of the furnace tube body 1 is provided with a cylindrical inner member 2, wherein the length of the cylindrical inner member 2 is not greater than the inner cavity length of the furnace tube body 1, the diameter of the cylindrical inner member 2 is smaller than the inner diameter of the furnace tube body 1, and the axes of the furnace tube body 1 and the cylindrical inner member 2 are parallel. Among them, the furnace tube body 1 is arranged obliquely, and an exhaust valve and an exhaust valve are provided at the higher end of the furnace tube body 1, wherein the exhaust valve is used to discharge the waste gas and water vapor generated during the pre-activation process, and the air inlet valve can be used to introduce a protective atmosphere into the furnace tube body 1, wherein the protective atmosphere can be nitrogen, helium, etc. When the protective atmosphere is introduced through the air inlet valve, the exhaust valve is opened to remove the original atmosphere in the furnace tube body 1.

[0038] Embodiment 17 The pre-activation method for producing capacitor carbon material in this embodiment includes the following steps: A mixture of the raw material of the capacitor carbon material and potassium hydroxide is added to the furnace tube body 1 for heat treatment. During the heat treatment process, the heat treatment temperature is 500 degrees Celsius, the furnace tube body 1 rotates at a speed of 2 rpm, and the cylindrical inner component 2 rotates and rolls and heats the mixture of the raw material of the capacitor carbon material and KOH to remove moisture from the raw material of the capacitor carbon material and pre-activate the potassium hydroxide; the entire heat treatment time is controlled within 100 minutes.

[0039] See also Figure 2 The preactivated product obtained in this example presents uniform black-gray particles with a particle size of 2-5 mm, and no macroscopic potassium hydroxide powder or flakes. The product can be stably stored in an air environment, and has no obvious water absorption during a period of 100 days. The water content of the fresh product after preactivation is less than 0.1% as measured by a rapid coulometric water meter, and is still less than 1% after 100 days.

[0040] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work, as well as any combination of two or more of the above embodiments of the present invention, should fall within the scope of protection of the present invention.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present invention can still be modified or replaced by equivalents, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention should be included in the scope of the present invention.

Claims

1. A pre-activation rotary kiln reactor for producing capacitor carbon materials, characterized in that: The invention comprises a furnace tube body (1), wherein the inner cavity of the furnace tube body (1) is provided with a cylindrical inner component (2), the length of the cylindrical inner component (2) is not greater than the inner cavity length of the furnace tube body (1), the diameter of the cylindrical inner component (2) is smaller than the inner diameter of the furnace tube body (1), and the axes of the furnace tube body (1) and the cylindrical inner component (2) are parallel.

2. A pre-activation rotary kiln reactor for producing capacitor carbon materials according to claim 1, characterized in that: The furnace tube body (1) is arranged to be inclined.

3. A pre-activation rotary kiln reactor for producing capacitor carbon materials according to claim 2, characterized in that: The angle between the axis of the furnace tube body (1) and the horizontal plane is 10° to 35°.

4. A pre-activation rotary kiln reactor for producing capacitor carbon materials according to claim 1, characterized in that: Limit baffles for axially limiting the cylindrical inner component (2) are provided at both ends of the furnace tube body (1).

5. The pre-activation rotary kiln reactor for producing capacitor carbon materials according to claim 1, characterized in that: The inner wall of the furnace tube body (1) is a smooth surface, and the surface of the cylindrical inner component (2) is smooth.

6. The pre-activation rotary kiln reactor for producing capacitor carbon materials according to claim 1, characterized in that: The furnace tube body (1) is made of nickel alloy.

7. The pre-activation rotary kiln reactor for producing capacitor carbon materials according to claim 1, characterized in that: The cylindrical inner component (2) is made of nickel alloy.

8. The pre-activation rotary kiln reactor for producing capacitor carbon materials according to claim 1, characterized in that: The ratio of the diameter of the cylindrical inner component (2) to the inner diameter of the furnace tube body (1) is 1:(1.5-4).

9. A pre-activation method for producing capacitor carbon materials, characterized in that: The method is carried out using the pre-activation rotary kiln reactor for producing capacitor carbon materials according to any one of claims 1 to 8, and the method comprises: A mixture of raw materials of capacitor carbon material and potassium hydroxide is added to a furnace tube body (1) for heat treatment. During the heat treatment, the furnace tube body (1) rotates, and the cylindrical inner component (2) rotates to roll and heat the mixture of the raw materials of capacitor carbon material and KOH, so that moisture in the raw materials of capacitor carbon material is removed and the potassium hydroxide is pre-activated.

10. A pre-activation method for producing capacitor carbon materials according to claim 9, characterized in that: The heat treatment temperature is 400-600 degrees Celsius, the rotation speed of the furnace tube body (1) is controlled at 2-5 revolutions per minute, and the heat treatment time is controlled at 90-120 minutes.

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