Preparation method of high dispersibility acetylene carbon black and granule

Abstract

This invention belongs to the field of carbon black production technology, specifically relating to a method for preparing highly dispersible acetylene carbon black and its granules. The method involves mixing raw acetylene carbon black with water to form a mixture; wherein the mass ratio of water to raw acetylene carbon black is (1 to 3):10; the mixture is then subjected to conductive treatment to prepare highly dispersible acetylene carbon black; the prepared highly dispersible acetylene carbon black has a dispersibility value of 12.54 and a hydroxyl value of 0.26 mgKOH / g, exhibiting high dispersibility. Furthermore, no dispersant or auxiliary agent is introduced during the conductive treatment of the raw acetylene carbon black with water to prepare the highly dispersible acetylene carbon black, therefore the prepared highly dispersible acetylene carbon black is free of impurities and has high purity; the resistivity of the highly dispersible acetylene carbon black prepared by the method provided by this invention is 1.96 Ω·m, compared to the resistivity of 3 Ω·m of commercially available high-quality acetylene carbon black, demonstrating both high dispersibility and high conductivity.

Description

Technical Field

[0001] This invention belongs to the field of carbon black production technology, specifically relating to a method for preparing highly dispersible acetylene carbon black and its granules. Background Technology

[0002] Acetylene black is a carbon black obtained by continuously pyrolyzing acetylene with a purity of over 99%, which is obtained by decomposing and refining acetylene, a byproduct of the pyrolysis of calcium carbide or naphtha (crude gasoline). Compared with furnace black, it has a more developed crystal structure and secondary structure, resulting in better electrical conductivity and liquid absorption. Due to its lower levels of heavy metals and other impurities, it suffers less loss due to self-discharge. It is mainly used as the negative electrode in nickel-metal hydride batteries and can also be used as a conductor in supercapacitors.

[0003] Currently, to improve the dispersibility and stability of carbon black in polar solvent systems, the main method is dispersant-assisted dispersion. For example, Chinese invention patent CN201380047462.2 discloses an acetylene black dispersion slurry and a lithium-ion secondary battery. To improve the dispersibility of acetylene black, a dispersant is added to it, which can increase the dispersibility value of acetylene black to about 17 and the resistivity to 3 Ω·m, thus making it easier for acetylene black to disperse in the dispersion medium and improving its dispersibility. However, because a dispersant is added to acetylene black, impurities are indirectly introduced, reducing the purity of acetylene black and resulting in low purity that does not meet the requirements of some products. Summary of the Invention

[0004] In view of this, the present invention provides a method for preparing highly dispersible acetylene black and granules, to solve the technical problem in the prior art where adding dispersing aids to improve the dispersibility of acetylene black indirectly introduces impurities, reducing the purity of acetylene black and resulting in low purity that does not meet the requirements of some products.

[0005] To achieve the above objectives, this application adopts the following approach:

[0006] A method for preparing highly dispersible acetylene black includes the following steps:

[0007] The raw material acetylene black is mixed with water to form a mixture; wherein the mass ratio of water to the raw material acetylene black is (1 to 3):10.

[0008] The mixture is subjected to a conductive treatment to prepare highly dispersible acetylene black.

[0009] Preferably, the step of "conductively treating the mixture to prepare highly dispersible acetylene black" includes the following steps:

[0010] A conductive container is provided, the conductive container including at least one carbon black modified cylinder, the two ends of the carbon black modified cylinder are provided with caps, the caps are provided with conductive posts, and the conductive posts can be connected to a power source.

[0011] The mixture is introduced into the carbon black modification cylinder, the cover is closed, and the conductive post is brought into contact with the mixture.

[0012] After maintaining the power supply for a first preset time, open the cover to obtain the highly dispersible acetylene black.

[0013] Preferably, in the "first preset duration of maintaining the energized state", the energizing voltage is 220V to 380V.

[0014] Preferably, in the "maintain energized state for a first preset duration", the energized state is maintained until the current in the circuit remains constant.

[0015] Preferably, the temperature of the water is between 40°C and 80°C.

[0016] Preferably, the acetylene black raw material has an average particle size of 30 nm to 45 nm and a specific surface area of ​​55 m². 2 / g to 70m 2 / g, oxygen content of 0.07% to 0.26%, pH value of 5 to 7, resistivity of 3 Ω·m to 5 Ω·m.

[0017] Preferably, the preparation of the highly dispersible acetylene black also includes a drying process.

[0018] A highly dispersible acetylene black particle is prepared by the following method: highly dispersible acetylene black is prepared by the method described above and dried; the dried highly dispersible acetylene black is impregnated with water, and then granulated to obtain highly dispersible acetylene black particles.

[0019] A highly dispersible acetylene black particle is prepared by the following method: impregnating raw acetylene black with water, wherein the mass ratio of water to raw acetylene black is (1 to 3):10; subjecting the impregnated raw acetylene black to conductive treatment; and subjecting the conductive treated raw acetylene black to granulation and drying treatment to obtain highly dispersible acetylene black particles.

[0020] The technical solution adopted in this application has at least the following beneficial effects:

[0021] 1. This application provides a method for preparing highly dispersible acetylene black. The method involves mixing the raw acetylene black with water in a mixer to form a mixture, followed by a conductive treatment of the mixture to obtain highly dispersible acetylene black. The mass ratio of water to the raw acetylene black is (1 to 3):10. The resulting highly dispersible acetylene black has a dispersibility value of 12.54 and a hydroxyl value of 0.26 mgKOH / g. Compared to the dispersibility value of the raw acetylene black (8.21), the method provided in this application produces highly dispersible acetylene black with higher dispersibility. Furthermore, no dispersant or auxiliary agent is introduced during the conductive treatment of the raw acetylene black with water, resulting in highly dispersible acetylene black free of impurities and with high purity.

[0022] 2. The resistivity of the highly dispersible acetylene carbon black prepared by the method provided in this invention is 1.96 Ω·m, which is higher than the resistivity of 3 Ω·m of high-quality acetylene carbon black on the market. It has both high dispersibility and high conductivity.

[0023] 3. The prepared highly dispersible acetylene black only showed slight precipitation after standing in room temperature water for 13 days, without stratification or agglomeration. In contrast, the raw acetylene black showed precipitation, stratification, and agglomeration after standing in room temperature water for more than 5 days. It can be seen that the method provided in this invention can prepare highly dispersible acetylene black with good stability. Attached Figure Description

[0024] Figure 1 This is a line graph showing the dispersibility value of acetylene black in Example 2 of this invention;

[0025] Figure 2 This is a line graph showing the hydroxyl value of acetylene black in Example 2 of this invention;

[0026] Figure 3 This is a line graph showing the resistivity of acetylene black in Example 2 of this invention;

[0027] Figure 4 This is a line graph showing the dispersion stability values ​​of acetylene carbon black in Example 2 of this invention.

[0028] Figure 5 This is a schematic diagram of the conductive container in this invention.

[0029] In the figure, there is a conductive container 100, a carbon black modified cylinder 110, a cover 111, a conductive column 112, and a power supply 120. Detailed Implementation

[0030] To facilitate understanding of this application, a more comprehensive description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are also given. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to enable a more thorough and complete understanding of the disclosure of this application.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] In this embodiment, a method for preparing highly dispersible acetylene black includes the following steps: mixing raw acetylene black with water to form a mixture; wherein the mass ratio of water to raw acetylene black is (1 to 3):10; and subjecting the mixture to conductive treatment to prepare highly dispersible acetylene black.

[0033] In this embodiment, the raw material acetylene black is acetylene black powder. To prepare highly dispersible acetylene black, the raw material acetylene black and water are mixed in a mixer to form a mixture. Then, the mixture is subjected to a conductive treatment to obtain highly dispersible acetylene black. When the mass ratio of water to raw material acetylene black is (1 to 3):10, the prepared highly dispersible acetylene black exhibits higher dispersibility, dispersion stability, and conductivity. The effect is even better when the mass ratio of water to raw material acetylene black is 3:10. To ensure the quality of the prepared product, deionized water is used in all the following embodiments.

[0034] The prepared highly dispersible acetylene black has a dispersibility value of 12.54 and a hydroxyl value of 0.26 mgKOH / g. Compared with the dispersibility value of 8.21 of the raw acetylene black, the highly dispersible acetylene black prepared by the method provided in this application has higher dispersibility. Furthermore, no dispersant or auxiliary agent is introduced when the raw acetylene black is mixed with water for conductive treatment to prepare the highly dispersible acetylene black; therefore, the prepared highly dispersible acetylene black is free of impurities and has high purity. The resistivity of the highly dispersible acetylene black prepared by the method provided in this invention is 1.96 Ω·m, compared with the resistivity of 3 Ω·m of commercially available high-quality acetylene black, exhibiting both high dispersibility and high conductivity. The prepared highly dispersible acetylene black only slightly precipitated after standing in room temperature water for 13 days, without stratification or agglomeration. In contrast, the raw acetylene black precipitated, stratified, and agglomerated after standing in room temperature water for more than 5 days. Therefore, the highly dispersible acetylene black prepared by the method provided in this invention has better stability.

[0035] Please refer to Figure 5 The process of "conducting the mixture to produce highly dispersible acetylene black" includes: providing a conductive container 100, the conductive container 100 including at least one carbon black modification cylinder 110, the carbon black modification cylinder 110 having caps 111 at both ends, the caps 111 having conductive posts 112 on them, the conductive posts 112 being able to connect to a power source 120; introducing the mixture into the carbon black modification cylinder 110, closing the caps 111, and making the conductive posts 112 contact the mixture; maintaining the energized state for a first preset time, opening the caps 111, and obtaining the highly conductive acetylene black.

[0036] The conductive container 100 provided in this application includes at least one carbon black modification cylinder 110. The carbon black modification cylinder 110 can be a cylindrical or square cylinder, and its size can be set according to actual needs. Preferably, in this embodiment, two carbon black modification cylinders 110 are provided, which can be used alternately to save time and improve efficiency. Both ends of the carbon black modification cylinder 110 are provided with caps 111, and conductive posts 112 are provided on the caps 111. The conductive posts 112 are connected to a power supply 120. In use, the caps 111 are first opened, and the mixture is introduced into the carbon black modification cylinder 110. When the carbon black modification cylinder 110 is full of the mixture, the caps 111 are closed, and the power supply 120 is switched on. The conductive posts 112 remain energized for a first preset time period, during which the mixture is subjected to conductive treatment.

[0037] Specifically, in the "first preset duration of maintaining the energized state", the energizing voltage is between 220V and 380V. The preferred energizing voltage is 220V.

[0038] Specifically, in the "first preset duration of maintaining the energized state", the energized state is maintained until the current in the circuit is constant. When conducting conductive treatment on the mixture in the carbon black modification cylinder 110, the energizing voltage is constant, preferably 220V. When the current is constant, that is, when the resistance of the mixture in the carbon black modification cylinder 110 no longer changes, the energizing is stopped, and the conductive treatment of the mixture in the carbon black modification cylinder 110 ends. This process is the first preset duration.

[0039] Preferably, the temperature of the water is 40°C to 80°C, and more preferably 60°C.

[0040] In the above embodiments, the raw material acetylene carbon black has an average particle size of 30 nm to 45 nm and a specific surface area of ​​55 m². 2 / g to 70m 2 / g, oxygen content 0.07% to 0.26%, pH value 5 to 7, resistivity 3Ω·m.

[0041] In some optional embodiments, the prepared highly dispersible acetylene black is also dried.

[0042] A highly dispersible acetylene black granule is prepared by the following method: highly dispersible acetylene black is prepared by the method described above and then dried; the dried highly dispersible acetylene black is then impregnated with water, and granulated to obtain highly dispersible acetylene black granules. The granulation process and equipment used are the same as those used in existing acetylene black granulation processes, resulting in highly pure and electrically conductive highly dispersible acetylene black granules.

[0043] A highly dispersible acetylene black particle comprises: impregnating raw acetylene black with water, wherein the mass ratio of water to the raw acetylene black is (1 to 3):10; subjecting the impregnated raw acetylene black to conductive treatment; and subjecting the conductive treated raw acetylene black to granulation and drying treatment to obtain highly dispersible acetylene black particles.

[0044] In preparing highly dispersible acetylene black particles, firstly, the raw material acetylene black is impregnated with water, preferably in a mass ratio of 3:10 between water and raw material acetylene black; then, the impregnated raw material acetylene black is introduced into a conductive container 100 for conductive treatment to obtain highly dispersible acetylene black particles with high purity and high conductivity.

[0045] The following specific experimental examples further illustrate the technical solution and effects of the present invention. It should be noted that the following experimental examples are only for further explanation of the present invention and do not limit the technical solution of the present invention.

[0046] 1. Experimental Materials and Methods

[0047] 1.1 Experimental Materials

[0048] The raw material, acetylene black, comes from Ningxia Jinhai Wode Technology Co., Ltd.

[0049] The conductive container 100 used in the following embodiments includes a carbon black modified cylinder 110. For ease of resistivity calculation, the cross-sectional area of ​​the carbon black modified cylinder 110 is 0.25 m². 2 The length of the carbon black modification cylinder 110 is 2m;

[0050] The raw material, acetylene carbon black, has a dispersibility value of 8.21, a hydroxyl value of 0.2 mg KOH / g, a resistivity of 3 Ω·m, and slight precipitation after standing in room temperature water for 6 days.

[0051] 1.2 Experimental Methods

[0052] The experiment was divided into six treatment groups: Comparative Example 1, Comparative Example 2, Example 1, Example 2, Example 3, and Example 4. Acetylene black (dried acetylene black) was prepared from each of the six treatment groups, and its parameters were measured according to the following detection methods:

[0053] The current and voltage during the conductive treatment are detected, the resistance is calculated, and the resistivity of the treated acetylene black is calculated according to the formula for resistance and resistivity.

[0054] The treated acetylene black was placed in room temperature water for different periods of time to test its dispersion stability.

[0055] According to the patent number: CN201710367601.X, entitled "Detection method for carbon black dispersibility provided in determining carbon black dispersibility using blackness distribution curve", the dispersibility value of the acetylene carbon black treated in the following examples was detected.

[0056] The hydroxyl value of the treated acetylene black was determined by gas chromatography.

[0057] 2. Comparative Example 1: Conductivity treatment of raw material acetylene black

[0058] Raw acetylene black was introduced into the carbon black modification cylinder 110. When the carbon black modification cylinder 110 was full of raw acetylene black, the cover 111 was closed, the power supply 120 was turned on, and the power supply was kept on. The power supply voltage was 220V. When the current in the circuit was constant, the power supply 120 was turned off to obtain the processed acetylene black. The current value and voltage value when the current was constant were recorded. The resistivity of the processed acetylene black was calculated according to the above calculation method, and its dispersibility, dispersion stability and hydroxyl value were tested. The results are shown in Table 1.

[0059] 3. Comparative Example 2: The mixture (raw materials acetylene black and water) was not subjected to conductive treatment.

[0060] The difference between Comparative Example 2 and Comparative Example 1 above is that: water at 60℃ and raw material acetylene black were mixed at a mass ratio of 3:10 to form a mixture. No conductive treatment was performed. After drying, acetylene black was obtained. The results are shown in Table 1.

[0061] 4. Example 1: Conductive treatment of mixture (raw materials: acetylene black, water)

[0062] The difference between this Example 1 and Comparative Example 1 is that: water at 60°C and raw material acetylene carbon black are mixed at a mass ratio of 3:10 to form a mixture. The mixture is then introduced into the carbon black modification cylinder 110. After the carbon black modification cylinder 110 is filled with the mixture, the cover 111 is closed, the power supply 120 is connected, and the power supply is maintained. The other steps are the same as those in Comparative Example 1. The results are shown in Table 1.

[0063] Table 1 Experimental Results Detection Table

[0064]

[0065] As can be seen from the data in Comparative Example 1 in Table 1 above, when the raw material acetylene carbon black is directly introduced into the carbon black modification cylinder 110 and energized, the dispersibility value of the treated acetylene carbon black is 8.39 and the hydroxyl value is 0.2 mgKOH / g; when energized at a voltage of 220V, the current is 10A when the current reaches a constant value, and according to the resistivity calculation formula, the resistivity of the acetylene carbon black is 2.75Ω·m; when the acetylene carbon black is left to stand in room temperature water for 7 days, there is slight precipitation, no stratification, and no agglomeration after standing for 1 to 6 days;

[0066] As can be seen from the data in Comparative Example 2 in Table 1 above, when acetylene black is mixed with water at 60℃ to form a mixture, and then the mixture is dried, the dispersibility value of the acetylene black is 8.69 and the hydroxyl value is 0.23 mgKOH / g; when energized at 220V, the current reaches a constant value of 11A, and according to the resistivity calculation formula, the resistivity of the acetylene black is 2.5Ω·m; when the acetylene black is left to stand in room temperature water for 8 days, slight precipitation occurs.

[0067] As can be seen from the data in Example 1 in Table 1 above, when the raw material acetylene black is mixed with water at 60°C to form a mixture, and the mixture is introduced into the carbon black modification cylinder 110 and energized, the resulting acetylene black has a dispersibility value of 12.54 and a hydroxyl value of 0.26 mgKOH / g; when energized at 220V, the current reaches a constant value of 14A, and according to the resistivity calculation formula, the resistivity of the acetylene black is 1.96 Ω·m; when the acetylene black is left to stand in room temperature water for 13 days, slight precipitation occurs, and there is no precipitation, stratification, or agglomeration before that.

[0068] The data in Table 1 above fully demonstrates that when acetylene black is mixed with water to form a mixture, and this mixture is then introduced into the carbon black modification cylinder 110 and electrified, the resulting acetylene black has a larger hydroxyl value, lower resistivity, higher dispersibility, and better dispersion stability compared to the acetylene black obtained in Comparative Examples 1 and 2. The lower the resistivity, the better the conductivity. Therefore, the acetylene black in Example 1 has high dispersibility and conductivity, making it a highly dispersible acetylene black. Furthermore, because only water was added during the preparation process for conductivity treatment to improve the dispersibility of the acetylene black, without the use of other dispersants and additives, the resulting highly dispersible acetylene black is free of impurities and has high purity.

[0069] 5. Example 2: Optimal mass ratio of water to raw material acetylene black

[0070] The difference between Example 2 and Example 1 above is that the mass ratio of water to acetylene black is changed to form a mixture. The other steps are the same as in Example 1 above. The specific mass ratio of water to acetylene black is shown in Table 2.

[0071] Table 2. Mass ratio of water to raw material acetylene black

[0072]

[0073] After the experiment, the hydroxyl value, resistivity, dispersibility value, and dispersion stability of the highly dispersible acetylene black after the first to fifth experimental groups were measured and calculated. The specific results are shown in Table 3.

[0074] Table 3. Experimental Results Detection Table for Example 2

[0075]

[0076] Please refer to Table 3 and... Figure 1 When the mass ratio of water to raw material acetylene black is greater than 3:10, the dispersibility value of highly dispersible acetylene black basically no longer changes, and the dispersibility value of highly dispersible acetylene black shows a stable trend.

[0077] Please refer to Table 3 and... Figure 2 When the mass ratio of water to raw material acetylene black is greater than 3:10, the hydroxyl value of highly dispersible acetylene black basically no longer changes, and the hydroxyl value of highly dispersible acetylene black shows a stable trend.

[0078] Please refer to Table 3 and... Figure 3 When the mass ratio of water to raw acetylene black is 1 to 3:10, the resistivity of highly dispersible acetylene black shows a decreasing trend; when the mass ratio of water to raw acetylene black is greater than 3:10, the resistivity of highly dispersible acetylene black basically no longer changes.

[0079] Please refer to Table 3 and... Figure 4 When the mass ratio of water to raw material acetylene black is 1 to 3:10, the dispersion stability value of the prepared highly dispersible acetylene black shows a gradual increasing trend. When the mass ratio of water to raw material acetylene black is greater than 3:10, the dispersion stability value of the prepared highly dispersible acetylene black basically no longer changes.

[0080] Based on the experimental data in the charts, when the mass ratio of water to raw material acetylene black is greater than 3:10, the dispersibility value, hydroxyl value, resistivity, and dispersion stability of the obtained highly dispersible acetylene black remain essentially unchanged. In other words, when the proportion of water is relatively high, the performance of highly dispersible acetylene black is basically not affected by the same treatment method. Therefore, to save costs and resources, the preferred mass ratio of raw material acetylene black to water is 1 to 3:10, with 3:10 being the preferred ratio.

[0081] 6. Example 3: Optimal water temperature

[0082] The difference between Example 3 and Example 1 above is that the temperature of the water is changed, and the raw material acetylene black is mixed with water at different temperatures to form a mixture. The other steps are the same as those in Example 1 above. The specific water temperatures are shown in Table 4.

[0083] Table 4 Water Temperature

[0084]

[0085] After the experiment, the hydroxyl value, resistivity, dispersibility value, and dispersion stability of the highly dispersible acetylene black prepared in the sixth and seventh groups were measured and calculated. The specific results are shown in Table 5.

[0086] Table 5. Experimental Results Detection Table for Example 3

[0087]

[0088] As can be seen from the data in Table 5, when the water temperature is 40℃, the hydroxyl value of the obtained highly dispersible acetylene black is 0.25 mgKOH / g, the resistivity is 1.97 Ω·m, and the dispersibility value is 12.0; when the water temperature is 80℃, the hydroxyl value of the obtained highly dispersible acetylene black is 0.25 mgKOH / g, the resistivity is 1.98 Ω·m, and the dispersibility value is 12.11; all the data are not as good as the data in Example 1 when the water temperature is 60℃.

[0089] It is evident that water temperature affects the dispersibility, dispersion stability, and conductivity of highly dispersible acetylene black, but the effect is not significant. When the water temperature is 60℃, the dispersibility and conductivity of the prepared highly dispersible acetylene black are better.

[0090] 7. Example 4: Conductive treatment of the mixture (raw materials: acetylene black and H2O2 solution)

[0091] The difference between Example 4 and Example 1 above is that: H2O2 solution at 60°C is mixed with raw material acetylene black at a mass ratio of 3:10 to form a mixture. The mass concentration of the H2O2 solution is 5%. Other steps are the same as those in Example 1 above. The results are shown in Table 6.

[0092] Table 6. Experimental Results Detection Table for Example 4

[0093]

[0094] As can be seen from the data in Example 4 of Table 6 above, when the raw material acetylene carbon black is mixed with H2O2 solution at 60℃ at a mass ratio of 3:10 to form a mixture, and the mixture is introduced into the carbon black modification cylinder 110 and electrified, the dispersibility value of the treated acetylene carbon black is 18.8 and the hydroxyl value is 0.33 mgKOH / g; when electrified at a voltage of 220V, the current is 22A when the current reaches a constant value, and the resistivity of the acetylene carbon black is 1.25Ω·m according to the resistivity calculation formula; when the acetylene carbon black is left to stand in room temperature water for 15 days, there is no precipitation, no stratification, and no agglomeration. It can be seen that using H2O2 solution to mix with the raw material acetylene carbon black and then performing conductive treatment can further improve the dispersibility and conductivity of acetylene carbon black.

[0095] Furthermore, it has been verified that the highly dispersible acetylene black can also be successfully prepared using the method provided by this invention at a voltage of 380V. The dispersibility value, hydroxyl value, resistivity, and dispersion stability of the highly dispersible acetylene black prepared at 380V are basically the same as those of the highly dispersible acetylene black prepared at 220V in Example 1 above. However, the high voltage of 380V is energy-intensive. Therefore, under the premise of achieving the same effect, it is preferable to use a voltage of 220V to prepare the highly dispersible acetylene black.

[0096] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and such modifications or substitutions should all be covered within the scope of protection of the present invention.

Claims

1. A method for preparing highly dispersible acetylene black, characterized in that, Includes the following steps: Acetylene black is mixed with water to form a mixture; wherein the mass ratio of water to acetylene black is 1-3:10, the temperature of the water is 40℃ to 80℃, and the average particle size of the acetylene black is 30nm to 45nm, with a specific surface area of ​​55 m². 2 / g to 70 m 2 / g, oxygen content of 0.07% to 0.26%, pH value of 5 to 7, resistivity of 3 Ω·m to 5 Ω·m; A conductive container is provided, the conductive container including at least one carbon black modified cylinder, the two ends of the carbon black modified cylinder are provided with caps, and the caps are provided with conductive posts, the conductive posts being able to be connected to a power source. The mixture is introduced into the carbon black modification cylinder, the cover is closed, and the conductive post is brought into contact with the mixture. After maintaining the energized state for a first preset time, open the cover to obtain the highly dispersible acetylene black; In the "first preset duration of maintaining the energized state", the energized voltage is 220 V to 380 V; In the "maintain energized state for a first preset duration", the energized state is maintained until the current in the circuit remains constant.

2. The method for preparing highly dispersible acetylene black according to claim 1, characterized in that, It also includes drying the prepared highly dispersible acetylene black.

3. A highly dispersible acetylene carbon black particle, characterized in that, Prepared by the following method: Highly dispersible acetylene black was prepared by the method for preparing highly dispersible acetylene black according to claim 1, and then dried. The dried highly dispersible acetylene black was soaked in water and then granulated to obtain highly dispersible acetylene black particles.

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