Carbon black treatment method and treatment device

Abstract

The invention provides a carbon black treatment method and a treatment device. The carbon black treatment method comprises the following steps: obtaining to-be-treated carbon black with a first set content; mixing the to-be-treated carbon black with an organic solvent to remove impurities attached to the to-be-treated carbon black so as to obtain a mixed material; filtering the mixed material under set conditions, and drying the filtered product at a first preset drying temperature to obtain a first carbon black material; performing acid pickling on the first carbon black material by using acid liquor with a second set content to obtain an initial graphite material; the initial graphite is subjected to post-treatment to obtain the graphite material, and the problem that impurities are attached to the surface of the carbon black in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of tire recycling, and in particular to a carbon black processing method and a processing device. Background Art

[0002] As an environmentally friendly way to deal with waste tires, the pyrolysis recovery technology of waste tires has received widespread attention and application around the world. The pyrolysis process decomposes tires in an oxygen-free environment to produce recyclable by-products such as fuel oil, combustible gas and carbon black. Carbon black, as one of the pyrolysis products, can theoretically be reused as a raw material in rubber products to achieve resource recycling. However, in practical applications, the surface of pyrolytic carbon black often carries a large amount of organic residues and metal ions. These impurities not only reduce the purity of carbon black, but also obscure its surface active sites, thereby affecting its reinforcement performance in materials such as rubber. In addition, impurities such as oil stains on the surface of carbon black limit its application in tires and other rubber products, further weakening the market value and application scope of pyrolytic carbon black.

[0003] In order to overcome this problem, the existing technology mostly adopts chemical cleaning methods, which uses chemical reagents such as strong acids or strong bases to remove impurities on the surface of carbon black to improve its purity and activity. Although this method can remove impurities on the surface of carbon black to a certain extent, it is costly and may produce secondary pollution during the treatment process, causing adverse effects on the environment, and also increasing the treatment cycle. Therefore, finding a low-cost, low-energy, and environmentally friendly waste tire carbon black deep processing technology to improve its added value is one of the key issues that need to be urgently solved in the current waste tire recycling field. Summary of the invention

[0004] The main purpose of the present invention is to provide a carbon black processing method and a processing device to solve the problem of impurities adhering to the surface of carbon black in the prior art.

[0005] In order to achieve the above object, according to one aspect of the present invention, a carbon black processing method is provided, the processing method comprising:

[0006] Obtaining a first set content of carbon black to be treated;

[0007] Mixing the carbon black to be treated with an organic solvent to remove impurities attached to the carbon black to be treated to obtain a mixed material;

[0008] filtering the mixed material under set conditions, and drying the filtered product at a first preset drying temperature to obtain a first carbon black material;

[0009] Using an acid solution with a second set content to acid-wash the first carbon black material to obtain an initial graphite material;

[0010] The initial graphite is post-processed to obtain expanded graphite material.

[0011] Furthermore, the step of post-processing the initial graphite material to obtain the expanded graphite material comprises:

[0012] obtaining an intercalant;

[0013] Adding an intercalant to an initial graphite material, and allowing the material to stand for a first set time under the conditions of room temperature and concentrated acid;

[0014] After the accumulated time reaches a first set time, the obtained product system is expanded at a set temperature to obtain an initial graphite material;

[0015] Among them, the first set time is 2h to 12h, the set temperature is 80℃ to 600℃, and the concentrated acid is any one of concentrated sulfuric acid, concentrated hydrochloric acid and concentrated nitric acid, or a mixture of any two of them, or a mixture of concentrated sulfuric acid, concentrated hydrochloric acid and concentrated nitric acid.

[0016] Furthermore, the step of mixing the carbon black to be treated with an organic solvent to obtain a mixed material includes:

[0017] Adding a third set content of an organic solvent to the carbon black to be treated, and stirring for a second set time to obtain a mixed material;

[0018] Among them, the third set content is 10L, the second set time is 1h to 8h, and the organic solvent is any one of alkanes, halogenated hydrocarbons, and DMF.

[0019] Furthermore, the setting conditions include: placing the filtered product in a vacuum environment; and the first predetermined drying temperature is 100 degrees Celsius.

[0020] Further, the step of pickling the first carbon black material with the acid solution having the second set content to obtain the initial graphite material includes:

[0021] adding a second set amount of acid solution to the first carbon black material, and performing acid washing for a third set time to obtain an acid washing product system;

[0022] placing the acid-washed product system under a vacuum environment, and drying it at a temperature of 100° C. to 200° C. for a fourth set time to obtain a dried product system;

[0023] heating the dried product system to obtain an initial graphite material;

[0024] The initial graphite temperature is 3000° C., and the fourth setting time is 2 h to 12 h.

[0025] Furthermore, the intercalant is any one of concentrated sulfuric acid, concentrated hydrochloric acid and concentrated nitric acid.

[0026] According to another aspect of the present invention, a carbon black processing device is provided, which is applied to the above-mentioned carbon black processing method, and the carbon black processing device comprises:

[0027] A stirring and washing component, wherein the stirring and washing component has a first feed inlet and a second feed inlet;

[0028] A carbon black storage tank, the outlet of which is connected to the first feed port, so as to deliver the carbon black to the stirring and washing component in real time;

[0029] An organic solvent storage tank, the outlet of which is connected to the second feed port, so as to deliver the organic solvent to the stirring and washing component in real time and mix and wash the organic solvent with the carbon black in the stirring and washing component to obtain a mixed material;

[0030] A filtering and drying component, wherein the inlet of the filtering and drying component is connected to the outlet end of the stirring and washing component, so as to filter and dry the first carbon black to obtain a first carbon black material;

[0031] A pickling and drying component, wherein the inlet end of the pickling and drying component is connected to the outlet end of the filtering and drying component, so as to pickle and dry the first carbon black to obtain an initial graphite material;

[0032] The expansion component has an inlet end connected to the outlet end of the pickling and drying component to post-treat the initial graphite to obtain a graphite material.

[0033] Further, the stirring and washing component comprises:

[0034] A stirring and washing tank, wherein the stirring and washing tank has a stirring and washing space, and the stirring and washing tank has a first feed inlet and a second feed inlet;

[0035] A driving component, the driving component is arranged on the stirring and washing tank;

[0036] A stirring rod, the stirring rod is arranged in the stirring washing tank, and one end of the stirring rod is connected to the driving end of the driving component;

[0037] A stirring blade is provided at one end of the stirring rod, so as to stir and wash the carbon black and the organic solvent in the stirring and washing space under the driving action of the driving component to obtain a mixed material;

[0038] The rotation speed of the driving component ranges from 1000 rpm to 50000 rpm.

[0039] Further, the filtering and drying component comprises:

[0040] A filter section, wherein a filter component is provided in the filter section to filter the mixed material from the stirring and washing component;

[0041] A vacuum part, which is disposed below the filter part to vacuum dry the mixed material after being filtered by the filter part to obtain a first carbon black material;

[0042] The vacuum degree in the vacuum part is less than or equal to 100Pa.

[0043] Further, the pickling and drying parts include:

[0044] Acid supply components;

[0045] The pickling section is connected to the acid solution supply component to transport the acid solution into the pickling section to pickle the second carbon black in the pickling section to obtain a pickling product;

[0046] A drying section, which is arranged at one side of the pickling section, and has a vacuum environment in the drying section, so as to dry the pickling product at a second predetermined drying temperature to obtain an initial graphite material;

[0047] The vacuum degree of the drying part is less than or equal to 100 Pa, and the second predetermined drying temperature is room temperature to 100° C.

[0048] By applying the technical solution of the present invention, the organic impurities attached to the surface of the carbon black, such as rubber residues and oil stains that are not completely pyrolyzed, can be effectively removed by mixing the carbon black to be treated with an organic solvent. The treatment at this stage effectively improves the purity of the carbon black, lays a solid foundation for the subsequent graphitization and expansion treatment, and ensures the high quality of the final product. The filtration under the set conditions and the drying treatment at the first preset drying temperature can not only accurately remove the solvent, but also ensure that the dryness meets the requirements of subsequent treatment while maintaining the integrity of the carbon black structure. This precisely controlled process significantly improves production efficiency and product conversion rate, and reduces energy consumption and production costs. Pickling the dried carbon black material with the second set content of acid can further remove inorganic impurities, such as metal ions, ash, etc. At the same time, the pickling process can promote the conversion of carbon black material into graphite material, and the generated initial graphite material has a higher graphite degree and fewer defects, providing a raw material with better performance for subsequent expansion treatment. By post-processing the initial graphite material after pickling, including but not limited to graphitization and expansion, it can be converted into expanded graphite material with high fluffiness, excellent conductivity and adsorption performance. This series of treatments increases the added value of carbon black recycled from waste tires, making it show a broader application prospect in the fields of battery electrode materials, catalyst carriers, thermal insulation materials, etc. The entire treatment process, from impurity removal, drying to pickling, is carried out under set conditions, reducing the use and emission of chemical substances and reducing the impact on the environment. In particular, the recycling of organic solvents and acid solutions, as well as the drying treatment under vacuum or set temperature, embody the principles of efficient resource utilization and green chemistry, and promote the process of resource utilization and sustainable development of waste tires. The combination of deep purification, precise pickling and efficient post-treatment not only improves the conversion efficiency of waste tire carbon black and the output rate of expanded graphite materials, but also reduces the waste of raw materials and energy, and realizes the efficient recycling of resources from both economic and environmental protection levels, providing an economically feasible and environmentally friendly solution for waste tire treatment and graphite material production. In summary, the processing flow of the present invention not only effectively removes impurities in the carbon black recycled from waste tires and improves the purity and activity of the carbon black material, but also realizes the efficient conversion from carbon black to expanded graphite material through the post-processing process, significantly improving the added value and market competitiveness of waste tire carbon black, embodying the concepts of green chemistry, circular economy and sustainable development, and having significant economic and environmental benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0050] Figure 1A schematic diagram showing the structure of a processing device according to an embodiment of the present application is shown;

[0051] The above drawings include the following reference numerals:

[0052] 101. stirring and washing tank; 102. driving component; 103. stirring rod; 104. stirring blade; 2. carbon black storage tank; 3. organic solvent storage tank; 401. filtering part; 402. vacuum part; 501. acid supply part; 502. pickling part; 503. drying part; 6. expansion part. DETAILED DESCRIPTION

[0053] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0054] The purpose of this application is to provide a carbon black processing method and processing device to address the above problems.

[0055] First, the present application provides a carbon black processing method, which comprises:

[0056] Obtaining a first set content of carbon black to be treated;

[0057] Mixing the carbon black to be treated with an organic solvent to remove impurities attached to the carbon black to be treated to obtain a mixed material;

[0058] Specifically, the method comprises adding a third set content of an organic solvent to the carbon black to be treated, and stirring the mixture for a second set time to obtain a mixed material;

[0059] Among them, the third set content is 10L, the second set time is 1h to 8h, and the organic solvent is any one of alkanes, halogenated hydrocarbons, and DMF.

[0060] filtering the mixed material under set conditions, and drying the filtered product at a first preset drying temperature to obtain a first carbon black material;

[0061] The set conditions include: placing the filtered product in a vacuum environment; and the first predetermined drying temperature is 100 degrees Celsius.

[0062] Specifically, in this embodiment, the present application provides a carbon black treatment method for removing impurities on the surface of carbon black, aiming to improve the purity and activity of carbon black and create better conditions for subsequent expanded graphite production. The specific steps are as follows:

[0063] A certain amount of carbon black material with a first set content is obtained from the waste tire pyrolysis process as the raw material to be processed, that is, the carbon black to be processed. In this embodiment, 1 kg of recovered carbon black is taken as an example for subsequent processing.

[0064] A third set content (10 L in this embodiment) of an organic solvent, such as an alkane (such as hexane) or a halogenated hydrocarbon (such as dichloromethane) is added to the carbon black, and stirred under the set stirring conditions, i.e., for the second set time (1 h to 8 h) to effectively remove the oil and other organic impurities attached to the surface of the carbon black to generate a preliminarily clean mixed material.

[0065] The mixed material washed with an organic solvent is placed under set conditions for filtering to remove solvents and impurities. Subsequently, the filtered product is placed in a vacuum environment and dried at a first predetermined drying temperature (100 degrees Celsius in this embodiment) until the carbon black material reaches a predetermined degree of dryness, thereby obtaining a first carbon black material with improved purity and activity. In a vacuum drying environment, secondary oxidation reactions between carbon black and substances such as oxygen in the air can be effectively avoided. At the same time, high-temperature drying helps to completely remove the organic solvent remaining on the surface of the carbon black, creating conditions for subsequent pickling and graphitization treatments.

[0066] The first carbon black material is further treated with inorganic acid to remove inorganic impurities such as metal ions, dried and graphitized, and finally converted into high value-added expanded graphite material through intercalation and expansion. The equipment and technology involved in this step will be described in detail in the subsequent technical description.

[0067] Compared with traditional chemical cleaning methods, the organic solvent washing and vacuum drying treatment adopted in the present invention not only significantly reduces the cost, but also realizes the recycling of organic solvents, reduces the demand for new solvents, and improves resource utilization.

[0068] The treatment method of the present invention not only removes impurities on the surface of carbon black, but also reduces secondary pollution generated during the chemical cleaning process, thereby minimizing the impact on the environment.

[0069] After optimized pretreatment, the surface impurities of the carbon black material are effectively removed, and the purity and activity are significantly improved, providing a better raw material basis for subsequent conversion into expanded graphite.

[0070] Using an acid solution with a second set content to acid-wash the first carbon black material to obtain an initial graphite material;

[0071] Specifically, the acid solution with a second set content is added to the first carbon black material, and pickling is performed for a third set time to obtain a pickling product system;

[0072] placing the acid-washed product system under a vacuum environment, and drying it at a temperature of 100° C. to 200° C. for a fourth set time to obtain a dried product system;

[0073] heating the dried product system to obtain an initial graphite material;

[0074] The initial graphite temperature is 3000° C., and the fourth setting time is 2 h to 12 h.

[0075] Specifically, after the first carbon black material in the present application is washed with an organic solvent and vacuum dried, it enters the acid washing step to further remove inorganic impurities on its surface, such as metal ions, to lay the foundation for subsequent graphitization treatment. The specific steps are as follows:

[0076] Ensure that the first carbon black material is completely dry and does not contain any residual organic solvent, add a second set content of acid to the first carbon black material, the acid is mainly any two combinations of hydrochloric acid, sulfuric acid and nitric acid, wherein the ratio of hydrochloric acid: sulfuric acid / hydrochloric acid: nitric acid / sulfuric acid: nitric acid can be 1:1 / 2:1 / 3:1. Within the third set time (2h to 12h), the acid is fully contacted with the carbon black by stirring, pickling is performed, and a pickling product system is generated. The choice of pickling time is intended to ensure the thorough removal of impurities while avoiding excessive damage to the carbon black structure.

[0077] The pickling product system is placed in a vacuum environment to avoid the gas generated during the pickling process from polluting the environment. At the same time, it is dried for a fourth set time (such as 2h to 12h) at a set temperature of 100°C to 200°C until the acid liquid is completely evaporated to obtain a dry product system. High-temperature vacuum drying helps to remove the acid liquid remaining on the surface of the carbon black and avoid the adverse effects of the acid liquid in the subsequent graphitization process. The dry product system is further subjected to high-temperature heating treatment and treated at an initial graphitization temperature of 3000°C in a graphitization device, such as a vacuum-type, bedroom-in-series graphitization furnace, to convert the carbon black material into an initial graphite material. High-temperature treatment (3000°C) can promote the reorganization of the carbon black structure and convert it into a graphite material with a higher degree of graphitization, thereby having better physical and chemical properties.

[0078] Through the combination of organic solvent pretreatment and pickling steps, the present invention can deeply remove organic and inorganic impurities on the surface of carbon black, significantly improve the purity and activity of raw materials, and provide high-quality carbon black materials for subsequent graphitization treatment. The pickling step of the present invention is carried out under a vacuum environment, which effectively controls the emission of acidic gases, avoids secondary pollution to the environment, and complies with the principles of green chemistry. The initial carbon black material treated with 3000°C high-temperature graphitization has significantly improved graphitization and conductivity, laying a foundation for subsequent conversion into expanded graphite materials, and is expected to prepare expanded graphite products with better performance. The pickling step design of the present invention is coordinated with the subsequent graphitization and expansion treatment steps to form a continuous production process, which improves production efficiency and economic benefits. Through the method described in this application, the conversion process of waste tire carbon black is not only more efficient and environmentally friendly, but also can produce expanded graphite materials with higher added value, providing a new way for the resource utilization of waste tires, and also injecting new vitality into the development and application of new energy materials.

[0079] Post-processing the initial graphite to obtain a graphite material;

[0080] Specifically, the method comprises: obtaining an intercalation agent;

[0081] Adding an intercalant to an initial graphite material, and allowing the material to stand for a first set time under the conditions of room temperature and concentrated acid;

[0082] After the accumulated time reaches a first set time, the obtained product system is expanded at a set temperature to obtain an initial graphite material;

[0083] Among them, the first set time is 2h to 12h, the set temperature is 80°C to 600°C, the intercalation agent is any one of concentrated sulfuric acid, concentrated hydrochloric acid, and concentrated nitric acid, the concentrated acid is any one of concentrated sulfuric acid, concentrated hydrochloric acid and concentrated nitric acid, or a mixture of any two, or a mixture of concentrated sulfuric acid, concentrated nitric acid and concentrated hydrochloric acid.

[0084] Specifically, the post-processing stage of the present invention aims to convert the initial graphite material that has been graphitized into expanded graphite material through intercalation and expansion treatment. The specific steps are as follows:

[0085] Concentrated sulfuric acid, concentrated hydrochloric acid or concentrated nitric acid is selected as the intercalation agent. In this embodiment, concentrated sulfuric acid is used as an example.

[0086] At room temperature, an intercalation agent is added to the initial graphite material, and the amount of the intercalation agent added needs to be appropriately adjusted according to the mass of the initial graphite material. In the environment of concentrated sulfuric acid, the first set time (2h to 12h) is allowed to stand, during which the intercalation agent can be embedded in the graphite interlayer to form a graphite intercalation compound. The setting of the intercalation time needs to consider the type of intercalation agent and the characteristics of the initial graphite material to ensure sufficient intercalation without damaging the integrity of the graphite structure. In this embodiment, the intercalation time is 6 to 12 hours, or 2 to 12 hours.

[0087] After the intercalation treatment is completed, the product system is placed at a set temperature for expansion treatment (the set temperature in this embodiment is 80°C to 600°C). High-temperature expansion is a key step in the production of expanded graphite materials. It prompts the intercalation agent to decompose rapidly, release gas, generate pressure between graphite layers, and cause the distance between graphite layers to increase instantly, thereby generating fluffy expanded graphite materials. The selection of expansion temperature needs to consider the optimal conditions for the decomposition of the intercalation agent, as well as avoiding the decomposition and structural damage of the graphite material. The innovative device of the present invention can accurately control the temperature and time during the expansion process to ensure the quality and performance of the expanded graphite material.

[0088] Through intercalation and expansion treatment, the structure of the initial graphite material is significantly changed to form an expanded graphite material with high expansion degree and porous structure. Its physical and chemical properties such as electrical conductivity, adsorption performance, and high temperature resistance are significantly improved, providing high-quality raw materials for high-tech fields such as battery electrode materials, catalyst carriers, and thermal insulation materials.

[0089] Compared with traditional chemical treatment methods, the intercalation agent and expansion process adopted in the present invention reduce the emission of harmful gases and reduce environmental risks. While satisfying the improvement of material performance, it also takes into account the principles of green chemistry.

[0090] By precisely controlling the type of intercalant, intercalation time and expansion temperature, the present invention achieves efficient and controllable conversion from initial graphite material to expanded graphite material, thereby improving the stability of the production process and the uniformity of product quality.

[0091] Due to its unique physical and chemical properties, expanded graphite material has shown broad application prospects in multiple high value-added fields. The treatment method of this embodiment not only solves the problem of deep purification and conversion of waste tire carbon black, but also provides the possibility for its application in new energy, high-performance materials and other fields, thereby improving the economic benefits of waste tire recycling.

[0092] Through the above specific implementation methods, the present invention provides a continuous and environmentally friendly production scheme from waste tire carbon black to expanded graphite material, aiming to promote the effective utilization of waste tire resources and the development of green circular economy.

[0093] Example 1

[0094] 1 kg of carbon black (original N134) recovered from waste tires is added to the stirring and washing component, and then 10L of dichloromethane solvent is added, and the driving component 102 is controlled to drive the stirring rod 103 and the stirring blade 104 to stir for 2 to 6 hours, and then the mixture is transported to the filtering part 401 for filtration, and the filtered product is transported to the vacuum part 402 to be dried to constant weight at a temperature of 100° C., and then the material is transported to the acid supply component 501 and washed with hydrochloric acid with a concentration of 36% to 38% for 4 to 8 hours, and then transported to the vacuum part 402 to be dried at a temperature of 100° C. to 200° C. to obtain a dry product system, and the dry product system is heated to 3000° C. to form an initial graphite material, and the initial graphite material is sent to the expansion component 6 for high-temperature expansion, and intercalated for 2 to 12 hours under the conditions of room temperature and concentrated sulfuric acid, and the graphite containing the intercalation agent is subjected to high-temperature expansion to obtain an expanded graphite material with a high expansion degree, and its size distribution is 2 to 50 μm.

[0095] Example 2

[0096] 1 kg of carbon black (original N134) recovered from waste tires is added to the stirring and washing component, and then 10L of chloroform solvent is added, and the driving component 102 is controlled to drive the stirring rod 103 and the stirring blade 104 to stir for 1 to 8 hours, and then the mixture is transported to the filtering part 401 for filtration, and the filtered product is transported to the vacuum part 402 to be dried to constant weight at a temperature of 100° C., and then the material is transported to the acid supply part 501 and washed with sulfuric acid with a concentration of 30% for 4 to 8 hours, and then transported to the vacuum part 402 to be dried at a temperature of 100° C. to 200° C. to obtain a dry product system, and the dry product system is heated to 3000° C. to form an initial graphite material, and the initial graphite material is sent to the expansion component 6 for high-temperature expansion, and intercalated for 2 to 12 hours under the conditions of room temperature and concentrated sulfuric acid, and the graphite containing the intercalation agent is subjected to high-temperature expansion to obtain an expanded graphite material with a high expansion degree, and its size distribution is 3 to 40 μm.

[0097] Example 3

[0098] 1 kg of carbon black (original N134) recovered from waste tires is added to the stirring and washing component, and then 10L of chloroform solvent is added, and the driving component 102 is controlled to drive the stirring rod 103 and the stirring blade 104 to stir for 1 to 8 hours, and then the mixture is transported to the filtering part 401 for filtration, and the filtered product is transported to the vacuum part 402 to be dried to constant weight at a temperature of 100° C., and then the material is transported to the acid supply component 501 and washed with sulfuric acid with a concentration of 30% for 4 to 8 hours, and then transported to the vacuum part 402 to be dried at a temperature of 100° C. to 200° C. to obtain a dry product system, and the dry product system is heated to 3000° C. to form an initial graphite material, and the initial graphite material is sent to the expansion component 6 for high-temperature expansion, and intercalated for 6 to 12 hours under the conditions of room temperature and concentrated sulfuric acid, and the graphite containing the intercalation agent is subjected to high-temperature expansion to obtain an expanded graphite material with a high expansion degree, and its size distribution is 20 to 40 μm.

[0099] The present application also provides a carbon black processing device, which is applied to the carbon black processing method as described above, and the carbon black processing device comprises:

[0100] A stirring and washing component, wherein the stirring and washing component has a first feed inlet and a second feed inlet;

[0101] A carbon black storage tank 2, the outlet of which is connected to the first feed port, so as to deliver the carbon black to the stirring and washing component in real time;

[0102] An organic solvent storage tank 3, the outlet of which is connected to the second feed port, so as to deliver the organic solvent to the stirring and washing component in real time and mix and wash the organic solvent with the carbon black in the stirring and washing component to obtain a mixed material;

[0103] The stirring and washing component comprises: a stirring and washing tank 101, the stirring and washing tank 101 has a stirring and washing space, and the stirring and washing tank 101 has a first feed inlet and a second feed inlet;

[0104] A driving component 102, the driving component 102 is arranged on the stirring and washing tank 101;

[0105] A stirring rod 103, wherein the stirring rod 103 is disposed in the stirring washing tank 101, and one end of the stirring rod 103 is connected to the driving end of the driving component 102;

[0106] A stirring blade 104, which is disposed at one end of the stirring rod 103, and is driven by the driving component 102 to stir and wash the carbon black and the organic solvent in the stirring and washing space to obtain a mixed material;

[0107] The rotation speed of the driving component 102 ranges from 1000 rpm to 50000 rpm.

[0108] Specifically, Figure 1 As shown, the present application also provides a carbon black processing device, including a stirring and washing component, the stirring and washing component includes a stirring and washing tank 101, which has a first feed port and a second feed port, and also includes a carbon black storage tank 2 storing carbon black, the outlet of the carbon black storage tank 2 is connected to the first feed port, so as to transport the carbon black to the stirring and washing component through the first feed port, and also includes an organic solvent storage tank 3, the outlet of the organic solvent storage tank 3 is connected to the second feed port, so as to transport the organic solvent to the stirring and washing component through the second feed port, and mix and wash the organic solvent with the carbon black in the stirring and washing component to obtain a mixed material, and a driving component 102 is also provided on the stirring and washing tank 101, and the driving component 102 can be a driving motor in this embodiment, and the driving end of the driving component 102 extends into the interior of the stirring and washing tank 101, and its driving end is connected to a stirring rod 103, and a stirring blade 104 is connected to the end of the stirring rod 103 away from the driving component 102, and the stirring blade The blade 104 has multiple stirring blades 104 which are circumferentially distributed around the axis of the stirring rod 103. When the carbon black and the organic solvent are transported into the stirring and washing tank 101, the driving component 102 is started, and the stirring rod 103 is driven by the driving component 102 to rotate. Driven by the stirring rod 103, the stirring blades 104 will also rotate together, so as to stir the carbon black and the organic solvent in the stirring and washing tank 101. The rotation speed range of the driving component 102 is 1000 rpm to 50000 rpm. The specific adjustment method can be determined according to the degree of mixing of the carbon black and the organic solvent. In this process, a picture of the mixing state inside the stirring and washing tank 101 can be taken for identification, or a transparent window can be opened on the side wall of the stirring and washing tank 101. The mixing state of the carbon black and the organic solvent can also be seen through the transparent window, and the rotation speed of the driving component 102 can be adjusted according to the mixing state.

[0109] In the design of the stirring and washing component of the present invention, the mixed flow stirring technology and the adjustable speed driving component 102 are adopted to ensure the high mixing of the organic solvent and the carbon black, and then deeply remove the organic impurities on the surface of the carbon black. The precise speed control (1000rmp to 50000rmp) ensures the uniformity and efficiency of the mixing, and has a significant effect on improving the purity and activity of the carbon black. The automated design of the carbon black storage tank 2 and the organic solvent storage tank 3 realizes the precise and continuous conveying of the materials by connecting with the feed port of the stirring and washing component. This design avoids the instability of manual operation, ensures the continuity of the production process and the accurate measurement of the materials. The high efficiency and precise control of the driving component 102 reduce the energy consumption in the production process, and also reduce the waste of raw materials caused by uneven mixing, thereby reducing the production cost as a whole and improving the economic benefits. The modular design of the stirring and washing component enables it to flexibly adjust the stirring speed and mixing time according to the production requirements and the characteristics of the raw materials, creating conditions for realizing continuous and large-scale production. At the same time, the modular design also facilitates the daily maintenance and upgrading of the equipment, and prolongs the service life of the equipment. The stirring and washing component of the present invention takes environmental protection into full consideration in its design. Through efficient organic solvent removal, the residual solvent and emission in the subsequent treatment process are reduced, the pollution to the environment is reduced, and it complies with the principles of green chemistry and circular economy. The deeply purified carbon black raw material provides a purer and more active basic material for the subsequent pickling, drying and expansion treatment. This series of pretreatments can significantly improve the performance of the final expanded graphite material, such as conductivity, heat resistance and adsorption capacity, meeting the high requirements in the field of new energy and high-performance materials.

[0110] In summary, the carbon black processing device of the present application not only achieves deep purification and cost savings of waste tire carbon black in the pretreatment stage, but also provides high-quality raw materials for subsequent graphitization and expansion treatment, which has important practical value for promoting the resource utilization of waste tires and the development of green circular economy.

[0111] A filtering and drying component, wherein the inlet of the filtering and drying component is connected to the outlet end of the stirring and washing component, so as to filter and dry the first carbon black to obtain the first carbon black material.

[0112] A filter unit 401, wherein a filter component is provided in the filter unit 401 to filter the mixed material from the stirring and washing component;

[0113] A vacuum part 402, which is disposed below the filter part 401 to vacuum dry the mixed material after being filtered by the filter part 401 to obtain a first carbon black material;

[0114] The vacuum degree in the vacuum part 402 is less than or equal to 100Pa.

[0115] Specifically, in this embodiment, the filtering and drying component includes a filtering part 401, which is a filtering barrel. A filtering component is provided in the filtering part 401, and the filtering component can be a filter net. After the filtering component filters the mixed material, it enters the vacuum part 402 below it for vacuum drying to obtain the first carbon black material, wherein the vacuum degree in the vacuum part 402 is less than or equal to 100Pa.

[0116] The filter screen used in the filter unit 401 has a precisely designed pore size, which can effectively remove impurities and solvent residues in the mixed material after stirring and washing, without hindering the passage of the carbon black material. This design ensures the purity of the first carbon black material and provides a purer raw material for subsequent pickling and graphitization treatment. The filtered carbon black material is vacuum dried in the vacuum unit 402. The design of a vacuum degree less than or equal to 100Pa can effectively promote the rapid evaporation of the solvent without damaging the carbon black structure, thereby improving the drying efficiency and the quality of the carbon black material. In addition, vacuum drying can prevent impurities in the air from re-contaminating the carbon black material, further improving the purity of the product. Drying under a vacuum environment can significantly reduce the drying temperature and energy consumption compared to normal pressure drying. At the same time, the rapid solvent evaporation characteristics of vacuum drying also shorten the drying time, thereby reducing production costs and improving economic benefits. During the vacuum drying process, the organic solvent is enclosed in the system and evaporates, reducing the emission of solvents to the environment, reducing pollution to the environment, and embodying the principles of green chemistry. The surface activity and graphitization degree of the first carbon black material that has been deeply purified and efficiently dried are significantly improved, laying the foundation for the subsequent conversion into expanded graphite material. Carbon black materials with high purity are more conducive to the uniform embedding of intercalants, generating expanded graphite materials with complete structure and excellent performance. Filtration and vacuum drying are carried out continuously in one component, which simplifies the production process, reduces the transfer links of carbon black materials, and improves production efficiency. Both the filter part 401 and the vacuum part 402 are made of pressure-resistant materials and can withstand pressure changes during the working process. The closed design of vacuum drying also improves the safety of the production process and reduces operational risks.

[0117] In summary, the filtering and drying component in this embodiment not only achieves accurate filtration and efficient drying of the mixed material, but also improves the purity and activity of the carbon black material, providing strong support for the subsequent production of high value-added expanded graphite materials. At the same time, the environmental protection and economic efficiency of its design meet the needs of modern industrial production for green and sustainable development.

[0118] A pickling and drying component, wherein the inlet end of the pickling and drying component is connected to the outlet end of the filtering and drying component, so as to pickle and dry the first carbon black to obtain an initial graphite material;

[0119] Pickling and drying parts include:

[0120] Acid supply component 501;

[0121] The pickling section 502 is connected to the acid solution supplying component 501 to transport the acid solution into the pickling section 502 to pickle the second carbon black in the pickling section 502 to obtain a pickling product;

[0122] A drying section 503, which is disposed at one side of the pickling section 502, and a vacuum environment is present in the drying section 503, so as to dry the pickling product at a second predetermined drying temperature to obtain an initial graphite material;

[0123] The vacuum degree of the drying part 503 is less than or equal to 100 Pa, and the second predetermined drying temperature is room temperature to 100° C.

[0124] Specifically, the pickling and drying component includes an acid liquid supply component 501 and a pickling section 502. The pickling section 502 is connected to the acid liquid supply component 501 to transport the acid liquid into the acid liquid supply component 501, and pickle the second carbon black in the acid liquid supply component 501 to obtain a pickled product. When the pickled product is transported to the drying section 503, because the drying section 503 is in a vacuum environment, the pickled product in the drying section 503 is dried under the conditions of a vacuum degree less than or equal to 100 Pa and a second predetermined drying temperature of room temperature to 100°C to obtain an initial graphite material.

[0125] Specifically, the efficient cooperation between the acid supply component 501 and the pickling part 502 can ensure that the second carbon black material is fully in contact with the acid during the pickling process, effectively remove residual inorganic impurities such as metal ions, ash, etc., and improve the purity of the carbon black material. The surface activity and graphite degree of the carbon black after deep pickling are further improved, providing a better quality raw material for subsequent graphitization and expansion treatment. The pickling drying component is designed to dry under vacuum conditions, and the vacuum degree is less than or equal to 100Pa. This design not only improves the drying efficiency, but also effectively controls the emission of harmful gases generated during the pickling process, reducing pollution to the environment. At the same time, low-temperature drying under a vacuum environment avoids structural damage and performance degradation of the pickling product, reflecting the principles of green chemistry and sustainable development. The second predetermined drying temperature range in the drying part 503 is set to room temperature to 100°C. This temperature range can ensure that the moisture and residual acid in the pickling product evaporate rapidly without adversely affecting the product structure. The drying conditions of room temperature to 100°C reduce energy consumption, improve production efficiency, and have a significant effect on reducing costs and improving economic benefits. The initial graphite material obtained after pickling and vacuum drying has significantly improved physical and chemical properties. The improvement in purity and activity means that the material can form a more uniform and structurally stable expanded graphite in the subsequent expansion treatment, which has higher electrical conductivity, heat resistance and adsorption performance, and meets the application requirements of high-performance materials and new energy fields. The pickling part 502 and the drying part 503 of the pickling and drying components are made of acid corrosion-resistant and high-pressure resistant materials, which can withstand chemical erosion and pressure changes during pickling and vacuum drying, and extend the service life of the equipment. The drying treatment under a vacuum environment also reduces safety hazards in operation and improves production safety. The design of the pickling and drying components supports continuous and automated production, and can automatically complete the steps of acid supply, pickling treatment, filtration and vacuum drying, reducing manual intervention, improving production efficiency and product consistency, and providing the possibility for large-scale production.

[0126] Through the above design and optimization, the pickling and drying component in this embodiment not only achieves deep pickling and efficient drying of the second carbon black material, but also significantly improves the performance and quality of the initial graphite material, laying a solid foundation for the industrial production of converting waste tire carbon black into high-value-added expanded graphite materials. At the same time, its environmental protection, economic and efficient characteristics meet the requirements of modern industrial production for sustainable development.

[0127] The expansion component 6 has an inlet end connected to the outlet end of the pickling and drying component to post-treat the initial graphite to obtain a graphite material.

[0128] Specifically, the expansion component 6 is a key component of the present invention, and its design is intended to post-process the initial graphite material after pickling and drying, and convert it into an expanded graphite material with high added value through intercalation and high-temperature expansion. The specific implementation is as follows: The inlet end of the expansion component 6 is tightly connected to the outlet end of the pickling and drying component to ensure that the initial graphite material after pickling and drying can enter the expansion component 6 smoothly and without residue. Before entering the expansion component, the state of the initial graphite material can be further adjusted by preheating or pretreatment steps to optimize the expansion effect. In the expansion component 6, an intercalation agent such as concentrated sulfuric acid, concentrated hydrochloric acid, and concentrated nitric acid is used to mix the intercalation agent with the initial graphite material. The amount of intercalation agent added and the mixing time need to be adjusted according to the characteristics of the initial graphite material and the expected performance of the expanded graphite. The intercalation process is carried out at room temperature, and the duration is set to 2 hours to 12 hours to ensure that the intercalation agent can be fully embedded in the graphite layer to form a graphite intercalation compound. After the intercalation treatment is completed, the graphite material containing the intercalation agent is placed in a high temperature environment for expansion treatment. The expansion temperature needs to be set according to the type and decomposition temperature of the intercalant, usually ranging from 80°C to 600°C. High-temperature expansion is a key step in the production of expanded graphite materials. It causes the intercalant to decompose rapidly, release gas, generate pressure between graphite layers, and cause the graphite interlayer spacing to increase instantly, thereby generating fluffy expanded graphite materials. The expanded graphite material needs to be briefly collected and cooled in the expansion component 6 to stabilize its structure and prevent performance degradation caused by excessive expansion. The cooling process needs to be controlled within a safe temperature range to avoid re-oxidation or structural damage of the graphite material. Through intercalation and high-temperature expansion treatment, the interlayer spacing of the initial graphite material is significantly increased, forming an expanded graphite material with high fluffiness and porous structure. The physical and chemical properties of this material, such as electrical conductivity, adsorption performance, and high temperature resistance, have been significantly improved, and it is suitable for high-performance battery electrodes, catalyst carriers, thermal insulation materials and other fields. The design of the expansion component 6 adopts environmentally friendly intercalants and expansion processes, reduces the emission of harmful gases, reduces the impact of the production process on the environment, and meets the requirements of green chemistry and sustainable development. Precise control of intercalation and high temperature expansion treatment achieves efficient conversion of initial graphite material into expanded graphite material, improving production efficiency and product quality stability. The expansion component 6 of the present invention, combined with a complete set of innovative devices, can convert carbon black recovered from waste tires into high value-added expanded graphite material, effectively improving the comprehensive utilization value of waste tire carbon black and promoting the development of circular economy.

[0129] The design of the expansion component 6 can be adjusted according to different types of intercalants, expansion temperature and expansion time, providing process flexibility for the production of expanded graphite materials with different performance requirements and meeting the diversified needs of the market. The high-temperature expansion process of the expansion component 6 ensures the safety and reliability of the production of expanded graphite materials through precise temperature and time control, avoiding safety hazards and unstable performance during the production process.

[0130] In summary, the expansion component 6 of the present invention realizes the efficient and environmentally friendly conversion of waste tire carbon black into high value-added expanded graphite material through the innovative treatment method of intercalation and high-temperature expansion, providing strong technical support for the development of waste tire resource utilization and high-performance materials.

[0131] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0132] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0133] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0134] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0135] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0136] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for treating carbon black, characterized in that: include: Obtaining a first set content of carbon black to be treated; Mixing the carbon black to be treated with an organic solvent to remove impurities attached to the carbon black to be treated to obtain a mixed material; filtering the mixed material under set conditions, and drying the filtered product at a first preset drying temperature to obtain a first carbon black material; Using an acid solution with a second set content to acid-wash the first carbon black material to obtain an initial graphite material; The initial graphite is post-processed to obtain expanded graphite material.

2. The carbon black processing method according to claim 1, characterized in that The step of post-processing the initial graphite material to obtain the expanded graphite material comprises: obtaining an intercalant; Adding the intercalant to the initial graphite material, and leaving it to stand for a first set time under the conditions of room temperature and concentrated acid; After the cumulative time reaches the first set time, the obtained product system is expanded at a set temperature to obtain an initial graphite material; Among them, the first set time is 2h to 12h, the set temperature is 80℃ to 600℃, and the concentrated acid is any one of concentrated sulfuric acid, concentrated hydrochloric acid and concentrated nitric acid, or a mixture of any two of them, or a mixture of the concentrated sulfuric acid, the concentrated hydrochloric acid and the concentrated nitric acid.

3. The carbon black processing method according to claim 2, characterized in that: The step of mixing the carbon black to be treated with an organic solvent to obtain a mixed material comprises: Adding the organic solvent in a third set content to the carbon black to be treated, and stirring for a second set time to obtain the mixed material; Among them, the third set content is 10L, the second set time is 1h to 8h, and the organic solvent is any one of alkanes, halogenated hydrocarbons, and DMF.

4. The carbon black processing method according to claim 1, characterized in that The set conditions include: placing the filtered product in a vacuum environment; and the first predetermined drying temperature is 100 degrees Celsius.

5. The carbon black processing method according to claim 1, characterized in that: The step of pickling the first carbon black material with the acid solution having the second set content to obtain the initial graphite material comprises: adding the acid solution of the second set content to the first carbon black material, and performing pickling for a third set time to obtain a pickling product system; placing the acid-washed product system under a vacuum environment, and drying at a temperature of 100° C. to 200° C. for a fourth set time to obtain a dried product system; Heating the dried product system to obtain the initial graphite material; Wherein, the temperature of the initial graphite is 3000° C., and the fourth set time is 2 h to 12 h.

6. The method for treating carbon black according to claim 2, characterized in that: The intercalant is any one of concentrated sulfuric acid, concentrated hydrochloric acid and concentrated nitric acid.

7. A carbon black processing device, characterized in that: The carbon black processing device is applied to the method according to any one of claims 1 to 6, and the carbon black processing device comprises: A stirring and washing component, wherein the stirring and washing component has a first feed inlet and a second feed inlet; A carbon black storage tank (2), wherein the outlet of the carbon black storage tank (2) is connected to the first feed port so as to deliver the carbon black to the stirring and washing component in real time; an organic solvent storage tank (3), wherein the outlet of the organic solvent storage tank (3) is in communication with the second feed port, so as to deliver the organic solvent to the stirring and washing component in real time and mix and wash the organic solvent with the carbon black in the stirring and washing component to obtain a mixed material; a filtering and drying component, wherein the inlet of the filtering and drying component is connected to the outlet end of the stirring and washing component, so as to filter and dry the first carbon black to obtain a first carbon black material; A pickling and drying component, wherein the inlet end of the pickling and drying component is connected to the outlet end of the filtering and drying component, so as to pickle and dry the first carbon black to obtain an initial graphite material; An expansion component (6), the inlet end of the expansion component (6) is connected to the outlet end of the pickling and drying component to post-treat the initial graphite to obtain a graphite material.

8. The carbon black processing device according to claim 7, characterized in that The stirring and washing component comprises: A stirring and washing tank (101), wherein the stirring and washing tank (101) has a stirring and washing space, and the stirring and washing tank (101) has the first feed inlet and the second feed inlet; A driving component (102), wherein the driving component (102) is arranged on the stirring and washing tank (101); A stirring rod (103), the stirring rod (103) being arranged in the stirring washing tank (101), one end of which is connected to the driving end of the driving component (102); a stirring blade (104), the stirring blade (104) being arranged at one end of the stirring rod (103) for stirring and washing the carbon black and the organic solvent in the stirring and washing space under the driving action of the driving component (102) to obtain the mixed material; Wherein, the rotation speed range of the driving component (102) is 1000 rpm to 50000 rpm.

9. The carbon black processing device according to claim 7, characterized in that The filtering and drying component comprises: A filter unit (401), wherein a filter component is provided in the filter unit (401) to filter the mixed material from the stirring and washing component; A vacuum section (402), the vacuum section (402) being disposed below the filter section (401) to vacuum dry the mixed material after filtering through the filter section (401) to obtain the first carbon black material; Wherein, the vacuum degree in the vacuum part (402) is less than or equal to 100Pa.

10. The carbon black processing device according to claim 7, characterized in that: The pickling and drying components include: Acid supply component (501); A pickling section (502), wherein the pickling section (502) is connected to the acid solution supply component (501) so as to transport the acid solution into the pickling section (502) so as to pickle the second carbon black in the pickling section (502) to obtain a pickling product; A drying section (503), the drying section (503) being arranged at one side of the pickling section (502), the drying section (503) presenting a vacuum environment so as to dry the pickling product at a second predetermined drying temperature to obtain the initial graphite material; Wherein, the vacuum degree of the drying section (503) is less than or equal to 100 Pa, and the second predetermined drying temperature is room temperature to 100°C.

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