A device for regenerating activated carbon from pyrolysis carbon black
By setting up a process with a magnetic separator and an electromagnetic stirring assembly, the problem that existing equipment cannot effectively remove magnetic substances from carbon black has been solved, achieving efficient preparation of activated carbon and improving its adsorption performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI HAOYUE ECOLOGICAL TECH CO LTD
- Filing Date
- 2025-07-01
- Publication Date
- 2026-05-29
Smart Images
Figure CN224298909U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of resource recycling equipment technology, specifically to a device for regenerating activated carbon from pyrolysis carbon black. Background Technology
[0002] With rapid economic development and the increasing prevalence of automobiles, the amount of waste tires has also increased, leading to indiscriminate disposal and "black pollution." Because tires are relatively expensive and difficult to degrade in nature, waste tires pose a significant threat to the environment, ecology, and human health. Therefore, resource recycling and reuse of waste tires are generally necessary. Common existing methods for recycling waste tires include direct incineration and pyrolysis to produce carbon black. Pyrolysis technology is considered the most effective method for utilizing waste tires, typically involving pyrolyzing waste tires and using the residue as carbon black. However, carbon black products obtained through pyrolysis in existing technologies have high environmental pollution levels, high ash content, poor dispersibility, and poor compatibility with rubber, resulting in low usability.
[0003] Therefore, how to expand the applications of pyrolysis carbon black and increase its added value is an urgent problem that needs to be solved. Activated carbon, also known as activated carbon black, is an amorphous carbon with a unique porous structure, large specific surface area, strong adsorption capacity, and wide range of applications. In real life, activated carbon is mainly used in air purification, urban sewage treatment, advanced drinking water treatment, impurity removal from printing inks, and product decolorization. Therefore, activated carbon is generally prepared by regenerating carbon black obtained from pyrolysis to improve its utilization value. Existing technologies for producing activated carbon from carbon black typically involve filtration, acid washing, and alkali washing to obtain activated carbon. Because carbon black obtained by pyrolysis contains a large amount of magnetic materials (such as iron, aluminum, steel wire, etc.), the presence of these materials will greatly interfere with the performance of the prepared activated carbon. Existing equipment for regenerating activated carbon from pyrolysis carbon black cannot effectively remove magnetic materials (such as iron, aluminum, steel wire, etc.) from the carbon black, resulting in activated carbon containing a lot of magnetic materials. The presence of these magnetic materials will affect the pore structure of activated carbon through the magnetic field, and affect the atomic structure and functional distribution of the activated carbon surface, thereby affecting the adsorption effect of activated carbon. Utility Model Content
[0004] To address the technical problem that existing equipment cannot effectively remove magnetic substances from carbon black, resulting in poor adsorption properties of the prepared activated carbon, this invention provides an apparatus for regenerating activated carbon from pyrolyzed carbon black.
[0005] This utility model is achieved using the following technical solution: a device for regenerating activated carbon from pyrolysis carbon black, comprising a magnetic separator, a grinder, a sieve, an acid-alkali cleaning machine, and an activation device connected in sequence. The grinder grinds the magnetically separated carbon black and conveys it to the sieve. The sieve passes the carbon black through a sieve and conveys the sieved carbon black to the acid-alkali cleaning machine. The carbon black cleaned by the acid-alkali cleaning machine is then conveyed to the activation device, which activates the acid-alkali cleaned carbon black into activated carbon. The magnetic separator includes a first magnetic separator and a second magnetic separator. The first magnetic separator includes a housing and an electromagnetic stirring assembly, which is rotatably installed inside the housing. The housing has an outlet. The second magnetic separator includes a magnetic conveyor belt, a receiving bin, and a receiving bin 2. The first end of the magnetic conveyor belt is positioned directly below the outlet, and the second end of the magnetic conveyor belt is inclined downwards and extends into the receiving bin 1. The magnetic conveyor belt is used for secondary magnetic separation of the carbon black separated by the first magnetic separator. The receiving bin 1 stores the carbon black after magnetic separation by the magnetic conveyor belt. The receiving bin 2 is located below the first end. A scraper is provided on the receiving bin 2. The scraper is located below the magnetic conveyor belt and in contact with the surface of the magnetic conveyor belt. The scraper is used to scrape the magnetic material on the magnetic conveyor belt into the receiving bin 2 when the magnetic conveyor belt rotates.
[0006] In a typical technical solution of this utility model, the shell is a hollow cylindrical structure, and the bottom plate of the shell protrudes upward to form a frustum structure; the electromagnetic stirring assembly includes a rotating shaft and at least one inclined rod, the axis of the rotating shaft coincides with the axis of the frustum; the inclined rod is installed on the rotating shaft and is used to scrape the inclined surface of the frustum when the rotating shaft rotates.
[0007] As a further improvement of this utility model, the first magnetic separator also includes a driving component, which is connected to a rotating shaft, and the driving component drives the inclined rod to rotate through the rotating shaft.
[0008] As a further improvement of this utility model, the electromagnetic stirring assembly also includes a vertical rod, which is fixed to the end of the inclined rod. The vertical rod is used to scrape the inner wall of the shell when the rotating shaft rotates.
[0009] As a further improvement of this utility model, the electromagnetic stirring assembly also includes a crossbar, one end of which is fixedly connected to the end of the vertical bar, and the other end of which is connected to a rotating shaft. The crossbar, the vertical bar, and the diagonal bar form a C-shaped stirring section.
[0010] In a typical technical solution of this utility model, baffles are installed on both sides of the magnetic conveyor belt, and the baffles are symmetrically arranged on both sides of the magnetic conveyor belt; the length of the scraper is less than or equal to the distance between the two baffles.
[0011] As a further improvement of this utility model, the receiving bin 2 includes a housing 2, the housing 2 is provided with a feed inlet 1, the feed inlet 1 faces the first end of the magnetic conveyor belt, and a scraper is vertically installed on the housing 2 and faces the feed inlet 1. The scraper is used to scrape off the magnetic material on the magnetic conveyor belt when the magnetic conveyor belt rotates and transport it into the housing 2 through the feed inlet 1.
[0012] As a further improvement of this utility model, the receiving bin includes a housing three, and the housing three is provided with a feeding port two. The width of the feeding port two is greater than the width of the magnetic conveyor belt, and the magnetic conveyor belt extends into the housing three through the feeding port two.
[0013] As a further improvement of this utility model, the magnetic separation device also includes a housing four, in which the first magnetic separator and the second magnetic separator are both installed, with the first magnetic separator positioned above the second magnetic separator.
[0014] In a typical technical solution of this utility model, the activation device includes a filter press, a dryer, and an activation furnace. The two ends of the filter press are connected to an acid-alkali cleaning machine and a dryer, respectively. The outlet of the dryer is connected to the activation furnace. The filter press is used to filter the carbon black cleaned by the acid-alkali cleaning machine and transport the filtered carbon black to the dryer for drying. The carbon black dried by the dryer is then transported to the activation furnace for activation.
[0015] In a typical technical solution of this utility model, the equipment for regenerating activated carbon from pyrolysis carbon black further includes a waste gas treatment device. The waste gas treatment device is connected to an acid and alkali cleaning machine and is used to absorb and treat the waste gas generated by the acid and alkali cleaning machine.
[0016] The technical solution provided by this utility model has the following beneficial effects:
[0017] (1) The equipment for regenerating activated carbon from pyrolysis carbon black provided by this utility model is equipped with a first magnetic separator and a second magnetic separator. The first magnetic separator can initially remove magnetic substances from the carbon slag, and the second magnetic separator can perform secondary magnetic separation on the carbon slag after demagnetization by the first magnetic separator, thereby greatly improving the removal effect of magnetic substances in the carbon slag and greatly reducing the content of magnetic substances in the carbon black that needs to be activated, thereby improving the adsorption effect of the prepared activated carbon.
[0018] (2) The equipment for regenerating activated carbon from pyrolysis carbon black provided by this utility model forms a frustum structure by protruding upward at the bottom of the shell, and the inclined rod in the electromagnetic stirring assembly can scrape the inclined surface of the frustum under the rotation of the rotating shaft. Thus, the inclined rod can stir the carbon slag in the shell and adsorb the magnetic substances in the stirred carbon slag. At the same time, the inclined rod can also scrape the inclined surface of the frustum, so that the carbon slag in the shell will not accumulate at the bottom of the shell but will be discharged along the outlet under the push of the inclined rod, thereby accelerating the removal speed of magnetic substances in the carbon slag by the first magnetic separator. Attached Figure Description
[0019] Figure 1 A flowchart of the equipment for regenerating activated carbon from pyrolysis carbon black provided by this utility model.
[0020] Figure 2 This is a schematic diagram of the internal structure of the magnetic separator provided by this utility model.
[0021] Figure 3 This is a schematic diagram of the internal structure of the magnetic device provided by this utility model from another angle.
[0022] Figure 4 This is a schematic diagram of the internal structure of the housing provided by this utility model.
[0023] Figure 5 A schematic diagram of the electromagnetic stirring assembly provided by this utility model.
[0024] The diagram is labeled as follows: 1. Magnetic separator; 11. First magnetic separator; 111. Shell 1; 112. Electromagnetic stirring assembly; 113. Rotating shaft; 114. Inclined bar; 115. Vertical bar; 116. Horizontal bar; 12. Second magnetic separator; 121. Magnetic conveyor belt; 122. Baffle; 123. Shell 2; 124. Feed inlet 1; 125. Scraper; 126. Shell 3; 127. Feed inlet 2; 13. Shell 4; 2. Grinding mill; 3. Screening machine; 4. Acid and alkali cleaning machine; 5. Activation device; 51. Filter press; 52. Dryer; 53. Activation furnace; 6. Waste gas treatment device. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.
[0026] This embodiment provides a device for regenerating activated carbon from pyrolysis carbon black. It is used to perform a series of treatments on carbon black generated from waste tires after thermal pyrolysis, thereby activating the carbon black into activated carbon and increasing its utilization value. Please refer to... Figure 1As shown, the equipment includes a magnetic separator 1, a grinder 2, an acid-alkali cleaning machine 4, and an activation device 5 connected in sequence. The magnetic separator 1 removes magnetic materials (such as iron filings, aluminum filings, steel wire, etc.) from the carbon slag discharged from the pyrolysis reactor, forming coarse carbon black. The coarse carbon black is then fed to the grinder 2 for grinding, which produces a particle size similar to that of industrial carbon black. The ground coarse carbon black is then fed to a sieve 3 for sieving, yielding carbon black powder with a particle size of approximately 200-400 mesh. The sieved carbon black powder is then fed to the acid-alkali cleaning machine 4 for cleaning. The acid-alkali cleaning machine 4 is equipped with a filter screen and a stirring shaft, with the stirring shaft positioned above the filter screen. The acid-alkali cleaning machine 4 is also equipped with a carbon black inlet, an acid inlet, an alkali inlet, and a water inlet. The carbon black inlet can be connected to a screening machine 3 via a pipeline. The carbon black powder sieved by the screening machine 3 can be conveyed into the acid-alkali cleaning machine 4 through the carbon black inlet. The carbon black cleaned by the acid-alkali cleaning machine 4 can be conveyed to an activation device 5, where it can be activated into activated carbon. This achieves the goal of activating carbon black from the pyrolysis of waste tires into activated carbon, thereby improving the utilization rate of waste tires.
[0027] Please refer to Figures 2 to 4The magnetic separation device 1 includes a first magnetic separator 11 and a second magnetic separator 12. The first magnetic separator 11 is positioned above the second magnetic separator 12. The first magnetic separator 11 includes a housing 111 and an electromagnetic stirring assembly 112, which is rotatably installed inside the housing 111. The housing 111 is used to hold the carbon black that needs to be activated into activated carbon. The housing 111 can be a hollow cylindrical structure, with an outlet on its side wall located at the upper end of the bottom plate. The bottom plate of the housing 111 protrudes upward to form a frustum structure, and the diameter of the lower base circle of the frustum can be smaller than the diameter of the bottom plate. The electromagnetic stirring assembly 112 is used to stir the carbon slag inside the housing 111. In this embodiment, the electromagnetic stirring assembly 112 can be made of a material that generates magnetism when electricity is applied, such as iron or silicon steel plate. Therefore, in practical use, the electromagnetic component needs to be energized. When energized, it generates magnetism, which attracts magnetic substances from the carbon slag. Since the carbon slag is non-magnetic, it slides down the inclined surface of the frustum under gravity to the bottom plate and is discharged through the outlet. The outlet is located at the top of the bottom plate so that when the electromagnetic stirring component 112 stirs the carbon slag inside the shell 111, the magnetic substances in the slag are attracted by the electromagnetic stirring component 112, and the slag is discharged through the outlet along the inclined surface of the frustum, thus achieving the separation of the carbon slag and magnetic substances. A magnetic substance outlet is also provided on the side wall of the shell 111, located at the top of the bottom plate. Furthermore, when too much magnetic substance is attracted by the electromagnetic stirring component 112, or when carbon black treatment is complete, the carbon slag inside the shell 111 is first discharged through the outlet, then the outlet and the drive mechanism of the magnetic stirring component are closed, and the magnetic substance outlet is opened. A collection box is located below the magnetic substance outlet to collect the magnetic substance discharged from the outlet. Then turn off the power, so that all the magnetic material adsorbed on the electromagnetic stirring component 112 falls into the housing 111. Then restart the drive unit, which drives the electromagnetic stirring component 112 to rotate, so that the adsorbed magnetic material can slide down the inclined surface of the truncated cone to the bottom and enter the storage box through the magnetic material outlet, thereby achieving the purpose of uniformly collecting the magnetic material.
[0028] Please refer to Figure 3 and Figure 5The electromagnetic stirring assembly 112 may include a rotating shaft 113 and at least one inclined rod 114. The first magnetic separator 11 may also include a driving component. The rotating shaft 113 is rotatably mounted inside the housing 111. One end of the rotating shaft 113 away from the housing 111 is connected to the driving component. One end of the inclined rod 114 is fixed to the rotating shaft 113. The axis of the rotating shaft 113 coincides with the axis of the frustum. In actual use, the driving component can drive the inclined rod 114 to rotate via the rotating shaft 113. The inclination angle of the inclined rod 114 is the same as the inclination angle of the inclined surface of the frustum, and the bottom of the inclined rod 114 is in contact with the inclined surface of the frustum. When the rotating shaft 113 rotates, the inclined rod 114 can scrape off the carbon slag on the inclined surface of the frustum as the rotating shaft 113 rotates, so that the carbon slag in the housing 111 can be discharged along the outlet under the scraping action of the inclined rod 114.
[0029] It is understandable that the electromagnetic stirring assembly 112 can be powered by its own internal battery. This design aims to prevent the wires from becoming tangled when the electromagnetic stirring assembly 112 rotates. In this embodiment, when magnetic separation of the carbon slag inside the shell 111 is required, the power is first turned on, at which point the electromagnetic stirring assembly 112 generates magnetism. Then, the drive unit is activated, and the drive unit drives the inclined rod 114 to rotate via the rotating shaft 113. This allows the rotating shaft 113 and the inclined rod 114 to not only stir the carbon slag inside the shell 111 but also to attract magnetic materials within the shell 111. Simultaneously, while stirring, the carbon slag slides down the inclined surface of the frustum to the bottom plate and is discharged through the outlet, thus achieving the first removal of magnetic materials from the carbon slag.
[0030] Please refer to Figure 3 and Figure 5The electromagnetic stirring assembly 112 may further include a vertical rod 115, which is fixed to the end of the inclined rod 114, and the outer side of the vertical rod 115 contacts the inner wall of the housing 111. When the rotating shaft 113 rotates, the vertical rod 115 can scrape the inner wall of the housing 111. Simultaneously, the vertical rod 115 can also generate magnetism under energized conditions, thereby achieving the purpose of adsorbing magnetic materials inside the housing 111. The electromagnetic stirring assembly 112 may further include a horizontal rod 116, one end of which is installed at the end of the vertical rod 115, and the other end of which is fixedly installed on the rotating shaft 113. The horizontal rod 116, the vertical rod 115, and the inclined rod 114 can form a C-shaped stirring section. The horizontal rod 116 can enhance the strength of the entire stirring section and also adsorb horizontally oriented magnetic materials, improving the adsorption effect of the entire stirring section on magnetic materials. The C-shaped stirring section increases the adsorption area and adsorption position of the electromagnetic stirring assembly 112. The C-shaped stirring section can effectively stir the carbon slag inside the shell 111, and at the same time, the stirring section can also adsorb magnetic substances in the carbon slag, thereby achieving the purpose of removing magnetic substances from the carbon slag.
[0031] Please refer to Figure 2 and Figure 3The second magnetic separator 12 includes a magnetic conveyor belt 121, a receiving bin one, and a receiving bin two. The first end of the magnetic conveyor belt 121 is positioned directly below the outlet, and the second end of the magnetic conveyor belt 121 is inclined downwards and extends into the receiving bin one. The inclination angle of the magnetic conveyor belt 121 can be 30°-45°. The magnetic conveyor belt 121 is used for secondary magnetic separation of the carbon slag discharged from the outlet. When the carbon slag in the housing one 111 is conveyed to the magnetic conveyor belt 121 through the outlet, the magnetic conveyor belt 121 adheres to the magnetic material, and the carbon slag can enter the receiving bin one along the magnetic conveyor belt 121 under gravity. The conveying direction of the magnetic conveyor belt 121 is from the second end to the first end. The purpose of this arrangement is to maximize the residence time of the carbon slag on the magnetic conveyor belt 121, thereby effectively removing the magnetic material from the carbon slag. Simultaneously, the conveying speed of the magnetic conveyor belt 121 is very slow, and its conveying speed needs to be less than the speed at which the carbon slag rolls downwards along the magnetic conveyor belt 121. This ensures that the carbon slag entering the magnetic conveyor belt 121 through the outlet can roll downwards along the magnetic conveyor belt 121 into the receiving bin one. Simultaneously, the magnetic material adhering to the magnetic conveyor belt 121 will move towards the receiving bin two under the movement of the magnetic conveyor belt 121. The receiving bin two is located below the first end and is equipped with a scraper 125. The upper end of the scraper 125 contacts the lower end of the magnetic conveyor belt 121, so that when the magnetic conveyor belt 121 rotates counterclockwise, the scraper 125 scrapes the magnetic material on the magnetic conveyor belt 121 into the receiving bin two. Through the above operation, secondary magnetic separation is achieved on the carbon slag discharged from the outlet, further removing magnetic materials from the carbon slag. In this embodiment, the first magnetic separator 11 and the second magnetic separator 12 can achieve secondary magnetic separation of magnetic materials in the carbon slag, thereby greatly improving the removal effect of magnetic materials in the carbon slag, significantly reducing the content of magnetic materials in the carbon black that needs to be activated, and thus improving the adsorption effect of the prepared activated carbon.
[0032] Please refer to Figure 2 and Figure 3 Both sides of the magnetic conveyor belt 121 are equipped with baffles 122, which are symmetrically arranged on both sides of the magnetic conveyor belt 121. The baffles 122 effectively block the carbon slag entering the magnetic conveyor belt 121, preventing it from falling from both ends. The length of the scraper 125 is less than or equal to the vertical distance between the two baffles 122. This allows the scraper 125 to effectively scrape off the magnetic material adhering to the magnetic conveyor belt 121. The side of the scraper 125 that contacts the magnetic conveyor belt 121 is provided with rubber, which effectively scrapes off the magnetic material while minimizing damage to the magnetic conveyor belt 121 during the process, thereby extending its service life.
[0033] Please refer to Figure 2 and Figure 3 The receiving bin includes a housing 126, on which a feed inlet 127 is provided. The width of the feed inlet 127 is greater than the width of the magnetic conveyor belt 121. The second end of the magnetic conveyor belt 121 extends into the housing 126 through the feed inlet 127. In this embodiment, by extending the second end of the magnetic conveyor belt 121 into the housing 126, all the carbon slag rolling down along the magnetic conveyor belt 121 can enter the housing 126, avoiding waste.
[0034] Please refer to Figure 2 and Figure 3 The receiving bin two includes a housing two 123, on which a feed inlet one 124 is provided, facing the first end of the magnetic conveyor belt 121. A scraper 125 is vertically installed on the housing two 123 and faces the feed inlet one 124. When the magnetic conveyor belt 121 rotates, the scraper 125 can scrape off the magnetic material adsorbed on the magnetic conveyor belt 121 and transport it into the housing two 123 through the feed inlet one 124, thereby achieving the purpose of collecting the magnetic material adsorbed on the magnetic conveyor belt 121. It can be understood that, in this embodiment, the second magnetic separator 12 can realize secondary magnetic separation of the carbon slag after demagnetization by the first magnetic separator 11, further improving the removal effect of magnetic material in the carbon slag, thereby improving the adsorption effect of the prepared activated carbon.
[0035] In this embodiment, the magnetic separation device 1 may further include a housing 13. The first magnetic separator 11 and the second magnetic separator 12 can both be installed inside the housing 13, with the first magnetic separator 11 positioned above the second magnetic separator 12. By using the housing 13, the magnetic separation process of the carbon slag can be conducted in a sealed environment, preventing the introduction of external impurities and improving the purity of the prepared activated carbon. The housing 13, housing 126, housing 123, and housing 111 can all be made of transparent material, facilitating observation of the magnetic separation process.
[0036] The discharge port of shell 3126 is connected to grinder 2. Grinder 2 is used to grind the carbon slag after two demagnetization operations and conveys the ground coarse carbon black to sieve 3. The carbon black powder after sieving by sieve 3 can be conveyed to acid and alkali washing machine 4 for cleaning. The reason for choosing acid and alkali washing machine 4 to clean carbon black powder in this embodiment is that the ash content and volatile matter in the carbon slag produced by thermal decomposition are between 15%-20% and 5%-9%, respectively. Therefore, acid washing and alkali washing are required to remove the ash content in the carbon slag. Finally, it is activated and regenerated by steam. Within a certain range, the higher the activation temperature, the longer the activation time, and the greater the amount of steam, the more carbon skeletons are formed, the more narrow pores there are, and the stronger the adsorption. However, excessively high temperature and excessive amount of steam will lead to over-activation, forming activated carbon with large pores and poor strength; while excessively low temperature will result in fewer carbon pores, which is not conducive to improving the iodine value of activated carbon. Therefore, in practical applications, it is necessary to select appropriate activation temperature, activation time, and activation steam volume to obtain activated carbon with good adsorption properties. For acid washing, sulfuric acid, nitric acid, or perchloric acid can be used, with an acid concentration of 10%-15%. For alkaline washing, sodium hydroxide or potassium hydroxide can be used, with an alkaline concentration of 20%-40%.
[0037] In this embodiment, the acid-base cleaning machine 4 can clean the incoming carbon black powder according to the following cleaning steps: First, the carbon black powder in the acid-base cleaning machine 4 is cleaned with 10% nitric acid for 1-2 hours. After cleaning, 20% sodium hydroxide is added to the acid-base cleaning machine 4 for 0.5-1 hour. Finally, deionized water is added to the acid-base cleaning machine 4 for multiple cleanings until the pH reaches 7-8, thus completing the cleaning operation of the entire carbon black powder. The cleaned carbon black powder can then be transported to the activation device 5.
[0038] Please refer to Figure 1The activation device 5 includes a filter press 51, a dryer 52, and an activation furnace 53. The two ends of the filter press 51 are connected to the acid-alkali cleaning machine 4 and the dryer 52, respectively. The outlet of the dryer 52 is connected to the activation furnace 53. The filter press 51 is used to filter the carbon black cleaned by the acid-alkali cleaning machine 4 and then convey the filtered carbon black to the dryer 52 for drying. The dried carbon black is then conveyed to the activation furnace 53 for activation. The cleaned carbon black powder can be pumped into the filter press 51 for filtration. The filtered carbon black can be conveyed to the dryer 52 via a screw conveyor belt. The dryer 52 is used to dry the filtered carbon black. The wastewater generated during drying can be pumped into a wastewater treatment system. The dried carbon black can be conveyed to the activation furnace 53 via a pneumatic conveying system for activation, thereby obtaining activated carbon product. In this embodiment, the activation furnace 53 can be a rotary kiln type activation furnace 53. The activation temperature of the activation furnace 53 can be 900-950℃. When drying and activating carbon black in a rotary kiln activation furnace 53, a small amount of air and water vapor can be introduced. This allows the waste gas adsorbed by the carbon black in the rotary kiln to be released at high temperatures and react with oxygen to generate water vapor, carbon dioxide, and other gases. The activated carbon after activation and regeneration can settle to the bottom of the rotary kiln. After cooling and packaging, the finished activated carbon is obtained. The rotary kiln utilizes a fish-scale seal with good sealing performance, effectively reducing energy consumption during the activation process. Furthermore, the continuous rotation of the rotary kiln ensures that the granulated activated carbon is fully agitated, resulting in more uniform contact between water vapor and the activated carbon, further improving its activation effect.
[0039] The equipment for regenerating activated carbon from pyrolysis carbon black also includes a waste gas treatment device 6, which is connected to an acid and alkali cleaning machine 4. The waste gas treatment device 6 is used to absorb and treat the waste gas generated by the acid and alkali cleaning machine 4.
[0040] The waste gas treatment device 6 may include a bag filter, an acid washing tower, an alkaline washing tower, and an activated carbon adsorption box connected in sequence. Acidic gases such as hydrogen sulfide and sulfur dioxide generated from carbon black acid washing, and waste gases such as ammonia generated after alkaline washing, are sequentially absorbed and treated by the bag filter, acid washing tower, alkaline washing tower, and activated carbon adsorption box before being discharged into the atmosphere. The bag filter is used to collect fine, dry dust in the waste gas; the acid washing tower utilizes the countercurrent contact between the gas and the acidic liquid to transfer pollutants in the waste gas into the liquid, thereby cleaning the gas. The alkaline washing tower generally uses an absorption and neutralization liquid such as sodium hydroxide to purify the acid mist waste gas, thereby purifying the waste gas. The activated carbon adsorption box uses activated carbon as the adsorption medium to remove organic pollutants in the waste gas through physical remediation, thereby achieving purification. Therefore, in this embodiment, the waste gas treatment device 6 can effectively treat the waste gas generated by the acid and alkali cleaning machine 4.
[0041] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A device for regenerating activated carbon from pyrolysis carbon black, characterized in that, It includes a magnetic separator (1), a grinder (2), a sieve (3), an acid and alkali cleaning machine (4), and an activation device (5) connected in sequence; the grinder (2) is used to grind the carbon black after magnetic separation and convey it to the sieve (3), the sieve (3) is used to sieve the carbon black and convey the sieved carbon black to the acid and alkali cleaning machine (4), the carbon black after cleaning by the acid and alkali cleaning machine (4) is conveyed to the activation device (5), and the activation device (5) is used to activate the carbon black after acid and alkali cleaning into activated carbon; The magnetic separator (1) includes a first magnetic separator (11) and a second magnetic separator (12). The first magnetic separator (11) includes a housing (111) and an electromagnetic stirring assembly (112). The electromagnetic stirring assembly (112) is rotatably installed inside the housing (111). The housing (111) has an outlet. The second magnetic separator (12) includes a magnetic conveyor belt (121), a receiving bin (1), and a receiving bin (2). The first end of the magnetic conveyor belt (121) is located directly below the outlet, and the second end of the magnetic conveyor belt (121) is inclined downward and extends into the receiving bin. Inside bin one; the magnetic conveyor belt (121) is used for secondary magnetic separation of the carbon black separated by the first magnetic separator (11); receiving bin one is used to store the carbon black after magnetic separation by the magnetic conveyor belt (121); receiving bin two is located below the first end, and a scraper (125) is provided on receiving bin two. The scraper (125) is located below the magnetic conveyor belt (121) and in contact with the surface of the magnetic conveyor belt (121); the scraper (125) is used to scrape the magnetic material on the magnetic conveyor belt (121) into receiving bin two when the magnetic conveyor belt (121) rotates.
2. The equipment for regenerating activated carbon from pyrolysis carbon black as described in claim 1, characterized in that, The first shell (111) is a hollow cylindrical structure, and the bottom plate of the first shell (111) protrudes upward to form a frustum structure; the electromagnetic stirring assembly (112) includes a rotating shaft (113) and at least one inclined rod (114), the axis of the rotating shaft (113) coincides with the axis of the frustum; the inclined rod (114) is installed on the rotating shaft (113), and the inclined rod (114) is used to scrape the inclined surface of the frustum when the rotating shaft (113) rotates.
3. The equipment for regenerating activated carbon from pyrolysis carbon black as described in claim 2, characterized in that, The first magnetic separator (11) also includes a driving component, which is connected to the rotating shaft (113). The driving component drives the inclined rod (114) to rotate through the rotating shaft (113).
4. The equipment for regenerating activated carbon from pyrolysis carbon black as described in claim 2, characterized in that, The electromagnetic stirring assembly (112) also includes a vertical rod (115), which is fixed to the end of the inclined rod (114). The vertical rod (115) is used to scrape the inner wall of the housing (111) when the rotating shaft (113) rotates.
5. The equipment for regenerating activated carbon from pyrolysis carbon black as described in claim 4, characterized in that, The electromagnetic stirring assembly (112) also includes a crossbar (116), one end of which is fixedly connected to the end of the vertical rod (115), and the other end of which is connected to the rotating shaft (113). The crossbar (116), the vertical rod (115), and the inclined rod (114) form a C-shaped stirring section.
6. The equipment for regenerating activated carbon from pyrolysis carbon black as described in claim 1, characterized in that, Both sides of the magnetic conveyor belt (121) are equipped with baffles (122), which are symmetrically arranged on both sides of the magnetic conveyor belt (121); the length of the scraper (125) is less than or equal to the distance between the two baffles (122).
7. The equipment for regenerating activated carbon from pyrolysis carbon black as described in claim 1, characterized in that, The receiving bin 2 includes a housing 2 (123), the housing 2 (123) is provided with a feed inlet 1 (124), the feed inlet 1 (124) faces the first end of the magnetic conveyor belt (121), the scraper (125) is vertically installed on the housing 2 (123) and faces the feed inlet 1 (124), the scraper (125) is used to scrape off the magnetic material on the magnetic conveyor belt (121) when the magnetic conveyor belt (121) rotates and transport it into the housing 2 (123) through the feed inlet 1 (124); And / or, the receiving bin includes a housing three (126), the housing three (126) is provided with a feeding port two (127), the width of the feeding port two (127) is greater than the width of the magnetic conveyor belt (121), and the magnetic conveyor belt (121) extends into the housing three (126) through the feeding port two (127).
8. The equipment for regenerating activated carbon from pyrolysis carbon black as described in claim 1, characterized in that, The magnetic separator (1) further includes a housing four (13), in which the first magnetic separator (11) and the second magnetic separator (12) are both installed, and the first magnetic separator (11) is positioned above the second magnetic separator (12).
9. The equipment for regenerating activated carbon from pyrolysis carbon black as described in claim 1, characterized in that, The activation device (5) includes a filter press (51), a dryer (52), and an activation furnace (53). The two ends of the filter press (51) are connected to the acid and alkali cleaning machine (4) and the dryer (52), respectively. The outlet of the dryer (52) is connected to the activation furnace (53). The filter press (51) is used to filter the carbon black after it has been cleaned by the acid and alkali cleaning machine (4) and to transport the filtered carbon black to the dryer (52) for drying. The carbon black dried by the dryer (52) is then transported to the activation furnace (53) for activation.
10. The equipment for regenerating activated carbon from pyrolysis carbon black as described in claim 9, characterized in that, The equipment for regenerating activated carbon from pyrolysis carbon black also includes a waste gas treatment device (6), which is connected to the acid-base cleaning machine (4). The waste gas treatment device (6) is used to absorb and treat the waste gas generated by the acid-base cleaning machine (4).