A pretreatment system for producing a carbon black dispersion liquid
By designing a pretreatment system for carbon black dispersion production, carbon black is modified using methods such as stirring, ultrasonication, and grinding. This solves the problem of carbon black particle aggregation and improves the dispersibility and stability of the carbon black dispersion.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 青州市博奥炭黑有限责任公司
- Filing Date
- 2025-05-27
- Publication Date
- 2026-06-16
AI Technical Summary
In existing technologies, carbon black particles tend to aggregate, resulting in poor dispersibility of carbon black dispersions.
A pretreatment system for carbon black dispersion production was designed, including multiple reaction vessels, grinding devices, separation devices, and drying devices. The carbon black is modified by means of stirring, ultrasonication, grinding, etc., to improve its dispersibility.
The modification process significantly improved the dispersibility and stability of the carbon black dispersion, achieving full contact and mixing between the carbon black material and the dispersant, thereby enhancing the dispersibility and drying efficiency of the carbon black product.
Smart Images
Figure CN224358335U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of carbon black production technology, and in particular to a pretreatment system for the production of carbon black dispersion. Background Technology
[0002] Carbon black dispersions are stable systems formed by uniformly dispersing carbon black particles in a liquid medium, and are widely used in coatings, inks, rubber, plastics, and other fields. The dispersibility, stability, and flowability of carbon black dispersions are common performance indicators. Current technologies typically involve first preparing a coarse slurry from carbon black, the dispersion medium, and the dispersant, and then grinding it to obtain the carbon black dispersion. However, because carbon black particles tend to aggregate, the resulting carbon black dispersion has poor dispersibility. Therefore, to address these issues, it is necessary to develop a pretreatment system for carbon black dispersion production. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide a pretreatment system for the production of carbon black dispersion, which modifies carbon black, reduces the aggregation of carbon black particles, and thus improves the dispersibility of carbon black dispersion.
[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:
[0005] A pretreatment system for producing carbon black dispersion includes a first reactor, the inlet of which is connected to a first adsorbent liquid conveying pipeline, the outlet of which is connected to a first grinding device, the inlet of which is connected to a first dispersant storage tank, the outlet of which is connected to a second reactor, the inlet of which is connected to a second adsorbent liquid conveying pipeline, the outlet of which is connected to a second grinding device, the inlet of which is connected to a second dispersant storage tank, the outlet of which is connected to a separation device, the outlet of which is connected to a drying device, and the outlet of which is connected to a modified carbon black product storage tank.
[0006] As an improved technical solution, both the first and second reaction vessels include a vessel body. The top of the vessel body is provided with a feed inlet and a liquid inlet, and the bottom of the vessel body is provided with a discharge outlet. The vessel body is provided with a jacket on the outside, and a stirring shaft is provided inside the vessel body. One end of the stirring shaft is connected to a motor, and the stirring shaft is provided with a first stirring component, a second stirring component, and a third stirring component. Multiple ultrasonic generators are respectively provided on both sides of the inner wall of the vessel body, and the multiple ultrasonic generators are electrically connected to a controller.
[0007] As an improved technical solution, the first stirring component and the third stirring component include a conical seat, on which multiple L-shaped stirring plates with hollow structures are provided.
[0008] As an improved technical solution, the second stirring component includes a trapezoidal stirring frame, on which a plurality of S-shaped stirring rods are provided.
[0009] As an improved technical solution, both the first grinding device and the second grinding device include a body. The top of the body is provided with a feed inlet and a dispersant inlet, and the bottom of the body is provided with a discharge outlet. The body is provided with a jacket on the outside. The interior of the body is provided with a grinding chamber and a storage chamber that are interconnected from top to bottom. The grinding chamber is provided with a rotating shaft. One end of the rotating shaft is connected to a motor. The rotating shaft is provided with a material dispersing component. Below the material dispersing component is a mixing component. Below the mixing component is a grinding component.
[0010] As an improved technical solution, the material dispersing component includes a V-shaped plate with a hollow structure disposed at the upper end of the rotating shaft, and the upper surface of the V-shaped plate is provided with a plurality of material dispersing rods of different heights.
[0011] As an improved technical solution, the mixing component includes a zigzag mixing plate disposed on a rotating shaft, and the mixing plate is provided with multiple mixing rods.
[0012] As an improved technical solution, the grinding component includes a grinding body, on which a plurality of grinding blocks are provided, and the end of the grinding block away from the grinding body is in clearance fit with the inner wall of the grinding chamber.
[0013] As an improved technical solution, the separation device is a centrifugal filter.
[0014] As an improved technical solution, the drying device is a fluidized bed dryer.
[0015] After adopting the above technical solution, the beneficial effects of this utility model are:
[0016] The pretreatment system for carbon black dispersion production includes a first reactor, the inlet of which is connected to a first adsorbent liquid conveying pipeline, the outlet of which is connected to a first grinding device, the inlet of which is connected to a first dispersant storage tank, the outlet of which is connected to a second reactor, the inlet of which is connected to a second adsorbent liquid conveying pipeline, the outlet of which is connected to a second grinding device, the inlet of which is connected to a second dispersant storage tank, the outlet of which is connected to a separation device, the outlet of which is connected to a drying device, and the outlet of which is connected to a modified carbon black product storage tank. Carbon black material with a particle size of 15-20μm is fed into the first reactor. Under the action of a pump, the first adsorbent liquid in the first adsorbent liquid delivery pipeline is transported into the first reactor. After heating, stirring and dispersing, a carbon black liquid loaded with the first adsorbent adsorption layer is obtained. Then, under the action of a pump, the carbon black liquid enters the first grinding device. At the same time, the dispersant in the first dispersant storage tank enters the first grinding device. After being heated, stirred, dispersed and ground, the liquid enters the second reactor. At the same time, under the action of a pump, the second adsorbent liquid in the second adsorbent liquid delivery pipeline enters the second reactor. After being heated, stirred and dispersed, a carbon black liquid loaded with the second adsorbent adsorption layer is obtained. Then, the liquid is transported into the second grinding device by a pump. At the same time, the second dispersant in the second dispersant storage tank enters the second grinding device. After being heated, stirred, dispersed and ground, the resulting carbon black liquid enters the separation device. The collected solid material is dried by a drying device and finally stored in a modified carbon black product storage tank. The pretreatment system described above is reasonably designed and achieves the modification and pretreatment of carbon black. The modified carbon black material obtained is then used to prepare carbon black dispersion, which greatly improves the dispersibility of the carbon black dispersion.
[0017] Both the first and second reaction vessels include a vessel body. The top of the vessel body has a feed inlet and a liquid inlet, and the bottom has a discharge outlet. The vessel body is surrounded by a jacket, and inside the vessel body is a stirring shaft. One end of the stirring shaft is connected to a motor, and the stirring shaft is equipped with a first stirring component, a second stirring component, and a third stirring component. Multiple ultrasonic generators are installed on both sides of the inner wall of the vessel body, and each ultrasonic generator is electrically connected to a controller. Carbon black material and adsorbent liquid enter the vessel body. After the motor starts, it drives the stirring shaft and the first, second, and third stirring components to thoroughly stir and mix the carbon black material and adsorbent liquid. The heat transfer medium in the jacket provides the temperature required for the reaction. Simultaneously, the controller activates multiple ultrasonic generators, achieving thorough dispersion of the material and facilitating adsorption and modification of the carbon black material by the adsorbent.
[0018] Because the first and third stirring components include a conical seat with multiple L-shaped stirring plates with a hollow structure, the conical seat and the multiple L-shaped stirring plates move circumferentially inside the main body as the stirring shaft rotates, stirring and mixing the carbon black material and dispersant distributed around it, greatly improving the mixing efficiency.
[0019] The second mixing component includes a trapezoidal mixing frame with multiple S-shaped stirring rods. The trapezoidal mixing frame and the multiple S-shaped stirring rods move circumferentially within the main body as the mixing shaft rotates, thoroughly mixing the surrounding carbon black material and dispersant, thus greatly improving mixing efficiency.
[0020] Both the first and second grinding devices include a main body. The top of the main body has a feed inlet and a dispersant inlet, and the bottom has a discharge outlet. The main body is surrounded by a jacket. Inside the main body, from top to bottom, are interconnected grinding chambers and a storage chamber. Inside the grinding chamber is a rotating shaft, one end of which is connected to a motor. A material dispersion component is mounted on the shaft, below which is a mixing component, and below that is a grinding component. When the motor starts, it drives the rotating shaft to rotate. The carbon black material with the adsorbent layer and the dispersant enter the main body through the feed inlet and dispersant inlet, respectively. Under gravity, they are first initially dispersed by the material dispersion component, then mixed by the mixing component, and finally ground by the grinding component. Simultaneously, the heat medium in the jacket provides the necessary temperature for grinding. This grinding device structure ensures thorough contact and mixing of the carbon black material and dispersant, improving the dispersibility of the modified carbon black product.
[0021] The material dispersion component includes a V-shaped plate with a perforated structure located at the upper end of the stirring shaft, and the upper surface of the V-shaped plate is equipped with multiple material dispersion rods of varying heights. The mixing component includes multiple zigzag mixing plates, each equipped with multiple mixing rods. After the motor starts, it drives the rotating shaft, V-shaped plate, and multiple material dispersion rods to rotate, thus initially dispersing the scattered carbon black material and dispersant, preventing the formation of agglomerates of carbon black and dispersant.
[0022] The mixing component includes zigzag mixing plates mounted on a rotating shaft, with multiple mixing rods on the mixing plates. These zigzag mixing plates and rods move circumferentially with the rotation of the shaft, stirring and mixing the surrounding carbon black material and dispersant, ensuring thorough contact and mixing, and significantly improving mixing efficiency.
[0023] The grinding components include a grinding body with multiple grinding blocks. The end of each grinding block furthest from the grinding body is fitted with a clearance fit against the inner wall of the grinding chamber. Under the action of the rotating shaft, the grinding body and the multiple grinding blocks grind the carbon black material and dispersant distributed around them, increasing the specific surface area of the carbon black material and dispersant, promoting full contact between the carbon black material and the dispersant, and thus obtaining a highly dispersible carbon black product.
[0024] Because the separation device is a centrifugal filter, the modified carbon black material and solvent can be effectively separated, facilitating subsequent drying.
[0025] Because the drying device is a fluidized bed dryer, the modified carbon black product is heated evenly, which greatly improves the drying efficiency and ensures the stability of the carbon black product. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the pretreatment system for producing carbon black dispersion according to this utility model;
[0027] Among them, 1-first reaction vessel, 2-first adsorbent liquid conveying pipeline, 3-first grinding device, 30-grinding chamber, 31-storage chamber, 32-left partition, 33-right partition, 34-material dispersion component, 340-V-shaped plate, 341-material dispersion rod, 35-mixing component, 350-mixing plate, 351-mixing rod, 36-grinding component, 360-grinding body, 361-grinding block, 4-first dispersant storage tank, 5-second reaction vessel, 50-first stirring component, 500-conical seat, 501-stirring plate, 51-second stirring component, 510-stirring frame, 511-stirring rod, 52-third stirring component, 53-ultrasonic generator, 54-controller, 6-second adsorbent liquid conveying pipeline, 7-second grinding device, 8-second dispersant storage tank, 9-separation device, 10-drying device, 11-modified carbon black product storage tank. Detailed Implementation
[0028] 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 merely illustrative of the present utility model and are not intended to limit the present utility model.
[0029] A pretreatment system for the production of carbon black dispersion, such as Figure 1As shown, the system includes a first reaction vessel 1, the inlet of which is connected to a first adsorbent liquid conveying pipe 2, the outlet of which is connected to a first grinding device 3, the inlet of which is connected to a first dispersant storage tank 4, the outlet of which is connected to a second reaction vessel 5, the inlet of which is connected to a second adsorbent liquid conveying pipe 6, the outlet of which is connected to a second grinding device 7, the inlet of which is connected to a second dispersant storage tank 8, the outlet of which is connected to a separation device 9 (centrifugal filter, purchased from the manufacturer), the outlet of which is connected to a drying device 10 (fluidized bed dryer, purchased from the manufacturer), and the outlet of which is connected to a modified carbon black product storage tank 11.
[0030] Carbon black material with a particle size of 15-20 μm is fed into the first reactor. Under the action of a pump, the first adsorbent solution (amino acids containing carboxyl or amino groups) is transported from the first adsorbent solution delivery pipe into the first reactor. After heating, stirring, and dispersion, a carbon black solution loaded with the first adsorbent adsorption layer is obtained. Then, under the action of another pump, the carbon black solution enters the first grinding device, and simultaneously, the dispersant in the first dispersant storage tank enters the first grinding device. After heating, stirring, dispersion, and grinding, the solution enters the second reactor. Simultaneously, under the action of a pump, the second adsorbent solution in the second adsorbent solution delivery pipe... The liquid (ethylenediamine solution or amino acids with carboxyl or amino groups) enters the second reactor. After heating and stirring to disperse, a carbon black solution loaded with a second adsorbent layer is obtained. The solution is then pumped to the second grinding device. At the same time, the second dispersant in the second dispersant storage tank enters the second grinding device. After heating, stirring, dispersing, and grinding, the resulting carbon black solution enters the separation device (which can effectively separate the modified carbon black material and the solvent). The collected solid material is transported to the drying device by an auger or conveyor belt for drying. Finally, it is transported to the modified carbon black product storage tank by a conveyor belt or screw conveyor for storage.
[0031] Both the first reactor 1 and the second reactor 5 include a reactor body. The top of the reactor body has a feed inlet and a liquid inlet, and the bottom has a discharge outlet. The reactor body is fitted with a jacket, and the interior of the reactor body contains a stirring shaft. One end of the stirring shaft is connected to a motor. The stirring shaft is equipped with a first stirring component 50, a second stirring component 51, and a third stirring component 52. Multiple ultrasonic generators 53 are located on both sides of the inner wall of the reactor body, and each ultrasonic generator 53 is electrically connected to a controller 54. Carbon black material and adsorbent liquid enter the reactor body. After the motor starts, it drives the stirring shaft and the first, second, and third stirring components to thoroughly stir and mix the carbon black material and adsorbent liquid. The heat transfer medium in the jacket provides the temperature required for the reaction. Simultaneously, the controller activates multiple ultrasonic generators, achieving thorough dispersion of the material and facilitating adsorption of the adsorbent onto the surface of the carbon black material for modification.
[0032] The first stirring component 50 and the third stirring component 52 include a conical seat 500 (welded to the stirring shaft), on which multiple L-shaped stirring plates 501 with hollow structures are provided. The conical seat and the multiple L-shaped stirring plates move circumferentially inside the body as the stirring shaft rotates, and stir and mix the carbon black material and dispersant distributed around it, greatly improving the mixing efficiency.
[0033] The second stirring component 51 includes a trapezoidal stirring frame 510 (welded to the stirring shaft), on which multiple S-shaped stirring rods 511 are provided. The trapezoidal stirring frame and the multiple S-shaped stirring rods move circumferentially inside the main body as the stirring shaft rotates, and fully stir and mix the carbon black material and dispersant distributed around it, greatly improving the mixing efficiency.
[0034] The first grinding device 3 and the second grinding device 7 both include a body. The top of the body is provided with a feed inlet and a dispersant inlet, and the bottom of the body is provided with a discharge outlet. The body is provided with a jacket. The interior of the body is provided with a grinding chamber 30 and a storage chamber 31 that are connected from top to bottom (a left partition 32 and a right partition 33 are provided between the grinding chamber and the storage chamber, and sliders are provided on both sides of the left partition 32 and the right partition 33 respectively. The inner wall of the body is provided with a sliding groove that matches the slider. The ends of the left and right partitions are provided with handles to facilitate pulling out the left and right partitions). The grinding chamber 30 is provided with a rotating shaft. One end of the rotating shaft is connected to a motor. A material dispersing component 34 is provided on the rotating shaft. A mixing component 35 is provided below the material dispersing component 34. A grinding component 36 is provided below the mixing component 35. When the motor starts, the carbon black material and dispersant loaded with adsorbent adsorption layer enter the body from the feed inlet and dispersant inlet, respectively. Under the action of gravity, they first undergo preliminary dispersion by the material dispersion component, then are stirred and mixed by the mixing component, and then ground by the grinding component. At the same time, the heat medium in the jacket provides the temperature required for grinding. The above-mentioned structure of the grinding device enables the carbon black material and dispersant to fully contact and mix, thereby improving the dispersibility of the modified carbon black product.
[0035] The material dispersion component 34 includes a V-shaped plate 340 with a hollow structure (welded to the rotating shaft) located at the upper end of the rotating shaft. The upper surface of the V-shaped plate 340 is provided with multiple material dispersion rods 341 of varying heights. The mixing component includes multiple zigzag mixing plates, each with multiple mixing rods. After the motor starts, it drives the rotating shaft, V-shaped plate, and multiple material dispersion rods to rotate, thus initially dispersing the scattered carbon black material and dispersant, preventing the formation of carbon black material and dispersant clumps.
[0036] The mixing component 35 includes a zigzag mixing plate 350 (welded to the rotating shaft) mounted on a rotating shaft, and multiple mixing rods 351 mounted on the mixing plate 350. The multiple zigzag mixing plates and multiple mixing rods move circumferentially with the rotation of the rotating shaft, stirring and mixing the surrounding carbon black material and dispersant, promoting full contact and mixing between the two, and greatly improving the mixing efficiency.
[0037] The grinding component 36 includes a grinding body 360 (welded to a rotating shaft), on which multiple grinding blocks 361 are mounted. The ends of the grinding blocks 361 furthest from the grinding body 360 are fitted with the inner wall of the grinding chamber with clearance. Under the action of the rotating shaft, the grinding body and the multiple grinding blocks grind the carbon black material and dispersant distributed around it, increasing the specific surface area of the carbon black material and dispersant, promoting full contact between the carbon black material and the dispersant, and thus obtaining a highly dispersible carbon black product.
[0038] The above description is only a preferred embodiment of the present utility model and is 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 pretreatment system for producing carbon black dispersion, characterized in that, The system includes a first reaction vessel, the inlet of which is connected to a first adsorbent liquid conveying pipeline, the outlet of which is connected to a first grinding device, the inlet of which is connected to a first dispersant storage tank, the outlet of which is connected to a second reaction vessel, the inlet of which is connected to a second adsorbent liquid conveying pipeline, the outlet of which is connected to a second grinding device, the inlet of which is connected to a second dispersant storage tank, the outlet of which is connected to a separation device, the outlet of which is connected to a drying device, and the outlet of which is connected to a modified carbon black product storage tank.
2. The pretreatment system for carbon black dispersion production according to claim 1, characterized in that, Both the first and second reaction vessels include a vessel body. The top of the vessel body is provided with a feed inlet and a liquid inlet, and the bottom of the vessel body is provided with a discharge outlet. The vessel body is provided with a jacket on the outside and a stirring shaft is provided inside the vessel body. One end of the stirring shaft is connected to a motor. The stirring shaft is provided with a first stirring component, a second stirring component, and a third stirring component. Multiple ultrasonic generators are provided on both sides of the inner wall of the vessel body. The multiple ultrasonic generators are electrically connected to a controller.
3. The pretreatment system for producing carbon black dispersion according to claim 2, characterized in that, The first stirring component and the third stirring component include a conical seat, on which multiple L-shaped stirring plates with hollow structures are provided.
4. The pretreatment system for producing carbon black dispersion according to claim 2, characterized in that, The second stirring component includes a trapezoidal stirring frame, on which a plurality of S-shaped stirring rods are provided.
5. The pretreatment system for producing carbon black dispersion according to claim 1, characterized in that, Both the first grinding device and the second grinding device include a body. The top of the body is provided with a feed inlet and a dispersant inlet, and the bottom of the body is provided with a discharge outlet. The body is provided with a jacket on the outside. The interior of the body is provided with a grinding chamber and a storage chamber that are interconnected from top to bottom. The grinding chamber is provided with a rotating shaft. One end of the rotating shaft is connected to a motor. The rotating shaft is provided with a material dispersing component. Below the material dispersing component is a mixing component. Below the mixing component is a grinding component.
6. The pretreatment system for producing carbon black dispersion according to claim 5, characterized in that, The material dispersing component includes a V-shaped plate disposed at the upper end of the rotating shaft, and the upper surface of the V-shaped plate is provided with a plurality of material dispersing rods of different heights.
7. The pretreatment system for producing carbon black dispersion according to claim 5, characterized in that, The mixing component includes a zigzag mixing plate mounted on a rotating shaft, and the mixing plate is provided with multiple mixing rods.
8. The pretreatment system for producing carbon black dispersion according to claim 5, characterized in that, The grinding component includes a grinding body, on which a plurality of grinding blocks are provided. The end of each grinding block away from the grinding body is in clearance fit with the inner wall of the grinding chamber.
9. The pretreatment system for producing carbon black dispersion according to claim 1, characterized in that, The separation device is a centrifugal filter.
10. A pretreatment system for producing carbon black dispersion according to claim 1, characterized in that, The drying device is a fluidized bed dryer.