Carbon black densification and granulation device

Abstract

The invention relates to the technical field of carbon black processing, in particular to a carbon black densification and granulation device which comprises a bin body, a densification mechanism and a crushing mechanism. The bin body is sequentially provided with a compaction bin section, a granulation bin section and a storage bin section from top to bottom; the densification mechanism is arranged in the compaction bin section and is used for compacting the powdery carbon black into long sheet-shaped carbon black; the crushing mechanism is arranged at the granulation bin section and is used for crushing the long sheet-shaped carbon black into granular carbon black; and the granular carbon black can fall into the storage bin section. The device integrally achieves the purpose of dry granulation, compared with wet granulation, carbon black does not need to be wetted and dried, the production process is simplified, the production period is shortened, and the production efficiency is improved. And meanwhile, the purchase and maintenance cost of corresponding equipment of a production line is reduced. In the granulation process, granulation water and an adhesive are not needed, so that the influence of the additives on the quality of the carbon black is avoided. The carbon black does not need to be dried, so that the consumption of electric energy is reduced, and the production process is green and environment-friendly.

Description

Technical Field

[0001] The invention relates to the technical field of carbon black processing, in particular to a carbon black densification and granulation device. Background Art

[0002] The carbon black generated in the reactor is in powder form with low apparent density, which is not conducive to storage and transportation. Moreover, powdered carbon black is prone to scattering and dust, causing environmental pollution. Therefore, carbon black needs to be granulated. At present, carbon black plants generally use wet granulation technology to process powdered carbon black into granular carbon black. The process generally involves first mixing powdered carbon black, granulation water and adhesive to form a paste material, and then using a granulator to form granular carbon black. Finally, use a dryer to dry the granular carbon black to obtain the final carbon black product. Although the wet granulation process can improve the apparent density and fluidity of carbon black, the wet granulation process includes multiple steps such as wetting, granulation and drying, and the production cycle is long, resulting in low production efficiency. Summary of the invention

[0003] The invention provides a carbon black densification granulation device, which is used to solve the problem of low production efficiency when using a wet granulation process to produce granular carbon black.

[0004] The present invention provides a carbon black densification granulation device, comprising:

[0005] The silo body is provided with a compaction silo section, a granulation silo section and a storage silo section from top to bottom;

[0006] A densification mechanism is provided in the compaction chamber section and is used to compact the powdered carbon black into long flake carbon black;

[0007] The crushing mechanism is arranged in the granulation bin section and is used for crushing the long flake carbon black into granular carbon black; the granular carbon black can fall into the storage bin section.

[0008] In some of these embodiments, the densification mechanism includes:

[0009] There are two pressing rollers; the axes of the two pressing rollers are parallel to each other and are respectively arranged in the compacting bin section so as to be rotatable around the axes; a compacting channel is formed between the two pressing rollers; and the axis distance between the two pressing rollers is adjustable.

[0010] In some embodiments, the crushing mechanism comprises:

[0011] A rotating shaft is rotatably arranged in the granulation bin section around an axis;

[0012] The cutting blades are multiple and are evenly fixed on the outer wall of the rotating shaft around the axis of the rotating shaft.

[0013] In some embodiments, it also includes:

[0014] A vertical feeding cylinder is installed on the top of the compacting bin section and is connected to the compacting bin section;

[0015] A vertical conveying screw is rotatably arranged around an axis and penetrates the vertical feeding cylinder, and is used to convey powdered carbon black to the densification mechanism;

[0016] The vacuum pump is respectively connected with the upper section of the vertical material conveying cylinder, the lower section of the vertical material conveying cylinder and the compaction bin section, and can perform degassing treatment on the vertical material conveying cylinder and the compaction bin section.

[0017] In some embodiments, it also includes:

[0018] The upper filter is installed at the connection point between the vacuum pump and the upper section of the vertical feeding cylinder;

[0019] The middle filter is installed at the connection point between the vacuum pump and the lower section of the vertical feeding cylinder;

[0020] The lower filter is installed at the connection point between the vacuum pump and the compaction chamber section.

[0021] In some embodiments, it also includes:

[0022] Powder can;

[0023] A first horizontal feeding cylinder, one end of which is connected to the bottom end of the powder tank, and the other end of which is connected to the vertical feeding cylinder;

[0024] The first transverse conveying screw is rotatably arranged around an axis and penetrates the first transverse conveying cylinder, and is used for conveying powdered carbon black into the vertical conveying cylinder.

[0025] In some embodiments, it also includes:

[0026] A second transverse material conveying cylinder, the top of which is connected to the bottom of the material storage bin section;

[0027] A second transverse conveying screw is rotatably arranged around an axis and penetrates the second transverse conveying cylinder;

[0028] The screen is arranged at the bottom of the storage bin section.

[0029] In some embodiments, it also includes:

[0030] A material return pipe, capable of being communicated with the second transverse material delivery cylinder;

[0031] A blower connected to one end of the return pipe;

[0032] The filter bag is installed at the other end of the return pipe.

[0033] The beneficial effects of the present invention are as follows: The carbon black densification granulation device of the present invention is provided with a bin body, and the bin body is provided with a compaction bin section, a granulation bin section and a storage bin section from top to bottom. The densification mechanism is arranged in the compaction bin section, which can reduce the gap between the powdered carbon black and compact the powdered carbon black into long flake carbon black. The crushing mechanism is arranged in the granulation bin section, which is used to crush the long flake carbon black into granular carbon black. After that, the granular carbon black falls into the storage bin section for temporary storage. The carbon black densification granulation device achieves the purpose of dry granulation. Compared with wet granulation, carbon black does not need to be wetted and dried, which simplifies the production process, shortens the production cycle, and improves production efficiency. At the same time, it also reduces the purchase and maintenance costs of the corresponding equipment of the production line. During the granulation process, there is no need to use granulation water and adhesives, which avoids the influence of these additives on the quality of the finished carbon black. There is no need to dry the carbon black, which reduces the consumption of electricity, and no wastewater and waste gas are generated. The production process is green and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a structural schematic diagram of some specific embodiments of a carbon black densification and granulation device of the present invention;

[0035] Figure 2 It is a structural schematic diagram of some other specific embodiments of a carbon black densification and granulation device of the present invention;

[0036] Figure 3 yes Figure 1 The schematic diagrams of the structures of some specific embodiments of the crushing mechanism in the carbon black densification granulation device are shown.

[0037] In the attached drawings, 110, bin body; 111, compacting bin section; 112, granulation bin section; 113, storage bin section; 1131, granular carbon black discharge port; 1132, first gate; 120, densification mechanism; 121, pressure roller; 130, crushing mechanism; 131, rotating shaft; 132, cutting blade; 141, vertical feeding cylinder; 142, vertical feeding screw; 143, first driving motor; 144, upper filter screen; 145. Middle filter screen; 146. Lower filter screen; 150. Vacuum pump; 161. First transverse feed cylinder; 162. First transverse feed screw; 163. Second drive motor; 170. Powder tank; 181. Second transverse feed cylinder; 182. Second transverse feed screw; 183. Third drive motor; 184. Screen screen; 191. Return pipe; 192. Blower; 193. Second gate plate; 194. Filter bag device. DETAILED DESCRIPTION

[0038] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] As described in the background technology, usually, powdered carbon black is processed into granular carbon black using a wet granulation process. First, powdered carbon black, granulation water and a binder are mixed to form a paste-like material. Then, it is extruded and formed through a granulator to form granular carbon black. After that, the granular carbon black is dried using a dryer to obtain the final carbon black product. Although the wet granulation process can improve the apparent density and fluidity of carbon black, the wet granulation process includes multiple steps such as wetting, granulation and drying, and the production cycle is long, resulting in low production efficiency.

[0040] To solve the above problems, refer to Figure 1 , Figure 2 and Figure 3 The present invention provides a carbon black densification granulation device, including a bin body 110, a densification mechanism 120 and a crushing mechanism 130. The bin body 110 is provided with a compaction bin section 111, a granulation bin section 112 and a storage bin section 113 from top to bottom. The densification mechanism 120 is arranged in the compaction bin section 111, which can reduce the gap between the powdered carbon black and compact the powdered carbon black into long flake carbon black. It should be noted that the carbon black itself has a certain humidity. The crushing mechanism 130 is arranged in the granulation bin section 112, and is used to crush the long flake carbon black into granular carbon black. Afterwards, the granular carbon black falls into the storage bin section 113 for temporary storage. The carbon black densification granulation device achieves the purpose of dry granulation. Compared with wet granulation, there is no need to wet and dry the carbon black, which simplifies the production process, shortens the production cycle, improves the production efficiency, and at the same time reduces the purchase and maintenance costs of the corresponding production equipment. During the granulation process, no granulation water and adhesive are needed, which avoids the impact of these additives on the quality of the finished carbon black. There is no need to dry the carbon black, which reduces the consumption of electricity, and no wastewater and waste gas are generated, making the production process green and environmentally friendly.

[0041] Preferably, a granular carbon black discharge port 1131 is provided at the lower part of one side of the storage bin section 113. The granular carbon black discharge port 1131 is detachably mounted with a first gate 1132. When the first gate 1132 is opened, the granular carbon black in the storage bin section 113 can flow out.

[0042] Specifically, in the demonstration example, the densification mechanism 120 includes two fourth drive motors and two pressure rollers 121. The axes of the two pressure rollers 121 are parallel to each other and are respectively arranged in the compaction bin section 111 so as to be rotatable around their own axes. A compaction channel is formed between the two pressure rollers 121. The two fourth drive motors are respectively installed on the rear side of the compaction bin section 111. The output shafts of the two fourth drive motors are fixedly connected to one end of the two pressure rollers 121 in a one-to-one correspondence. The pressure rollers 121 are driven to rotate by the fourth drive motor. Compared with the manual drive method, it saves time and effort and improves the degree of automation.

[0043] Preferably, the densification mechanism 120 also includes two linear drives and two movable seats. One of the linear drives is fixedly mounted on the front side wall of the compaction bin section 111, with the output shaft facing the left side. The other linear drive is fixedly mounted on the rear side wall of the compaction bin section 111, with the output shaft facing the left side. One of the movable seats can be slidably mounted on the front side wall of the compaction bin section 111, and the other movable seat can be slidably mounted on the rear side wall of the compaction bin section 111. The front end of the pressure roller 121 located on the right side is rotatably connected to the movable seat located at the front end through a bearing, and the rear end is rotatably connected to the movable seat located at the rear end through a bearing. The two movable seats are driven by the two linear drives to move left and right, thereby driving the pressure roller 121 on the right side to move left and right, thereby making the axial distance between the two pressure rollers 121 adjustable. In this way, the compaction degree of the powdered carbon black can be adjusted.

[0044] Preferably, each linear actuator can be a servo electric cylinder, which has higher control accuracy and ensures that the pressure on both sides is basically consistent. Each linear actuator can also be an electric push rod, which can achieve very precise positioning and motion control by adjusting the pitch to control the thrust and speed. It does not require the use of liquid or gas and other working fluids during operation, so there will be no problem of hydraulic oil or gas leakage polluting the working environment, and the environmental protection performance is better. At the same time, it is easy to install and has low maintenance costs. Of course, each linear actuator can also be a hydraulic cylinder or a pneumatic cylinder, with relatively stable power output, faster movement, strong reliability, simple structure and low maintenance costs.

[0045] In some embodiments, such as Figure 1 and Figure 3As shown, the crushing mechanism 130 includes a fifth drive motor, a rotating shaft 131 and a plurality of cutting blades 132. The fifth drive motor is mounted on the rear side wall of the granulation bin section 112. The rotating shaft 131 is rotatably arranged in the granulation bin section 112 around its own axis, and the rear end is fixedly connected to the output shaft of the fifth drive motor. A plurality of cutting blades 132 are evenly fixed on the outer wall of the rotating shaft 131 around the axis of the rotating shaft 131. The rotating shaft 131 and the plurality of cutting blades 132 are driven to rotate by the fifth drive motor to crush the long flake carbon black into granular carbon black. It should be noted that a plurality of cutting teeth are arranged on the edge of one side of each blade away from the rotating shaft 131.

[0046] In other embodiments, the crushing mechanism 130 includes two fifth drive motors and two granulation rollers. The axes of the two granulation rollers are parallel to each other and are rotatably arranged in the granulation bin section 112, respectively, and a granulation channel is formed between the side walls. The two fifth drive motors are respectively installed on the rear side wall of the granulation bin section 112. The output shafts of the two fifth drive motors are fixedly connected to one end of the two granulation rollers in a one-to-one correspondence. The granulation rollers are driven to rotate by the fifth drive motor. Since a plurality of granulation grooves uniformly distributed along the axial and circumferential directions of the granulation rollers are arranged on the side wall of each granulation roller. When the long flake carbon black passes through the granulation channel, the long flake carbon black can be crushed into granular carbon black by means of the granulation grooves on the rotating granulation roller. The groove depth of each formed groove is 0.25mm, 0.50mm or 1.00mm, so that the particle size of the finished carbon black is 0.50mm, 1.00m or 2.00mm, so as to meet the particle size requirements of the finished carbon black.

[0047] Specifically, in the example, Figure 1As shown, the carbon black densification granulation device also includes a vertical feed barrel 141, a vertical conveying screw 142, a first drive motor 143, a vacuum pump 150, an upper filter screen 144, a middle filter screen 145, a lower filter screen 146, a powder tank 170, a first transverse feed barrel 161, a first transverse conveying screw 162 and a second drive motor 163. The vertical feed barrel 141 is installed at the top of the compaction bin section 111 and is connected to the compaction bin section 111. The vertical conveying screw 142 is rotatably arranged around its own axis and is inserted into the vertical feed barrel 141, and is used to convey powdered carbon black to the densification mechanism 120. The first drive motor 143 is installed at the top of the vertical feed barrel 141, and the output shaft is arranged downward. The output shaft of the first drive motor 143 is fixedly connected to the top of the vertical conveying screw 142, and can drive the vertical conveying screw 142 to rotate. The vacuum pump 150 is connected to the upper section of the vertical feeding cylinder 141, the lower section of the vertical feeding cylinder 141, and the compaction bin section 111, respectively, and can degas the vertical feeding cylinder 141 and the compaction bin section 111 to reduce the gaps between the powdered carbon black in the vertical feeding cylinder 141. With the help of the vacuum pump 150, the gaps between the powdered carbon black can be reduced in advance before compacting the powdered carbon black, which is beneficial to compacting the carbon black. The upper filter 144 is installed at the connection between the vacuum pump 150 and the upper section of the vertical feeding cylinder 141. The middle filter 145 is installed at the connection between the vacuum pump 150 and the lower section of the vertical feeding cylinder 141. The lower filter 146 is installed at the connection between the vacuum pump 150 and the compaction bin section 111. Prevent carbon black from flowing into the vacuum pipeline and avoid clogging of the vacuum pipeline. One end of the first transverse feeding cylinder 161 is connected to the bottom end of the powder tank 170, and the other end is connected to the middle of the vertical feeding cylinder 141. The first transverse conveying screw 162 is rotatably arranged in the first transverse feeding cylinder 161 around the axis, and is used to convey powdered carbon black into the vertical feeding cylinder 141. The second driving motor 163 is installed at the other end of the first transverse feeding cylinder 161, and the output shaft is fixedly connected to one end of the first transverse conveying screw 162, which can drive the first transverse conveying screw 162 to rotate. Among them, the powder tank 170 is used to store powdered carbon black and to supply powdered carbon black to the first transverse feeding cylinder 161.

[0048] Specifically, in the exemplary embodiment, the carbon black densification granulation device further includes a second transverse feed barrel 181, a second transverse conveying screw 182, a third drive motor 183 and a screen 184. The top of the second transverse feed barrel 181 is connected to the bottom end of the storage bin section 113. The second transverse conveying screw 182 is rotatably arranged in the second transverse feed barrel 181 around its own axis, and can convey the carbon black in the second transverse feed barrel 181 to the outside of the second transverse feed barrel 181. The third drive motor 183 is installed at one end of the second transverse feed barrel 181, and the output shaft is fixedly connected to one end of the second transverse conveying screw 182, and can drive the second transverse conveying screw 182 to rotate. The screen 184 is fixedly installed at the bottom of the storage bin section 113. It should be noted that the aperture on the screen 184 should be less than 0.50 mm, so that the carbon black with a particle size less than 0.50 mm can leak through the screen 184 into the second transverse feed barrel 181.

[0049] Specifically, in the example, Figure 2 As shown, the carbon black densification granulation device also includes a return pipe 191, a second gate 193, a blower 192 and a filter bag 194. The return pipe 191 can be connected to the second transverse feed cylinder 181. The second gate 193 is detachably installed at the connection between the return pipe 191 and the second transverse feed cylinder 181. The blower 192 is connected to one end of the return pipe 191 and is used to blow air into the return pipe 191. The filter bag 194 is installed at the other end of the return pipe 191. First, open the second gate 193 to connect the second transverse feed cylinder 181 with the return pipe 191. Then, the rotating second transverse conveying screw 182 drives the carbon black with a particle size less than 0.50 mm in the second transverse feed cylinder 181 to flow into the return pipe 191. Afterwards, the second gate 193 is closed, and the blower 192 blows air into the return pipe 191, and the carbon black with a particle size less than 0.50 mm is pushed into the filter bag 194 by wind force. Finally, the carbon black in the filter bag 194 can be transferred to the powder tank 170 for reuse, thus greatly reducing the waste of raw materials.

[0050] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0054] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A carbon black densification granulation device, characterized in that: include: The silo body is provided with a compaction silo section, a granulation silo section and a storage silo section from top to bottom; A densification mechanism, disposed in the compaction chamber section, for compacting the powdered carbon black into long flake carbon black; The crushing mechanism is arranged in the granulation bin section and is used for crushing the long flake carbon black into granular carbon black; the granular carbon black can fall into the storage bin section.

2. The carbon black densification granulation device according to claim 1, characterized in that: The densification mechanism comprises: There are two pressing rollers; the axes of the two pressing rollers are parallel to each other and are respectively rotatably arranged in the compacting bin section around the axes; a compacting channel is formed between the two pressing rollers; and the axial distance between the two pressing rollers is adjustable.

3. The carbon black densification granulation device according to claim 1, characterized in that: The crushing mechanism comprises: A rotating shaft is rotatably arranged in the granulation bin section around an axis; The cutting blades are multiple and are evenly fixed on the outer wall of the rotating shaft around the axis of the rotating shaft.

4. The carbon black densification granulation device according to claim 3, characterized in that: Also includes: A vertical feeding cylinder is installed on the top of the compacting bin section and is connected to the compacting bin section; A vertical conveying screw, rotatably arranged around an axis and passing through the vertical feeding cylinder, for conveying the powdered carbon black to the densification mechanism; The vacuum pump is respectively connected to the upper section of the vertical material conveying cylinder, the lower section of the vertical material conveying cylinder, and the compaction bin section, and can perform degassing treatment on the vertical material conveying cylinder and the compaction bin section.

5. The carbon black densification granulation device according to claim 6, characterized in that: Also includes: An upper filter screen is installed at the connection point between the vacuum pump and the upper section of the vertical feeding cylinder; A middle filter screen is installed at the connection point between the vacuum pump and the lower section of the vertical feeding cylinder; The lower filter screen is installed at the connection point between the vacuum pump and the compaction bin section.

6. The carbon black densification granulation device according to claim 1, characterized in that: Also includes: Powder can; A first transverse feeding cylinder, one end of which is connected to the bottom end of the powder tank, and the other end of which is connected to the vertical feeding cylinder; The first transverse conveying screw is rotatably arranged around an axis and penetrates the first transverse conveying cylinder, and is used for conveying the powdered carbon black into the vertical conveying cylinder.

7. The carbon black densification granulation device according to claim 1, characterized in that: Also includes: A second transverse material conveying cylinder, the top of which is connected to the bottom end of the material storage bin section; A second transverse conveying screw is rotatably arranged around an axis and is inserted into the second transverse conveying cylinder; The screen is arranged at the bottom of the storage bin section.

8. The carbon black densification granulation device according to claim 7, characterized in that: Also includes: A return pipe, capable of communicating with the second transverse feed cylinder; A blower connected to one end of the return pipe; The filter bag is installed at the other end of the return pipe.

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