Thermal cracking carbon black conveying apparatus
By installing exhaust pipes and dust collectors in the pyrolysis carbon black conveying equipment, the problems of low conveying efficiency and dust pollution are solved, achieving efficient and clean carbon black conveying, which is suitable for the stable conveying of a variety of materials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO EXCEL INTELLIGENT EQUIP CO LTD
- Filing Date
- 2025-04-29
- Publication Date
- 2026-06-12
AI Technical Summary
The conveying process of pyrolytic carbon black suffers from problems such as low conveying efficiency, easy blockage, and dust pollution.
A pyrolysis carbon black conveying device was designed. By setting an exhaust pipe connecting the buffer silo and the sending tank, and installing a dust collector on the top of the buffer silo to prevent gas backflow and accumulation, a positive pressure conveying technology is adopted, combined with components such as a vibrating screen and a screw conveyor to achieve efficient conveying.
It improves carbon black conveying efficiency, avoids dust pollution, ensures stable material conveying and environmental cleanliness, and is suitable for long-distance, large-volume material conveying.
Smart Images
Figure CN224349919U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of waste rubber and plastic pyrolysis technology, and in particular relates to a pyrolysis carbon black conveying device. Background Technology
[0002] Waste tire pyrolysis is an irreversible thermochemical reaction that uses high temperatures in an oxygen-free or oxygen-deficient atmosphere to decompose the total organic matter in waste tires, releasing volatile products and forming solid coke. During incomplete thermal degradation, gaseous, liquid, and solid products can be formed. This method can completely decompose waste tires into useful products such as pyrolysis oil, pyrolysis carbon black, and pyrolysis non-condensable gases. Among these, carbon black accounts for 30%-35% of the products, making it the second largest product of tire pyrolysis.
[0003] The average particle size of pyrolytic carbon black is 40-50 nm, and its aggregates are similar to those of GPF carbon black. Due to its ash content of 14±2% and its composition primarily of silica, cobalt salts, and zinc compounds, it exhibits unique chemical and physical properties, with high crosslinking and diffusivity. Consequently, the conveying process of pyrolytic carbon black suffers from problems such as low conveying efficiency, easy clogging, and dust pollution. Utility Model Content
[0004] Details of one or more embodiments of the present invention are set forth in the following drawings and description to make other features, objects and advantages of the present application more readily apparent.
[0005] This invention proposes a pyrolysis carbon black conveying device, which solves the technical problem of low conveying efficiency in the pyrolysis carbon black conveying process and has the characteristics of high conveying efficiency.
[0006] This utility model discloses a pyrolysis carbon black conveying device for conveying pyrolysis carbon black under positive pressure, comprising: a buffer silo having a feed inlet and an air inlet at the top, and a discharge outlet at the bottom; a delivery tank having a feed inlet and an air outlet at the top, and a discharge outlet at the bottom, the feed inlet being connected to the discharge outlet of the buffer silo; an exhaust pipe connecting the air inlet of the buffer silo to the air outlet of the delivery tank; and a dust collector located at the top of the buffer silo and connected to the buffer silo.
[0007] In some embodiments, the top circumference of the buffer silo is evenly provided with a number of air inlets, and the top circumference of the delivery tank is evenly provided with air outlets corresponding to the number of air inlets of the buffer silo. The air outlet of each delivery tank is connected to the air inlet of the buffer silo through an exhaust pipe.
[0008] In some embodiments, an exhaust valve is provided on the exhaust pipe.
[0009] In some embodiments, the pyrolysis carbon black conveying equipment also includes a vibrating screen connected to the feed inlet of the buffer silo.
[0010] In some embodiments, the vibrating screen includes a screen body, a base, a vibrating motor connected to the screen body, a spring connected between the screen body and the base, and a screen mesh disposed in the screen body. The screen body has a feed inlet and a discharge outlet, with the feed inlet located above one end of the screen mesh and the discharge outlet located below the other end of the screen mesh.
[0011] In some embodiments, the vibrating screen is inclined downwards from the feed inlet end to the discharge outlet end.
[0012] In some embodiments, the pyrolysis carbon black conveying equipment also includes a cooling water slag discharge screw conveyor connected to the feed inlet of the vibrating screen.
[0013] In some embodiments, the pyrolysis carbon black conveying equipment also includes a collection bin connected to the discharge port of the sending tank. The collection bin is connected to the sending tank via a conveying pipe, which is connected to a Roots blower.
[0014] In some embodiments, the top of the collection silo is equipped with a pressure relief dust collector, and the bottom is connected to a conveying screw conveyor.
[0015] In some embodiments, the pyrolysis carbon black conveying equipment also includes a bucket elevator connected to a conveying screw conveyor, and a wire separator connected to the bucket elevator.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0017] This utility model provides a pyrolysis carbon black conveying device. Addressing the problem that due to the light specific gravity and high bulk density of coarse carbon black, gas tends to rise during positive pressure conveying, and the backlash force hinders the downward movement of material, thus affecting conveying efficiency, the device connects the buffer silo and the delivery tank via an exhaust pipe, effectively preventing gas backflow and accumulation, ensuring the conveying efficiency of the pyrolysis carbon black. Furthermore, by installing a dust collector at the top of the buffer silo, the device further avoids pollution problems caused by dust leakage. Attached Figure Description
[0018] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:
[0019] Figure 1 This is a schematic diagram of the structure of the pyrolysis carbon black conveying equipment provided in an embodiment of the present utility model;
[0020] In the above figures: 1. Buffer silo; 2. Sending tank; 3. Exhaust pipe; 4. Dust collector; 5. Exhaust valve; 601. Screen body; 602. Base; 603. Vibrating motor; 604. Spring; 7. Cooling water slag discharge screw conveyor; 8. Collection silo; 9. Conveying pipe; 10. Roots blower; 11. Pressure relief dust collector; 12. Conveying screw conveyor; 13. Bucket elevator; 14. Wire separator. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described and explained below in conjunction with 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. All other embodiments obtained by those skilled in the art based on the embodiments provided by this utility model without inventive effort are within the scope of protection of this utility model.
[0022] This utility model provides a pyrolysis carbon black conveying device. Figure 1 This is a schematic diagram of the structure of a pyrolysis carbon black conveying device according to an embodiment of the present invention.
[0023] This pyrolysis carbon black conveying equipment conveys pyrolysis carbon black under positive pressure. However, due to the light specific gravity and high bulk density of crude carbon black, gas tends to rise during positive pressure conveying. The back pressure force hinders the material from moving downward, thus affecting the conveying efficiency.
[0024] To address the above problems, this utility model provides a pyrolysis carbon black conveying device, such as... Figure 1 As shown, the system includes: a buffer silo 1 with a feed inlet and an air inlet at the top, and a discharge outlet at the bottom; a delivery tank 2 with a feed inlet and an air outlet at the top, and a discharge outlet at the bottom, the feed inlet being connected to the discharge outlet of the buffer silo 1; an exhaust pipe 3 connecting the air inlet of the buffer silo 1 and the air outlet of the delivery tank 2; and a dust collector 4 located at the top of the buffer silo 1 and connected to it. The exhaust pipe 3 connects the buffer silo 1 and the delivery tank 2, effectively preventing gas backflow and accumulation, ensuring the efficiency of pyrolysis carbon black conveying. Furthermore, the dust collector 4 installed at the top of the buffer silo 1 further avoids pollution problems caused by dust leakage.
[0025] To more effectively prevent gas backflow and accumulation, the top circumference of the buffer silo 1 is evenly provided with several air inlets, and the top circumference of the sending tank 2 is evenly provided with air outlets corresponding to the number of air inlets of the buffer silo 1. The air outlet of each sending tank 2 is connected to the air inlet of the buffer silo 1 through an exhaust pipe 3.
[0026] In order to accurately control the flow rate of the returning gas, an exhaust valve 5 is installed on the exhaust pipe 3.
[0027] A pyrolysis carbon black conveying device includes a dust collector 4 installed on the top of a crude carbon black buffer silo 1. A pulse valve is located on the upper left side of the dust collector 4, a fan is located on the upper right side, and a discharge valve is located at the lower part of the conical body. An upper material level gauge is installed on the upper left side of the crude carbon black buffer silo 1, interlocked with a cooling water slag discharge screw conveyor 7 to control the upper material level within the silo. A lower material level gauge is installed at the lower right conical body of the crude carbon black buffer silo 1, interlocked with a rotary feeder to control the lower material level within the silo.
[0028] The top left side of the crude carbon black buffer silo 1 has an air inlet #1, and the right side of the silo has an air inlet #2. The two sets of symmetrical air inlets are designed to prevent backflow of gas. Air inlets #1 and #2 are connected by exhaust pipes #1 and #2, respectively. Exhaust valves #1 and #2 are installed on exhaust pipes #1 and #2, respectively, to control the flow rate of the backflowing gas.
[0029] The discharge port of the carbon black buffer silo 1 is located at the bottom of the silo body and is connected to the inlet of the sending tank 2. The sending tank 2 has a No. 1 vent on the upper left side and a No. 2 vent on the upper right side, which are connected to exhaust pipes No. 1 and No. 2 respectively to discharge the returned gas. A pressure gauge is installed at the top center of the sending tank 2 to display the pressure changes within the tank.
[0030] In some embodiments, the pyrolysis carbon black conveying equipment further includes a vibrating screen connected to the feed inlet of the buffer silo 1. The vibrating screen includes a screen body 601, a base 602, a vibrating motor 603 connected to the screen body 601, a spring 604 connecting the screen body 601 and the base 602, and a screen mesh disposed within the screen body 601. The screen body 601 has a feed inlet and a discharge outlet, with the feed inlet located above one end of the screen mesh and the discharge outlet located below the other end of the screen mesh. To ensure smooth discharge, the vibrating screen is inclined downwards from the feed inlet end towards the discharge outlet end.
[0031] The vibrating screen primarily uses vibration to separate coarse carbon black into particles of varying sizes. After the coarse carbon black enters the vibrating screen, the screen mesh begins to vibrate. The material, subjected to this vibration, begins to be sieved on the screen mesh. Based on the different aperture sizes of the screen mesh, the particles in the coarse carbon black are graded by the vibrating screen. The vibrating screen is installed at a 14° rightward tilt angle, and four symmetrical damping springs 604 are installed under the screen frame to provide shock absorption, support, and cushioning. The working principle of the vibrating screen is that a vibrating motor drives the screen body 601 to vibrate, causing the material on the screen mesh to move towards the end of the screen mesh under the influence of inertial force. Particles of different sizes are separated into those above and below the screen mesh due to differences in centrifugal force. The particles above the screen mesh are separated from the larger particle outlet and stored in packaging bags. The powder separated below the screen mesh enters the coarse carbon black buffer silo 1 through the undersize powder outlet via a chute.
[0032] In some embodiments, the pyrolysis carbon black conveying equipment further includes a cooling water discharge screw conveyor 7 connected to the feed inlet of the vibrating screen. After pyrolysis, the crude carbon black is discharged from the bottom of the rear sealed chamber and then conveyed by the cooling water discharge screw conveyor 7 to the crude carbon black buffer silo 1 for storage. The drive unit of the cooling water discharge screw conveyor 7 is located at the left end of the cylinder, and the feed inlet is vertically located on the upper left side of the screw cylinder, connecting to the discharge port of the rear sealed chamber. The discharge port of the cooling water discharge screw conveyor 7 is located at the lower right side of the screw cylinder and connected to the feed inlet of the vibrating screen.
[0033] In some embodiments, the pyrolysis carbon black conveying equipment also includes a collection bin 8 connected to the discharge port of the sending tank 2. The collection bin 8 is connected to the sending tank 2 via a conveying pipe 9, and the conveying pipe 9 is connected to a Roots blower 10.
[0034] The discharge port of sending tank 2 is connected to a manual knife gate valve. A rotary feeder is installed at the bottom of the manual knife gate valve. The rotary feeder, through the rotation of its internal blades, evenly conveys the material into the conveying pipeline, ensuring the continuity and stability of the material supply. The lower part of the rotary feeder uses an inclined discharge pipe, with the material falling in the same direction as the airflow. Positive pressure pneumatic conveying uses a Roots blower 10 to output positive pressure air. An inlet is installed on the conveying pipeline 9, through which coarse carbon black can be conveyed to the collection silo 8 for buffering.
[0035] In some embodiments, a pressure relief dust collector 11 is installed on the top of the collection silo 8, and a conveying screw conveyor 12 is connected to the bottom. The pyrolysis carbon black conveying equipment also includes a bucket elevator 13 connected to the conveying screw conveyor 12, and a wire separator 14 connected to the bucket elevator 13. Furthermore, a pressure relief dust collector 11 is installed on the right side of the top of the collection silo 8, and a conveying screw conveyor 12 is installed at the bottom of the silo. The output powder enters the bucket elevator 13, and a wire separator 14 is installed at the outlet of the bucket elevator 13.
[0036] The wire separator 14 has an outlet for ferromagnetic materials on the left and an outlet for carbon black materials on the right.
[0037] The working process of the above-mentioned pyrolysis carbon black conveying equipment is as follows:
[0038] The pyrolysis carbon black enters the delivery tank 2 from the buffer silo 1. Because the crude carbon black has a light specific gravity and high bulk density, the gas is prone to backflow during positive pressure conveying. The backflow force hinders the material from moving downward and thus affects the conveying efficiency. This utility model connects the buffer silo 1 and the delivery tank 2 through the exhaust pipe 3, which effectively prevents gas backflow and accumulation and ensures the conveying efficiency of the pyrolysis carbon black. At the same time, by installing a dust collector 4 on the top of the buffer silo 1, the pollution problem caused by dust leakage is further avoided.
[0039] The aforementioned positive pressure conveying pyrolysis carbon black conveying equipment utilizes compressed air to propel the material to the target location. The high airflow pressure within the equipment allows for stable material transport over long distances with minimal risk of blockages. This stable conveying capability is particularly important for long-distance, large-volume material transport. It can adapt to the transport of various materials, including solid particles and powders. Precise conveying control can be achieved by adjusting parameters such as airflow speed and pressure. The use of fully enclosed pipelines effectively prevents leakage and dust generation during transport, reducing environmental pollution and hazards to operators. This enclosed conveying method also results in a cleaner production environment, contributing to a better corporate image and product quality.
[0040] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0041] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A pyrolysis carbon black conveying device, characterized in that, Transporting pyrolytic carbon black under positive pressure includes: The buffer hopper has a feed inlet and an air inlet at the top, and a discharge outlet at the bottom. The feeding tank has a feed inlet and an air outlet at the top, and a discharge outlet at the bottom, with the feed inlet connected to the discharge outlet of the buffer silo. An exhaust pipe connects the air inlet of the buffer silo to the air outlet of the delivery tank; A dust collector is located at the top of the buffer silo and is connected to the buffer silo.
2. The pyrolysis carbon black conveying equipment according to claim 1, characterized in that, The top circumference of the buffer silo is evenly provided with several air inlets, and the top circumference of the sending tank is evenly provided with air outlets corresponding to the number of air inlets of the buffer silo. The air outlet of each sending tank is connected to the air inlet of the buffer silo through the exhaust pipe.
3. The pyrolysis carbon black conveying equipment according to claim 1, characterized in that, An exhaust valve is installed on the exhaust pipe.
4. The pyrolysis carbon black conveying equipment according to claim 1, characterized in that, The pyrolysis carbon black conveying equipment also includes a vibrating screen connected to the feed inlet of the buffer silo.
5. The pyrolysis carbon black conveying equipment according to claim 4, characterized in that, The vibrating screen includes a screen body, a base, a vibrating motor connected to the screen body, a spring connected between the screen body and the base, and a screen mesh disposed in the screen body. The screen body has a feed inlet and a discharge outlet. The feed inlet is located above one end of the screen mesh, and the discharge outlet is located below the other end of the screen mesh.
6. The pyrolysis carbon black conveying equipment according to claim 5, characterized in that, The vibrating screen is inclined downwards from the feed inlet end to the discharge outlet end.
7. The pyrolysis carbon black conveying equipment according to claim 5, characterized in that, The pyrolysis carbon black conveying equipment also includes a cooling water slag discharge screw conveyor connected to the feed inlet of the vibrating screen.
8. The pyrolysis carbon black conveying equipment according to claim 1, characterized in that, The pyrolysis carbon black conveying equipment also includes a collection bin connected to the discharge port of the sending tank. The collection bin is connected to the sending tank via a conveying pipe, and the conveying pipe is connected to a Roots blower.
9. The pyrolysis carbon black conveying equipment according to claim 8, characterized in that, The top of the collection silo is equipped with a pressure relief dust collector, and the bottom is connected to a conveying screw conveyor.
10. The pyrolysis carbon black conveying equipment according to claim 9, characterized in that, The pyrolysis carbon black conveying equipment also includes a bucket elevator connected to the conveying screw conveyor, and a wire separator connected to the bucket elevator.