A continuous multi-stage magnetic separation device for pyrolysis carbon black
Through the continuous multi-stage magnetic separation device, the cracked carbon black is subjected to multiple magnetic separation and crushing treatments, which solves the problem of incomplete separation of steel wires in carbon black, improves the processing accuracy and utilization rate of carbon black, and realizes the carbon black Efficient separation and utilization.
Patent Information
- Application Number
- CN201911071516.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2019-11-05
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2039-11-05
AI Technical Summary
After the existing crushed old tires are pyrolyzed, steel wires still exist in the carbon black, which makes it impossible to finely grind and granulate the carbon black, affecting its utilization rate and economicality.
The continuous multi-stage magnetic separation device is adopted, including a magnetic separator, a closed shell, a negative pressure equipment and a carbon black silo. Through multiple magnetic separation and crushing treatments, the thick and thin steel wires are separated and collected to improve the processing accuracy of carbon black and Utilization.
Through multiple magnetic separation and crushing treatments, the processing accuracy and utilization rate of cracked carbon black is significantly improved, ensuring that the magnetic separation process of carbon black is carried out in a closed environment, avoiding leakage of carbon black particles, and improving the fineness of carbon black Grinding and granulation capacity.
Smart Images
Figure CN110756320B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of waste tire thermal cracking equipment, and in particular to a continuous multi-stage magnetic separation device for cracking carbon black. Background Art
[0002] The usual method of recycling and reusing waste tires is to first cut the entire tire bead, then crush the tire, and then make the fragments into rubber powder, recycled rubber or use it for pyrolysis. The pyrolysis technology of waste tires is to crack the rubber polymer of waste tires into pyrolysis gas, pyrolysis oil and pyrolysis carbon black at a specific temperature under the condition of lack of oxygen or inert gas. The pyrolysis gas produced is the energy source for pyrolysis of waste tires, the oil and carbon black produced are the main products of pyrolysis of waste tires, and recycled carbon black is the key product of pyrolysis of tires. Pyrolysis carbon black can be used as a raw material for making tires after grinding, modification, granulation, drying and screening.
[0003] The existing separation process of carbon black and steel wire after pyrolysis of crushed old tires is not ideal in terms of practicality and economy because the steel wire is easy to agglomerate due to the high pyrolysis temperature, and the separation of carbon black and steel wire is not complete. A small amount of steel wire still exists in the carbon black, which makes it impossible to finely grind and granulate the carbon black. Summary of the invention
[0004] In view of the shortcomings of the above-mentioned background technology, the purpose of the present invention is to provide a continuous multi-stage magnetic separation device for pyrolysis carbon black, which can improve the processing accuracy of pyrolysis carbon black through multiple magnetic separations and improve the utilization rate of carbon black after pyrolysis of waste rubber.
[0005] In order to achieve the above objectives, the following technical solutions are adopted:
[0006] A continuous multi-stage magnetic separation device for cracking carbon black comprises a magnetic separator, a closed shell, a negative pressure device and a carbon black silo, wherein the magnetic separator is surrounded by the closed shell, and a cracking carbon black feed port and a carbon black discharge port are provided on the closed shell, wherein the carbon black discharge port is connected to the carbon black silo, and the carbon black silo is connected to the negative pressure device, and the magnetic separation device further comprises a coarse steel wire collection bin, a fine steel wire collection bin and a pulverizing device; the pulverizing device is connected to the outlet of the carbon black silo, and the pulverizing device comprises a spiral pulverizer and a pneumatic conveying pipeline, wherein the outlet of the carbon black silo is connected to the feed port of the spiral pulverizer via the pneumatic conveying pipeline, and the discharge port of the spiral pulverizer is connected to the cracking carbon black feed port via a conveying pipeline.
[0007] Furthermore, the pulverizing equipment also includes a blower, through which cold air is transported to the pneumatic conveying pipeline.
[0008] Furthermore, a first closed conveying pipeline and a second closed conveying pipeline are respectively provided at the steel wire outlet of the magnetic separator.
[0009] Furthermore, the outlet of the first closed conveying pipeline is connected to the inlet of the thick steel wire collection bin, and the outlet of the second closed conveying pipeline is connected to the inlet of the thin steel wire collection bin.
[0010] Furthermore, gate valves are provided on the first closed conveying pipeline and the second closed conveying pipeline.
[0011] Furthermore, a filtering device is provided between the carbon black silo and the negative pressure device, the carbon black silo is connected to the inlet of the filtering device, and the air outlet of the filtering device is connected to the negative pressure device.
[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0013] The multi-stage magnetic separation device of the present invention is used to magnetically separate the steel wires in the carbon black after cracking. After the carbon black after initial cracking is subjected to the first magnetic separation by a magnetic separator, the coarse steel wires are collected into a coarse steel wire collection bin. At the same time, the cracked carbon black is collected into a carbon black material bin by a negative pressure device. After that, the cracked carbon black is transported to a spiral crusher through a pneumatic conveying pipeline. The crushed cracked carbon black is again transported to a magnetic separator for secondary magnetic separation, and the crushed fine steel wires are collected into a fine steel wire collection bin. After multiple magnetic separations, the processing accuracy of the cracked carbon black is improved, the utilization rate of the carbon black after the waste rubber cracking treatment is improved, and the entire magnetic separation process of the cracked carbon black is ensured to be in a closed environment, so that the continuous feeding of the cracked carbon black can be realized. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0015] Figure 1 It is a schematic structural diagram of a continuous multi-stage magnetic separation device for cracking carbon black of the present invention;
[0016] Figure 2 It is a schematic diagram of the partial structure of the continuous multi-stage magnetic separation device of the present invention from the left side.
[0017] Description of the drawings: 1-magnetic separator; 2-sealed shell; 3-negative pressure equipment; 4-carbon black silo; 5-coarse steel wire collection bin; 6-fine steel wire collection bin; 7-spiral crusher; 8-pneumatic conveying pipeline; 9-blower; 10-filtering equipment; 11-discharge valve; 101-first closed conveying pipeline; 102-second closed conveying pipeline; 103-gate valve; 201-pyrolysis carbon black feed inlet; 202-carbon black discharge port. DETAILED DESCRIPTION
[0018] The specific implementation of the present invention is described in detail below in conjunction with specific examples. It should be understood that the specific implementation described herein is only used to illustrate and explain the present invention, and is not used to limit the present invention.
[0019] like Figure 1 As shown, the continuous multi-stage magnetic separation device for cracking carbon black provided by the embodiment of the present invention includes a magnetic separator 1, a closed shell 2, a negative pressure device 3 and a carbon black silo 4, the magnetic separator 1 is surrounded by the closed shell 2, and the closed shell 2 is provided with a cracking carbon black feed port 201 and a carbon black discharge port 202, the carbon black discharge port 202 is connected to the carbon black silo 4, and the carbon black silo 4 is connected to the negative pressure device 3, the magnetic separation device also includes a coarse steel wire collection bin 5, a fine steel wire collection bin 6 and a crushing device; the crushing device is connected to the outlet of the carbon black silo 4, the crushing device includes a spiral crusher 7 and a pneumatic conveying pipeline 8, the outlet of the carbon black silo 4 is connected to the feed port of the spiral crusher 7 through the pneumatic conveying pipeline 8, and the discharge port of the spiral crusher 7 is connected to the cracking carbon black feed port 201 through a conveying pipeline.
[0020] Working principle: The carbon black after initial cracking is fed into the magnetic separator 1 through the cracking carbon black feed port 201, and the steel wire in the cracked carbon black is magnetically separated. After the carbon black after initial cracking is subjected to the initial magnetic separation by the magnetic separator 1, the coarse steel wire is collected into the coarse steel wire collection bin 5, and the cracked carbon black is collected into the carbon black bin 4 by the negative pressure device 3 at the same time, and then the cracked carbon black 4 is transported to the spiral crusher 7 through the pneumatic conveying pipeline 8, and the cracked carbon black after crushing is transported to the magnetic separator 1 again for secondary magnetic separation, and the crushed fine steel wire is collected into the fine steel wire collection bin 6, and the cracked carbon black after the secondary magnetic separation is collected into the carbon black bin 4 under the action of the negative pressure device 3, and after the whole magnetic separation process is completed, the cracked carbon black is discharged through the discharge valve 11 set at the bottom of the carbon black bin 4 to enter the next processing process. In the present invention, the processing accuracy of the cracked carbon black is improved through multiple magnetic separation processes, thereby improving the utilization rate of the carbon black after the waste rubber cracking process.
[0021] In order to further optimize the above technical solution, in the present embodiment, the pulverizing equipment further comprises a blower 9 , through which the cold air is transported to the pneumatic conveying pipeline 8 .
[0022] The blower 9 delivers cold air to the pneumatic conveying pipe 8, which not only helps to transport the cracked carbon black material, but also helps to cool the cracked carbon black, avoid the steel wire from agglomerating due to high temperature, and improve its crushing effect, so as to improve the magnetic separation efficiency.
[0023] In this embodiment, a first closed conveying pipeline 101 and a second closed conveying pipeline 102 are respectively provided at the steel wire outlet of the magnetic separator 1 .
[0024] Among them, the outlet of the first closed conveying pipeline 101 is connected to the inlet of the thick steel wire collecting bin 5, and the outlet of the second closed conveying pipeline 102 is connected to the inlet of the thin steel wire collecting bin 6.
[0025] The steel wires with different degrees of crushing separated in the previous and subsequent magnetic separation processes are collected and processed separately to facilitate the next process operation; the closed collection of the steel wires is achieved, the sealing and environmental protection of the entire process are improved, and the leakage of carbon black particles to pollute the environment is avoided.
[0026] More preferably, gate valves 103 are provided on the first closed conveying pipeline 101 and the second closed conveying pipeline 102 .
[0027] When collecting thick steel wires, the gate valve 103 on the first closed conveying pipeline 101 is in an open state, and the gate valve on the second closed conveying pipeline 102 is closed; when collecting thin steel wires, the gate valve 103 on the first closed conveying pipeline 101 is in a closed state, and the gate valve on the second closed conveying pipeline 102 is in an open state. During other times such as magnetic separation and crushing, the gate valve 103 is in a closed state to ensure that the device is always in a closed environment.
[0028] In order to further optimize the above technical solution, a filtering device 10 is also arranged between the carbon black silo 4 and the negative pressure device 3, the carbon black silo 4 is connected to the inlet of the filtering device 10, and the air outlet of the filtering device 10 is connected to the negative pressure device 3.
[0029] The filtering device 10 is any filtering device that can help collect powder, such as a dust bag filter, which has a good filtering effect and avoids adverse effects on the environment.
[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.
Claims
1. A continuous multi-stage magnetic separation device for pyrolysis carbon black, comprising a magnetic separator (1), a closed shell (2), a negative pressure device (3) and a carbon black silo (4), wherein the magnetic separator (1) is surrounded by the closed shell (2), the closed shell (2) is provided with a pyrolysis carbon black feed port (201) and a carbon black discharge port (202), the carbon black discharge port (202) is connected to the carbon black silo (4), and the carbon black silo (4) is connected to the negative pressure device (3), characterized in that: The magnetic separation device further comprises a coarse steel wire collection bin (5), a fine steel wire collection bin (6) and a pulverizing device; the pulverizing device is connected to the outlet of the carbon black bin (4), the pulverizing device comprises a spiral pulverizer (7) and a pneumatic feeding pipeline (8); the outlet of the carbon black bin (4) is connected to the feed port of the spiral pulverizer (7) via the pneumatic feeding pipeline (8), and the outlet of the spiral pulverizer (7) is connected to the pyrolysis carbon black feed port (201) via the feeding pipeline; a first closed conveying pipeline (101) and a second closed conveying pipeline (102) are respectively arranged at the steel wire outlet of the magnetic separator (1); the outlet of the first closed conveying pipeline (101) is connected to the inlet of the coarse steel wire collection bin (5), and the outlet of the second closed conveying pipeline (102) is connected to the inlet of the fine steel wire collection bin (6); a filtering device (10) is further arranged between the carbon black bin (4) and the negative pressure device (3); the carbon black bin (4) ) is connected to the inlet of the filtering device (10), and the air outlet of the filtering device (10) is connected to the negative pressure device (3); the carbon black after initial cracking is fed into the magnetic separator (1) through the cracking carbon black feed port (201), and the steel wire in the carbon black after cracking is magnetically separated. After the carbon black after initial cracking is subjected to initial magnetic separation by the magnetic separator (1), the coarse steel wire is collected into the coarse steel wire collection bin (5), and the cracking carbon black is collected into the carbon black bin (4) by the negative pressure device (3), and then the carbon black after initial cracking is separated into the coarse steel wire collection bin (5). The pyrolysis carbon black is conveyed to the spiral pulverizer (7) through the pneumatic conveying pipeline (8), and the pyrolysis carbon black after pulverization is conveyed to the magnetic separator (1) again for secondary magnetic separation, and the pulverized fine steel wires are collected in the fine steel wire collection bin (6). The pyrolysis carbon black after the secondary magnetic separation is then collected in the carbon black silo (4) under the action of the negative pressure device (3). After the entire magnetic separation process is completed, the pyrolysis carbon black is discharged through the discharge valve (11) arranged at the bottom of the carbon black silo (4) to enter the next processing process.
2. A continuous multi-stage magnetic separation device for cracking carbon black according to claim 1, characterized in that: The pulverizing device further comprises a blower (9), through which cold air is transported to the pneumatic conveying pipeline (8).
3. A continuous multi-stage magnetic separation device for cracking carbon black according to claim 1, characterized in that: Gate valves (103) are provided on the first sealed conveying pipeline (101) and the second sealed conveying pipeline (102).