Pyrolysis carbon black purification system
By introducing a liquid level monitoring and cooling water mechanism into the pyrolysis carbon black purification system, the problem of overflow accidents during the purification process was solved, achieving a safe and efficient purification process and avoiding production interruptions and waste.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-03-10
AI Technical Summary
Existing pyrolysis carbon black purification processes are prone to overflow accidents, which affect the production process and cause waste. Existing technologies are difficult to effectively avoid this.
A pyrolysis carbon black purification system was designed, including a purification reactor, a buffer tank, and a cooling water system. A liquid level monitoring device is used to monitor the liquid level in real time. Combined with a stirring component and a cooling water system, overflow is prevented when the liquid level is too high. The material is transferred to the buffer tank through a pumping pipe and cooled down.
It effectively avoids overflow accidents, ensures the safety and continuity of the production process, reduces production waste, and improves purification efficiency and safety.
Smart Images
Figure CN223980488U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of chemical equipment technology, specifically relating to a pyrolysis carbon black purification system. Background Technology
[0002] Pyrolytic carbon black is produced by pyrolyzing waste tires at temperatures above 350°C in the absence of air. It consists of numerous spherical and elliptical carbon black particles and fused particles, characterized by high ash content, low surface activity, and poor reinforcing properties. These characteristics limit its application range and dosage, limiting its use to small-scale replacement of ordinary commercial carbon black in inks, masterbatches, tire airtight layers, rubber hoses, rubber belts, oil seals, and fluororubber products. Reducing the ash content of pyrolytic carbon black can improve user acceptance.
[0003] Currently, the purification of pyrolysis carbon black mainly involves acid washing or alkaline washing to remove impurities or compounds such as zinc, iron, calcium, aluminum, magnesium, and silicon dioxide from the pyrolysis carbon black. However, carbon black foam is generated in the reactor during the acid washing process. If it fills the inside of the reactor, it may overflow through the reactor's gaps, potentially causing a spillage accident that seriously affects the production process and results in waste. Utility Model Content
[0004] The purpose of this invention is to solve the problems existing in the prior art and provide a pyrolysis carbon black purification system that can avoid overflow accidents, which seriously affect the production process and cause waste.
[0005] This utility model is achieved through the following technical solution:
[0006] This utility model provides a pyrolysis carbon black purification system, including a purification reactor, a buffer tank, and a cooling water system;
[0007] The purification reactor includes a reactor body, with a material inlet and a first cooling water inlet at the top and a material outlet at the bottom. A liquid level monitoring device is installed at the top inside the reactor body, and a first stirring assembly is installed inside the reactor body.
[0008] The buffer tank includes a buffer tank body, and a first feed inlet and a second cooling water inlet are provided on the top of the buffer tank body. The first feed inlet is connected to the material outlet through a material extraction pipe.
[0009] The cooling water system includes a main cooling pipe and a first cooling branch pipe and a second cooling branch pipe connected to the main cooling pipe. The first cooling branch pipe is connected to the first cooling water inlet, and the second cooling branch pipe is connected to the second cooling water inlet.
[0010] The further improvement of this utility model is as follows:
[0011] The first stirring assembly includes a first stirring rod, on which a first stirring paddle and a first defoaming paddle are arranged sequentially from bottom to top. The first stirring rod is connected to a first motor fixed at the top of the reactor body.
[0012] The further improvement of this utility model is as follows:
[0013] An overflow port is provided on the upper part of the side wall of the reactor, and the overflow port is connected to the second feed port located on the top of the buffer tank body through an overflow pipe.
[0014] The further improvement of this utility model is as follows:
[0015] The buffer tank body is provided with a second stirring assembly, which includes a second stirring rod. The second stirring rod is provided with a second stirring paddle and a second defoaming paddle from bottom to top. The second stirring rod is connected to a second motor fixed at the top of the buffer tank body.
[0016] The further improvement of this utility model is as follows:
[0017] A liquid level monitoring device is installed at the top of the buffer tank.
[0018] The further improvement of this utility model is as follows:
[0019] The liquid level monitoring device is a radar level gauge or an ultrasonic level gauge.
[0020] The further improvement of this utility model is as follows:
[0021] Reactor level gauges are also installed in the reactor body and the buffer tank body.
[0022] The further improvement of this utility model is as follows:
[0023] The bottom of the side wall of the buffer tank is connected to a discharge pipe via a discharge pump.
[0024] The further improvement of this utility model is as follows:
[0025] One end of the first cooling branch pipe passes through the first cooling water inlet and extends into the reactor body, and a first nozzle is provided at the end of the first cooling branch pipe located inside the reactor body.
[0026] The further improvement of this utility model is as follows:
[0027] One end of the second cooling branch pipe passes through the second cooling water inlet and extends into the buffer tank body, and a second nozzle is provided at the end of the second cooling branch pipe located inside the buffer tank body.
[0028] Compared with the prior art, the beneficial effects of this utility model are:
[0029] When using this novel pyrolysis carbon black purification system to purify pyrolysis carbon black, the material enters the purification reactor through the material inlet at the top of the reactor body. The reaction is promoted by the first stirring component. During the reaction, a liquid level monitoring device monitors the liquid level (including foam) in the reactor body in real time. When the liquid level reaches the first height H1, an alarm is triggered, stopping feeding and heating. A cooling water system sprays cooling water into the purification reactor to lower the temperature. When the liquid level continues to rise or reaches the second height H2, feeding and heating are stopped, and the material in the purification reactor is pumped into a buffer tank through a suction pipe. Simultaneously, a cooling water system sprays cooling water into both the purification reactor and the buffer tank to prevent overflow accidents, which could severely affect production and cause waste. During this process, the first and second stirring components operate normally to prevent splashing. After the temperature in the purification reactor and the buffer tank drops and the liquid level stabilizes, the material in the buffer tank is discharged into a waste liquid storage tank or transported back to the purification reactor for reprocessing via a return pipe. Attached Figure Description
[0030] Figure 1 This is a schematic diagram of the structure of the first pyrolysis carbon black purification system in this utility model;
[0031] Figure 2 This is a schematic diagram of the structure of the second type of pyrolysis carbon black purification system in this utility model;
[0032] Figure 3 This is a schematic diagram of the third type of pyrolysis carbon black purification system in this utility model.
[0033] In the diagram, 1. Reactor body; 2. Material inlet; 3. First cooling water inlet; 4. Material outlet; 5. Liquid level monitoring device; 6. First stirring rod; 7. First stirring paddle; 8. First defoaming paddle; 9. First motor; 10. Buffer tank body; 11. First feed inlet; 12. Second feed inlet; 13. Second cooling water inlet; 14. Pumping pipe; 15. Pumping pump; 16. Overflow port; 17. Overflow pipe; 18. Main cooling pipe; 19. First cooling branch pipe; 20. Second cooling branch pipe; 21. First nozzle; 22. Second nozzle; 23. Heat exchanger; 24. Heating jacket; 25. Heater; 26. Second stirring rod; 27. Second stirring paddle; 28. Second defoaming paddle; 29. Second motor; 30. Discharge pump; 31. Discharge pipe. Detailed Implementation
[0034] The present invention will now be described in further detail with reference to the accompanying drawings:
[0035] like Figure 1 , Figure 2 and Figure 3 As shown, this utility model embodiment provides a pyrolysis carbon black purification system, including a purification reactor, a buffer tank, and a cooling water mechanism;
[0036] The purification reactor includes a reactor body 1, with a material inlet 2 and a first cooling water inlet 3 at the top and a material outlet 4 at the bottom. A radar level gauge or ultrasonic level gauge 5 is installed at the top inside the reactor body 1, and a first stirring assembly is installed inside the reactor body 1.
[0037] The buffer tank includes a buffer tank body 10. The top of the buffer tank body 10 is provided with a first feed inlet 11 and a second cooling water inlet 13. The first feed inlet 11 is connected to the material outlet 4 through a material extraction pipe 14.
[0038] The cooling water system includes a main cooling pipe 18 and a first cooling branch pipe 19 and a second cooling branch pipe 20 connected to the main cooling pipe 18. The first cooling branch pipe 19 is connected to the first cooling water inlet 3, and the second cooling branch pipe 20 is connected to the second cooling water inlet 13.
[0039] The liquid level monitoring device 5 is a radar liquid level gauge or an ultrasonic liquid level gauge. The radar liquid level gauge or ultrasonic liquid level gauge can accurately monitor the highest point of the liquid surface containing foam in the reactor body 1 in real time, that is, the height of the foam above the liquid surface, and is not affected by the environment such as acid mist and stirring.
[0040] When pyrolysis carbon black undergoes a purification reaction, the material (e.g., a mixture of pyrolysis carbon black and water or a low-concentration acid) enters the purification reactor through the material inlet 2 at the top of the reactor body 1. The reaction is promoted by the action of the first stirring component. During the reaction, the liquid level monitoring device 5 monitors the liquid level (including foam) in the reactor body 1 in real time. When the liquid level monitoring device 5 detects that the liquid level has reached the first height H1, an alarm is triggered. At this time, feeding and heating are stopped, and cooling water is sprayed into the purification reactor to lower the temperature. When the liquid level monitoring device 5 detects... When the liquid level continues to rise or reaches the second height H2, feeding and heating are stopped, and the material in the purification reactor is pumped into the buffer tank through the pumping pipe 14. At the same time, cooling water is sprayed into the purification reactor and the buffer tank to cool them down, so as to avoid overflow accidents, which would seriously affect the production process and cause waste. During this process, the first stirring component works normally to avoid splashing. After the temperature in the purification reactor and the buffer tank drops and the liquid level stabilizes, the material in the buffer tank is discharged into the waste liquid storage tank, or transported back to the purification reactor for reprocessing through the return pipe.
[0041] In a preferred embodiment of this invention, the first stirring assembly includes a first stirring rod 6, on which a first stirring paddle 7 and a first defoaming paddle 8 are sequentially arranged from bottom to top. The first stirring rod 6 is connected to a first motor 9 fixed to the top of the reactor body 1, and the first motor 9 controls the rotation of the first stirring rod 6. The first stirring paddle 7 is used to stir the reaction material composed of acid solution and pyrolysis carbon black. Since pyrolysis carbon black is not easily mixed with acid solution, a stirring paddle is needed to ensure thorough mixing of the material, thereby improving purification efficiency and effect. The first defoaming paddle 8 is used to break up the foam generated during the reaction. Since foam is usually above the reaction material, in this invention, the first defoaming paddle 8 is positioned above the first stirring paddle 7.
[0042] As a preferred embodiment of the present invention, an overflow port 16 is provided on the upper part of the side wall of the reactor body 1. The overflow port 16 is connected to the second feed port 12 provided on the top of the buffer tank body 10 through an overflow pipe 17. Preferably, valves are provided on the overflow pipe 17 and the extraction pipe 14.
[0043] When the purification reactor is used as a fully mixed flow reactor, the pickling process is a continuous reaction (at this time, the feed pipe is inserted into the material inlet 2 and extends to the bottom of the reactor body). The material continuously enters the purification reactor through the material inlet 2, and the material that has completed the reaction also flows out of the purification reactor and into the buffer tank through the overflow port 16 and the overflow pipe 17 in sequence. At this time, during the normal purification reaction process, the valve on the extraction pipe is in the closed state.
[0044] When the purification reactor is used as a batch reactor (at this time, the feed pipe is inserted into the material inlet 2, and it can be located above or below the liquid surface), the material enters the purification reactor through the material inlet 2 at once for purification reaction. After the reaction is completed, the first stirring component cannot be stopped immediately, as the rotating stirring paddle will slow down the material outflow speed. The material can be quickly extracted by the pump 15 set on the extraction pipe 14. If the purification reactor is located much higher than the buffer tank and the discharge speed is fast enough, the pump may not be necessary. At this time, the valve on the overflow pipe 17 is always closed.
[0045] Regardless of whether the purification reactor is a fully mixed flow reactor or a batch reactor, once the liquid level monitoring device 5 detects that the liquid level in the purification reactor is continuously rising or reaches a sufficient height, the material in the purification reactor is pumped into the buffer tank through the extraction pipe 14 while the first stirring component is running continuously. At the same time, a cooling water system is used to spray cooling water into the purification reactor and the buffer tank to cool them down, so as to avoid overflow accidents, which would seriously affect the production process and cause waste.
[0046] In a preferred embodiment of this utility model, the purification reactor further includes a heating device for preheating the materials or heating them during the reaction process; such as Figure 1 As shown, the heating device includes a heat exchanger 23. The outlet of the heat exchanger 23 is connected to the material inlet 2 of the reactor body 1. When purifying pyrolysis carbon black, it is first heated by the heat exchanger 23 to a temperature higher than the reaction temperature. No heating is then performed in the reactor, thus improving equipment safety. Figure 2 As shown, a heating jacket 24 is provided on the outside of the reactor body 1 for heating during the acid washing and purification process, thereby improving reaction efficiency and effectiveness. Figure 3 The reactor body 1 is equipped with a heater 25 for heating during the acid washing and purification process, thereby improving the reaction efficiency and effect.
[0047] In a preferred embodiment of this invention, a reactor level gauge is provided on the inner wall of the reactor body 1 to monitor the actual amount of material inside the reactor body. Preferably, the reactor level gauge can be a pressure level gauge or a communicating vessel level gauge.
[0048] In a preferred embodiment of this utility model, a second stirring assembly is provided inside the buffer tank body 10. The second stirring assembly includes a second stirring rod 26, on which a second stirring paddle 27 and a second defoaming paddle 28 are arranged sequentially from bottom to top. The second stirring rod 26 is connected to a second motor 29 fixed to the top of the buffer tank body 10, and the second stirring rod 26 is rotated by the second motor 29. The second stirring paddle 27 is used to stir the material in the buffer tank to ensure that the material in the buffer tank is uniform; the second defoaming paddle 28 is used to break up the foam in the buffer tank. As a further preferred embodiment, a liquid level monitoring device 5 is provided at the top of the buffer tank body 10. The liquid level monitoring device 5 is a radar liquid level gauge or an ultrasonic liquid level gauge. Since a small amount of foam is also present in the normally discharged reaction material, the possibility of overflow is not high if there is no heating, no continued large-scale chemical reaction, and no vigorous stirring. However, in case of any eventuality, a radar liquid level gauge or an ultrasonic liquid level gauge is used to monitor the liquid level (including foam) in the buffer tank. As a further preferred embodiment, a reactor level gauge is also installed inside the buffer tank body 10. Preferably, the reactor level gauge can be a pressure level gauge or a communicating vessel level gauge, used to monitor the actual liquid level height in the buffer tank. More preferably, a discharge pipe 31 is connected to the bottom of the side wall of the buffer tank body via a discharge pump 30.
[0049] In a preferred embodiment of the present invention, one end of the first cooling branch pipe 19 passes through the first cooling water inlet 3 and extends into the reactor body 1, and a first nozzle 21 is provided at one end of the first cooling branch pipe 19 located in the reactor body 1; one end of the second cooling branch pipe 20 passes through the second cooling water inlet 13 and extends into the buffer tank body 10, and a second nozzle 22 is provided at one end of the second cooling branch pipe 20 located in the buffer tank body 10.
[0050] The working principle of this novel pyrolysis carbon black purification system is as follows:
[0051] When the purification reactor is used as a fully mixed flow reactor, the pickling process is a continuous reaction. The material (e.g., a mixture of pyrolyzed carbon black and water or low-concentration acid) continuously enters the purification reactor through the material inlet 2, and the material that has completed the reaction also continuously flows out of the purification reactor through the overflow outlet 16 and the overflow pipe 17 into the buffer tank. At this time, during the normal purification reaction process, the valve on the material extraction pipe 14 is in the closed state.
[0052] When the purification reactor is used as a batch reactor, the material (e.g., a mixture of pyrolyzed carbon black and water or low-concentration acid) enters the purification reactor in one go through the material inlet 2 for purification reaction. After the reaction is completed, the first stirring component cannot be stopped immediately, as the rotating stirring paddle will slow down the material outflow rate. The material can be quickly extracted by the pump 15 installed on the extraction pipe 14. If the purification reactor is located much higher than the buffer tank and the discharge rate is fast enough, the pump may not be necessary. In this case, the valve on the overflow pipe remains closed.
[0053] Regardless of whether the purification reactor is a fully mixed flow reactor or a batch reactor, during the reaction process, a liquid level monitoring device 5 is used to monitor the liquid level (including foam) in the purification reactor in real time. When the liquid level monitoring device 5 detects that the liquid level reaches the first height H1, an alarm is triggered. At this time, feeding is stopped, the heating device is turned off, and cooling water is sprayed into the purification reactor to cool it down. When the liquid level monitoring device 5 detects that the liquid level continues to rise or reaches the second height H2, feeding is stopped, the heating device is turned off, and the material in the purification reactor is pumped into the buffer tank through the extraction pipe 14. At the same time, cooling water is sprayed into the purification reactor and the buffer tank to cool them down, so as to avoid overflow accidents, which would seriously affect the production process and cause waste. During this process, the first and second stirring components work normally to avoid splashing. After the temperature in the purification reactor and the buffer tank drops and the liquid level stabilizes, the material in the buffer tank is discharged into the waste liquid storage tank, or transported back to the purification reactor for reprocessing via the return pipe.
[0054] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0055] In the description of this utility model, unless otherwise stated, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0056] The above technical solution is only one implementation of this utility model. For those skilled in the art, based on the principles disclosed in this utility model, it is easy to make various types of improvements or modifications, and not limited to the technical solutions described in the above specific embodiments of this utility model. Therefore, the foregoing description is only a preferred option and does not have a limiting meaning.
Claims
1. A cleaving carbon black purification system, characterized by, The purification reactor, the buffer tank and the cooling water mechanism are included; The purification reactor comprises a reactor body, a material inlet and a first cooling water inlet are arranged at the top end of the reactor body, a material outlet is arranged at the bottom end of the reactor body, a liquid level monitoring device is arranged at the top end inside the reactor body, and a first stirring assembly is arranged in the reactor body; The buffer tank comprises a buffer tank body, a first material inlet and a second cooling water inlet are arranged at the top of the buffer tank body, and the first material inlet is connected with the material outlet through a material pumping pipeline; The cooling water mechanism comprises a cooling main pipeline and first and second cooling branch pipelines connected with the cooling main pipeline, the first cooling branch pipeline is connected with the first cooling water inlet, and the second cooling branch pipeline is connected with the second cooling water inlet.
2. The pyrolysis carbon black purification system of claim 1, wherein, The first stirring assembly comprises a first stirring rod, a first stirring paddle and a first defoaming paddle are arranged on the first stirring rod from bottom to top, and the first stirring rod is connected with a first motor fixed at the top end of the reactor body.
3. The pyrolysis carbon black purification system of claim 1, wherein, An overflow port is arranged at the upper part of the side wall of the reactor, and the overflow port is connected with a second material inlet arranged at the top of the buffer tank body through an overflow pipeline.
4. The pyrolysis carbon black purification system of claim 1, wherein, A second stirring assembly is arranged in the buffer tank body, the second stirring assembly comprises a second stirring rod, a second stirring paddle and a second defoaming paddle are arranged on the second stirring rod from bottom to top, and the second stirring rod is connected with a second motor fixed at the top end of the buffer tank body.
5. The pyrolysis carbon black purification system of claim 1, wherein, A liquid level monitoring device is arranged at the top end inside the buffer tank body.
6. The pyrolysis carbon black purification system of claim 1 or 5, wherein, The liquid level monitoring device is a radar liquid level meter or an ultrasonic liquid level meter.
7. The pyrolysis carbon black purification system of claim 1, wherein, A reactor liquid level meter is further arranged in the reactor body and the buffer tank body.
8. The pyrolytic carbon black purification system of claim 1, wherein, A material discharging pipeline is connected with the bottom of the side wall of the buffer tank through a material discharging pump.
9. The pyrolytic carbon black purification system of claim 1, wherein, One end of the first cooling branch pipeline penetrates through the first cooling water inlet and extends into the reactor body, and a first spray head is arranged at the end of the first cooling branch pipeline in the reactor body.
10. The pyrolysis carbon black purification system of claim 1, wherein, One end of the second cooling branch pipeline penetrates through the second cooling water inlet and extends into the buffer tank body, and a second spray head is arranged at the end of the second cooling branch pipeline in the buffer tank body.