A modified pyrolysis carbon black drying apparatus

Abstract

The utility model provides a kind of modified pyrolysis carbon black drying equipment, belong to pyrolysis carbon black processing equipment field, including drying tower, atomizer, pyrolysis carbon black passageway, compressed gas passageway;Drying tower has first shell and high-temperature flue gas import, first shell inside surface encloses first chamber, high-temperature flue gas import is established in first shell top and is communicated with first chamber;Atomizer is located in first chamber, and it includes: second shell, baffle, compressed gas import, granule export;Pyrolysis carbon black passageway one end penetrates first shell and second shell, passes through compressed gas chamber and is communicated with atomization chamber by baffle opening;Compressed gas passageway one end penetrates first shell, and compressed air is transported to compressed gas chamber along tangent direction by compressed gas import.The utility model solves the technical problem that energy consumption is high and heat utilization is low when modified pyrolysis carbon black is dried, effectively improves heat utilization rate and reduces fuel consumption.

Description

Technical Field

[0001] This utility model belongs to the field of pyrolytic carbon black processing equipment, and particularly relates to a modified pyrolytic carbon black drying equipment. Background Technology

[0002] Waste tire pyrolysis is an irreversible thermochemical reaction that occurs under anaerobic or oxygen-deficient conditions, utilizing high temperatures to decompose the organic matter in waste tires, releasing volatile products and forming solid coke. Waste tire pyrolysis is currently a popular method for processing waste tires, breaking them down into tire oil, carbon black, steel wire, and combustible gases. Carbon black accounts for 30%-35% of the products, making it the second largest byproduct of tire pyrolysis. Pyrolytic carbon black cannot be used directly and requires modification and drying to meet reuse requirements. However, drying modified pyrolytic carbon black suffers from high energy consumption and low heat utilization. Utility Model Content

[0003] 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.

[0004] This invention proposes a modified pyrolytic carbon black drying equipment, which solves the technical problems of high energy consumption and low heat utilization rate in the drying process of modified pyrolytic carbon black, effectively improving the heat utilization rate and thus reducing fuel consumption.

[0005] This utility model discloses a modified pyrolytic carbon black drying device, comprising: a drying tower, an atomizer, a pyrolytic carbon black channel, and a compressed gas channel; the drying tower has a first shell and a high-temperature flue gas inlet, the inner side of the first shell forming a first chamber, the high-temperature flue gas inlet being located at the top of the first shell and communicating with the first chamber; the atomizer is located in the first chamber and includes: a second shell, a partition, a compressed gas inlet, and a particle outlet; the inner side of the second shell forms a second chamber; the partition is located in the second chamber and divides the second chamber into a compressed gas chamber located below and an atomizing chamber located above, the partition having several openings connecting the compressed gas chamber and the atomizing chamber, and a partition opening located in the middle of the partition; the compressed gas inlet is located on the side of the second shell; the particle outlet is located at the top of the second shell and is opposite to the high-temperature flue gas inlet; one end of the pyrolytic carbon black channel penetrates through the first shell and the second shell, passes through the compressed gas chamber, and communicates with the atomizing chamber through the partition opening; one end of the compressed gas channel penetrates through the first shell and delivers compressed air tangentially into the compressed gas chamber through the compressed gas inlet.

[0006] In some embodiments, the high-temperature flue gas inlet is located at the top center of the first housing, and the atomizer is located at the center of the first chamber.

[0007] In some embodiments, the atomizer further includes a plurality of nozzles that communicate with the atomizing chamber and the first chamber via a particle outlet.

[0008] In some embodiments, the nozzle is a spiral nozzle.

[0009] In some embodiments, the modified pyrolytic carbon black drying equipment also includes an air compressor connected to the other end of a compressed air passage.

[0010] In some embodiments, the modified pyrolytic carbon black drying equipment also includes a storage tank connected to the other end of the pyrolytic carbon black channel.

[0011] In some embodiments, the modified pyrolytic carbon black drying equipment further includes a high-temperature flue gas supply assembly connected to the first chamber via a high-temperature flue gas inlet; the high-temperature flue gas supply assembly includes: a high-temperature flue gas inlet pipe, a heat exchanger connected to the high-temperature flue gas inlet pipe, and a supplementary heating furnace connected to the heat exchanger.

[0012] In some embodiments, the modified pyrolytic carbon black drying equipment further includes a recovery fan and a first cyclone dust collector connected to the first housing.

[0013] In some embodiments, the drying tower further includes a discharge port located at the bottom of the first shell, and a discharge valve is provided on the discharge port.

[0014] In some embodiments, the modified pyrolytic carbon black drying equipment further includes a crude carbon black silo connected to the drying tower via a discharge port, a conveying screw conveyor connected to the crude carbon black silo, a grinding mill connected to the conveying screw conveyor, and a second cyclone dust collector connected to the grinding mill.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention provides a modified pyrolytic carbon black drying device that uses an atomizer to convert liquid into micron-sized particles, thereby improving heat utilization, reducing fuel consumption, and ensuring the drying effect of pyrolytic carbon black. Attached Figure Description

[0016] 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: Figure 1 This is a schematic diagram of the structure of the modified pyrolytic carbon black drying equipment provided in an embodiment of the present invention; Figure 2 This is a cross-sectional view of the atomizer provided in an embodiment of the present utility model; Figure 3 Another cross-sectional view of the atomizer provided in this embodiment of the utility model; In the above figures: 1. Drying tower; 101. First chamber; 2. Atomizer; 201. Second shell; 202. Baffle; 203. Compressed gas chamber; 204. Atomizing chamber; 205. Nozzle; 3. Pyrolytic carbon black channel; 4. Compressed gas channel; 5. Air compressor; 6. Storage tank; 701. High-temperature flue gas inlet pipe; 702. Heat exchanger; 703. Reheating furnace; 8. Recovery fan; 9. First cyclone dust collector; 10. Coarse carbon black silo; 11. Conveying screw conveyor; 12. Grinding mill; 13. Second cyclone dust collector. Detailed Implementation

[0017] 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.

[0018] This utility model embodiment provides a modified pyrolytic carbon black drying device. Figure 1 This is a schematic diagram of the structure of a modified pyrolytic carbon black drying device according to an embodiment of the present invention. (Reference) Figure 1 As shown, the modified pyrolytic carbon black drying equipment includes: a drying tower 1, an atomizer 2, a pyrolytic carbon black channel 3, and a compressed gas channel 4; the drying tower 1 has a first shell and a high-temperature flue gas inlet, the inner side of the first shell forming a first chamber 101, and the high-temperature flue gas inlet is located at the top of the first shell and communicates with the first chamber 101; the atomizer 2 is located inside the first chamber 101, as shown in the figure. Figure 2 , 3 As shown, it includes: a second housing 201, a partition 202, a compressed air inlet, and a particle outlet; the inner side of the second housing 201 forms a second chamber; the partition 202 is disposed in the second chamber and divides the second chamber into a compressed air chamber 203 located below and an atomizing chamber 204 located above; the partition 202 has several openings connecting the compressed air chamber 203 and the atomizing chamber 204, and an opening in the middle of the partition 202; the compressed air inlet is located on the side of the second housing 201; the particle outlet is located on the top of the second housing 201 and is positioned opposite to the high-temperature flue gas inlet; one end of the pyrolytic carbon black channel 3 passes through the first housing and the second housing 201, passes through the compressed air chamber 203, and communicates with the atomizing chamber 204 through the opening in the partition 202; one end of the compressed air channel 4 passes through the first housing and delivers compressed air tangentially to the compressed air chamber 203 through the compressed air inlet.

[0019] In the aforementioned modified pyrolytic carbon black drying equipment, compressed air is supplied to the high-speed atomizer 2 through the compressed air channel 4. The high-speed airflow impacts the liquid in the atomization chamber 204, causing it to break into tiny droplets. The high-speed airflow interacts with the liquid material through friction and shearing, breaking the liquid film into fine filaments and then into droplets, achieving the atomization effect and enabling faster and better drying of the pyrolytic carbon black. The high-speed atomizer 2 has a slurry inlet at the lower part of its valve body. The pyrolytic carbon black channel 3 passes through the slurry inlet and penetrates the second housing 201. A compressed air inlet is tangentially located on the lower left side of the valve body. A partition 202 is installed in the second chamber, with several 4.5 mm air pressure equalization holes. In the top atomization chamber 204, the high-speed airflow interacts with the liquid material through friction and shearing, thoroughly mixing with the slurry. This modified pyrolytic carbon black drying equipment utilizes the atomizer 2 to convert the liquid into micron-sized particles, improving heat utilization and reducing fuel consumption while ensuring the drying effect of the pyrolytic carbon black.

[0020] In some embodiments, the high-temperature flue gas inlet is located at the top center of the first housing, and the atomizer 2 is located at the center of the first chamber 101.

[0021] The high-speed atomizer 2 is positioned in the middle of the drying tower 1. This central placement ensures a certain distance between the atomizer 2 and the top of the drying tower 1, preventing droplets from directly impacting the tower wall before complete drying and causing them to stick. Simultaneously, the central position balances the hot air distribution, resulting in a more uniform residence time for droplets within the drying tower 1 and preventing localized overheating or undercooling. The high-speed atomizer 2 operates on the principle of atomization and mesh microporous technology, converting the liquid into micron-sized particles through high-speed airflow or high-frequency vibration. A high-temperature flue gas inlet is vertically positioned at the top center of the drying tower 1, and a flow control valve is installed on the high-temperature flue gas outlet duct.

[0022] In some embodiments, the atomizer 2 further includes a plurality of nozzles 205 that communicate with the atomizing chamber 204 and the first chamber 101 through a particle outlet. Further, the nozzles 205 are spiral nozzles 205.

[0023] In some embodiments, the modified pyrolytic carbon black drying equipment also includes an air compressor 5 connected to the other end of the compressed air passage 4.

[0024] The air compressor provides compressed air to the high-speed atomizer 2. The compressed air provided by the air compressor impacts the liquid in the atomizing cup through the high-speed airflow, causing it to break into tiny droplets. The high-speed airflow and the liquid material undergo friction and shearing action, breaking the liquid film into fine filaments and then into droplets, thus achieving the atomization effect.

[0025] In some embodiments, the modified pyrolytic carbon black drying equipment also includes a storage tank 6 connected to the other end of the pyrolytic carbon black channel 3.

[0026] After the pyrolysis of waste rubber, the crude carbon black discharged is added with a modifier and then transported from the inlet of storage tank 6 to the tank body for buffering. A stirring device and reducer are vertically installed on the top end of storage tank 6, driving the lower stirring blades to agitate the material inside the tank. The lower part of storage tank 6 has a conical design, and a discharge valve is installed at the bottom of the discharge port. The outlet of the discharge valve is connected to the inlet of the screw conveyor pump. The screw conveyor pump is horizontally installed, with its discharge port at a 90-degree angle to the inlet, and its discharge port is connected to the two-component conveying pipeline. A level control valve is installed on the two-component conveying pipeline, which is interlocked with the screw conveyor pump to control the material conveying rate. The screw conveyor pump, through the level control valve, pumps the two-component modified wet carbon black under high pressure into the high-speed atomizer 2 to form micron-sized particles.

[0027] In some embodiments, the modified pyrolytic carbon black drying equipment further includes a high-temperature flue gas supply assembly connected to the first chamber 101 via a high-temperature flue gas inlet; the high-temperature flue gas supply assembly includes: a high-temperature flue gas inlet pipe 701, a heat exchanger 702 connected to the high-temperature flue gas inlet pipe 701, and a supplementary heating furnace 703 connected to the heat exchanger 702.

[0028] The high-temperature flue gas used for heating drying tower 1 is supplied by the heating supplementary furnace 703. If the temperature of the input high-temperature flue gas is insufficient, it is supplemented by combustion by the burner. A remote temperature controller is installed on the high-temperature flue gas outlet duct to control the inlet temperature entering drying tower 1 at approximately 320°C. The drying heat of drying tower 1 is mainly recovered and utilized from the flue gas exhaust gas emitted by pyrolysis. The temperature of the externally input high-temperature flue gas exhaust gas is generally around 200°C, which is transported to heat exchanger 702 through a high-temperature flue gas duct. A flow control valve is installed on the high-temperature flue gas duct to control the total amount of high-temperature flue gas input. The high-temperature flue gas inlet is located on the upper right side of the shell of heat exchanger 702. A heat exchange duct is installed inside the shell, and the input high-temperature flue gas flows through the shell side. The high-temperature flue gas outlet is located on the lower left side of the shell, which is connected to the make-up air duct to directly send the high-temperature flue gas into the supplementary furnace 703. A fresh air blower is located on the right side of the heat exchanger 702 shell. The incoming fresh air flows through the heat exchange duct and is then distributed to the burner via the high-temperature flue gas delivery duct. A remote temperature controller is vertically installed on the right side of the top of the drying tower 1. The remote temperature controller can monitor the heating temperature inside the drying tower 1 in real time. The remote temperature controller is interlocked with the heating and reheating furnace 703, and the temperature inside the drying tower 1 is controlled at approximately 220°C.

[0029] In some embodiments, the modified pyrolytic carbon black drying equipment further includes a recovery fan 8 and a first cyclone dust collector 9 connected to the first housing.

[0030] A dust-laden steam outlet is located in the middle of the right side of the drying tower 1. A remote temperature controller is installed on the dust-laden steam recovery pipeline to maintain the outlet temperature at approximately 140℃. The dust-laden steam outlet is connected to the recovery fan 8. The dust-laden steam recovery pipeline is also connected to the inlet of the powdered carbon black recovery cyclone dust collector. A mobile receiving and transfer box is connected to the lower discharge port of the powdered carbon black recovery cyclone dust collector for temporary storage of collected powdered carbon black. The outlet of the powdered carbon black recovery cyclone dust collector is connected to the secondary steam recovery pipeline, and the outlet is also connected to the condenser inlet. An outlet is located on the lower end of the condenser, connected to a pipe sight glass. A cooling water recovery tank is located below the pipe sight glass. An exhaust outlet is provided on the right side of the lower end cap of the condenser, which is connected to the flue gas output pipe. Its outlet is connected to the fan inlet, and the fan outlet is connected to the exhaust pipe.

[0031] In some embodiments, the drying tower 1 further includes a discharge port located at the bottom of the first shell, and a discharge valve is provided on the discharge port. In some embodiments, the modified pyrolytic carbon black drying equipment further includes a crude carbon black silo 10 connected to the drying tower 1 via the discharge port, a conveying screw conveyor 11 connected to the crude carbon black silo 10, a grinding mill 12 connected to the conveying screw conveyor 11, and a second cyclone dust collector 13 connected to the grinding mill 12.

[0032] A two-component modified material conveying pipe is installed at the lower part of the discharge port of drying tower 1. A remote temperature controller is installed on the two-component modified material conveying pipe to control the temperature of the discharged dried carbon black powder at about 120℃. Symmetrical vibrating hammers are installed at the lower part of the conical body of drying tower 1, intermittently vibrating to prevent material from adhering to the tower walls. A discharge valve is installed at the lower part of drying tower 1. Under the action of a negative pressure Roots blower drawn by a dust collector on the top of the silo, the material can be evenly discharged into the multi-component modified material conveying pipe and then enters the coarse carbon black silo 10 for buffering. A silo discharge valve is installed at the lower part of the coarse carbon black silo 10, which is connected to the inlet of the conveying screw conveyor 11. The outlet of the conveying screw conveyor 11 is connected to the inlet of the grinder 12. The powder that has passed grinding is conveyed to the carbon black powder silo for buffering via a cyclone dust collector. A blower is installed on the top of the carbon black powder silo, and the exhaust gas from the blower is discharged into the atmosphere.

[0033] The working process of the above-mentioned modified pyrolytic carbon black drying equipment is as follows: Compressed air channel 4 provides compressed air to high-speed atomizer 2. The high-speed airflow impacts the liquid in atomization chamber 204, causing it to break into tiny droplets. The high-speed airflow interacts with the liquid material through friction and shearing, breaking the liquid film into fine filaments and then into droplets, achieving atomization and enabling faster and better drying of pyrolytic carbon black. A slurry inlet is located at the lower part of the valve body of the high-speed atomizer 2. The pyrolytic carbon black channel 3 passes through the slurry inlet and penetrates the second housing 201. A compressed air inlet is tangentially located on the lower left side of the valve body. A baffle 202 is installed in the second chamber, with several compressed air equalization holes. In the top atomization chamber 204, the high-speed airflow interacts with the liquid material through friction and shearing, thoroughly mixing with the slurry.

[0034] The modified pyrolytic carbon black drying equipment described above can utilize the waste heat of flue gas to dry modified pyrolytic carbon black. In conjunction with the use of atomizer 2, it improves the heat utilization rate and thus reduces fuel consumption.

[0035] The exhaust gas emitted after pyrolysis contains a large amount of recoverable sensible heat. The flue gas waste heat exchanger 702, through efficient heat conduction and convection technology, directly captures this heat to replace fuel consumption, reducing exhaust gas temperature and heat loss. System synergistic optimization achieves energy recycling, significantly improving the overall energy efficiency of modified pyrolytic carbon black drying. Specifically: it improves the thermal efficiency of the supplementary heating furnace 703; the air heat exchanger 702 preheats the air to a higher temperature before it enters the combustion chamber of the supplementary heating furnace 703, reducing fuel consumption and thus saving energy; it reduces flue gas emissions; the air heat exchanger 702 reduces fuel consumption, thereby reducing flue gas emissions and environmental pollution; and it lowers operating costs; the air heat exchanger 702 reduces fuel consumption in the supplementary heating furnace 703, thus lowering operating costs and improving economic efficiency.

[0036] 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.

[0037] 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 modified pyrolytic carbon black drying device, characterized in that, include: A drying tower has a first shell and a high-temperature flue gas inlet. The inner side of the first shell forms a first chamber, and the high-temperature flue gas inlet is located at the top of the first shell and communicates with the first chamber. Atomizer, disposed in the first chamber, includes: The second shell has an inner surface that forms a second chamber; A partition is disposed in the second chamber and divides the second chamber into a compressed air chamber located below and an atomizing chamber located above. The partition has a plurality of openings connecting the compressed air chamber and the atomizing chamber, as well as a partition opening located in the middle of the partition. The compressed air inlet is located on the side of the second housing. The particle outlet is located at the top of the second housing and is positioned opposite to the high-temperature flue gas inlet. The pyrolytic carbon black channel has one end penetrating through the first housing and the second housing, passing through the compressed gas chamber and communicating with the atomization chamber through the partition opening; The compressed air passage extends through the first housing at one end and delivers compressed air tangentially into the compressed air chamber through the compressed air inlet.

2. The modified pyrolytic carbon black drying equipment according to claim 1, characterized in that, The high-temperature flue gas inlet is located at the top center of the first housing, and the atomizer is located in the center of the first chamber.

3. The modified pyrolytic carbon black drying equipment according to claim 1, characterized in that, The atomizer also includes a plurality of nozzles that connect the atomizing chamber and the first chamber through the particle outlet.

4. The modified pyrolytic carbon black drying equipment according to claim 3, characterized in that, The nozzle is a spiral nozzle.

5. The modified pyrolytic carbon black drying equipment according to claim 1, characterized in that, The modified pyrolytic carbon black drying equipment also includes an air compressor connected to the other end of the compressed air channel.

6. The modified pyrolytic carbon black drying equipment according to claim 1, characterized in that, The modified pyrolytic carbon black drying equipment also includes a storage tank connected to the other end of the pyrolytic carbon black channel.

7. The modified pyrolytic carbon black drying equipment according to claim 1, characterized in that, The modified pyrolytic carbon black drying equipment further includes a high-temperature flue gas supply assembly connected to the first chamber via the high-temperature flue gas inlet; the high-temperature flue gas supply assembly includes: a high-temperature flue gas inlet pipe, a heat exchanger connected to the high-temperature flue gas inlet pipe, and a reheating furnace connected to the heat exchanger.

8. The modified pyrolytic carbon black drying equipment according to claim 1, characterized in that, The modified pyrolytic carbon black drying equipment also includes a recovery fan and a first cyclone dust collector connected to the first shell.

9. The modified pyrolytic carbon black drying equipment according to claim 1, characterized in that, The drying tower also includes a discharge port located at the bottom of the first shell, and a discharge valve is provided on the discharge port.

10. The modified pyrolytic carbon black drying equipment according to claim 9, characterized in that, The modified pyrolytic carbon black drying equipment also includes a coarse carbon black silo connected to the drying tower through the discharge port, a conveying screw conveyor connected to the coarse carbon black silo, a grinding mill connected to the conveying screw conveyor, and a second cyclone dust collector connected to the grinding mill.

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