Counter-flow type thermal cracking carbon black granulating and drying equipment

Abstract

The utility model provides counter-flow type thermal cracking carbon black granulating and drying equipment, which belongs to the technical field of thermal cracking carbon black treatment and comprises a barrel, a cross lifting plate component, a plurality of spiral guide plates, a plurality of bent plate type lifting plates, a plurality of straight plate type lifting plates and a plurality of discharging inclined shoveling plates, and the spiral guide plates, the bent plate type lifting plates, the straight plate type lifting plates and the discharging inclined shoveling plates are sequentially arranged along the conveying direction of carbon black. A drying reaction area for accommodating and drying the carbon black is limited by the cylinder body, and the carbon black and the high-temperature flue gas are conveyed in opposite directions in the drying reaction area; the cross lifting board assembly is sleeved in the cylinder along the central axis of the cylinder, and the two ends of the cross lifting board assembly are fixedly connected with the cylinder through fixing pieces; the spiral guide plate, the bent plate type lifting plate, the straight plate type lifting plate and the inclined discharging shoveling plate are fixedly connected with the inner wall of the barrel body, and the included angles between the inner wall of the barrel body and the spiral guide plate, the bent plate type lifting plate, the straight plate type lifting plate and the inclined discharging shoveling plate are sequentially increased. The utility model solves the problems of poor drying effect, high energy consumption and poor quality of obtained carbon black of the existing thermal cracking carbon black granulating and drying equipment, and has the characteristics of good drying effect, energy conservation and high quality of obtained carbon black.

Description

Technical Field

[0001] This utility model belongs to the field of thermal pyrolysis carbon black processing technology, and in particular relates to a counter-current thermal pyrolysis carbon black granulation and drying equipment. Background Technology

[0002] Recycling waste tires not only alleviates their environmental impact and reduces pollution, but also enables the effective recycling of resources. Waste tire pyrolysis technology is an effective method for treating waste tires. It refers to an irreversible thermochemical reaction in which the organic matter in waste tires is decomposed at high temperatures under an oxygen-free or oxygen-deficient atmosphere, 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. Pyrolysis carbon black can be reused after granulation and drying. However, existing pyrolysis carbon black granulation and drying equipment still suffers from poor drying efficiency, high energy consumption, and poor carbon black quality. 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 utility model proposes a counter-current pyrolysis carbon black granulation and drying equipment, which solves the technical problems of poor drying effect, high energy consumption and poor carbon black quality of existing pyrolysis carbon black granulation and drying equipment. It has the characteristics of good drying effect, energy saving and high carbon black quality.

[0005] This utility model discloses a counter-current pyrolysis carbon black granulation and drying equipment, including a drying device. The drying device includes a cylinder, a cross-shaped lifting plate assembly, and several spiral guide plates, several curved lifting plates, several straight lifting plates, and several discharge inclined lifting plates arranged sequentially along the conveying direction of the carbon black. The cylinder defines a drying reaction zone for containing and drying the carbon black. One end of the cylinder has a flue gas inlet for high-temperature flue gas to enter the drying reaction zone, and the other end of the cylinder has a flue gas inlet for carbon black to enter the drying reaction zone. The carbon black inlet and the high-temperature flue gas are conveyed in opposite directions within the drying reaction zone; the cross-shaped lifting plate assembly is sleeved inside the cylinder along the central axis of the cylinder, and both ends are fixedly connected to the cylinder by fasteners; the spiral guide plate, the curved lifting plate, the straight lifting plate, and the discharge inclined lifting plate are fixedly connected to the inner wall of the cylinder, and the included angle between the spiral guide plate, the curved lifting plate, the straight lifting plate, and the discharge inclined lifting plate and the inner wall of the cylinder increases sequentially.

[0006] In some embodiments, the cross-shaped lifting plate assembly includes a mounting shaft and a plurality of central lifting plates evenly distributed circumferentially along the mounting shaft.

[0007] In some embodiments, the spiral guide plate is at a 30° angle to the inner wall of the cylinder; the curved lifting plate is at a 45° angle to the inner wall of the cylinder; the straight lifting plate is at a 125° angle to the inner wall of the cylinder; and the discharge inclined lifting plate is at a 185° angle to the inner wall of the cylinder.

[0008] In some embodiments, the central lifting plate is straight, and the curved lifting plate is curved.

[0009] In some embodiments, the spiral guide plate is installed 1-5m from the inner wall of the feed end of the cylinder; the discharge inclined plate is installed 1-2m from the inner wall of the discharge end of the cylinder.

[0010] In some embodiments, the fastener includes a support with one end fixedly connected to the mounting shaft and the other end fixedly connected to the inner wall of the cylinder.

[0011] In some embodiments, the drying apparatus further includes a drive unit that rotates the drum.

[0012] In some embodiments, the countercurrent pyrolysis carbon black granulation and drying equipment further includes a granulation device connected to the drying device, and a grinding device connected to the granulation device.

[0013] In some embodiments, the grinding device is connected to the granulation device via a cyclone dust collector.

[0014] In some embodiments, the countercurrent pyrolysis carbon black granulation and drying equipment further includes a flue gas treatment device connected to the flue gas outlet of the drying device, the flue gas treatment device further including a flue gas dust collector and a Roots blower connected to the flue gas dust collector.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This utility model provides a counter-current pyrolysis carbon black granulation and drying equipment. The counter-current drying method, in which carbon black and high-temperature flue gas are transported in opposite directions in the drying reaction zone, improves energy utilization. By setting different types of lifting plates and guide plates at different positions in the cylinder, the drying effect and carbon black quality are guaranteed. Attached Figure Description

[0017] 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:

[0018] Figure 1 This is a schematic diagram of the countercurrent pyrolysis carbon black granulation and drying equipment provided in this embodiment of the utility model;

[0019] Figure 2 This is a schematic diagram of the drying device provided in an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the cross-shaped lifting plate assembly provided in an embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the fastener provided in an embodiment of the present utility model;

[0022] In the above figures: 101, cylinder; 102, cross-shaped lifting plate assembly; 1021, mounting shaft; 1022, center lifting plate; 1023, support; 103, spiral guide plate; 104, curved plate lifting plate; 105, straight plate lifting plate; 106, discharge inclined lifting plate; 2, granulation device; 3, grinding device; 4, cyclone dust collector; 501, flue gas dust collector; 502, Roots blower. Detailed Implementation

[0023] 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.

[0024] This utility model embodiment provides a counter-current pyrolysis carbon black granulation and drying equipment. Figure 1 This is a schematic diagram of the counter-current pyrolysis carbon black granulation and drying equipment according to an embodiment of the present invention. (Reference) Figure 1 As shown, the countercurrent pyrolysis carbon black granulation and drying equipment includes at least a drying device, such as... Figure 2As shown, the drying device includes a cylinder 101, a cross-shaped lifting plate assembly 102, and several spiral guide plates 103, several curved lifting plates 104, several straight lifting plates 105, and several discharge inclined lifting plates 106 arranged sequentially along the conveying direction of the carbon black. The cylinder 101 defines a drying reaction zone for containing and drying the carbon black. One end of the cylinder 101 has a flue gas inlet for high-temperature flue gas to enter the drying reaction zone, and the other end of the cylinder 101 has a carbon black inlet for carbon black to enter the drying reaction zone. The carbon black and high-temperature flue gas... Gas is conveyed in opposite directions within the drying reaction zone; the cross-shaped lifting plate assembly 102 is sleeved inside the cylinder 101 along the central axis of the cylinder 101, and its two ends are fixedly connected to the cylinder 101 by fasteners; the spiral guide plate 103, the curved lifting plate 104, the straight lifting plate 105, and the discharge inclined lifting plate 106 are fixedly connected to the inner wall of the cylinder 101, and the included angles between the spiral guide plate 103, the curved lifting plate 104, the straight lifting plate 105, and the discharge inclined lifting plate 106 and the inner wall of the cylinder 101 increase sequentially. In this countercurrent pyrolysis carbon black granulation and drying equipment, the countercurrent drying method in which carbon black and high-temperature flue gas are conveyed in opposite directions within the drying reaction zone improves energy utilization. By setting different types of lifting plates and guide plates at different positions in the cylinder 101, the drying effect and carbon black quality are guaranteed. In some embodiments, the spiral guide plate 103 forms a 30° angle with the inner wall of the cylinder 101; the curved lifting plate 104 forms a 45° angle with the inner wall of the cylinder 101; the straight lifting plate 105 forms a 125° angle with the inner wall of the cylinder 101; and the discharge inclined lifting plate 106 forms a 185° angle with the inner wall of the cylinder 101. Further, the spiral guide plate 103 is installed 1-5m from the inner wall of the inlet end of the cylinder 101; and the discharge inclined lifting plate 106 is installed 1-2m from the inner wall of the outlet end of the cylinder 101.

[0025] Specifically, four different lifting plates are arranged from right to left inside the cylinder 101, including: a feeding spiral guide plate 103, a curved plate lifting plate 104, a straight plate lifting plate 105, and a discharge inclined lifting plate 106. The feeding spiral guide plate 103 is installed at a 30° angle to the inner wall of the cylinder 101. When the cylinder 101 rotates, these small strips act like propellers, carrying hot air and thus allowing the material to be heated more effectively. This is generally suitable for materials with high moisture content. Its function is to feed the incoming material into the cylinder 101 in a rotary cutting manner. Installing the spiral guide plate 103 at the feeding end (1-5m) also effectively prevents wet material from sticking and accumulating on the cylinder wall. The curved plate lifting plate 104 is installed at a 45° angle to the inner wall of the cylinder 101. The curved plate lifting plate 104 is a lifting plate bent into an arc shape, causing the material to be continuously turned over during the drying process, increasing the contact area with the hot gas and improving the heat transfer effect. The straight-plate lifting plate 105 is installed at a 125° angle to the inner wall of the cylinder 101, which helps the material to be evenly distributed in the dryer, increases the contact opportunity with the hot air flow, thereby improving the dehydration speed and the drying effect. It can better turn over and cover the material to every corner. Because the dried material is easily lifted and carried away by the exhaust gas, no lifting plate is installed 1-2m from the discharge end. Instead, a discharge inclined lifting plate 106 is set at a 185° angle to the inner wall of the cylinder 101.

[0026] like Figure 3 As shown, the cross-shaped lifting plate assembly 102 includes a mounting shaft 1021 and a plurality of central lifting plates 1022 evenly distributed circumferentially along the mounting shaft 1021. In some embodiments, the central lifting plates 1022 are straight plates, and the curved lifting plates 104 are curved arcs. Figure 4 As shown, the fixing component includes a support 1023, one end of which is fixedly connected to the mounting shaft 1021, and the other end of which is fixedly connected to the inner wall of the cylinder 101. A cross-shaped lifting plate assembly is also provided in the center of the cylinder 101. Three supports 1023 are provided at each of the left and right ends of the cross-shaped lifting plate assembly, which are fixed to the inner wall of the cylinder 101. When the cylinder 101 rotates, the material is turned over and continuously comes into contact with the hot gas. At the same time, due to the reduction in the material's falling height, the possibility of the dry material of the river carbon black dust being carried away by the gas is reduced.

[0027] Furthermore, the drying device also includes a drive component that rotates the cylinder 101. Regarding the aforementioned counter-current pyrolysis carbon black granulation and drying equipment, it should be noted that the hot air furnace provides the heat source for the drying device. A heating burner is installed on the left end plate of the hot air furnace, and a high-temperature flue gas outlet is located in the middle of the right end plate, connecting to the high-temperature flue gas inlet of the front kiln head. The high-temperature flue gas inlet of the front kiln head is radially located in the middle of the left side of the front kiln head, and the discharge port is located at the lower part of the kiln body, connected to the discharge valve below the discharge port. The finished carbon black discharged from the lower discharge valve is discharged into the finished carbon black collection silo via the bucket elevator inlet for buffering. The inlet of the finished carbon black collection silo is vertically located on the upper left side of the silo. An upper level gauge is installed on the upper right side of the silo body, and a lower level gauge is installed at the lower part of the cone-shaped body on the left side of the silo body. The upper and lower level gauges are interlocked with the bucket elevator to control the material level in the silo. The discharge port of the finished carbon black collection hopper is located at the lower part of the cone and is connected to the feed end of the maintenance control gate valve. Its discharge end is connected to the discharge valve of the finished carbon black collection outlet. The left side of the front kiln head is dynamically and statically fitted with the discharge end of cylinder 101, and the dynamic and static fit is sealed with a fish-scale sealing device. A tire is installed on the left side of cylinder 101, which fits with the left support roller. A tire is installed on the right side of the drying unit furnace body, which fits with the right support roller. The main function of the support roller is to support the 1023 granulation and drying unit and make it move smoothly during operation. The right side of the rear kiln head is dynamically and statically fitted with the discharge end of cylinder 101, and the dynamic and static fit is sealed with a fish-scale sealing device. A passive gear ring is installed on the left side of the drying unit furnace body, which fits with the drive gear on the drive reducer, driving the drying unit to run clockwise. The granulated finished wet carbon black granules enter from the right kiln tail and move clockwise along the internal combined lifting plate assembly to the left kiln head discharge end. The high-temperature flue gas fed into the hot blast furnace enters from the kiln head on the left in reverse. The core principle is to use the high-temperature flue gas to perform strong shearing, blowing, and rotating actions on the carbon black in reverse, so as to micronize the carbon black particles and enhance the mass and heat transfer process.

[0028] In some embodiments, the counter-current pyrolysis carbon black granulation and drying equipment further includes a granulation device 2 connected to the drying device, and a grinding device 3 connected to the granulation device 2. In some embodiments, the grinding device 3 is connected to the granulation device 2 via a cyclone dust collector 4. A discharge chute is provided at the feed end of the drying device furnace body, connected to the discharge port of the granulator, to guide the material into the drying device for drying. The coarse carbon black transported from the pyrolysis workshop enters the raw material silo for buffering. The feed inlet is located on the upper left side of the silo body, and the negative pressure air outlet is located on the upper right side of the silo body, connected to the air inlet of the negative pressure connection pipe, and the air outlet is connected to the air inlet of the negative pressure fan. A discharge valve is provided at the bottom of the raw material silo, connected to the feed inlet of the inclined powder screw conveyor, and its discharge outlet is connected to the feed inlet of the raw material grinder. The discharge outlet of the raw material grinder is connected to the powder conveying pipe, and the outlet of the powder conveying pipe is connected to the feed inlet of the powder cyclone dust collector 4. The powder discharged from the discharge valve of the powder cyclone dust collector 4 is conveyed by a screw conveyor to the lower part of the powder silo, and then discharged into the discharge port of the powder bucket elevator to be transported to the upper buffer silo of the granulator for storage and later use. After grinding, the powder that meets the particle size requirements enters the powder silo for storage. A screw conveyor is located at the bottom of the powder silo, with its discharge port located on the lower left side of the screw cylinder 101, converging with the lower screw conveyor of the powder cyclone dust collector 4 for external discharge. A dust collector bag is installed at the top of the powder silo, and a collection silo is located at the bottom. A negative pressure fan is used to draw negative pressure from the powder silo. The powder bucket elevator discharges the powder into the upper buffer silo of the granulator. A discharge valve is located at the bottom of the discharge port of the buffer silo, discharging the powder into the feed port of the screw conveyor. The screw conveyor discharge port is connected to the feed port of the granulator. The granulator discharge port is connected to the discharge chute installed at the right kiln tail to send the material into the feed port of the drying device. A flue gas output pipe (46) is provided at the right kiln tail and is connected to the inlet of the flue gas cyclone dust collector 4.

[0029] Furthermore, the counter-current pyrolysis carbon black granulation and drying equipment also includes a flue gas treatment device connected to the flue gas outlet of the drying unit. The flue gas treatment device further includes a flue gas dust collector 501 and a Roots blower 502 connected to the flue gas dust collector 501. A connecting pipe is provided at the top of the flue gas dust collector 501, connecting to its inlet. The discharge port of the flue gas dust collector 501 is connected at the bottom to the inlet of the recovery powder screw conveyor, and its discharge port is located on the left side of the screw conveyor cylinder 101, with the discharged recovery material sent to the next processing step. The outlet of the flue gas dust collector 501 is located on the upper left side of the casing, connected to a suction negative pressure pipe, utilizing the suction negative pressure provided by the Roots blower 502, and the exhaust pipe at the outlet of the Roots blower 502.

[0030] The working process of the above-mentioned counter-current pyrolysis carbon black granulation and drying equipment is as follows:

[0031] Carbon black enters the drying reaction zone from the carbon black inlet at the right end of the cylinder 101, and is conveyed to the left in sequence by the spiral guide plate 103, the curved lifting plate 104, the straight lifting plate 105, the discharge inclined lifting plate 106, and the cross lifting plate assembly 102. At the same time, high-temperature flue gas enters the drying reaction zone from the high-temperature flue gas inlet at the left end of the cylinder 101 and comes into countercurrent contact with the carbon black to dry it.

[0032] The advantages of the aforementioned counter-current pyrolysis carbon black granulation and drying equipment mainly include: counter-current drying involves placing the granulator at the tail of the drying furnace, allowing hot air to flow counter-currently and directly contact the wet material, evaporating the moisture from the material and achieving the drying process. Specifically:

[0033] The high efficiency of the counter-current pyrolysis granulation carbon black drying furnace is reflected in its comprehensive circulating drying structure, which enables multi-level circulating drying treatment, significantly improving the drying effect of carbon black particles and increasing thermal efficiency. Furthermore, the equipment features a stable conveying structure, which reduces impact damage during carbon black particle transport and improves particle size.

[0034] In terms of energy saving, the counter-current method can effectively reduce energy consumption, and the use of advanced heating devices and insulation materials can further improve energy utilization and save energy.

[0035] The product is of high quality. The various types of lifting plates are designed to adapt to the characteristics of thermally cracked carbon black and improve drying efficiency. The design and number of lifting plates directly affect the drying effect and capacity of the dryer, thereby ensuring the quality and stability of the dried product.

[0036] High adaptability is also an important feature of the above-mentioned equipment. This equipment is suitable for processing materials with various moisture contents, including granular, viscous paste, and high moisture content materials, and is widely used in metallurgy, building materials, light industry and other industries.

[0037] 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.

[0038] 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 counter-current pyrolysis carbon black granulation and drying equipment, characterized in that, Includes a drying device, the drying device comprising: A cylindrical body defines a drying reaction zone for containing and drying carbon black. One end of the cylindrical body is provided with a flue gas inlet for high-temperature flue gas to enter the drying reaction zone, and the other end of the cylindrical body is provided with a carbon black inlet for carbon black to enter the drying reaction zone. The carbon black and the high-temperature flue gas are conveyed in opposite directions within the drying reaction zone. A cross-shaped lifting plate assembly is sleeved inside the cylinder along the central axis of the cylinder, and its two ends are fixedly connected to the cylinder by fasteners. The cylinder contains a plurality of spiral guide plates, a plurality of curved lifting plates, a plurality of straight lifting plates, and a plurality of discharge inclined lifting plates arranged sequentially along the conveying direction of the carbon black. The spiral guide plates, the curved lifting plates, the straight lifting plates, and the discharge inclined lifting plates are fixedly connected to the inner wall of the cylinder, and the included angles between the spiral guide plates, the curved lifting plates, the straight lifting plates, and the discharge inclined lifting plates and the inner wall of the cylinder increase sequentially.

2. The counter-current pyrolysis carbon black granulation and drying equipment according to claim 1, characterized in that, The cross-shaped lifting plate assembly includes a mounting shaft and a plurality of central lifting plates evenly distributed circumferentially along the mounting shaft.

3. The counter-current pyrolysis carbon black granulation and drying equipment according to claim 1, characterized in that, The spiral guide plate is at a 30° angle to the inner wall of the cylinder; the curved lifting plate is at a 45° angle to the inner wall of the cylinder; the straight lifting plate is at a 125° angle to the inner wall of the cylinder; and the discharge inclined lifting plate is at a 185° angle to the inner wall of the cylinder.

4. The counter-current pyrolysis carbon black granulation and drying equipment according to claim 2, characterized in that, The central lifting plate is straight, while the curved lifting plate is curved.

5. The counter-current pyrolysis carbon black granulation and drying equipment according to claim 3, characterized in that, The spiral guide plate is installed 1-5m inside the feed end of the cylinder; the discharge inclined plate is installed 1-2m inside the discharge end of the cylinder.

6. The counter-current pyrolysis carbon black granulation and drying equipment according to claim 2, characterized in that, The fastener includes a support with one end fixedly connected to the mounting shaft and the other end fixedly connected to the inner wall of the cylinder.

7. The countercurrent pyrolysis carbon black granulation and drying equipment according to claim 1, characterized in that, The drying device also includes a drive component that rotates the cylinder.

8. The counter-current pyrolysis carbon black granulation and drying equipment according to claim 1, characterized in that, The counter-current pyrolysis carbon black granulation and drying equipment also includes a granulation device connected to the drying device, and a grinding device connected to the granulation device.

9. The counter-current pyrolysis carbon black granulation and drying equipment according to claim 8, characterized in that, The grinding device is connected to the granulation device via a cyclone dust collector.

10. The countercurrent pyrolysis carbon black granulation and drying equipment according to claim 1, characterized in that, The counter-current pyrolysis carbon black granulation and drying equipment also includes a flue gas treatment device connected to the flue gas outlet of the drying device. The flue gas treatment device further includes a flue gas dust collector and a Roots blower connected to the flue gas dust collector.

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