Cracking furnace carbon black and cracking tail gas cooling treatment device

Abstract

The application discloses a pyrolysis furnace carbon black and pyrolysis tail gas cooling treatment device, the pyrolysis furnace includes the cracking chamber, condensing tower and discharge pipe, organic solid waste is cracked in the cracking chamber and generates carbon black and pyrolysis gas, pyrolysis gas is condensed in the condensing tower and generates pyrolysis oil, carbon black is discharged to the outside in the discharge pipe, the cooling treatment device includes the collection box, screw conveyor and cooling device, the collection box is installed to the outlet of the discharge pipe, the first filter plate is arranged in the collection box, and the first filter plate divides the collection box into the transfer area and the oil collection area. The screw conveyor is inclined and connected to the transfer area of the collection box, the screw conveyor includes the heat-conducting conveying pipe and the spiral conveying blade, and the heat-conducting conveying pipe is provided with a vertical downward discharge port. The cooling device is wrapped to the outer wall of the heat-conducting conveying pipe to cool the carbon black and pyrolysis gas in the screw conveyor, realize the recycling treatment of the pyrolysis gas, and facilitate the collection of the carbon black.

Description

Technical Field

[0001] This invention belongs to the field of pyrolysis furnace tail gas treatment technology, specifically relating to a pyrolysis furnace carbon black and pyrolysis tail gas cooling treatment device. Background Technology

[0002] Organic solid waste refers to solid and semi-solid waste containing organic matter generated during industrial and agricultural production processes, such as oily sludge from the petrochemical industry, biomass from agriculture and forestry, and domestic waste generated in cities. The amount of such waste is enormous and causes serious pollution.

[0003] Current organic solid waste treatment technologies often employ pyrolysis furnaces to perform pyrolysis heat treatment on solid waste. For example, waste tires are decomposed into fuel oil (pyrolysis oil), carbon black, waste steel wire, and pyrolysis gas. The condensation of pyrolysis gas produces fuel oil, and the carbon black produced from pyrolysis is difficult to collect due to its high temperature. Furthermore, some pyrolysis tail gas is emitted from the carbon black discharge point, which can easily impact the environment and results in low efficiency of the pyrolysis furnace in treating pyrolysis gas and low yield of pyrolysis oil. Summary of the Invention

[0004] To address the aforementioned shortcomings, this invention provides a cooling and treatment device for carbon black and pyrolysis tail gas from a pyrolysis furnace. Installed at the tail end of the discharge pipe, it cools the carbon black about to be discharged, facilitating its collection. Simultaneously, it cools, recovers, and reprocesses the residual pyrolysis gas discharged from the discharge pipe, preventing environmental pollution from the pyrolysis gas, improving the treatment efficiency of the pyrolysis gas, and increasing the yield of pyrolysis oil.

[0005] This invention is achieved through the following technical solution:

[0006] A cooling treatment device for carbon black and pyrolysis tail gas from a pyrolysis furnace is disclosed. The pyrolysis furnace includes a pyrolysis chamber, a condenser tower, and a discharge pipe. Organic solid waste is pyrolyzed in the pyrolysis chamber to produce carbon black and pyrolysis gas. The pyrolysis gas is condensed in the condenser tower to generate pyrolysis oil. The carbon black is discharged to the outside through the discharge pipe. The cooling treatment device includes a collection box, a screw conveyor, and a cooling unit. The collection box is installed at the outlet of the discharge pipe and has a first filter plate inside, which divides the collection box into a transfer zone and an oil collection zone. The screw conveyor is inclined and connected to the transfer zone of the collection box. The screw conveyor includes a heat-conducting conveying pipe and screw conveying blades. A vertically downward discharge port is opened above the heat-conducting conveying pipe. The cooling unit is wrapped around the outer wall of the heat-conducting conveying pipe to cool the carbon black and pyrolysis gas inside the screw conveyor, thereby achieving the recovery and treatment of the pyrolysis gas and facilitating the collection of carbon black.

[0007] Furthermore, the spiral conveyor blades are provided with several oil guide holes. These holes facilitate the flow of pyrolysis oil generated by the condensation of pyrolysis gas in the heat transfer pipe into the collection box, thus enabling the collection of the pyrolysis oil. The extension direction of each oil guide hole is consistent with the extension direction of the heat transfer pipe, so as to facilitate the flow of cold air generated by the cooling device within the heat transfer pipe and improve the condensation effect on the pyrolysis gas.

[0008] Furthermore, an arc-shaped oil guide groove is formed on the inner wall of the heat transfer pipe. The extension direction of the arc-shaped oil guide groove is consistent with the extension direction of the heat transfer pipe, and the arc-shaped oil guide groove is located below the heat transfer pipe and connects to the transfer area. The cracked oil generated by the condensation of the cracked gas in the heat transfer pipe falls into the arc-shaped oil guide groove and slides down along the extension direction of the arc-shaped oil guide groove into the collection box. The design of the arc-shaped oil guide groove can ensure the structural strength of the heat transfer pipe and reduce the impact of opening the arc-shaped oil guide groove in the pipe wall on the structural strength of the heat transfer pipe.

[0009] Furthermore, an elastic heat-conducting cylinder is provided between the cooling device and the heat-conducting pipe. The elastic heat-conducting cylinder is used for heat transfer between the cooling device and the heat-conducting pipe, and can also play an elastic support role, improving the stability between the cooling device and the heat-conducting pipe.

[0010] Furthermore, the cooling device includes a spiral water delivery pipe fitted onto the outer wall of the elastic heat-conducting cylinder, a housing, and a cold water pump. The housing includes an outer shell and an inner shell. The outer shell is fixed to the outside of the spiral water delivery pipe, and the inner wall of the outer shell has a heat insulation layer. The inner shell is fixed to the inside of the spiral water delivery pipe and connected to the elastic heat-conducting cylinder. The inner shell is made of a heat-conducting material. The cold water pump can supply flowing cold water to the spiral water delivery pipe, and the flowing cold water flows downward along the spiral water delivery pipe from above, thereby cooling the pyrolysis gas in the heat-conducting delivery pipe. The water cooling method saves energy and reduces cooling costs.

[0011] Furthermore, a cooler is installed on top of the screw conveyor, with its exhaust port angled downwards towards the heat transfer pipe. The cooler blows cool air into the heat transfer pipe. The cool air mixes with the pyrolysis gas, accelerating the cooling of the pyrolysis gas, facilitating the release of pyrolysis oil, reducing pyrolysis gas leakage, and improving the processing efficiency of the pyrolysis gas and the recovery rate of the pyrolysis oil.

[0012] Furthermore, the first filter plate has several first filter holes, and a horizontally arranged second filter plate is installed in the oil collection area. The second filter plate has several second filter holes, the diameter of which is smaller than that of the first filter holes. The second filter plate filters the cracked oil, removing fine carbon black particles and facilitating subsequent processing of the cracked oil.

[0013] Furthermore, the cooling device also includes a control unit, and temperature sensors are installed in the transfer area. Both the cooling device and the temperature sensors are connected to the control unit via signal transmission. The control unit adjusts the cooling level of the cooling device based on the temperature data of the carbon black collected in the collection box, ensuring high condensation efficiency of the pyrolysis gas at a reasonable cooling cost, thereby facilitating the extraction of more pyrolysis oil from the pyrolysis gas.

[0014] Furthermore, the side wall of the collection box is equipped with an observation window, which provides real-time feedback on the volume of the transfer area and the oil collection area. The screw conveyor also includes a drive motor that rotates the screw conveyor blades. By observing the carbon black content in the transfer area within the collection box through the observation window, the output power of the drive motor can be adjusted to ensure that the efficiency of the screw conveyor in outputting carbon black is equal to the efficiency of the discharge pipe in discharging carbon black into the transfer area. This ensures that the carbon black content in the transfer area remains within a reasonable range.

[0015] Furthermore, the cooling device also includes a moving mechanism, which comprises a moving support and moving wheels. The moving support is inclined and fixed to the screw conveyor, and is perpendicular to the heat transfer pipe. The central axis of the moving wheels is in the same plane as the heat transfer pipe. This moving mechanism facilitates the movement of the cooling device, allowing a single cooling device to be used alternately in multiple cracking furnaces.

[0016] The beneficial effects of this invention are:

[0017] 1. By setting an upward-sloping screw conveyor at the end of the discharge pipe, the screw conveyor lifts the carbon black to a certain height, making it easier to collect the carbon black;

[0018] 2. By installing a cooling device on the outside of the screw conveyor, the temperature of the carbon black inside the screw conveyor is reduced, making it easier to collect the carbon black;

[0019] 3. A collection box is installed at the discharge port, and a cooling device is installed on the outside of the screw conveyor. This allows the cracked gas inside the screw conveyor to condense and generate cracked oil. The cracked oil then flows back to the collection box along the screw conveyor, preventing the cracked gas from being directly discharged into the outside environment and polluting it. This improves the treatment efficiency of the cracked gas and increases the yield of cracked oil. Attached Figure Description

[0020] Figure 1 A schematic diagram illustrating one embodiment of a pyrolysis furnace carbon black and pyrolysis tail gas cooling treatment device in this invention;

[0021] Figure 2 This is a schematic structural diagram illustrating one embodiment of a pyrolysis furnace carbon black and pyrolysis tail gas cooling treatment device according to the present invention.

[0022] Figure 3 A cross-sectional view illustrating a schematic embodiment of a pyrolysis furnace carbon black and pyrolysis tail gas cooling treatment device in this invention.

[0023] Figure 4 Used to explain Figure 3 Enlarged view of a portion of point A in the middle;

[0024] Figure 5 A cross-sectional view illustrating another schematic embodiment of a pyrolysis furnace carbon black and pyrolysis tail gas cooling treatment device in this invention.

[0025] Figure 6 Used to explain Figure 5 Enlarged view of a portion of point B in the middle;

[0026] Figure 7 This is a schematic diagram illustrating a structural embodiment of a spiral water conveying pipe for a pyrolysis furnace carbon black and pyrolysis tail gas cooling treatment device in this invention.

[0027] Figure 8 This is a schematic structural diagram illustrating an embodiment of the spiral conveyor blades of a pyrolysis furnace carbon black and pyrolysis tail gas cooling treatment device of the present invention.

[0028] List of components and reference numerals:

[0029] 1. Cracking chamber; 2. Condensation tower; 3. Discharge pipe; 31. Carbon black; 4. Cooling treatment device; 5. Collection box; 51. First filter plate; 511. First filter hole; 52. Transfer area; 53. Oil collection area; 54. Second filter plate; 541. Second filter hole; 6. Screw conveyor; 61. Heat-conducting conveying pipe; 611. Arc-shaped oil guide groove; 62. Screw conveying blade; 621. Oil guide hole; 63. Discharge port; 64. Elastic heat-conducting cylinder; 7. Cooling device; 71. Screw water conveying pipe; 72. Shell; 721. Outer shell; 722. Inner shell; 8. Air cooler; 9. Moving mechanism; 91. Moving support; 92. Moving wheels. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] It should be noted that the directional terms such as left, right, up, down, front, and back in the embodiments of the present invention are only relative concepts or are based on the normal use state of the product, i.e., the direction of the product's movement, and should not be considered as limiting.

[0032] In addition, it should be noted that the dynamic terms such as "relative motion" mentioned in the embodiments of the present invention refer not only to changes in position, but also to movements such as rotation and rolling in which the position does not change relative to the position, but the state changes.

[0033] Finally, it should be noted that when a component is said to be "located on" or "set on" another component, it can be on the other component or may have an intervening component at the same time. When a component is said to be "connected to" another component, it can be directly connected to the other component or may have an intervening component at the same time.

[0034] like Figures 1 to 8 The diagram illustrates a pyrolysis furnace containing carbon black 31 and a pyrolysis tail gas cooling treatment device 4. The pyrolysis furnace includes a pyrolysis chamber 1, a condensation tower 2, and a discharge pipe 3. Organic solid waste is pyrolyzed in the pyrolysis chamber 1 to produce carbon black 31 and pyrolysis gas. The pyrolysis gas is condensed in the condensation tower 2 to generate pyrolysis oil. The carbon black 31 is discharged to the outside through the discharge pipe 3. The cooling treatment device 4 includes a collection box 5, a screw conveyor 6, and a cooling device 7. The collection box 5 is installed at the outlet of the discharge pipe 3. A first filter plate 51 is provided inside the collection box 5, dividing the collection box 5 into a transfer area 52 and an oil collection area 53. The screw conveyor 6 is inclined and connected to the transfer area 52 of the collection box 5. The screw conveyor 6 includes a heat-conducting conveying pipe 61 and screw conveying blades 62. A vertically downward discharge port 63 is provided above the heat-conducting conveying pipe 61. The cooling device 7 is wrapped around the outer wall of the heat-conducting conveying pipe 61 to cool down the carbon black 31 and pyrolysis gas in the screw conveyor 6, so as to realize the recovery and treatment of pyrolysis gas and facilitate the collection of carbon black 31.

[0035] In one embodiment, organic solid waste, such as discarded tires, is first introduced into the pyrolysis chamber 1. Then, the organic solid waste is pyrolyzed in the pyrolysis chamber 1 to produce carbon black 31 and pyrolysis gas. The carbon black 31 is discharged through the discharge pipe 3 at the tail end of the pyrolysis chamber 1, and most of the pyrolysis gas enters the condenser tower 2, where it is cooled to generate pyrolysis oil. Since a large amount of pyrolysis gas is simultaneously emitted when the carbon black 31 is discharged through the discharge pipe 3, both the high-temperature carbon black 31 and the pyrolysis gas can pollute the environment. Therefore, a cooling treatment device 4 is installed at the tail end of the discharge pipe 3.

[0036] Carbon black 31 and some of the pyrolysis gas fall along the discharge pipe 3 into the transfer zone 52 inside the collection box 5. Since the collection box 5 is located outside the pyrolysis chamber 1, the temperature of the collection box 5 is basically the same as the outside temperature. At this time, the pyrolysis gas in the transfer zone 52 of the collection box 5 will cool and precipitate a small amount of pyrolysis oil. The pyrolysis oil passes through the first filter plate 51 and flows into the oil collection zone 53 for collection. The screw conveyor 6 is connected to the transfer zone 52 of the collection box 5. After a short period of accumulation in the transfer zone 52, carbon black 31 moves upward along the heat-conducting conveying pipe 61 under the drive of the screw conveyor blades 62 until the carbon black 31 is discharged to the outside through the discharge port 63 above the heat-conducting conveying pipe 61. As carbon black 31 and pyrolysis gas move upward along the heat-conducting conveying pipe 61, the cooling device 7 cools the heat-conducting conveying pipe 61 of the screw conveyor 6. This causes the pyrolysis gas in the heat-conducting conveying pipe 61 to cool rapidly and generate pyrolysis oil. The liquid pyrolysis oil flows downward along the heat-conducting conveying pipe 61 to the transfer zone 52, and then flows through the first filter plate 51 into the oil collection zone 53 for collection. This achieves cooling treatment of the pyrolysis gas, increasing the yield of pyrolysis oil. At the same time, it also cools the carbon black 31, facilitating the collection of carbon black 31 discharged to the outside.

[0037] It should be noted that the thermal conductivity of the pipe wall of a normal screw conveyor 6 is generally low. Replacing the ordinary conveying pipe with a heat-conducting conveying pipe 61 facilitates heat exchange between the cooling device 7 and the heat-conducting conveying pipe 61, thereby improving the cooling effect on the cracked gas.

[0038] Preferably, the spiral conveyor blades 62 are provided with a plurality of oil guide holes 621. The oil guide holes 621 facilitate the flow of the cracked oil generated by the condensation of cracked gas in the heat transfer pipe 61 into the collection box 5, thereby facilitating the collection of the cracked oil. The extension direction of each oil guide hole 621 is consistent with the extension direction of the heat transfer pipe 61, so as to facilitate the flow of cold air generated by the cooling device 7 in the heat transfer pipe 61, thereby improving the condensation effect of the cracked gas.

[0039] In one embodiment, when the pyrolysis gas is cooled to generate pyrolysis oil, the pyrolysis oil tends to adhere to the spiral conveyor blades 62. Oil guide holes 621 are provided on the spiral conveyor blades 62 to facilitate the flow of the pyrolysis oil through the oil guide holes 621 into the collection box 5. As the pyrolysis oil flows along the oil guide holes 621, it tends to aggregate. After aggregating, the pyrolysis oil, influenced by gravity, tends to flow downwards at an angle along the gap between the bolt conveyor blades and the heat-conducting conveying pipe 61 into the collection box 5. It should be noted that the diameter of the oil guide holes 621 is smaller than the particle size of most carbon black 31, meaning that very little carbon black 31 powder flows downwards at an angle along the oil guide holes 621. Therefore, the presence of oil guide holes 621 has almost no impact on the conveying efficiency of the carbon black 31.

[0040] Secondly, the oil guide hole 621 on the spiral conveying blade 62 helps with heat transfer inside the heat transfer pipe 61 and maintains the temperature stability inside the heat transfer pipe 61.

[0041] Preferably, the inner wall of the heat transfer pipe 61 is provided with an arc-shaped oil guide groove 611. The extension direction of the arc-shaped oil guide groove 611 is consistent with the extension direction of the heat transfer pipe 61, and the arc-shaped oil guide groove 611 is located below the heat transfer pipe 61 and connects to the transfer area 52. The cracked oil generated by the condensation of the cracked gas in the heat transfer pipe 61 falls into the arc-shaped oil guide groove 611 and slides down along the extension direction of the arc-shaped oil guide groove 611 into the collection box 5. The design of the arc-shaped oil guide groove 611 can ensure the structural strength of the heat transfer pipe 61 and reduce the impact of opening the arc-shaped oil guide groove 611 in the pipe wall of the heat transfer pipe 61 on the structural strength of the heat transfer pipe 61.

[0042] In one embodiment, due to the continuous rotation of the spiral conveying blades 62, the pyrolysis oil generated in the heat-conducting conveying pipe 61 flows along the gap between the spiral conveying blades 62 and the heat-conducting conveying pipe 61. This flow is easily affected by the resistance of the spiral conveying blades 62, causing some of the pyrolysis oil to adhere to the carbon black 31 and be discharged to the outside along with the carbon black 31. To reduce the waste of pyrolysis oil and improve the collection efficiency, an arc-shaped oil guide groove 611 is formed on the inner wall of the heat-conducting conveying pipe 61. After the pyrolysis gas condenses to generate pyrolysis oil, the pyrolysis oil flows under gravity into the arc-shaped oil guide groove 611 on the lower side wall of the heat-conducting conveying pipe 61, and flows along the extension direction of the arc-shaped oil guide groove 611 into the collection box 5. The extension direction of the arc-shaped oil guide groove 611 is consistent with the extension direction of the heat-conducting conveying pipe 61, ensuring that the pyrolysis oil in the arc-shaped oil guide groove 611 flows directly towards the collection box 5 along the arc-shaped oil guide groove 611.

[0043] It should be noted that the arc-shaped oil guide groove 611 inside the heat transfer pipe 61 can reduce the impact of the arc-shaped oil guide groove 611 on the structure of the heat transfer pipe 61, ensure that the heat transfer pipe 61 has sufficient structural strength, and prevent stress concentration in the heat transfer pipe 61. Secondly, the small gap between the arc-shaped oil guide groove 611 and the spiral conveying blade 62 can reduce the degree of backflow of carbon black 31 along the gap between the arc-shaped oil guide groove 611 and the spiral conveying blade 62.

[0044] Preferably, an elastic heat-conducting cylinder 64 is provided between the cooling device 7 and the heat-conducting pipe 61. The elastic heat-conducting cylinder 64 is used for heat transfer between the cooling device 7 and the heat-conducting pipe 61, and can also play an elastic support role, improving the stability between the cooling device 7 and the heat-conducting pipe 61.

[0045] In one embodiment, heat transfer between the cooling device 7 and the heat-conducting pipe 61 can easily lead to unstable connection between them. The convergence of hot and cold flows can reduce the connection stability between the cooling device 7 and the heat-conducting pipe 61. Providing an elastic heat-conducting cylinder 64 between the cooling device 7 and the heat-conducting pipe 61 increases the connection stability while ensuring good thermal conductivity between them.

[0046] Preferably, the cooling device 7 includes a spiral water pipe 71 sleeved to the outer wall of the elastic heat-conducting cylinder 64, a housing 72, and a cold water pump. The housing 72 includes an outer shell 721 and an inner shell 722. The outer shell 721 is fixed to the outside of the spiral water pipe 71, and the inner wall of the outer shell 721 has a heat insulation layer. The inner shell 722 is fixed to the inside of the spiral water pipe 71 and connected to the elastic heat-conducting cylinder 64. The inner shell 722 is made of a heat-conducting material. The cold water pump can supply flowing cold water to the spiral water pipe 71, and the flowing cold water flows downward along the spiral water pipe 71 from above, thereby cooling the cracked gas in the heat-conducting conveying pipe 61. The water cooling method saves energy and reduces cooling costs.

[0047] In one embodiment, the cooling device 7 employs water cooling. A cold water pump draws cold water and injects it into the spiral water delivery pipe 71, which then flows downwards to cool the heat-conducting conveying pipe 61 enclosed by the spiral water delivery pipe 71, thereby cooling the pyrolysis gas and reducing cooling costs. The outer shell 721 of the cooling device 7 is fixed to the outermost side of the spiral water delivery pipe 71, ensuring stable heat exchange between the cooling device 7 and the heat-conducting conveying pipe 61, reducing the absorption of external heat by the spiral water delivery pipe 71, and guaranteeing the heat absorption rate of the spiral water delivery pipe 71 on the heat-conducting conveying pipe 61. It should be noted that the heat absorbed by the spiral water delivery pipe 71 refers to the heat absorption of the cold water inside the spiral water delivery pipe 71. The inner shell 722 of the cooling device 7 also serves to fix the spiral water delivery pipe 71, and is made of a thermally conductive material to avoid hindering heat exchange between the spiral water delivery pipe 71 and the heat-conducting conveying pipe 61.

[0048] It should also be noted that the cold water pump is located above the spiral water delivery pipe 71, and the cold water flows from top to bottom along the spiral water delivery pipe 71. The pyrolysis gas moves from bottom to top along the heat transfer pipe 61, which slows down the instantaneous conversion efficiency of heat in the pyrolysis gas and heat in the cold water flow, that is, reduces the degree of instantaneous heat exchange between the two, prevents the high-temperature pyrolysis gas from coming into instantaneous contact with the low-temperature cold water, and reduces the service life of the heat transfer pipe 61 and the spiral water delivery pipe 71.

[0049] Specifically, the high-temperature pyrolysis gas in the heat-conducting pipe 61 flows from bottom to top, gradually exchanging heat with the cold water flow in the spiral water pipe 71. That is, the temperature of the pyrolysis gas is higher at the bottom and lower at the top of the heat-conducting pipe 61. The cold water flow in the spiral water pipe 71 flows from top to bottom, gradually exchanging heat with the pyrolysis gas in the heat-conducting pipe 61. That is, the temperature of the cold water flow is lower at the top and higher at the bottom of the spiral water pipe 71.

[0050] In one embodiment, when treating organic solid waste, the factory often has a boiler to heat the water source to generate steam. After the cold water pump draws cold water through the spiral water conveying pipe 71, the cold water is heated and its temperature rises. The water flowing out of the spiral water conveying pipe 71 is then connected to the boiler, reducing the resources consumed by the boiler to heat the water source and lowering costs.

[0051] In one embodiment, the cooling device 7 adopts an electric cooling method, which is similar to that of a refrigerator. The evaporator absorbs the refrigerant and then sends the compressed refrigerant into the condenser. The condenser sends the liquefied refrigerant into the evaporator through a capillary tube for evaporation and heat absorption, thereby achieving the purpose of cooling the cracked gas.

[0052] Preferably, a cooler is installed on the top of the screw conveyor 6, with the exhaust port of the cooler tilted downwards towards the heat transfer pipe 61. The cooler can blow cool air into the heat transfer pipe 61. The cool air mixes with the cracked gas, accelerating the cooling of the cracked gas, facilitating the release of cracked oil from the cracked gas, reducing cracked gas leakage, and improving the processing efficiency of the cracked gas and the recovery rate of cracked oil.

[0053] In one embodiment, the air cooler 8 points towards the heat transfer pipe 61 and blows cold air into it, slowing down the diffusion rate of the pyrolysis gas to the outside. Simultaneously, the cold air mixes with the pyrolysis gas, cooling it and aiding in the formation of pyrolysis oil. It should be noted that the air cooler 8 outputs a low air velocity into the heat transfer pipe 61. While the cold air slows the pyrolysis gas's movement towards the discharge port 63, it does not prevent the pyrolysis gas from being discharged from the discharge port 63 to the outside.

[0054] Preferably, the first filter plate 51 has a plurality of first filter holes 511, and a horizontally arranged second filter plate 54 is installed in the oil collecting area 53. The second filter plate 54 has a plurality of second filter holes 541, the diameter of which is smaller than that of the first filter holes 511. The second filter plate 54 can filter the pyrolysis oil, removing fine carbon black 31 particles contained in the pyrolysis oil, which facilitates subsequent processing of the pyrolysis oil.

[0055] In one embodiment, carbon black 31 accumulated in the collection box 5 and transferred to the transfer zone 52 easily generates carbon black 31 powder during movement. This carbon black 31 powder easily passes through the first filter plate 51 and flows to the oil collection zone 53, causing some contamination to the pyrolysis oil. Therefore, a second filter plate 54 is added to the oil collection zone 53. After passing through the first filter plate 51, the carbon black 31 powder falls onto the second filter plate 54. Since the pore size of the second filter pore 541 is smaller than that of the first filter pore 511, the second filter plate 54 can prevent the carbon black 31 powder from flowing into the bottom of the oil collection zone 53 and contaminating the pyrolysis oil. Here, the second filter plate 54 serves to filter the carbon black 31 powder in the pyrolysis oil, improving the quality of the pyrolysis oil and facilitating subsequent processing.

[0056] Preferably, the cooling device 4 also includes a control device. A temperature sensor is installed in the transfer area 52, and both the cooling device 7 and the temperature sensor are connected to the control device. The control device adjusts the cooling level of the cooling device 7 based on the temperature data of the carbon black 31 collected in the collection box 5, so as to ensure that the pyrolysis gas has a high condensation efficiency under reasonable cooling cost, so as to pyrolyze the pyrolysis gas into more pyrolysis oil.

[0057] In one embodiment, the temperature sensor transmits temperature data within the transfer zone 52 to the control device in real time. Based on previous experimental data, the control device adjusts the cooling performance of the cooling device 7 to reduce the energy consumption of the cooling device 7 while ensuring good cooling efficiency for the pyrolysis gas, thereby saving costs.

[0058] Preferably, the side wall of the collection box 5 is provided with an observation window, which can provide real-time feedback on the volume of the transfer zone 52 and the oil collection zone 53. The screw conveyor 6 also includes a drive motor that drives the screw conveyor blades 62 to rotate. By observing the carbon black 31 content in the transfer zone 52 within the collection box 5 through the observation window, the output power of the drive motor is adjusted so that the efficiency of the screw conveyor 6 in outputting carbon black 31 is equal to the efficiency of the discharge pipe 3 in discharging carbon black 31 into the transfer zone 52. This ensures that the carbon black 31 content in the transfer zone 52 is within a reasonable range.

[0059] In one embodiment, the operator can observe the amount of carbon black 31 accumulated in the transfer zone 52 through the observation window, adjust the output power of the drive motor of the screw conveyor 6, and thus adjust the conveying efficiency of the screw conveyor 6 for the carbon black 31. This ensures that the amount of carbon black 31 accumulated in the transfer zone 52 is always within a suitable range, preventing excessive accumulation of carbon black 31 from clogging the discharge pipe 3.

[0060] Preferably, the cooling treatment device 4 further includes a moving mechanism 9, which includes a moving support 91 and moving wheels 92. The moving support 91 is inclined and fixed to the screw conveyor 6, and the moving support 91 is perpendicular to the heat transfer pipe 61. The central axis of the moving wheels 92 is in the same plane as the heat transfer pipe 61. The moving mechanism 9 is provided to facilitate the movement of the cooling treatment device 4, so that a single cooling treatment device 4 can be used alternately in multiple cracking furnaces.

[0061] In one embodiment, the movable support 91 is inclined to support the inclined heat-conducting conveying pipe 61. The moving direction of the movable wheel 92 is perpendicular to the extension direction of the screw conveyor 6 to ensure the stability of the movable mechanism 9 when supporting the screw conveyor 6. It should be noted that the bottom of the collection box 5 is also equipped with movable wheels 92 for moving the collection box 5, which are not shown in the attached drawings. In use, the cooling treatment device 4 is moved to the discharge port 63 of the corresponding pyrolysis furnace, and the discharge port 63 is connected to the collection box 5 with bolts to treat the carbon black 31 and pyrolysis gas generated by the pyrolysis furnace.

[0062] When the above-mentioned pyrolysis furnace carbon black 31 and pyrolysis tail gas cooling treatment device 4 are used, an inclined upward screw conveyor 6 is set at the tail of the discharge pipe 3. The screw conveyor 6 lifts the carbon black 31 to a certain height, which facilitates the collection of the carbon black 31. A cooling device 7 is installed on the outside of the screw conveyor 6 to reduce the temperature of the carbon black 31 inside the screw conveyor 6, which facilitates the collection of the carbon black 31. A collection box 5 is set at the discharge port 63, and a cooling device 7 is set on the outside of the screw conveyor 6, so that the pyrolysis gas inside the screw conveyor 6 condenses to generate pyrolysis oil. The pyrolysis oil flows back to the collection box 5 along the screw conveyor 6, avoiding the direct discharge of pyrolysis gas to the outside environment and polluting the environment. This improves the treatment efficiency of pyrolysis gas and increases the yield of pyrolysis oil.

[0063] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A cooling and treatment device for carbon black and pyrolysis tail gas from a pyrolysis furnace, the pyrolysis furnace comprising a pyrolysis chamber, a condenser tower, and a discharge pipe, wherein organic solid waste is pyrolyzed in the pyrolysis chamber to produce carbon black and pyrolysis gas, the pyrolysis gas is condensed in the condenser tower to generate pyrolysis oil, and the carbon black is discharged to the outside through the discharge pipe, characterized in that... The cooling device includes: A collection box is installed at the outlet of the discharge pipe. The collection box is equipped with a first filter plate, which divides the collection box into a transfer area and an oil collection area. A screw conveyor, inclined and connected to the transfer area of ​​the collection box, includes a heat-conducting conveying pipe and screw conveying blades. A vertically downward-facing discharge port is located above the heat-conducting conveying pipe. A cooling fan is installed on the top of the screw conveyor, with its exhaust port inclined downwards towards the heat-conducting conveying pipe, blowing cool air into the pipe. Several oil guide holes are provided on the screw conveying blades, each extending in the same direction as the heat-conducting conveying pipe. An arc-shaped oil guide groove is provided on the inner wall of the heat-conducting conveying pipe, extending in the same direction as the pipe and located below it, connecting to the transfer area. A cooling device is provided, with an elastic heat-conducting cylinder between the cooling device and the heat-conducting conveying pipe; the cooling device includes a spiral water conveying pipe sleeved to the outer wall of the elastic heat-conducting cylinder, a housing, and a cold water pump. The housing includes an outer shell and an inner shell. The outer shell is fixed to the outside of the spiral water conveying pipe, and the inner wall of the outer shell has a heat insulation layer. The inner shell is fixed to the inside of the spiral water conveying pipe and connected to the elastic heat-conducting cylinder. The inner shell is made of a heat-conducting material. The cold water pump can supply flowing cold water to the spiral water conveying pipe, and the flowing cold water flows downward along the spiral water conveying pipe from above.

2. The pyrolysis furnace carbon black and pyrolysis tail gas cooling treatment device according to claim 1, characterized in that, The first filter plate has a plurality of first filter holes, and a horizontally arranged second filter plate is installed in the oil collection area. The second filter plate has a plurality of second filter holes, and the diameter of the second filter holes is smaller than the diameter of the first filter holes.

3. The pyrolysis furnace carbon black and pyrolysis tail gas cooling treatment device according to claim 1, characterized in that, It also includes a control device, and a temperature sensor is installed in the transfer area. Both the cooling device and the temperature sensor are signal-connected to the control device.

4. The pyrolysis furnace carbon black and pyrolysis tail gas cooling treatment device according to claim 1, characterized in that, The side wall of the collection box is provided with an observation window, which can provide real-time feedback on the capacity of the transfer area and the oil collection area. The screw conveyor also includes a drive motor that drives the screw conveyor blades to rotate.

5. The pyrolysis furnace carbon black and pyrolysis tail gas cooling treatment device according to claim 1, characterized in that, It also includes a moving mechanism, which includes a moving bracket and a moving wheel. The moving bracket is inclined and fixed to the screw conveyor, and the moving bracket is perpendicular to the heat-conducting conveying pipe. The central axis of the moving wheel is in the same plane as the heat-conducting conveying pipe.

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