A waste tire thermal pyrolysis regeneration equipment

Abstract

The application relates to the technical field of waste and old tire regeneration treatment, in particular to a waste and old tire thermal cracking regeneration equipment which comprises a crushing device, a heat exchange device, a heating device, a thermal cracking chamber, an exhaust valve, a first heat-conducting inner container, an exhaust pipe, a first shell, an auger conveyor and a first conveying pipe; the exhaust valve is communicatively arranged at the bottom end of the thermal cracking chamber; the first heat-conducting inner container is arranged on the inner side wall of the thermal cracking chamber; the output end of the exhaust pipe is communicatively arranged at the top of the thermal cracking chamber; the auger conveyor is arranged in the first shell, a heating cavity is arranged between the auger conveyor and the first shell, the input end of the exhaust pipe is communicatively arranged on the upper portion of the auger conveyor, and the lower portion of the auger conveyor is in communication with the crushing device; the input end of the first conveying pipe is communicatively arranged at the top of the thermal cracking chamber, and the output end of the first conveying pipe is in communication with the heat exchange device; the waste and old tire thermal cracking regeneration equipment can improve the thermal cracking efficiency of the tire, improve the full recycling effect of heat, reduce the processing energy consumption and improve the energy-saving and environment-friendly effect.

Description

Technical Field

[0001] This invention relates to the technical field of waste tire recycling, and in particular to a waste tire pyrolysis recycling device. Background Technology

[0002] With the rapid development of the automobile industry, the amount of waste tires generated is increasing year by year. The accumulation of large amounts of waste tires not only occupies land resources, but also causes serious black pollution problems. Waste tires are difficult-to-degrade polymer materials that will not decompose under natural conditions for hundreds of years. Traditional disposal methods such as landfill and incineration pose serious environmental hazards.

[0003] Thermolytic cracking of waste tires refers to a technology that breaks down rubber macromolecules by heating under anaerobic or oxygen-deficient conditions to produce recyclable products such as fuel oil, combustible gas, carbon black, and steel wire. This technology is considered an effective way to utilize waste tires as resources and meets the requirements of circular economy development.

[0004] However, existing waste tire pyrolysis equipment has technical defects in practical applications. For example, in the existing technology announcement number CN121227386B, the invention provides an energy-saving pyrolysis device and its pyrolysis method for waste tire recycling. The pyrolysis method includes the following steps: S1: Feeding: Waste tire hanging: Waste tires are hung on the feeding component in a horizontal direction; waste tire feeding; waste tire dropping; S2: Pyrolysis: The feed port is blocked; waste tire pyrolysis; waste tire dispersion: The pyrolysis furnace rotates to pyrolyze the waste tires, driving the feeding component to rotate, so as to disperse the waste tires in the pyrolysis furnace.

[0005] During the use of existing equipment, it was found that the existing equipment has a poor effect on waste heat recovery and reduces the efficiency of fuel recovery and utilization from pyrolysis, thereby increasing the energy consumption of tire recycling. Summary of the Invention

[0006] To address the aforementioned technical problems, this invention provides a waste tire pyrolysis recycling device that improves the pyrolysis efficiency of tires, enhances the full recovery and utilization of heat, reduces processing energy consumption, and improves energy conservation and environmental protection.

[0007] The present invention provides a waste tire pyrolysis recycling device, comprising a crushing device, a heat exchange device, a heating device, a pyrolysis chamber, a discharge valve, a first heat-conducting inner liner, a discharge pipe, a first shell, an auger conveyor, and a first conveying pipe; The discharge valve is connected to the bottom of the pyrolysis chamber; The first heat-conducting inner liner is installed on the side wall of the pyrolysis chamber. The outlet end of the discharge pipe is connected to the top of the pyrolysis chamber; The auger conveyor is installed inside the first housing, and a heating chamber is provided between the auger conveyor and the first housing. The inlet end of the discharge pipe is connected to the upper part of the auger conveyor, and the lower part of the auger conveyor is connected to the crushing device. The first conveying pipe input end is connected to the top of the pyrolysis chamber, and the first conveying pipe output end is connected to the heat exchange device. The heat exchange device is used to recover the oil and gas from the tire pyrolysis, and the heat exchange device is used to heat the heating chamber of the first shell after recovering the temperature of the oil and gas. The heating device is connected to the first heat-conducting inner liner, the heat exchange device, and the crushing device. The heating device heats the first heat-conducting inner liner and utilizes the recovered combustible gas. Simultaneously, the exhaust gas from the heating device is used to preheat the crushing device. The tires to be pyrolyzed are crushed by the crushing device. The crushed tires enter the auger conveyor, which lifts and transports the tire fragments to the discharge pipe. The discharge pipe discharges the fragments into the pyrolysis chamber. The heating device heats the first heat-conducting inner liner, ensuring full contact and heating between the fragments and the inner liner. As the temperature rises, the rubber macromolecules undergo a pyrolysis reaction at 400-500℃, breaking down into small-molecule oil and gas products. The pyrolyzed oil and gas exits from the first heat-conducting inner liner... The feed gas escapes into the heat exchanger, where the oil and gas are condensed. The condensable components are cooled, liquefied, and recovered, while the non-condensable components are transported to the heating device as auxiliary fuel. The exhaust gas generated by the heating device is transported to the crushing device, where the tires inside the crushing device undergo their first preheating treatment. The heat recovered by the heat exchanger is then transported to the heating chamber inside the first shell, where it heats the auger conveyor. The auger conveyor conducts heat to preheat the crushed material inside the conveyor a second time. After the solid product, carbon black, accumulates to a certain amount in the pyrolysis chamber, it is discharged through the opening of the discharge valve. The entire process is automatically controlled by a PLC controller based on feedback signals from temperature sensors, pressure sensors, and an oxygen content analyzer to adjust the feed rate and heating temperature, maintaining optimal conditions for the pyrolysis reaction.

[0008] Preferably, the heat exchange device includes a circulation device, a second shell, a second heat-conducting inner liner, a first filter, a discharge valve, a first pump body, and a storage tank; The second heat-conducting inner liner is disposed inside the second shell, and a heat exchange chamber is provided between the second heat-conducting inner liner and the second shell. The heat exchange chamber is connected to the heating chamber of the first shell through a circulation device. The first filter is installed at the top of the second housing. The input end of the first filter is connected to the output end of the first delivery pipe, and the output end of the first filter is connected to the second heat-conducting inner liner. The discharge valve is connected to the lower part of the second heat-conducting inner liner; The input end of the first pump body is connected to the inner liner of the second heat-conducting liner, and the output end of the first pump body is connected to the storage tank through a one-way exhaust valve. The storage tank is connected to the heating device. The pyrolysis oil and gas are transported to the first filter through the first conveying pipe. The first filter filters out particulate matter in the oil and gas, and then the oil and gas enter the second heat-conducting inner tank. The coolant in the second shell cools the second heat-conducting inner tank, thereby condensing the oil and gas inside. The condensable components are liquefied after cooling and discharged from the discharge valve, while the non-condensable components are compressed and stored in the storage tank by the first pump body, realizing the separate recovery of gaseous and liquid phases. The gas stored in the storage tank is transported to the heating device as auxiliary fuel. As the oil and gas continuously enter the second heat-conducting inner tank, the second heat-conducting inner tank heats the coolant in the second shell. The coolant is continuously circulated between the heating chamber and the heat exchange chamber by the circulation device, so that the heated coolant preheats the auger conveyor. The cooled coolant flows back to the second shell for reuse, forming a closed working loop.

[0009] Preferably, the crushing device includes a crushing box, a conveying channel, a crushing roller, a feed hopper, an exhaust hood, and a screen plate; The conveying channel is connected between the crushing box and the auger conveyor; The crushing roller is rotated and installed inside the crushing chamber via a power mechanism; The feed hopper is connected to the top of the crushing box; The exhaust hood is located at the bottom of the crushing chamber; The screen plate is installed at the bottom of the crushing box and is connected to the exhaust hood. The input end of the screen plate is connected to the heating device. The tire is put into the crushing box through the feed hopper. The crushing roller is driven by the power mechanism to rotate, so that the crushing roller crushes the tire. The crushed tire fragments are conveyed to the auger conveyor through the conveying channel. During the crushing process, the exhaust gas with residual heat is conveyed to the exhaust hood through the heating device. The exhaust gas is sent into the bottom of the crushing box through the exhaust hood. Then the exhaust gas is discharged through the feed hopper, so as to achieve the effect of preheating the tire and fragments in the crushing box with the exhaust gas, and improve the heat recovery and utilization effect.

[0010] Preferably, the heating device includes a boiler, a burner, a gas pipe, a mixing pipe, and a second delivery pipe; The burner is connected and installed on the boiler; The gas pipe inlet is connected to an external fuel supply device, and the gas pipe outlet is connected to the burner; The inlet end of the mixing pipe is connected to the storage tank, and the outlet end of the mixing pipe is connected to the gas pipe through a flow control valve. The second delivery pipe is connected between the boiler and the first heat-conducting inner tank. Fuel is supplied to the burner through an external fuel supply device, which heats the heat-conducting medium in the boiler. The heated heat-conducting medium is then circulated through the boiler within the first heat-conducting inner tank, thereby heating and decomposing the debris in the pyrolysis chamber. The exhaust gas generated by the burner is then delivered to the exhaust hood. By controlling the opening of the flow control valve, the recovered combustible gas stored in the storage tank is easily delivered to the gas pipe for mixing, reducing the burner's consumption of external fuel and improving energy efficiency.

[0011] Preferably, it also includes a motor and a stirring paddle; The motor is installed at the top of the pyrolysis chamber; The stirring paddle is installed inside the pyrolysis chamber, and the top of the stirring paddle is connected to the motor output. The motor drives the stirring paddle to rotate, so that the stirring paddle mixes and stirs the crushed material in the pyrolysis chamber, thereby improving its heating uniformity.

[0012] Preferably, the circulation device includes a second pump body, a third delivery pipe, and a fourth delivery pipe; The input end of the second pump body is connected to the heat exchange chamber inside the second housing through the third delivery pipe, and the output end of the second pump body is connected to the heating chamber inside the first housing. The fourth delivery pipe is connected between the heat exchange chamber and the heating chamber; by turning on the second pump body, the coolant in the second housing circulates within the first housing.

[0013] Preferably, it also includes a deflector; Multiple sets of guide vanes are staggered and installed on the inner wall of the second heat-conducting inner liner; the oil and gas in the second heat-conducting inner liner are guided and transported by the multiple sets of guide vanes, increasing the residence time of oil and gas in the second heat-conducting inner liner and improving cooling reliability.

[0014] Preferably, it also includes a second filter; The second filter is connected between the boiler and the exhaust hood; the exhaust gas discharged from the boiler is filtered through the second filter to reduce the pollution of the exhaust gas emissions.

[0015] Preferably, it also includes a flow guide; The guide platform is located at the bottom of the crushing chamber; the guide platform guides and transports the tire scraps in the crushing chamber, improving the smoothness of the scrap transport.

[0016] Preferably, the top of the baffle is set as an inclined surface; this reduces the residue of condensed liquid at the top of the baffle and improves the smoothness of discharge.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the exhaust gas generated by the heating device is transported to the crushing device, so that the tire in the crushing device undergoes the first preheating treatment. The heat recovered by the heat exchange device is transported to the heating chamber in the first shell, so that the heat heats the auger conveyor. The auger conveyor preheats the crushed material inside the chamber through heat conduction, thereby increasing the temperature of the crushed material when it enters the pyrolysis chamber, improving the pyrolysis efficiency of the tire, and improving the full recovery and utilization of heat, reducing processing energy consumption, and improving energy saving and environmental protection. After the solid product carbon black accumulates to a certain amount in the pyrolysis chamber, it is discharged through the opening of the discharge valve. The entire process is automatically adjusted by the PLC controller according to the feedback signals of the temperature sensor, pressure sensor and oxygen content analyzer to maintain the optimal working conditions of the pyrolysis reaction. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the isometric structure of the present invention; Figure 2 This is a partial isometric structural diagram of the connection between the first housing and the auger conveyor, etc. Figure 3 This is a partial isometric structural diagram showing the connection between the second housing and the first filter, etc. Figure 4 This is a partial isometric structural diagram of the connection between the motor and the stirring paddle, etc. Figure 5 This is a partial isometric structural diagram showing the connection between the second conveying pipe and the boiler, etc. Figure 6 This is a partial isometric structural diagram of the connection between the crushing box and the crushing rollers, etc. Figure 7 This is a partial isometric structural diagram showing the connection between the second housing and the first pump body, etc. Figure 8 This is a partial isometric structural diagram showing the connection between the boiler and the second filter, etc. Figure 9 This is a partial isometric structural diagram of the connection between the crushing box and the exhaust hood, etc. Figure 10 This is a partial isometric structural diagram showing the connection between the second heat-conducting inner liner and the guide plate, etc.

[0019] In the attached diagram, the following labels are used: 101, pyrolysis chamber; 102, discharge valve; 103, first heat-conducting inner liner; 104, discharge pipe; 105, first shell; 106, auger conveyor; 107, first conveying pipe; 201, second shell; 202, second heat-conducting inner liner; 203, first filter; 204, discharge valve; 205, first pump body; 206, storage tank; 301, crushing box; 302, conveying channel. ; 303, Crushing roller; 304, Feed hopper; 305, Exhaust hood; 306, Mesh plate; 401, Boiler; 402, Burner; 403, Gas pipe; 404, Mixing pipe; 405, Second conveying pipe; 501, Motor; 502, Agitator; 601, Second pump body; 602, Third conveying pipe; 603, Fourth conveying pipe; 701, Guide plate; 801, Second filter; 901, Guide platform. Detailed Implementation

[0020] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

[0021] Example 1 like Figures 1 to 10 As shown, a waste tire pyrolysis recycling device of the present invention includes a crushing device, a heat exchange device, a heating device, a pyrolysis chamber 101, a discharge valve 102, a first heat-conducting inner liner 103, a discharge pipe 104, a first shell 105, an auger conveyor 106, and a first conveying pipe 107. The discharge valve 102 is connected to the bottom end of the pyrolysis chamber 101; The first heat-conducting inner liner 103 is disposed on the inner wall of the pyrolysis chamber 101; The outlet end of the discharge pipe 104 is connected to the top of the pyrolysis chamber 101; The auger conveyor 106 is installed inside the first housing 105. A heating chamber is provided between the auger conveyor 106 and the first housing 105. The inlet end of the discharge pipe 104 is connected to the upper part of the auger conveyor 106, and the lower part of the auger conveyor 106 is connected to the crushing device. The input end of the first conveying pipe 107 is connected to the top of the pyrolysis chamber 101, and the output end of the first conveying pipe 107 is connected to the heat exchange device. The heat exchange device is used to recover the oil and gas from the tire pyrolysis, and the heat exchange device is used to heat the heating chamber of the first shell 105 after recovering the temperature of the oil and gas. The heating device is connected to the first heat-conducting inner liner 103, the heat exchange device, and the crushing device. The heating device is used to heat the first heat-conducting inner liner 103 and to use the recovered combustible gas. At the same time, the exhaust gas discharged by the heating device is used to preheat the crushing device. As a modular design approach, the crushing device, heat exchange device, and heating device operate independently yet collaboratively, facilitating equipment integration, maintenance, and upgrades. As a preferred option, the surface of the spiral blades of the auger conveyor 106 can be overlaid with a wear-resistant alloy to improve its service life in high-wear environments. It should be understood that the heating chamber between the auger conveyor 106 and the first housing 105 adopts an annular closed structure to improve heat exchange efficiency and prevent heat loss. As an alternative, the auger conveyor 106 can also be replaced by a scraper conveyor or bucket elevator to achieve vertical or inclined material conveying. Simultaneously, to prevent electrical components from being affected by dust, the equipment's control cabinet adopts a sealed structure with an IP54 or higher protection rating, and all power and signal cables are laid through pre-embedded conduits or cable trays; this is existing technology and will not be elaborated further. The overall operation of the equipment is automatically adjusted by the PLC controller based on feedback signals from temperature sensors, pressure sensors, and oxygen content analyzers; this is a conventional electrical control scheme, consistent with the structural layout shown in the attached diagram.

[0022] The heat exchange device includes a circulation device, a second shell 201, a second heat-conducting inner liner 202, a first filter 203, a discharge valve 204, a first pump body 205, and a storage tank 206; The second heat-conducting inner liner 202 is disposed inside the second shell 201. A heat exchange chamber is provided between the second heat-conducting inner liner 202 and the second shell 201. The heat exchange chamber is connected to the heating chamber of the first shell 105 through a circulation device. The first filter 203 is installed at the top of the second housing 201. The input end of the first filter 203 is connected to the output end of the first delivery pipe 107, and the output end of the first filter 203 is connected to the second heat-conducting inner liner 202. The discharge valve 204 is connected to the lower part of the second heat-conducting inner liner 202; The input end of the first pump body 205 is connected to the inside of the second heat-conducting inner liner 202, and the output end of the first pump body 205 is connected to the storage tank 206 through a one-way exhaust valve. Storage tank 206 is connected to a heating device; As an integrated design, the second shell 201 and the second heat-conducting inner liner 202 together form a compact shell-and-tube heat exchange structure, wherein the second heat-conducting inner liner 202 serves as the tube side for oil and gas flow, and the heat exchange chamber serves as the shell side for coolant flow. It should be noted that the first filter 203 is used to filter out carbon black dust entrained in the oil and gas to prevent clogging of downstream pipelines and valves. As an alternative, the first filter 203 can be a combination of a cyclone separator and a bag filter to meet the separation requirements of dust with different particle sizes. In this embodiment, the tires to be pyrolyzed are pulverized by a pulverizing device. The pulverized tires enter the auger conveyor 106, which lifts and transports the tire fragments to the discharge pipe 104. The discharge pipe 104 discharges the fragments into the pyrolysis chamber 101. The heating device heats the first heat-conducting inner liner 103, ensuring that the fragments in the pyrolysis chamber 101 are in full contact with the first heat-conducting inner liner 103 and are heated. As the temperature rises, the rubber macromolecules undergo a pyrolysis reaction at 400-500℃, breaking down to generate small molecule oil and gas products. The pyrolysis oil and gas escapes from the first conveying pipe 107 and enters the heat exchange device. The heat exchange device condenses the oil and gas, condensable components are cooled and liquefied for recovery, and non-condensable components are transported to the heating device as auxiliary fuel. The heating device generates... The exhaust gas is transported to the crushing device, where the tires inside undergo initial preheating. The heat recovered by the heat exchanger is then transferred to the heating chamber within the first housing 105, where it heats the auger conveyor 106. The auger conveyor 106 conducts heat to preheat the internal crushed material, increasing its temperature upon entering the pyrolysis chamber 101, thereby improving the pyrolysis efficiency of the tires. This also enhances the full recovery and utilization of heat, reduces processing energy consumption, and improves energy conservation and environmental protection. Once the solid product, carbon black, accumulates to a certain amount in the pyrolysis chamber 101, it is discharged through the opening of the discharge valve 102. Throughout the process, the PLC controller automatically adjusts the feeding speed and heating temperature based on feedback signals from temperature sensors, pressure sensors, and an oxygen content analyzer to maintain optimal conditions for the pyrolysis reaction.

[0023] Compared with existing technologies, this technical solution has the following advantages: Significantly improves thermal efficiency and energy saving effect: By setting the heating chamber of the first shell 105, the material in the screw conveyor 106 is preheated for a second time. At the same time, the exhaust gas of the heating device is used for the initial preheating of the crushing device, forming a multi-stage waste heat recovery network, which greatly reduces the overall processing energy consumption and avoids the energy waste caused by the direct emission of high temperature exhaust gas in traditional equipment. Its non-obviousness lies in completely transforming the preheating process, which originally required independent energy consumption, into a waste heat utilization process. Achieving a closed-loop energy self-sufficiency system: By recovering the non-condensable combustible gas generated from pyrolysis and using it as auxiliary fuel for the heating device, the dependence on external primary energy sources is significantly reduced, enabling the equipment to partially achieve energy self-sufficiency during operation and reducing operating costs.

[0024] Example 2 Based on Example 1, the present invention provides a waste tire pyrolysis recycling device, wherein the crushing device includes a crushing box 301, a conveying channel 302, a crushing roller 303, a feeding hopper 304, an exhaust hood 305, and a screen plate 306. The conveying channel 302 is connected between the crushing box 301 and the screw conveyor 106; The crushing roller 303 is rotatably installed inside the crushing box 301 via a power mechanism; The feed hopper 304 is connected to the top of the crushing box 301; The exhaust hood 305 is located at the bottom of the crushing chamber 301; The screen plate 306 is installed at the bottom of the crushing box 301 and communicates with the exhaust hood 305. The input end of the screen plate 306 is connected to the heating device. It should be understood that the crushing roller 303 has staggered crushing teeth on its surface to achieve shearing and tearing of the tire; as an alternative, the crushing roller 303 can be replaced by a double roll crusher or a hammer crusher to meet different particle size requirements. The heating device includes a boiler 401, a burner 402, a gas pipe 403, a mixing pipe 404, and a second delivery pipe 405; Burner 402 is connected to boiler 401; The gas pipe 403 has an inlet end connected to an external fuel supply device and an outlet end connected to a burner 402. The input end of the mixing pipe 404 is connected to the storage tank 206, and the output end of the mixing pipe 404 is connected to the gas pipe 403 through a flow control valve. The second conveying pipe 405 is connected and disposed between the boiler 401 and the first heat-conducting inner liner 103; It also includes a motor 501 and a stirring paddle 502; Motor 501 is installed at the top of pyrolysis chamber 101; The stirring paddle 502 is rotatably installed inside the pyrolysis chamber 101, and the top of the stirring paddle 502 is connected to the output end of the motor 501. The circulation device includes a second pump body 601, a third delivery pipe 602, and a fourth delivery pipe 603; The input end of the second pump body 601 is connected to the heat exchange chamber inside the second housing 201 through the third delivery pipe 602, and the output end of the second pump body 601 is connected to the heating chamber inside the first housing 105. The fourth delivery pipe 603 is connected and installed between the heat exchange chamber and the heating chamber; It also includes the air deflector 701; Multiple sets of baffles 701 are installed in staggered positions on the inner wall of the second heat-conducting inner liner 202; It also includes a second filter 801; The second filter 801 is connected and installed between the boiler 401 and the exhaust hood 305; It also includes the flow guide 901; The guide platform 901 is located at the bottom of the crushing box 301; The top of the deflector 701 is set as a slope; In this embodiment, the pyrolyzed oil and gas are transported to the first filter 203 through the first delivery pipe 107. The first filter 203 filters out particulate matter from the oil and gas, which then enters the second heat-conducting inner liner 202. The coolant in the second shell 201 cools the second heat-conducting inner liner 202, thereby condensing the oil and gas inside. The condensable components are liquefied after cooling and discharged from the discharge valve 204, while the non-condensable components are compressed and stored in the storage tank 206 by the first pump body 205, achieving separate recovery of the gaseous and liquid phases. The gas stored in the storage tank 206 is then transported to the heating device as auxiliary fuel. As the oil and gas continuously enter the second heat-conducting inner liner 202, the second heat-conducting inner liner 202 heats the coolant in the second shell 201, which is then circulated through the circulation device. The coolant is continuously circulated between the heating chamber and the heat exchange chamber, thereby preheating the auger conveyor 106. The cooled coolant is then returned to the second housing 201 for reuse, forming a closed working loop. Tires are placed into the crushing box 301 through the feed hopper 304. The crushing roller 303 is rotated by the power mechanism, crushing the tires. The crushed tire fragments are then conveyed to the auger conveyor 106 through the conveying channel 302. During the crushing process, the exhaust gas with residual heat is conveyed to the exhaust hood 305 through the heating device. The exhaust gas is then sent from the bottom of the crushing box 301 through the exhaust hood 305 and discharged through the feed hopper 304. This process achieves the effect of preheating the tires and fragments in the crushing box 301 with the exhaust gas, improving the heat recovery and utilization effect. Compared with the existing technology, this technical solution has the following advantages: Improving energy recovery quality and safety: The heat exchanger is designed as a dual-function unit for oil and gas condensation and waste heat recovery, realizing the cascade utilization of energy. High-temperature oil and gas are first used to heat the cracking chamber, its latent heat is used to preheat the feed, and its sensible heat is used to heat the coolant, maximizing energy utilization. At the same time, non-condensable combustible gas is recovered to the boiler for combustion, which not only utilizes its calorific value but also avoids the safety hazards of direct emission (combustible gas is flammable and explosive). This closed-loop control system is non-obvious because it transforms products that are traditionally considered waste into critical fuels. Enhancing system operational stability and continuity: By setting up the first filter 203 and the second filter 801, the heat exchange surface of the heat exchange device and the atmospheric environment are protected respectively, avoiding dust blockage and pollution emissions. By setting up staggered guide plates 701, the residence time of oil and gas in the heat exchange zone is extended, ensuring sufficient condensation. The inclined surface design at the top of the guide plate 701 effectively prevents condensate accumulation and ensures smooth drainage. These detailed designs together ensure that the equipment can carry out long-term, uninterrupted industrial production. Optimize preheating effect and pyrolysis efficiency: By introducing hot exhaust gas from the bottom of the crushing chamber 301, the principle of hot air rising is used to ensure that the hot exhaust gas and the material are in full contact, resulting in uniform and efficient preheating. At the same time, the stirring paddle 502 in the pyrolysis chamber 101 provides forced convection, which increases the heat exchange coefficient between the material and the first heat-conducting inner liner 103 by a factor of two, shortens the single-batch pyrolysis cycle, and significantly improves the processing capacity per unit time.

[0025] This invention discloses a waste tire pyrolysis recycling device. During operation, the tires to be pyrolyzed are pulverized by a pulverizing device. The pulverized tires then enter a screw conveyor 106, which lifts and transports the tire fragments to a discharge pipe 104. From the discharge pipe 104, the fragments are discharged into a pyrolysis chamber 101. A heating device heats a first heat-conducting inner liner 103, ensuring thorough contact and heating between the fragments in the pyrolysis chamber 101 and the inner liner 103. As the temperature rises, the rubber macromolecules undergo a pyrolysis reaction at 400-500℃, breaking down into small-molecule oil and gas products. The pyrolyzed oil and gas escapes from a first conveying pipe 107 and enters a heat exchanger. The heat exchanger condenses the oil and gas, liquefying and recovering the condensable components, while the non-condensable components are transported away. The fuel is fed to the heating device as auxiliary fuel. The exhaust gas generated by the heating device is sent to the crushing device to preheat the tires inside the crushing device. The heat recovered by the heat exchange device is sent to the heating chamber in the first shell 105 to heat the auger conveyor 106. The auger conveyor 106 preheats the crushed material inside the auger conveyor through heat conduction, increasing the temperature of the crushed material when it enters the pyrolysis chamber 101, thereby improving the pyrolysis efficiency of the tires. At the same time, the heat is fully recovered and utilized. After the solid product carbon black accumulates to a certain amount in the pyrolysis chamber 101, it is discharged through the opening of the discharge valve 102. The entire process is automatically adjusted by the PLC controller based on the feedback signals from the temperature sensor, pressure sensor and oxygen content analyzer to maintain the optimal operating conditions of the pyrolysis reaction.

[0026] The auger conveyor 106, first filter 203, first pump body 205, boiler 401, burner 402, motor 501, second pump body 601 and second filter 801 of the waste tire pyrolysis recycling equipment of the present invention are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0027] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A waste tire pyrolysis recycling device, characterized in that, It includes a crushing device, a heat exchange device, a heating device, a pyrolysis chamber (101), a discharge valve (102), a first heat-conducting inner liner (103), a discharge pipe (104), a first shell (105), an auger conveyor (106), and a first conveying pipe (107). The discharge valve (102) is connected to the bottom end of the pyrolysis chamber (101); The first heat-conducting inner liner (103) is disposed on the inner wall of the pyrolysis chamber (101); The outlet end of the discharge pipe (104) is connected to the top of the pyrolysis chamber (101); The auger conveyor (106) is located inside the first housing (105). A heating chamber is provided between the auger conveyor (106) and the first housing (105). The inlet end of the discharge pipe (104) is connected to the upper part of the auger conveyor (106), and the lower part of the auger conveyor (106) is connected to the crushing device. The input end of the first conveying pipe (107) is connected to the top of the thermal cracking chamber (101), and the output end of the first conveying pipe (107) is connected to the heat exchange device. The heat exchange device is used to recover the oil and gas from the tire cracking, and the heat exchange device is used to heat the heating chamber of the first shell (105) after recovering the temperature of the oil and gas. The heating device is connected to the first heat-conducting inner liner (103), the heat exchange device, and the crushing device. The heating device is used to heat the first heat-conducting inner liner (103) and to use the recovered combustible gas. At the same time, the exhaust gas discharged by the heating device is used to preheat the crushing device.

2. The waste tire pyrolysis recycling equipment as described in claim 1, characterized in that, The heat exchange device includes a circulation device, a second shell (201), a second heat-conducting inner liner (202), a first filter (203), a discharge valve (204), a first pump body (205), and a storage tank (206). The second heat-conducting inner liner (202) is disposed inside the second shell (201), and a heat exchange chamber is provided between the second heat-conducting inner liner (202) and the second shell (201). The heat exchange chamber is connected to the heating chamber of the first shell (105) through a circulation device. The first filter (203) is installed at the top of the second housing (201). The input end of the first filter (203) is connected to the output end of the first conveying pipe (107), and the output end of the first filter (203) is connected to the second heat-conducting inner liner (202). The discharge valve (204) is connected to the lower part of the second heat-conducting inner liner (202); The input end of the first pump body (205) is connected to the inside of the second heat-conducting inner liner (202), and the output end of the first pump body (205) is connected to the storage tank (206) through a one-way exhaust valve; The storage tank (206) is connected to the heating device.

3. The waste tire pyrolysis recycling equipment as described in claim 1, characterized in that, The crushing device includes a crushing box (301), a conveying channel (302), a crushing roller (303), a feed hopper (304), an exhaust hood (305), and a screen plate (306); The conveying channel (302) is connected between the crushing box (301) and the screw conveyor (106); The crushing roller (303) is rotatably mounted inside the crushing box (301) via a power mechanism; The feed hopper (304) is connected to the top of the crushing box (301); An exhaust hood (305) is located at the bottom of the crushing chamber (301); The screen plate (306) is installed at the bottom of the crushing box (301) and communicates with the exhaust hood (305). The input end of the screen plate (306) is connected to the heating device.

4. The waste tire pyrolysis recycling equipment as described in claim 2, characterized in that, The heating device includes a boiler (401), a burner (402), a gas pipe (403), a mixing pipe (404), and a second delivery pipe (405); The burner (402) is connected to the boiler (401); The gas pipe (403) inlet is connected to an external fuel supply device, and the gas pipe (403) outlet is connected to a burner (402); The inlet of the mixing pipe (404) is connected to the storage tank (206), and the outlet of the mixing pipe (404) is connected to the gas pipe (403) through a flow control valve; The second delivery pipe (405) is connected between the boiler (401) and the first heat-conducting inner liner (103).

5. The waste tire pyrolysis recycling equipment as described in claim 1, characterized in that, It also includes a motor (501) and a stirring paddle (502); The motor (501) is mounted on top of the pyrolysis chamber (101); The agitator (502) is rotatably installed inside the pyrolysis chamber (101), and the top of the agitator (502) is connected to the output end of the motor (501).

6. The waste tire pyrolysis recycling equipment as described in claim 2, characterized in that, The circulation device includes a second pump body (601), a third delivery pipe (602) and a fourth delivery pipe (603). The input end of the second pump body (601) is connected to the heat exchange chamber in the second housing (201) through the third delivery pipe (602), and the output end of the second pump body (601) is connected to the heating chamber in the first housing (105). The fourth delivery pipe (603) is connected between the heat exchange chamber and the heating chamber.

7. The waste tire pyrolysis recycling equipment as described in claim 2, characterized in that, It also includes a deflector plate (701); Multiple sets of guide vanes (701) are installed in staggered positions on the inner wall of the second heat-conducting inner liner (202).

8. The waste tire pyrolysis recycling equipment as described in claim 4, characterized in that, It also includes a second filter (801); The second filter (801) is connected between the boiler (401) and the exhaust hood (305).

9. The waste tire pyrolysis recycling equipment as described in claim 3, characterized in that, It also includes a flow guide (901); The guide platform (901) is located at the bottom of the crushing box (301).

10. The waste tire pyrolysis recycling equipment as described in claim 7, characterized in that, The top of the deflector (701) is set as a slope.

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