Pyrolysis Processes for End-of-Life Tire Recovery

Method to increase BTX (benzene, toluene, xylene) content in tire pyrolysis oil by optimizing cracking conditions. The method involves prolonging the residence time of cycloolefins and aromatic hydrocarbons in the tire particles by increasing cracking chamber pressure. It also increases the residence time of short-chain olefins inside the particles by using larger tire particle sizes. This allows more BTX formation. The BTX is then discharged from the cracking reactor quickly by increasing air velocity to prevent over-conversion.

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Char carbon black manufacturing system that uses a multi-stage pyrolysis furnace to convert waste tires into high quality carbon black without using catalysts or post-processing. The system has a sealed pyrolysis furnace with multiple internal rotating transfer units to mix and heat the waste tire powder. This ensures uniform temperature contact, prevents leaks, and lengthens the thermal contact time. The furnace also has a heat source supply unit to maintain temperature. The system avoids problems of leaks and uniformity in conventional rotary furnaces. The pyrolyzed tire powder goes through metal removal, grinding, and sorting to produce carbon black.

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A method for extracting valuable compounds from feedstocks like plastics, tires, and waste by using microwave plasma and pyrolysis. The method involves heating the feedstock in a pyrolysis chamber using microwaves to convert it into pyrolysis products. These products are then exposed to a microwave plasma to break down and extract specific target compounds like olefins. The plasma temperature is precisely controlled using microwave pulse shaping to recover the desired compounds.

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A reactor and method for recycling tires and other rubber materials into high quality carbon black, oil, and gas. The reactor involves converting tire-derived materials into these products in a two-stage process. In the first stage, called pyrolysis, the rubber is heated in an oxygen-free environment to extract oil. In the second stage, the pyrolysis char is heated in an oxygen-free environment with the strategic introduction of water steam or CO2 to create high surface area and structure carbon black. This involves a reactor with zones to heat and maintain the material at specific temperatures, along with injection of water steam or CO2 to enhance the conversion. The oxygen-free atmosphere prevents combustion and allows controlled chemical reactions.

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Pyrolysis method and reactor for recovering compounds from tire materials using microwave radiation. The method involves feeding tire material into a chamber and exposing it to controlled microwave radiation at frequencies between 300 MHz and 2.5 GHz. The radiation power can be varied to continuously change the temperature within the chamber over a range that includes the decomposition temperature of the target compounds. This allows selective extraction of oils, hydrocarbons, monomers, plasticizers, etc. from tire materials by varying the microwave power and temperature. The reactor has multiple temperature zones for pyrolyzing different compounds simultaneously.

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A large-scale, efficient and environmentally friendly method for producing fuel oil and carbon black from waste tires. The process involves breaking the tires into small particles, then cracking the tire particles at high temperatures to produce fuel oil and carbon black. The cracking is done at negative pressure to prevent leaks and emissions. The fuel oil is condensed and dehydrated to remove water. The method provides high productivity and improved safety compared to existing tire recycling processes.

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Continuous waste tire pyrolysis equipment to prepare high-value hard carbon-graphene material from waste tires. The system involves crushing the tires, pyrolyzing the rubber particles in a sealed rotary kiln, separating pyrolysis oil, and further processing the solid phase to make graphene. The pyrolysis gas is treated to recover energy. This closed-loop recycling of tires avoids pollution and waste, and produces valuable graphene.

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Waste tire pyrolysis device for recycling pyrolysis gas that improves the yield of pyrolysis oil and gas compared to indirect heating methods. The device has a waste tire silo, molten salt pyrolysis furnace, pyrolysis gas condenser, molten salt heating furnace, and pyrolysis gas heat exchanger. The molten salt pyrolysis furnace and heating furnace are connected in a closed loop. Waste tires feed into the pyrolysis furnace, and the molten salt contacts and heats the tires directly. The pyrolysis gas exits the furnace and condenses in the condenser to separate the pyrolysis oil. The pyrolysis gas then passes through the heat exchanger to preheat the molten salt before entering the pyrolysis furnace again. This allows efficient recycl

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System for continuous pyrolysis of organic materials like used tires to produce recovered carbon black. The system has a rotating tubular reactor, quenching unit, and burner unit. The reactor has multiple heating gas outlet valves along its length to control heat supply to different zones. This allows optimized pyrolysis conditions. The reactor also has a tube cleaning device to prevent clogging by transporting deposited solids from the pyrolysis gas outlet back into the reactor.

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A system for using pyrolyzed steel cord residue as a fuel in cement kilns and other high heat applications without burning whole tires. The system involves pyrolyzing the steel cord residue to separate out the pyrolyzed carbon fuel from the remaining steel cord pieces. This allows controlled addition of the carbon fuel to the kiln instead of whole tires which can cause temperature spikes. The pyrolysis process breaks down the rubber and steel in the residue to produce carbon fuel. The carbon fuel can be used as an alternative to traditional fossil fuels in cement kilns and other high heat applications to reduce reliance on primary resources and emissions.

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A process for recycling waste tires into pyrolysis oil and gas. The process involves pyrolyzing waste tires at 350-400°C using a vertical tower reactor with internal heating and stirring. The pyrolysis gas is combusted to generate high-temperature flue gas. A steam jet pump extracts exhaust gas from the combustion kiln and mixes it with steam to reduce the pressure. This mixed fluid is compressed and discharged back to the kiln. The steam jet pump allows efficient utilization of the high-temperature flue gas as a heat source for pyrolysis, condensing pyrolysis oil into liquid fuel, and recycling pyrolysis gas into fuel.

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A device and method for producing environmentally friendly carbon black from waste tire rubber using pyrolysis. The device has separate screws for pyrolysis and deep pyrolysis of the rubber particles at different temperatures. The pyrolysis screw has a horizontal and vertical spiral feed mechanism to compact the particles and reduce air intake. Nitrogen purging is used to remove toluene during deep pyrolysis. This allows producing carbon black with low toluene content (toluene transmittance >85%) and low ash, meeting environmental standards.

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Pyolysis of raw material, in particular raw materials deriving from tires or bitumen and pyrolysis equipment operating according to a method that allows precise control of the transfer of thermal energy and consequently of the reaction temperature to be exerted. The method includes generating a plasma beam from the mass of raw material, focusing or distributing the beam of the laser radiation on a localized area of a pre-established surface area on the surface of the mass of raw material, being progressively moved along the entire surface of the mass of raw material by activating the pyrolytic reaction on all of said mass of raw material, and separating one from another the gaseous, liquid and solid phases of the reaction products and storing, for further treatment, said reaction products separated one from another.

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A two-stage continuous pyrolysis device for waste tires that maximizes both oil and carbon black yields compared to single-stage systems. The device has two reactors, a settling tank, and screws for transporting the material between stages. The first reactor operates at negative pressure to prevent secondary cracking of oil and gas. Carbon black is partially separated here and settles. The second reactor has positive pressure to prevent carbon black powder from entering the condensing system. This allows optimizing carbon quality. The two-stage process enables maximizing oil production in stage 1 and carbon quality in stage 2.

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A system and method for processing tires that improves efficiency and reduces costs compared to existing methods. The system involves spinning the tires to extract steel wire, crushing the remaining tire, magnetically separating the iron, using flue gas to transport the rubber particles, cycloning the mixture, and pyrolyzing the rubber in a stirred reactor with molten salt. The spinning, magnetic separation, and flue gas transport steps allow recycling the steel and avoiding iron contamination in pyrolysis. The molten salt provides indirect heating and high heat capacity to improve pyrolysis efficiency. The stirring and cycloning steps prevent agglomeration and enable homogeneous pyrolysis.

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Micro-negative pressure pyrolysis method for recycling waste tires that improves the efficiency and mechanization of tire thermal cracking. The method involves crushing the tires in two stages, injecting the crushed material into a sealed reactor with a microporous plate, heating it under low pressure to 120°C, then increasing the heating rate and pressure to 450°C, and pyrolyzing it at reduced pressure while the solid phase remains on the microporous plate. This allows consistent tire crushing, pyrolysis, and material collection without steel wire stripping.

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Device for modifying pyrolysis oil and charcoal from waste tires to improve their quality and market value. The device consists of a two-stage process with a pyrolysis furnace followed by a gasifier. The pyrolysis converts the tires into pyrolysis gas and charcoal. The hot pyrolysis gas and charcoal then enter the gasifier where they are further processed. The gasifier has separate zones for gasification, modification, and ash accumulation. This allows further cracking of the gas to remove heavy tars, and separation of remaining organic matter from the charcoal. The modified gas is combusted, and the cleaner charcoal is recovered.

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Integrated device and method for efficiently pyrolyzing and activating waste tires in a two-stage process. The device has a sealed feeding section, a pyrolysis section, a gas-solid conveying channel, and an activation section. The pyrolysis section breaks down the tires into pyrolysis products like oil and gas. The gas-solid conveying channel transfers the pyrolysis gas to the activation section where it reacts with the remaining solid tire pieces to produce further products. The sealed feeding section prevents oxygen from entering during pyrolysis. This two-stage process improves efficiency by maximizing pyrolysis in the first stage and then further converting the remaining solids in the second stage.

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Recycling end-of-life tires into petroleum products in an efficient, economical, and environmentally friendly way using pyrolysis. The recycling process involves heating the tires in a pyrolysis chamber to break down the rubber into usable petroleum products. The pyrolysis chamber has partitions to separate the feed section for tires, the input section for gas recovery, and the pyrolysis chamber itself. A gas shut-off fan and burners provide heat. A condenser collects liquid products and channels separate the pyrolysis gas. The control panel regulates the process. The design aims to improve efficiency and environmental impact compared to existing pyrolysis systems for recycling tires.

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Device and method for efficient and high-value utilization of waste tires through pyrolysis. The pyrolysis process involves heating waste tires without steel wires using modified pyrolysis carbon as a thermosetting carrier. This avoids the need for external heat sources like gas or oil. The modified carbon is produced by incompletely combusting the pyrolysis gas. The modified carbon is then used as the heating media to rapidly pyrolyze the tires. This provides a self-sustaining and efficient pyrolysis process that recovers maximum value from waste tires.

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A method to heat cement kilns and other high heat consuming plants without burning fossil fuels. The method involves pyrolyzing disintegrated tires in a separate pyrolyzer at high temperatures to produce a hot steam mixture. This hot steam mixture is then continuously fed into the cement kiln or other plant to provide the heat needed for operation. The pyrolysis process breaks down the tires into carbon and steel cord while generating the hot steam.

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A system for processing tires that improves efficiency and reduces energy consumption compared to existing tire pyrolysis systems. The system uses specialized equipment like a wire drawing machine to extract steel from the tires before pyrolysis, a magnetic separator to remove small diameter steel wires, and a molten salt heating furnace to indirectly heat the pyrolysis reactor. This allows separating and recycling steel, avoiding steel in the rubber particles, and using the hot molten salt as a reaction medium. The system also uses a cyclone separator to recycle flue gas and a vertical reactor with internal stirring for shorter reaction times.

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Continuous, efficient and green method to convert waste tires into superheated steam. The method involves pyrolyzing the tires in stages at controlled temperatures to produce pyrolysis oil, carbon black and gas. The pyrolysis devices are connected in sequence. The first device pyrolyzes the tires at a low temperature to yield oil and carbon black. The second device further pyrolyzes the oil at a higher temperature to produce gas. This two-stage pyrolysis allows selective conversion of the tire components into valuable products. The resulting superheated steam is generated by passing the gas through a reformer device heated by combustion of the carbon black. The method provides a closed-loop conversion process that avoids environmental issues like dioxin generation and coking.

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A method to efficiently burn tires in cement kilns without the need for pre-treatment while preventing contamination of the cement and maintaining temperature control. The method involves separating the pyrolysis products (carbon and steel cord) during tire combustion. This is done by connecting a pyrolysis carbon separator to the combined pyrolysis carbon output from the tire pyrolysis reactor. The steel cord output from the pyrolysis reactor is connected separately to the carbon separator. This allows the carbon to burn completely while the steel cord separates and exits separately. This prevents contamination of the cement with steel cord particles and enables clean burning of tires in the cement kiln.

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Pyrolysis process for treating large unshredded materials like medical waste and tires using a reactor integrated with a sand combustor and flue gas combustor. The reactor has a loading point for introducing the large particles, a pyrolysis zone, and a cooler section. The sand combustor provides hot sand to heat the reactor. The flue gas combustor burns the sand combustion off-gases to recover heat. This allows treating large particles without shredding. The integrated combustors provide efficient sand heating and flue gas circulation. The reactor design also provides good sealing to prevent oxygen infiltration.

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Continuous infrared cracking of waste tires to convert them into valuable products like oil, gas, and carbon black. The process uses a vertical furnace with infrared heating to crack the suspended tire material without coking. Air blowing keeps the tires in suspension. A closed loop recovers cracked gas, removes impurities, and separates oil, gas, and carbon black. The furnace design, closed loop, and infrared heating provide efficient, pollution-free tire recycling.

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Automated, continuous pyrolysis installation for recycling end-of-life car tires into valuable products like oil, metal, and carbon. The installation has a hopper to feed tire skeins to a shredder, then a thermal reactor with a separating valve to extract pyrolysis oil. A fuel pump and burner inject additional heat through a hot air heater. The closed-loop system allows continuous, automated tire processing without oxygen for cleaner recycling compared to open systems.

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Pyrolysis system for recycling waste materials like tires, plastics, and wood. The system has a screw-fed pyrolysis chamber for breaking down the waste into useful products. The screw moves the material through the chamber while pyrolyzing. The pyrolysis system can be combined with a pre-processing module that mechanically stresses the waste before pyrolysis to further break it down. After pyrolysis, the products can be cooled and stored. This allows extracting gas and vapors later instead of during processing.

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Pyrolysis system for recycling waste materials like tires, plastic, wood, etc. The system has a pyrolysis chamber with multiple heaters that can independently heat different sections. This allows more uniform heating and better pyrolysis compared to a single heater. The system also includes pre-processing module to mechanically stress the waste before pyrolysis. This breaks down the material further for better pyrolysis. The pyrolysis products can be cooled and stored for further processing. The independent heating of sections allows customization of pyrolysis conditions for different materials.

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Intermittent rapid pyrolysis device and method for whole waste tires that uses molten salt as a heat transfer medium to improve efficiency and product recovery compared to traditional gas or flue gas. The device has a molten salt pump, heating device, and storage tank to circulate the salt between the tire pyrolysis reactor and recovery devices. This allows rapid, intermittent pyrolysis cycles where the salt acts as a heat sink and carrier for the pyrolysis products. The salt extracts heat from the tire to pyrolyze it quickly, then carries the volatile products back to the recovery devices. This improves tar recovery compared to gas carriers. The salt also extracts carbon black from the tire, which is recovered separately. The intermittent cycles allow multiple pyrolysis runs without preheating the reactor.

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Pyrolysis method for recycling tire waste into gases, liquids, and solids using lasers to achieve high temperatures for breaking down the material. The process involves focusing lasers on small areas of the waste to create localized heating and avoid using heat carriers. The gases are drawn off during the reaction and condensed to separate the products. This allows simpler equipment compared to conventional pyrolysis reactors. The laser method enables precise temperature control and faster, more efficient conversion compared to heating large volumes of material.

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Continuous pyrolysis system for whole waste tires that allows continuous processing without pre-shredding the tires. The system uses a ring configuration with a preheating box, thermal cracking reactor, and condensing system. Tires are fed into the preheating box, heated, and then moved into the cracking reactor. Hot air from the cracking reactor is used to preheat incoming tires. The cracking reactor has a screw feeder, support bin, and heater with a combustion furnace. The condensing system separates heavy and light oil products from the cracking process. This closed-loop, ring-shaped design enables continuous processing of whole tires without the need for pre-shredding.

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Refining waste tire pyrolysis residue to make it usable in various applications by thermal processing at temperatures above 550°C. The thermal decomposition involves cyclization and aromatization reactions that convert the irregular, heterogeneous structure into a more ordered, graphitic structure. It also eliminates gaseous products like hydrogen, methane, CO, and SOx. The refined residue has lower ash content, reduced toxicity, and improved odor compared to unprocessed pyrolysis residue. The refining temperature is below 850°C to avoid excessive gas evolution and compaction.

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Pyrolysis system for recycling waste tires into useful products like oil and carbon. The system uses a vertical reactor with stirring rods to mix and loosen the material. The reactor has multiple layers of radiant tubes to provide heat. The pyrolysis gas and oil exit through pipes. The system also has a spray tower to cool and separate the products. This improves tar yield and reduces secondary reactions. The stirring loosens the material to reduce pressure drop. The pipes have through holes to facilitate oil flow. The pipes are arranged parallel to radiant tubes for quicker exit. The system is optimized for waste tire pyrolysis.

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Staged temperature controlled tire cracking process to efficiently convert waste tires into useful products like carbon black and oil. The process involves staging the cracking temperatures in two separate chambers. The tires are initially cracked at a lower temperature in the first chamber, then further cracked at a slightly higher temperature in the second chamber to minimize secondary cracking and reduce undesirable emissions. This two-step process is done using specialized equipment with inclined chambers, spiral belts, hot air outlets, and rotary valves.

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Endothermic reaction apparatus for efficient endothermic processes like pyrolysis with reduced energy consumption. The apparatus has multiple fluidized bed zones for combustion and pyrolysis. The combustion zone heats the particles, and the pyrolysis zone uses the hot particles to pyrolyze feed material. The combustion zone recycles some gas product back as fuel, forming a closed loop. This reduces external fuel needs. The apparatus also has features like injectors to prevent heat loss and mass transfer devices to move particles between beds.

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Self-dusting waste tire pyrolysis and cracking system for efficiently converting waste tires into clean combustible gas. The system uses a regenerative radiant tube heating design in the reactor chambers to pyrolyze and crack the tires. The radiant tubes disperse the tires for even pyrolysis and cracking. The system also has a particle bed dust remover, filter, and gas scrubber to prevent dust escaping. This allows clean gas production from tires without dust emissions.

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Low temperature pyrolysis of waste tires in a nitrogen atmosphere to convert tires into valuable products like oil, gas, and carbon black. The process involves treating ground tire powder in a nitrogen atmosphere at low temperatures (around 600°C) using a plasma generator. The plasma heats the tire powder rapidly and gasifies it through pyrolysis. The gases can be collected for use as fuel, and the remaining solid is carbon black. This method allows efficient recycling of tires into useful products with low environmental impact compared to high-temperature pyrolysis.

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Process for efficiently converting waste tires into char through non-oxidative thermal degradation. The process involves feeding tires into a sealed reactor with zones heated to temperatures above rubber degradation. A screw auger agitates and transports the tires through the zones. Gas evolution is withdrawn. The process is run both forward and reverse to minimize char transport gaps. This enables complete degradation without oxygen. The char is then cooled and discharged. The sealed system prevents oxygen ingress.

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A high temperature pyrolysis reactor and system for producing oil and carbon black from waste tires. The reactor has a vertical tower with powder nozzles, mixers, and reaction tubes. The system includes crushing, transport, filtration, cooling, separation, and recovery steps. The tires are crushed, powdered, and fed into the reactor. The pyrolysis produces oil and carbon black. The oil and gas are cooled and separated. The carbon black is filtered. The oil is further processed. The exhaust gases are detoxified and recycled as fuel.

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A method and device for treating used tires that reduces pollution and costs compared to conventional methods. The method involves using steam generated from water as a high-temperature medium to decompose organic materials in used tires in a pyrolysis furnace instead of air. This prevents combustion and oxidation. The steam is generated by heating water using a water molecule thermal energy generating device. The steam is then cooled and recycled. The closed-loop steam environment protects the tires from oxidation while decomposing them. This eliminates the need for catalysts and avoids secondary pollution. The steam also provides a protective atmosphere to prevent combustion. The exhaust gases from pyrolysis are purified and combusted to recover heat. The solid materials are collected separately. The steam generation, recycling, and closed-loop pyrolysis reduce costs, pollution, and working hours compared to conventional methods.

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Low-temperature catalytic pyrolysis of waste tires to produce fuel oil and carbon black. The process involves catalytic pyrolysis at lower temperatures compared to conventional tire pyrolysis. This reduces activation energy and increases reaction rates. It improves oil quality and yield compared to high-temperature pyrolysis. The lower temperature also reduces harmful gas emissions. The catalyst accelerates the pyrolysis reactions to convert the tire into useful products.

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A process to produce syngas from pyrolytic carbon black generated during waste tire pyrolysis. The process involves two chambers connected by a steam heating device. In the first chamber, the carbon black combusts in incomplete combustion with excess air. In the second chamber, the combusted carbon black gasifies in a reducing environment. The steam heating device preheats the gasification chamber using the hot flue gas from the combustion chamber. This two-step process improves syngas yield compared to direct gasification of the pyrolytic carbon black.

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A method and device for processing waste tires that avoids pollution and secondary contaminants compared to conventional methods. The processing involves heating the tires using high temperature gaseous water molecules instead of air or other media. This prevents oxidation and combustion reactions. The gaseous water molecules are generated by heating liquid water. The heated water vapor is then further heated to gaseous water molecules. This closed-loop recycling of water reduces costs and allows continuous processing. The high temperature gaseous water decomposes the tires, producing tar, gases, water, and carbon black. This avoids toxic gases and secondary pollution compared to air cracking. The gaseous byproducts are purified and burned to recover energy. Solid materials like carbon black and steel are collected.

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Pyrolysis system and process for recycling solid waste like tires or roofing pellets into useful products. The system uses multiple reactors arranged in series with the outlet of one reactor feeding into the inlet of the next reactor. This allows controlled temperature progression as the material moves through the reactors. Gas and oil are removed from each reactor separately to prevent contamination of the carbon black. The reactors are horizontally arranged with the gas outlets positioned closer to the discharge end than the inlet end. This enables sequential gas removal at progressively higher temperatures. The solid fuel is preheated before entering the first reactor. The process involves feeding solid waste into the first reactor, pyrolyzing it to produce gases and carbon black, removing the solids, then pyrolyzing the solids further to produce more gases. The gases are condensed separately in multiple stages to

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Device and method for efficiently cracking waste rubber to convert it into carbon black and oil for recycling instead of burning it. The device uses a spiral feeder to compress and feed the waste rubber into a staged reaction generator with controlled temperature zones. This gradual heating prevents coking and allows complete cracking. The carbon black is collected while oil and gas are condensed and separated for recycling. The device also has features like nitrogen purging, oil collection, and water treatment.

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High-temperature pyrolysis reactor and system for producing oil and carbon black from waste tires. The reactor has a vertical tower body with a nozzle for spraying tire powder, a mixer, reaction pipe, cooling section, and flue gas outlet. The system includes a crushing, conveying, filtering, cooling, separation, and recovery system. It uses the reactor to pyrolyze tire powder into oil and carbon black. The system recycles the flue gas, filters out ash, cools the gas, separates oil, and recovers exhaust gases.

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A system for efficiently processing waste tires into valuable products using pyrolysis. The system involves a series of equipment connected in sequence. The tires are first shredded to separate the steel wire. The rubber particles are further processed in stages. First, they are crushed and separated from iron in a magnetic separator. Next, they are pyrolyzed in a reactor with agitation to fully convert them. The pyrolysis gas is cooled and condensed into pyrolysis oil. The hot coke is cooled and separated into cold coke. This cold coke is mixed with limestone and binder to form pellets. The pellets are then calcined to make calcium carbide. This allows recovering steel, rubber, oil, and carbon products from tires in a sequence of efficient and optimized processes.

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Continuous thermal cracking method for recycling waste tires that addresses the issues of low efficiency, poor safety, unstable product quality, environmental pollution, and complex oil handling in traditional tire recycling. The new method involves continuously feeding waste tires into a specialized thermal cracking machine that uses high temperatures and controlled reactions to break down the tires into valuable products like carbon black, steel, and oil. The continuous process improves efficiency, stability, and safety compared to batch processes. The oil is extracted and treated separately for further processing. The specialized thermal cracking machine also has better environmental controls and reduces pollution compared to traditional kilns.

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Continuous low temperature negative pressure cracking process for waste tires to convert them into valuable products like carbon, oil, and steel. The process involves breaking the tires, separating the steel, crushing the broken pieces further, cracking them in a furnace at low temperature and negative pressure to pyrolyze the rubber, recovering the carbon residue, and separating the oil and gas products. The low temperature and negative pressure cracking prevents burning and reduces pollution compared to traditional tire recycling methods.

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