Pyrolysis for PET Bottle Chemical Recycling

Indirectly heated rotary kilns that can tightly control the temperature and gas environment inside the kiln for processing organic and inorganic feedstocks without contacting the process gas. The kiln is enveloped in a heat shroud and heated externally. It allows precise temperature control along the kiln length, enabling reactions like drying, pyrolysis, gasification, calcining, roasting, and thermal decomposition. The kiln can operate co-currently or counter-currently, with feed and product flows in opposite directions, or in batch or continuous modes. This provides versatility for processing a variety of waste materials into gaseous and solid products.

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The composition of solid residues-products thermal pyrolysis plastic waste (polyethylene terephthalate (PET), polypropylene (PP)) at 350-550 C was studied by Fourier transform infrared spectroscopy (FT-IR) and differential analysis (DTA) methods. On the basis transition band (T%) absorption Abs parameters were calculated. It observed that peaks in initial samples appear to change depending on temperature, with appearance new higher temperatures. during PET polymer waste, a number bands wavenumber 1692, 1670, 1262, 755, 694, 464 cm-1 occurred above 450 C. would seem for 2923, 1453, 846 are equal zero. 550 C, only three wavenumbers 1686, 1062 707 observed. Similarly, PP same one peak (1092 cm-1) is residues processes taken calculated 13.6 0.6%, respectively, PP. data shows from wastes have structure similar charcoal.

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The emergence of plastics as an essential item in modern society has led to the problem accumulating plastic waste. Accordingly, research is being conducted around world reduce production new and develop technologies recycle waste plastics. Among existing recycling technologies, oil possible through pyrolysis, but pyrolysis produced this way a wide carbon range (more than C5C25), very high olefin content (the presence aromatic compounds), resulting calorific value limited its application range. In case obtained by pyrolyzing containing Cl, there concern about corrosion reactor. it diversify use suppressing Cl removal well upgrading cracking. Therefore, study used red mud mixed with series adsorbents for upgrade. adsorbent was physically binder (kaolin or methylcellulose) activated carbon, results before after reaction were confirmed basic characteristic analysis.

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ABSTRACT Over 430 million tons of plastic were produced in the year 2022, and 2/3rd them shortterm use. Besides good successes recycling PET (No 1) HDPE 2), most end up landfills or waterways oceans. Even by mixing with virgin has problems, as they contain large amounts pharmaceuticals other undesirable chemicals. One desirable ways to chemically recycle a is take it back its starting monomers, which can then be repolymerized into plastica circular recycling. A polyester (PET) polymer hydrolyzed diacids diols, after cleaning, polymerized same characteristics original polymer. There are catalytic pyrolytic produce naphtha (C 4 C 7 ) that material for ethylene propylene repolymerized PE PP. Inductively coupled depolymerization can, under right conditions (Eco Fuel Technology, US Patent 9 505 901), all way monomer (8590 + % yield). Mixtures reacted, resulting ethylene, propylene, styrene separated get pure monomers repolymerized. This will true chemical this paper propose scale process industrial scale. cycle repeated indefinitely itself does not add any CO 2 .

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Preparing activated carbon from waste PET plastic with improved yield using self-pressurized pyrolysis and activation methods. The process involves grinding the PET into small pieces, carbonizing them in a pressurized reactor at high temperature under nitrogen, then mixing the pyrolyzed material with potassium hydroxide (KOH) and activating through a thermochemical reaction. This yields activated carbon with improved carbon dioxide adsorption compared to conventional PET pyrolysis methods.

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To tackle growing resource and environmental challenges, closed-loop chemical recycling of waste PET is gaining significant attention. Methanolysis demonstrates industrial potential due to the ease separation purification its depolymerization product, dimethyl terephthalate (DMT). However, conventional methanolysis processes for typically require harsh conditions (>200 C 24 MPa), highlighting need more efficient milder methods. In this work, leveraging Hansens solubility parameter theory, a bio-based solvent gamma-valerolactone (GVL) was introduced construct binary mixed system, enabling highly PET. Through systematic optimization reaction conditions, an in-depth analysis effects various factors on efficiency kinetics conducted. The incorporation GVL markedly enhanced compatibility between PET, thereby significantly improving while effectively lowering temperature pressure. Complete can be achieved within 2 h at 150 under pressure 0.9 MPa, with DMT yield up 97.8%. This GVL/methanol system exhibits higher efficiency, substantial advantages in terms impact energy consumption... Read More

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A porous composite material that can rapidly heat to high temperatures when exposed to microwaves and be used for microwave pyrolysis, recycling, and catalysis of organic compounds. The material is made by supporting carbon on an inorganic porous framework with pore sizes between 0.2 and 1000 micrometers. The carbon-loaded framework generates electric arcs in the microwave field, allowing rapid heating of organic materials for pyrolysis and recycling applications. The composite also has potential for high-temperature catalysis and waste treatment.

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<title>Abstract</title> The PET waste bottle consists of and PP plug. We investigated the catalytic pyrolysis kinetics bottled using HY-FAZ obtained by activating CFA with acid alkali. effect coal fly ash was thermal analysis without at 20 % comparing degree decomposition. Pyrolysis occurred in temperature range 623-753 K, exhibited activity that accelerated process waste, increased yield volatile gas 14.2 %, decreased solid residue 14.14 %. decomposition catalyst studied TG DTG data 313-923 K N₂ atmosphere four different heating rates (5, 10, 15 Kmin^-1). analyzed five methods (FR, FWO, KAS, STK DAEM). reaction carried out two stages, average activation energy (E_a) values first second stage reactions being 177.3 kJmol^-1 182.9 kJmol^-1, respectively.

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A process to produce recycled content monoethylene glycol (MEG) by hydrocarboxylating formaldehyde with recycled carbon monoxide (r-CO), esterifying the glycolic acid with recycled methanol (r-methanol), and hydrogenating the methyl glycolate with recycled hydrogen (r-H2) to get MEG with recycled content. Alternatively, the process involves hydroformylating formaldehyde with recycled syngas (r-syngas) and recycled hydrogen (r-H2) to get MEG with recycled content. The process allows converting waste plastic into MEG by pyrolyzing the plastic to provide recycled carbon monoxide, formaldehyde, methanol, and hydrogen feedstocks for the MEG synthesis.

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Abstract This paper focuses on the green recycling technology of Polyethylene Terephthalate (PET), which, as most widely consumed textile fiber globally, has become a key area in waste research. While traditional acidcatalyzed methods have demonstrated value PET depolymerization, harsh acidic reaction conditions pose significant technical challenges, including catalyst deactivation and severe equipment corrosion. Based principles chemistry engineering, this study innovatively develops temperaturesensitive heteropolyacid catalyst, (HOCH 2 CH N(CH 3 ) x H 3 PW 12 O 40 (Ch , = 1, 2, 3), synthesized by ion exchange between choline chloride phosphotungstic acid. Under optimized (200 C, 7 h, solidliquid ratio 1:10, 0.2 g catalyst), achieves 99% conversion rate 96% recovery terephthalic acid (rTPA), with product purity reaching 99.7%. Kinetic studies based firstorder mechanisms reveal an apparent activation energy E 86.72 kJ/mol for hydrolysis reaction. Notably, through temperature regulation crystallization techniques, used Ch 3x can be easily recovered from product, ma... Read More

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Due to their various chemical structures, long chain polymeric compositions, and thermal/decomposition behavior of plastic waste (PW), it is challenging recycle into hydrocarbon fuels. Thus, necessary carry out proximate ultimate because this will enable proper design a feasible pilot plant for management (PW). In study LDPE (low-density polyethylene), HDPE (high-density polyethylene terephthalate (PET), polypropylene (PP), polystyrene (PS), polyvinyl chloride (PVC) were the evaluated PW samples. accordance with ASTM standards E790, E897, E830, respectively, analyses PW's moisture content, volatiles, ash content carried out. A Vario Micro Element Analyzer was used determine analysis. To how composition (PW) changed temperature time, mass loss measured using thermogravimetric analyzer (SII 6300 EXSTAR, Seiko Instruments Inc., Tokyo, Japan. bomb calorimeter (ASTM D 5865-85), which measures heat produced at constant 298 K from burning dry sample, experimentally calculate heating value (HV). The results obtained revealed that all samples had percentage volatile matter ranging 88.66 99.57... Read More

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Developing highly efficient and selective catalysts for chemical recycling upcycling of plastic waste is essential establishing a sustainable plastics economy reducing environmental impact. Here, we report novel tetranuclear titanium catalyst that enables transesterification reaction esters polyesters. Detailed experimental computational studies have revealed bititanium framework facilitates dual activation mechanism, activating both alcohol ester simultaneously, thereby significantly enhancing the process. This demonstrated exceptionally high activity in methanolysis poly (ethylene terephthalate) (PET) with an up to 1.9 107 gPET molTi1 h1 at 0.005 mol % loading, producing polymerizable dimethyl glycol monomers. Additionally, it effectively catalyzed repolymerization recovered monomers, yielding original polyester molecular weight achieving ideal circular commodity Furthermore, this can also be utilized upgrading PET via 1,4butanediol, polybutylene adipate, poly(tetramethyene ether glycol), engineering plastic, biodegradable polyester, thermoplastic elastomer, respec... Read More

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Chemical depolymerization and recycling of poly(ethylene terephthalate) (PET) constitute a sustainable, resource-efficient, environmentally beneficial approach, which requires the development efficient heterogeneous catalysts. Herein, polyoxometalate(POM)-based zinc-organic networks were synthesized as dual-site acid catalysts for alcoholysis PET into value-added terephthalic (TPA) product, with formulas [Zn2(2-Cl)(H2O)2(DTAB)3][PW12O40]4H2O (1), [Zn2(DTAB)4][SiW12O40]4H2O (2), [Zn2(H2O)4(DTAB)2.5][HBW12O40]8H2O (3) (DTAB = 1,4-di(4H-1,2,4-triazol-4-yl)benzene). Structural analysis showed that compounds 1 2 composed 2D Zn-ligand embedded POM clusters in an "egg-in-a-box" manner compound 3 consisted 3D POM-based host-guest framework constructed by {Zn2(H2O)4(N-N)3} units [HBW12O40]4- clusters. Three incorporate Zn2+ Lewis centers heteropolytungstate clusters, having strength order > 2. When employed catalysts, three exhibited catalytic performance TPA >92% conversion rate >94% selectivity along excellent recyclability structural stability. This work offers novel perspective up... Read More

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Raw material supply system and method for pyrolyzing waste plastic containing PVC and PET while treating the chlorine and acid contaminants. The system involves feeding slaked lime to the plastic at a ratio of 1-4 moles lime to total PVC and PET moles. This mixture is heated to dechlorinate the PVC and hydrolyze the PET. The lime-melted plastic is then supplied to the pyrolysis furnace. This pre-treatment removes chlorine from PVC and breaks down PET acidic components to prevent fouling and corrosion in the pyrolysis furnace.

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Continuous, efficient conversion of waste plastics into hydrocarbon products like oil, gas, and char using a rotatable kiln reactor, condensers, and separators. The kiln has features like sweeping and lifter walls that aid mixing and material flow. The condensers cool and separate the products. The separators further separate the oil from solid char. This allows continuous, high-yield conversion of plastics with efficient heat transfer and fouling mitigation compared to batch processes.

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A fluidized bed reactor with a rotating shaft and blades inside the reactor chamber to create a mechanically agitated, adjustable density fluidized bed without vibration or gas injection. This enables processing organic materials with lower retention times due to the high-fluidized bed density. The rotating blades also provide mechanical separation of dust particles from the gas stream. The reactor is flexible for multiple processes like pyrolysis, gasification, combustion, catalysis, and heat exchange. The rotating shaft drive is controlled based on reactor and separator chamber sensor feedback.

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A method and apparatus for converting plastics into hydrocarbon products using pyrolysis in a dual fluidized bed reactor. The method involves preheating and shearing the plastic feed in an extruder to reduce viscosity for atomization and dispersion in the reactor. The plastic feed is then injected into the reactor where it pyrolyzes into hydrocarbons. The reactor has a cyclonic separator to remove the hydrocarbon vapors from the char and heat carrier. The char is combusted in a separate bed to regenerate the heat carrier. This prevents hydrocarbon loss and allows higher throughput. The cyclone, stripper, and regenerator are all designed to handle corrosive plastic contaminants.

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Continuous pyrolysis system for recycling waste plastics that avoids issues like sticking, coking, and low yields. The system uses a stirring assembly inside the pyrolysis reactor with a rotating shaft and stirring rods to prevent plastic from accumulating. The stirring breaks up and removes molten plastic before it adheres to the reactor walls. The system also has multiple connected pyrolysis units that allow continuous operation without stopping for material changes. The final unit has a separation unit to separate the pyrolysis products into oil, gas, and solid fractions.

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Thermochemical conversion of waste plastics into useful products like petrochemicals, fuels, and asphalt. The process involves melting the waste plastic in a tank and then pyrolyzing it in a reactor. The melting step removes water and oxygen to prevent coking. The pyrolysis is done at lower temperatures to produce pitch instead of tar. This allows higher oil yield. The pyrolysis oil is separated into gases, light oil, medium oil, and heavy oil fractions. The system uses controlled heating and stirring to optimize conversion and prevent coking.

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Chemical recycling of waste plastics with lower carbon footprint by using waste heat integration. The process involves liquefying the waste plastics, pyrolyzing them, separating the pyrolysis products, and then feeding some of the separated pyrolysis oil back into the pyrolysis zone. This closes the loop and reduces the need for external fuel to heat the plastics. The pyrolysis effluent is also used to indirectly heat the pyrolysis oil, further reducing external fuel. The process can be operated at high pressures (>200 psig) to enable efficient heat transfer.

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Chemical recycling of waste plastics with lower carbon footprint by integrating heat recovery from the pyrolysis flue gas to liquefy and further heat the waste plastics. The process involves pyrolyzing liquefied waste plastics, recovering heat from the pyrolysis flue gas to liquefy the waste plastics, and further heating the liquefied plastics using flue gas heat. This reduces the need for fossil fuel combustion to provide heating.

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A chemical recycling process with lower carbon footprint by integrating heat recovery and utilization across the recycling steps. The process involves liquefying waste plastic, pyrolyzing it, cracking the pyrolysis oil, and generating steam. Heat from pyrolysis flue gas, cracker flue gas, quench fluid, residual steam, and combustion flue gas is used to preheat the initial feed streams like the waste plastic, combustion fuel, and combustion air. This reduces the need for external fossil fuel combustion for heating, thereby lowering CO2 emissions.

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Two-step plastic recycling process to convert waste plastics into monomers like ethylene and propylene. The process involves pyrolyzing the plastics at 300-600°C in a first stage to produce low-temperature pyrolysis products. Then, a portion of those products is heated to 600-1100°C in a second stage to further pyrolyze into monomers. This two-step process allows converting plastics into monomers with higher yields compared to single-stage high-temperature pyrolysis.

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A process for converting plastic waste into liquid hydrocarbons with improved yield and efficiency compared to existing methods. The process involves two steps: 1) thermocatalytic degradation of the plastic in a reactor at high temperatures to produce a mixture of gases and liquids, and 2) condensation of the gases to separate and collect the liquid hydrocarbons. A key feature is recycling a portion of the liquid slurry from the reactor back into it, rather than discharging the entire slurry. This improves hydrocarbon yield and reduces the amount of solid charcoal that forms. The process can be scaled up to commercial levels for converting large amounts of plastic waste into valuable liquid hydrocarbons.

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Waste plastic pyrolysis apparatus that improves efficiency and productivity of low-boiling pyrolysis oil production. The apparatus has a melting section, thermal decomposition section, and reactive distillation column. Waste plastic is melted, rapidly pyrolyzed, and decomposed using recycled high-temperature gases. Uncondensed gases separate and recirculate to maximize thermal contact, increase reaction rates, and further decompose unreacted materials. This avoids carbonization and reduces energy consumption compared to separate units.

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A containerized plastic waste pyrolysis plant that can efficiently convert plastic waste into hydrocarbon fuels like diesel. The plant is designed to be modular, portable, and scalable for deploying in various locations. It uses containerized units with pyrolysis reactors, flash distillation, fractionation, and scrubbing steps to convert plastic waste into hydrocarbon fuels. The plant can handle smaller feed sizes than fixed plants, making it suitable for mobile deployment. The containerized design allows easy shipping and assembly, while the modular units can be combined in series or parallel to scale output. The plant can also generate electricity from the pyrolysis gas byproducts.

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Process for making recycled content hydrocarbon products from waste plastic pyrolysis vapor. The process involves co-locating waste plastic pyrolysis and cracking facilities. The pyrolysis vapor is withdrawn from the pyrolysis facility at a certain temperature, then introduced into the cross-over pipe between the cracker furnace sections. This prevents condensation since the vapor temperature is higher than the cracker furnace sections. By combining and cracking the vapor with the cracker feed, it enhances energy efficiency and reduces waste heat losses compared to separate facilities. The vapor introduction rate is adjusted as cracker feed rate changes to maintain furnace heat balance.

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Simultaneous pyrolysis of mixed plastics containing PET (polyethylene terephthalate) and polyolefin plastics like PP and PE to efficiently recycle complex plastic waste streams. The method involves pyrolyzing the mixed plastic feed at high temperatures in the presence of steam and nitrogen. The pyrolysis converts the mixed plastics into terephthalic acid (TPA) and olefin monomers like ethylene and propylene. The high H/C ratio of PET and the acid catalytic effect of TPA in the mixed plastic feed synergistically enhance the pyrolysis yield of TPA and olefins compared to pyrolyzing the plastics separately.

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Process for recycling waste plastic into hydrocarbons and a plant for implementing it. The process involves depolymerizing waste plastic in a heated reactor filled with molten salt to break down the polymer chains into gaseous hydrocarbons. The plant has features like scraper blades to prevent floating of plastic, mixing to dissolve, and jacket heating with salt circulation. The hydrocarbons are fractionated into fuels and gases. The plant also has steps to prepare the plastic feed, remove contaminants, and reduce size. This allows recycling of difficult-to-recycle waste plastics into valuable products.

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Converting waste plastics into high-value hydrocarbon products through steam cracking of the pyrolysis effluent. The process involves pyrolyzing plastics at high temperatures around 450°C to obtain a pyrolysis effluent stream. This stream is then steam cracked to separate out C5 and C4 hydrocarbon streams. Quenching the pyrolysis effluent stream before steam cracking reduces oligomerization and preserves valuable light olefins. The steam cracking can be done in parallel with plastic feed steam cracking to utilize the furnace capacity.

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Recycling composite plastics like packaging materials, batteries, and fiber-reinforced plastics by pyrolysis in a system using molten metal as the pyrolysis medium. The feedstock is charged onto a molten metal surface maintained at 160-650°C in an oxygen-free atmosphere. Vapors are removed while keeping the pressure above atmospheric, and solids are removed from the metal surface. This allows fast, efficient pyrolysis with direct heat transfer to the plastic. The molten metal prevents contamination of the products. The waxes and oils are condensed from the vapors.

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Recycling waste plastics through pyrolysis and partial oxidation gasification to produce recovery component syngas. The process involves pyrolyzing waste plastics to form a pyrolysis effluent with a high carbon content residue. This residue is then gasified in a partial oxidation process using oxygen to produce syngas. The syngas can be further processed into useful chemicals and fuels. This closed-loop recycling of waste plastics reduces environmental impact compared to incineration or landfilling.

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A continuous waste plastic pyrolysis system that efficiently extracts oil and gas from waste plastic. The system uses a multi-stage pyrolysis process with automated adjustment of operating conditions based on waste plastic quality. It involves a waste input unit, pyrolysis reactor, residue treatment, oil/gas separation, and storage. The multi-stage pyrolysis allows gradual heating to prevent explosion. Automatic stop/start based on waste quality prevents overheating. The multi-stage separation efficiently extracts oil and gas.

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Large-scale production of recycled content feedstocks and products using pyrolysis of waste plastics and industrial waste. The system involves shredding recycled plastics, blending with industrial waste, and pyrolyzing in stages at increasing temperatures. This improves flowability and homogenization. The pyrolysis oil can be further processed into valuable chemicals like ethylene oxide. Recovered components from pyrolysis and other sources can be added to products like ethylene oxide to increase recycled content.

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A method to prepare terephthalic acid (TPA) from waste polyethylene terephthalate (PET) using water-assisted pyrolysis that reduces carbon black formation compared to traditional methods. The process involves pyrolyzing PET in the presence of water vapor instead of oxygen or air. This water-assisted pyrolysis step converts PET into TPA, benzoic acid, and carbon black. The carbon black yield is significantly lower compared to pyrolysis without water. The water-assisted pyrolysis conditions include using a mixed carrier gas containing water vapor, and a fixed bed reactor. The lower carbon black formation enables higher TPA yields from PET waste.

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A method to recycle waste plastics into useful products through pyrolysis. The method involves treating the waste plastic feedstock before pyrolysis to address issues like heterogeneity and contaminants. Steps like shredding, separating, mixing, and co-feeding with liquids improve pyrolysis efficiency for variable waste streams. This allows recycling of post-consumer and post-industrial plastics together without sorting. The recycled pyrolysis oil can be used to make new plastics or chemicals like ethylene oxide. The process enables scalable closed-loop recycling of mixed waste plastics.

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Plastic-to-oil plant for converting plastics into petrochemical products using a cracking reactor that provides efficient, energy-efficient, and resource-efficient plastic recycling. The reactor design promotes fast and efficient heating and mixing of the plastic feed. The plant has separate sections for pyrolysis, combustion, and product separation. The char and particles from pyrolysis are cycled back to the reactor to provide stirring and heat transfer. This reduces the need for mechanical mixing. The combustion air is preheated using flue gas. The pyrolysis gases are also preheated before distillation. This recovers heat from the combustion and pyrolysis steps to improve efficiency.

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Chemical recycling of mixed waste plastics using pyrolysis and partial oxidation gasification to produce recycled-content syngas. The method involves pyrolyzing waste plastics to generate a pyrolysis effluent with a high carbon content residue. This residue is then fed to a partial oxidation gasifier along with oxygen to further convert it into syngas. This two-step process allows efficient recycling of mixed waste plastics into valuable syngas compared to direct pyrolysis of the feedstock. The syngas can then be used as a feedstock for chemical production.

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Process and device for producing oil by pyrolysis of polymer waste that addresses issues like corrosion, coking, and inefficient heat transfer during pyrolysis of polymer waste. The process involves multi-stage heating, inert gas contacting, and bed material recycling to improve heating efficiency, prevent coking, and enable high-temperature oil and gas recovery. The device has a multi-stage fixed bed pyrolyzer with heat exchangers, nitrogen circulation, and extruder for dechlorination. The extruder removes chlorine and acid gases from PVC and PETE waste before pyrolysis to prevent corrosion. The multi-stage heating and nitrogen circulation improve heat transfer and reduce energy consumption. The bed material recycling improves reaction efficiency and prevents feed blockage.

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Continuous pyrolysis of waste plastics and combustible waste to produce high-quality regenerated oil without fine dust and wastewater discharge. The system involves compressing, transporting, and pyrolyzing the waste in a sealed system to prevent air ingress. Carbonized byproducts are continuously moved forward. Heat from pyrolysis is reused. Oil vapor is condensed and reused. The pyrolysis furnace expands/contracts to prevent damage. This allows continuous operation without interruptions for loading/unloading.

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Making recycled products from waste materials while minimizing negative environmental impacts. The process involves pyrolyzing recycled waste to produce a low aromaticity, low density pyrolysis oil. This oil can then be used as a feedstock to make recycled products like ethylene, ethylene oxide, and propylene oxide. The recycled products have associated recycled content values. By pyrolyzing recycled waste first, it allows processing of a wider range of waste materials and avoids the need for expensive physical sorting. The low aromaticity pyrolysis oil enables further processing without requiring additional downstream treatments. The recycled content values can be apportioned among the products to match the recycled content in the feedstocks.

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Decentralized system for recycling plastic waste that cannot be directly recycled into material or energy. The system involves a portable pyrolysis device that heats and agitates the plastic waste to break it down into usable oils, waxes, and gases. The device has a rotating paddle that moves the plastic as it pyrolyzes. This prevents clogging. The pyrolysis vapors are condensed into oils and the gases are discharged. The condensation process removes waxes and separates out solid residue. The condensates can be used as oils, while the gases are discharged.

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Clean conversion, disposal, and energy utilization of mixed waste plastics through a process based on pyrolysis and gasification mechanism. The process involves pre-melting the mixed waste plastics to make their properties more consistent for pyrolysis and gasification. It uses a light fluidized bed made of quartz sand and limestone to carry out pyrolysis and gasification at higher temperatures. Air and water vapor are supplemented as the gasification medium to promote reaction and avoid coking. The process converts the waste plastics into cleaner, lighter oil and gas products that can be used as fuels.

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Low-temperature pyrolysis device for extracting renewable fuel oil from mixed waste synthetic resins like plastics and Styrofoam. The device has features to minimize pollution, improve efficiency and prevent overloading. It includes separate heating furnaces for pyrolysis, weight sensors to prevent overfilling, and a gas processing unit to treat harmful gases before release. This allows effective odor and pollution control compared to conventional devices. The furnace temperature is controlled to melt specific waste types and reduce impurities in the oil.

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Waste plastic pyrolysis apparatus for efficiently converting waste plastics into usable products like fuel gas. The apparatus has a combustion furnace, heating furnace, and supply unit. The combustion furnace receives waste plastic. The heating furnace surrounds it to pyrolyze the plastic. The supply unit feeds plastic into the furnace. The design features include a transfer pipe with a conveyance cylinder to push the plastic into the furnace, a purge chamber with nitrogen injection to prevent blockages, and a rear conveyance cylinder to move pyrolyzed plastic forward. The furnace can also rotate to promote mixing.

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A process and plant for converting waste plastic into fuel products using pyrolysis. The process involves heating waste plastic to form molten plastic, then pyrolyzing it at high temperatures to produce a mix of gases, oils, and char. This mixture is separated into individual fuel products using centrifuges, catalytic reactors, and scrubbers. The gases can be burned as fuel, the oils refined into fuel oil, and the char used as feedstock in other processes. The plant layout includes equipment like extruders, pyrolysis reactors, catalytic towers, centrifuges, and scrubbers.

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A recycling and recovering system for plastic waste that closes the loop of the plastic lifecycle by converting the waste into valuable fuel products. The system involves degrading the plastic waste at high temperatures using a catalyst. This breaks down the plastic into gases, oils, waxes, and other byproducts. The byproducts are then further processed to extract the fuel products like flammable hydrocarbon gas and liquid fuels. This allows recycling and reuse of the plastic waste instead of landfilling or incineration.

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A process for converting mixed waste plastics into valuable chemicals like petrochemicals. The process involves pyrolyzing the plastics to generate gaseous and liquid streams. The gaseous stream is further processed to make petrochemicals. The liquid stream is separated into a high aromatics content stream and a low aromatics content stream. The low aromatics content stream is sent to a hydrocracking unit. The hydrocracker feed is enhanced by adding the low aromatics content stream from pyrolysis, reducing metal and sulfur content, maintaining dissolved asphaltenes, and lowering viscosity.

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A compact, energy-efficient apparatus for converting waste plastics into fuel without catalysts, suitable for local recycling of plastic waste from manufacturing plants. The system uses a vertical two-stage reactor with a connection conduit between the sections. The first reactor section is heated to pyrolyze the plastics into gas. The second section is inclined and evacuated to allow gravity transfer. Gases exit and condense into fuel. The reactor sections have individually controllable heaters based on gas temperature. This allows optimized conversion without overheating. The system also has temperature sensors, vacuum source, and auger feeders.

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Pyrolysis processing of plastic waste to recover material and energy from waste plastic. The process involves thermal decomposition of plastic waste in a reactor at high temperatures to break down the polymer chains. The gaseous products condense into a liquid fraction containing hydrocarbons, alcohols, ethers, esters, etc. This liquid product can be used as fuel or lubricant. The remaining solid ash can be disposed as non-hazardous waste. The process is done in a specialized installation with a feeder, reactor, condenser, etc.

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