Pyrolysis Oil Separation for Targeted Applications

A method and apparatus for thermally decomposing waste tires and waste oil simultaneously to recover oil and reduce environmental pollution. The tires and oil are pyrolyzed at high temperatures to yield oil, gas, and carbon black. This simultaneous processing increases tire oil recovery and reduces environmental impacts compared to separate processing. The high temperature pyrolysis avoids the low oil yield issues of lower temperature tire pyrolysis. The resulting oil has similar properties to diesel. The heavy metals remain in the residue, allowing its reuse as an asphalt additive.

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Recovering valuable products from used tires through pyrolysis. The process involves pyrolyzing tire material at high temperatures (490-510°C) and low pressures (<5 kPa) to extract commercially valuable chemicals, like paraffins, naphthenes, olefins, and aromatics, from the pyrolysis oils. It also yields carbon black with high iodine adsorption numbers (130-150 mg/g) compared to regular tire carbon black. This is achieved by increasing the reactor bed temperature to 500°C while maintaining low pressure. The pyrolysis process also recovers a distillation fraction boiling below 204°C containing paraffins, naphthenes, olefins, and aromatics. This fraction contains unexpected compounds like limon

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Separating valuable chemicals from tire pyrolysis oil through distillation. The method involves fractional distillation of tire pyrolysis oil at temperatures below 204°C to isolate paraffins, naphthenes, olefins, and aromatics. This distillation fraction also contains dl-limonene, a terpene compound. Further distillation at 178°C isolates pure dl-limonene.

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Recycling waste oil into diesel fuel and other products while minimizing other outputs like sludge. The process involves soft cracking the waste oil at moderate temperatures to convert heavy components into diesel fuel. Bleaching earth is added to remove impurities. The cracked oil is further distilled to separate gases, diesel, and light oil. The diesel is further desulfurized. The process aims to maximize diesel yield while minimizing sludge and other products.

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Recycling used automobile tires by pyrolysis to extract a reusable rubber oil and carbon black. The pyrolysis involves heating the tires in an oxygen-limited atmosphere to generate recoverable products. The recovered rubber oil has similar properties to fuel oil but contains hazardous chemicals that limits its commercial viability. The carbon black has an ash content too high for tire applications. The invention aims to demonstrate the feasibility of recycling tires by pyrolysis by showing that the rubber oil can be used as a reusable rubber extender/plasticizing agent. The tests show that the rubber oil derived from tire pyrolysis can be used as a rubber extender/plasticizer at similar levels to standard extender/plasticizers, despite not being specifically engineered for that purpose.

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Extracting commercially valuable chemicals from tire pyrolysis oil by fractional distillation to isolate specific compounds like paraffins, naphthenes, olefins, aromatics, and limonene-dl. The distillation is done at temperatures below 204°C to separate these valuable chemicals from the tire oil. This allows recovering and purifying compounds like limonene-dl, a terpene typically found in essential oils, from the tire pyrolysis oil. The low-temperature distillation fraction also contains useful hydrocarbons like paraffins, naphthenes, and olefins.

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Extracting valuable chemicals and carbon black from used tires through pyrolysis. The method involves fractional distillation of tire-derived pyrolytic oils to isolate chemicals like paraffins, naphthenes, olefins, and aromatics. It also involves vacuum pyrolysis of tires at high temperatures like 500°C to produce carbon black with improved properties compared to tire pyrolysis carbon.

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Recycling shredder light goods from end-of-life vehicles by pyrolysis and separation to extract valuable components for reuse in existing chemical processes. The shredder light goods are heated to decompose into pyrolysis products like aromatics, chlorine organics, hydrogen, and carbon. These are then separated and mixed with similar waste streams from chemical processes to dilute impurities before further processing and recycling. The diluted pyrolysis fractions can then be used as feedstocks in existing chemical processes like coking, refining, and incineration. This allows recovery of the valuable components from shredder light goods instead of landfilling them.

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Efficient and economical pyrolysis process for extracting valuable oil products from scrap tires, oil shale, waste oil, and tar sands. The process involves a two-step pyrolysis using screw reactors. In step 1, solid feed like tires or shale is mixed with recycled heavy oil and pyrolyzed in a horizontal screw reactor. In step 2, the pyrolyzed solid is further pyrolyzed in an inclined screw reactor. The heavy oil from step 2 is recycled into step 1. This two-step process allows higher oil yields and better product quality compared to single-step pyrolysis. It also enables extracting bitumen from tar sands using recycled heavy oil.

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Extracting commercially valuable chemicals from tire-derived pyrolytic oils, recovering limonene-dl from the oils, and producing high-quality carbon black from tire pyrolysis. The methods involve fractional distillation of the pyrolysis oils at temperatures below 204°C to isolate paraffins, naphthenes, olefins, aromatics, and limonene-dl. For carbon black, pyrolyzing tires at 490-510°C under reduced pressure increases the iodine adsorption number.

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Treating petroleum sludge and oil residues by vacuum pyrolysis to produce pyrolytic oils suitable for reprocessing in petroleum refineries. The pyrolysis is performed under sub-atmospheric pressure and elevated temperatures to prevent gas and vapor phase cracking reactions. This increases the yield of pyrolytic oils compared to gases. The vacuum conditions prevent secondary cracking reactions that would occur at atmospheric pressure. The resulting pyrolytic oils can be further refined in petroleum refineries.

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Vacuum pyrolysis process to convert used tires into liquid hydrocarbons instead of mostly gaseous hydrocarbons. The process involves pyrolyzing the tires at 360-415°C, under sub-atmospheric pressures below 35 mmHg, and short gas residence times of a few seconds in a multi-tray reactor. This promotes formation of liquid hydrocarbons while lowering gas and solid yields compared to atmospheric pressure pyrolysis.

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A vacuum pyrolysis process for converting used tires into hydrocarbon oils and carbon by heating them at temperatures between 360-415°C under sub-atmospheric pressures. The optimal pyrolysis conditions promote maximum yield of liquid hydrocarbons from the tires rather than gasification. The process involves heating the tires in a vacuum reactor at temperatures above 360°C for short times to avoid excessive gasification. Operating at sub-atmospheric pressures greater than 35 mm Hg also promotes hydrocarbon oil formation.

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Economical process for pyrolyzing used tires to recover carbon black, fuel oil, fuel gas, and steel. The process involves indirectly heating tire feed chips in a rotating reactor filled with molten salt to pyrolyze the tires. The rotating reactor design ensures complete heat transfer and prevents sticking. The pyrolysis gases are condensed to remove tar and recycled back for further pyrolysis. This avoids coking and plugging issues. The condensed oil is separated from the carbon black. The carbon black is further cleaned and classified. The process generates all the fuel gas needed from the pyrolysis reactions, making it self-sufficient. The steel is recovered separately.

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Pyrolysis of waste like old tires to convert them into gases, oils, waxes, soot, and carbon. The waste is first cut into pieces, dried, and then heated in a vacuum reactor. The vacuum allows the volatile components to decompose and be sucked off. A driven feed device pushes the waste through the reactor. The reactor has a coaxial heating device. The feed chamber is heated to avoid condensation. The reactor connects to a sealed delivery chamber with a biased closure. A blower removes the gases from the delivery chamber.

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