Upgrading of Waste Tyre Pyrolysis Oil for Obtaining Valuable Products

Pyrolysis (thermal anaerobic decomposition) of waste tyres is a sustainable recycling process. Its result is an unstable liquid product – pyrolysis oil – must be improved for economic usage. A complex microreactor system was developed for upgrading/valorizing waste tyre pyrolysis oil. Following clea...

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Published inPeriodica polytechnica. Chemical engineering. Vol. 69; no. 1; p. 78
Main Authors Korányi, Tamás I., Németh, Miklós, Ollár, Tamás, Török, Ernő
Format Journal Article
LanguageEnglish
Published Budapest Periodica Polytechnica, Budapest University of Technology and Economics 01.01.2025
Subjects
Aluminum oxide
Anaerobic processes
Catalysts
Chemical engineering
Decomposition
Diesel fuels
Environmental protection
Hydrocarbons
Hydrogen
Hydrogenation
Microreactors
Pyrolysis
Sulfur content
Temperature
Upgrading
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Summary:Pyrolysis (thermal anaerobic decomposition) of waste tyres is a sustainable recycling process. Its result is an unstable liquid product – pyrolysis oil – must be improved for economic usage. A complex microreactor system was developed for upgrading/valorizing waste tyre pyrolysis oil. Following cleaning steps (distillation, resin removal, chemical preparation reactor) pyrolysis oil was hydrogenated/hydrodesulfurized in the main reactor over NiMo/Al2O3 catalysts. Cheap self-made low active metal containing catalysts presented comparable activities with an industrial (Haldor Topsoe) catalyst in a 100 mL flow reactor at 300 °C temperature and 25–35 bar pressure. The process was optimized by changing the pressure, the liquid hourly space velocity (LHSV) and the hydrogen flow rate. The upgrading of the process for a 1000 mL volume flow system is in progress.
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ISSN:0324-5853
1587-3765
DOI:10.3311/PPch.38199