Article
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Preserved in Portico This version is not peer-reviewed
Pyrolysis of Tyres Waste in Fixed Bed Reactor
Version 1
: Received: 7 October 2023 / Approved: 7 October 2023 / Online: 8 October 2023 (02:18:43 CEST)
A peer-reviewed article of this Preprint also exists.
Papuga, S.; Djurdjevic, M.; Tomović, G.; Vecchio Ciprioti, S. Pyrolysis of Tyre Waste in a Fixed-Bed Reactor. Symmetry 2023, 15, 2146. Papuga, S.; Djurdjevic, M.; Tomović, G.; Vecchio Ciprioti, S. Pyrolysis of Tyre Waste in a Fixed-Bed Reactor. Symmetry 2023, 15, 2146.
Abstract
This paper presents the results of investigations on the pyrolysis of tyres waste in a laboratory fixed bed batch reactor. The results regarding the influence of either the reaction temperature (425, 450, 475, and 500 °C) and the flow of the inert gas (0, 100, 300, and 500 mL/min) on products yield (referred to pyrolysis of waste tyres) are also considered and discussed. On the basis of the above mentioned findings, the most appropriate experimental conditions were selected to contribute to a higher yield of pyrolysis oil. The sample of pyrolysis oil obtained from the experiments carried out in the selected optimal conditions (reaction time 120 min, temperature 450 °C and the inert gas flow of 100 mL/min) was subjected to a calorimetric and infrared spectroscopy analysis. The results of IR spectroscopy analysis on this oil sample showed the following content in percentages (by mass): 32.59 % of aromatics, 51.06 % of paraffins and 16.35 % of naphthenes. The pyrolysis oil so obtained has a high calorific value (42 MJ/kg) and a low sulfur content (0.41 % by mass), which makes it an excellent raw material for energy production. The solid product, i.e. pyrolysis char or carbon black, has the potential to be used as an adsorbent or catalyst support after an activation process, which changes its irregular pore structure to a more voluminous one, making the overall structure more crystalline and symmetrical. Pyrolysis coal has a fairly high calorific value of 31 MJ/kg, when compared to typical solid fuels, so it can be used in energy production or as a feedstock for the gasification process.
Keywords
pyrolysis; fixed bed reactor; tyres waste; pyrolysis oil; carbon black
Subject
Chemistry and Materials Science, Polymers and Plastics
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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