A multi-step approach for studying the feasibility of energy valorization of worn out tyres is presented. First of all, a tyre sample was characterized by elemental analysis for the determination of the content of C, H and other elements, and for the evaluation of its heat of combustion. Pyrolysis of the same tyre sample was then studied by TG-MS/TG-GC-MS analyses and lab-scale reactor tests based on the results of the previous analyses. The thermal decomposition of the waste tyre produced a gaseous phase (20%wt of the tyre mass), a tyre pyrolysis oil (TPO, 40% wt) and the solid char (40% wt). Both tar and char were characterized by elemental analysis and heat of combustion determination. TPO presented HHV and LHV of 49.5 and 46.7 MJ/kg, while the HHV and LHV for solid char were 34.7 and 33.7 MJ/kg, respectively. Finally, a case of process application was studied as a last step, taking into account the features of waste tyres combustion plants and pyrolysis processes. The overall approach can be used for generating all the data necessary for design purposes.
Energy valorization of tyres waste: A multi-step approach
Rada, Elena Cristina;Ragazzi, Marco
2012-01-01
Abstract
A multi-step approach for studying the feasibility of energy valorization of worn out tyres is presented. First of all, a tyre sample was characterized by elemental analysis for the determination of the content of C, H and other elements, and for the evaluation of its heat of combustion. Pyrolysis of the same tyre sample was then studied by TG-MS/TG-GC-MS analyses and lab-scale reactor tests based on the results of the previous analyses. The thermal decomposition of the waste tyre produced a gaseous phase (20%wt of the tyre mass), a tyre pyrolysis oil (TPO, 40% wt) and the solid char (40% wt). Both tar and char were characterized by elemental analysis and heat of combustion determination. TPO presented HHV and LHV of 49.5 and 46.7 MJ/kg, while the HHV and LHV for solid char were 34.7 and 33.7 MJ/kg, respectively. Finally, a case of process application was studied as a last step, taking into account the features of waste tyres combustion plants and pyrolysis processes. The overall approach can be used for generating all the data necessary for design purposes.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.