Kinetics of scrap tyre pyrolysis under fast heating conditions

Application of a particle model to pyrolysis. Comparison of different feedstock: Plastic, tyre, coal and biomass

“…In fact, although the process is generally considered endothermic, the calculation of heats of pyrolysis introduces uncertainties from the system designs and the sets of reactions used. The range of heat of reaction found for the solids studied is from 100 to 500 kJ/kg [13,28,30,35], which is low enough to consider the chemical reaction thermoneutral since the principal requirement of energy during pyrolysis consists of the sensible enthalpy change of particle [13,36]. Accordingly, Eqs.…”

Emissions from the combustion of gas-phase products at tyre pyrolysis

“…It can be seen that these gases are mainly [8][9][10][11][12][13], although some differences have been found in the composition, especially in the hydrogen and CO x percentage, possibly due to the different experimental configurations. The energy necessary for the pyrolysis of rubber tyre has been estimated by means of differential scanning calorimetry (DSC) [14]. The reaction enthalpy was found to be 270 J/g approximately.…”

Effect of acid catalysts on scrap tyre pyrolysis under fast heating conditions

“…The total amount of sample that may be introduced in the quartz tube can never exceed 12 mg. The microreactor and its operating procedure have been described elsewhere [33]. The catalytic reactor is a fixed bed of 82 mm height and 5 mm internal diameter that contains the catalyst.…”