Kinetics of pyrolysis and properties of carbon black from a scrap tire

Abstract

The pyrolysis of rubber from the sidewall and tread of a passenger car tire was carried out in a nitrogen flow at a wide range of final temperatures. Derivative thermogravimetric analysis (DTG) was applied to examine the kinetics at the different process conditions of completed pyrolysis. Two characteristic stages were observed in the DTG curves. The first stage corresponded to the decomposition of processing oil, plastifier, and additives, whereas the rubber polymer was decomposed in the second stage. Several properties of the carbon black formed by the pyrolysis such as ash content, specific surface area, and pore size distribution were determined. A change of the internal structure of the rubber particle in the meso-and macroregions of the pore size was observed.

Influence of particle size and kinetic parameters on tire pyrolysis

“…Different approaches such as one or multistage decomposition model [1][2][3], iso-conversional model [4,5], and distributed activation energy model (DAEM) [6][7][8][9] for the determination of kinetic parameters of thermal decomposition were applied by the authors. However, the application of kinetic parameters in mathematical modeling of independent processes was not demonstrated.…”

Distributed activation energy modelling for pyrolysis of forest waste using Gaussian distribution

“…The most accurate and well defined approach for the modelling of biomass pyrolysis is to adopt the distributed activation energy model (DAEM) (Burnham et al, 1995;Burnham and Braun, 1999;Ferdous et al, 2002;Galgano and Blasi, 2003). The distributed activation energy model also applies to the pyrolysis of other materials, including fossil fuel, residual oils, resin chars (Zhu et al, 2009), medical waste (Koreòová et al, 2006), waste car tires (Folgueras et al, 2003), sewage sludge (Lakshmanan et al, 1991) and kerogen (Brown, 1988). DAEM has proven to be very successful in describing pyrolysis of various types of biomass under varying temperature ranges.…”

Influence of process conditions on product yield of waste tyre pyrolysis- A review

“…The standard analysis pertaining to the determination of properties of carbon black is given in Table 4 [13,23,37,41,66,67]. Carbon black, as such, has the potential to be used as fuel.…”