Carbon Distribution from the Pyrolysis of Tire-Derived Fuels

Abstract

Products from the pyrolysis of tire-derived fuels (TDFs) were investigated with various analytical techniques and under various final pyrolysis temperatures and heating rates. The pyrolytic products are classified as char (solid product), pyrolysis oil (liquid), and gas. Principal functional groups of the TDF and pyrolysis oil were confirmed by a Fourier transform infrared spectrometer, coupled with attenuated total reflectance (FT-IR/ATR). The byproducts in the pyrolysis oil fraction were individually quantified using gas chromatography coupled with mass spectrometry (GC-MS). The major products are one- and two-ring methyl-substituted aromatic isomers. Byproduct formation mechanisms of TDF pyrolysis were hypothesized based on the products identified. The mechanisms for aromatic hydrocarbons formation were found to be associated with polymer degradation, methyl displacement, and the Diels−Alder reactions. Our study indicated that GC-MS coupled with FT-IR is sufficient to investigate the semivolatile and volatile organic species from the decomposition of complex polymeric materials such as tires.

Fuel-oils from co-pyrolysis of scrap tyres with coal and a bituminous waste. Influence of oven configuration

“…The reinforcing fibre also produces a considerable percentage of limonene in the FB reactor because of the rubber present in its composition. Limonene is formed from the isoprene and butadiene present in the decomposition of rubber [36,[39][40][41] . Benzene derivatives, as in the case of limonene, are more abundant in the oils from TC and TC/coal because they are formed from styrene which is derived from the SBR (styrene-butadiene rubber) contained in rubber [33].…”

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

“…Hence, waste tyres accumulate in large piles, often to be either incinerated or landfilled. When incinerated openly, they release toxic gases, which are prone to cause cancer and mutation disorder [11][12][13]. Strict pollution regulations all over the world have forced tyre incineration to operate in a closed system.…”

“…However, the heating value of tyres is lower than of diesel, gasoline and methane. Analysis involved in the determination of properties of tyres is given in Table 4 [4,13,37]. …”

Pirólise de resíduos de borrachas do setor de mineração para a produção de combustíveis: estudos em escala piloto

“…A pirólise é uma alternativa tecnológica muito promissora para o tratamento de resíduos de borracha do setor de mineração, pois produz três frações com diferentes potenciais aplicações [6][7][8][9][10] . A fração sólida, constituída de um carbono amorfo e cargas inorgânicas, pode ser usada como combustível, como carvão fino em siderurgia ou mesmo como carga para substituir negro de fumo em formulações de novas borrachas [6][7][8][9][10][11][12] .…”

“…A fração sólida, constituída de um carbono amorfo e cargas inorgânicas, pode ser usada como combustível, como carvão fino em siderurgia ou mesmo como carga para substituir negro de fumo em formulações de novas borrachas [6][7][8][9][10][11][12] . Toda a estrutura metálica dos rejeitos de borracha pode ser recuperada depois da pirólise e reutilizada na produção de novas peças (como por exemplo peneiras e moinhos) ou mesmo recicladas na produção de novos aços.…”