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Distillation of granulated scrap tires in a pilot plant

AuthorsLópez Gómez, Félix Antonio ; Álvarez Centeno, Teresa ; Alguacil, Francisco José; Lobato Ortega, Belén
KeywordsScrap tires
Tire-derived oil
Issue DateJun-2011
CitationJournal of Hazardous Materials 190 (1-3): 285-292 (2011)
Abstract[EN] This paper reports the pyrolytic treatment of granulated scrap tires (GST) in a pilot distillation unit at moderate temperature (550 °C) and atmospheric pressure, to produce oil, char and gas products. Tire-derived oil is a complex mixture of organic C5–C24 compounds, including a very large proportion of aromatic compounds. This oil has a high gross calorific value (∼43 MJ kg−1) and N and S contents of 0.4% and 0.6%, respectively, falling within the specifications of certain heating fuels. The distillation gas is composed of hydrocarbons; methane and n-butane are the most abundant, investing the distillation gas with a very high gross calorific value (∼68 MJ N m−3). This gas is transformed into electric power by a co-generation turbine. The distillation char is mostly made of carbon but with significant inorganic impurities (∼12 wt%). The quality of the solid residue of the process is comparable to that of some commercial chars. The quantity of residual solids, and the qualities of the gas, liquid and solid fractions, are similar to those obtained by conventional pyrolytic treatments of waste tires. However, the simplicity of the proposed technology and its low investment costs make it a very attractive alternative.
Publisher version (URL)http://dx.doi.org/10.1016/j.jhazmat.2011.03.039
Appears in Collections:(INCAR) Artículos
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