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Título

The GRAUTHERMIC-Tyres process for the recycling of granulated scrap tyres

Autor López Gómez, Félix Antonio ; Álvarez Centeno, Teresa ; Alguacil, Francisco José; Lobato Ortega, Belén ; Urien, Andrea
Palabras clave Granulated scrap tyres
Thermolysis
Recycling
Recycling
Tyre-derived-oil
Char
Fecha de publicación sep-2013
EditorElsevier
Citación Journal of Analytical and Applied Pyrolysis 103: 207-215 (2013)
Resumen[EN] The influence of thermolysis temperature (range 500–700 °C) on the products produced from granulated scrap tyres (GST) (2–6 mm Ø) in a semi-batch pilot plant that uses several fixed bed reactors in parallel (GRAUTHERMIC-Tyres® process) was examined. This pilot unit consisted of six vertical fixed bed reactors in parallel, each with a capacity of 12 kg GST. Thermolysis proceeded in a normal air atmosphere. The solid (char), liquid (tyre-derived oil [TDO]) and gaseous products generated at each temperature were characterised. The incondensable gas fraction was used to produce electricity via a gas turbine. The yields of the gas, TDO and char fractions were 15–22 wt.%, 34–46 wt.% and 39–44 wt.% respectively, values that represent major recoveries from the GST feedstock. The TDOs were mainly a mixture of aliphatic and aromatic hydrocarbons and had very high GCVs (41–43 MJ/kg), higher than those of conventional liquid fuels. A large increase was seen in the polycyclic aromatic hydrocarbon content above 550 °C. The non-condensable gases obtained had a high GCV value (64–83 MJ/Nm3), and produced 4.1–6.5 kWh electricity/g of GST in a gas turbine. The chars had a GCV of 27–28 MJ/kg, high ash (17–21 wt.%) and zinc contents, and an essentially macroporous texture with a low BET surface area (46–78 m2/g). The thermolysis of GSTs with co-generation of gases by the GRAUTHERMIC-Tyres® method would appear to be a viable means of valorising GST.
Versión del editorhttp://dx.doi.org/10.1016/j.jaap.2012.12.007
URI http://hdl.handle.net/10261/90523
DOI10.1016/j.jaap.2012.12.007
ISSN0165-2370
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