Pyrolysis of low-density polyethylene in an innovative batch pilot plant, with a hydraulic guard ensuring a safe process, was performed. The influence of process temperature on yield, distribution and composition of products was investigated. The oil/waxes were analyzed by gas chromatography coupled mass spectrometry, while pyrolysis gas was monitored online during the process by micro-gas chromatography. Pyrolysis were carried out at 450, 500, 550 and 600 °C. Results obtained show that low temperatures yield a greater amount of oil/waxes, and a gas enriched in carbon oxides and C3+ hydrocarbons. At higher temperatures, the gas fraction, riche in methane and hydrogen, is predominant over liquid products. This process has proved to be a versatile way to recover polyethylene wastes into valuable oils (rich in aliphatic and simple aromatic hydrocarbons) or gas, to be used as petrochemical feedstock or fuel, thus providing a sustainable method for material and energy recovery of waste packaging.

Zattini, G., Leonardi, C., Mazzocchetti, L., Cavazzoni, M., Montanari, I., Tosi, C., et al. (2017). Pyrolysis of low-density polyethylene. Cham : Springer Science and Business Media Deutschland GmbH [10.1007/978-3-319-57078-5_46].

Pyrolysis of low-density polyethylene

ZATTINI, GIORGIO;LEONARDI, CHIARA;MAZZOCCHETTI, LAURA;MONTANARI, IVAN;Benelli, Tiziana;GIORGINI, LORIS
2017

Abstract

Pyrolysis of low-density polyethylene in an innovative batch pilot plant, with a hydraulic guard ensuring a safe process, was performed. The influence of process temperature on yield, distribution and composition of products was investigated. The oil/waxes were analyzed by gas chromatography coupled mass spectrometry, while pyrolysis gas was monitored online during the process by micro-gas chromatography. Pyrolysis were carried out at 450, 500, 550 and 600 °C. Results obtained show that low temperatures yield a greater amount of oil/waxes, and a gas enriched in carbon oxides and C3+ hydrocarbons. At higher temperatures, the gas fraction, riche in methane and hydrogen, is predominant over liquid products. This process has proved to be a versatile way to recover polyethylene wastes into valuable oils (rich in aliphatic and simple aromatic hydrocarbons) or gas, to be used as petrochemical feedstock or fuel, thus providing a sustainable method for material and energy recovery of waste packaging.
2017
Smart Innovation, Systems and Technologies
480
490
Zattini, G., Leonardi, C., Mazzocchetti, L., Cavazzoni, M., Montanari, I., Tosi, C., et al. (2017). Pyrolysis of low-density polyethylene. Cham : Springer Science and Business Media Deutschland GmbH [10.1007/978-3-319-57078-5_46].
Zattini, Giorgio; Leonardi, Chiara; Mazzocchetti, Laura; Cavazzoni, Massimo; Montanari, Ivan; Tosi, Cristian; Benelli, Tiziana; Giorgini, Loris...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/588888
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