11With generation of waste plastics increasing, current EU legislation dictates high recovery rates and 12 policy favours waste management technology choices that occupy a high position on the waste 13 management hierarchy. Pyrolysis is a thermochemical conversion technology that can be considered a 14 'feedstock recycling' process and may play an increasing role in integrated waste management systems 15 of the future. The objective of this article is to present a review of current state-of-the-art commercial 16 pyrolysis processes for the production of liquid transport fuels from waste polyolefins (polyethylenes 17 (PE) and polypropylenes (PP)). Current plastic waste generation and management practices are briefly 18 summarised. Waste management infrastructure in Europe is reliant on landfill, incineration and 19 mechanical recycling, while feedstock recycling plays an insignificant role. Plastic-to-liquid (PTL) 20 platforms including delocalised pyrolysis followed by centralised upgrading, stand alone facilities, and 21 integrated waste management infrastructure concepts are briefly discussed. Commercial operations and 22 their process configurations are compared. Reactor technology for cracking of plastic waste is 23 presented. Important issues like fuel quality and contamination are also discussed. Fuel finishing 24 operations and fuel additives required to achieve an engine ready fuel are described in the final section.
25Recently published laboratory research in thermal and catalytic pyrolysis and integrated and co-26 processing studies are also summarised in this review. 27 28 liquefaction; pyrolysis; waste; plastic; polyolefin; waste-to-energy; waste
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