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Performance analysis and fate of bromine in a single screw reactor for pyrolysis of waste electrical and electronic equipment (WEEE)
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering. RISE Research Institutes of Sweden, Division Built Environment - Energy and Circular Economy, Resource Recovery from Waste, Drottning Kristinas väg 61, 114 86, Stockholm, Sweden.ORCID iD: 0000-0002-9949-6274
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering. RISE Research Institutes of Sweden, Division Bioeconomy – Biorefinery and Energy, Drottning Kristinas väg 61, 114 86, Stockholm, Sweden.ORCID iD: 0000-0002-2373-4950
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemical Engineering.ORCID iD: 0000-0001-9831-6633
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.ORCID iD: 0000-0002-1837-5439
2020 (English)In: Process Safety and Environmental Protection, ISSN 0957-5820, E-ISSN 1744-3598, Vol. 143, p. 313-321Article in journal (Refereed) Published
Abstract [en]

This study focuses on chemical recycling of plastics from waste electrical and electronic equipment (WEEE), which constitutes a problematic waste fraction due to the presence of brominated flame retardants. An auger reactor has been designed and used for this study. Real WEEE material provided by Stena Technoworld has been pyrolyzed under different temperature conditions. The performance of the reactor as well as other important parameters such as the fate of the bromine have been investigated and evaluated. The main outcome of this investigation is to simulate a continuous process, which can be useful for designing a full-scale industrial process. The mass balance results after performing thermal treatment at 400, 500, and 600 °C, showed a high gas yield (44 %wt) at the temperature of 600 °C, which energy content is enough to self-sustain the auger reactor. At the low temperature of 400 °C the oil production reaches its maximum yield as well as maximum concentration of bromine, corresponding to 0.5 wt% in the oil. Several valuable organic compounds have been detected in the oil composition, which can be used as precursors for feedstock recycling producing new plastics.

Place, publisher, year, edition, pages
2020. Vol. 143, p. 313-321
Keywords [en]
Pyrolysis, Screw reactor, Auger reactor, BRFs, WEEE, Feedstock recycling
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-284009DOI: 10.1016/j.psep.2020.07.006ISI: 000589806100015Scopus ID: 2-s2.0-85087748329OAI: oai:DiVA.org:kth-284009DiVA, id: diva2:1476135
Note

QC 20201120

Available from: 2020-10-13 Created: 2020-10-13 Last updated: 2025-02-18Bibliographically approved

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Evangelopoulos, PanagiotisPersson, Henry V.Kantarelis, EfthymiosYang, Weihong

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