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Performance analysis and fate of bromine in a single screw reactor for pyrolysis of waste electrical and electronic equipment (WEEE)
RISE Research Institutes of Sweden, Built Environment, System Transition and Service Innovation. KTH Royal Institute of Technology, Sweden.ORCID iD: 0000-0002-9949-6274
RISE Research Institutes of Sweden. KTH Royal Institute of Technology, Sweden.
KTH Royal Institute of Technology, Sweden.
KTH Royal Institute of Technology, Sweden.
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. © 2020 The Authors

Place, publisher, year, edition, pages
Institution of Chemical Engineers , 2020. Vol. 143, p. 313-321
Keywords [en]
Auger reactor, BRFs, Feedstock recycling, Pyrolysis, Screw reactor, WEEE, Augers, Bromine, Chemical equipment, Elastomers, Electronic equipment, Flame retardants, Low temperature production, Petroleum industry, Plastic recycling, Temperature, Brominated flame retardants, Chemical recycling, Industrial processs, Maximum concentrations, Performance analysis, Temperature conditions, Waste electrical and electronic equipment, Electronic Waste
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Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-45606DOI: 10.1016/j.psep.2020.07.006Scopus ID: 2-s2.0-85087748329OAI: oai:DiVA.org:ri-45606DiVA, id: diva2:1458232
Note

Funding details: 36880-2; Funding text 1: The authors would like to acknowledge Shen Wu for constructing the auger reactor, which this experimental process has been used. Moreover, the authors would like to acknowledge Stena Technoword and Henrik Jilvero for providing the WEEE material and Swedish energy agenc y (Project number 36880-2 ) for funding this study.

Available from: 2020-08-14 Created: 2020-08-14 Last updated: 2021-11-30Bibliographically approved

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Evangelopoulos, Panagiotis

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