Pyrolysis of end-of-life polystyrene in a pilot-scale reactor : Maximizing styrene production

Copyright © 2021 Elsevier Ltd. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Waste management (New York, N.Y.). - 1999. - 139(2022) vom: 15. Feb., Seite 85-95
1. Verfasser: Zayoud, Azd (VerfasserIn)
Weitere Verfasser: Dao Thi, Hang, Kusenberg, Marvin, Eschenbacher, Andreas, Kresovic, Uros, Alderweireldt, Nick, Djokic, Marko, Van Geem, Kevin M
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2022
Zugriff auf das übergeordnete Werk:Waste management (New York, N.Y.)
Schlagworte:Journal Article CSTR Continuous process Mathematical optimization Polystyrene Pyrolysis Waste plastic Polystyrenes Xylenes Toluene 3FPU23BG52
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520 |a Chemical recycling of polystyrene (PS) via pyrolysis is of great industrial, and academic interest, with styrene being the primary product of interest. To identify the optimal process conditions, the pyrolysis of end-of-life PS was studied in a pilot-scale unit consisting of an extruder, and a continuous stirred tank reactor (CSTR). The PS was pyrolyzed with continuous feeding at a pressure range from 0.02 to 1.0bara, and a temperature range from 450 to 600 °C, giving primarily styrene, other mono-aromatics, and oligomers. The comprehensive two-dimensional gas chromatography (GC × GC) coupled with flame ionization detector (FID), and time-of-flight mass spectrometer (ToF-MS) as well as GC with thermal conductivity detector (TCD) were used to characterize the liquid, and gaseous products exhaustively. The styrene yield increased from 36 wt% at 1.0bara, and 450 °C to 56 wt% at 0.02bara, and 550 °C. Working under a vacuum enhanced the styrene recovery at all corresponding temperature levels. The yield of benzene, toluene, ethylbenzene, and xylene (BTEX) increased from 4 wt% at 450 °C, and 0.02 bara to 17 wt% at 450 °C, and 1.0 bara. The experimental results have been used in a mathematical model that can explain the combined effect of temperature, and pressure on the yield of the primary products. The present work illustrates the potential of a continuous pyrolysis process for end-of-life PS, and paves the way for this technology to be rapidly transferred from mere laboratory use to industrial processes in the circular (petro-) chemical industry 
650 4 |a Journal Article 
650 4 |a CSTR 
650 4 |a Continuous process 
650 4 |a Mathematical optimization 
650 4 |a Polystyrene 
650 4 |a Pyrolysis 
650 4 |a Waste plastic 
650 7 |a Polystyrenes  |2 NLM 
650 7 |a Xylenes  |2 NLM 
650 7 |a Toluene  |2 NLM 
650 7 |a 3FPU23BG52  |2 NLM 
700 1 |a Dao Thi, Hang  |e verfasserin  |4 aut 
700 1 |a Kusenberg, Marvin  |e verfasserin  |4 aut 
700 1 |a Eschenbacher, Andreas  |e verfasserin  |4 aut 
700 1 |a Kresovic, Uros  |e verfasserin  |4 aut 
700 1 |a Alderweireldt, Nick  |e verfasserin  |4 aut 
700 1 |a Djokic, Marko  |e verfasserin  |4 aut 
700 1 |a Van Geem, Kevin M  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Waste management (New York, N.Y.)  |d 1999  |g 139(2022) vom: 15. Feb., Seite 85-95  |w (DE-627)NLM098197061  |x 1879-2456  |7 nnns 
773 1 8 |g volume:139  |g year:2022  |g day:15  |g month:02  |g pages:85-95 
856 4 0 |u http://dx.doi.org/10.1016/j.wasman.2021.12.018  |3 Volltext 
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