Styrene recovery from polystyrene by flash pyrolysis in a conical spouted bed reactor
2015; Elsevier BV; Volume: 45; Linguagem: Inglês
10.1016/j.wasman.2015.05.034
ISSN1879-2456
AutoresMaite Artetxe, Gartzen López, Maider Amutio, Itsaso Barbarias, Aitor Arregi, Roberto Aguado, Javier Bilbao, Martı́n Olazar,
Tópico(s)Recycling and Waste Management Techniques
ResumoContinuous pyrolysis of polystyrene has been studied in a conical spouted bed reactor with the main aim of enhancing styrene monomer recovery. Thermal degradation in a thermogravimetric analyser was conducted as a preliminary study in order to apply this information in the pyrolysis in the conical spouted bed reactor. The effects of temperature and gas flow rate in the conical spouted bed reactor on product yield and composition have been determined in the 450–600 °C range by using a spouting velocity from 1.25 to 3.5 times the minimum one. Styrene yield is strongly influenced by both temperature and gas flow rate, with the maximum yield being 70.6 wt% at 500 °C and a gas velocity twice the minimum one.
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