Fuel oil from ABS using a tandem PEG-enhanced denitrogenation–pyrolysis method: Thermal degradation of denitrogenated ABS

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• 作者：An-Ke Du^a ; Qian Zhou^a ; ^{qzhou@scu.edu.cn"" rel=""nofollow} ; Johannes M.N. van Kasteren^b ; ^{j.m.n.v.kasteren@tue.nl"" rel=""nofollow} ; Yu-Zhong Wang^a
• 关键词：Pyrolysis ; Denitrogenation ; ABS ; Plastic waste ; Recycling
• 刊名：Journal of Analytical and Applied Pyrolysis
• 出版年：2011
• 出版时间：September 2011
• 年：2011
• 卷：92
• 期：1
• 页码：267-272
• 全文大小：552 K

文摘

Thermal degradation of ABS and denitrogenated ABS samples (DABS), prepared by sequential hydrolysis of ABS using PEG/NaOH, has been investigated under inert gas and at atmospheric pressure in a temperature range between 40 and 700 °C, by means of TGA, TGA-IR, and TGA-MS, to study the link between original structure of DABS and eventual pyrolysis. For DABS, thermal decomposition begins at the side groups of –CONH₂ and/or –COOH, resulting in a lower initial degradation temperature of DABS (around 330 °C) relative to ABS (372.5 °C). Moreover, less HCN and acrylonitrile evolve from the DABS samples, while the evolution of CO₂ starts earlier and becomes more important, in line with the decreased number of –CN groups and the increased number of –COOH functional groups due to hydrolysis. The results from thermo-analytical experiments were confirmed by batch pyrolysis tests: the nitrogen content of oil produced from DABS pyrolysis is much lower, compared with that from ABS, proving that effective denitrogenation of ABS prior to pyrolysis is beneficial to the quality of pyrolysis oil.