Kusumi Ryo, Kusumawati Miranti Budi, Borjigin Siqingaowa, Kumagai Shogo, Yoshida Akihiro, Nakatsuka Yasuo, Takasawa Ryuichi, Toyooka Yoshiyuki, Yoshioka Toshiaki
Graduate School of Environmental Studies, Tohoku University, 6-6-07 Aoba, Aramaki-aza, Aoba-ku, Sendai, 980-8579, Miyagi, Japan.
National Research and Innovation Agency of Indonesia, B.J. Habibie building, M.H. Thamrin No.8, Central Jakarta 10340, Jakarta, Indonesia.
Sci Rep. 2024 Oct 1;14(1):22856. doi: 10.1038/s41598-024-74053-9.
Vacuum residue (VR) was copyrolysed with polyethylene (PE) or polystyrene (PS) in a batch reactor to investigate the corresponding synergistic pyrolytic interactions. The synergistic interactions between VR and plastic pyrolysates enhanced liquid and gas production while reducing coke formation, as compared with VR-only and plastic-only pyrolysis. The pyrolysis of 9:1 w/w VR: PE (PE with M = 3 MDa) and 9:1 w/w VR/PS (PS with M ≈ 350 kDa) mixtures produced oil in yields of 28.6 and 38.4 wt%, respectively, which exceeded those expected in the absence of synergistic interactions 1.12- and 1.29-fold, respectively. The corresponding coke yields were ~ 0.9 times lower than those expected in the absence of synergistic interactions. Moreover, copyrolysis synergistically increased the yields of oil-phase paraffins and olefins while decreasing that of aromatic compounds and was therefore concluded to enable effective VR utilisation and plastic recycling by enhancing liquid and gas production.
在间歇式反应器中，将减压渣油（VR）与聚乙烯（PE）或聚苯乙烯（PS）进行共热解，以研究相应的协同热解相互作用。与单独的VR热解和单独的塑料热解相比，VR与塑料热解产物之间的协同相互作用提高了液体和气体的产量，同时减少了焦炭的形成。9:1 w/w的VR:PE（M = 3 MDa的PE）和9:1 w/w的VR/PS（M≈350 kDa的PS）混合物热解分别产生了28.6 wt%和38.4 wt%的油，分别比无协同相互作用时预期的产量高出1.12倍和1.29倍。相应的焦炭产量比无协同相互作用时预期的产量低约0.9倍。此外，共热解协同提高了油相石蜡和烯烃的产量，同时降低了芳烃化合物的产量，因此得出结论，共热解通过提高液体和气体产量能够实现VR的有效利用和塑料回收。
