Production of light aromatics from biomass components co-pyrolyzed with polyethylene via non-thermal plasma synergistic upgrading

被引:11
作者
Fan, Yongsheng [1 ]
Lu, Dongsheng [1 ]
Han, Yue [1 ]
Yang, Jiaheng [1 ]
Qian, Cheng [1 ]
Li, Binyu [1 ]
机构
[1] Yancheng Inst Technol, Sch Automot Engn, Hope Ave Middle Rd 1, Yancheng 224051, Jiangsu, Peoples R China
基金
中国国家自然科学基金;
关键词
Biomass components; Polyethylene; Hydrocarbons; Non-thermal plasma; HZSM-5; zeolites; HIGH-DENSITY POLYETHYLENE; CATALYTIC FAST PYROLYSIS; BIO-OIL; RECENT PROGRESS; MODEL COMPOUNDS; CONVERSION; HZSM-5; TRANSFORMATION; HYDROCARBONS; PLASTICS;
D O I
10.1016/j.energy.2022.126427
中图分类号
O414.1 [热力学];
学科分类号
摘要
Catalytic co-pyrolysis of cellulose, xylan and lignin with polyethylene (PE) was conducted using a tandem vacuum pyrolysis and non-thermal plasma (NTP) synergistic upgrading system. HZSM-5, Ti and Ni modified HZSM-5 were employed. Cellulose-derived furfural was difficult to be converted, and increased PE ratio generated more olefins and promoted furfural deoxygenation. Ti-modification raised MAHs from 12.23% to 42.55% while Ni-modification further increased MAHs to 44.36%. However, Ti-modification raised the catalytic coke from 0.12% to 3.20% while Ni-modification mainly increased thermal coke from 1.69% to 4.63%. Xylan co-pyrolyzed with more PE promoted the production of olefins due to reverse Diels-Alder reaction. Ti-modification slightly improved MAHs from 17.09% to 22.58%, while Ni-modification remarkably increased MAHs to 40.90%. Correspondingly, Ti-modification slightly increased light and thermal cokes, while Ni-modification raised all types and total coke content increased from 5.50% to 10.97%. Lignin obtained the lowest oil yield of 15.02% with the maximum MAHs of 84.34%, and co-pyrolysis with PE improved the deoxygenation. Ti-modification increased petroleum-like alkanes with the reduction of MAHs and olefins while Ni-modification increased MAHs from 59.22% to 71.93%. However, the lower oxygen content and more aliphatic branches contributed to the higher ratio of aliphatic hydrogen, and catalysts were coked seriously.
引用
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页数:13
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