期刊
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
卷 168, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jaap.2022.105709
关键词
Low -density polyethylene; Co -pyrolysis; Spent bleaching clay; Microwave -absorbent; Bio-oil
资金
- National Natural Science Foundation of China [52166015, 22166026]
- Major Discipline Academic and Technical Leaders Training Program of Jiangxi Province [20204BCJ23011]
- Natural Science Foundation of Jiangxi Province [20212ACB215007]
- Centrally Guided Local Science Technology Special Project [20202ZDB01012]
In this study, microwave-assisted catalytic co-pyrolysis of SBC and LDPE was conducted to produce bio-oil rich in MAHs. The findings revealed the synergistic effect of SBC and LDPE, as well as the microwave absorption characteristics of SBC. Furthermore, the high H/Ceff of LDPE promoted the deoxidation of SBC, optimizing the quality of bio-oil.
Combined with the fact that the poor heat transfer effect of low-density polyethylene (LDPE), the microwave absorption characteristics of spent bleaching clay (SBC) and the synergistic effect of co-pyrolysis, we conducted a study. In this study, microwave-assisted catalytic co-pyrolysis of SBC and LDPE was used to produce bio-oil rich in monocyclic aromatic hydrocarbons (MAHs). Then the conditions of co-pyrolysis, including pyrolysis tem-perature, catalytic temperature, the ratio of SBC/LDPE and catalytic mass were explored. The findings revealed that SBC and LDPE had a synergistic effect, SBC had microwave absorption characteristics, which could transfer heat to LDPE to improve heating rate. And the high H/Ceff of LDPE promoted the deoxidation of the SBC, which could optimize the quality of bio-oil. Compared with 43.69% for LDPE pyrolysis alone and 47.18% for SBC pyrolysis alone, the content of MAHs during co-pyrolysis was 54.92%. The optimum pyrolysis parameter was discovered at the pyrolysis temperature of 550 degrees C, 450 degrees C of catalytic temperature, 40:28.5 ratio of SBC to LDPE, 7 g of HZSM-5 mass, 69.89% of MAHs and 16.48% of Polycyclic aromatic hydrocarbons was obtained.
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