Pyrolysis of long chain hydrocarbon-based plastics via self-exothermic effects: The origin and influential factors of exothermic processes
文献类型：期刊论文
| 作者 | Cheng, Leilei2,3,4; Zhang, Yuyuan1; Wang, Yazhuo3,4 ; Gu, Jing3,4; Yuan, Haoran3,4; Chen, Yong3,4
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| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
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| 出版日期 | 2022-02-15 |
| 卷号 | 424页码:12 |
| 关键词 | Pyrolysis Phase transition Polyethylene Long chain hydrocarbon Exotherm |
| ISSN号 | 0304-3894 |
| DOI | 10.1016/j.jhazmat.2021.127476 |
| 通讯作者 | Yuan, Haoran(yuanhr@ms.giec.ac.cn) |
| 英文摘要 | Converting plastic wastes into value-added products through energy-efficient pyrolysis is essential, and it requires lower pyrolysis temperatures and shorter processing times than that of other processes. An exothermic phenomenon was observed during the process high-pressure polyethylene pyrolysis. It was proven for the first time that the exotherm is caused by a pressure-induced phase transition, in which colossal heat release can be driven by relatively small pressures. A large temperature change (> 100 degrees C) leads to the deep cracking of polyethylene, although the set temperature is far lower than the required temperature for thermal cracking. Importantly, the heat input stops immediately when the set temperature is reached; thus, the external heating time is short. Polyethylene can be completely converted into liquid products in similar to 90 wt% yield and with a small number of gases. The self-exothermic phase transition only occurs within a certain range of material thickness, which is related to the corresponding phase behavior. In the self-exothermic pyrolysis process, with an increase in the thickness of polyethylene, the proportion of low-value olefins in oil products decreases gradually, while alkanes, isoalkanes and aromatics show an increasing trend, making the product composition closer to the fuel standard. This work provides a viable approach for plastic recycling at low pyrolysis temperatures and short external heating times with the help of a self-exothermic phase transition in the absence of a catalyst. |
| WOS关键词 | CATALYTIC PYROLYSIS ; COLLAPSE TRANSITION ; PHASE-TRANSITIONS ; ROTATOR PHASES ; HIGH-PRESSURE ; POLYETHYLENE ; WASTE ; SPECTROSCOPY ; DEGRADATION ; POLYMERS |
| 资助项目 | National Key Research and Development Program of China[2018YFC1901200] ; National Natural Science Foundation of China[51976223] ; Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)[GML2019ZD0101] ; Guang-dong Province Science and Technology Planning Project[2019B110210003] |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000719939500006 |
| 出版者 | ELSEVIER |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) ; Guang-dong Province Science and Technology Planning Project |
| 源URL | [http://ir.giec.ac.cn/handle/344007/35264]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Yuan, Haoran |
| 作者单位 | 1.Foshan Univ, Coll Mat Sci & Energy Engn, Foshan 528000, Guangdong, Peoples R China 2.Univ Sci & Technol China, Sch Energy Sci & Engn, Hefei 230026, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 4.Southern Marine Sci & Engn Guangdong Lab Guangzho, Guangzhou 511458, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng, Leilei,Zhang, Yuyuan,Wang, Yazhuo,et al. Pyrolysis of long chain hydrocarbon-based plastics via self-exothermic effects: The origin and influential factors of exothermic processes[J]. JOURNAL OF HAZARDOUS MATERIALS,2022,424:12. |
| APA | Cheng, Leilei,Zhang, Yuyuan,Wang, Yazhuo,Gu, Jing,Yuan, Haoran,&Chen, Yong.(2022).Pyrolysis of long chain hydrocarbon-based plastics via self-exothermic effects: The origin and influential factors of exothermic processes.JOURNAL OF HAZARDOUS MATERIALS,424,12. |
| MLA | Cheng, Leilei,et al."Pyrolysis of long chain hydrocarbon-based plastics via self-exothermic effects: The origin and influential factors of exothermic processes".JOURNAL OF HAZARDOUS MATERIALS 424(2022):12. |
入库方式： OAI收割
来源：广州能源研究所
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