Polyethylene high-pressure pyrolysis: Better product distribution and process mechanism analysis
文献类型：期刊论文
| 作者 | Cheng, Leilei1,2,3,4; Gu, Jing1,2,3; Wang, Yazhuo1,2,3 ; Zhang, Jun1,2,3; Yuan, Haoran1,2,3; Chen, Yong1,2,3
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| 刊名 | CHEMICAL ENGINEERING JOURNAL
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| 出版日期 | 2020-04-01 |
| 卷号 | 385页码:11 |
| 关键词 | Polyethylene High-pressure pyrolysis Microscopic mechanism Radical |
| ISSN号 | 1385-8947 |
| DOI | 10.1016/j.cej.2019.123866 |
| 通讯作者 | Yuan, Haoran(yuanhr@ms.giec.ac.cn) |
| 英文摘要 | Pyrolysis is currently an effective way to recycle plastics. High-pressure conditions can change the pyrolysis product component distribution, but the microscopic mechanism has not been well elucidated. To explore the relationship of product distribution versus pressure and explain the microscopic mechanism of polyethylene high-pressure pyrolysis, experiments under a large initial pressure range from 1 bar to 51 bar at initial temperatures of 330-380 degrees C were carried out in an autoclave. In the process of polyethylene high-pressure pyrolysis, the temperature within the reactor exceeded the set temperature by 100 degrees C at a rate of 150 degrees C/min. The thermal runaway phenomenon was caused by the polymerization of concentrated olefins in liquid form, which was initiated by hydrocarbon radicals. As the pressure increased, the reaction peak temperature was risen and more small molecules were produced. Under an initial temperature of 340 degrees C and high-pressure conditions, polyethylene was completely converted into liquid and gas products. The experimental results also revealed that high-pressure conditions led to the production of aromatic compounds and isoparaffins, as well as more cycloalkanes and fewer olefins in the liquid product, making the product characteristics closer to the fuel standard. Finally, this paper proposes the radical microscopic mechanisms of polyethylene thermal degradation under atmospheric-pressure and high-pressure conditions. |
| WOS关键词 | CATALYTIC FLASH PYROLYSIS ; THERMAL/CATALYTIC CRACKING ; PLASTIC WASTE ; HYDROCARBONS ; DEGRADATION ; MICROPLASTICS ; EVOLUTION ; RECOVERY ; OLEFINS ; REACTOR |
| 资助项目 | National Key Research and Development Program of China[2018YFC1901200] ; National Natural Science Foundation of China[51606202] ; Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou)[GML2019ZD0101] ; Science and Technology Planning Project of Guangzhou[201904010351] ; Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences[ISEE2018YB04] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000507465200117 |
| 出版者 | ELSEVIER SCIENCE SA |
| 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) ; Science and Technology Planning Project of Guangzhou ; Innovation Academy of South China Sea Ecology and Environmental Engineering, Chinese Academy of Sciences |
| 源URL | [http://ir.giec.ac.cn/handle/344007/26334]  |
| 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.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 2.CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China 3.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cheng, Leilei,Gu, Jing,Wang, Yazhuo,et al. Polyethylene high-pressure pyrolysis: Better product distribution and process mechanism analysis[J]. CHEMICAL ENGINEERING JOURNAL,2020,385:11. |
| APA | Cheng, Leilei,Gu, Jing,Wang, Yazhuo,Zhang, Jun,Yuan, Haoran,&Chen, Yong.(2020).Polyethylene high-pressure pyrolysis: Better product distribution and process mechanism analysis.CHEMICAL ENGINEERING JOURNAL,385,11. |
| MLA | Cheng, Leilei,et al."Polyethylene high-pressure pyrolysis: Better product distribution and process mechanism analysis".CHEMICAL ENGINEERING JOURNAL 385(2020):11. |
入库方式： OAI收割
来源：广州能源研究所
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