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High Olefin Yield in Pyrolysis of Heavier Hydrocarbon Liquids Using Microwave as Heat Supplier
Jing, Xiaodong; Zhao, Yuehong; Wen, Hao; Xu, Zhihong
2017-02-01
Source PublicationENERGY & FUELS
ISSN0887-0624
Volume31Issue:2Pages:2052-2062
Abstract

In order to expand the scope of C2H4 pyrolysis material and recycle the waste polyolefin, this study has employed microwave pyrolysis of heavier hydrocarbon liquids. Microwave pyrolysis not only maintains a stable energy supply to the reaction materials for obtaining a high conversion rate, but also avoids coking caused by local overheating. Steam may serve a dual role as diluent and heat carrier. Thus, this study has obtained higher olefin yield, higher olefin selectivity, and better operational continuity than conventional steam cracking. Light olefins (C-2(=)-C-4(=)) reached 50.65-68.64 mol% in the pyrolysis gas. The yields of C2H4 and C3H6 for heavier hydrocarbons pyrolysis were 42.80-44.76 and 12.98-13.91 wt% of the feedstock, respectively, while the maximum yields of C2H4 and C3H6 for pyrolysis of liquid products of polyolefin cracking were 47.00 and 22.83 wt%, respectively. Analysis of the pyrolysis mechanism indicates that the beta-scission reactions of free radicals are predominant, while the secondary reactions are significantly inhibited due to the enhanced heat transfer between the steam and the hydrocarbons.

SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1021/acs.energyfuels.6b02734
Indexed BySCI
Language英语
WOS KeywordLow-density Polyethylene ; Fluidized-bed Reactor ; Closed-batch Reactor ; Fast-mixing Reactor ; Thermal-cracking ; Plastic Wastes ; Light Olefins ; Temperature Pyrolysis ; Activated Carbon ; Mild Cracking
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Chemical
Funding OrganizationState Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences(MPCS-2012-A-01)
WOS IDWOS:000394560900107
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/22095
Collection多相复杂系统国家重点实验室
AffiliationChinese Acad Sci, Inst Proc Engn, Beijing Engn Res Ctr Proc Pollut Control, State Key Lab Multiphase Complex Syst, 1,2nd North St, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Jing, Xiaodong,Zhao, Yuehong,Wen, Hao,et al. High Olefin Yield in Pyrolysis of Heavier Hydrocarbon Liquids Using Microwave as Heat Supplier[J]. ENERGY & FUELS,2017,31(2):2052-2062.
APA Jing, Xiaodong,Zhao, Yuehong,Wen, Hao,&Xu, Zhihong.(2017).High Olefin Yield in Pyrolysis of Heavier Hydrocarbon Liquids Using Microwave as Heat Supplier.ENERGY & FUELS,31(2),2052-2062.
MLA Jing, Xiaodong,et al."High Olefin Yield in Pyrolysis of Heavier Hydrocarbon Liquids Using Microwave as Heat Supplier".ENERGY & FUELS 31.2(2017):2052-2062.
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