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Study on the evolution characteristic of intermediate during the pyrolysis of oil shale
Li, Mengya1,2; Zhan, Jin-Hui1; Lai, Dengguo1,2; Tian, Yong1,2; Liu, Xiaoxing1; Xu, Guangwen1
2017-12-01
发表期刊JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
ISSN1388-6150
卷号130期号:3页码:2227-2238
摘要

The pyrolysis of oil shale is a complex process including a myriad of chemical reactions. A widely approved understanding suggests a two-step decomposition process for oil shale pyrolysis, considering bitumen as the intermediate product. In this study, intermediates derived from various pyrolysis conditions are comprehensively studied by FTIR, GC, GC-MS and NMR methods to understand the pyrolysis mechanism of oil shale and composition feature of intermediate. The pyrolysis of oil shale is a dynamic process, and the results show that the intermediate is continuously generated before 400 A degrees C, accompanying with the formation of final products from both intermediate and kerogen. The maximum yield of intermediates is presented at the fastest oil-producing temperature range (375 A degrees C in this study). Carbon chains in intermediate become short with the increase in temperature. Most components in pyrolysis intermediate are long straight aliphatic chains; thus, intermediate is much heavier than shale oil. Further reactions make intermediate convert into shale oil product. Aliphatic hydrocarbons occupied the biggest proportion over 86% at 375 A degrees C, mainly in the form of straight-chain alkanes. A few parts of aromatic fragments with small ring numbers will also transfer into intermediate. The heteroatom-containing compounds are mainly alcohols, ketones, amides and halohydrocarbons. High aromaticity in shale oil at high temperatures can be attributed to the condensation reaction of abundant aliphatic hydrocarbons in intermediate. During the conversion process from intermediate to final products, the generating capacity of oil is evidently higher than that of gas.

关键词Oil Shale Intermediate Pyrolysis Structural Composition
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
DOI10.1007/s10973-017-6610-z
收录类别SCI
语种英语
关键词[WOS]STATE C-13 NMR ; RESIDUAL CARBON ; KEROGEN ; FTIR ; DECOMPOSITION ; SPECTROSCOPY ; CONVERSION ; KINETICS ; BITUMEN ; GC/MS
WOS研究方向Thermodynamics ; Chemistry
WOS类目Thermodynamics ; Chemistry, Analytical ; Chemistry, Physical
项目资助者National Natural Science Foundation of China(21306210) ; National Basic Research Program of China(2014CB744302)
WOS记录号WOS:000415619800097
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/23431
专题多相复杂系统国家重点实验室
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714
Li, Mengya,Zhan, Jin-Hui,Lai, Dengguo,et al. Study on the evolution characteristic of intermediate during the pyrolysis of oil shale[J]. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,2017,130(3):2227-2238.
APA Li, Mengya,Zhan, Jin-Hui,Lai, Dengguo,Tian, Yong,Liu, Xiaoxing,&Xu, Guangwen.(2017).Study on the evolution characteristic of intermediate during the pyrolysis of oil shale.JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,130(3),2227-2238.
MLA Li, Mengya,et al."Study on the evolution characteristic of intermediate during the pyrolysis of oil shale".JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY 130.3(2017):2227-2238.
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