Secondary reactions in oil shale pyrolysis by solid heat carrier in a moving bed with internals

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	Secondary reactions in oil shale pyrolysis by solid heat carrier in a moving bed with internals
	Lai, Dengguo 1,2; Shi, Yong 3; Geng, Sulong 1,2; Chen, Zhaohui 1,2; Gao, Shiqiu 1; Zhan, Jin-Hui 1; Xu, Guangwen 1
刊名	FUEL
	2016-06-01
卷号	173 期号:JUNE 页码:138-145
关键词	Pyrolysis Solid heat carrier Oil shale Secondary reactions Cracking Coking
ISSN号	0016-2361
通讯作者	Zhan, JH
英文摘要	The secondary reactions occurring during the formation of shale oil are investigated with Huadian oil shale pyrolysis by solid heat carrier in a newly devised moving bed with internals (MBI). The effect of secondary reactions, which are mainly vapor-phase cracking, on shale oil property and yield at different temperatures is characterized on the basis of ultimate, C-13 NMR and GC-MS analyses of the produced oil. The increases in the production rate of hydrocarbon gas species and related molar ratios clarify that the oil vapor cracking, rather than coking, is the main secondary reactions at pyrolysis temperature over 495 degrees C. Ultimate analysis of shale oil shows that cracking increases the carbon and nitrogen contents of oil but decreases its hydrogen and oxygen contents. There are obvious decreases in the atomic H/C and O/C ratios of shale oil with increasing the pyrolysis temperature. NMR analysis shows that the aromaticity of shale oil increases considerably due to secondary reactions. Selective concentration of existing aromatics and aromatization of aliphatics are of roughly equal importance. The GC-MS results indicate that the aliphatic hydrocarbons (alkanes and alkenes) are the main detected components in shale oil and represent 75% of the detected peak areas. Via oil vapor cracking, a part of long-chain aliphatics is transformed into short-chain alkanes, alkenes and gas species to increase the low-carbon hydrocarbons. The increase in aromatic proportion with raising temperature is due to the selective concentration by cracking aliphatics and aromatization reactions such as dehydrogenation and their subsequent reactions. (C) 2016 Elsevier Ltd. All rights reserved.
学科主题	Energy & Fuels ; Engineering, Chemical ; Energy & Fuels ; Engineering
WOS标题词	Science & Technology ; Technology
类目[WOS]	Energy & Fuels ; Engineering, Chemical
研究领域[WOS]	Energy & Fuels ; Engineering
关键词[WOS]	OPEN-SYSTEM PYROLYSIS ; GAS EVOLUTION ; CLOSED-SYSTEM ; CRACKING ; KINETICS ; ASH ; TEMPERATURE ; DECOMPOSITION ; TECHNOLOGY ; GENERATION
收录类别	SCI
原文出处	ELSEVIER SCI LTD
语种	英语
WOS记录号	WOS:000370189500015
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/20685]
专题	过程工程研究所_研究所（批量导入）
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 3.Anhui Univ Technol, Hefei 243032, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Lai, Dengguo,Shi, Yong,Geng, Sulong,et al. Secondary reactions in oil shale pyrolysis by solid heat carrier in a moving bed with internals[J]. FUEL,2016,173(JUNE):138-145.
APA	Lai, Dengguo.,Shi, Yong.,Geng, Sulong.,Chen, Zhaohui.,Gao, Shiqiu.,...&Xu, Guangwen.(2016).Secondary reactions in oil shale pyrolysis by solid heat carrier in a moving bed with internals.FUEL,173(JUNE),138-145.
MLA	Lai, Dengguo,et al."Secondary reactions in oil shale pyrolysis by solid heat carrier in a moving bed with internals".FUEL 173.JUNE(2016):138-145.