Vacuum pyrolysis of waste tires with basic additives

doi:10.1016/j.wasman.2007.10.009

GIEC OpenIR > 中国科学院广州能源研究所

	Vacuum pyrolysis of waste tires with basic additives
	Zhang, Xinghua; Wang, Tiejun; Ma, Longlong; Chang, Jie
	2008-11-01
发表期刊	WASTE MANAGEMENT
ISSN	0956-053X
卷号	28 期号:11 页码:2301-2310
通讯作者	wangtj@ms.giec.ac.cn
摘要	Granules of waste tires were pyrolyzed tinder vacuum (3.5-10 kPa) conditions, and the effects of temperature and basic additives (Na2CO3, NaOH) on the properties of pyrolysis were thoroughly investigated. It was obvious that with or without basic additives, pyrolysis oil yield increased gradually to a maximum and subsequently decreased with a temperature increase from 450 degrees C to 600 degrees C, irrespective of the addition of basic additives to the reactor. The addition of NaOH facilitated pyrolysis dramatically, as a maximal pyrolysis oil yield of about 48 wt% was achieved at 550 degrees C without the addition of basic additives, while a maximal pyrolysis oil yield of about 50 wt% was achieved at 480 degrees C by adding 3 wt% (w/w, powder/waste tire granules) of NaOH powder. The composition analysis of pyrolytic naphtha (i.b.p. (initial boiling point) similar to 205 degrees C) distilled from pyrolysis oil showed that more dl-limonene was obtained with basic additives and the maximal content of dl-limonene in pyrolysis oil was 12.39 wt% which is a valuable and widely-used fine chemical. However, no improvement in pyrolysis was observed with Na2CO3 addition. Pyrolysis gas was mainly composed of H-2, CO, CH4, CO2, C2H4 and C2H6. Pyrolytic char had a surface area comparable to commercial carbon black, but its proportion of ash (above 11.5 wt%) was much higher. (c) 2007 Elsevier Ltd. All rights reserved.
文章类型	Article
其他摘要	Granules of waste tires were pyrolyzed tinder vacuum (3.5-10 kPa) conditions, and the effects of temperature and basic additives (Na2CO3, NaOH) on the properties of pyrolysis were thoroughly investigated. It was obvious that with or without basic additives, pyrolysis oil yield increased gradually to a maximum and subsequently decreased with a temperature increase from 450 degrees C to 600 degrees C, irrespective of the addition of basic additives to the reactor. The addition of NaOH facilitated pyrolysis dramatically, as a maximal pyrolysis oil yield of about 48 wt% was achieved at 550 degrees C without the addition of basic additives, while a maximal pyrolysis oil yield of about 50 wt% was achieved at 480 degrees C by adding 3 wt% (w/w, powder/waste tire granules) of NaOH powder. The composition analysis of pyrolytic naphtha (i.b.p. (initial boiling point) similar to 205 degrees C) distilled from pyrolysis oil showed that more dl-limonene was obtained with basic additives and the maximal content of dl-limonene in pyrolysis oil was 12.39 wt% which is a valuable and widely-used fine chemical. However, no improvement in pyrolysis was observed with Na2CO3 addition. Pyrolysis gas was mainly composed of H-2, CO, CH4, CO2, C2H4 and C2H6. Pyrolytic char had a surface area comparable to commercial carbon black, but its proportion of ash (above 11.5 wt%) was much higher.
关键词	Catalytic Pyrolysis Carbon-blacks Scrap Tires Degradation Products Kinetics Naphtha Rubber
WOS标题词	Science & Technology ; Technology ; Life Sciences & Biomedicine
DOI	10.1016/j.wasman.2007.10.009
研究领域[WOS]	Engineering ; Environmental Sciences & Ecology
URL	查看原文
关键词[WOS]	CATALYTIC PYROLYSIS ; CARBON-BLACKS ; SCRAP TIRES ; DEGRADATION ; PRODUCTS ; KINETICS ; NAPHTHA ; RUBBER
收录类别	SCI
语种	英语
项目资助者	Natural Science Foundation of China [50506030]
WOS类目	Engineering, Environmental ; Environmental Sciences
WOS记录号	WOS:000260136400031
引用统计	被引频次：159[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/3416
专题	中国科学院广州能源研究所
作者单位	Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy & Gas Hydrate, Guangzhou 610540, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xinghua,Wang, Tiejun,Ma, Longlong,et al. Vacuum pyrolysis of waste tires with basic additives[J]. WASTE MANAGEMENT,2008,28(11):2301-2310.
APA	Zhang, Xinghua,Wang, Tiejun,Ma, Longlong,&Chang, Jie.(2008).Vacuum pyrolysis of waste tires with basic additives.WASTE MANAGEMENT,28(11),2301-2310.
MLA	Zhang, Xinghua,et al."Vacuum pyrolysis of waste tires with basic additives".WASTE MANAGEMENT 28.11(2008):2301-2310.

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