Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Vacuum pyrolysis of waste tires with basic additives | |
| Zhang, Xinghua; Wang, Tiejun; Ma, Longlong; Chang, Jie | |
| 2008-11-01 | |
| Source Publication | WASTE MANAGEMENT
 |
| ISSN | 0956-053X |
| Volume | 28Issue:11Pages:2301-2310 |
| Corresponding Author | wangtj@ms.giec.ac.cn |
| Abstract | 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. |
| Subtype | Article |
| Other Abstract | 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. |
| Keyword | Catalytic Pyrolysis Carbon-blacks Scrap Tires Degradation Products Kinetics Naphtha Rubber |
| WOS Headings | Science & Technology ; Technology ; Life Sciences & Biomedicine |
| DOI | 10.1016/j.wasman.2007.10.009 |
| WOS Subject Extended | Engineering ; Environmental Sciences & Ecology |
| URL | 查看原文 |
| WOS Keyword | CATALYTIC PYROLYSIS ; CARBON-BLACKS ; SCRAP TIRES ; DEGRADATION ; PRODUCTS ; KINETICS ; NAPHTHA ; RUBBER |
| Indexed By | SCI |
| Language | 英语 |
| Funding Organization | Natural Science Foundation of China [50506030] |
| WOS Subject | Engineering, Environmental ; Environmental Sciences |
| WOS ID | WOS:000260136400031 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/3416 |
| Collection | 中国科学院广州能源研究所 |
| Affiliation | Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy & Gas Hydrate, Guangzhou 610540, Guangdong, Peoples R China |
| Recommended Citation 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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