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题名: Influence of variation in the operating conditions on PCDD/F distribution in a full-scale MSW incinerator
作者: Zhang, Hai-Jun1;  Ni, Yu-Wen1;  Chen, Ji-Ping1;  Zhang, Qing1
通讯作者: 陈吉平
关键词: waste incineration ;  PCDD/F ;  temperature ;  O-2 content ;  homologue pattern ;  isomer pattern
刊名: CHEMOSPHERE
发表日期: 2008
DOI: 10.1016/j.chemosphere.2007.06.054
卷: 70, 期:4, 页:721-730
收录类别: SCI
文章类型: Article
部门归属: 1
项目归属: 103
产权排名: 1;1
WOS标题词: Science & Technology ;  Life Sciences & Biomedicine
类目[WOS]: Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology
英文摘要: Optimizing the operating parameters to minimize polychlorodibenzo-p-dioxins and polychlorodibenzofurans (PCDD/F) emission is the common interest of the municipal solid waste (MSW) incineration industry. In this study, we investigated the distribution of tetra- to octa-CDD/F along the flue gas line in a full-scale reciprocating grate incinerator and evaluated the effects of temperature control and O-2 level on PCDD/F formation. Six runs were laid out and all performed under sufficient burning conditions, in which the combustion efficiency of MSW was more than 99.9%. The total concentration of tetra- to octa-CDD/F measured at the boiler outlet showed an increasing tendency with the increase of boiler outlet temperature (TB) from 214 degrees C to 264 degrees C. When flue gas ran across the semi-dry scrubber and cyclone precipitator, in which the temperature varied from 264 degrees C to 162 degrees C, the concentrations of the lower chlorinated dioxins and furans were significantly raised, especially for the TCDF. Increasing 02 supply from 6.0% to 10.5% essentially led to a higher yield of tetra- to octa-PCDD/F, suggested that under sufficient burning conditions the lower O-2 level was favorable for reducing PCDD/F formation and emission. The variation of O-2 level did not give rise to a systematical change of PCDD/F homologue pattern. For all measurements, the isomer distributions of tetra- to hepta-PCDD/F were more or less the same, nearly independent of variations in the operating conditions and sampling positions. Only the significant increase of the sum of 1,3,7,8-TCDF and 1,3,7,9-TCDF was found in the zone after the boiler section. (c) 2007 Elsevier Ltd. All rights reserved.
关键词[WOS]: DIBENZO-P-DIOXINS ;  DE-NOVO SYNTHESIS ;  MUNICIPAL WASTE INCINERATION ;  FLUIDIZED-BED INCINERATOR ;  FLY-ASH ;  COMBUSTION CONDITIONS ;  POLYCHLORINATED DIBENZOFURANS ;  FLUE-GAS ;  MECHANISM ;  EMISSIONS
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000253254600020
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/99329
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Zhang, Hai-Jun,Ni, Yu-Wen,Chen, Ji-Ping,et al. Influence of variation in the operating conditions on PCDD/F distribution in a full-scale MSW incinerator[J]. CHEMOSPHERE,2008,70(4):721-730.
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