| 五氯酚在飞灰表面低温反应生成二口恶英特性 |
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| 引用本文： | 陈彤,李晓东,严建华,黄蕾,陆胜勇,谷月玲,岑可法. 五氯酚在飞灰表面低温反应生成二口恶英特性[J]. 化工学报, 2004, 55(10): 1696-1701 |
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| 作者姓名： | 陈彤 李晓东 严建华 黄蕾 陆胜勇 谷月玲 岑可法 |
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| 作者单位： | 浙江大学能源洁净利用与环境工程教育部重点实验室,浙江 杭州 310027 |
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| 摘 要： | 在管式炉上研究了不同试验条件飞灰/五氯酚生成二口恶英的分布特性.采用色质联机(HRGC/LRMS)测定了PCP中以及生成产物中的二口恶英含量.结果表明，生成产物中的二口恶英主要以气态形式存在，总的二口恶英中以PCDDs为主，比例高于97％，PCDDs中主要同系物是六至八氯代PCDDs.分析了飞灰含量以及氧含量对二口恶英生成的影响，二口恶英生成量随着飞灰中含碳量的增加而增大，氧含量是控制二口恶英生成的关键因素，氧含量在6.7％时生成的二口恶英总量及毒性当量值最小.对试验中产生的二口恶英进行了质量平衡，为进一步研究垃圾焚烧过程中二口恶英排放以及分布特性打下基础.
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| 关 键 词： | 飞灰 五氯酚 前驱物 二口恶英 非均相反应 |
| 收稿时间： | 2003-07-30 |
| 修稿时间： | 2004-6-8 |
FORMATION OF POLYCHLORINATED DIBENZO-p-DIOXINS AND DIBENZOFURANS FROM PENTACHLOROPHENOL ON FLY ASH SURFACE |
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| CHEN Tong,LI Xiaodong,YAN Jianhua,HUANG Lei,LU Shengyong,GU Yueling,CEN Kefa. FORMATION OF POLYCHLORINATED DIBENZO-p-DIOXINS AND DIBENZOFURANS FROM PENTACHLOROPHENOL ON FLY ASH SURFACE[J]. Journal of Chemical Industry and Engineering(China), 2004, 55(10): 1696-1701 |
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| Authors: | CHEN Tong LI Xiaodong YAN Jianhua HUANG Lei LU Shengyong GU Yueling CEN Kefa |
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| Abstract: | Pentachlorophenol (PCP) spiked into fly ash were thermally treated under different conditions in a tubular furnace.The levels and profiles of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs) produced from that were studied.PCDD/Fs existed in the gas phase mainly.The fraction of PCDDs was higher than that of PCDFs and the major homologues were HxCDD, HpCDD and OCDD.The effects of fly ash levels and oxygen content on the formation of PCDD/Fs were investigated.The levels of PCDD/Fs increased with the increase of fly ash.The levels of PCDD/Fs and I-TEQ value were lowest when the oxygen content in the gas stream was 6.7%.In addition, the mass balances of PCDD/Fs were presented. |
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| Keywords: | fly ash pentachlorophenol precursor compound polychlorinated dibenzo-p-dioxins and dibenzofurans heterogeneous reaction |
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