Characteristics of PCDD/F emissions from secondary copper smelting industry

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題名:	Characteristics of PCDD/F emissions from secondary copper smelting industry
作者:	張木彬;Hung, Pao Chen;Chang, Chia Chia;Chang, Shu Hao;Chang, Moo Been
貢獻者:	工學院環境工程研究所
關鍵詞:	Air Pollutants - analysis;Air Pollution - analysis;Air Pollution - prevention & control;Benzofurans - analysis;Coal Ash - analysis;Copper;Dibenzofurans, Polychlorinated;DUSTS;Emissions control;emissions factor;flue gas;Flue gases;fly ash;Formations;INDUSTRIAL APPLICATIONS;industry;Inlets;MELTING;Metallurgy;Operating temperature;polychlorinated dibenzodioxins;Polychlorinated Dibenzodioxins - analogs & derivatives;Polychlorinated Dibenzodioxins - analysis;polychlorinated dibenzofurans;Recycling - methods;Recycling - standards;Residues;Smelting;Taiwan;temperature
日期:	2015-01-01
上傳時間:	2026-04-23 15:00:27 (UTC+8)
出版者:	Elsevier Ltd.;England
摘要:	摘要： Characteristics and mechanisms of PCDD/F formation with different feed materials in secondary copper smelting industry are investigated. The results indicate that PCDD/Fs are significantly formed even with the reaction time less than 0.1s, especially when the material containing high residues (Cu3) is fed. High copper content (65±2%) in the feed material enhances PCDD/F formation rate. Memory effect and de novo synthesis are two important mechanisms leading to PCDD/F formation. PCDD/F concentrations at the cyclone's inlet are between 2.92 and 12.4ng-TEQNm(-3) and increase with increasing residue content in the feed material. Two regions are identified for high potential of PCDD/F formation including the brass melt surface of the induction furnace and piping before the induced draft fan of the inlet hood. PCDD/Fs in flue gas are effectively removed with a cyclone and bag filter at low operating temperatures (<60°C) to meet the emission limit of 1.0ng-TEQNm(-3). 1,2,3,4,6,7,8-HpCDF has the largest mass fraction of PCDD/Fs and can serve as a fingerprint for emissions from secondary copper smelting processes. The total emission factor of PCDD/Fs from flue gas, residual and fly ash in the secondary copper smelting process investigated is 22.01μg-TEQtonne(-1). 其他題名： Chemosphere 出版者： England 出版日期： 2015-01 出處： Chemosphere (Oxford), 2015-01, Vol.118, p.148-155 版權： Copyright © 2014 Elsevier Ltd. All rights reserved. 識別號： ISSN: 0045-6535 識別號： ISSN: 1879-1298 識別號： EISSN: 1879-1298 識別號： DOI: 10.1016/j.chemosphere.2014.07.064 識別號： PMID: 25150827
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