PAH emissions from coal combustion and waste incineration

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題名:	PAH emissions from coal combustion and waste incineration
作者:	張木彬;Hsu, Wei Ting;Liu, Mei Chen;Hung, Pao Chen;Chang, Shu Hao;Chang, Moo Been
貢獻者:	工學院環境工程研究所
關鍵詞:	activated carbon;Activated carbon adsorption;Catalysts;Catalytic filter;coal;Coal fired powerplants;Coal-fired power plant;combustion;Emission;Emissions control;emissions factor;environmental impact;flue gas;Fly ash;incinerators;Municipal waste incinerator;Polyallylamine hydrochloride;Polycyclic aromatic hydrocarbons;power plants;Sampling;Selective catalytic reduction;waste incineration
日期:	2016-11-15
上傳時間:	2026-04-23 15:06:40 (UTC+8)
出版者:	Elsevier;Netherlands: Elsevier B.V
摘要:	摘要： •Waste incineration generates more PAHs than coal combustion.•Significant formation of PAHs is found within SCR due to high PM concentration and high operating temperature.•Catalytic filtration is more effective in reducing PAHs discharge than ACI+BF.•Emission factors of PAHs from coal combustion and waste incineration are established. The characteristics of PAHs that are emitted by a municipal waste incinerator (MWI) and coal-fired power plant are examined via intensive sampling. Results of flue gas sampling reveal the potential for PAH formation within the selective catalytic reduction (SCR) system of a coal-fired power plant. In the large-scale MWI, the removal efficiency of PAHs achieved with the pilot-scaled catalytic filter (CF) exceeds that achieved by activated carbon injection with a bag filter (ACI+BF) owing to the effective destruction of gas-phase contaminants by a catalyst. A significantly lower PAH concentration (1640ng/g) was measured in fly ash from a CF module than from an ACI+BF system (5650ng/g). Replacing the ACI+BF system with CF technology would significantly reduce the discharge factor (including emission and fly ash) of PAHs from 251.6 to 77.8mg/ton-waste. The emission factors of PAHs that are obtained using ACI+BF and the CF system in the MWI are 8.05 and 7.13mg/ton, respectively. However, the emission factor of MWI is significantly higher than that of coal-fired power plant (1.56mg/ton). From the perspective of total environmental management to reduce PAH emissions, replacing the original ACI+BF process with a CF system is expected to reduce environmental impact thereof. 其他題名： J Hazard Mater 出版者： Netherlands: Elsevier B.V 出版日期： 2016-11-15 出處： Journal of Hazardous Materials, 2016-11, Vol.318, p.32-40 版權： 2016 Elsevier B.V. 版權： Copyright © 2016 Elsevier B.V. All rights reserved. 識別號： ISSN: 0304-3894 識別號： EISSN: 1873-3336 識別號： DOI: 10.1016/j.jhazmat.2016.06.038 識別號： PMID: 27391862
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