کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
583034 | 877865 | 2008 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Removal characteristics of PCDD/Fs by the dual bag filter system of a fly ash treatment plant
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
بهداشت و امنیت شیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this study, a dual bag filter system was established to decrease the concentration of polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) in the stack flue gases of a fly ash treatment plant, which retained zinc from the fly ash of electric arc furnaces. Compared to the original single bag filter system with activated carbon injection (ACI) of 40 kg hâ1, the PCDD/F concentrations in the stack flue gas after the plant was equipped with the dual bag filter system dropped enormously from 3.38-7.73 ng I-TEQ N mâ3 to 0.03 ng I-TEQ N mâ3, and the total PCDD/F I-TEQ removal efficiency increased from 97.6% to 99.3% with ACI of 16 kg hâ1, that is, about 40% of the original AC usage. The AC utilization efficiency (0.560 mg I-TEQ absorbed kg ACIâ1) of the dual bag filter system (AC: 16 kg hâ1) was estimated about three times higher than that (0.192 mg I-TEQ absorbed kg ACIâ1) of single bag filter system with ACI (40 kg hâ1). The reason is that the particulate phase PCDD/Fs and some gas phase PCDD/Fs (captured by the recycled AC/ash mixture) were removed first by the first bag filter, and the rest of the gas phase PCDD/Fs were able to be adsorbed more completely by the AC/ash mixture due to a lower fly ash load, and then were removed by the second bag filter.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Hazardous Materials - Volume 153, Issue 3, 30 May 2008, Pages 1015-1022
Journal: Journal of Hazardous Materials - Volume 153, Issue 3, 30 May 2008, Pages 1015-1022
نویسندگان
Wen-Yinn Lin, Lin-Chi Wang, Ya-Fen Wang, Hsing-Wang Li, Guo-Ping Chang-Chien,