![Evaluation of the emission characteristics of PCDD/Fs from electric arc furnaces [An article from: Chemosphere]](https://www.ebooknetworking.net/books/B00/0RR/bigB000RR5KOW.jpg)
Evaluation of the emission characteristics of PCDD/Fs from electric arc furnaces [An article from: Chemosphere]
Book Details
PublisherElsevier
ISBN / ASINB000RR5KOW
ISBN-13978B000RR5KO7
AvailabilityAvailable for download now
Sales Rank99,999,999
MarketplaceUnited States 🇺🇸
Description
This digital document is a journal article from Chemosphere, published by Elsevier in . The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.
Description:
Distribution of PCDD/F (polychlorinated dibenzo-p-dioxin and polychlorinated dibenzofuran) congeners at two electric arc furnaces (EAFs) in Taiwan is evaluated via intensive stack sampling and analysis. Two kinds of exhaust system in EAFs including stack system and shutter system are selected for measuring dioxin emissions. In addition, dioxin emissions during oxidation and reduction stages at EAF-A were characterized. Results indicate that the PCDD/F concentration of stack gas in EAF-A was 4.39ng/Nm^3 while total Toxic Equivalent Quantity (TEQ) concentration was 0.35ng I-TEQ/Nm^3. The PCDD/F concentration of stack gas in EAF-B was 2.20ng/Nm^3 and the TEQ concentration was 0.14ng I-TEQ/Nm^3. 1,2,3,4,6,7,8-H"pCDF, OCDD and OCDF are the major contributors of the dioxin concentrations for two EAFs investigated and the percentage of PCDD/F in particulate phase increases as the chlorination level of the PCDD/F congener increases. The results obtained on gas/particulate partitioning of PCDD/Fs in flue gases prior to the APCD in EAFs indicate that more than 90% exists in particulate phase. In EAF-A, the PCDD/F concentration during oxidation stage is slightly higher than that measured during reduction stage, including the sampling points of CO converter outlet, prior to bag filter and stack. Majority of PCDD/Fs emitted from steel-making processes exists in particulate-phase (about 60-70%) at both EAFs investigated.
Description:
Distribution of PCDD/F (polychlorinated dibenzo-p-dioxin and polychlorinated dibenzofuran) congeners at two electric arc furnaces (EAFs) in Taiwan is evaluated via intensive stack sampling and analysis. Two kinds of exhaust system in EAFs including stack system and shutter system are selected for measuring dioxin emissions. In addition, dioxin emissions during oxidation and reduction stages at EAF-A were characterized. Results indicate that the PCDD/F concentration of stack gas in EAF-A was 4.39ng/Nm^3 while total Toxic Equivalent Quantity (TEQ) concentration was 0.35ng I-TEQ/Nm^3. The PCDD/F concentration of stack gas in EAF-B was 2.20ng/Nm^3 and the TEQ concentration was 0.14ng I-TEQ/Nm^3. 1,2,3,4,6,7,8-H"pCDF, OCDD and OCDF are the major contributors of the dioxin concentrations for two EAFs investigated and the percentage of PCDD/F in particulate phase increases as the chlorination level of the PCDD/F congener increases. The results obtained on gas/particulate partitioning of PCDD/Fs in flue gases prior to the APCD in EAFs indicate that more than 90% exists in particulate phase. In EAF-A, the PCDD/F concentration during oxidation stage is slightly higher than that measured during reduction stage, including the sampling points of CO converter outlet, prior to bag filter and stack. Majority of PCDD/Fs emitted from steel-making processes exists in particulate-phase (about 60-70%) at both EAFs investigated.
