Measurement of polychlorinated dibenzo-p-dioxin and dibenzofuran emission from EAF steel making proces

• Autorzy: Sofilić T. , Jendricko J. , Kovacević Z. , Ćosić M.

Warianty tytułu

PL

Badania emisji wielochlorkowych dibenzo-p-dioksyn i dibenzofuranów z procesu wytwarzania stali w piecu łukowym

• Języki publikacji: EN

Abstrakty

EN

Electric arc furnace (EAF) steel manufacturing is an important recycling activity which contributes to the recovery of steel resources and steel scrap/waste minimization. Because of the content of plastics, coatings and paintings as well as other nonferrous materials in the charge during melting, a strong emission of pollutants, including polluting substance group consists of persistent organic pollutions (POPs) represented by polycyclic aromatic hydrocarbon (PAH), polychlorinated biphenyls (PCBs), polychlorinated dibenzo-p-dioxins (PCDDs), and polychlorinated dibenzofurans (PCDFs) occurs. This study was set out to investigate emissions of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDDs/Fs) from the stack of a new electric-arc furnace-dust treatment plant installed during modernisation of the Melt Shop in CMC SISAK d.o.o., Croatia. Obtained results have been compared with previously obtained results of PCDDs/Fs emission measurements from the old electric-arc furnace dust treatment without dust drop-out box, as well as quenching tower. The total PCDDs/Fs concentration in the stack off gases of both electric arc furnaces EAF A and EAF B were 0.2098 and 0.022603 ng I-TEQ/Nm3 respectively, and these results are close to previous obtained results by other authors. The calculated values of the emission factors for PCDDs/Fs calculated on the basis of measured PCDDs/Fs concentration in the stack off gases in 2008 and 2011 were 1.09 and 0.22 ng I-TEQ/ ton steel, respectively.

PL

Produkcja stali w piecu łukowym (EAF) jest ważnym elementem recyklingu stali co przyczynia sie do odbudowy zasobów stali i wykorzystania złomu i odpadów stalowych. Ze względu na zawartość tworzyw sztucznych, powłok i farb, jak również innych materiałów niezależnych we wsadzie, podczas topienia występuje silna emisja zanieczyszczeń, w tym grupy substancji składającej sie z trwałych zanieczyszczeń organicznych (POP) takich jak wielopierścieniowe węglowodory aromatyczne (PAH), wielochlorowe bifenyle (PCB), wielochlorowe dibenzo-[1,4]-dioksyny (PCDD) i wielochlorowe dibenzofurany (PCDF). Celem pracy jest zbadanie emisji wielochlorowych dibenzo-[1,4]-dioksyn i dibenzofuranów z nowego układu odpylania zainstalowanego w piecu łukowym w trakcie modernizacji huty CMC Sisak w Chorwacji. Uzyskane wyniki porównano z poprzednio uzyskanymi wynikami pomiarów emisji dioksyn i dibenzofuranów ze starego układu oczyszczania pyłów z pieca łukowego. Całkowite stężenie dioksyn i dibenzofuranów w gazach odlotowych z pieców łukowych A i B wynosi odpowiednio 0,2098 i 0,022603 ng I-TEQ/Nm3, i te wyniki są zbliżone do poprzednich uzyskanych wyników przez innych autorów. Obliczone wartości wskaźników emisji dioksyn i dibenzofuranów na podstawie zmierzonych koncentracji dioksyn i dibenzofuranów w gazach odlotowych w 2008 i 2011 wynosiły odpowiednio 1,09 i 0,22 ng I-TEQ / tonę stali.

Słowa kluczowe

EN

persistent organic pollutions; EAF; PCDDs/Fs; dioxins

PL

produkcja stali; EAF; piece łukowe

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2012
• Tom: Vol. 57, iss. 3
• Strony: 812--821
• Opis fizyczny: bibliogr. 36 poz., rys., tab., wykr.

Twórcy

autor

Sofilić T.

autor

Jendricko J.

autor

Kovacević Z.

autor

Ćosić M.

• CMC Sisak d.o.o., Brace Kavuric 12, 44010 Sisak, Croatia

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