Simultaneous removal of SO2 and NOx from sintering flue gas using ammonia-Fe(II)EDTA combined with electrolytic regeneration

• Autorzy: Liang Y. , Yao X. , Quin L. , Chen W. , Han J.

Identyfikatory

DOI

10.5277/epe180202

• Języki publikacji: EN

Abstrakty

EN

Sulfur dioxide and nitrogen oxide are health hazardous gases, which contribute to the formation of submicron acidic particulates. To reduce SO₂ and NO_x emission from the sintering flue gas, the combination of ammonia-Fe(II)EDTA solution scrubbing with Fe(III) electrolytic regeneration is proposed. The above method has the following advantages: direct conversion of NO_x and SO₂ to harmless N₂ and SO₄²⁻, recovery of the by-product (NH₄)₂SO₄), simultaneous removal of NO_x and SO₂ emission from flue gas in the reactor. The effect of the pH, initial Fe(II)EDTA concentration, and voltage on the desulfurization and denitration efficiencies was investigated using a bench-scale reactor. The maximal desulfurization and denitration efficiencies were 98% and 52%, respectively. The optimum parameters were pH ˃ 5.0, 2.1 V, and 0.05 mol·dm^–3 Fe(II)EDTA concentration. SO₂ and NO_x removal from the sintering flue gas by ammonia-Fe(II)EDTA solution scrubbing combined with electrolytic regeneration was also demonstrated in a pilot-scale reactor.

Słowa kluczowe

EN

ammonia; desulfurization; flue gases; nitrogen oxides; nitrogen removal; sintering sulfur dioxide

PL

amoniak; odsiarczanie; gazy odlotowe; tlenki azotu; usuwanie azotu; spiekanie; ditlenek siarki

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Environment Protection Engineering
• Rocznik: 2018
• Tom: Vol. 44, nr 2
• Strony: 19--36
• Opis fizyczny: Bibliogr. 21 poz., tab., rys.

Twórcy

autor

Liang Y.

• Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology, Wuhan, 430081, P.R. China

autor

Yao X.

• Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology, Wuhan, 430081, P.R. China

autor

Quin L.

• Industrial Safety Engineering Technology Research Center of Hubei Province, Wuhan University of Science and Technology, Wuhan, 430081, P.R. China.

autor

Chen W.

• Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology, Wuhan, 430081, P.R. China

autor

Han J.

• Hubei Key Laboratory for Efficient Utilization and Agglomeration of Metallurgic Mineral Resources, Wuhan University of Science and Technology, Wuhan, 430081, P.R. China Industrial Safety Engineering Technology Research Center of Hubei Province, Wuhan University of Science and Technology, Wuhan, 430081, P.R. China.

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).