Enhancing SO2 removal efficiency by lime modified with sewage sludge in a novel integrated desulfurization process

• Autorzy: Qin L. , Han J. , Chen W. , Liu Z. , He M. , Xing F.

Identyfikatory

DOI

10.5277/epe170402

• Języki publikacji: EN

Abstrakty

EN

In China, the sintering process annually emitted around 1.5 million t SO₂, representing 70% of SO₂ produced from the iron and steel industry. Lime based sorbent was modified with municipal sewage sludge (MSS) and the influence of the modification on the desulfurization efficiency was investigated in a laboratory-scale novel integrated desulfurization (NID) reactor. The properties of modified sorbent were characterized by the Brunauer–Emmett–Teller (BET) analyzer and X-ray fluorescence (XRD) analyzer. BET surface area was increased from 17.48 to 46.68 m²g^–1. when the MSS/lime ratio increased from 0 to 0.08. Ca₄Al₈Si₈O₃₂, Ca_1.5SiO_3.5, Na₂Si₂O₅ and CaSiO₃ found in the modified lime benefited for the increase of the BET surface area and pore volume. The effects of sewage sludge/CaO weight ratio, calcination temperature and hydration time on the desulfurization efficiency were also studied. SO₂ removal efficiency was increased from 88.7% to 97.3% after using the lime modified with sewage sludge.

Słowa kluczowe

EN

sewage sludge; steel industry; sintering process

PL

osad ściekowy; przemysł hutniczy; proces spiekania

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Environment Protection Engineering
• Rocznik: 2017
• Tom: Vol. 43, nr 4
• Strony: 17--27
• Opis fizyczny: Bibliogr. 25 poz., tab., rys.

Twórcy

autor

Qin L.

• College of Resources and Environment Engineering, Wuhan University of Science and Technology, Wuhan 430081, Hubei, P.R. China

autor

Han J.

• College of Resources and Environment Engineering, Wuhan University of Science and Technology, Wuhan 430081, Hubei, P.R. China

autor

Chen W.

• College of Resources and Environment Engineering, Wuhan University of Science and Technology, Wuhan 430081, Hubei, P.R. China

autor

Liu Z.

• College of Resources and Environment Engineering, Wuhan University of Science and Technology, Wuhan 430081, Hubei, P.R. China

autor

He M.

• College of Resources and Environment Engineering, Wuhan University of Science and Technology, Wuhan 430081, Hubei, P.R. China

autor

Xing F.

• College of Resources and Environment Engineering, Wuhan University of Science and Technology, Wuhan 430081, Hubei, 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).