Ore sintering flue gas desulfurization and its resoureilization by using pyrolusite

2017 International Conference on New Energy and Future Energy System

Li, S.E.^1,2 ; Long, Z.G.^3 ; Wu, F.Z.^1,2 ; Li, H.Y.^1,2 ; Cui, T.M.^1,2 ; Zhou, X.Z.^4

College of Materials and Metallurgy, Guizhou University, Guiyang

550003, China^1

Guizhou Province Key Laboratory of Metallurgical Engineering and Process Energy Saving, Guizhou University, Guiyang

550003, China^2

School of Marxism, Guizhou University, Guiyang

550003, China^3

Library, Guizhou University of Finance and Economics, Guiyang

550003, China^4

关键词: Absorption temperature;    Desulfurization rate;    Flue gas desulfurization;    Flue gas desulfurization(FGD);    Gas emission reduction;    Industrial flue gas;    Middle temperatures;    Operating condition;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/93/1/012032/pdf
DOI  :  10.1088/1755-1315/93/1/012032

来源: IOP

【 摘 要 】

Flue gas desulfurization (FGD) has been implemented for sulfur dioxide gas emission reduction by pyrolusite in iron ore sintering. However, the mechanism of SO2reduction through FGD is still not fully clear. And in present work, the effects of operating conditions on desulfurization rate and Mn2+leaching rate of pyrolusite were investigated. Six hours later, the desulfurization rate and Mn2+leaching rate all can be higher than 70%. And a higher absorption temperature was good for desulfurization rate, while a middle temperature was good for Mn2+leaching rate. A higher manganese ore granularity and SO2concentration were good for desulfurization rate and Mn2+leaching rate. However, a higher liquid-solid rate was only good for desulfurization rate, but Mn2+leaching rate. The results demonstrate that the pyrolusite is a kind of very promising adsorbent in industrial flue gas desulfurization application due to its low cost and good desulfurization capacity.