Sustainable Mining and Metallurgy

The flue gas treatment system of a lead smelter has certain instability, and the emission of SO₂ and NO_x can’t meet the environmental protection requirements. This paper introduced the basic situation of organic amine desulfurization technology in the original flue gas treatment process, discussed the problems existing in the current process, and put forward improvement measures, including adjusting the direction of desulfurization flue gas and amine liquid, increasing ozone denitrification system, and ensuring that environmental protection facilities are compatible with production capacity. The flue gas treatment process after the transformation was optimized from the aspects of amine liquid selection, flue gas purification, amine liquid desalination, flue gas temperature and so on. After the transformation and optimization of the flue gas treatment system, the emissions of SO₂ and NO_x are up to standard.