Physicochemical properties of activated carbon for sintering flue gas desulfurization and denitrification
ZHAO Hongwei1,2, HUANG Bangfu1,2, LIU Lanpeng1,2, LIU Weisai1,2, ZHAO Simeng1,2
1. Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, China; 2. Clean Metallurgy Key Laboratory of Complex Iron Resources, Kunming 650093, China
Abstract：Activated carbon flue gas purification technology is an advanced technology suitable for sintering flue gas treatment and enabling waste resource utilization. SO2, NOx and other pollutants are adsorbed and catalyzed in the activated carbon tunnel. The adsorption and catalytic properties are mainly depended on the activated carbon physical structure and chemical property. In this study, the physical and chemical properties of coconut shell, nut shell and coal-based activated carbon, such as specific surface area, pore structure, surface morphology, phase composition, constituent elements and surface functional groups were characterized. The results show that the three activated carbons have large specific surface area and are amorphous carbon materials mainly composed of micropores. The main elements are carbon and oxygen, and also contain a small amount of sulfur and chlorine. The coconut shell activated carbon channels are arranged neatly and clearly. It can be seen that the surface of the shell and coal-based activated carbon is uneven, and it is difficult to clearly observe the microporous structure; the surface contains oxygen-containing functional groups closely related to adsorption and catalytic properties. The research results as a basic research on the modification of activated carbon can provide reference for optimizing the modification technology.
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2019, Vol. 24 
