Research status and prospect of poisoning in denitration catalysts |
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| Authors: | WEN Zhenjing HUANG Bangfu YANG Zhengyu DAI Meng LI Wanjun |
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| Affiliation: | 1.Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology，Kunming 650093, Yunnan, China；2.Clean Metallurgy Key Laboratory of Complex Iron Resources, University of Yunnan Province， Kunming 650093, Yunnan, China |
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| Abstract: | Denitration catalysts are easily poisoned by complex components of flue gas. As flus gas poisoning was a major cause of catalyst deactivation, low temperature catalysts with strong anti poisoning ability were actively researched. The research status of poisoning in denitration catalysts was summarized, focusing on the poisoning mechanisms of SO2 and H2O, alkali metals (K), alkaline earth metals (Ca, Mg), and heavy metals (Zn) in the industrial flue gas. Despite remarkable advances, the poisoning mechanism of carbon based catalysts remained poorly understood. The poisoning mechanism of heavy metals on carbon based catalysts, especially the poisoning mechanism of zinc, was recommended for future work. The prospects of improving the resistance of catalysts to sulfur and water, alkali and alkaline earth metals, and heavy metal poisoning, were also discussed. |
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| Keywords: | Key words：denitrification； selective catalytic reduction； poisoning； carbon based catalyst flue gas |
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