Study on mechanism of mercury oxidation by fly ash from coal combustion

查看全文 作　　者：ZHAO [1]YongChun;ZHANG [1]JunYing;LIU [1]Jing;DIAZ-SOMOANO [2]Mercedes;MARTINEZ-TARAZONA M. [2]Rosa;ZHENG [1]ChuGuang

机构地区：[1]State Key Laboratory of Coal Combustion, Huazhong University of Science & Technology, Wuhan 430074, China;[2]Instituto Nacional del Carbon ( CSIC), Francisco Pintado Fe 26, 33011, Oviedo, Spain

出　　处：《Chinese Science Bulletin》索引2010年第55卷第2期,共5页

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 50906031, 50721005, 20877030);National Basic Re-search Program of China (Grant No. 2006CB200304);China Postdoc-toral Science Foundation Funded Project 摘　　要：To understand the interaction of fly ash and mercury, systematic experiments on mercury oxidation in single flue gas composition are conducted on a fixed bed reactor system, the desorption rate and speciation of mercury are valuated. The results indicate that fly ash itself can significantly promote elemental mercury oxidation. A classification of fly ash activated sites is developed according to the speciation of mercury during adsorption-desorption tests, the reaction mechanism of mercury oxidation by fly ash is proposed. Acid gas can promote mercury oxidation and improve the stability of oxidation product. Lattice oxygen is an important oxidant of mercury oxidation. 关键词：氧化机制粉煤灰煤炭燃烧汞反应器系统氧化反应机理相互作用烟气成分

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Study on mechanism of mercury oxidation by fly ash from coal combustion

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