燃煤烟气脱汞吸附剂的研究进展

Research Development of Adsorbents for Removing Mercury from Coal-Combustion Flue Gas

烟气脱汞主要是先将零价汞氧化为二价汞,再进行脱除。脱汞吸附剂主要包括活性炭、活性焦、飞灰、壳聚糖、粘土、SCR催化剂及其它金属催化剂等。介绍了近年来燃煤烟气脱汞吸附剂的研究进展,简述了不同种类脱汞吸附剂的脱汞效率,并对该领域的研究方向进行了展望。

Removing mercury from flue gas is carried out by oxidating Hg° to Hg^2＋ and then removing it. The common adsorbents for removing mercury include active carbon, active coke, fly ash, chitin, clay, SCR and so on. The research development of adsorbents for removing mercury from coal-combustion flue gas are reviewed, the efficiency of different adsorbents for removing mercury are introduced in brief,and the research trends in this field are prospected.