燃煤烟气中脱汞吸附剂的性能实验研究  

Experiment Research of Sorbents to Remove Mercury from Coal-Fired Flue Gas

作　　者：薛长海 李鑫 耿合先 于红广 程伟[3] 张安超[3] 

机构地区：[1]焦作电厂,河南焦作454159 [2]新乡豫新发电有限公司,河南新乡453011 [3]华中科技大学煤燃烧国家实验室,湖北武汉430074

出　　处：《华中电力》2009年第4期1-3,8,共4页Central China Electric Power

基　　金：国家自然科学基金(50776037)

摘　　要：利用制备的壳聚糖吸附剂在一维煤粉炉进行烟气除汞实验,实验发现:壳聚糖类吸附剂可以有效脱除燃煤烟气中的汞,最高效率可达到96%;并利用红外光谱分析了其微观结构,揭示了壳聚糖类吸附剂吸附螯合痕量重金属汞汞机理为4个游离氨基螯合1个汞或2个游离氨基和2个羟基协同螯合一个汞,其中氨基是主要反应活性基。A one-dimensional furnace test bench experilnent was conducted to study the Chitosan sorbent＇s adsorption efficiency of mercury in coal-fired flue gas. Three kinds of modified Chitosan（CTS）sorbents are prepared to remove the mercury in the flue gas. The CTS sorbents exhibit high mercury removal efficiency, as much as 96%. Fresh and after adsorption of the same kind ofsorbents were compared by using Fourier transform infrared spectroscopy （FTIR）. The results show that the mechanism of CTS removing mercury is that 4 free aminos （-NH2）chelated 1 mercury or 2 free aminos and 2 hydroxyls（-OH）chelated 1 mercury. The free amino is the main active group.

关 键 词：汞 红外光谱 吸附 

分 类 号：X773[环境科学与工程—环境工程]