高分子化合物壳聚糖脱除燃煤烟气中汞的实验研究

在一维炉燃烧实验中采用安大略法和原子吸收光谱法分析测定了燃煤烟气中汞的形态分布和质量，发现烟气中单质汞占多数，与二价汞比为3:2。首次利用自制的壳聚糖类(Chitosan，简称CS)吸附剂对燃煤烟气中的汞进行吸附脱除，效果良好，在80℃吸附率达96.34%，同时对SOx和NOx有一定的脱除效果，并且能有效脱除单质汞，从而提出了干法脱除燃煤烟气重金属的新方法。

Experiment of the Macromolecular Chitosan to Remove Mercury in the Flue Gas of Coal Combustion

A one-dimension furnace test bench experiment is conducted to study the Chitosan sorbent's adsorption efficiency of mercury in coal-fired flue gas. In this work, the method of Ontario Hydro and Atomic Absorption Spectrometry is used to analyze the form distribution and content of the mercury in the flue gas of coal combustion. At the same time, three kinds of modified Chitosan(CS)sorbents are prepared to remove the mercury in the flue gas. The results show that the element mercury is more than bivalent mercury and the ratio is 3:2. The CS sorbents can adsorb Hg0. The mercury adsorption efficiency is 96.34% at 80℃, especially the CS can remove the SOx and NOx simultaneously. The chitosan, it's a new and effective adsorption in the field of heavy metal removing in flue gas.