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中文摘要：
为了揭示天然矿物材料吸附剂的脱汞机理，在固定床反应器上研究了凹凸棒石、丝光沸石、膨润土和蛭石4种硅酸盐矿物吸附剂对模拟烟气中单质汞的脱除能力。利用X射线衍射仪和比表面积与孔径测定仪对4种吸附剂进行了表征，采用VM3000在线测汞仪（CEMS）对单质汞的进出口浓度进行实时检测并利用QM201型原子荧光测汞仪对实验后样品中的汞含量进行了消解测定。分别探讨热活化和吸附温度的影响，对比4种吸附剂的吸附效率。结果表明热活化未提高4种吸附剂对单质汞的脱除能力；提高吸附温度有利于对单质汞的脱除；4种吸附剂对汞的吸附并不是单纯的物理吸附；在30min内膨润土的吸附率为1029ng／g，是凹凸棒石的近2倍，在120℃时丝光沸石表现出对单质汞的氧化能力，而其本身吸附效果不明显。
英文摘要：
In order to reveal the mechanism of mercury adsorption by nature mineral sorbents, four silicate sorbents （attapulgite, mordenite, bentonite and vermiculite） were tested in a laboratory-scale fixed-bed reactor system to evaluate their ability of mercury removal from simulated flue gas. The characterization of four sorbents was analyzed using the accelerated surface area porosity and X-ray diffraction （XRD）. The inlet and outlet Hg^0 concentrations were detected using VM3000 online mercury analyzer （CEMS）, and mercury content of samples was also measured using QM201 atomic fluorescence mercury analyzer. The effect of thermal activation and reaction temperature were considered in the tests. Results show that the after thermal performance of four sorbents activation, Appropriately is not enhanced increasing the adsorption temperature improves the mercury removal, It is worth noting that the mechanism of mercury removal is not just a physical adsorption. In the first 30 min, the mercury adsorption rate for bentonite is 1 029 ng/g, which is double of that for attapulgite. Mordenite shows poor absorption capacity, but it displays the ability to oxidize element mercury at 120℃.
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