中文摘要：

利用汞渗透管产生的汞蒸气和基本气体成分，在小型固定床试验台上研究了飞灰用量、吸附温度、汞进气浓度及飞灰颗粒大小等因素对燃煤飞灰吸附气态汞的影响．研究表明：在40～120℃内，飞灰对汞的吸附主要是物理吸附，飞灰对汞的吸附效率随着温度的上升而下降；随着汞入口浓度的增大，飞灰的汞吸附效率先降低再升高，飞灰的汞相对吸附量增加；飞灰粒径在50～74μm时可能达到最佳的汞吸附效果．较高的飞灰量、较低的汞进气浓度和吸附温度，以及合适的粒径范围均有利于飞灰对汞的吸附．

英文摘要：

Using mercury vapor generated in mercury penetration tube and basic gaseous components, the influences of fly ash amount, adsorption temperature, inlet mercury concentration and fly ash particle size on the adsorption of mercury vapor by coal-fired fly ash were studied in a bench-scale fixed-bed test rig. Results show that, between temperature range of 40～120 ℃, the major adsorption of mercury by fly ash is a physical action and the adsorption rate decreases with temperature increasing. With increasing inlet mercury concentration, the mercury adsorption rate of fly ash reduces at first and then increases. The higher the inlet mercury concentration is, the higher the relative mercury adsorption amount of fly ash is. When diameter of fly ash particles ranges at 50～74μm, the optimal mercury adsorption effect could be obtained. The higher fly ash amount, lower inlet mercury concentration and adsorption temperature, as well as appropriate range of particle diameters are all helpful to mercury adsorption.