以市售商业载硫活性炭为研究对象，在固定床实验台上进行汞吸附实验，分析吸附温度、入口汞浓度对其脱汞性能的影响，通过表征方法对失活前后吸附剂的物理化学性质进行对比，采用程序升温热脱附实验得到样品中吸附的汞形态，并探究其脱汞机理。结果表明：实验样品的适宜脱汞温度为70 ℃，脱汞效率随着汞浓度的升高而降低；活性炭样品失活后比表面积下降，表面含氧官能团减少，非氧化态硫含量降低，其汞吸附形态以HgS、HgO为主；载硫活性炭样品对汞的吸附脱除主要依靠含氧官能团和含硫官能团的化学吸附作用。

A commercial sulfurloaded activated carbon was used as sorbent in this paper,and mercury adsorption experiments were carried out on a fixedbed experimental device.The effects of adsorption temperature and inlet mercury concentration on the adsorbent performance of the sorbent were studied,and the physicochemical properties of the sorbent before and after adsorption were compared.The mercury adsorption morphology of activated carbon was obtained by temperature programmed thermal desorption experiment,and the mechanism of mercury removal was also explored.The results showed that,the suitable mercury removal temperature is 70 ℃,and the mercury removal efficiency decreases with the increase of mercury concentration.After deactivation,the specific surface area decreases,the surface of the support is destroyed and the oxygen functional groups on the surface and the content of nonoxidized sulfur decrease.The main adsorption morphology of sulfurloaded activated carbon is HgS.It is concluded that the removal of mercury by sulfurloaded activated carbon is due to the chemical adsorption of oxygencontaining functional groups and sulfurcontaining functional groups..

TQ534.9

国家重点研发计划（2016YFB0600203）