载硫椰壳活性炭喷射脱汞实验研究  

Experimental Study on Mercury Adsorption of S-Impregnated Coconut Shell Activated Carbon by Duct Injection

作　　者：洪亚光 段钰锋[1] 朱纯[1] 周强[1] 佘敏[1] 杜鸿飞[1] 

机构地区：[1]能源热转换及其过程测控教育部重点实验室(东南大学),南京210096

出　　处：《工程热物理学报》2015年第5期1135-1138,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.51376046;No.51076030);江苏省研究生科研创新计划项目资助项目(No.CXZZ13_0093;No.KYZX_0115;No.KYZX_0184);中央高校基本科研业务费专项资金资助;国家科技支撑计划项目(No.2012BAA02B01-02);江苏省产学研联合创新基金(No.BY2013073-10)

摘　　要：以元素硫对椰壳活性炭在不同温度下进行载硫改性。采用N2吸附/脱附、X射线近边吸收结构等方法对吸附剂进行孔隙结构和硫存在形态表征。在模拟烟气管道喷射实验装置上进行汞吸附脱除实验研究。载硫温度500℃时椰壳活性炭汞吸附效率优于商用富硫活性炭。活性炭汞吸附脱除能力由孔隙结构、硫含量与存在形态共同决定。不同体积分数SO_2、NO和HCl的加入对活性炭均有不同程度的促进作用。Coconut shell activated carbon was impregnated with elemental sulfur at different temperatures for modification to prepare the high effective mercury adsorbent.The prepared activated carbons were characterized by means of nitrogen(N_2) adsorption/ desorption,and X-ray absorption near-edge structure(XANES).Experimental studies on Hg removal were investigated in an entrained flow reactor system.Coconut shell activated carbon impregnated with elemental sulfur at 500℃performed better mercury adsorption capacity than commercially used activated carbon with high sulfur content.Porous structure,sulfur content,and sulfur forms of the adsorbent were important for Hg adsorption.The addition of different flue gas components(SO_2,NO,HCl) in varying degrees promoted mercury adsorption efficiency of activated carbon.

关 键 词：改性 喷射 脱汞 硫形态 烟气组分 

分 类 号：X701[环境科学与工程—环境工程] TQ424.1[化学工程]