高效脱汞吸附剂的脱汞机理研究  

Study on the Mercury Removal Mechanism of Adsorbents

作　　者：谭增强[1] 邱建荣[1] 苏胜[1] 李允超[1] 刘子红[1] 曹蕃[1] 曾汉才[1] 向军[1] 

机构地区：[1]煤燃烧国家重点实验室(华中科技大学),湖北武汉430074

出　　处：《工程热物理学报》2012年第2期344-347,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项日(No.51078163;No.51021065;No 21176098);校研究生创新基金(No.HF-09-10-2011-121)

摘　　要：将廉价的生物质竹炭进行KI化学改性,在小型实验台架上研究了改性竹炭的的汞脱除性能,并对改性前后的样品进行了XPS表征和热分析以研究表面官能团在改性过程中的转化规律和脱汞机理。结果表明:碘化学改性竹炭具有超强的脱汞能力,改性后竹炭具有更多的利于脱汞的官能团,其主要靠化学吸附脱汞。The low-cost bamboo charcoal was modified by KI and used for mercury removal on a bench-scale fixed-bed reactor. BET, XPS and thermal analysis were used to determine the pore structure and surface chemistry of the sorbents. The characterization of the physical and chemical properties of sorbents in relation to Hg0 adsorption capacity provided important information on the Hg0 adsorption mechanism. The experimental results implied that the modified BCs have excellent adsorption potential for elemental mercury. The modification has increased the sorbents＇ active sites for mercury adsorption and the chemisorption dominated mechanism has been further confirmed.

关 键 词：汞 竹炭 KI 机理分析 

分 类 号：TK16[动力工程及工程热物理—热能工程]