中文摘要：

在固定床吸附机理研究实验台上，利用汞在线分析仪研究了超声波辅助沉淀法制备的氧化铁吸附剂在N，和模拟煤气气氛下对单质汞的吸附作用，分析煤气中气体成分对氧化铁吸附剂脱汞性能的影响．实验结果表明：氧化铁吸附剂在纯Nz气氛下的脱汞效率较低；H2S可以促进氧化铁吸附剂对汞的吸附脱除，脱汞效率能够长时间维持在90％以上；在吸附床温度为150℃条件下，模拟煤气中的还原性气体CO和H2对氧化铁吸附剂的脱汞性能影响不大；模拟煤气中水蒸气抑制了氧化铁吸附剂对单质汞的吸附脱除；随着吸附床温度的升高，氧化铁吸附剂的脱汞效率先增高，而后逐渐降低．

英文摘要：

The adsorption of gas-phase elemental mercury by iron oxide adsorbent synthesized by an ultrasonic- assisted precipitation method under nitrogen and simulated gas atmosphere was studied on a bench-scale fixed-bed apparatus by using mercury online analyzer. And the effect of various gases on Hg0 removal performance by iron oxide adsorbent was analyzed. The result showed that the mercury removal efficiency of iron oxide adsorbent is low under N2 atmosphere. H2S promotes the Hg0removal by iron oxide adsorbent. The iron oxide adsorbent has a high mercury removal efficiency under H2S atmosphere and the mercury removal efficiency can be maintained above 90% for a long time. The effects of CO and H2 were not observed at 150 ℃. H2O suppressed the mercury removal at 150℃. With the increase of adsorption temperature, the elemental mercury removal efficiency increases first and then gradually de- creases.