中文摘要：

针对铁矿石载氧体,在流化床上进行了模拟煤气成分化学链燃烧循环试验研究.结果表明,在反应初期可得到高浓度的CO2,CO的转化率随着循环次数的增加先减少后增加,H2的转化率在整个循环过程中为100%;CO2的收率随循环次数的增加先缓慢增加最后趋于稳定;该铁矿石载氧体在多次循环反应中保持了很高的活性,开始几个循环中,随循环次数的增加,载氧体的活性也增强,然后趋于稳定;载氧体的氧化对于载氧体的性能非常重要,是保持载氧体持续循环反应能力的重要条件.

英文摘要：

Experimental study was carried out for chemical-looping combustion of simulated gas with iron-based oxygen carriers in a fluidized bed.Experimental results show that high CO2 concentration can be obtained at initial reactions.The conversion of CO decreases first and increases thereafter with reduction/oxidization cyclic numbers,while the H2 conversion remains 100% during the whole process of experiments.The yield of CO2 gradually increases and finally remains constant with cyclic numbers.The reactivity of oxygen carriers is high during reduc-tion/oxidization cyclic reactions.With the increase of cyclic numbers,their reactivity increased and finally reaches maximum.The oxidization process is very important for the performance of oxygen carriers,and is thus essential for oxygen carriers to keep high reactivity.