铜锰复合载氧体吸释氧反应性实验研究

摘要 以ZrO2作为惰性载体制备Cu/Mn复合载氧体并在搭建的固定床反应器上研究气体流量、反应温度、进气氧含量和颗粒直径对Cu/Mn载氧体吸释氧反应性的影响.结果表明，随气体流量的增大，Cu/Mn载氧体的释氧和吸氧速率增大;随反应温度的升高，Cu/Mn载氧体的释氧速率增大而吸氧速率减小.释氧反应阶段，供气氧含量越低，Cu/Mn载氧体释氧速率越快；吸氧反应阶段，供气氧含量越高，Cu/Mn载氧体吸氧速率越快.Cu/Mn载氧体的吸释氧速率均随粒径的增加而增大.
Abstract：Cu/Mn composite oxygen carriers were prepared using ZrO2 as binder and the influences of gas flow rate， temperature， inlet oxygen concentration， particle diameter on the oxidation and reduction reactivity of Cu/Mn composite oxygen carriers were examined in a fixed-bed reactor. The results showed that the reduction and oxidation rates increase with the increase of gas flow rate. High temperature favors the reduction， but restricts the oxidation of the Cu/Mn composite oxygen carriers. In the reduction stage， lower oxygen concentration leads to higher reduction rate. However， in the oxidation stage， oxidation rate increases with the increasing of oxygen concentration. For the composite oxygen carriers with different particle diameters， big particle diameter favors both the reduction and oxidation rates.