金属氧化物掺杂对钙基吸附剂吸附CO_2性能的影响

化石燃料火电厂排放的CO2约占全球CO2总排放量的1/3,采用化学吸附法直接脱除高温烟气中的CO2既可以减少系统的能量损失又可以保护环境。文中采用机械混合法制备金属氧化物掺杂的钙基吸附剂,并以静吸附量和CO2吸附率为评价指标,气相色谱为检测手段,在自制吸附剂评价装置上,研究不同金属氧化物的掺杂对钙基吸附剂吸附性性能的影响。实验表明,掺杂金属氧化物对钙基吸附剂的吸附性能有一定影响,其中质量分数为1%的Li2CO3掺杂的钙基吸附剂的静吸附容量与钙基吸附剂的理论吸附量比较接近,并且优于其他金属氧化物掺杂的钙基吸附剂。

Effect of metal-oxide doping on CO2 adsorption performance of calcium-based absorbent

The emission of CO2 from the power plant with fossil fuel accounts for about 1/3 of total emissions in the world.Removing CO2 in high temperature flue gas by chemical adsorption can not only reduces the loss of system energy,but also protect the environment.Metal-oxide doping calcium-based adsorbents were prepared by mechanical blending method,and static adsorption capacity and CO2 adsorption rate and gas chromatography were used as evaluation indexes and test means,respectively.In the homemade adsorbent evaluation device,the effects of different metal-oxide doping on calcium-based adsorbents on the adsorption performance were researched.The experiment shows that adding metal-oxide can affect the adsorption performance of calcium-based adsorbents,the static adsorption capacity of mass fraction 1% Li2CO3 doping on calcium-based adsorbents is close to the theoretical value of adsorption capacity of calcium-based adsorbents,and is better than those of other metal-oxide doping on calcium-based adsorbents.