Li_2O-CaO吸附剂吸附CO_2的性能

Performance of Li_2O-CaO absorbent for CO_2 adsorption

采用机械混合法制备了Li2O-CaO吸附剂,在固定床管式反应器中研究了Li2O-CaO吸附剂的吸附性能,考察了吸附温度、空速及吸附剂粒径对静吸附容量的影响,确定了适宜的工艺条件,采用XRD和SEM对改进的钙基吸附剂进行了表征。结果表明,Li2O-CaO吸附剂对CO2有较好的吸附能力,在吸附温度600℃、空速8min-1、吸附剂粒径60～80目(0.18～0.28 mm)的条件下,静吸附容量达到了17.3891 mol/kg。

The Li2O-CaO absorbent was prepared by mechanical blending method.The performance of Li2O-CaO absorbent was tested in a fixed bed tubular reactor,and the influences of adsorption temperature,space velocity,and adsorbent particle size on the static adsorption capacity were investigated.The suitable reaction condition was determined,and the modified calcium-based adsorbent were characterized by techniques such as XRD and SEM.Results indicated that the Li2O-CaO absorbent has good adsorption ability for the CO2,and the static adsorption capacity amount to 17.3891mol/kg under the condition of adsorption temperature 600oC,space velocity 8min-1and adsorbent particle size 60—80 bean size（0.18—0.28 mm）.