【作者】 梅华； 陈道远； 姚虎卿； 沈健；

【Author】 MEI Hua;CHEN Dao-yuan;YAO Hu-qing;Shen Jian;Department of Chemical Engineering,Nanjing University of Technology;Research Center of Surface and Interface Chemical and Engineering Technology,Nanjing University;

【机构】 南京工业大学化学化工学院； 南京大学表面与界面化学工程技术研究中心；

【摘要】 实验测定了CO₂、N₂在两种硅胶上的吸附平衡数据,用柱动态法研究了硅胶吸附剂在CO₂/N₂和CO₂/H₂体系中对CO₂的动态吸附性能,比较了两种硅胶吸附剂吸附穿透曲线和吸附性能的差异,并研究硅胶的微结构特性对吸附二氧化碳性能的影响。结果表明:比表面大、孔径分布趋向细孔有利于硅胶对二氧化碳的吸附,而适当的孔分布则有利于硅胶吸附剂减小扩散阻力。研究结果为硅胶吸附剂的改进以及变压吸附在合成气脱碳过程中的应用提供了依据。更多还原

【Abstract】 The adsorption equilibrium data of N₂ and CO₂ on two kinds of silicon gel were measured.The dynamic adsorption characteristics of CO₂ in gas mixtures,CO₂/N₂ and CO₂/H₂,were also studied.A comparison of breakthrough curves and adsorbed amount of CO₂ on two adsorbents was made,and the effect of the microstructure on the adsorption of CO₂ was researched and found that the large surface area and the micropore inside silicon gel were favorable to the adsorption of CO₂.The appropriate distribution of bore diameter was beneficial to reduce the diffusion resistance of silicon gel.The resultsof this paperoffered a method forimproving the silicon gel adsorbents and applying them in pressure swing adsorptive（PSA） process of removing CO2 from synthesis gas.更多还原