响应面法优化Li_2O-CaO吸附剂吸附CO_2的工艺条件  

Process condition optimization via response surface method for CO_2 adsorption on Li_2O-CaO absorbent

作　　者：刘思乐[1] 郭瓦力[1] 田旭[1] 冯健[1] 王龙[1] 

机构地区：[1]沈阳化工大学,辽宁沈阳110142

出　　处：《天然气化工—C1化学与化工》2012年第1期9-12,共4页Natural Gas Chemical Industry

基　　金：辽宁省教育厅创新团队项目(No.2008T159)

摘　　要：采用机械混合法制备了Li2O-CaO吸附剂,并利用响应面法中的Box-Behnken设计对影响Li2O-CaO吸附剂静吸附容量的3个主要因素(吸附温度、空速、吸附剂粒径)进行优化,建立静吸附容量的二次多项回归模型方程,并对回归模型进行可信度及方差分析。实验结果表明,当吸附温度为611℃,空速为6.7min-1,吸附剂粒径为60目～80目时Li2O-CaO吸附剂的静吸附容量最大,最大静吸附容量的预测值为17.744mol/kg,与实测平均值17.526mol/kg基本相同。优化模型有效可靠。A Li2O-CaO absorbent was prepared by mechanical blending method,and three main process parameters influencing the static adsorption capacity of the absorbent——adsorption temperature,space velocity and adsorbent particle size were optimized with Box-Behnken mode of response surface method.A quadratic regression model for the static adsorption capacity was established,and the credibility and variance analysis for the regression equation was also performed.The results showed that the optimum conditions for static adsorption capacity of the absorbent were as follows： adsorption temperature of 611℃,space velocity of 6.7 min-1 and adsorbent particle size of 60-80 mess.The predicted optimum static adsorption capacity is 17.744 mol.kg-1,which is in consistent with average measured value of 17.526 mol.kg-1.Therefore,the regression equation is valid and reliable.

关 键 词：响应面法 Li2O-CaO吸附剂 二氧化碳 优化 

分 类 号：TQ018[化学工程]