四氢呋喃中的微量水在4A分子筛上吸附动态曲线的模拟计算  

Simulation of the breakthrough curves of small amount of water from tetrahydrofuran on 4A molecular sieve by adsorption

作　　者：居沈贵[1] 刘健[1] 敖枝平 

机构地区：[1]南京工业大学化学化工学院,江苏南京210009 [2]江苏春江农化有限公司,江苏金坛213200

出　　处：《南京工业大学学报（自然科学版）》2007年第5期8-11,共4页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：江苏省重点实验室开放课题基金资助项目(KJS03017)

摘　　要：建立了合适的吸附动态模型,用于分析四氢呋喃中的微量水在4A分子筛上动态吸附特性.利用静态平衡实验数据及孔扩散系数能够很好地对动态透过曲线进行模拟计算,平衡数据符合Langmuir模型,采用Wilke-Chang方程计算的孔扩散系数值为7.015×10-5cm2/s,该方法不仅可减少实验的工作量,而且对四氢呋喃-水体系吸附过程的工业放大设计具有指导意义,也为其他吸附过程数学模型的开发提供借鉴.The dynamic adsorption model that described the characteristics of small amount of water from tetrahydrofuran on 4A molecular sieve was developed. The model can well simulate the experimental breakthrough curves with equilibrium data and pore diffusion. The equilibrium data are fitted with Langmuir Model, and pore diffusion coefficient calculated with Wilke-Chang equation is 7. 015 × 10^ -5 cm^2/s. The results show that the model can save much experimental work for the design of the adsorption separation process for the system of tetrahydrofuran-water.

关 键 词：四氢呋喃 脱水 4A分子筛 吸附动态模型 

分 类 号：TQ028.17[化学工程]