碳分子筛空气吸附过程的数值模拟  

Numerical simulation of air adsorption process with carbon molecular sieve

作　　者：张力[1] 唐红[1] 王煤[1] 

机构地区：[1]四川大学化学工程学院,四川成都610065

出　　处：《能源化工》2015年第4期69-72,共4页Energy Chemical Industry

摘　　要：采用Aspen adsorption对空气在碳分子筛上的吸附过程进行了数值模拟,得到了氧气的穿透曲线和氮气出口浓度随时间的变化,考察了吸附压力、原料气流速和原料气中氩气浓度对穿透曲线的影响。研究表明:氧气和氮气出口浓度的模拟值与试验值吻合良好,当压力从0.58 MPa增大到0.98 MPa时,氧气的穿透时间延长了55.6%;穿透时间随原料气流速增大迅速缩短,但变化幅度在流速大于0.004 mol/s后趋于平缓;当原料气中氧气浓度不变时,氩气浓度对氧气的穿透曲线影响甚微。The adsorption process, supported by Aspen adsorption software, is simulated for air on carbon molecular sieve. The effects of operating pressure, gas velocity and the concentration of argon in air on the breakthrough curves are studied. The results show that the simulation values of the outlet concentration of nitrogen and oxygen are basically consistent with the results of experiment. When the operating pressure increases from 0. 58 MPa to 0. 98 MPa, the breakthrough time of oxygen enhances 55.6%. The breakthrough time decreases sharply with the increase of gas velocity, while the variation tends to steady when gas velocity is greater than 0. 004 mol/ s. Keeping the concentration of oxygen in air unchanged, the argon concentration has almost no effect on the breakthrough of oxygen.

关 键 词：吸附 碳分子筛 ASPEN adsorption软件 穿透曲线 

分 类 号：TQ424.25[化学工程]