文献类型：期刊文献

中文题名：超临界CO_2脱除大孔树脂中的溶剂及数值模拟

英文题名：Removing solvent from macro porous resin with supercritical CO_2 and its numerical simulation

作者：郭志锋[1];武丽梅[1];杨薇[1];江邦和[2];蔡建国[1]

机构：[1]华东理工大学化学工程研究所产品工程系,上海200237;[2]华东理工大学华震科技有限公司,上海200237

年份：2012

卷号：40

期号：3

起止页码：12

中文期刊名：化学工程

外文期刊名：Chemical Engineering(China)

收录：CSTPCD;;Scopus;北大核心:【北大核心2011】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：超临界CO2;大孔树脂;脱溶剂;模拟

外文关键词：supercritical CO2 macro porous resin removing solvent simulation

摘要：用超临界CO2洗脱大孔树脂中的残余溶剂,采用单因素法研究了温度、压力、时间及树脂中水的质量分数对大孔树脂中残余溶剂脱除率的影响,并对该过程进行了模拟;同时对脱溶剂过程对树脂结构影响进行了考察。结果表明:温度40℃,压力12 MPa,时间2 h,树脂含水质量分数30%—40%为最优脱溶剂条件,在该条件下树脂中残溶溶剂脱除较完全且树脂原有结构变化不明显。在压力低于25 MPa,温度低于80℃的条件下对树脂进行溶胀,10 h内对树脂结构影响很小。模拟结果与实验数值较吻和,表明文中所建立模型能很好地描述该类树脂的脱溶剂过程,根据模型算出该溶剂在树脂中扩散系数为(6.2—8.8)×10-8cm2/s。
Removing solvent from macro pore resin was studied by using supercritical CO2.The influencing factors such as temperature,pressure,water mass fraction,removing time on the removing rate of residual solvent were inspected with single factor method,and the process was simulated.The study also includes the influence of removing process on resin structure and the swelling of resin.The results show that the ideal solvent removal condition is at 40 ℃ and 12 MPa,for 2 h,and with water mass fraction of 30%-40%.Under these conditions,the solvent in the resin can be removed completely and the resin structure can be kept as original.When the pressure is less than 25 MPa and the temperature is below 80 ℃ in 10 h,the swelling process has a little effect on resin structure.The simulation values are in line with experiment datas which shows that the model used in this study can reflect the removing process well,and the diffusion coefficients are among（6.2-8.8）×10^-8 cm^2/s according to the simulation results.