摘要
制备了用于正庚烷/氮气分离的PDMS/PVDF复合膜。分析讨论了原料气压力、流速、原料气中正庚烷浓度、透过侧压力及操作温度等因素对气体分离性能的影响。在一定的操作条件下,当原料气中正庚烷质量分数为6%时,正庚烷的渗透速率为2.5E-06 mol/(m2.s.Pa),分离因子可达600左右。
The PDMS/PVDF composite hollow fiber membrane was prepared and the effects of feed pressure, concentration, flow rate, permeate pressure and temperature on the performances of the composite membrane for the separation of n-heptane/nitrogen were studied. For this composite membrane, the permeation rate of n-heptane was 2.5E-06 mol/（m^2· s· Pa） and the separation factor was about 600 when the operating conditions were given.
出处
《天然气化工—C1化学与化工》
CSCD
北大核心
2005年第5期22-26,共5页
Natural Gas Chemical Industry
关键词
气体膜分离
中空纤维复合膜
有机蒸汽
membrane
gas separation
composite hollow fiber membrane
volatile organic compounds
