摘要
以聚乙二醇(PEG)为活性分离层、聚偏氟乙烯(PVDF)多孔膜为支撑层制备复合膜。PEG涂膜液的固含量提高到16%时,可以减少孔渗现象,提高渗透通量。考察进料温度、流量和膜下游侧压力对复合膜性能的影响。硫富集因子随温度和流量升高先增加后减小,最大值出现在100℃和100mL/min。渗透通量随温度升高而增大;当进料流量大于100mL/min时,渗透通量随流量增加而减小。两个参数均随膜下游侧压力增加而减小。对典型的催化裂化汽油,膜的渗透通量可达2.7kg/(m2.h),硫富集因子为3.6。
A composite membrane was prepared through pre-wetting method using poly（ethylene glycol） （PEG） as active layer and poly（vinylidene fluoride） （PVDF） as microporous support layer. When the solid content in active layer solution was up to 16%,the pore penetration occurred at a low level and the permeation flux increased. Effects of feed temperature,feed flow rate and permeate pressure on pervaporation performance were investigated. The sulphur enrichment factor increased firstly and then decreased with increasing feed temperature and flow rate,and met its peak value at 100 ℃ and 100 mL/min. The permeation flux increased with increasing temperature,and decreased with increasing flow rate greater than 100 mL/min. Both the sulphur enrichment factor and flux decreased with increasing permeate pressure. For typical fluid catalytic cracking gasoline feed,the permeation flux and sulphur enrichment factor came to 2.7 kg/（m^2·h） and 3.6,respectively.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2010年第5期127-129,共3页
Polymer Materials Science & Engineering
基金
中石化科技攻关课题(107022)
教育部新世纪优秀人才支持计划(NCET-06-0605)
中国博士后科学基金(20070420119
200801218)
教育部创新团队"重质油高效转化的绿色化学与工程"资助
关键词
渗透汽化
汽油脱硫
聚乙二醇
复合膜
pervaporation
gasoline desulfurization
polyethylene glycol
composite membrane
