高校化学工程学报2011，Vol.25Issue(1)：37-42,6.
膜结构填料的物化特性对精馏分离异丙醇/水体系的影响
Effect of Physical Chemical Characteristics of Membrane Structured Packings with Different Materials on iso-Propanol/Water Distillation
摘要
Abstract
Polypropylene (PP), polysulfone (PS) and polyethersulfone (PES) hollow fiber membranes were used as novel structured packings, respectively, in eontactors for iso-propanol/water distillation. In the contaetor,the liquid flows through the lumens of fibers, and the vapor flows counter currently outside the fibers. Results indicate that all the contactors with above three kinds of membranes separately have higher separation efficiency than the distillation column with traditional packings. The HTU values of above hollow fibers could attain to the range of 8～10 cm. The sequence of separation efficiency for above three membrane contaetors is PES＞PP＞PS and their overall mass transfer coefficients are 0.0026, 0.0020 and 0.0019 cm.s-1, respectively. All contactors with above hollow fiber membranes can operate normally under the gas velocity above the flooding limit of conventional packing column, which presents great advantage in hydraulics performance and separation efficiency. Further analyses with Hansen solubility parameters and micro-structure show that PES and PP structured packing have better operation stability than PS.关键词
PP/PS/PES中空纤维膜接触器/结构填料/异丙醇/水/精馏Key words
PP/PS/PES hollow fiber membrane contaetor/ structured packing/ iso-propanol/water/distillation分类
化学化工引用本文复制引用
杨志宏,张燕,吴景,陈建孟,张国亮,朱利平..膜结构填料的物化特性对精馏分离异丙醇/水体系的影响[J].高校化学工程学报,2011,25(1):37-42,6.基金项目
国家自然科学基金(20776133,20976163) （20776133,20976163）
浙江省重大科技计划(2008C13014-2)资助项目. （2008C13014-2）
