高校化学工程学报Issue(5)：910-914,5.DOI:10.3969/j.issn.1003-9015.2013.05.029
油水乳化液在疏水复合涂层网膜上破乳分离的实验研究
Experimental Research of the Demulsification of Oil-in-Water Emulsions by a Composite Coating Membrane
摘要
Abstract
Oil-water separation is of great significance for oil mining and refining, and for the treatment of oily wastewater. A new type of microporous membrane used for oil-water emulsion separation was prepared by a spray-plasticizing method. The composite PPS-PTFE coating layer was first deposited on the 400 mesh stainless steel screen and a micron thin fiber structure was then fabricated on top of the composite layer. The prepared membrane has a maximum pore diameter of less than 10μm and demonstrates excellent hydrophobic and oleophilic properties, which may be used for oil-water emulsion separation. The result of the experiment shows that this membrane is great for the oil-water separation. When the thickness of the membrane is about 0.4 mm and the pressure difference is below 70 kPa, the content of oil in water after separation is less than 10 mgL1. Effects of the operating pressure difference, the membrane thickness and emulsion composition on the membrane permeation flux and separation factors were investigated. It was found that, increasing operating pressure difference and reducing membrane thickness have negative effect on the separation of oil-water emulsions, while the primary oil concentration of the emulsion has less significant effect.关键词
油水分离/乳化液/膜通量/疏水膜Key words
oil-water separation/emulsion/membrane flux/hydrophobic film分类
化学化工引用本文复制引用
孙晓哲,于志家,徐鹏,董志健,赵小航..油水乳化液在疏水复合涂层网膜上破乳分离的实验研究[J].高校化学工程学报,2013,(5):910-914,5.基金项目
辽宁省科学技术基金(20072190)；大连理工大学大学生创新实验项目(国家级)。 （20072190）
