玻纤滤纸性能和结构对航煤水聚结分离性能影响研究

Study on Effects of Performances and Structures of Glass Fiber Filter Paper on Water Coalescence and Separation in Aviation Kerosene

本研究通过造纸湿法成形技术制备玻纤滤纸,并采用浸渍增强树脂的方式调控其表面润湿性能,以应用于航空煤油(航煤)中污染水的聚结分离。通过分析玻纤滤纸的表面润湿特性、厚度及孔径等结构参数,探究了其对航煤/水分离性能的影响,并对比了玻纤滤纸与玻纤毡材料复合前后的油水分离性能。结果表明,当增强树脂涂膜水接触角为44°,厚度为0.53 mm,孔径在3.0μm左右时,单层结构玻纤滤纸具有优良的水聚结分离性能;而孔径分别为3.0和5.0μm左右的双层结构有利于进一步提升玻纤滤纸的油水分离性能。此外,本研究制备的玻纤滤纸与玻纤毡材料复合的方式能够有效提高航煤中水的聚结分离性能,过滤航煤后下游游离水含量可低至41.0 mg/L。

In this study,glass fiber filter papers were prepared through wet forming method and the surface wettability was modulated by im⁃pregnation of reinforcing resin,which were applied to the agglomeration separation of contaminated water from aviation kerosene.The effects on the separation performance of contaminated water in aviation kerosene,by analysing the surface wetting property and structural character⁃istics such as thickness and pore size of glass fiber filter paper were investigated,and the oil-water separation performance of glass fiber filter paper before and after the composite with glass fiber mat was compared.The results showed that single-layer glass fiber filter paper with rein⁃forced resin film water contact angle of 44°,thickness of 0.53 mm,and pore size of about 3.0μm,had superior water coalescence and sepa⁃ration performance.Additionally,double-layered structure glass fiber filter paper with pore size of about 3.0μm and 5.0μm,respectively,could further enhance its water separation performance.Furthermore,the combination of developed glass fiber filter paper with glass fiber mat could effectively improve the water coalescence and separation performance.The downstream free water content after filtering jet cool could be as low as 41.0 mg/L.