A buoyancy-adaptive oil-water separation device is developed based on the prepared oil-water separation materials with a micro-nano hierarchical structure. This device can achieve the efficient recovery of diesel oil pads in the process of salt cavern construction without an external power source. The surface structure of superhydrophobic materials and the wettability of droplets on their surfaces are characterized. Then the separation mechanism is theoretically analysed. In addition, the brine breakthrough pressure and the separation efficiency of the device are studied considering the different surface structures of the separation materials. The mesh number and the layer number of separation materials are explored to determine their effects on the breakthrough pressure. It is found that this pressure increases with an increasing mesh number, but the influence of the screen layers is weak. Furthermore, the mesh number and the number of cycle separations that affect the separati...

中文翻译：

---

基于超疏水材料的多尺度表面结构油水分离装置

基于所制备的具有微纳米分级结构的油水分离材料，开发了一种具有浮力的油水分离装置。该设备无需外部电源即可在盐穴建造过程中实现柴油垫的有效回收。表征了超疏水材料的表面结构和液滴在其表面上的润湿性。然后对分离机理进行了理论分析。另外，考虑了分离材料的不同表面结构，研究了盐水的突破压力和装置的分离效率。探索分离材料的目数和层数，以确定它们对穿透压力的影响。发现该压力随着网眼数的增加而增加，但是屏幕层的影响很小。此外，网孔数和影响分离的周期间隔数...