风化过程对溢油回收效率的影响

Influence of Weathering Process on Recovery Efficiency of Spilled Oil

选择3种渤海重质原油在波浪槽中开展48 h溢油风化及回收实验,通过分析油品的密度、黏度、含水量及回收效率在溢油风化过程中的变化趋势,探讨海上原油泄漏后的最佳处置时间窗口。风化实验结果表明,溢油的物理性质在风化过程中均有明显的变化,其中黏度和含水量的变化尤为明显。真空式溢油回收实验显示,溢油后6 h内回收效率会急剧下降,3种原油的最终实际回收效率分别降低至12.2%、3.5%和4.8%。

Three kinds of heavy crude oil from Bohai sea were selected to carry out a series of 48 hours oil spill weathering and recovery experiments in the wave tank.By analyzing the change trend of oil density,dynamic viscosity,water content and recovery efficiency in the process of oil spill weathering,the best oil spill disposal time window was discussed.The results of weathering experiments showed that the physical properties of the crude oils have obvious changes in the process of weathering,especially for the dynamic viscosity and water content.The vacuum oil spill recovery experiment showed that the recovery efficiency will drop sharply within 6 hours after oil spill,and the final actual recovery efficiency of three kinds of crude oil will be reduced to 12.2%,3.5%and 4.8%respectively.