汽油溢油风化过程影响因素及规律研究

Simulation study of the influence factor and regularity of weathering process of gasoline spill

为了研究溢油风化过程中溢油的风化规律,实现对于溢油性质及变化规律的准确预测,进而指导溢油事故的应急反应和经济损害评估,选取最有效的控制清除方式,采用振荡浅盘蒸发实验方法考察了不同温度、风速、油膜厚度等条件下汽油蒸发百分数、密度、黏度随时间的变化规律。研究结果表明:油品蒸发百分数与t1/2成线性关系,蒸发曲线较平缓;温度、风速、油膜厚度对油品蒸发前期有较大影响,振荡程度影响相对较小;低风速条件下汽油的蒸发受风速影响较大,风速增加后影响减弱,说明汽油蒸发过程在一定程度上受传递边界层条件的影响。

To study the weathering law of oil spills during the process of oil spill weathering,to accurately predict the nature and changes of oil spills,and then to guide the emergency response and economic damage assessment of oil spill accidents,and select the most effective control and removal methods,using oscillation shallow disk evaporation experiment method investigated the change law of gasoline evaporation percentage,density,and viscosity with time under different conditions such as temperature,wind speed,and oil film thickness.The results showed that the evaporation percentage has a linear relationship with t1/2,and the evaporation curve was relatively smoother.Temperature,wind speed,and oil film thickness have a great influence on the early stage of oil evaporation,while the oscillation degree has relatively small influence.For the wind speed,the evaporation of gasoline at low wind speed was greatly affected by the wind speed,and the effect decreases with the increase of wind speed,which indicates that the evaporation process of gasoline was affected to a certain extent by the transfer boundary layer conditions.