采油污水的室内再现配置及静态混合器剪切强度研究

为了便于采油污水处理技术的开发和研究,以静态混合器为主体,设计、加工了一套采油污水室内再现配置装置,配置效果稳定,探讨了含油量、剪切速率等不同配置条件下的再现采油污水粒度分布、乳化度等性能参数以及配置过程中的压力损失,并总结出再现采油污水乳化度(%)与主要配置条件的对应关系表。研究结果表明,静态混合器的压力损失随着剪切速率的增大而明显升高,而随含油量增大呈现出基本稳定的状态;随着剪切速率不断增大,再现采油污水的整体油珠粒径变小,乳化度增大;对于低剪切速率,含油量和剪切作用在促进油珠粒径变化趋势的竞争中前者占优势,所以含油量越大,整体油珠粒径越大;对于高剪切速率,含油量和剪切作用在促进油珠粒径变化趋势的竞争中后者占优势,使得油珠平均粒径随含油量增大而略微降低,同时油珠粒径范围随含油量增大而变窄;随着含油量的增大,各种剪切速率条件下的乳化度均呈现明显的下降趋势。

STUDY ON PRODUCED WASTEWATER'S INDOOR REAPPEARANCE AND STATIC MIXER'S EMULSIFICATION INTENSITY

For produced wastewater treatment,a set of reappearance equipments based on static mixer were designed and manufactured,with stable performance.Granulometric distribution,emusification percents and viscidity of reappeared produced wastewater and the pressure drop among the configuring process were explored under the different conditions such as oil percents and shearing velocity,and the corresponding connections were gained between emusification percents and main configuring conditions.The experimental results indicated that with the shearing velocity gaining,pressure drop of static mixer goes up evidenth,and with oil percents gaining,the pressure drops to a basic balance;with the shearing velocity gaining,whole droplets sizes of reappeared produced wastewater become smaller and emusification percents go up;for low shear velocity,oil percents play an more important role than shearing velocity in promoting oil droplet sizes to change,so with oil percents up,whole droplets sizes go up too;for high shear velocity,shearing velocity play an more important role than oil percents in promoting oil droplet sizes to change,with the mutual results that average droplets sizes go appreciably down and the scope of droplets sizes become narrow as oil percents go up;emusification percents under different shearing velocity all present a evident drop trend as oil percents go up.