稠油污水处理现场小试

为解决稠油污水问题 ,利用辽河油区欢四联的稠油污水进行了现场处理试验。试验结果表明 :稠油污水经过斜板隔油池和溶气气浮池预处理后 ,出水油含量和悬浮物均可达到回注和进热采锅炉的要求 ;再经生物处理后 ,COD可达到国家排放标准。

多EFP拦截整体设计及多角度下交汇概率计算

利用多爆炸成型弹丸(EFP)的特点,设计了圆周分布200个EFP的装药盘形成拦截弹幕,该结构既能满足俯仰拦截,还能够圆周运动以满足对不同方向来袭目标的拦截;在给定的随动误差下,通过来袭目标与拦截区域的投影面积,编写拦截弹幕与目标随机交汇程序,汇总计算交汇概率;结果表明:随动误差控制在0.2°以下以及在来袭目标与拦截弹幕之间夹角α在0°~50°拦截最佳,交汇概率均在70%以上,且至少有3发EFP弹丸击中目标。

渤海某油田斜板除油器处理效果影响因素分析

渤海某油田污水系统投用后,斜板除油器除油效率一直偏低,在实际处理量未达到设计处理量的情况下除油率仅为40%。进入斜板除油器的含油污水先通过聚结波纹板,其中较大油滴被上浮除去,较小油滴通过聚结成为较大油滴,然后通过斜管区除去。上浮至斜管区表面的乳化油漫过收油槽堰板通过收油管线进入污油罐,经斜板除油器除油后的污水进入气浮机。油田利用斜板除油器清罐的契机,对内部结构进行测量和分析后,提出改造意见。

斜板撇油器清水室收油装置设计与制作

斜板撇油器是海上油气平台污水处理系统的第一级处理设备,具有除油效率高,运行稳定等特点。多个品牌的斜板撇油器均未设计清水室收油装置,长期使用后影响注水水质。设计和制作的清水室收油装置应用于斜板撇油器清水室,设计简单、成本较低、安装时无需大型罐内改造,不影响设备压力监控。经现场应用验证,能够将斜板水相出口含油量下降,提高出口水质,降低后续污水处理系统设备的负担和操作人员的收油劳动强度。

Hydrodynamics of the interceptor on a 2-D flat plate by CFD and experiments

Nowadays, the use of interceptor by both partial and total dynamic lift crafts is quite common. In this article, a lot of evidence is given regarding the effectiveness of interceptor. The interceptor, when placed at the stern region, changes the pressure distribution around the craft. Its presence affects drag force, lifting force and the position of pressure＇s center leading to a new trim. This study focuses on hydrodynamic effects of interceptors on a 2-D fiat plate based on both computational fluid dynamic （CFD） and experimental approaches. The Reynolds average Navier-Stokes （RANS） equations are used to model the flow around a fixed flat plate with an interceptor at different heights and attack angles. Based on finite volume method and SIMPLE algorithm which uses static structures, this model can be analyzed and the RANS results can be compared with the experimental data obtained in the current channel of the laboratory of waves and current of COPPE/UFRJ （LOC in Portuguese acronym）. According to the results, the increase of pressure at the end of the flat plate was proportional to the interceptor height. In addition, the existence of interceptors can significantly increase the lift force coefficient at high angles of attack also proportional to the interceptor height. The presence of interceptor at the end of the fiat plate increased both the lift coefficient and the drag coefficient but hydrodynamic drag did not grow as fast as the lift coefficient did. The lift coefficient increased much more. Furthermore, the results showed that the interceptor effectiveness is proportional to the boundary layer thickness at the end of the fiat plate. As the interceptor was inside the boundary layer alterations of flow speed led to changes in boundary layer thickness, directly affecting interceptor＇s efficiency. Optimum choice of interceptor height had a great effect on its efficiency, and in choosing it the flow speed and length of the boat must be taken into consideration.

斜板除油器除油效率下降原因分析及收油装置改造实践

斜板除油器作为污水处理系统的第一道关卡,是降低生产污水含油量的重要设备。某海上平台生产污水处理系统的斜板除油器投入使用一年后除油效率逐渐降低,在分析研究找出原因后,通过改造斜板区收油槽和增加清水区收油装置,成功解决了斜板除油器除油效率低下的问题,提升了油田回注水水质。

合成气制油装置含油污水除油处理工程设计

结合工程实例,对合成气制油(费托)装置含油污水的来源特点及除油工艺进行分析。该含油污水经调节隔油池、斜板隔油设备和溶气气浮设备处理,出水经检测达标后排至原厂区污水处理厂进行生化及深度处理,不合格的水则排回调节隔油池循环处理。

多附体对高速排水型船阻力及航态的影响试验研究

本文通过试验方法研究多种附体对不同载况下高速排水型船阻力及航态的影响。开展了正常排水量和满载排水量两种载况模型试验,讨论了长防溅条、长防溅条分别和压浪板、阻流板的组合附体对船体阻力和航态的影响,分析了不同附体的适用航速和载况。长防溅条与压浪板或阻流板的组合不仅能够很好地弥补长防溅条单独使用所带来的纵倾角增大问题,而且在两种载况下均具有良好的减阻效果,减阻率最大可以达到20%以上。