成品油管道内杂质运移沉积及其影响规律  

Movement, deposition and influence laws of impurities in the product oil pipelines

作　　者：刘刚[1] 汤苑楠 李博[1] 赵家良[1] 陈雷[1] 

机构地区：[1]中国石油大学(华东)/山东省油气储运安全省级重点实验室/青岛市环海油气储运技术重点实验室

出　　处：《油气储运》2017年第6期708-715,共8页Oil & Gas Storage and Transportation

基　　金：中国石油科技创新基金资助项目"杂质沉积对成品油管线运行可靠性影响机制研究";2014D-5006-0604;中国石油化工股份有限公司科研项目"油库加油加气站设备及安全设施实验平台研发";314013

摘　　要：为确定可行的水力清管方案,对成品油管道内杂质沉积运移规律、影响因素及杂质沉积对管道的影响等方面内容开展了研究。设计建造了室内成品油携水携杂质试验环道,可以开展不同倾角、口径成品油管道内杂质运移沉积规律测试、内腐蚀特性测试;利用Fluent-DEM耦合的数值方法,开展了不同工况下固体颗粒在成品油管道内的运移特性研究。试验测试结果与数值模拟数据的吻合度较高,说明数值模拟方法具有较高的可靠性。基于试验与数值模拟手段,研究了杂质沉积特性、临界运移流速、沉积特性的影响因素以及杂质沉积对管道内腐蚀的影响。研究发现:固体颗粒通常沉积在上倾-水平管道弯头的后方,并获得了流速、管道倾角、口径、固体颗粒的密度和球度等参数对固体颗粒运移特性的影响规律,得到了杂质沉积对成品油下方积水的运移及管道内腐蚀特性的作用机理。In order to make a feasible scheme for hydraulic pigging, the deposition and movement laws and influence factors of impurities in product oil pipelines and the effect of impurity deposition on pipelines were studied. The test loop of product oil carrying water and impurity was designed and established to test the deposition and movement laws of impurities and the internal corrosion characteristics in the product oil pipelines with different inclination angles and diameters. Then, the numerical method of Fluent-DEM coupling was used to investigate the movement characteristics of solid particles in the product oil pipeline under different working conditions. The numerical simulation results are in good agreement with the test data. It is indicated that the numerical simulation method is of high reliability. Finally, the deposition characteristics of impurities, the critical movement velocity, the influence factors of deposition characteristics and the effects of impurity deposition on the internal pipeline corrosion were investigated by means of tests and numerical simulation. It is shown that the solid particles are usually deposited behind the elbow of the upward inclined-horizontal pipe. The influence laws of flow velocity, inclination angle and diameter of pipes, and density and sphericity of solid particles on the movement characteristics of solid particles are figured out, and the action mechanism of impurity deposition on the movement of water accumulated below the product oil and the internal corrosion characteristics in the pipeline are clarified.

关 键 词：成品油管道 杂质 沉积特性 运移规律 

分 类 号：TE832[石油与天然气工程—油气储运工程]