热含蜡原油管内停输温降计算  

Temperature drop calculation in hot waxy crude pipeline during shutdown

作　　者：刘刚[1] 张国忠[1] 张园园[2] 

机构地区：[1]中国石油大学储运与建筑工程学院,山东青岛266555 [2]中石化石油勘探开发研究院,北京100083

出　　处：《中国石油大学学报（自然科学版）》2010年第5期136-140,146,共6页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家自然科学基金项目(50904077);中央高校基本科研业务费专项资金项目(09CX04015A);中国石油科技创新基金项目(2010D-5006-0606)

摘　　要：利用Fluent计算流体动力学软件模拟热油管道内停输温降过程。计算过程不须跟踪固液相界面,同时将析蜡潜热转化为附加原油比热容,反映出降温过程中自然对流的变化和固液相界面的移动,并进行试验验证,试验数据与模拟计算结果非常吻合,而且求解更加简洁;在此基础上,研究初始油温、管径等因素对水下管道内停输降温过程的影响。结果表明:在其他条件相同时,增大管径和提高初始油温均可延长降温时间,且增大管径比提高初始油温更有效。The temperature drop in hot oil pipelilne during shutdown was simulated using CFD software of Fluent. The simulation need not follow the moving of solid-liquid phase interface during the wax precipitation process and can invert the latent heat to additional heat absorption capacity. The comparison between the experimental and the simulated results shows that the influences of natural convection and the moving of phase interface during the temperature drop process can be displayed, which makes the solving of this kind of problem more easy. Based on this method,the influence of the initial oil temperature and the pipeline diameter on the temperature drop process of the underwater pipeline was studied. The results show that,both increasing the pipe diameter and raising initial oil temperature can prolong shutdown duration. Moreover,increasing the pipe diameter is more effective to prolong shutdown duration while other conditions are the same.

关 键 词：热油管道 含蜡原油 停输 温降 数值模拟 计算 

分 类 号：TE866[石油与天然气工程—油气储运工程]