冷热原油交替输送管道停输策略及再启动安全性分析  

Shutdown Strategy and Restart Safety Analysis of Alternate Cold and Hot Crude Oil Pipeline

作　　者：许继凯 黄鑫 姚志成 孙广宇[2] Xu Jikai;Huang Xin;Yao Zhicheng;Sun Guangyu(PipeChina Co.Ltd.,Jinan 250002,China;China University of Petroleum(East China),Qingdao 266580,China)

机构地区：[1]国家石油天然气管网集团有限公司山东省分公司,山东济南250002 [2]中国石油大学(华东),山东青岛266580

出　　处：《广东化工》2024年第17期27-30,26,共5页Guangdong Chemical Industry

基　　金：中国石油大学(华东)自主创新科研计划项目战略专项(22CX01001A-5)。

摘　　要：管道停输安全性与沿线油温、土壤温度场等紧密相关,为了保证安全性的同时兼顾经济性,在运行温度不低于油品最低安全温度条件下,采用冷油停输无疑能保证更好的经济性,因此确定短时停输与长时停输的管道内油品温降,对制定再启动方案以及停输检修计划具有重要指导意义。为此,以东临复线历史运行数据为基础,通过仿真软件建立了冷热原油交替输送管线模型,并将模拟结果与实际工况进行对比,验证了模型的仿真效果。之后以东临复线冷热油交替输送的安全停输为研究目标,分别对比了冷热油长短时停输的安全性以及再启动采用冷油和热油的安全性和流量恢复情况。结果表明,采用冷油与热油停输的安全性受环境温度影响较大,春秋夏季两者均满足进站油温要求,冬季则最好采用冷油进行停输。再启动采用冷油会引起混油段温度较低,流量恢复过程较慢,并需要大量进口原油进行再启动,对沿线土壤温度场影响较大。The safety of pipeline shutdown is closely related to the oil flow temperature and soil temperature field along the pipeline.In order to ensure safety while considering economy,using cold oil shutdown can undoubtedly ensure better economy under the condition of ensuring that the temperature is not lower than the minimum safe temperature of the oil.Therefore,determining the temperature drop of the oil in the pipeline for short-term and long-term shutdown has important guiding significance for formulating restart plans and shutdown maintenance plans.Therefore,based on the historical operating data of Dongying-Linyi crude oil pipeline,the model of the alternate transmission pipeline of cold and hot crude oil was established by SPS simulation software,and the simulation results were compared with the actual working conditions to verify the simulation effect of the model.Subsequently,taking the safe shutdown of cold and hot oil alternating transmission on the Dongying-Linyi parallel crude oil pipeline as the research goal,the safety of short and long shutdown of cold and hot oil and the safety of cold and hot oil restart and flow recovery are calculated respectively.The simulation results indicate that the safety of using cold oil and hot oil for shutdown is greatly affected by environmental temperature.Both meet the requirements for inlet oil temperature in spring,autumn,and summer,and it is best to use cold oil for shutdown in winter.The use of cold oil during restart can cause a lower temperature in the mixed oil section,slow flow recovery process,and require a large amount of imported crude oil for restart,which has a significant impact on the soil temperature field along the line.

关 键 词：管道模型 顺序输送 冷热油交替 停输再启动 虚拟仿真 

分 类 号：TE832[石油与天然气工程—油气储运工程]