兰成渝管道混油异常原因分析与处理技术

Abnormal Event Analysis and Treatment of Mixed Oil of the Lan-Cheng-Yu Pipeline

成品油管道在顺序输送过程中会产生混油,减少混油量成为管道运行中的重点和难点。针对兰成渝成品油管道混油异常增多问题,分别选取混油正常、异常2种工况为研究对象,通过混油量的理论计算和现场运行数据对比分析,找到了混油异常增多的原因是江油站越站流程存在缺陷,提出了在江油站越站流程中的单向阀之前加装截断球阀的改进措施。现场数据的验证结果表明:改进措施较好地解决了混油异常问题。

Mixed oil will be produced while the product oil pipeline is transported by batch. The difficulty and keynote of op- erating pipeline is how to reduce the quantity of mixed oil per batch. In order to find the reason of abnormal amount of mixed oil of the Lan-Cheng-Yu pipeline, normal and abnormal conditions were both selected and studied. The reason of mixed oil in- creased abnormally was found by theory calculation and field operation data analysis. It was because the fault of the bypass proce- dure of Jiangyou station. And the improvement measure of adding a block valve before the one-way valve of the bypass procedure was proposed. The results show that the measure solves the problem well.