LNG接收站海水泵与开架式气化器节能优化研究  

Energy Saving Optimization of Seawater Pump and Open Rack Vaporizer in LNG Receiving Station

作　　者：李华 于子峰 刘海涛 李柏松 古自强 邵强 王海军 Li Hua;Yu Zifeng;Liu Haitao;Li Baisong;Gu Ziqiang;Shao Qiang;Wang Haijun(China Oil&Gas Pipeline Network Corporation;College of Mechanical and Transportation Engineering,China University of Petroleum(Beijing))

机构地区：[1]国家石油天然气管网集团有限公司,天津市300457 [2]中国石油大学(北京)机械与储运工程学院

出　　处：《石油机械》2024年第12期44-52,共9页China Petroleum Machinery

基　　金：国家重点研发计划“智能传感器”重点专项2022年度定向项目“跨地域复杂油气管网安全高效运行状态监测传感系统及应用”(2022YFB3207600);国家石油天然气管网集团有限公司科学研究与技术开发项目“国产化设备持续跟踪与应用效果评价”(CLZB202202)。

摘　　要：针对LNG接收站开架式气化器(ORV)在LNG气化过程中能耗偏高的问题,在考虑季节外输量差异的情况下,结合海水泵运行性能、阀门特性、海水泵池液位及管道阻力损失因素,建立海水泵出口至ORV入口的管网模型,通过调节海水泵阀门开度及海水泵运行数量来优化模型的海水供应量,并利用现场试验验证了模型准确性。研究结果表明:优化模型为海水泵运行提供了可靠的阀门开度及对应流量值预测,完全满足实际流量调控的需求;该优化模型在节能降耗方面效果显著,相比未优化前的运行方案海水泵能耗降低30%以上。所得结论可为LNG接收站可持续运行及实现节能降耗目标提供技术支持。In order to solve the problem of high energy consumption during LNG gasification in open rack vaporizer(ORV)at LNG receiving stations,taking into account seasonal differences in export volume,combined with the operational performance of seawater pump,valve characteristics,seawater pump sump level and pipeline resistance loss factors,a pipeline network model from the outlet of seawater pump to the inlet of ORV was built.The seawater supply of the model was optimized by adjusting the valve opening of the seawater pump and the number of seawater pumps in operation,and the accuracy of the model was verified through field test.The research results show that the optimization model provides reliable valve opening and corresponding flow rate prediction for the operation of seawater pumps,which can fully meet the needs of actual flow regulation.The optimization model has a significant effect on energy saving and consumption reduction,reducing the energy consumption of seawater pumps by more than 30%compared to the operating plan before optimization.The conclusions provide technical support for the sustainable operation of LNG receiving stations and the achievement of energy saving and consumption reduction goals.

关 键 词：LNG接收站 海水泵 开架式气化器 管网模型 运行匹配 节能降耗 

分 类 号：TE965[石油与天然气工程—石油机械设备]