LNG卸料管线预冷过程数值模拟

发布时间：2018-01-17 18:20

本文关键词：LNG卸料管线预冷过程数值模拟　出处：《化工进展》2016年02期 　论文类型：期刊论文

【摘要】：国内对液化天然气(LNG)接收站初次预冷速度的控制经验相对缺乏。因此,为防止低温LNG预冷导致的管道的损坏,需在预冷前对设定的预冷操作程序进行预冷效果的分析校核。本文提出了基于计算流体力学(CFD)的LNG管道预冷分析方法。通过建立三维LNG卸料管道数值计算模型,根据国内某LNG接收站项目设计管道预冷操作程序,进行冷却过程的动态模拟计算,结果显示按预设冷却程序操作,LNG卸料管道降温速度可以维持在10℃/h范围内,满足预冷安全要求。另模拟计算结果与实际接收站预冷过程的现场测量数据进行了对比,CFD计算值与实测值比较相对误差可控制在7%以内,证明CFD预冷过程模拟完全可以用于接收站预冷程序合理性的判断和校核计算。
[Abstract]:For domestic liquefied natural gas (LNG) receiving control station first experience cooling rate is relatively lacking. Therefore, in order to avoid the damage of pipeline caused by LNG low temperature precooling, analysis to the pre cooling effect of the pre cooling operation procedures set in the pre cooling before. In this paper, based on computational fluid dynamics (CFD) LNG analysis method of pipeline pre cold. Through the establishment of three-dimensional LNG discharge pipeline numerical calculation model, based on a domestic LNG terminal project design of pipeline pre cooling operation procedure, the dynamic simulation of cooling process calculation results show that according to the preset cooling procedure, LNG discharge pipe cooling speed can be maintained at 10 DEG /h range. Meet the safety requirements of pre cooling. The other simulation results and actual measurement data receiving station pre cooling process were compared, CFD calculated values of relative error can be controlled within 7% and the measured value, proved the CFD pre cooling process model The proposed method can be used to judge and check the rationality of the pre cooling program of the receiving station.

【作者单位】：中海油福建漳州天然气有限责任公司;
【分类号】：TE973
【正文快照】： 近年来,国内煤炭作为主要能源供应所带来的环境问题日趋严重,城市大气污染加重且为人们所关注。为此,各地政府部门对清洁能源的支持力度不断加大。天然气作为一种优质、高效、方便的清洁能源和化工原料[1],资源储量巨大,是可靠的环保型替代能源。但国内石油天然气资源的储量有

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