输气管道干燥施工水露点验收指标

发布时间：2018-04-21 09:10

本文选题：输气管道 + 水含量　；参考：《油气储运》2017年09期

【摘要】：输气管道通常采用清管器扫线和干空气吹扫方法进行干燥,然而此方法不能保证干燥效果,导致管道投产升压后存在生成水合物和冰堵的风险。为了验证输气管道建设时期干燥作业施工效果,开展了干燥施工水露点验收指标合理性研究。根据PR方程得到了计算混合气体中水露点与水含量之间的转换关系,并且编制了计算软件。以某输气管道为例提出了干燥验收时水露点指标值的计算过程,指出了SY/T 4114-2008《天然气输送管道干燥施工技术规范》中关于水露点控制指标存在的不足,即未考虑压力对水露点的影响。基于管道工艺设计参数给出不同压力下输气管道干燥施工水露点验收指标参考值,从而可以保证输气管道投产运行后的干燥效果。
[Abstract]:Gas pipeline is usually dried by pipe-cleaning and dry air blowing, but this method can not guarantee the drying effect, which leads to the risk of hydrate formation and ice plugging after the pipeline is put into production. In order to verify the effect of dry operation during the construction of gas transmission pipeline, the rationality of water dew point acceptance index in dry construction was studied. According to PR equation, the conversion relationship between water dew point and water content in mixed gas is obtained, and the calculation software is developed. Taking a gas pipeline as an example, this paper puts forward the calculation process of water dew point index during drying acceptance, and points out the deficiency of water dew point control index in SY/T 4114-2008 "Technical Specification for drying Natural Gas Pipeline". That is to say, the influence of pressure on dew point of water is not considered. Based on the parameters of pipeline process design, the reference values of water dew point for dry construction of gas pipeline under different pressures are given, so as to ensure the drying effect of gas pipeline after it is put into operation.
【作者单位】：中国石油管道科技研究中心/中国石油集团公司油气储运重点实验室;中国石油西气东输管道公司武汉管理处;中石油管道联合有限公司西部兰州输气分公司;
【基金】：中国石油管道公司科研项目“大口径高压力天然气管道水合物防治技术研究”,20170101
【分类号】：TE973

【相似文献】