非金属管材临氢环境下相容性研究进展  

Research progress on compatibility of non-metallic pipes in hydrogen environment

作　　者：刘翠伟[1,2] 张睿 田磊[3] 王财林[1,2] 徐修赛 裴业斌 李玉星 LIU Cuiwei;ZHANG Rui;TIAN Lei;WANG Cailin;XU Xiusai;PEI Yebin;LI Yuxing(College of Pipeline and Civil Engineering,China University of Petroleum(East China),Qingdao,Shandong 266580,China;Provincial Key Laboratory of Oil and Gas Storage and Transportation Security,China University of Petroleum(East China),Qingdao,Shandong 266580,China;Institute of Energy,Academy of Macroeconomic Research,Beijing 100032,China)

机构地区：[1]中国石油大学(华东)储运与建筑工程学院,山东青岛266580 [2]中国石油大学(华东)山东省油气储运安全省级重点实验室 [3]中国宏观经济研究院能源所

出　　处：《天然气工业》2022年第9期145-156,共12页Natural Gas Industry

基　　金：国家重点研发计划项目“中低压纯氢与掺氢燃气管道系统渗氢扩散机理与相容性研究”(编号:2021YFB4001601)。

摘　　要：非金属聚合物材料已被大规模用作中、低压燃气管道管材,其临氢环境下与氢的相容性研究对于掺氢天然气输送的发展具有重要意义。为此,综述了现有的非金属聚合物管材在氢环境中的气体渗透性能以及力学性能劣化研究,分析了温度、氢压、材料微观结构等因素对非金属管材渗透性能以及力学性能的影响,指出了目前研究存在的不足并对未来研究方向进行了展望。研究结果表明:(1)低氢压下,非金属管材的渗透性能与力学性能几乎不受氢环境影响,随温度升高,非金属管材的渗透系数增大,力学性能降低;(2)氢气分子在非金属材料中的渗透系数大于甲烷分子,各气体间的渗透系数相互独立,材料结晶度等微观结构参数能够影响材料在临氢环境下的渗透性能和力学性能;(3)气体泄漏是影响非金属管材运行安全的主要因素,其主要途径以及泄漏速率可以作为评价临氢环境下非金属管材适用性的主要指标;(4)和热塑性管材相比,弹性体密封件氢渗透性能更差,容易发生溶胀而导致其物性变化,直接影响掺氢非金属管道的安全运行。结论认为:(1)后续需开展多因素耦合条件下非金属氢管道寿命预测模型、非金属管材临氢服役性能评价准则、密封件及密封材料临氢适用性评价技术方法与评价准则等方面的研究工作;(2)建议建立掺氢环境下非金属管道建设与运行的相关规范以及安全评价方法,形成相关标准规范,以期为非金属管道掺氢输送的发展和大规模应用奠定基础。Non-metallic polymer has been extensively applied in medium-and low-pressure gas pipelines, so to study its hydrogen compatibility in a hydrogen environment is of great significance to the development of hydrogen-blended natural gas transportation.In this paper, the existing researches on the gas permeability and mechanical properties of non-metallic polymer pipes in a hydrogen environment are reviewed. Then, the influences of temperature, hydrogen pressure, material microstructure on them are analyzed.Finally, the deficiencies of current researches are pointed out and the future research direction is predicted. And the following research results are obtained. First, under low hydrogen pressure, the permeability and mechanical properties of non-metallic pipe are hardly influenced by a hydrogen environment. And as temperature increases, the permeability coefficient of non-metallic pipes increases and the mechanical properties decrease. Second, the permeability coefficient of hydrogen molecule in non-metallic materials is higher than that of methane molecule, permeability coefficient of each gas is independent, and microstructure parameters(e.g. material crystallinity) can influence the permeability and mechanical properties in a hydrogen environment. Third, gas leakage is an important factor influencing the operation safety of non-metallic pipes, and the main leakage path and leakage rate can be used as the main indicators for evaluating the applicability of non-metallic pipes in a hydrogen environment. Fourth, compared with thermoplastic pipes, elastomer seals are worse in hydrogen permeability and swell easily, leading to the change of their physical properties, which directly affects the safe operation of hydrogen-blended non-metallic pipelines. It is concluded that in the following step, it is necessary to research the life prediction model of non-metallic hydrogen pipelines under multi-factor coupling conditions, the service performance evaluation criteria of non-metallic pipes in a hydrogen environment, and

关 键 词：非金属管道 聚合物 氢能 掺氢输送 氢渗透 拉伸性能 氢相容性 微观结构 

分 类 号：TE973[石油与天然气工程—石油机械设备] TQ317[化学工程—高聚物工业]