摘要
采用非金属聚乙烯(PE)管道输送纯氢和掺氢天然气可有效避免金属管道的氢脆。但由于材料特性,PE管道在输送过程中存在一定程度的气体渗漏,造成能源浪费和引发安全问题。为选择合适的PE管材和确定输送条件,需深入揭示氢气/甲烷在PE材料中的渗透扩散机理和了解研究方法。本文以文献调研的方式,在微观角度从溶解和扩散两方面揭示了气体在PE材料中的渗透机理;综述了常用于研究氢气、甲烷和氢气/甲烷混合气体在PE材料中溶解、扩散和渗透性能的常用实验方法和数值模拟方法的研究进展,其中实验方法主要有膜渗透实验法和全尺寸渗透实验法,数值模拟方法主要有分子动力学模拟法和数学模型法。根据研究进展,讨论并指出了实验方法和数值模拟方法中存在的问题,并针对当前研究的不足指出了未来的研究重点和发展趋势。本文可为纯氢及掺氢天然气在PE管道中的安全输送提供参考。
It can avoid hydrogen embrittlement existing in metal pipelines by using non-metallic polyethylene(PE)pipelines to transport pure hydrogen and hydrogen-enriched natural gas.However,due to the material characteristics,there is a certain degree of gas leakageand permeation in the transportation process of PE pipeline,resulting in energy waste and safety problems.To select suitable PE pipeline materials and determine the transportation parameters,it is necessary to deeply reveal the mechanism of permeation and diffusion of hydrogen/methane in PE material and explore the research methods for studying the permeation properties of hydrogen/methane in PE.In this paper,by means of literature review,the permeation mechanism of gas in PE materials is introduced from the aspects of dissolution and diffusion at the microscopic point.In addition,the research progress of experimental methods and numerical simulation methods for the solubility,diffusion and permeability of hydrogen,methane and hydrogen/methane mixtures in PE material are reviewed.The experimental methods mainly include membrane permeation experiment and full-scale pipe permeation experiment,and the numerical simulation methods include molecular dynamics simulation method and mathematical model method.According to the research status,the problems existing in experimental methods and numerical simulation methods are discussed and pointed out.Finally,the future research focus and development trend are proposed in view of the shortcomings of the current research.This paper can provide reference for the safe transportation of hydrogen and hydrogen-enriched natural gas in PE pipelines.
作者
郑度奎
李敬法
宇波
黄志强
张引弟
刘翠伟
赵杰
韩东旭
ZHENG Dukui;LI Jingfa;YU Bo;HUANG Zhiqiang;ZHANG Yindi;LIU Cuiwei;ZHAO Jie;HAN Dongxu(School of Petroleum Engineering,Yangtze University,Wuhan 430100,China;School of Mechanical Engineering and Hydrogen Energy Research Center,Beijing Institute of Petrochemical Technology,Beijing 102617,China;College of Pipeline and Civil Engineering,China University of Petroleum(East China),Qingdao266580,Shandong,China)
出处
《材料导报》
EI
CAS
CSCD
北大核心
2024年第16期258-268,共11页
Materials Reports
基金
国家重点研发计划“氢能技术”重点专项资助(2021YFB4001601)。
关键词
氢气
聚乙烯管道
渗透性能
溶解度系数
扩散系数
实验研究
分子动力学模拟
hydrogen
polyethylene pipelines
permeability
solubility coefficient
diffusion coefficient
experimental study
molecular dynamics simulation
作者简介
郑度奎,2017年6月、2020年6月分别于广东石油化工学院和长江大学获得工学学士学位和硕士学位。现为长江大学石油工程学院博士研究生,目前主要研究方向为纯氢/掺氢天然气在非金属管道中的渗透性与相容性;通信作者:李敬法,北京石油化工学院机械工程学院副研究员、硕士研究生导师。2012年西南石油大学油气储运工程专业本科毕业,2017年中国石油大学(北京)油气储运工程专业博士毕业。目前主要从事纯氢/掺氢天然气安全高效输送技术、流动与传热数值计算方法等方面的研究工作。以第一或通信作者发表SCI论文近30篇,包括International Journal of Heat and Mass Transfer、International Communications in Heat and Mass Transfer、Journal of Natural Gas Science and Engineering、Petroleum Science等。lijingfa@bipt.edu.cn。
