掺氢天然气管线化学吸附行为及泄漏特性研究  

Research on Chemical Adsorption Behavior and Leakage Characteristics of Hydrogen Doped Natural Gas Pipeline

作　　者：李云云 李云飞 郭望 赵东睿 孙旭 鲜婧 师煜凯 LI Yunyun;Li Yunfei;Guo Wang;Zhao Dongrui;Sun Xu;Xian Jing;Shi Yukai(College of Science and Technology,Xi'an Siyuan University,Xi'an Shaanxi 710038,China;Shaanxi Bangxi Chemical Co.,Ltd.,Xi'an Shaanxi 710075,China;National Pipeline Network Group Shandong Branch.,Ltd.,Jinan Shandong 250000,China;No.2 Oil Production Plant of PetroChina Company Limited Changqing Oilfield.,Ltd.,Qingyang Gansu 745100,China;China Petroleum Yumen Oilfield Branch.,Ltd.,Jiuquan Gansu 735000,China;China Petroleum Changqing Oilfield Branch Third Gas Production Plant.,Ltd.,Xi'an Shaanxi 710018,China)

机构地区：[1]西安思源学院理工学院,陕西西安710038 [2]陕西邦希化工有限公司,陕西西安710075 [3]国家管网集团山东分公司,山东济南250000 [4]中国石油长庆油田分公司第二采油厂,甘肃庆阳745100 [5]中国石油玉门油田分公司,甘肃酒泉735000 [6]中国石油长庆油田分公司第三采气厂,陕西西安710018

出　　处：《当代化工》2025年第1期134-137,252,共5页Contemporary Chemical Industry

基　　金：陕西省教育厅2023年科研计划项目(项目编号:23JK0613)。

摘　　要：通过分子模拟手段探究了掺氢天然气管壁附近的氢脆机制,利用Fluent数值软件建立了掺氢天然气管线的泄漏扩散几何模型,分析了风速、掺氢比及管线运行压力对掺氢天然气管线泄漏扩散特性的影响规律。结果表明:管线壁面附近的甲烷可以一定程度上降低氢分子的浓度;氢气扩散高度会随着风速的增加而逐渐下降,最大扩散宽度则呈现先下降后升高的规律;管线泄漏水平扩散距离及水平扩散宽度会随着掺氢比的增加而呈现不同程度的下降,但随泄漏时间的延续,反而会出现不同程度上的增加;气体泄漏扩散高度及扩散宽度则会随管线运行压力的增加而增加。The hydrogen embrittlement mechanism near the wall of hydrogen doped natural gas pipelines was explored through molecular simulation method.A geometric model of leakage diffusion in hydrogen doped natural gas pipelines was established using Fluent numerical software.The influence of wind speed,hydrogen blending ratio,and pipeline operating pressure on the leakage diffusion characteristics of hydrogen doped natural gas pipelines was analyzed.The results showed that the presence of methane near the pipeline wall could to some extent reduce the concentration of hydrogen molecules.The diffusion height of hydrogen gradually decreased with the increase of wind speed,and the maximum diffusion width showed a pattern of first decreasing and then increasing.The horizontal diffusion distance and width of pipeline leakage decreased to varying degrees with the increase of hydrogen doping ratio,but increased to varying degrees with the extension of leakage time.The height and width of gas leakage diffusion increased with the increase of pipeline operating pressure.

关 键 词：掺氢天然气管线 氢脆 泄漏扩散 扩散距离 

分 类 号：TQ028[化学工程]