基于文丘里管的天然气掺氢流动规律研究

何银博; 孙恒; 刘楚茹; 张姝; 王飞; 郑国婷; 王一凡; 卢钰铜

doi:10.12434/j.issn.2097-2547.20240387

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基于文丘里管的天然气掺氢流动规律研究

- 基于文丘里管的天然气掺氢流动规律研究
- Study of hydrogen-blending natural gas flow law based on Venturi tube
- 低碳化学与化工 2025: 1-9.
- 作者机构：
  
  1.中国石油大学（北京）油气管道输送安全国家工程研究中心，石油工程教育部重点实验室，城市油气输配技术北京市重点实验室北京102249
  2.中国石油西南油气田燃气分公司四川成都610017
- 作者简介：
  
  何银博（1999—），硕士研究生，研究方向为液氢储运与泄露数值模拟、安全预警及防护，E-mail：18739580281@163.com。
  孙恒（1976—），博士，副教授，研究方向为气液流动数值模拟技术、氢能输送与氢液化、天然气处理和液化、LNG冷能回收以及工艺动态仿真和优化，E-mail：bddukesh@163.com。
- 基金信息：
- DOI：10.12434/j.issn.2097-2547.20240387
  中图分类号： TE64
- 网络出版日期：2025-01-13，
  
  收稿日期：2024-09-14，
  
  修回日期：2024-11-11，
- 稿件说明：
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何银博, 孙恒, 刘楚茹, 等. 基于文丘里管的天然气掺氢流动规律研究[J/OL]. 低碳化学与化工, 2025,1-9.

HE YINBO, SUN HENG, LIU CHURU, et al. Study of hydrogen-blending natural gas flow law based on Venturi tube. [J/OL]. Low-carbon chemistry and chemical engineering, 2025, 1-9.
何银博, 孙恒, 刘楚茹, 等. 基于文丘里管的天然气掺氢流动规律研究[J/OL]. 低碳化学与化工, 2025,1-9. DOI： 10.12434/j.issn.2097-2547.20240387.

HE YINBO, SUN HENG, LIU CHURU, et al. Study of hydrogen-blending natural gas flow law based on Venturi tube. [J/OL]. Low-carbon chemistry and chemical engineering, 2025, 1-9. DOI： 10.12434/j.issn.2097-2547.20240387.

摘要

利用现役的天然气管道掺氢混输，是实现氢气大规模、长距离和低成本储运的有效方法。开发高效便捷的掺氢设备，增大天然气和氢气的掺混均匀度，有利于提高氢气输送效率、保障管道长距离输送及下游用气安全。利用文丘里管作为掺氢设备，用甲烷替代天然气，将甲烷和氢气进行掺混，采用数值模拟的方法，研究了不同的掺混结构和工况对甲烷和氢气掺混流动过程及掺混均匀度的影响。结果表明，在T型管道后添加文丘里管可以增大掺混均匀度。在模拟工况下，当管喉比（文丘里管喉管段与直管段直径比）为1/3时，掺混效果最好；当掺氢比（氢气与甲烷的质量分数比）为15%时，掺混效果最好，掺混均匀度随着掺氢比的增大而增大。与静态掺混器相比，即使甲烷流速较小，添加了文丘里管的管道内仍可保持较大的掺混均匀度。运行压力越小，掺混均匀度波动越小，掺混过程更稳定。

Abstract

Utilizing the existing natural gas pipelines for hydrogen blending is an effective method for achieving large-scale

long-distance

and low-cost storage and transportation of hydrogen. Developing efficient and convenient hydrogen blending device and improving the blending uniformity of hydrogen and natural gas can improve hydrogen transportation efficiency and ensure long-distance pipeline transportation and downstream gas safety. Using a Venturi tube as the hydrogen blending device

methane was used instead of natural gas to mix methane and hydrogen. By numerical simulation method

the influence of different blending structures and operating conditions on the flow process and blending uniformity of methane and hydrogen was studied. The results show that adding a Venturi tube after T-shaped pipeline can effectively improve the blending uniformity. Under the simulated operating conditions

the best blending effect is achieved when the tube-throat ratio (diameter ratio of throat section to straight section of the Venturi tube) is 1/3. When the hydrogen blending ratio (mass fraction ratio of hydrogen to methane) is 15%

the blending effect is the best

and the blending uniformity increases with the increase of the hydrogen blending ratio. Compared with static mixing devices

even with low methane flow rates

the pipeline with added a Venturi tube can still maintain great mixing uniformity. The lower the operating pressure

the smaller the fluctuation of blending uniformity

and the more stable the blending process.

关键词

天然气掺氢文丘里管掺混均匀度掺氢比流体流动规律

Keywords

hydrogen-blending natural gasVenturi tubeblending uniformityhydrogen blending ratiofluid flow law

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