民用天然气管道掺氢分层实验研究
Experimental study on hydrogen-blending stratification in residential gas pipelines
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- 引用格式:
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王涛,陈赵均,王午琦,吴尚儒,唐闻.民用天然气管道掺氢分层实验研究[J].天然气与石油,2025,43(5):119-124.doi:10.3969/j.issn.1006-5539.2025.05.015
WANG Tao, CHEN Zhaojun, WANG Wuqi, WU Shangru, TANG Wen.Experimental study on hydrogen-blending stratification in residential gas pipelines[J].Natural Gas and Oil,2025,43(5):119-124.doi:10.3969/j.issn.1006-5539.2025.05.015
- DOI:
- 10.3969/j.issn.1006-5539.2025.05.015
- 作者:
- 王涛1 陈赵均1 王午琦2 吴尚儒3 唐闻4
WANG Tao1, CHEN Zhaojun1, WANG Wuqi2, WU Shangru3, TANG Wen4
- 作者单位:
- 1. 浙江能源天然气集团有限公司, 浙江 杭州 310012; 2. 中国石油大学(华东), 山东 青岛 266580; 3. 平湖市天然气有限公司, 浙江 嘉兴 314200; 4. 中国石油工程建设有限公司西南分公司, 四川 成都 610041
1. Zhejiang Energy and Natural Gas Group Co., Ltd., Hangzhou, Zhejiang, 310012, China; 2. China University of Petroleum(East China), Qingdao, Shandong, 266580, China; 3. Pinghu Natural Gas Co., Jiaxing, Zhejiang, 314200, China; 4. CPECC Southwest Company, Chengdu, Sichuan, 610041, China
- 关键词:
- 掺氢天然气;掺混;分层
Hydrogen-blended natural gas; Blend; Stratification
- 摘要:
现有天然气管道进行氢气混输是一种流行的大规模氢能运输方法,若将掺氢天然气通入民用天然气管道进行使用,天然气管道掺氢的混合装置的混合效果以及在民用天然气管道中流动和静置条件下的分层情况备受业内关注。依托某掺氢天然气项目进行了民用天然气立管通入掺氢天然气流动与静置分层的实验,结果表明:将混合完全的掺氢天然气通入民用天然气管道过程中，顶部与底部的氢气浓度差值≤0.04%,此时流动分层现象可以忽略;当掺氢天然气在管道中处于静止状态时,每24 h采集1次气体样本,在3次取气压力条件下,顶部氢气浓度的数值变化 ≤0.2%,在这种情况下,氢气的组分和居民用气环境对分层的影响微乎其微。实验结果与之前相关研究的内容基本一致,对民用天然气管道掺氢运维安全具有重要指导意义。
The use of existing natural gas pipelines for hydrogen blending is a popular method for large-scale hydrogen transmission. If hydrogen-blended natural gas is to be introduced into residential gas pipelines, the mixing effect of the natural gas blending device and the stratification behavior under flowing and static conditions in residential gas pipelines are of great concern to the industry. This paper, relies on the Zheneng hydrogen-blended natural gas project, carries out experiments on riser stratification. The results show that for residential gas pipelines, when fully mixed hydrogen-blended natural gas is introduced, the hydrogen concentration difference between the top and the bottom of the pipeline during the introduction process does not exceed 0.04%, meaning that dynamic stratification can be ignored. When the gas in the pipeline is static, gas samples were taken every 24 hours, and under 3 different gas withdrawal pressure conditions, the hydrogen concentration at the top varied by no more than 0.2%. In this case, the impact of hydrogen composition and the residential gas pipeline environment on stratification is negligible. The study results are basically consistent with previous studies and provide important guidance for the safe operation and maintenance of hydrogen blending in residential gas pipelines.
