Journal of Petrochemical Universities

Journal of Petrochemical Universities ›› 2014, Vol. 27 ›› Issue (1): 84-89.DOI: 10.3969/j.issn.1006-396X.2014.01.017

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Study on the GasMixing Section Length during Nitrogen  Replacement of Natural Gas Operation in Gas Pipeline

  

  1. (1. Department of Oil and Gas Storage and Transportation, China University of Petroleum, Beijing 102249, China;  2. China National Petroleum Corporation Pipeline Company, Langfang Hebei 065000,China)
  • Received:2013-06-05 Revised:2013-09-09 Online:2014-02-25 Published:2014-06-10

天然气管道氮气隔离混气长度研究

  

  1. ( 1. 中国石油大学( 北京) 油气储运工程系, 北京1 0 2 2 4 9; 2. 中国石油管道公司, 河北廊坊0 6 5 0 0 0)
  • 作者简介:黄启玉( 1 9 6 9 - ) , 男, 博士, 研究员, 从事长距离输送管道技术和油库安全方向研究; E - m a i l : h u a n g_q i _y u@s i n a. c o m。
  • 基金资助:
    国家自然科学基金项目“ 油包水型乳状液蜡分子扩散和蜡晶颗粒沉积机理研究暠 ( 5 1 3 7 4 2 2 4) 。

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Abstract: The gas diffusion coefficient and therefore gasmixing section length was studied by using onedimension mathematical model in combination with three different methods for calculating gas diffusion coefficient (Taylor, TaylorCW and G.R.I). In addition, the predominant factors in affecting the gasmixing section length were also investigated, including pipeline length, diameter and velocity of the flow. And the comparison between the calculation results and field data show that TaylorCW method can reflect the field practice better. The relative errors of the results for three domestic pipelines are 397%, 23.4% and 22.0%, respectively.

Key words: Natural gas pipeline,    ,  Nitrogen gas replacement,    ,  Gasmixing section length,    ,  Data comparison

摘要： 基于一维混合模型研究天然气管道投产过程中气体的混合规律, 利用T a y l o r 、 T a y l o r 灢 CW、 G. R. I 3种不同方法分别计算出气体扩散系数及投产过程中形成的天然气 灢 氮气混气段长度, 分析了管道置换过程中影响混气长度的主要因素, 包括管长、 管径及流速。由T a y l o r 灢 CW 方法计算出的结果与现场数据最为接近, 用该方法验证国内3条已投产管道所得的相对误差分别为3 9. 7%、 2 3. 4%、 2 2. 0%。

关键词: 天然气管道,    ,  氮气隔离,    ,  混气长度,   ,  现场对比

Cite this article

Huang Qiyu, Cao Xinxin, Tang Junqi,et al. Study on the GasMixing Section Length during Nitrogen  Replacement of Natural Gas Operation in Gas Pipeline[J]. Journal of Petrochemical Universities, 2014, 27(1): 84-89.

黄启玉, 曹鑫鑫, 唐骏琪, 许琛琛, 兰浩. 天然气管道氮气隔离混气长度研究[J]. 石油化工高等学校学报, 2014, 27(1): 84-89.

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