| 天然气管道氮气隔离混气长度研究 |
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| 引用本文： | 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(1):84-89. |
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| 作者姓名： | 黄启玉 曹鑫鑫 唐骏琪 许琛琛 兰浩 |
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| 作者单位： | [1]中国石油大学 （北京 ）油气储运工程系,北京102249 [2] 中国石油管道公司,河北廊坊065000 |
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| 基金项目： | 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”（51374224）. |
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| 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Taylor、Taylor-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-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Taylor-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39.7%、23.4%、22.0%。
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| 关 键 词： | 天然气管道 氮气隔离 混气长度 现场对比 |
Study on the Gas-Mixing Section Length during Nitrogen Replacement of Natural Gas Operation in Gas Pipeline |
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| Huang Qiyu,Cao Xinxin,Tang Junqi,Xu Chenchen,Lan Hao.Study on the Gas-Mixing Section Length during Nitrogen Replacement of Natural Gas Operation in Gas Pipeline[J].Journal of Petrochemical Universities,2014(1):84-89. |
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| Authors: | Huang Qiyu Cao Xinxin Tang Junqi Xu Chenchen Lan Hao |
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| Affiliation: | 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) |
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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 . |
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| Keywords: | Natural gas pipeline Nitrogen gas replacement Gas-mixing section length Data comparison |
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