Influence of Long Transmission Natural Gas Properties on Internal Corrosion of Pipeline

doi:10.3969/j.issn.1006-396X.2015.02.014

Journal of Petrochemical Universities ›› 2015, Vol. 28 ›› Issue (2): 69-72.DOI: 10.3969/j.issn.1006-396X.2015.02.014

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Influence of Long Transmission Natural Gas Properties on Internal Corrosion of Pipeline

Received:2014-07-24 Revised:2014-09-27 Published:2015-04-25 Online:2015-06-23

长输天然气气质对管道内腐蚀的影响研究

李欣¹, 李进²

( 1. 中海石油管道输气有限公司, 海南海口5 7 0 1 0 5; 2. 海南大学材料与化工学院, 海南海口5 7 0 2 2 8)

通讯作者: 李进( 1 9 7 4 - ) , 男, 博士, 副教授, 从事生物质新能源和石油化工研究; E - m a i l : 3 1 6 8 0 0 6 8 1@q q. c o m。
作者简介:李欣( 1 9 7 9 - ) , 女, 工程师, 从事长输天然气管道的研究; E - m a i l : l i x i n 2@c n o o c . c o m. c n。
基金资助:
海南省重点科技计划项目( Z DXM 2 0 1 2 0 0 7 2) ; 海南大学校青年基金( q n j j 1 4 2 0) 。

Abstract

Abstract: The properties of DongfangYangpuHaikou and DongfangSanya pipeline natural gas were analyzed, the content of CO2 was 4.94%(mol) and 8.21%(mol) respectively, which was more than 3%(mol) required in standard (Q/SY 30—2002). The content of H2S was 25.2 mg/m3 in the DongfangSanya pipeline natural gas, which was also more than standard of 20 mg/m3. So, the chemical corrosion of DongfangSanya pipeline was serious. By the test of sulfate reducing bacteria cultivating, sulfate reducing bacteria corrosion was proved in DongfangYangpuHaikou pipeline, although it was very slight.

Key words: Natural gas, , Transmission pipeline, , Corrosion, , Carbon dioxide, , Sulfureted hydrogen

摘要： 对东方 - 洋浦 - 海口和东方 - 三亚管输天然气气质进行分析, 结果表明, CO2 气体摩尔分数分别为4. 9 4% 和8. 2 1%, 大于中国石油企业标准( Q / S Y3 0—2 0 0 2) 要求的3%。东方 - 洋浦 - 海口天然气的 H2S含量较低, 东方 - 三亚 H2S的质量浓度为2 5. 2m g /m3, 高于标准要求的2 0m g /m3。因此, 东方 - 三亚输气管道 H2S和CO2 化学腐蚀较重。通过硫酸盐还原菌培养实验证明东方 - 洋浦 - 海口管线存在硫酸盐还原菌腐蚀, 但腐蚀较轻。

关键词: 天然气, 长输管道, 腐蚀, 二氧化碳, 硫化氢

Li Xin, Li Jin. Influence of Long Transmission Natural Gas Properties on Internal Corrosion of Pipeline[J]. Journal of Petrochemical Universities, 2015, 28(2): 69-72.

李欣, 李进. 长输天然气气质对管道内腐蚀的影响研究[J]. 石油化工高等学校学报, 2015, 28(2): 69-72.

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Influence of Long Transmission Natural Gas Properties on Internal Corrosion of Pipeline

长输天然气气质对管道内腐蚀的影响研究

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