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含CO2多相流相态的非均匀性对输油管冲刷腐蚀的影响
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科技导报 |研究论文 2009 , 27 (0916) : 49 -52
含CO2多相流相态的非均匀性对输油管冲刷腐蚀的影响
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魏丹1,2,叶东3,王献昉1,陈长风1,白真权4,李鹤林4
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魏丹
Effect of Nonuniformity of Multi-phase Flow with CO2 on Erosion Corrosion of Pipeline
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    出版时间: 2009-08-28
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    以研究含CO2多相流相态的非均匀性对输油管冲刷腐蚀的影响为目的,利用多相流环路实验装置进行冲刷腐蚀试验,并借助高速数字摄像系统观测多相流相态,考查石油多相混输管中的冲刷腐蚀与多相流的相态结构相关性。对水平管弹状流下的CO2腐蚀试验研究表明,水平管的底部较之于顶部有更为显著的冲刷腐蚀,这种冲刷腐蚀在管道上、下不同部位的差异性源于弹状流相态的非均匀分布。提出了含CO2多相流冲刷腐蚀的水动力学模型,模型计算结果表明,弹状流流型下水平管下部的冲刷腐蚀速率高于上部的冲刷腐蚀速率。水平管弹状流条件下腐蚀产物膜的磨损程度随流体速度的增大而增大。计算结果与试验观测相符,均表明多相流相态的非均匀性使管道下部更易遭受腐蚀损坏。
    多相流  /  弹状流  /  连续波
    The paper studies the effect of non-uniformity of multi-phase flow with CO2 on erosion corrosion of pipeline. The erosion corrosion tests were carried out in the multi-phase flow loop test system and the non-uniform structure of multi-phase flow in horizontal pipeline was measured by using high-speed digital photography system. The relationship between the erosion corrosion of pipeline and the structure of the flow was examined. The tests of the CO2 corrosion of horizontal pipeline under slug flow show that the bottom surface of the pipe is corroded more distinctly than the upper surface due to the non-uniform distribution of the slug flow. A hydrodynamic model of erosion corrosion of multi-phase flow with CO2 is proposed to determine the corrosion rates of the up- and down- walls of the horizontal pipelines. The wearing degree of corrosion film under the condition of slug flow increases with the increase of flow velocity. The computed results agree with the actual measured results, to show that the non-uniformity of multi-phase flow will result in a more severe corrosion of the bottom of a horizontal pipe than of the upper surface.
    multi-phase flow  /  slug flow  /  continuous wave
    魏丹;叶东;王献昉;陈长风;白真权;李鹤林. 含CO2多相流相态的非均匀性对输油管冲刷腐蚀的影响. 科技导报, 2009 , 27 (0916) : 49 -52 .
    . Effect of Nonuniformity of Multi-phase Flow with CO2 on Erosion Corrosion of Pipeline[J]. Science & Technology Review, 2009 , 27 (0916) : 49 -52 .

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    2种不同金属材料的力学参数

    Family
    属数
    Number of
    genus
    种数
    Number of
    species
    占总种数比例
    Percentage of
    total species (%)

    Genus
    种数
    Number of
    species
    占总种数比例
    Percentage of total
    species (%)
    鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
    小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
    多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
    红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
    小菇属 Mycena 11 5.26
    光柄菇属 Pluteus 5 2.39
    红菇属 Russula 17 8.13
    栓菌属 Trametes 5 2.39
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