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科技导报  2014 

天然气管输减阻剂减阻技术的研究与应用

DOI: 10.3981/j.issn.1000-7857.2014.004, PP. 34-39

Keywords: 天然气管输减阻剂减阻机制,加剂装置,喷嘴结构优化

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Abstract:

通过电镜微观试验研究,揭示了天然气减阻剂的减阻机制。通过对减阻剂加剂装置关键结构仿真优化表明旋流雾化喷嘴的旋流室内锥角为100°时雾化效果最佳;喷孔直径的变化可改变减阻剂喷射的轴向速度,有利于增大喷射距离,但雾化角减小,喷孔直径为1.4mm时,喷嘴的雾化效果最佳;旋流室切向孔角度对旋流室内部速度流场的影响较大,切向角为14°时喷嘴雾化效果最佳;通过实验室及现场试验,得出了合理加剂量的计算公式。本研究对天然气管输减阻剂减阻技术的推广与应用具有指导意义。

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