采用含蜡模拟油和空气为实验介质，利用蜡沉积实验环道，研究间歇流流型下气、液相折算速度和温度对蜡沉积速率的影响，并结合高温气相色谱探讨沉积物碳数分布的变化规律。结果如下：在间歇流流型下，沉积物分布在整个管壁内，且形状随气、液两相折算速度的变化而变化；平均蜡沉积厚度随着气相折算速度的增大而减小，随液相折算速度的增加先增后减；固定管壁温度不变，平均蜡沉积厚度随着油温的增加先增加后减小；固定油温不变，蜡沉积量随着壁温的增加逐渐减少；气液相流速的增大均会导致沉积物的硬度增大（表现为沉积物碳数分布的变化）。
This work studies the effects of oil and gas superficial velocities and temperature on wax deposition thickness and carbon number distribution for intermittent flow of waxy mineral white oil and high-pressure air. The results are shown as follows: the wax deposit around the whole pipe, and the shape changes with the oil and gas superficial velocities. The equivalent deposit thickness decreases with increase of gas velocity, while with increase of oil velocity the deposit thickness increases first and then decreases. Equivalent deposit thickness increases first and then decreases with increase of oil temperature, while decreases with increase of wall temperature at a constant oil temperature. Increases of oil and gas velocities lead to increase of deposition hardness, which is characterized by variation of carbon number.
[1] 段纪淼,宫敬,张宇,等.多相混输管道蜡沉积研究进展[J].油气储运,2011,30(4):241-248.
[2] 王玮,宫敬.石油多相管流蜡沉积研究进展[J].化工机械,2006,33(4):198-203.
[3] Jennings D W, Weispfennig K. Effects of shear and temperature on wax deposition:coldfinger investigation with a gulf of Mexico Crude Oil[J]. Energy & Fuels, 2005, (19):1376-1386.
[4] Lund H J. Investigation of paraffin deposition during single-phase liquid flow in pipelines[D]. Tulsa:University of Tulsa,1998.
[5] 张宇.多相流动体系中蜡沉积规律研究[D].北京:中国石油大学(北京), 2011.
[6] Matzain A, Zhang H Q. Investigation of paraffin deposition during multiphase flow in pipelines and wellbores. Part1:experiments[C]//Proceedings of ETCE/OMAE2000 Joint Conference on Energy for the New Millenium, New Orleans, LA, 2000:753-759.
[7] Gong J, Zhang Y, Liao L, et al.Wax deposition in the oil/gas two-phase flow for a horizontal pipe[J].Energy & Fuels, 2011, 25(4):1624-1632.
[8] 黄启玉, 张劲军,严大凡. 一种新的蜡沉积模型[J]. 油气储运, 2003, 22(11):22-25.
[9] Hsu J J C, Santamaria M M, Brubaker J P. Wax deposition of waxy live crude under turbulent flow conditions[C]//The 69th Annual Technical Conference and Exhibition, New Orleans, LA, 1994.
[10] 李凤艳,赵天波,冀德坤. 气相色谱法则定石蜡正异构烃及碳数分布积分方式的选择[J]. 分析化学, 1995, 23(10):1208-1210.
[11] Singh P,Venkatesan R,Fogler H R,et al.Formation and aging of incipient thin film wax-oil gels[J].AIChE J,2000,46(5):1059-1073.
[12] Singh P, Fogler H S. Morphological evolution of thick wax deposits during aging[J].AIChE J,2001,47(1):1156-1162.
[13] 王鹏宇,姚海元,宫敬,等.油包水型乳状液蜡沉积冷指实验研究[J].中国海上油气,2014(1):114-118.
