Entrapment of Water Droplets in Wax Deposits from Water-in-Oil Dispersion and Its Impact on Deposit Build-up
Entrapment of Water Droplets in Wax Deposits from Water-in-Oil Dispersion and Its Impact on Deposit Build-up
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DOI：
10.1021/acs.energyfuels.6b02450
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发表时间：
2017-01
期刊：
影响因子：
5.3
通讯作者：
Sheng Zheng;Thanaphoom Khrutphisit;H. Fogler
中科院分区：
文献类型：
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作者：
Sheng Zheng;Thanaphoom Khrutphisit;H. Fogler
来自油包水乳液/分散体的蜡沉积可将水滴截留在所得石蜡沉积物中。水滴的这种截留可导致沉积物的屈服应力显著降低，这可导致存款在蜡沉积期间脱落。这项调查提出了最全面的表征截留水滴的存款形成与冷指和流动环路蜡沉积实验。实施NMR技术来表征本体和存款的液滴尺寸，以揭示本体的液滴尺寸和存款的水含量之间的关系。此外，它表明，在存款液滴的掺入降低了屈服应力的存款，并导致存款脱落在管道流动。水相对蜡沉积的这种影响的知识超出了基于传热和传质的传统分析，预计将为…
Wax deposition from water-in-oil emulsion/dispersion can entrap water droplets in the resulting paraffin deposits. This entrapment of water droplets can lead to a significant decrease in the yield stress of the deposits, which can cause the deposit to slough-off during wax deposition. This investigation presents the most comprehensive characterization of the entrapment of water droplets by deposit formation with cold finger and flow loop wax deposition experiments. NMR techniques were implemented to characterize the droplet size of the bulk and deposit in order to reveal the relationship between the droplet size of the bulk and the water content of the deposit. Furthermore, it is demonstrated that incorporation of droplets in the deposit lowers the yield stress of the deposit and causes the deposit to slough-off during pipe flow. Knowledge of such effects of the water phase on wax deposition is beyond conventional analysis based on heat and mass transfers and is expected to provide additional insights to ...