Effect of Pre-Wetting on Pipeline Wettability

doi:10.11885/j.issn.1674-5086.2015.06.10.01

Abstract

Abstract: In view of the problem of oil pipeline inner wall corrosion, by the measurement of the contact angle of acrylic and steel surface, we carried out to study the effect of inorganic salt icon, solid surface roughness and pre-wetting history on oil-water-solid system. The results indicate that the carbon steel mainly appears hydrophilic, while the acrylic mainly appears hydrophobic. On the surface of both materials, the pre-wetting phase always inclines to prevent the solid surface wetted by another phase, and the increasing icon concentration enhances the hydrophilic of the solid surface. Both of the phenomena are more obvious on the carbon steel surface. What is more, pipeline material affects not only the final contact angle, but also the wetting process, which shows that wetting requires much longer time to reach balance on the carbon steel than on the acrylic surface, which may exert an effect on the distribution of corrosion in the pipeline.

Key words: wettability, pre-wetting, surface material, icon concentration, contact angle

CLC Number:

TE832

XU Daozhen, ZHANG Jinjun, WANG Bin, ZHANG Guozhong. Effect of Pre-Wetting on Pipeline Wettability[J]. 西南石油大学学报(自然科学版), 2016, 38(6): 147-151.

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URL: http://journal15.magtechjournal.com/Jwk_xnzk/EN/10.11885/j.issn.1674-5086.2015.06.10.01

http://journal15.magtechjournal.com/Jwk_xnzk/EN/Y2016/V38/I6/147

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