Water wetting is a crucial issue in carbon dioxide (CO2) corrosion of multiphase flow pipelines made from mild steel. This study demonstrates the use of a novel benchtop apparatus, a horizontal rotating cylinder, to study the effect of water wetting on CO2 corrosion of mild steel in two-phase flow. The setup is similar to a standard rotating cylinder except for its horizontal orientation and the presence of two phases - typically water and oil. The apparatus has been tested by using mass-transfer measurements and CO2 corrosion measurements in single-phase water flow. CO2 corrosion measurements were subsequently performed using a water/hexane mixture with water cuts varying between 5% and 50%. While the metal surface was primarily hydrophilic under stagnant conditions, a variety of dynamic water wetting situations was encountered as the water cut and fluid velocity were altered. Threshold velocities were identified at various water cuts when the surface became oil-wet and corrosion stopped.


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    Title :

    Horizontal rotating cylinder - a compact apparatus for studying the effect of water wetting on carbon dioxide corrosion of mild steel


    Additional title:

    Horizontal rotierender Zylinder - Eine kompakte Vorrichtung zur Untersuchung des Einflusses von Wasserbenetzung auf die Kohlendioxidkorrosion von unlegiertem Stahl


    Contributors:
    Nesic, S. (author) / Carroll, F. (author)

    Published in:

    Corrosion, Houston ; 59 , 12 ; 1085-1095


    Publication date :

    2003


    Size :

    11 Seiten, 8 Bilder, 16 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English






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