Publication Date:
2017-11-09
Description:
Publication date: Available online 7 November 2017 Source: Water Resources and Industry Author(s): Erica Pensini, Roy van Lier, Fabrice Cuoq, Wolfgang Hater, Tobias Halthur The use of recycled process water in steam crackers leads to the accumulation of corrosive impurities, hence the need for adequate treatment. Two corrosion inhibitor formulations containing N-[(9Z)−9-octadecen-1-yl]−1,3-propanediamine ( N -oleyl-1,3-propanediamine) with either cyclohexanamine (CHA) or 2-(diethylamino)ethanol (DEAE) were compared for their performance. Electrochemical impedance spectroscopy and visual observations showed that the two formulations offered comparable protection against corrosion. Bengal Rose testing and experiments conducted using a quartz-crystal microbalance with dissipation monitoring (QCM-D) indicated that the two formulations yielded similar coverage of the metal surfaces, and that the kinetics of mass adsorption were also similar. QCM-D data further suggested that the films formed with the two formulations had similar rigidity, and contact angle measurements indicated that they formed films with comparable hydrophobicity, which were equally effective in isolating the metal surfaces from water. Graphical abstract
Electronic ISSN:
2212-3717
Topics:
Architecture, Civil Engineering, Surveying
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Geography
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Process Engineering, Biotechnology, Nutrition Technology
