Influence of hydrate formation and wall shear stress on the corrosion rate of industrial pipeline materials

Poberezhny, L.; Hrytsanchuk, A.; Hrytsuliak, G.; Poberezhna, L.; Kosmii, M.

doi:10.2478/kom-2018-0017

Abstract

In the modern systems of transportation of oil, gas and condensate, in the units of regasification of liquefied natural gas, two-phase flows play an increasingly important role in technological equipment used in the chemical and oil refining industry, power engineering and other industries. All available studies on the formation of gas hydrates were mainly focused on their ability to clog pipes along their entire length. While their ability to cause (initiate) corrosion remains virtually unexplored. Therefore, to increase the efficiency of industrial pipelines it is necessary to study the joint effect of hydration formation and stresses of friction on corrosion of the pipeline. The mathematical model of pipeline corrosion has been further developed by considering the influence of the gas hydrate. The influence of pressure, temperature on the speed of corrosion processes is estimated and it is shown that under the most unfavorable conditions the corrosion rate under the action of gas hydrates can increase several times.

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Influence of hydrate formation and wall shear stress on the corrosion rate of industrial pipeline materials

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