Evaluation of the influence of various factors on the corrosion of steels during moisture condensation under the conditions of transportation of a corrosive gas
https://doi.org/10.31615/j.corros.prot.2022.105.3-2
Abstract
The problem of internal corrosion is an urgent problem in the transportation of produced products with the presence of corrosive-aggressive components through gas pipelines. The presence of CO2 or H2S in the produced gas in combination with the presence of condensation water, as well as a number of other factors, stimulates the intensive development of carbon dioxide or hydrogen sulfide corrosion of a local nature. To determine the limiting rates of local corrosion, corrosion tests were performed under conditions of moisture condensation, which occurs when a temperature gradient occurs and the transported gas is rapidly cooled. A study was carried out to assess the influence of the main operational factors on corrosion processes during moisture condensation on the inner surface of the gas pipeline: humidity, temperature, type of steel, the presence of a weld and the presence of alcohol, monoethylene glycol and acidic environments. It has been established that many of the above corrosion parameters accelerate local corrosion of carbon and low alloy steels, the development rate of which reaches up to several mm/year. It has been determined that the rate of development of corrosion processes during the condensation of water-glycol and water-alcohol solutions depends on the amount and composition of the liquid condensing on the metal surface. High-alloy steel 12X18H10T (with 18% Cr) showed resistance to corrosion conditions during moisture con densation
About the Authors
K. A. Ibatullin
LLC Gazprom VNIIGAZ
Russian Federation
Russian Federation
Konstantin A. Ibatullin, Ph.D. in Chemistry, Leading
Researcher
15, Proyektiruyemy proyezd №5537, bld. 1, Razvilka, Leninsky municip., Moscow region
R. K. Vagapov
LLC Gazprom VNIIGAZ
Russian Federation
Russian Federation
Ruslan K. Vagapov, Ph.D. in Chemistry, Head of Laboratory
15, Proyektiruyemy proyezd №5537, bld. 1, Razvilka, Leninsky municip., Moscow region
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Review
For citations:
Ibatullin K.A., Vagapov R.K. Evaluation of the influence of various factors on the corrosion of steels during moisture condensation under the conditions of transportation of a corrosive gas. Theory and Practice of Corrosion Protection. 2022;27(3):31-46. (In Russ.) https://doi.org/10.31615/j.corros.prot.2022.105.3-2
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