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07555 Top of Line Corrosion and Water Condensation Rates in Wet Gas Pipelines

Picture for 07555 Top of Line Corrosion and Water Condensation Rates in Wet Gas Pipelines
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Product Number: 51300-07555-SG
ISBN: 07555 2007 CP
Author: Rolf Nyborg and Arne Dugstad
Publication Date: 2007
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Condensation of water in wet gas pipelines can cause top of line corrosion when the water condensation rate is high or acetic acid is present in the gas. For CO2 dominated systems the top of line corrosion is limited by the amount of iron which can be dissolved in the water condensing in the top of the pipeline. When acetic acid is present in the gas in addition to CO2 the solubility of iron in the condensed water is increased, and this increases the top of line corrosion. Fluid flow model simulations have shown that different approaches for pipeline insulation can give widely different water condensation rates. Application of a top of line corrosion prediction model has demonstrated that such variations in water condensation rates can have a much larger effect on the top of line corrosion rate than variation in the CO2 partial pressure.
Condensation of water in wet gas pipelines can cause top of line corrosion when the water condensation rate is high or acetic acid is present in the gas. For CO2 dominated systems the top of line corrosion is limited by the amount of iron which can be dissolved in the water condensing in the top of the pipeline. When acetic acid is present in the gas in addition to CO2 the solubility of iron in the condensed water is increased, and this increases the top of line corrosion. Fluid flow model simulations have shown that different approaches for pipeline insulation can give widely different water condensation rates. Application of a top of line corrosion prediction model has demonstrated that such variations in water condensation rates can have a much larger effect on the top of line corrosion rate than variation in the CO2 partial pressure.
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