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97005 A KINETIC MODEL FOR CALCULATING CONCENTRATION PROFILES AND FLUXES OF CO2-RELATED SPECIES ACROSS THE NERNST DIFFUSION LAYER.

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Product Number: 51300-97005-SG
ISBN: 97005 1997 CP
Author: Jon Kvarekval
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The aggressive behavior of carbonic acid solutions upon various steels has been widely investigated, but is yet not fully understood. In order to achieve more knowledge of the mechanisms of CO2 corrosion, simultaneous diffusion and homogeneouschemical reactions have been simulated close to a corroding iron electrode, using kinetic data for the reactions involving CO2-related species and water. Many CO2 corrosion models predict mass transfer across the stagnant diffusion layer without considering contributions from homogeneous chemical reactions. However, such reactions play a significant role when the equilibria of the CO2/H2O system are disturbed by concentration changes caused by diffusion. Attempts have been made to treat this phenomenon, using equilibrium constants in the routines involving chemical terms. Still, this thermodynamic approach fails to determine the concentration changes caused by chemical reactions, as equilibria will not always be obtained. The recent model simulates the conditions in the stagnant layer close to a dissolving iron surface, on which heterogeneous reduction... Keywords: CO2 corrosion, mass transport, reaction kinetics, modeling.
The aggressive behavior of carbonic acid solutions upon various steels has been widely investigated, but is yet not fully understood. In order to achieve more knowledge of the mechanisms of CO2 corrosion, simultaneous diffusion and homogeneouschemical reactions have been simulated close to a corroding iron electrode, using kinetic data for the reactions involving CO2-related species and water. Many CO2 corrosion models predict mass transfer across the stagnant diffusion layer without considering contributions from homogeneous chemical reactions. However, such reactions play a significant role when the equilibria of the CO2/H2O system are disturbed by concentration changes caused by diffusion. Attempts have been made to treat this phenomenon, using equilibrium constants in the routines involving chemical terms. Still, this thermodynamic approach fails to determine the concentration changes caused by chemical reactions, as equilibria will not always be obtained. The recent model simulates the conditions in the stagnant layer close to a dissolving iron surface, on which heterogeneous reduction... Keywords: CO2 corrosion, mass transport, reaction kinetics, modeling.
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01040 A Mechanistic Model for CO2 Corrosion with Protective Iron Carbonate Films

Product Number: 51300-01040-SG
ISBN: 01040 2001 CP
Author: Srdjan Nesic, Magnus Nordsveen, Rolf Nyborg and Aage Stangeland
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05551 CO2 Corrosion Prediction Model - Basic Principles

Product Number: 51300-05551-SG
ISBN: 05551 2005 CP
Author: Stein Olsen, Statoil ASA; Anne Marie Halvorsen, Norsk Hydro ASA; Per G. Lunde, Norsk Hydro Americas;
Publication Date: 2005
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The NORSOK M-506 is an empirical model based on experiments undertaken in a single phase water flow loop. The data is from experiments with low content of iron ions in the water phase, and the model is thus regarded to give a fair representation of the maximum corrosion rate in a CO2 corrosion controlled system.
Picture for 97002 APPLICATION OF SIMULATION TECHNIQUES
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97002 APPLICATION OF SIMULATION TECHNIQUES FOR INTERNAL CORROSION PREDICTION

Product Number: 51300-97002-SG
ISBN: 97002 1997 CP
Author: Carlos A. Palacios, Yldret Hernandez
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