Influence of Liquid Flow Velocity on CO2 Corrosion: a Semi-Empirical Model

Abstract CO2 corrosion rates of carbon steel obtained from a large number of experiments in a high pressure test loop with various strictly controlled environments and flow conditions were fitted to a semi-empirical model equation. This model combines a contribution of the flow-independent kinetics of the corrosion reaction with one from flow dependent mass transfer of dissolved CO2 by means of a resistance model. The model can be adjusted to reflect the influence of microstructure and composition of the steel.