Modeling the Chemistry of Carbon Dioxide - Rich Phases with Impurities

Dense Phase CO2 Corrosion: Modeling the Chemistry of CO₂ – Rich Phases with Impurities

• Objectives:

  - Model the solubility of S^o in CO₂ - rich phases in order to predict whether solid S^o can drop out in transmission lines

  - Predict whether S^o can undergo reactions in the presence of water

• Chemical subsystems to be modeled

  - Pure S^o

  Volatility of pure S^o provides a baseline for its solubility in gas phase

  - S^o – H₂O

  Solubility of S^o in H₂O is important if an aqueous phase forms

  Model development requires considering the S0 – H2O system because the reference state for liquid-phase species is infinite dilution in water

• S^o – CO₂

  Solubility of S^o in CO₂