Combined Physical Property and Corrosion Assessment of Advanced Solvents for CO2 Capture Systems

Detailed knowledge and understanding of a solvent’s degradation and corrosion behavior under the effect of flue gaspollutants absorbing in solution is invaluable before moving to upscaling. In this work we are researching the effectof long-term exposure at elevated temperature and oxidative conditions, to identify and quantify the effect ofdegradation on the physical properties and corrosion behavior of four solvents, including monoethanolamine (MEA),diethanolamine (DEA), the phase-change solvent (PCS) S1N (N1-Cyclohexylpropane-1,3-diamine) / DMCA (N,N –Dimethlcyclohexylamine) [1], and the commercial APBS-CDRMax® solvent, developed by Carbon Clean. We coverpure, contaminated (with sulfur and nitrogen dioxides), CO2-loaded and unloaded forms. We then investigate thevariation of physical properties of the liquid samples over time and evaluate their corrosion behavior withelectrochemical techniques.