Carbon Dioxide Capturing in Temperature/Pressure Swing-Commercial Processes Using Ionic Liquids

Abstract

Capturing carbon dioxide is vital for mitigating global warming and supporting chemical processes. Ionic liquids (ILs) have emerged as promising solvents for CO₂ capture. Using ASPEN simulation software, this study explores three specific ILs: [emim][triflate], [bmim][MeSO₃], and [bmim][NTf₂]. Their selection is based on exploitable differences in energy. The study models CO₂ solubility and validates it against published data. It also considers the decomposition of ILs using a more accurate vapor loss model. Simulated equations predict CO₂ and IL behavior more accurately than published ASPEN studies, optimizing the process for minimal energy consumption. Commercial considerations and rigorous engineering calculations guide the analysis, encompassing energy and economic factors.