Bench-Scale Testing and Process Performance Projections of CO₂ Capture by CO₂–Binding Organic Liquids (CO₂BOLs) with and without Polarity-Swing-Assisted Regeneration

This manuscript provides a detailed analysis of a continuous-flow, bench-scale study of the CO₂-binding organic liquid (CO₂BOL) solvent platform with and without its polarity-swing-assisted regeneration (PSAR). This study encompassed four months of continuous-flow testing of a candidate CO₂BOL with a thermal regeneration and PSAR regeneration using a decane antisolvent. In both regeneration schemes, steady-state capture of >90% CO₂ was achieved using simulated flue gas at reasonable liquid/gas (L/G) ratios. Aspen Plus modeling was performed to assess process performance, compared to previous equilibrium performance projections. This paper also includes net power projections, and comparisons to DOE’s Case 10 amine baseline, and comments on the viability of the CO₂BOL solvent class for post-combustion CO₂ capture