Rate enhancement of CO₂ absorption in aqueous potassium carbonate solutions by an ammonia-based catalyst

摘要

The technical field of the invention is CO₂ capture and sequestration, as well as gas separation and purification technologies. In an aspect is a process for capturing purified CO₂ from a CO₂-containing gas, comprising steps: (a) contacting in an absorber column the CO₂-containing gas with an absorption solution comprising water, ammonia, and potassium carbonate, to enable adsorption of CO₂, thereby producing a CO₂-depleted gas and a CO₂-rich solution; and (b) subjecting the CO₂-rich solution to desorption conditions in a regeneration column producing a purified CO₂ gas stream and a CO₂-depleted solution.