Abstract: A process of removing CO2 includes: contacting, in a first absorber stage, a CO2-containing gas stream with a solution mixture to generate a partially cleaned gas stream; contacting, in a second absorber stage, the partially cleaned gas stream with a CO2-lean solution to generate a further cleaned gas stream that contains ammonia and a CO2-partially-enriched solution; dividing the CO2-partially-enriched solution into a first portion and a second portion; removing the first portion of the CO2-partially-enriched solution from the second absorber stage; chilling the removed CO2-partially-enriched solution; contacting, in the third absorber stage, the chilled CO2-partially-enriched solution with the further cleaned gas stream that contains ammonia to generate a treated gas stream and a CO2-partially-enriched-solution containing recovered ammonia; and combining the solution containing the recovered ammonia removed from the third absorber stage with the second portion of the CO2-partially-enriched solution, forming

Abstract: The carbon dioxide recovery and conditioning system for an ammonia-based carbon dioxide capture process, wherein the system comprises a regenerator column, and a regenerator cooling system adapted to cool a gaseous flow comprising carbon dioxide, ammonia and moisture, which collects at the top of the regenerator column. A carbon dioxide chilling and drying arrangement is fluidly coupled to the regenerator cooling system and to a carbon dioxide recovery line. The system effectively removes moisture and ammonia upstream of the dryer. Disclosed herein is also a method for carbon dioxide recovery and conditioning.

Abstract: The method comprises a flue gas desulfurizing step using an ammonia-based desulfurizing scrubber to remove sulfur oxides from the flue gas A further step comprises processing the desulfurized flue gas through an ammonia-utilizing carbon dioxide capture unit, to remove carbon dioxide therefrom. The desulfurizing step comprises recycling desulfurized flue gas as an oxidant towards the desulfurizing scrubber. Also disclosed herein is a system for flue gas desulfurization and carbon dioxide removal.

Abstract: A process of removing CO2 includes: contacting, in a first absorber stage, a CO2-containing gas stream with a solution mixture to generate a partially cleaned gas stream; contacting, in a second absorber stage, the partially cleaned gas stream with a CO2-lean solution to generate a further cleaned gas stream that contains ammonia and a CO2-partially-enriched solution; dividing the CO2-partially-enriched solution into a first portion and a second portion; removing the first portion of the CO2-partially-enriched solution from the second absorber stage; chilling the removed CO2-partially-enriched solution; contacting, in the third absorber stage, the chilled CO2-partially-enriched solution with the further cleaned gas stream that contains ammonia to generate a treated gas stream and a CO2-partially-enriched-solution containing recovered ammonia; and combining the solution containing the recovered ammonia removed from the third absorber stage with the second portion of the CO2-partially-enriched solution, forming