Study of an ammonia-based wet scrubbing process in a continuous flow system

► A continuous gas and liquid flow, regenerative scrubbing process for CO2 capture was demonstrated at the bench-scale level using an aqueous ammonia-based solution. ► Ammonia emissions from the absorber and regenerator must be accounted for in the overall process. ► Testing was conducted at near steady-state conditions. ► A spray chamber within the regeneration step proved extremely effective in capturing a significant amount of the ammonia that would typically be vented from the regenerator.