Regenerable sorbent technique for capturing CO₂ using immobilized amine sorbents

摘要

The disclosure provides a CO₂ absorption method using an amine-based solid sorbent for the removal of carbon dioxide from a gas stream. The method disclosed mitigates the impact of water loading on regeneration by utilizing a conditioner following the steam regeneration process, providing for a water loading on the amine-based solid sorbent following CO₂ absorption substantially equivalent to the moisture loading of the regeneration process. This assists in optimizing the CO₂ removal capacity of the amine-based solid sorbent for a given absorption and regeneration reactor size. Management of the water loading in this manner allows regeneration reactor operation with significant mitigation of energy losses incurred by the necessary desorption of adsorbed water.