A carbon capture system can include a plurality of CO.sub.2 thermal swing adsorption (TSA) beds. The plurality of CO.sub.2 TSA beds can include at least a first TSA bed, a second TSA bed, and a third TSA bed configured to capture CO.sub.2 within a capture temperature range and to regenerate the captured CO.sub.2 at a regeneration temperature range above the capture temperature range. The carbon capture system can include a plurality of valves and associated flow paths configured to allow switching operational modes of each of the first, second, and third TSA beds.

An acid gas adsorption device includes: an acid gas adsorption part and one case. The acid gas adsorption part includes an acid gas adsorption material capable of adsorbing an acid gas. The acid gas adsorption part includes: a first adsorption portion; and a second adsorption portion arranged on a downstream side of the first adsorption portion in a direction of passage of a fluid. The first adsorption portion includes a first acid gas adsorption material having a relatively small adsorption force for adsorbing the acid gas and a relatively large adsorption capacity for the acid gas. The second adsorption portion includes a second acid gas adsorption material having a relatively large adsorption force for adsorbing the acid gas and a relatively small adsorption capacity for the acid gas. The one case houses the first adsorption portion and the second adsorption portion together.

A carbon capture system can include a plurality of CO.sub.2 thermal swing adsorption (TSA) beds. The plurality of CO.sub.2 TSA beds can include at least a first TSA bed, a second TSA bed, and a third TSA bed configured to capture CO.sub.2 within a capture temperature range and to regenerate the captured CO.sub.2 at a regeneration temperature range above the capture temperature range. The carbon capture system can include a plurality of valves and associated flow paths configured to allow switching operational modes of each of the first, second, and third TSA beds.