| abstract |
Disclosed herein is a method and system for separating carbon dioxide (CO 2 ) from a C02 containing gas stream containing water vapor and additional impurities, for example, nitrogen, oxygen, sulfur oxides, nitrogen oxides, and mercury. The C02 is captured by subjecting the CO 2 gas feed stream to a temperature swing adsorption step. The temperature swing adsorption step comprises an adsorption step for producing a substantially dry carbon dioxide-depleted stream, and an adsorbent regeneration step comprising heating the adsorbent bed to produce a substantially water vapor-free carbon dioxide stream. Moisture from the gas stream containing CO 2 is optionally removed by pressure swing adsorption, temperature swing adsorption, membrane separation, or absorption prior to CO 2 capture. |