System and Method for Carbon Dioxide Capture and Sequestration

A system for removing carbon dioxide from carbon dioxide laden air, the system comprising:

• a carbon dioxide capture structure comprising a contactor with a surface area along which a sorbent is distributed that is capable of reversibly adsorbing, or binding, to carbon dioxide, an air conduit, open at one end to the atmosphere and at a second end to the capture structure, for bringing a flow of carbon dioxide-laden ambient air to and through the carbon dioxide capture structure at a first location, a sealable regeneration chamber capable of containing the capture structure at a second location;
• carriage means for moving the capture structure between the first and the second locations;
• a source of process heat steam for providing steam at a temperature of not greater than 120° C.;
• a hot fluid conduit connected to the source of process heat steam and to the sealable regeneration chamber for directing such process heat steam at the carbon dioxide-loaded sorbent on the capture structure in the regeneration chamber to strip carbon dioxide from the sorbent;
• and
• a fluid conduit for carrying the separated carbon dioxide away from the regeneration chamber, wherein said contactor comprises a relatively thin substantially flexible sheet material whose surface is covered with said sorbent, and wherein said carriage means is a series of rollers around which said flexible sheet is supported which enable movement thereof between adsorption and regeneration stages, and a pair of sealing surfaces between which the flexible sheet must pass located between the location where the flexible sheet is exposed to the atmosphere and the interior of the regeneration chamber.