REMOVAL OF CARBON DIOXIDE FROM AIR Russian patent published in 2011 - IPC B01D53/18 

FIELD: process engineering.

SUBSTANCE: invention may be used in air treatment. Device to remove trace CO₂ from atmospheric air comprises one or several elements made from foamed material with exposed or screened pores. Foamed material has open CO₂ passages coated with solid sorbent. Multiple elements of foamed material may be arranged spaced apart to make open CO₂ passages coated with solid absorbent. Method of increasing contact between trace CO₂ in atmospheric air low and solid sorbent comprises producing surfaces coated by solid sorbent in foamed material with open and/or screened pores and forcing gas flow along lower-drag paths crossing foamed material. Note here that foamed material is filled, mainly, with air. At least some air volumes inside said pores are interconnected and connected with gas flow in channels passing through foamed material.

EFFECT: better contact between sorbent and air flow.

8 cl, 17 dwg