Patent ID: 8354086

Claim:
A CO 2 control device for capturing CO 2 in ambient air, said control device comprising: a vertical flow-through apparatus through which the ambient air is designed to flow upwardly; an air driver system which drives the ambient air upwardly through the flow-through apparatus; a member with a large surface area to be treated with an alkaline material, said member being housed within the flow-through apparatus so that the ambient air driven by the air driver system flows through said member and CO 2 from the ambient air flow is absorbed by the alkaline material and turned into CaCO 3 ; and a liquid delivery system which delivers a water based alkaline treatment liquid to said member, said liquid delivery including a droplet producer which directs drops of the treatment liquid downwardly through the flow-through apparatus, onto said member, and downwardly through the ambient air flowing through said flow-through apparatus, so that the treatment liquid reacts with remaining CO 2 in the ambient air flow for absorption of CO 2 from the flue gas, and a reservoir below the droplet producer i) which collects treatment liquid sprayed from the droplet producer, ii) in which the treatment liquid is stored, and iii) from which the treatment liquid, when the treatment liquid becomes saturated with the absorbed CO 2 , is removed for recycling or sequestration of the CO 2 .