Patent ID: 8211394

Claim:
A CO 2 control device for capturing CO 2 in a flue gas from an industrial plant or heating device that burns wood, oil, coal or gas, said control device comprising: a flow-through apparatus through which the flue gas flows; a CO 2 absorbing filter treated with an alkaline material, said filter being housed within the flow-through apparatus so that the flue gas flows through said filter and CO 2 from the flue gas flow is absorbed by said filter and turned into CaCO 3 ; and a spray system which sprays the CO 2 filtered flue gas with a water based alkaline treatment liquid, said spray system including a sprayer which directs the treatment liquid downwardly through the filtered flue gas so that the treatment liquid reacts with remaining CO 2 in the filtered flue gas for further absorption of CO 2 from the flue gas, and a reservoir below the sprayer i) which collects treatment liquid sprayed from the sprayer, 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 .