METHOD OF CLEANING EXHAUST FLUE GASES FROM TOXIC OXIDES Russian patent published in 2007 - IPC B01D53/60 B01D53/62 

FIELD: complex cleaning of various industrial gaseous emissions.

SUBSTANCE: proposed method may used for complete entrapping of toxic gases, such as NO_x, SO₂ and CO from flue gases of fuel burning units and gaseous emissions from production units. Proposed method includes pumping of gas flow to be cleaned through reservoir filled with reaction fluid followed by settling, separation of reaction products in form of sediment and their utilization. Used as reaction fluid is trifluoroacetic acid saturated with oxygen. In the course of cleaning, composition of cleaned gases is monitored continuously. In case of penetration of contaminants, flow of gases being cleaned is directed to second reservoir filled with new portion of trifluoroacetic acid saturated with oxygen. Used trifluoroacetic acid is regenerated by saturating it with oxygen and is directed to re-cycle.

EFFECT: efficiency close to 100%.

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