METHOD OF ISOLATING CARBON DIOXIDE FROM SMOKE GASES AND RESPECTIVE DEVICE Russian patent published in 2013 - IPC B01D53/86 

FIELD: chemistry.

SUBSTANCE: invention relates to method of isolating carbon dioxide (CO₂) from smoke gases. Method includes stage of passing CO₂-containing outflowing gas through catalyst, on whose active centres NH₃ is bound. After that, at first temperature of process (T₁), CO₂, as a result of chemical reaction with NH₃, is transferred into stable state, also bound on catalyst surface. Then, flow of blowdown gas, consisting of CO₂ and water vapour, is directed at CO₂-filled catalyst; at second temperature of process, which is higher than first temperature of process (T₂>T₁). CO₂ and NH₃ composition is decomposed, CO₂ passes into flow of blowdown gas, and NH₃ remains precipitated on catalyst surface. After that, CO₂-enriched flow of blowing gas is transferred into another reactor and cooled there till the temperature which is lower than first temperature of process (T₃<T₁).Clean dry CO₂ is pumped out through water surface and directed for further application. As adsorbent TiO₂ or mixture of TiO₂ and alloy V₂O₅ is used. In respective device for method realisation there are at least twp reactors, which can alternately switch to work in mode of CO₂-absorption, on the one side and in mode of absorbent regeneration, on the other side.

EFFECT: obtaining carbon dioxide in pure form for further application or utilisation.

28 cl, 5 dwg