APPARATUS AND METHOD OF EXTRACTING CO Russian patent published in 2011 - IPC B01D53/62 

FIELD: chemistry.

SUBSTANCE: apparatus has an absorber which brings flue gases containing CO₂ into contact with a CO₂ absorbing gas in order to reduce content of CO₂ gas in flue gases, a regenerator 15 which reduces content of CO₂ in the saturated solvent such that the regenerated solvent with low content of CO₂ is reused in the absorber, at least two compressors 29-1, 29-2, 29-3, 29-4 which compress CO₂-containing gas from the regenerator 15 and apparatus 41 for reducing content of oxygen in the CO₂-containing gas. The apparatus 41 for reducing content of oxygen is placed between a first separator 31-1 which is placed downstream from the first compressor 29-1, and a second separator 31-2 which is placed downstream from the second compressor 29-2. The apparatus for reducing content of oxygen has a combustion catalyst 47 which facilitates reduction of O₂ content in the CO₂-containing gas. The apparatus 41 for reducing content of oxygen has a device 49 for feeding hydrogen-containing gas.

EFFECT: efficient removal of CO₂ from flue gases, low concentration of oxygen contained in CO₂ which is extracted in the regenerator, which reduces clogging up of equipment or pipes or colouring of chemical products.

10 cl, 7 dwg