SYSTEM FOR SEPARATION OF CARBON DIOXIDE AND METHOD OF ITS SEPARATION Russian patent published in 2012 - IPC B01D53/14 

FIELD: process engineering.

SUBSTANCE: invention relates to extraction of carbon dioxide. Proposed system comprises absorber and regenerator. Absorber comprises CO₂ absorption section and, at least, one water flushing section. Said absorption section allows flue gas to be exposed to adsorbent based on main amino compound to absorb carbon dioxide in flue gas. At least, one water flushing section allows decarbonated flue gas with reduced amount of carbon dioxide to get in contact with flushing water to decrease amount of said amino compounds caught by decarbonated flue gas. Regenerator release absorbed carbon dioxide from main amino compound-based absorbent. Proposed system additionally comprises adsorbent treatment section arranged downstream of, at least, one water flushing section through which decarbonated flue gas flows. Absorbent treatment section allows decarbonated flue gas to get in contact with circulating acid water to decrease additionally the amount of main amino compounds caught by decarbonated flue gas.

EFFECT: additional decrease in concentration of main amino compound.

22 cl, 6 dwg