METHOD FOR TRAPPING CARBON DIOXIDE FROM FLUE GAS OF POWER PLANT AND DEVICE FOR IMPLEMENTATION THEREOF Russian patent published in 2016 - IPC B01D53/14 

FIELD: chemistry.

SUBSTANCE: method comprises the following steps: 1) using composite water absorber, consisting of organic amine and functionalized ionic liquid, as an absorbent CO₂; 2) forming different layers of the liquid by means of settling to transparency; 3) heating and decomposition of the liquid produced by means of separation and rich in A·CO₂ and B·CO₂, for recycling, to obtain highly concentrated gas CO₂ and composite water absorbent; 4) recycling composite water absorbent obtained at step 3); 5) cooling the highly concentrated gas CO₂ for condensation of hot water vapor in it; 6) gas-liquid separation of highly concentrated gas CO₂, after cooling at step 5), to produce gas CO₂ with purity ≥ 99 %; 7) conversion of high-purity gas CO₂ in liquid to obtain a product of highly concentrated liquid carbon dioxide industrial type.

EFFECT: method provides higher efficiency of trapping, lower power consumption and simple implementation.

14 cl, 1 dwg