METHOD TO REDUCE CO CONCENTRATION IN FLUID AND DEVICE TO THIS END Russian patent published in 2012 - IPC B01D53/62 C01B31/24 

FIELD: process engineering.

SUBSTANCE: set of invention relates to reduction of CO₂ concentration of fluid flow. Proposed method comprises introducing first gas not containing CO₂, or including its trace amounts, by first conveyor and introducing second gas containing CO₂ in concentration exceeding, at least, of air-water equilibrium, in fluid flow by second container. On adding solution containing salt into reaction chamber and introducing first and second gases therein, solid carbonate is formed and release of unreacted gas containing CO₂ in reduced concentration. Method is realised at room temperatures. First gas is air. Second gas is atmospheric air contaminated due to man activities or natural processes. In compliance with second version, method consists in adding CO₂ flow to fluid including salt to form carbonic acid with base at mix pH equal to 9-12. On adding solution containing salt into reaction chamber, introducing base into reaction chamber via first container and introducing fluid sample via second container, solid carbonate is formed and unreacted gas is released.

EFFECT: reduced CO₂ concentration.

62 cl, 39 ex, 4 dwg