CO RECOVERY APPARATUS, AND CO RECOVERY METHOD Russian patent published in 2018 - IPC B01D53/14 B01D53/62 

FIELD: technological processes.

SUBSTANCE: claimed group of inventions relates to a plant and method for recovering CO₂ from house gases. Apparatus is provided with a CO₂ absorption tower, a CO₂-absorption-solution reclamation tower, a thermometer, a control device. Absorption tower is provided with an upper CO₂ absorption unit obtaining a semi-rich solution as a result of bringing a CO₂-containing exhaust gas into contact with a weak solution so that CO₂, contained in said gas to be treated is absorbed by said weak solution, and a lower CO₂ absorption unit obtaining a rich solution as a result of bringing said semi-rich solution into contact with the CO₂-containing exhaust gas, so that CO₂, contained in said gas to be treated is absorbed by said semi-rich solution. Absorption-solution reclamation tower regenerates the weak solution by heating the rich solution so that CO₂ leaves the rich solution. Thermometer measures the temperature of the rich solution supplied from the CO₂ absorption tower to the CO₂-absorption-solution reclamation tower. Control device controls the temperature of the semi-rich solution supplied to the lower CO₂ absorption unit, on the basis of the temperature of the rich solution measured by the thermometer. Ratio between the filler loading height in the upper CO₂ absorption unit and filler loading height in the lower CO₂ absorption unit is equal to or greater than 1:3 and is equal to or less than 3:1.

EFFECT: high CO₂ absorption rate, reduced consumption of water vapor, saving energy.

6 cl, 5 dwg