CO ABSORPTION FROM GAS MIXTURES WITH 4-AMINO-2,2,6,6-TETRAMETHYLPIPERIDINE WATER SOLUTION Russian patent published in 2014 - IPC B01D53/24 B01D53/14 B01D53/62 

FIELD: chemistry.

SUBSTANCE: invention can be used for the absorption of carbon dioxide from a gas mixture which contains it, first of all from gaseous combustion products, from effluent gases of biological processes, calcination processes, incineration processes, etc. The method of CO₂ absorption from a gaseous mixture by its introduction in contact with an absorbent, which contains water, sulpholane and at least one amine of formula , where R¹ and R² independently on each other represent oxygen or alkyl residue. A device for CO₂ separation from the gaseous mixture has an absorber, a desorber and a circuit of circulation of the absorbent claimed in the invention.

EFFECT: invention makes it possible to carry out desorption at a higher temperature and/or decreased pressure without loss of solvents, increase a degree of carbon dioxide desorption, as well as reduce the quantity of applied corrosion inhibitors.

13 cl, 3 tbl, 3 ex