AQUEOUS COMPOSITION WITH ALKANOLAMINE AND THE METHOD OF REMOVING SULFUR GASES FROM GAS MIXTURES Russian patent published in 2017 - IPC B01D53/14 

FIELD: chemistry.

SUBSTANCE: aqueous solution of alkanolamine is added to remove hydrogen sulfide from the gas mixtures, comprising: (i) an amino compound of the general formula R¹R²NCH₂CH(OH)CH₂OH, where R¹ and R² independently from each other are represented by methyl, ethyl, propyl, or isopropylene groups (ii) an acid with a pKa value equal to 8 or less, or an acid-forming substance capable of forming an acid in the aqueous medium with a pKa of 8 or less, and (iii) optionally, one or more amino compounds, which differ from (i). A method for removing hydrogen sulphide from a gas mixture is also described.

EFFECT: composition is produced for effectively removing hydrogen sulphide from the gas mixtures or removing acid gases at an elevated operating temperature.

9 cl, 1 tbl, 2 dwg, 12 ex