| abstract |
The invention relates to an absorption agent for the selective removal of hydrogen sulfide from a fluid flow containing carbon dioxide and hydrogen sulphide, containing a) 10% to 70% by weight at least one sterically hindered secondary amine having at least one ether group and / or at least one hydroxyl group in the molecule; b) at least one non-aqueous solvent having at least two functional groups, selected from ether groups and hydroxyl groups, in the molecule, and c) a cosolvent when appropriate; where the hydroxyl group density of the absorption agent? Abs is in the range of 8.5 to 35 mol (OH) / kg. In addition, a method of selectively removing hydrogen sulfide from a fluid flow containing carbon dioxide and hydrogen sulfide is described, wherein said fluid flow comes into contact with the absorbing agent. The absorption agent is characterized by a good regeneration capacity and a high capacity of cyclic acid gas. |