| abstract |
Absorption medium for sour gases, comprising an oligoamine (A) of the general formula (I) and a primary or secondary alkanol amine (B) of the general formula (II), in which the weight ratio of oligoamine (A) to primary or secondary alkanol amine (B) is 0.2 to 4, and a method for removing sour gases from a gas stream by contacting the gas stream at a pressure of 0.05 to 10 MPa abs with an aqueous solution of said absorption medium, said solution being temperature-controlled at a temperature of 20 to 80°C. |