Mixed amines, removal equipment and removal methods

Abstract

The invention relates to a mixed amine absorbent, a removal device, and a removal method with a rapid reaction rate and efficient removal of absorbed CO2 and H2S. Mixed amine absorbents are designed to absorb at least one of the CO2 and H2S compounds in the gas; these mixed amine absorbents include: straight-chain monoamines (a); diamines (b); The cyclic compound (c) is represented by the following chemical formula: where R': any one of the hydrogens, the hydrocarbon group with 1 to 4 carbon atoms, and the hydroxyalkyl group, R2: oxygen or N-R3, and R3: any one of the hydrogens, the hydrocarbon group with 1 to 4 carbon atoms, and the hydroxyalkyl group; and water (d).