FIELD: process engineering.
SUBSTANCE: invention relates to extraction of carbon dioxide from gas flows by absorption. Proposed absorbing solution comprises active compound making 5-50% of total weight of absorbing solution. Said active compound contains bi- or tri-peptides or their salts, and amino acids, or their salts. Additionally, said solution contains alkanolamines, oligoamines, or piperazines.
EFFECT: higher absorption capacity, decreasing corrosion activity.
12 cl, 3 tbl
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