FIELD: gas treatment.
SUBSTANCE: invention provides improved absorbing composition containing aqueous solution of piperazine (1.1 M) and methyldiethanolamine (about 1.5 M to about 6 M) and designed for removal of acid gases such as CO2, H2S and COS. Composition makes it possible to ensure high absorption capacity, equivalent removal of CO2 at lower absorbing composition circulation rates and at higher temperature, and also to improve performance of downstream regenerative equipment.
EFFECT: increased absorption capacity and absorption rate.
11 cl, 1 dwg, 2 tbl, 2 ex
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