FIELD: technological processes.
SUBSTANCE: invention can be applied in chemical and petrochemical industry. Gas mixture containing acid mixtures contacts in absorption tower with absorbing solution at the temperature from 40 to 100°C. Absorbing solution contains 20 - 60 wt %, alkanolamine, 10 - 40 wt %, thioalkanol C2-C4 and 20 - 60 wt % of water. Alkanolamine may be represented by diethanolamine, thioalkanol may be represented by thiodiethylene glycol or ethylene-dithioethanol.
EFFECT: improved efficiency of absorption of mercaptans and acid gases, reduced consumption of absorbent and expenses.
22 cl, 5 dwg, 5 ex
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