FIELD: gas cleaning. SUBSTANCE: method for cleaning gas from acid components includes gas contacting with solution of alkanol amines in the presence of polysulfides. To reduce corrosivity of the process and power consumption, supplied for contacting are polysulfides preliminarily treated with sodium hydroxide at mass ratio of 60:1-6:1 and concentration of polysulfides is maintained equal to 0.05-0.6 g/l in terms of sulfur. EFFECT: higher efficiency. 2 tbl
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