FIELD: process engineering.
SUBSTANCE: invention can be used in chemical and oil industries for cleaning gases of acid impurities. Gases to be cleaned are forces at increased pressure of 0.2-7 MPa, successively, to absorber 3 for treatment processing by water solution of normal salts of hydrosulphuric acid and metacarbonic acid with concentration of 0.1 to 0.5 % by weight and, then to absorber 8 for treatment by 10±5%-solution of sodium hydroxide. Waste absorbent from absorber 8 diluted by water from collector 6 to concentration of 0.1-0.5% by weight is used as first absorbent. Waste absorbent solution from collector 4 is directed burial in deep isolated aquifer bed.
EFFECT: higher degree of gas cleaning, reduced absorbent consumption, reduced operating costs.
4 cl, 1 dwg, 1 tbl
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