FIELD: gas treatment. SUBSTANCE: hydrogen sulfide if neutralized by mixing gas with liquid absorption solution containing ferric compounds as oxidant, which is followed by air-regeneration of exhausted solution. Ferric compound is both in dissolved and finely divided state in presence of bischofite-based catalyst containing alkali metal bichromate. Installation includes absorber, regenerator, and separators. Absorber and regenerator contain jet ejector with disperser and, successively connected to them, coil- type reactor. Purification degree is 98% in operation under environmental conditions with neither heating nor cooling. EFFECT: increased purification efficiency. 3 cl, 1 dwg
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