FIELD: petroleum processing. SUBSTANCE: hydrogen sulfide and low-molecular mercaptans contained in crude oil and gas condensate are oxidized by air oxygen into elementary sulfur and disulfides in presence of water-alkali solution of phthalocyanine catalyst at 25-65 C and 0.5-3.0 MPa pressure for 5 to 180 min. To raw material stream added are: 25-45% aqueous alkali solution containing 0.1-0.8 mole of sodium hydroxide per 1 mole of is hydrogen sulfide and mercaptan sulfur and 0.15- 0.25% solution of phthalocyanine catalyst containing catalyst in amount 0.01-0.1 g/mole. Cobalt compounds of disulfo-, tetrasulfo-, and dichlorodihydrpxydisulfate- octacarboxytetraphenyl and polyphthalocyanine are used as catalyst. Catalyst solution is prepared by dissolving phthalocyanine in preliminarily deoxidized water or 0.5-1.5% aqueous alkali solution by flushing water or alkali solution with inert gas. A portion of reaction mixture containing purified material, exhausted air and water-alkali solution of catalyst is combined with starting material at ratio (0.05- 200):1 at pressure 0.2-0.5 MPa. Installation contains raw material tank and pump, tanks for preparing and storing alkali and catalyst solutions, corresponding pumps, air-supply apparatus, apparatus to mix air with raw material, preheater, hydrogen sulfide and mercaptan-oxidation reactor, settler for collecting reaction mixture, and tank-separator to separate this mixture. Tank for preparing catalyst solution is provided with bubbler to blow through solution with inert gas. Discharge lines of alkali and catalyst solution-supply pumps are connected with suction line of raw material-supply pump, and tank-settler is connected over pipeline and flow regulator to raw material tank. Air-raw material mixing apparatus is installed after raw material-supply pump, and preheater between this apparatus and reactor. To mix air with raw material, pressure injector is used or apparatus constructed in the form of tore with holes oriented against raw material stream at angle 20-30 deg. EFFECT: enabled purification of all types of crude oils and gas condensates. 10 cl, 3 dwg, 3 tbl
