METHOD OF CLEANING METAL SURFACES OF EQUIPMENT AND DEVICE FOR REALIZATION OF THIS METHOD

FIELD: cleaning metal surfaces from highly toxic agents, from unsymmetrical dimethylhydrazine in particular. SUBSTANCE: proposed method consists in removal of residue of dimethylhydrazine in water bringing concentration of solution to 0.05-0.1 mass-%; then solution thus obtained is treated with ozon...

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Hauptverfasser:	SHARAPOV V.S, BAZLOV N.V, GUDKOV V.L, BURJAK A.K, UL'JANOV A.V, TARASOV A.L, BIRJUKOV G.P, IGNAT'EV I.JU
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY CLEANING CLEANING IN GENERAL CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY PERFORMING OPERATIONS PREVENTION OF FOULING IN GENERAL TRANSPORTING
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Beschreibung
Zusammenfassung:	FIELD: cleaning metal surfaces from highly toxic agents, from unsymmetrical dimethylhydrazine in particular. SUBSTANCE: proposed method consists in removal of residue of dimethylhydrazine in water bringing concentration of solution to 0.05-0.1 mass-%; then solution thus obtained is treated with ozone for 7-13 hours and water is additionally saturated with ozone to concentration of 3.3-3.4 mg/l; treatment of surface is effected at rate of 0.5-1.0 cu m/h for 2.5-3 hours. Device proposed for realization of this method has reservoir 1, liquid mixing units 13 and 25, catalytic apparatus 21 and ozonizer 8. Catalytic apparatus 21 is connected with gas cavity 2 of reservoir 1 and with atmosphere and ozonizer 8 is connected with liquid cavity 3 of reservoir 1 by means of pipe line 11. EFFECT: enhanced efficiency of cleaning including neutralization of highly toxic agents at enhanced ecological safety. 6 cl, 5 dwg, 2 tbl _