FIELD: chemistry.
SUBSTANCE: invention can be used in oil dehydration during pipeline demulsification on oil collection facilities, oil treatment plants, oil refineries, and in oil deep dehydration and desalination processes. The invention relates to a composition for dehydrating and desalinating water-oil emulsions, containing a nonionic surfactant 35-49 wt %, an ionic surfactant which contains a quaternary nitrogen atom selected from: oleyl amidopropyl betaine, cocamidopropyl betaine, alkylbetaine, cetyltrimethylammonium chloride, oleyl amidopropyl trimethylammonium chloride, oleyl amidopropyl dimethylamino oxide 1-15 wt % and solvent - the balance.
EFFECT: wider range of surfactant compositions for effective dehydration and desalination of water-oil emulsions, protection of the system for collecting, transporting and treating oil from corrosion.
2 cl, 5 tbl, 43 ex
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