METHOD OF PRODUCING HYDROGEN SULPHIDE AND CARBON DIOXIDE CORROSION INHIBITOR IN MINERALISED AQUEOUS MEDIA Russian patent published in 2016 - IPC C23F11/167 

FIELD: metallurgy.

SUBSTANCE: invention relates to protection of metals from corrosion in highly mineralized mediums containing hydrogen sulphide and carbon dioxide using inhibitors, and can be used in production, preparation, transportation and processing of oil. Method (versions) involves reaction of oxyethylated alcohol or oxyethylated monoalkylphenol with phosphorus pentoxide or phosphorus oxychloride while heating and subsequent reaction of obtained product with amine reagent, wherein while using phosphorus pentoxide oxyethylated alcohol or oxyethylated monoalkylphenol and phosphorus pentoxide is taken in molar ratio of 1:0.5 respectively, while using phosphorus oxychloride water and oxyethylated alcohol are added or oxyethylated monoalkylphenol. Phosphorus oxychloride and water are taken in molar ratio of 1:1:2 respectively and molar ratio of the obtained product and amine reagent is 1:(0.5-2) respectively. In versions of method of obtaining inhibitor quaternary ammonium salta are further added in amount of 1.0-10.0 WT% and inhibitor is dissolved in aliphatic alcohol and mixture of aliphatic alcohol with water or mixture of aliphatic alcohol with aromatic hydrocarbon to concentration of 20.0-70.0%.

EFFECT: increasing in corrosion inhibitor efficiency and wider base of inhibitors raw materials.

12 cl, 2 tbl, 25 ex