Aqueous formulation of oil-soluble corrosion inhibitor, and preparation method and regeneration method thereof

Abstract

The present disclosure relates to an aqueous formulation of an oil-soluble corrosion inhibitor, and a preparation method and a regeneration method thereof. The preparation method comprises the following steps: (1) obtaining the temperature T at which the conductivity of the aqueous formulation of the oil-soluble corrosion inhibitor is decreased to no higher than 100 μs/cm; (2) gradually adding water dropwise to a corrosion inhibitor stock solution, which is obtained by mixing the oil-soluble corrosion inhibitor and a solvent oil homogeneously, to produce a reverse micelle liquid A, and then heating up the reverse micelle liquid A to the temperature T and maintaining at this temperature; (3) mixing a non-ionic surfactant, an anionic surfactant and water homogeneously to obtain a mixture solution B, and heating up the mixture solution B to the temperature T and maintaining at this temperature; and (4) mixing the reverse micelle liquid A and the mixture solution B homogeneously, and stirring it at the temperature T for no more than 2 minutes before immediately cooling it, to obtain the aqueous formulation of the oil-soluble corrosion inhibitor. The aqueous formulation of the oil-soluble corrosion inhibitor produced by the method is easy to produce, simple to use and extremely stable.