Removal of deposits and inhibition of corrosion on heat-exchange surfaces of power plants

摘要

In a method of removing deposits on heat transfer surfaces energy plants and the inhibition of corrosion of these devices, which use aqueous medium, usually with the pH adjusted to alkaline, the water medium in the continuous cleaning added the organophosphonic acid in an amount of 2 to 5 mg per 1 liter of circulatory and / or coolant to prevent the exclusion of deposits carbonate nature in the heat transfer surfaces or by its reaction with calcium and magnesium ions and optionally also cleans and substances chelating nature selected from the group comprising nitrilotriacetic acid (NTA), ethylenediaminetetraacetic acid (EDTA) acid, hydroxiethylendiamintrioctovu (HEDTA), diethylenetriaminepentaacetic acid (DTPA), ethylenediamine tetra, or salts thereof, in an amount of 5 to 10 mg per 1 liter of the circulating medium and / or coolant, and polyacrylamides in an amount of 0.5 to 10 mg per 1 liter coolant. Furthermore, it is preferable to add 10% octadecylamine emulsion anion or zinc, in particular in a steam generator of nuclear, hydrogen peroxide.