COMPOSITION FOR INHIBITING CORROSION AND SALT FORMATION IN RECYCLED WATER COOLING SYSTEMS Russian patent published in 2024 - IPC C23F11/14 C23F11/16 C02F5/14 

FIELD: chemistry.

SUBSTANCE: invention relates to compositions of chemical agents for inhibiting corrosion and salt deposition in recycling water supply and heat supply systems. Composition contains oxyethylidene diphosphonic acid, an amine component, a corrosion inhibitor and water. Amine component of the composition is diethanolamine borate, and the corrosion inhibitor is bismuthol I. Additionally, the composition contains sodium laureth sulphate, a silicone antifoaming agent "ПС-1" and sodium hydroxide. Component is taken in the following amounts, wt.%: oxyethylidene diphosphonic acid in form of 60% aqueous solution 31.0-33.0; diethanolamine borate 29.5-31.5; bismutol I 2.0-2.2; sodium laureth sulphate 0.5-0.7; silicone antifoaming agent "ПС-1" 1.2-1.4; sodium hydroxide 1.1-1.2; water up to 100.

EFFECT: increased degree of protection of articles made of ferrous and non-ferrous metals from corrosion due to reduction of salt deposition in systems of recycling water supply and heat supply.

1 cl, 1 tbl, 3 ex