METHOD FOR INCREASING THE RELIABILITY AND COST EFFICIENCY OF OPERATION OF SUPERCRITICAL PRESSURE POWER GENERATION UNITS OPERATING IN OXYGENATED WATER CONDITIONS

摘要

FIELD: heat power engineering.;SUBSTANCE: invention relates to the field of heat power engineering and can be used on supercritical pressure power generation units to enhance the protective and adhesive properties of oxide films of the water vapour circuit. The method includes the following stages: 1 to 2 times a year, before the booster pump of the power generation unit, periodic dosing of an aqueous micelle-molecular solution of stearylamine is conducted for 5 to 10 days in an amount providing a concentration of stearylamine in the feed water before the boiler of 1.5 to 2.0 mg/dm3, wherein at the same time the regular input of gaseous oxygen is terminated for the period of dosing, wherein the operation of the unit is executed in a regular mode under load at rated parameters.;EFFECT: establishment of an optimal mode of periodic treatment of the water vapour circuit of SCP power generation units with an aqueous micelle-molecular solution of stearylamine, ensuring formation of a stable protective metal surface practically not "scared" of corrosion, preventing formation of scaling and preserving the acquired properties thereof for up to 12 months on working equipment and up to 3 years on stopped equipment, which leads to an increase in the reliability and efficiency of operation thereof.;1 cl, 1 tbl, 8 dwg