PROTECTION AGAINST CORROSION DAMAGE OF ROTATING EQUIPMENT WATER COOLING SYSTEM

Abstract

As a result of the high aggressiveness of circulating water, there is a problem of corrosive destruction of heat exchangers and reduction of their working capacity at industrial enterprises of both civil and military purposes. The article deals with the issue of increasing anti-corrosion protection of steel surfaces (St3 and Steel 20) by introducing an effective environmentally safe corrosion inhibitor MG-CHDTU into the water composition of recirculating cooling systems. This article, carries out the comprehensive studies of the influence of the inhibitor of different concentrations, the temperature of the heat carrier and the presence of fluid movement on the course of corrosion processes in the system. The effective inhibitor concentration is 2 g/l, at which the rate of steel corrosion does not exceed 0.02 mm per year at a temperature of 293 K. When the temperature increases from 293 to 333 K, the protective effect remains high Z = 72.5-99.2%, depending on the aggressiveness of the environment and the movement of the liquid. It was determined that the MG-CHDTU inhibitor has high bactericidal properties – it inhibits the growth of algae and microorganisms, including Escherichia coli and Pseudomonas aeruginosa, in circulating water.