Kosyuk E. Reagent treatment of water in circulating cooling systems

The scientific approaches to the solution of the important scientific and practical problem of increasing the operation reliability of circulation cooling systems at industrial plants by the inhibitor composition treatment of circulating water for reducing the rate of corrosion and averting the processes of scale formation on the surface of heat exchange equipment are formulated and justified. New inhibitor composition of multiple use with improved efficiency for simultaneous prevention of corrosion processes and scale formation on the surface of heat exchange equipment in open circulation cooling systems has been developed based on phosphon-containing complexons and low-molecular polymers and investigated. Based on the theoretical and laboratory studiescarried out in the thesis, the influence of strengthening of alkaline-earth metals salts in circulating water on the efficiency of inhibition composition activity has been revealed, that provides the opportunity to run circulation-cooling systems with the increased rate of evaporation. Based on the obtained statistic data, the mathematical model of process regression of electrolytic corrosion inhibition with the help of developed inhibitor composition, which is different from existing ones because it factors into pH, chlorides, general hardness, alkalinity, temperature and concentration of the reactant. Calculation and investigation data have been correlated. The dissertation results have been implemented into the cooling system of evaporative condensers VCX S 700 private JSC “DANONE-KREMEZ” from Kremenchuk.