THE IMPACT OF COMPLEXING AGENTS THERMAL DEGRADATION PRODUCTS ON THE CORRECTIVE TREATMENT OF THERMAL POWER PLANT HEAT TRANSFER AGENT
There are given the results of the influence of the chelators and their sodium salts thermal decomposition in aqueous medium equilibrium processes of thermal power plants. As a result of the thermodynamic calculations ionic compositions of aqueous solutions containing 1-Hydroxyethane-1,1-diphosphonic acid (HEDP) and phosphonoacetic acid (PAA) were defined. The dependence of the pH of PAA and its sodium salts aqueous solutions from reactant concentrations and pH ranges of thermodynamic stability iminodiacetic acid (IDA) with metal cations including in the constructural materials were found. It is necessary to take into account the effect of thermal degradation products in aqueous systems at the correctional treatment of thermal power plant heat transfer agent.