首页|Corrosion Inhibitors for Small-Scale Heat-Supply Systems
Corrosion Inhibitors for Small-Scale Heat-Supply Systems
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Stationary oxygen concentration in a closed heat-supply system, which is filled and replenished with non-deaerated water at a temperature of 20 deg C, has been calculated. The calculation takes into account the system surface-to- volume ratio and the relative added makeup water volume fraction. In the case of a system using corrosion inhibitors, the stable oxygen concentration at a preset makeup rate falls within 400-800 mu g/dm~3. Experiments performed in a special setup for polarization measurements showed that, at an oxygen concentration of 600 mu g/dm~3, a decrease in the general internal corrosion rate can be achieved using IOMS-1 and PAF-13A inhibitors at a concentration of 4-5 mg/dm~3, or a zinc complex of oxyethylidenediphosphonic acid at 25 mg/dm~3.
Yu. V. Balaban-Irmenin、N.G. Fokina
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All-Russia Thermal Engineering Institute, Moscow, 109280 Russia
NSTL
