Abstract

N. А. Vysotskaya, B. N. Kabylbekova, K. A. Bekzhigitova, R. Spabekova and K. T. Кurbanbekov

DOI : http://dx.doi.org/10.13005/ojc/330643

The composition of corrosion-scale deposits, consisting of alkali metal carbonates, silicates and sulfates, formed on the metal surface in the form of dense and loose deposits, depending on the composition of the heat carrier (water) formed on the inner surface of pipelines in heat supply systems using a scanning electron microscope Brand JSM-6490LV with systems of energy dispersive microanalysis INSA Energu and structural analysis HKL-Basic with a useful increase of 300,000 in combination with a high-performance liquid chromatograph Varian Pro Star was investigated. The solutions of acids: hydrochloric, oxalic, citric and sulphamic acids, often used as washing reagents in heat supply systems, are shown, the rate of corrosion and loss from corrosion under wash conditions were investigated. The process of selecting the optimal module of sodium silicate used as an inhibitor in the washing solution was determined, it is studied and experimentally installed dependence of the corrosion rate index on the inhibitor module and the time of aging of the sample in the inhibitor solution was studied and experimentally established in order to create an effective protective film with a high aftereffect. An instrument-technological scheme for chemical washing of the internal surface of pipelines is given to remove scaling deposits.

corrosion-scum deposits; inhibitor; chemical purification

[ View HTML Full Text]