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Modern methods of water treatment. Scale formation in thermal engineering equipment
https://doi.org/10.22349/1994-6716-2025-121-1-119-134
Abstract
The paper considers the existing methods of desalination of water with a high content of minerals, as well as the problem of scale formation and corrosion in thermal engineering equipment. Such water is often used for technical water supply of heating equipment, where the salts contained in it lead to a decrease in efficiency, as well as equipment failure. In addition, the problem of desalination of seawater is relevant for countries located in arid regions of the globe, limited by low rainfall and countries with a shortage of freshwater sources.
An express method of scale formation is presented, which allows evaluating the effect of modifying additives on the anti-scale properties of a protective polymer coating. The process of sediment formation in real devices with real media is quite long, and it may take a considerable time to obtain a result suitable for evaluation, which is unacceptable, since the selection and optimization of the composition will take years. In the proposed installation, the formation of scale deposits on the substrate occurs in 2 hours. The method consists in exposing a brass plate with a protective polymer coating in an experimental laboratory installation that provides conditions similar to the operating condition of heat exchange equipment with unchanged composition of the mineral solution and experimental conditions, and subsequent analysis of the coating and carbonate deposits. The analysis consists in determining the thickness of the formed scale layer on the modified and unmodified coating, determining the elemental composition of these deposits, as well as evaluating the uniformity of their distribution.
About the Authors
S. A. Tyurina
MIREA – Russian Technological University
Russian Federation
Russian Federation
Cand Sc. (Eng),
78 Vernadsky Ave, 119454 Moscow
V. L. Demin
MIREA – Russian Technological University;
Frumkin Institute of Physical Chemistry and Electrochemistry RAS
Russian Federation
Russian Federation
Cand Sc. (Eng), 78 Vernadsky Ave, 119454 Moscow;
31/4 Leninsky Ave, 119071 Moscow
V. A. Golovin
Frumkin Institute of Physical Chemistry and Electrochemistry RAS
Russian Federation
Russian Federation
Dr Sc. (Eng),
31/4 Leninsky Ave, 119071 Moscow
V. A. Shchelkov
Frumkin Institute of Physical Chemistry and Electrochemistry RAS
Russian Federation
Russian Federation
Cand Sc. (Eng),
31/4 Leninsky Ave, 119071 Moscow
N. A. Rashutin
MIREA – Russian Technological University
Russian Federation
Russian Federation
78 Vernadsky Ave, 119454 Moscow
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For citations:
Tyurina S.A., Demin V.L., Golovin V.A., Shchelkov V.A., Rashutin N.A. Modern methods of water treatment. Scale formation in thermal engineering equipment. Voprosy Materialovedeniya. 2025;(1(121)):119-134. (In Russ.) https://doi.org/10.22349/1994-6716-2025-121-1-119-134
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