REMOVAL OF SCALES FROM THE SURFACE OF PIPES WITH CHEMICAL SOLUTIONS IN HEAT SUPPLY SYSTEMS
Vysotskaya N.A. Kabylbekova B.N. Spabekova R. Anarbaev A.A. Kurbanbekov K.T. Lukin E.G.
2023National Academy of Sciences of the Republic of Kazakhstan
News of the National Academy of Sciences of the Republic of Kazakhstan, Series of Geology and Technical Sciences
2023#5Issue 461100 - 108 pp.
Energy saving is an important direction of economic and social development of any State. Modernization of energy saving programs requires new innovative approaches for their implementation. Ensuring the free passage of the coolant through the system is one of the important directions in the uninterrupted operation of heat supply systems. The heat supply system during operation is subject to the formation of corrosion-scale deposits (CSD) on the inner surface of the pipelines, which hinders the passage of the coolant to the consumer. This process requires an increase in energy consumption for additional heating of the coolant. Removal of CSD from the surface of pipes is one of the most important tasks. Advanced achievements in the removal of CSD for reducing energy costs in heating systems, allow us to correctly approach the solution of the problem. Corrosive deposits vary in composition, but almost 80% consist of carbonates and silicates, to a lesser extent of sulphates and phosphates of alkali metals. A change of the hydrodynamic and thermal regime in heat supply systems causes sludge to be washed off the pipe walls, which is captured by the coolant and actively participates in the formation of corrosion-scale deposits. For completely eliminate corrosion ― scale deposits from the inner surface of pipelines, chemical solutions are needed, the composition of which has been worked on by scientists for many years. The primary task of our research was to establish the composition of corrosion – scale deposits for the correct selection of the composition of effective chemical washing solutions that dissolve scale deposits from the pipe surface well. Analysis of the scale deposits composition, established by a scanning electron microscope with systems of energy dispersive microanalysis INSAEnergu and structural analysis HKL ― Basic with a useful magnification of 300,000, allows us to determine the content of the main components and impurities in the composition of scale deposits, and correctly approach the selection of flushing solutions.
chemical washing solutions , energy dispersive analysis , scale deposits
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Chemistry and Pharmaceutical Engineering of the South-Kazakhstan State University named after M. Auezov, Kazakhstan
Moscow, Russian Federation
Chemistry and Pharmaceutical Engineering of the South-Kazakhstan State University named after M. Auezov
Moscow
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